Merge git://git.infradead.org/mtd-2.6

* git://git.infradead.org/mtd-2.6: (67 commits)
  [MTD] [MAPS] Fix printk format warning in nettel.c
  [MTD] [NAND] add cmdline parsing (mtdparts=) support to cafe_nand
  [MTD] CFI: remove major/minor version check for command set 0x0002
  [MTD] [NAND] ndfc driver
  [MTD] [TESTS] Fix some size_t printk format warnings
  [MTD] LPDDR Makefile and KConfig
  [MTD] LPDDR extended physmap driver to support LPDDR flash
  [MTD] LPDDR added new pfow_base parameter
  [MTD] LPDDR Command set driver
  [MTD] LPDDR PFOW definition
  [MTD] LPDDR QINFO records definitions
  [MTD] LPDDR qinfo probing.
  [MTD] [NAND] pxa3xx: convert from ns to clock ticks more accurately
  [MTD] [NAND] pxa3xx: fix non-page-aligned reads
  [MTD] [NAND] fix nandsim sched.h references
  [MTD] [NAND] alauda: use USB API functions rather than constants
  [MTD] struct device - replace bus_id with dev_name(), dev_set_name()
  [MTD] fix m25p80 64-bit divisions
  [MTD] fix dataflash 64-bit divisions
  [MTD] [NAND] Set the fsl elbc ECCM according the settings in bootloader.
  ...

Fixed up trivial debug conflicts in drivers/mtd/devices/{m25p80.c,mtd_dataflash.c}

89 files changed, 6145 insertions, 682 deletions

diff --git a/Documentation/powerpc/dts-bindings/4xx/ndfc.txt b/Documentation/powerpc/dts-bindings/4xx/ndfc.txt
new file mode 100644
index 00000000000..869f0b5f16e
--- /dev/null
+++ b/Documentation/powerpc/dts-bindings/4xx/ndfc.txt
@@ -0,0 +1,39 @@
+AMCC NDFC (NanD Flash Controller)
+
+Required properties:
+- compatible : "ibm,ndfc".
+- reg : should specify chip select and size used for the chip (0x2000).
+
+Optional properties:
+- ccr : NDFC config and control register value (default 0).
+- bank-settings : NDFC bank configuration register value (default 0).
+
+Notes:
+- partition(s) - follows the OF MTD standard for partitions
+
+Example:
+
+ndfc@1,0 {
+        compatible = "ibm,ndfc";
+        reg = <0x00000001 0x00000000 0x00002000>;
+        ccr = <0x00001000>;
+        bank-settings = <0x80002222>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        nand {
+                #address-cells = <1>;
+                #size-cells = <1>;
+
+                partition@0 {
+                        label = "kernel";
+                        reg = <0x00000000 0x00200000>;
+                };
+                partition@200000 {
+                        label = "root";
+                        reg = <0x00200000 0x03E00000>;
+                };
+        };
+};
+
+
diff --git a/arch/arm/mach-pxa/corgi.c b/arch/arm/mach-pxa/corgi.c
index c5e28a46b29..a8d91b6c136 100644
--- a/arch/arm/mach-pxa/corgi.c
+++ b/arch/arm/mach-pxa/corgi.c
@@ -27,6 +27,7 @@
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
 #include <linux/spi/corgi_lcd.h>
+#include <linux/mtd/sharpsl.h>
 #include <video/w100fb.h>
 
 #include <asm/setup.h>
@@ -542,6 +543,55 @@ err_free_1:
 static inline void corgi_init_spi(void) {}
 #endif
 
+static struct mtd_partition sharpsl_nand_partitions[] = {
+        {
+                .name = "System Area",
+                .offset = 0,
+                .size = 7 * 1024 * 1024,
+        },
+        {
+                .name = "Root Filesystem",
+                .offset = 7 * 1024 * 1024,
+                .size = 25 * 1024 * 1024,
+        },
+        {
+                .name = "Home Filesystem",
+                .offset = MTDPART_OFS_APPEND,
+                .size = MTDPART_SIZ_FULL,
+        },
+};
+
+static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
+
+static struct nand_bbt_descr sharpsl_bbt = {
+        .options = 0,
+        .offs = 4,
+        .len = 2,
+        .pattern = scan_ff_pattern
+};
+
+static struct sharpsl_nand_platform_data sharpsl_nand_platform_data = {
+        .badblock_pattern       = &sharpsl_bbt,
+        .partitions             = sharpsl_nand_partitions,
+        .nr_partitions          = ARRAY_SIZE(sharpsl_nand_partitions),
+};
+
+static struct resource sharpsl_nand_resources[] = {
+        {
+                .start  = 0x0C000000,
+                .end    = 0x0C000FFF,
+                .flags  = IORESOURCE_MEM,
+        },
+};
+
+static struct platform_device sharpsl_nand_device = {
+        .name           = "sharpsl-nand",
+        .id             = -1,
+        .resource       = sharpsl_nand_resources,
+        .num_resources  = ARRAY_SIZE(sharpsl_nand_resources),
+        .dev.platform_data      = &sharpsl_nand_platform_data,
+};
+
 static struct mtd_partition sharpsl_rom_parts[] = {
         {
                 .name   ="Boot PROM Filesystem",
@@ -577,6 +627,7 @@ static struct platform_device *devices[] __initdata = {
         &corgifb_device,
         &corgikbd_device,
         &corgiled_device,
+        &sharpsl_nand_device,
         &sharpsl_rom_device,
 };
 
@@ -617,6 +668,9 @@ static void __init corgi_init(void)
 
         platform_scoop_config = &corgi_pcmcia_config;
 
+        if (machine_is_husky())
+                sharpsl_nand_partitions[1].size = 53 * 1024 * 1024;
+
         platform_add_devices(devices, ARRAY_SIZE(devices));
 }
 
diff --git a/arch/arm/mach-pxa/poodle.c b/arch/arm/mach-pxa/poodle.c
index ae88855bf97..f9093beba75 100644
--- a/arch/arm/mach-pxa/poodle.c
+++ b/arch/arm/mach-pxa/poodle.c
@@ -24,6 +24,7 @@
 #include <linux/gpio.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
+#include <linux/mtd/sharpsl.h>
 
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
@@ -414,6 +415,55 @@ static struct pxafb_mach_info poodle_fb_info = {
         .lcd_conn       = LCD_COLOR_TFT_16BPP,
 };
 
+static struct mtd_partition sharpsl_nand_partitions[] = {
+        {
+                .name = "System Area",
+                .offset = 0,
+                .size = 7 * 1024 * 1024,
+        },
+        {
+                .name = "Root Filesystem",
+                .offset = 7 * 1024 * 1024,
+                .size = 22 * 1024 * 1024,
+        },
+        {
+                .name = "Home Filesystem",
+                .offset = MTDPART_OFS_APPEND,
+                .size = MTDPART_SIZ_FULL,
+        },
+};
+
+static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
+
+static struct nand_bbt_descr sharpsl_bbt = {
+        .options = 0,
+        .offs = 4,
+        .len = 2,
+        .pattern = scan_ff_pattern
+};
+
+static struct sharpsl_nand_platform_data sharpsl_nand_platform_data = {
+        .badblock_pattern       = &sharpsl_bbt,
+        .partitions             = sharpsl_nand_partitions,
+        .nr_partitions          = ARRAY_SIZE(sharpsl_nand_partitions),
+};
+
+static struct resource sharpsl_nand_resources[] = {
+        {
+                .start  = 0x0C000000,
+                .end    = 0x0C000FFF,
+                .flags  = IORESOURCE_MEM,
+        },
+};
+
+static struct platform_device sharpsl_nand_device = {
+        .name           = "sharpsl-nand",
+        .id             = -1,
+        .resource       = sharpsl_nand_resources,
+        .num_resources  = ARRAY_SIZE(sharpsl_nand_resources),
+        .dev.platform_data      = &sharpsl_nand_platform_data,
+};
+
 static struct mtd_partition sharpsl_rom_parts[] = {
         {
                 .name   ="Boot PROM Filesystem",
@@ -447,6 +497,7 @@ static struct platform_device sharpsl_rom_device = {
 static struct platform_device *devices[] __initdata = {
         &poodle_locomo_device,
         &poodle_scoop_device,
+        &sharpsl_nand_device,
         &sharpsl_rom_device,
 };
 
diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c
index 7299d87a1cb..6d447c9ce8a 100644
--- a/arch/arm/mach-pxa/spitz.c
+++ b/arch/arm/mach-pxa/spitz.c
@@ -31,6 +31,7 @@
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
 #include <linux/spi/corgi_lcd.h>
+#include <linux/mtd/sharpsl.h>
 
 #include <asm/setup.h>
 #include <asm/memory.h>
@@ -613,6 +614,54 @@ static struct pxafb_mach_info spitz_pxafb_info = {
         .lcd_conn       = LCD_COLOR_TFT_16BPP | LCD_ALTERNATE_MAPPING,
 };
 
+static struct mtd_partition sharpsl_nand_partitions[] = {
+        {
+                .name = "System Area",
+                .offset = 0,
+                .size = 7 * 1024 * 1024,
+        },
+        {
+                .name = "Root Filesystem",
+                .offset = 7 * 1024 * 1024,
+        },
+        {
+                .name = "Home Filesystem",
+                .offset = MTDPART_OFS_APPEND,
+                .size = MTDPART_SIZ_FULL,
+        },
+};
+
+static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
+
+static struct nand_bbt_descr sharpsl_bbt = {
+        .options = 0,
+        .offs = 4,
+        .len = 2,
+        .pattern = scan_ff_pattern
+};
+
+static struct sharpsl_nand_platform_data sharpsl_nand_platform_data = {
+        .badblock_pattern       = &sharpsl_bbt,
+        .partitions             = sharpsl_nand_partitions,
+        .nr_partitions          = ARRAY_SIZE(sharpsl_nand_partitions),
+};
+
+static struct resource sharpsl_nand_resources[] = {
+        {
+                .start  = 0x0C000000,
+                .end    = 0x0C000FFF,
+                .flags  = IORESOURCE_MEM,
+        },
+};
+
+static struct platform_device sharpsl_nand_device = {
+        .name           = "sharpsl-nand",
+        .id             = -1,
+        .resource       = sharpsl_nand_resources,
+        .num_resources  = ARRAY_SIZE(sharpsl_nand_resources),
+        .dev.platform_data      = &sharpsl_nand_platform_data,
+};
+
 
 static struct mtd_partition sharpsl_rom_parts[] = {
         {
@@ -648,6 +697,7 @@ static struct platform_device *devices[] __initdata = {
         &spitzscoop_device,
         &spitzkbd_device,
         &spitzled_device,
+        &sharpsl_nand_device,
         &sharpsl_rom_device,
 };
 
@@ -671,6 +721,14 @@ static void __init common_init(void)
         pm_power_off = spitz_poweroff;
         arm_pm_restart = spitz_restart;
 
+        if (machine_is_spitz()) {
+                sharpsl_nand_partitions[1].size = 5 * 1024 * 1024;
+        } else if (machine_is_akita()) {
+                sharpsl_nand_partitions[1].size = 58 * 1024 * 1024;
+        } else if (machine_is_borzoi()) {
+                sharpsl_nand_partitions[1].size = 32 * 1024 * 1024;
+        }
+
         PMCR = 0x00;
 
         /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
@@ -715,10 +773,29 @@ static struct i2c_board_info akita_i2c_board_info[] = {
         },
 };
 
+static struct nand_bbt_descr sharpsl_akita_bbt = {
+        .options = 0,
+        .offs = 4,
+        .len = 1,
+        .pattern = scan_ff_pattern
+};
+
+static struct nand_ecclayout akita_oobinfo = {
+        .eccbytes = 24,
+        .eccpos = {
+                   0x5, 0x1, 0x2, 0x3, 0x6, 0x7, 0x15, 0x11,
+                   0x12, 0x13, 0x16, 0x17, 0x25, 0x21, 0x22, 0x23,
+                   0x26, 0x27, 0x35, 0x31, 0x32, 0x33, 0x36, 0x37},
+        .oobfree = {{0x08, 0x09}}
+};
+
 static void __init akita_init(void)
 {
         spitz_ficp_platform_data.transceiver_mode = akita_irda_transceiver_mode;
 
+        sharpsl_nand_platform_data.badblock_pattern = &sharpsl_akita_bbt;
+        sharpsl_nand_platform_data.ecc_layout = &akita_oobinfo;
+
         /* We just pretend the second element of the array doesn't exist */
         spitz_pcmcia_config.num_devs = 1;
         platform_scoop_config = &spitz_pcmcia_config;
diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig
index a90d50c2c3e..7d04fb9ddca 100644
--- a/drivers/mtd/Kconfig
+++ b/drivers/mtd/Kconfig
@@ -45,6 +45,14 @@ config MTD_PARTITIONS
           devices. Partitioning on NFTL 'devices' is a different - that's the
           'normal' form of partitioning used on a block device.
 
+config MTD_TESTS
+        tristate "MTD tests support"
+        depends on m
+        help
+          This option includes various MTD tests into compilation. The tests
+          should normally be compiled as kernel modules. The modules perform
+          various checks and verifications when loaded.
+
 config MTD_REDBOOT_PARTS
         tristate "RedBoot partition table parsing"
         depends on MTD_PARTITIONS
@@ -316,6 +324,8 @@ source "drivers/mtd/nand/Kconfig"
 
 source "drivers/mtd/onenand/Kconfig"
 
+source "drivers/mtd/lpddr/Kconfig"
+
 source "drivers/mtd/ubi/Kconfig"
 
 endif # MTD
diff --git a/drivers/mtd/Makefile b/drivers/mtd/Makefile
index 4b77335715f..4521b1ecce4 100644
--- a/drivers/mtd/Makefile
+++ b/drivers/mtd/Makefile
@@ -29,6 +29,6 @@ obj-$(CONFIG_MTD_OOPS)		+= mtdoops.o
 nftl-objs               := nftlcore.o nftlmount.o
 inftl-objs              := inftlcore.o inftlmount.o
 
-obj-y           += chips/ maps/ devices/ nand/ onenand/
+obj-y           += chips/ lpddr/ maps/ devices/ nand/ onenand/ tests/
 
 obj-$(CONFIG_MTD_UBI)           += ubi/
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index c93a8be5d5f..f5ab6fa1057 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -58,8 +58,8 @@ static int cfi_intelext_write_buffers(struct mtd_info *, loff_t, size_t, size_t
 static int cfi_intelext_writev(struct mtd_info *, const struct kvec *, unsigned long, loff_t, size_t *);
 static int cfi_intelext_erase_varsize(struct mtd_info *, struct erase_info *);
 static void cfi_intelext_sync (struct mtd_info *);
-static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, size_t len);
-static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, size_t len);
+static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
 #ifdef CONFIG_MTD_OTP
 static int cfi_intelext_read_fact_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
 static int cfi_intelext_read_user_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
@@ -558,8 +558,8 @@ static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd)
         }
 
         for (i=0; i<mtd->numeraseregions;i++){
-                printk(KERN_DEBUG "erase region %d: offset=0x%x,size=0x%x,blocks=%d\n",
-                       i,mtd->eraseregions[i].offset,
+                printk(KERN_DEBUG "erase region %d: offset=0x%llx,size=0x%x,blocks=%d\n",
+                       i,(unsigned long long)mtd->eraseregions[i].offset,
                        mtd->eraseregions[i].erasesize,
                        mtd->eraseregions[i].numblocks);
         }
@@ -2058,7 +2058,7 @@ out:	put_chip(map, chip, adr);
         return ret;
 }
 
-static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         int ret;
 
@@ -2082,7 +2082,7 @@ static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
         return ret;
 }
 
-static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         int ret;
 
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index d74ec46aa03..94bb61e1904 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -71,8 +71,8 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
 static void put_chip(struct map_info *map, struct flchip *chip, unsigned long adr);
 #include "fwh_lock.h"
 
-static int cfi_atmel_lock(struct mtd_info *mtd, loff_t ofs, size_t len);
-static int cfi_atmel_unlock(struct mtd_info *mtd, loff_t ofs, size_t len);
+static int cfi_atmel_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+static int cfi_atmel_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
 
 static struct mtd_chip_driver cfi_amdstd_chipdrv = {
         .probe          = NULL, /* Not usable directly */
@@ -322,6 +322,14 @@ static struct cfi_fixup fixup_table[] = {
 };
 
 
+static void cfi_fixup_major_minor(struct cfi_private *cfi,
+                                  struct cfi_pri_amdstd *extp)
+{
+        if (cfi->mfr == CFI_MFR_SAMSUNG && cfi->id == 0x257e &&
+            extp->MajorVersion == '0')
+                extp->MajorVersion = '1';
+}
+
 struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)
 {
         struct cfi_private *cfi = map->fldrv_priv;
@@ -363,6 +371,8 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)
                         return NULL;
                 }
 
+                cfi_fixup_major_minor(cfi, extp);
+
                 if (extp->MajorVersion != '1' ||
                     (extp->MinorVersion < '0' || extp->MinorVersion > '4')) {
                         printk(KERN_ERR "  Unknown Amd/Fujitsu Extended Query "
@@ -1774,12 +1784,12 @@ out_unlock:
         return ret;
 }
 
-static int cfi_atmel_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int cfi_atmel_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         return cfi_varsize_frob(mtd, do_atmel_lock, ofs, len, NULL);
 }
 
-static int cfi_atmel_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int cfi_atmel_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         return cfi_varsize_frob(mtd, do_atmel_unlock, ofs, len, NULL);
 }
diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c
index d4714dd9f7a..6c740f346f9 100644
--- a/drivers/mtd/chips/cfi_cmdset_0020.c
+++ b/drivers/mtd/chips/cfi_cmdset_0020.c
@@ -42,8 +42,8 @@ static int cfi_staa_writev(struct mtd_info *mtd, const struct kvec *vecs,
                 unsigned long count, loff_t to, size_t *retlen);
 static int cfi_staa_erase_varsize(struct mtd_info *, struct erase_info *);
 static void cfi_staa_sync (struct mtd_info *);
-static int cfi_staa_lock(struct mtd_info *mtd, loff_t ofs, size_t len);
-static int cfi_staa_unlock(struct mtd_info *mtd, loff_t ofs, size_t len);
+static int cfi_staa_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+static int cfi_staa_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
 static int cfi_staa_suspend (struct mtd_info *);
 static void cfi_staa_resume (struct mtd_info *);
 
@@ -221,8 +221,8 @@ static struct mtd_info *cfi_staa_setup(struct map_info *map)
                 }
 
                 for (i=0; i<mtd->numeraseregions;i++){
-                        printk(KERN_DEBUG "%d: offset=0x%x,size=0x%x,blocks=%d\n",
-                               i,mtd->eraseregions[i].offset,
+                        printk(KERN_DEBUG "%d: offset=0x%llx,size=0x%x,blocks=%d\n",
+                               i, (unsigned long long)mtd->eraseregions[i].offset,
                                mtd->eraseregions[i].erasesize,
                                mtd->eraseregions[i].numblocks);
                 }
@@ -964,7 +964,7 @@ static int cfi_staa_erase_varsize(struct mtd_info *mtd,
                 adr += regions[i].erasesize;
                 len -= regions[i].erasesize;
 
-                if (adr % (1<< cfi->chipshift) == ((regions[i].offset + (regions[i].erasesize * regions[i].numblocks)) %( 1<< cfi->chipshift)))
+                if (adr % (1<< cfi->chipshift) == (((unsigned long)regions[i].offset + (regions[i].erasesize * regions[i].numblocks)) %( 1<< cfi->chipshift)))
                         i++;
 
                 if (adr >> cfi->chipshift) {
@@ -1135,7 +1135,7 @@ retry:
         spin_unlock_bh(chip->mutex);
         return 0;
 }
-static int cfi_staa_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int cfi_staa_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct map_info *map = mtd->priv;
         struct cfi_private *cfi = map->fldrv_priv;
@@ -1284,7 +1284,7 @@ retry:
         spin_unlock_bh(chip->mutex);
         return 0;
 }
-static int cfi_staa_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int cfi_staa_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct map_info *map = mtd->priv;
         struct cfi_private *cfi = map->fldrv_priv;
diff --git a/drivers/mtd/chips/fwh_lock.h b/drivers/mtd/chips/fwh_lock.h
index ab44f2b996f..57e0e4e921f 100644
--- a/drivers/mtd/chips/fwh_lock.h
+++ b/drivers/mtd/chips/fwh_lock.h
@@ -77,7 +77,7 @@ static int fwh_xxlock_oneblock(struct map_info *map, struct flchip *chip,
 }
 
 
-static int fwh_lock_varsize(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int fwh_lock_varsize(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         int ret;
 
@@ -88,7 +88,7 @@ static int fwh_lock_varsize(struct mtd_info *mtd, loff_t ofs, size_t len)
 }
 
 
-static int fwh_unlock_varsize(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int fwh_unlock_varsize(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         int ret;
 
diff --git a/drivers/mtd/devices/lart.c b/drivers/mtd/devices/lart.c
index f4bda4cee49..578de1c67bf 100644
--- a/drivers/mtd/devices/lart.c
+++ b/drivers/mtd/devices/lart.c
@@ -619,7 +619,7 @@ static struct mtd_partition lart_partitions[] = {
 };
 #endif
 
-int __init lart_flash_init (void)
+static int __init lart_flash_init (void)
 {
    int result;
    memset (&mtd,0,sizeof (mtd));
@@ -690,7 +690,7 @@ int __init lart_flash_init (void)
    return (result);
 }
 
-void __exit lart_flash_exit (void)
+static void __exit lart_flash_exit (void)
 {
 #ifndef HAVE_PARTITIONS
    del_mtd_device (&mtd);
@@ -705,5 +705,3 @@ module_exit (lart_flash_exit);
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Abraham vd Merwe <abraham@2d3d.co.za>");
 MODULE_DESCRIPTION("MTD driver for Intel 28F160F3 on LART board");
-
-
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 5733f064384..7c3fc766dcf 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -20,6 +20,7 @@
 #include <linux/device.h>
 #include <linux/interrupt.h>
 #include <linux/mutex.h>
+#include <linux/math64.h>
 
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
@@ -169,9 +170,9 @@ static int wait_till_ready(struct m25p *flash)
  */
 static int erase_chip(struct m25p *flash)
 {
-        DEBUG(MTD_DEBUG_LEVEL3, "%s: %s %dKiB\n",
-                        dev_name(&flash->spi->dev), __func__,
-                        flash->mtd.size / 1024);
+        DEBUG(MTD_DEBUG_LEVEL3, "%s: %s %lldKiB\n",
+              dev_name(&flash->spi->dev), __func__,
+              (long long)(flash->mtd.size >> 10));
 
         /* Wait until finished previous write command. */
         if (wait_till_ready(flash))
@@ -232,18 +233,18 @@ static int m25p80_erase(struct mtd_info *mtd, struct erase_info *instr)
 {
         struct m25p *flash = mtd_to_m25p(mtd);
         u32 addr,len;
+        uint32_t rem;
 
-        DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %d\n",
-                        dev_name(&flash->spi->dev), __func__, "at",
-                        (u32)instr->addr, instr->len);
+        DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%llx, len %lld\n",
+              dev_name(&flash->spi->dev), __func__, "at",
+              (long long)instr->addr, (long long)instr->len);
 
         /* sanity checks */
         if (instr->addr + instr->len > flash->mtd.size)
                 return -EINVAL;
-        if ((instr->addr % mtd->erasesize) != 0
-                        || (instr->len % mtd->erasesize) != 0) {
+        div_u64_rem(instr->len, mtd->erasesize, &rem);
+        if (rem)
                 return -EINVAL;
-        }
 
         addr = instr->addr;
         len = instr->len;
@@ -677,24 +678,24 @@ static int __devinit m25p_probe(struct spi_device *spi)
                 flash->mtd.erasesize = info->sector_size;
         }
 
-        dev_info(&spi->dev, "%s (%d Kbytes)\n", info->name,
-                        flash->mtd.size / 1024);
+        dev_info(&spi->dev, "%s (%lld Kbytes)\n", info->name,
+                        (long long)flash->mtd.size >> 10);
 
         DEBUG(MTD_DEBUG_LEVEL2,
-                "mtd .name = %s, .size = 0x%.8x (%uMiB) "
+                "mtd .name = %s, .size = 0x%llx (%lldMiB) "
                         ".erasesize = 0x%.8x (%uKiB) .numeraseregions = %d\n",
                 flash->mtd.name,
-                flash->mtd.size, flash->mtd.size / (1024*1024),
+                (long long)flash->mtd.size, (long long)(flash->mtd.size >> 20),
                 flash->mtd.erasesize, flash->mtd.erasesize / 1024,
                 flash->mtd.numeraseregions);
 
         if (flash->mtd.numeraseregions)
                 for (i = 0; i < flash->mtd.numeraseregions; i++)
                         DEBUG(MTD_DEBUG_LEVEL2,
-                                "mtd.eraseregions[%d] = { .offset = 0x%.8x, "
+                                "mtd.eraseregions[%d] = { .offset = 0x%llx, "
                                 ".erasesize = 0x%.8x (%uKiB), "
                                 ".numblocks = %d }\n",
-                                i, flash->mtd.eraseregions[i].offset,
+                                i, (long long)flash->mtd.eraseregions[i].offset,
                                 flash->mtd.eraseregions[i].erasesize,
                                 flash->mtd.eraseregions[i].erasesize / 1024,
                                 flash->mtd.eraseregions[i].numblocks);
@@ -722,12 +723,12 @@ static int __devinit m25p_probe(struct spi_device *spi)
                 if (nr_parts > 0) {
                         for (i = 0; i < nr_parts; i++) {
                                 DEBUG(MTD_DEBUG_LEVEL2, "partitions[%d] = "
-                                        "{.name = %s, .offset = 0x%.8x, "
-                                                ".size = 0x%.8x (%uKiB) }\n",
+                                        "{.name = %s, .offset = 0x%llx, "
+                                                ".size = 0x%llx (%lldKiB) }\n",
                                         i, parts[i].name,
-                                        parts[i].offset,
-                                        parts[i].size,
-                                        parts[i].size / 1024);
+                                        (long long)parts[i].offset,
+                                        (long long)parts[i].size,
+                                        (long long)(parts[i].size >> 10));
                         }
                         flash->partitioned = 1;
                         return add_mtd_partitions(&flash->mtd, parts, nr_parts);
diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c
index 65126cd668f..d44f741ae22 100644
--- a/drivers/mtd/devices/mtd_dataflash.c
+++ b/drivers/mtd/devices/mtd_dataflash.c
@@ -16,6 +16,7 @@
 #include <linux/device.h>
 #include <linux/mutex.h>
 #include <linux/err.h>
+#include <linux/math64.h>
 
 #include <linux/spi/spi.h>
 #include <linux/spi/flash.h>
@@ -152,15 +153,20 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr)
         struct spi_message      msg;
         unsigned                blocksize = priv->page_size << 3;
         uint8_t                 *command;
+        uint32_t                rem;
 
-        DEBUG(MTD_DEBUG_LEVEL2, "%s: erase addr=0x%x len 0x%x\n",
-                        dev_name(&spi->dev),
-                        instr->addr, instr->len);
+        DEBUG(MTD_DEBUG_LEVEL2, "%s: erase addr=0x%llx len 0x%llx\n",
+              dev_name(&spi->dev), (long long)instr->addr,
+              (long long)instr->len);
 
         /* Sanity checks */
-        if ((instr->addr + instr->len) > mtd->size
-                        || (instr->len % priv->page_size) != 0
-                        || (instr->addr % priv->page_size) != 0)
+        if (instr->addr + instr->len > mtd->size)
+                return -EINVAL;
+        div_u64_rem(instr->len, priv->page_size, &rem);
+        if (rem)
+                return -EINVAL;
+        div_u64_rem(instr->addr, priv->page_size, &rem);
+        if (rem)
                 return -EINVAL;
 
         spi_message_init(&msg);
@@ -178,7 +184,7 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr)
                 /* Calculate flash page address; use block erase (for speed) if
                  * we're at a block boundary and need to erase the whole block.
                  */
-                pageaddr = instr->addr / priv->page_size;
+                pageaddr = div_u64(instr->len, priv->page_size);
                 do_block = (pageaddr & 0x7) == 0 && instr->len >= blocksize;
                 pageaddr = pageaddr << priv->page_offset;
 
@@ -667,8 +673,8 @@ add_dataflash_otp(struct spi_device *spi, char *name,
         if (revision >= 'c')
                 otp_tag = otp_setup(device, revision);
 
-        dev_info(&spi->dev, "%s (%d KBytes) pagesize %d bytes%s\n",
-                        name, DIV_ROUND_UP(device->size, 1024),
+        dev_info(&spi->dev, "%s (%lld KBytes) pagesize %d bytes%s\n",
+                        name, (long long)((device->size + 1023) >> 10),
                         pagesize, otp_tag);
         dev_set_drvdata(&spi->dev, priv);
 
diff --git a/drivers/mtd/ftl.c b/drivers/mtd/ftl.c
index 9bf581c4f74..a790c062af1 100644
--- a/drivers/mtd/ftl.c
+++ b/drivers/mtd/ftl.c
@@ -109,25 +109,25 @@ module_param(shuffle_freq, int, 0);
 /* Each memory region corresponds to a minor device */
 typedef struct partition_t {
     struct mtd_blktrans_dev mbd;
-    u_int32_t           state;
-    u_int32_t           *VirtualBlockMap;
-    u_int32_t           *VirtualPageMap;
-    u_int32_t           FreeTotal;
+    uint32_t            state;
+    uint32_t            *VirtualBlockMap;
+    uint32_t            *VirtualPageMap;
+    uint32_t            FreeTotal;
     struct eun_info_t {
-        u_int32_t               Offset;
-        u_int32_t               EraseCount;
-        u_int32_t               Free;
-        u_int32_t               Deleted;
+        uint32_t                Offset;
+        uint32_t                EraseCount;
+        uint32_t                Free;
+        uint32_t                Deleted;
     } *EUNInfo;
     struct xfer_info_t {
-        u_int32_t               Offset;
-        u_int32_t               EraseCount;
-        u_int16_t               state;
+        uint32_t                Offset;
+        uint32_t                EraseCount;
+        uint16_t                state;
     } *XferInfo;
-    u_int16_t           bam_index;
-    u_int32_t           *bam_cache;
-    u_int16_t           DataUnits;
-    u_int32_t           BlocksPerUnit;
+    uint16_t            bam_index;
+    uint32_t            *bam_cache;
+    uint16_t            DataUnits;
+    uint32_t            BlocksPerUnit;
     erase_unit_header_t header;
 } partition_t;
 
@@ -199,8 +199,8 @@ static int scan_header(partition_t *part)
 static int build_maps(partition_t *part)
 {
     erase_unit_header_t header;
-    u_int16_t xvalid, xtrans, i;
-    u_int blocks, j;
+    uint16_t xvalid, xtrans, i;
+    unsigned blocks, j;
     int hdr_ok, ret = -1;
     ssize_t retval;
     loff_t offset;
@@ -269,14 +269,14 @@ static int build_maps(partition_t *part)
 
     /* Set up virtual page map */
     blocks = le32_to_cpu(header.FormattedSize) >> header.BlockSize;
-    part->VirtualBlockMap = vmalloc(blocks * sizeof(u_int32_t));
+    part->VirtualBlockMap = vmalloc(blocks * sizeof(uint32_t));
     if (!part->VirtualBlockMap)
             goto out_XferInfo;
 
-    memset(part->VirtualBlockMap, 0xff, blocks * sizeof(u_int32_t));
+    memset(part->VirtualBlockMap, 0xff, blocks * sizeof(uint32_t));
     part->BlocksPerUnit = (1 << header.EraseUnitSize) >> header.BlockSize;
 
-    part->bam_cache = kmalloc(part->BlocksPerUnit * sizeof(u_int32_t),
+    part->bam_cache = kmalloc(part->BlocksPerUnit * sizeof(uint32_t),
                               GFP_KERNEL);
     if (!part->bam_cache)
             goto out_VirtualBlockMap;
@@ -290,7 +290,7 @@ static int build_maps(partition_t *part)
         offset = part->EUNInfo[i].Offset + le32_to_cpu(header.BAMOffset);
 
         ret = part->mbd.mtd->read(part->mbd.mtd, offset,
-                              part->BlocksPerUnit * sizeof(u_int32_t), &retval,
+                              part->BlocksPerUnit * sizeof(uint32_t), &retval,
                               (unsigned char *)part->bam_cache);
 
         if (ret)
@@ -332,7 +332,7 @@ out:
 ======================================================================*/
 
 static int erase_xfer(partition_t *part,
-                      u_int16_t xfernum)
+                      uint16_t xfernum)
 {
     int ret;
     struct xfer_info_t *xfer;
@@ -408,7 +408,7 @@ static int prepare_xfer(partition_t *part, int i)
     erase_unit_header_t header;
     struct xfer_info_t *xfer;
     int nbam, ret;
-    u_int32_t ctl;
+    uint32_t ctl;
     ssize_t retlen;
     loff_t offset;
 
@@ -430,15 +430,15 @@ static int prepare_xfer(partition_t *part, int i)
     }
 
     /* Write the BAM stub */
-    nbam = (part->BlocksPerUnit * sizeof(u_int32_t) +
+    nbam = (part->BlocksPerUnit * sizeof(uint32_t) +
             le32_to_cpu(part->header.BAMOffset) + SECTOR_SIZE - 1) / SECTOR_SIZE;
 
     offset = xfer->Offset + le32_to_cpu(part->header.BAMOffset);
     ctl = cpu_to_le32(BLOCK_CONTROL);
 
-    for (i = 0; i < nbam; i++, offset += sizeof(u_int32_t)) {
+    for (i = 0; i < nbam; i++, offset += sizeof(uint32_t)) {
 
-        ret = part->mbd.mtd->write(part->mbd.mtd, offset, sizeof(u_int32_t),
+        ret = part->mbd.mtd->write(part->mbd.mtd, offset, sizeof(uint32_t),
                                &retlen, (u_char *)&ctl);
 
         if (ret)
@@ -461,18 +461,18 @@ static int prepare_xfer(partition_t *part, int i)
 
 ======================================================================*/
 
-static int copy_erase_unit(partition_t *part, u_int16_t srcunit,
-                           u_int16_t xferunit)
+static int copy_erase_unit(partition_t *part, uint16_t srcunit,
+                           uint16_t xferunit)
 {
     u_char buf[SECTOR_SIZE];
     struct eun_info_t *eun;
     struct xfer_info_t *xfer;
-    u_int32_t src, dest, free, i;
-    u_int16_t unit;
+    uint32_t src, dest, free, i;
+    uint16_t unit;
     int ret;
     ssize_t retlen;
     loff_t offset;
-    u_int16_t srcunitswap = cpu_to_le16(srcunit);
+    uint16_t srcunitswap = cpu_to_le16(srcunit);
 
     eun = &part->EUNInfo[srcunit];
     xfer = &part->XferInfo[xferunit];
@@ -486,7 +486,7 @@ static int copy_erase_unit(partition_t *part, u_int16_t srcunit,
         offset = eun->Offset + le32_to_cpu(part->header.BAMOffset);
 
         ret = part->mbd.mtd->read(part->mbd.mtd, offset,
-                              part->BlocksPerUnit * sizeof(u_int32_t),
+                              part->BlocksPerUnit * sizeof(uint32_t),
                               &retlen, (u_char *) (part->bam_cache));
 
         /* mark the cache bad, in case we get an error later */
@@ -503,7 +503,7 @@ static int copy_erase_unit(partition_t *part, u_int16_t srcunit,
     offset = xfer->Offset + 20; /* Bad! */
     unit = cpu_to_le16(0x7fff);
 
-    ret = part->mbd.mtd->write(part->mbd.mtd, offset, sizeof(u_int16_t),
+    ret = part->mbd.mtd->write(part->mbd.mtd, offset, sizeof(uint16_t),
                            &retlen, (u_char *) &unit);
 
     if (ret) {
@@ -560,7 +560,7 @@ static int copy_erase_unit(partition_t *part, u_int16_t srcunit,
 
 
     /* All clear? Then update the LogicalEUN again */
-    ret = part->mbd.mtd->write(part->mbd.mtd, xfer->Offset + 20, sizeof(u_int16_t),
+    ret = part->mbd.mtd->write(part->mbd.mtd, xfer->Offset + 20, sizeof(uint16_t),
                            &retlen, (u_char *)&srcunitswap);
 
     if (ret) {
@@ -605,8 +605,8 @@ static int copy_erase_unit(partition_t *part, u_int16_t srcunit,
 
 static int reclaim_block(partition_t *part)
 {
-    u_int16_t i, eun, xfer;
-    u_int32_t best;
+    uint16_t i, eun, xfer;
+    uint32_t best;
     int queued, ret;
 
     DEBUG(0, "ftl_cs: reclaiming space...\n");
@@ -723,10 +723,10 @@ static void dump_lists(partition_t *part)
 }
 #endif
 
-static u_int32_t find_free(partition_t *part)
+static uint32_t find_free(partition_t *part)
 {
-    u_int16_t stop, eun;
-    u_int32_t blk;
+    uint16_t stop, eun;
+    uint32_t blk;
     size_t retlen;
     int ret;
 
@@ -749,7 +749,7 @@ static u_int32_t find_free(partition_t *part)
 
         ret = part->mbd.mtd->read(part->mbd.mtd,
                        part->EUNInfo[eun].Offset + le32_to_cpu(part->header.BAMOffset),
-                       part->BlocksPerUnit * sizeof(u_int32_t),
+                       part->BlocksPerUnit * sizeof(uint32_t),
                        &retlen, (u_char *) (part->bam_cache));
 
         if (ret) {
@@ -786,7 +786,7 @@ static u_int32_t find_free(partition_t *part)
 static int ftl_read(partition_t *part, caddr_t buffer,
                     u_long sector, u_long nblocks)
 {
-    u_int32_t log_addr, bsize;
+    uint32_t log_addr, bsize;
     u_long i;
     int ret;
     size_t offset, retlen;
@@ -829,14 +829,14 @@ static int ftl_read(partition_t *part, caddr_t buffer,
 
 ======================================================================*/
 
-static int set_bam_entry(partition_t *part, u_int32_t log_addr,
-                         u_int32_t virt_addr)
+static int set_bam_entry(partition_t *part, uint32_t log_addr,
+                         uint32_t virt_addr)
 {
-    u_int32_t bsize, blk, le_virt_addr;
+    uint32_t bsize, blk, le_virt_addr;
 #ifdef PSYCHO_DEBUG
-    u_int32_t old_addr;
+    uint32_t old_addr;
 #endif
-    u_int16_t eun;
+    uint16_t eun;
     int ret;
     size_t retlen, offset;
 
@@ -845,11 +845,11 @@ static int set_bam_entry(partition_t *part, u_int32_t log_addr,
     bsize = 1 << part->header.EraseUnitSize;
     eun = log_addr / bsize;
     blk = (log_addr % bsize) / SECTOR_SIZE;
-    offset = (part->EUNInfo[eun].Offset + blk * sizeof(u_int32_t) +
+    offset = (part->EUNInfo[eun].Offset + blk * sizeof(uint32_t) +
                   le32_to_cpu(part->header.BAMOffset));
 
 #ifdef PSYCHO_DEBUG
-    ret = part->mbd.mtd->read(part->mbd.mtd, offset, sizeof(u_int32_t),
+    ret = part->mbd.mtd->read(part->mbd.mtd, offset, sizeof(uint32_t),
                         &retlen, (u_char *)&old_addr);
     if (ret) {
         printk(KERN_WARNING"ftl: Error reading old_addr in set_bam_entry: %d\n",ret);
@@ -886,7 +886,7 @@ static int set_bam_entry(partition_t *part, u_int32_t log_addr,
 #endif
         part->bam_cache[blk] = le_virt_addr;
     }
-    ret = part->mbd.mtd->write(part->mbd.mtd, offset, sizeof(u_int32_t),
+    ret = part->mbd.mtd->write(part->mbd.mtd, offset, sizeof(uint32_t),
                             &retlen, (u_char *)&le_virt_addr);
 
     if (ret) {
@@ -900,7 +900,7 @@ static int set_bam_entry(partition_t *part, u_int32_t log_addr,
 static int ftl_write(partition_t *part, caddr_t buffer,
                      u_long sector, u_long nblocks)
 {
-    u_int32_t bsize, log_addr, virt_addr, old_addr, blk;
+    uint32_t bsize, log_addr, virt_addr, old_addr, blk;
     u_long i;
     int ret;
     size_t retlen, offset;
diff --git a/drivers/mtd/inftlcore.c b/drivers/mtd/inftlcore.c
index 50ce13887f6..73f05227dc8 100644
--- a/drivers/mtd/inftlcore.c
+++ b/drivers/mtd/inftlcore.c
@@ -50,7 +50,7 @@ static void inftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
         struct INFTLrecord *inftl;
         unsigned long temp;
 
-        if (mtd->type != MTD_NANDFLASH)
+        if (mtd->type != MTD_NANDFLASH || mtd->size > UINT_MAX)
                 return;
         /* OK, this is moderately ugly.  But probably safe.  Alternatives? */
         if (memcmp(mtd->name, "DiskOnChip", 10))
diff --git a/drivers/mtd/inftlmount.c b/drivers/mtd/inftlmount.c
index 9113628ed1e..f751dd97c54 100644
--- a/drivers/mtd/inftlmount.c
+++ b/drivers/mtd/inftlmount.c
@@ -63,7 +63,7 @@ static int find_boot_record(struct INFTLrecord *inftl)
          * otherwise.
          */
         inftl->EraseSize = inftl->mbd.mtd->erasesize;
-        inftl->nb_blocks = inftl->mbd.mtd->size / inftl->EraseSize;
+        inftl->nb_blocks = (u32)inftl->mbd.mtd->size / inftl->EraseSize;
 
         inftl->MediaUnit = BLOCK_NIL;
 
@@ -187,7 +187,7 @@ static int find_boot_record(struct INFTLrecord *inftl)
                                 mh->BlockMultiplierBits);
                         inftl->EraseSize = inftl->mbd.mtd->erasesize <<
                                 mh->BlockMultiplierBits;
-                        inftl->nb_blocks = inftl->mbd.mtd->size / inftl->EraseSize;
+                        inftl->nb_blocks = (u32)inftl->mbd.mtd->size / inftl->EraseSize;
                         block >>= mh->BlockMultiplierBits;
                 }
 
diff --git a/drivers/mtd/lpddr/Kconfig b/drivers/mtd/lpddr/Kconfig
new file mode 100644
index 00000000000..acd4ea9b227
--- /dev/null
+++ b/drivers/mtd/lpddr/Kconfig
@@ -0,0 +1,22 @@
+# drivers/mtd/chips/Kconfig
+
+menu "LPDDR flash memory drivers"
+        depends on MTD!=n
+
+config MTD_LPDDR
+        tristate "Support for LPDDR flash chips"
+        select MTD_QINFO_PROBE
+        help
+          This option enables support of LPDDR (Low power double data rate)
+          flash chips. Synonymous with Mobile-DDR. It is a new standard for
+          DDR memories, intended for battery-operated systems.
+
+config MTD_QINFO_PROBE
+        tristate "Detect flash chips by QINFO probe"
+        help
+            Device Information for LPDDR chips is offered through the Overlay
+            Window QINFO interface, permits software to be used for entire
+            families of devices. This serves similar purpose of CFI on legacy
+            Flash products
+endmenu
+
diff --git a/drivers/mtd/lpddr/Makefile b/drivers/mtd/lpddr/Makefile
new file mode 100644
index 00000000000..da48e46b581
--- /dev/null
+++ b/drivers/mtd/lpddr/Makefile
@@ -0,0 +1,6 @@
+#
+# linux/drivers/mtd/lpddr/Makefile
+#
+
+obj-$(CONFIG_MTD_QINFO_PROBE)   += qinfo_probe.o
+obj-$(CONFIG_MTD_LPDDR) += lpddr_cmds.o
diff --git a/drivers/mtd/lpddr/lpddr_cmds.c b/drivers/mtd/lpddr/lpddr_cmds.c
new file mode 100644
index 00000000000..e22ca49583e
--- /dev/null
+++ b/drivers/mtd/lpddr/lpddr_cmds.c
@@ -0,0 +1,796 @@
+/*
+ * LPDDR flash memory device operations. This module provides read, write,
+ * erase, lock/unlock support for LPDDR flash memories
+ * (C) 2008 Korolev Alexey <akorolev@infradead.org>
+ * (C) 2008 Vasiliy Leonenko <vasiliy.leonenko@gmail.com>
+ * Many thanks to Roman Borisov for intial enabling
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ * TODO:
+ * Implement VPP management
+ * Implement XIP support
+ * Implement OTP support
+ */
+#include <linux/mtd/pfow.h>
+#include <linux/mtd/qinfo.h>
+
+static int lpddr_read(struct mtd_info *mtd, loff_t adr, size_t len,
+                                        size_t *retlen, u_char *buf);
+static int lpddr_write_buffers(struct mtd_info *mtd, loff_t to,
+                                size_t len, size_t *retlen, const u_char *buf);
+static int lpddr_writev(struct mtd_info *mtd, const struct kvec *vecs,
+                                unsigned long count, loff_t to, size_t *retlen);
+static int lpddr_erase(struct mtd_info *mtd, struct erase_info *instr);
+static int lpddr_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+static int lpddr_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+static int lpddr_point(struct mtd_info *mtd, loff_t adr, size_t len,
+                        size_t *retlen, void **mtdbuf, resource_size_t *phys);
+static void lpddr_unpoint(struct mtd_info *mtd, loff_t adr, size_t len);
+static int get_chip(struct map_info *map, struct flchip *chip, int mode);
+static int chip_ready(struct map_info *map, struct flchip *chip, int mode);
+static void put_chip(struct map_info *map, struct flchip *chip);
+
+struct mtd_info *lpddr_cmdset(struct map_info *map)
+{
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        struct flchip_shared *shared;
+        struct flchip *chip;
+        struct mtd_info *mtd;
+        int numchips;
+        int i, j;
+
+        mtd = kzalloc(sizeof(*mtd), GFP_KERNEL);
+        if (!mtd) {
+                printk(KERN_ERR "Failed to allocate memory for MTD device\n");
+                return NULL;
+        }
+        mtd->priv = map;
+        mtd->type = MTD_NORFLASH;
+
+        /* Fill in the default mtd operations */
+        mtd->read = lpddr_read;
+        mtd->type = MTD_NORFLASH;
+        mtd->flags = MTD_CAP_NORFLASH;
+        mtd->flags &= ~MTD_BIT_WRITEABLE;
+        mtd->erase = lpddr_erase;
+        mtd->write = lpddr_write_buffers;
+        mtd->writev = lpddr_writev;
+        mtd->read_oob = NULL;
+        mtd->write_oob = NULL;
+        mtd->sync = NULL;
+        mtd->lock = lpddr_lock;
+        mtd->unlock = lpddr_unlock;
+        mtd->suspend = NULL;
+        mtd->resume = NULL;
+        if (map_is_linear(map)) {
+                mtd->point = lpddr_point;
+                mtd->unpoint = lpddr_unpoint;
+        }
+        mtd->block_isbad = NULL;
+        mtd->block_markbad = NULL;
+        mtd->size = 1 << lpddr->qinfo->DevSizeShift;
+        mtd->erasesize = 1 << lpddr->qinfo->UniformBlockSizeShift;
+        mtd->writesize = 1 << lpddr->qinfo->BufSizeShift;
+
+        shared = kmalloc(sizeof(struct flchip_shared) * lpddr->numchips,
+                                                GFP_KERNEL);
+        if (!shared) {
+                kfree(lpddr);
+                kfree(mtd);
+                return NULL;
+        }
+
+        chip = &lpddr->chips[0];
+        numchips = lpddr->numchips / lpddr->qinfo->HWPartsNum;
+        for (i = 0; i < numchips; i++) {
+                shared[i].writing = shared[i].erasing = NULL;
+                spin_lock_init(&shared[i].lock);
+                for (j = 0; j < lpddr->qinfo->HWPartsNum; j++) {
+                        *chip = lpddr->chips[i];
+                        chip->start += j << lpddr->chipshift;
+                        chip->oldstate = chip->state = FL_READY;
+                        chip->priv = &shared[i];
+                        /* those should be reset too since
+                           they create memory references. */
+                        init_waitqueue_head(&chip->wq);
+                        spin_lock_init(&chip->_spinlock);
+                        chip->mutex = &chip->_spinlock;
+                        chip++;
+                }
+        }
+
+        return mtd;
+}
+EXPORT_SYMBOL(lpddr_cmdset);
+
+static int wait_for_ready(struct map_info *map, struct flchip *chip,
+                unsigned int chip_op_time)
+{
+        unsigned int timeo, reset_timeo, sleep_time;
+        unsigned int dsr;
+        flstate_t chip_state = chip->state;
+        int ret = 0;
+
+        /* set our timeout to 8 times the expected delay */
+        timeo = chip_op_time * 8;
+        if (!timeo)
+                timeo = 500000;
+        reset_timeo = timeo;
+        sleep_time = chip_op_time / 2;
+
+        for (;;) {
+                dsr = CMDVAL(map_read(map, map->pfow_base + PFOW_DSR));
+                if (dsr & DSR_READY_STATUS)
+                        break;
+                if (!timeo) {
+                        printk(KERN_ERR "%s: Flash timeout error state %d \n",
+                                                        map->name, chip_state);
+                        ret = -ETIME;
+                        break;
+                }
+
+                /* OK Still waiting. Drop the lock, wait a while and retry. */
+                spin_unlock(chip->mutex);
+                if (sleep_time >= 1000000/HZ) {
+                        /*
+                         * Half of the normal delay still remaining
+                         * can be performed with a sleeping delay instead
+                         * of busy waiting.
+                         */
+                        msleep(sleep_time/1000);
+                        timeo -= sleep_time;
+                        sleep_time = 1000000/HZ;
+                } else {
+                        udelay(1);
+                        cond_resched();
+                        timeo--;
+                }
+                spin_lock(chip->mutex);
+
+                while (chip->state != chip_state) {
+                        /* Someone's suspended the operation: sleep */
+                        DECLARE_WAITQUEUE(wait, current);
+                        set_current_state(TASK_UNINTERRUPTIBLE);
+                        add_wait_queue(&chip->wq, &wait);
+                        spin_unlock(chip->mutex);
+                        schedule();
+                        remove_wait_queue(&chip->wq, &wait);
+                        spin_lock(chip->mutex);
+                }
+                if (chip->erase_suspended || chip->write_suspended)  {
+                        /* Suspend has occured while sleep: reset timeout */
+                        timeo = reset_timeo;
+                        chip->erase_suspended = chip->write_suspended = 0;
+                }
+        }
+        /* check status for errors */
+        if (dsr & DSR_ERR) {
+                /* Clear DSR*/
+                map_write(map, CMD(~(DSR_ERR)), map->pfow_base + PFOW_DSR);
+                printk(KERN_WARNING"%s: Bad status on wait: 0x%x \n",
+                                map->name, dsr);
+                print_drs_error(dsr);
+                ret = -EIO;
+        }
+        chip->state = FL_READY;
+        return ret;
+}
+
+static int get_chip(struct map_info *map, struct flchip *chip, int mode)
+{
+        int ret;
+        DECLARE_WAITQUEUE(wait, current);
+
+ retry:
+        if (chip->priv && (mode == FL_WRITING || mode == FL_ERASING)
+                && chip->state != FL_SYNCING) {
+                /*
+                 * OK. We have possibility for contension on the write/erase
+                 * operations which are global to the real chip and not per
+                 * partition.  So let's fight it over in the partition which
+                 * currently has authority on the operation.
+                 *
+                 * The rules are as follows:
+                 *
+                 * - any write operation must own shared->writing.
+                 *
+                 * - any erase operation must own _both_ shared->writing and
+                 *   shared->erasing.
+                 *
+                 * - contension arbitration is handled in the owner's context.
+                 *
+                 * The 'shared' struct can be read and/or written only when
+                 * its lock is taken.
+                 */
+                struct flchip_shared *shared = chip->priv;
+                struct flchip *contender;
+                spin_lock(&shared->lock);
+                contender = shared->writing;
+                if (contender && contender != chip) {
+                        /*
+                         * The engine to perform desired operation on this
+                         * partition is already in use by someone else.
+                         * Let's fight over it in the context of the chip
+                         * currently using it.  If it is possible to suspend,
+                         * that other partition will do just that, otherwise
+                         * it'll happily send us to sleep.  In any case, when
+                         * get_chip returns success we're clear to go ahead.
+                         */
+                        ret = spin_trylock(contender->mutex);
+                        spin_unlock(&shared->lock);
+                        if (!ret)
+                                goto retry;
+                        spin_unlock(chip->mutex);
+                        ret = chip_ready(map, contender, mode);
+                        spin_lock(chip->mutex);
+
+                        if (ret == -EAGAIN) {
+                                spin_unlock(contender->mutex);
+                                goto retry;
+                        }
+                        if (ret) {
+                                spin_unlock(contender->mutex);
+                                return ret;
+                        }
+                        spin_lock(&shared->lock);
+
+                        /* We should not own chip if it is already in FL_SYNCING
+                         * state. Put contender and retry. */
+                        if (chip->state == FL_SYNCING) {
+                                put_chip(map, contender);
+                                spin_unlock(contender->mutex);
+                                goto retry;
+                        }
+                        spin_unlock(contender->mutex);
+                }
+
+                /* Check if we have suspended erase on this chip.
+                   Must sleep in such a case. */
+                if (mode == FL_ERASING && shared->erasing
+                    && shared->erasing->oldstate == FL_ERASING) {
+                        spin_unlock(&shared->lock);
+                        set_current_state(TASK_UNINTERRUPTIBLE);
+                        add_wait_queue(&chip->wq, &wait);
+                        spin_unlock(chip->mutex);
+                        schedule();
+                        remove_wait_queue(&chip->wq, &wait);
+                        spin_lock(chip->mutex);
+                        goto retry;
+                }
+
+                /* We now own it */
+                shared->writing = chip;
+                if (mode == FL_ERASING)
+                        shared->erasing = chip;
+                spin_unlock(&shared->lock);
+        }
+
+        ret = chip_ready(map, chip, mode);
+        if (ret == -EAGAIN)
+                goto retry;
+
+        return ret;
+}
+
+static int chip_ready(struct map_info *map, struct flchip *chip, int mode)
+{
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int ret = 0;
+        DECLARE_WAITQUEUE(wait, current);
+
+        /* Prevent setting state FL_SYNCING for chip in suspended state. */
+        if (FL_SYNCING == mode && FL_READY != chip->oldstate)
+                goto sleep;
+
+        switch (chip->state) {
+        case FL_READY:
+        case FL_JEDEC_QUERY:
+                return 0;
+
+        case FL_ERASING:
+                if (!lpddr->qinfo->SuspEraseSupp ||
+                        !(mode == FL_READY || mode == FL_POINT))
+                        goto sleep;
+
+                map_write(map, CMD(LPDDR_SUSPEND),
+                        map->pfow_base + PFOW_PROGRAM_ERASE_SUSPEND);
+                chip->oldstate = FL_ERASING;
+                chip->state = FL_ERASE_SUSPENDING;
+                ret = wait_for_ready(map, chip, 0);
+                if (ret) {
+                        /* Oops. something got wrong. */
+                        /* Resume and pretend we weren't here.  */
+                        map_write(map, CMD(LPDDR_RESUME),
+                                map->pfow_base + PFOW_COMMAND_CODE);
+                        map_write(map, CMD(LPDDR_START_EXECUTION),
+                                map->pfow_base + PFOW_COMMAND_EXECUTE);
+                        chip->state = FL_ERASING;
+                        chip->oldstate = FL_READY;
+                        printk(KERN_ERR "%s: suspend operation failed."
+                                        "State may be wrong \n", map->name);
+                        return -EIO;
+                }
+                chip->erase_suspended = 1;
+                chip->state = FL_READY;
+                return 0;
+                /* Erase suspend */
+        case FL_POINT:
+                /* Only if there's no operation suspended... */
+                if (mode == FL_READY && chip->oldstate == FL_READY)
+                        return 0;
+
+        default:
+sleep:
+                set_current_state(TASK_UNINTERRUPTIBLE);
+                add_wait_queue(&chip->wq, &wait);
+                spin_unlock(chip->mutex);
+                schedule();
+                remove_wait_queue(&chip->wq, &wait);
+                spin_lock(chip->mutex);
+                return -EAGAIN;
+        }
+}
+
+static void put_chip(struct map_info *map, struct flchip *chip)
+{
+        if (chip->priv) {
+                struct flchip_shared *shared = chip->priv;
+                spin_lock(&shared->lock);
+                if (shared->writing == chip && chip->oldstate == FL_READY) {
+                        /* We own the ability to write, but we're done */
+                        shared->writing = shared->erasing;
+                        if (shared->writing && shared->writing != chip) {
+                                /* give back the ownership */
+                                struct flchip *loaner = shared->writing;
+                                spin_lock(loaner->mutex);
+                                spin_unlock(&shared->lock);
+                                spin_unlock(chip->mutex);
+                                put_chip(map, loaner);
+                                spin_lock(chip->mutex);
+                                spin_unlock(loaner->mutex);
+                                wake_up(&chip->wq);
+                                return;
+                        }
+                        shared->erasing = NULL;
+                        shared->writing = NULL;
+                } else if (shared->erasing == chip && shared->writing != chip) {
+                        /*
+                         * We own the ability to erase without the ability
+                         * to write, which means the erase was suspended
+                         * and some other partition is currently writing.
+                         * Don't let the switch below mess things up since
+                         * we don't have ownership to resume anything.
+                         */
+                        spin_unlock(&shared->lock);
+                        wake_up(&chip->wq);
+                        return;
+                }
+                spin_unlock(&shared->lock);
+        }
+
+        switch (chip->oldstate) {
+        case FL_ERASING:
+                chip->state = chip->oldstate;
+                map_write(map, CMD(LPDDR_RESUME),
+                                map->pfow_base + PFOW_COMMAND_CODE);
+                map_write(map, CMD(LPDDR_START_EXECUTION),
+                                map->pfow_base + PFOW_COMMAND_EXECUTE);
+                chip->oldstate = FL_READY;
+                chip->state = FL_ERASING;
+                break;
+        case FL_READY:
+                break;
+        default:
+                printk(KERN_ERR "%s: put_chip() called with oldstate %d!\n",
+                                map->name, chip->oldstate);
+        }
+        wake_up(&chip->wq);
+}
+
+int do_write_buffer(struct map_info *map, struct flchip *chip,
+                        unsigned long adr, const struct kvec **pvec,
+                        unsigned long *pvec_seek, int len)
+{
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        map_word datum;
+        int ret, wbufsize, word_gap, words;
+        const struct kvec *vec;
+        unsigned long vec_seek;
+        unsigned long prog_buf_ofs;
+
+        wbufsize = 1 << lpddr->qinfo->BufSizeShift;
+
+        spin_lock(chip->mutex);
+        ret = get_chip(map, chip, FL_WRITING);
+        if (ret) {
+                spin_unlock(chip->mutex);
+                return ret;
+        }
+        /* Figure out the number of words to write */
+        word_gap = (-adr & (map_bankwidth(map)-1));
+        words = (len - word_gap + map_bankwidth(map) - 1) / map_bankwidth(map);
+        if (!word_gap) {
+                words--;
+        } else {
+                word_gap = map_bankwidth(map) - word_gap;
+                adr -= word_gap;
+                datum = map_word_ff(map);
+        }
+        /* Write data */
+        /* Get the program buffer offset from PFOW register data first*/
+        prog_buf_ofs = map->pfow_base + CMDVAL(map_read(map,
+                                map->pfow_base + PFOW_PROGRAM_BUFFER_OFFSET));
+        vec = *pvec;
+        vec_seek = *pvec_seek;
+        do {
+                int n = map_bankwidth(map) - word_gap;
+
+                if (n > vec->iov_len - vec_seek)
+                        n = vec->iov_len - vec_seek;
+                if (n > len)
+                        n = len;
+
+                if (!word_gap && (len < map_bankwidth(map)))
+                        datum = map_word_ff(map);
+
+                datum = map_word_load_partial(map, datum,
+                                vec->iov_base + vec_seek, word_gap, n);
+
+                len -= n;
+                word_gap += n;
+                if (!len || word_gap == map_bankwidth(map)) {
+                        map_write(map, datum, prog_buf_ofs);
+                        prog_buf_ofs += map_bankwidth(map);
+                        word_gap = 0;
+                }
+
+                vec_seek += n;
+                if (vec_seek == vec->iov_len) {
+                        vec++;
+                        vec_seek = 0;
+                }
+        } while (len);
+        *pvec = vec;
+        *pvec_seek = vec_seek;
+
+        /* GO GO GO */
+        send_pfow_command(map, LPDDR_BUFF_PROGRAM, adr, wbufsize, NULL);
+        chip->state = FL_WRITING;
+        ret = wait_for_ready(map, chip, (1<<lpddr->qinfo->ProgBufferTime));
+        if (ret)        {
+                printk(KERN_WARNING"%s Buffer program error: %d at %lx; \n",
+                        map->name, ret, adr);
+                goto out;
+        }
+
+ out:   put_chip(map, chip);
+        spin_unlock(chip->mutex);
+        return ret;
+}
+
+int do_erase_oneblock(struct mtd_info *mtd, loff_t adr)
+{
+        struct map_info *map = mtd->priv;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int chipnum = adr >> lpddr->chipshift;
+        struct flchip *chip = &lpddr->chips[chipnum];
+        int ret;
+
+        spin_lock(chip->mutex);
+        ret = get_chip(map, chip, FL_ERASING);
+        if (ret) {
+                spin_unlock(chip->mutex);
+                return ret;
+        }
+        send_pfow_command(map, LPDDR_BLOCK_ERASE, adr, 0, NULL);
+        chip->state = FL_ERASING;
+        ret = wait_for_ready(map, chip, (1<<lpddr->qinfo->BlockEraseTime)*1000);
+        if (ret) {
+                printk(KERN_WARNING"%s Erase block error %d at : %llx\n",
+                        map->name, ret, adr);
+                goto out;
+        }
+ out:   put_chip(map, chip);
+        spin_unlock(chip->mutex);
+        return ret;
+}
+
+static int lpddr_read(struct mtd_info *mtd, loff_t adr, size_t len,
+                        size_t *retlen, u_char *buf)
+{
+        struct map_info *map = mtd->priv;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int chipnum = adr >> lpddr->chipshift;
+        struct flchip *chip = &lpddr->chips[chipnum];
+        int ret = 0;
+
+        spin_lock(chip->mutex);
+        ret = get_chip(map, chip, FL_READY);
+        if (ret) {
+                spin_unlock(chip->mutex);
+                return ret;
+        }
+
+        map_copy_from(map, buf, adr, len);
+        *retlen = len;
+
+        put_chip(map, chip);
+        spin_unlock(chip->mutex);
+        return ret;
+}
+
+static int lpddr_point(struct mtd_info *mtd, loff_t adr, size_t len,
+                        size_t *retlen, void **mtdbuf, resource_size_t *phys)
+{
+        struct map_info *map = mtd->priv;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int chipnum = adr >> lpddr->chipshift;
+        unsigned long ofs, last_end = 0;
+        struct flchip *chip = &lpddr->chips[chipnum];
+        int ret = 0;
+
+        if (!map->virt || (adr + len > mtd->size))
+                return -EINVAL;
+
+        /* ofs: offset within the first chip that the first read should start */
+        ofs = adr - (chipnum << lpddr->chipshift);
+
+        *mtdbuf = (void *)map->virt + chip->start + ofs;
+        *retlen = 0;
+
+        while (len) {
+                unsigned long thislen;
+
+                if (chipnum >= lpddr->numchips)
+                        break;
+
+                /* We cannot point across chips that are virtually disjoint */
+                if (!last_end)
+                        last_end = chip->start;
+                else if (chip->start != last_end)
+                        break;
+
+                if ((len + ofs - 1) >> lpddr->chipshift)
+                        thislen = (1<<lpddr->chipshift) - ofs;
+                else
+                        thislen = len;
+                /* get the chip */
+                spin_lock(chip->mutex);
+                ret = get_chip(map, chip, FL_POINT);
+                spin_unlock(chip->mutex);
+                if (ret)
+                        break;
+
+                chip->state = FL_POINT;
+                chip->ref_point_counter++;
+                *retlen += thislen;
+                len -= thislen;
+
+                ofs = 0;
+                last_end += 1 << lpddr->chipshift;
+                chipnum++;
+                chip = &lpddr->chips[chipnum];
+        }
+        return 0;
+}
+
+static void lpddr_unpoint (struct mtd_info *mtd, loff_t adr, size_t len)
+{
+        struct map_info *map = mtd->priv;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int chipnum = adr >> lpddr->chipshift;
+        unsigned long ofs;
+
+        /* ofs: offset within the first chip that the first read should start */
+        ofs = adr - (chipnum << lpddr->chipshift);
+
+        while (len) {
+                unsigned long thislen;
+                struct flchip *chip;
+
+                chip = &lpddr->chips[chipnum];
+                if (chipnum >= lpddr->numchips)
+                        break;
+
+                if ((len + ofs - 1) >> lpddr->chipshift)
+                        thislen = (1<<lpddr->chipshift) - ofs;
+                else
+                        thislen = len;
+
+                spin_lock(chip->mutex);
+                if (chip->state == FL_POINT) {
+                        chip->ref_point_counter--;
+                        if (chip->ref_point_counter == 0)
+                                chip->state = FL_READY;
+                } else
+                        printk(KERN_WARNING "%s: Warning: unpoint called on non"
+                                        "pointed region\n", map->name);
+
+                put_chip(map, chip);
+                spin_unlock(chip->mutex);
+
+                len -= thislen;
+                ofs = 0;
+                chipnum++;
+        }
+}
+
+static int lpddr_write_buffers(struct mtd_info *mtd, loff_t to, size_t len,
+                                size_t *retlen, const u_char *buf)
+{
+        struct kvec vec;
+
+        vec.iov_base = (void *) buf;
+        vec.iov_len = len;
+
+        return lpddr_writev(mtd, &vec, 1, to, retlen);
+}
+
+
+static int lpddr_writev(struct mtd_info *mtd, const struct kvec *vecs,
+                                unsigned long count, loff_t to, size_t *retlen)
+{
+        struct map_info *map = mtd->priv;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int ret = 0;
+        int chipnum;
+        unsigned long ofs, vec_seek, i;
+        int wbufsize = 1 << lpddr->qinfo->BufSizeShift;
+
+        size_t len = 0;
+
+        for (i = 0; i < count; i++)
+                len += vecs[i].iov_len;
+
+        *retlen = 0;
+        if (!len)
+                return 0;
+
+        chipnum = to >> lpddr->chipshift;
+
+        ofs = to;
+        vec_seek = 0;
+
+        do {
+                /* We must not cross write block boundaries */
+                int size = wbufsize - (ofs & (wbufsize-1));
+
+                if (size > len)
+                        size = len;
+
+                ret = do_write_buffer(map, &lpddr->chips[chipnum],
+                                          ofs, &vecs, &vec_seek, size);
+                if (ret)
+                        return ret;
+
+                ofs += size;
+                (*retlen) += size;
+                len -= size;
+
+                /* Be nice and reschedule with the chip in a usable
+                 * state for other processes */
+                cond_resched();
+
+        } while (len);
+
+        return 0;
+}
+
+static int lpddr_erase(struct mtd_info *mtd, struct erase_info *instr)
+{
+        unsigned long ofs, len;
+        int ret;
+        struct map_info *map = mtd->priv;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int size = 1 << lpddr->qinfo->UniformBlockSizeShift;
+
+        ofs = instr->addr;
+        len = instr->len;
+
+        if (ofs > mtd->size || (len + ofs) > mtd->size)
+                return -EINVAL;
+
+        while (len > 0) {
+                ret = do_erase_oneblock(mtd, ofs);
+                if (ret)
+                        return ret;
+                ofs += size;
+                len -= size;
+        }
+        instr->state = MTD_ERASE_DONE;
+        mtd_erase_callback(instr);
+
+        return 0;
+}
+
+#define DO_XXLOCK_LOCK          1
+#define DO_XXLOCK_UNLOCK        2
+int do_xxlock(struct mtd_info *mtd, loff_t adr, uint32_t len, int thunk)
+{
+        int ret = 0;
+        struct map_info *map = mtd->priv;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int chipnum = adr >> lpddr->chipshift;
+        struct flchip *chip = &lpddr->chips[chipnum];
+
+        spin_lock(chip->mutex);
+        ret = get_chip(map, chip, FL_LOCKING);
+        if (ret) {
+                spin_unlock(chip->mutex);
+                return ret;
+        }
+
+        if (thunk == DO_XXLOCK_LOCK) {
+                send_pfow_command(map, LPDDR_LOCK_BLOCK, adr, adr + len, NULL);
+                chip->state = FL_LOCKING;
+        } else if (thunk == DO_XXLOCK_UNLOCK) {
+                send_pfow_command(map, LPDDR_UNLOCK_BLOCK, adr, adr + len, NULL);
+                chip->state = FL_UNLOCKING;
+        } else
+                BUG();
+
+        ret = wait_for_ready(map, chip, 1);
+        if (ret)        {
+                printk(KERN_ERR "%s: block unlock error status %d \n",
+                                map->name, ret);
+                goto out;
+        }
+out:    put_chip(map, chip);
+        spin_unlock(chip->mutex);
+        return ret;
+}
+
+static int lpddr_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+{
+        return do_xxlock(mtd, ofs, len, DO_XXLOCK_LOCK);
+}
+
+static int lpddr_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+{
+        return do_xxlock(mtd, ofs, len, DO_XXLOCK_UNLOCK);
+}
+
+int word_program(struct map_info *map, loff_t adr, uint32_t curval)
+{
+    int ret;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int chipnum = adr >> lpddr->chipshift;
+        struct flchip *chip = &lpddr->chips[chipnum];
+
+        spin_lock(chip->mutex);
+        ret = get_chip(map, chip, FL_WRITING);
+        if (ret) {
+                spin_unlock(chip->mutex);
+                return ret;
+        }
+
+        send_pfow_command(map, LPDDR_WORD_PROGRAM, adr, 0x00, (map_word *)&curval);
+
+        ret = wait_for_ready(map, chip, (1<<lpddr->qinfo->SingleWordProgTime));
+        if (ret)        {
+                printk(KERN_WARNING"%s word_program error at: %llx; val: %x\n",
+                        map->name, adr, curval);
+                goto out;
+        }
+
+out:    put_chip(map, chip);
+        spin_unlock(chip->mutex);
+        return ret;
+}
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Alexey Korolev <akorolev@infradead.org>");
+MODULE_DESCRIPTION("MTD driver for LPDDR flash chips");
diff --git a/drivers/mtd/lpddr/qinfo_probe.c b/drivers/mtd/lpddr/qinfo_probe.c
new file mode 100644
index 00000000000..79bf40f48b7
--- /dev/null
+++ b/drivers/mtd/lpddr/qinfo_probe.c
@@ -0,0 +1,255 @@
+/*
+ * Probing flash chips with QINFO records.
+ * (C) 2008 Korolev Alexey <akorolev@infradead.org>
+ * (C) 2008 Vasiliy Leonenko <vasiliy.leonenko@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+
+#include <linux/mtd/xip.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/pfow.h>
+#include <linux/mtd/qinfo.h>
+
+static int lpddr_chip_setup(struct map_info *map, struct lpddr_private *lpddr);
+struct mtd_info *lpddr_probe(struct map_info *map);
+static struct lpddr_private *lpddr_probe_chip(struct map_info *map);
+static int lpddr_pfow_present(struct map_info *map,
+                        struct lpddr_private *lpddr);
+
+static struct qinfo_query_info qinfo_array[] = {
+        /* General device info */
+        {0, 0, "DevSizeShift", "Device size 2^n bytes"},
+        {0, 3, "BufSizeShift", "Program buffer size 2^n bytes"},
+        /* Erase block information */
+        {1, 1, "TotalBlocksNum", "Total number of blocks"},
+        {1, 2, "UniformBlockSizeShift", "Uniform block size 2^n bytes"},
+        /* Partition information */
+        {2, 1, "HWPartsNum", "Number of hardware partitions"},
+        /* Optional features */
+        {5, 1, "SuspEraseSupp", "Suspend erase supported"},
+        /* Operation typical time */
+        {10, 0, "SingleWordProgTime", "Single word program 2^n u-sec"},
+        {10, 1, "ProgBufferTime", "Program buffer write 2^n u-sec"},
+        {10, 2, "BlockEraseTime", "Block erase 2^n m-sec"},
+        {10, 3, "FullChipEraseTime", "Full chip erase 2^n m-sec"},
+};
+
+static long lpddr_get_qinforec_pos(struct map_info *map, char *id_str)
+{
+        int qinfo_lines = sizeof(qinfo_array)/sizeof(struct qinfo_query_info);
+        int i;
+        int bankwidth = map_bankwidth(map) * 8;
+        int major, minor;
+
+        for (i = 0; i < qinfo_lines; i++) {
+                if (strcmp(id_str, qinfo_array[i].id_str) == 0) {
+                        major = qinfo_array[i].major & ((1 << bankwidth) - 1);
+                        minor = qinfo_array[i].minor & ((1 << bankwidth) - 1);
+                        return minor | (major << bankwidth);
+                }
+        }
+        printk(KERN_ERR"%s qinfo id string is wrong! \n", map->name);
+        BUG();
+        return -1;
+}
+
+static uint16_t lpddr_info_query(struct map_info *map, char *id_str)
+{
+        unsigned int dsr, val;
+        int bits_per_chip = map_bankwidth(map) * 8;
+        unsigned long adr = lpddr_get_qinforec_pos(map, id_str);
+        int attempts = 20;
+
+        /* Write a request for the PFOW record */
+        map_write(map, CMD(LPDDR_INFO_QUERY),
+                        map->pfow_base + PFOW_COMMAND_CODE);
+        map_write(map, CMD(adr & ((1 << bits_per_chip) - 1)),
+                        map->pfow_base + PFOW_COMMAND_ADDRESS_L);
+        map_write(map, CMD(adr >> bits_per_chip),
+                        map->pfow_base + PFOW_COMMAND_ADDRESS_H);
+        map_write(map, CMD(LPDDR_START_EXECUTION),
+                        map->pfow_base + PFOW_COMMAND_EXECUTE);
+
+        while ((attempts--) > 0) {
+                dsr = CMDVAL(map_read(map, map->pfow_base + PFOW_DSR));
+                if (dsr & DSR_READY_STATUS)
+                        break;
+                udelay(10);
+        }
+
+        val = CMDVAL(map_read(map, map->pfow_base + PFOW_COMMAND_DATA));
+        return val;
+}
+
+static int lpddr_pfow_present(struct map_info *map, struct lpddr_private *lpddr)
+{
+        map_word pfow_val[4];
+
+        /* Check identification string */
+        pfow_val[0] = map_read(map, map->pfow_base + PFOW_QUERY_STRING_P);
+        pfow_val[1] = map_read(map, map->pfow_base + PFOW_QUERY_STRING_F);
+        pfow_val[2] = map_read(map, map->pfow_base + PFOW_QUERY_STRING_O);
+        pfow_val[3] = map_read(map, map->pfow_base + PFOW_QUERY_STRING_W);
+
+        if (!map_word_equal(map, CMD('P'), pfow_val[0]))
+                goto out;
+
+        if (!map_word_equal(map, CMD('F'), pfow_val[1]))
+                goto out;
+
+        if (!map_word_equal(map, CMD('O'), pfow_val[2]))
+                goto out;
+
+        if (!map_word_equal(map, CMD('W'), pfow_val[3]))
+                goto out;
+
+        return 1;       /* "PFOW" is found */
+out:
+        printk(KERN_WARNING"%s: PFOW string at 0x%lx is not found \n",
+                                        map->name, map->pfow_base);
+        return 0;
+}
+
+static int lpddr_chip_setup(struct map_info *map, struct lpddr_private *lpddr)
+{
+
+        lpddr->qinfo = kmalloc(sizeof(struct qinfo_chip), GFP_KERNEL);
+        if (!lpddr->qinfo) {
+                printk(KERN_WARNING "%s: no memory for LPDDR qinfo structure\n",
+                                map->name);
+                return 0;
+        }
+        memset(lpddr->qinfo, 0, sizeof(struct qinfo_chip));
+
+        /* Get the ManuID */
+        lpddr->ManufactId = CMDVAL(map_read(map, map->pfow_base + PFOW_MANUFACTURER_ID));
+        /* Get the DeviceID */
+        lpddr->DevId = CMDVAL(map_read(map, map->pfow_base + PFOW_DEVICE_ID));
+        /* read parameters from chip qinfo table */
+        lpddr->qinfo->DevSizeShift = lpddr_info_query(map, "DevSizeShift");
+        lpddr->qinfo->TotalBlocksNum = lpddr_info_query(map, "TotalBlocksNum");
+        lpddr->qinfo->BufSizeShift = lpddr_info_query(map, "BufSizeShift");
+        lpddr->qinfo->HWPartsNum = lpddr_info_query(map, "HWPartsNum");
+        lpddr->qinfo->UniformBlockSizeShift =
+                                lpddr_info_query(map, "UniformBlockSizeShift");
+        lpddr->qinfo->SuspEraseSupp = lpddr_info_query(map, "SuspEraseSupp");
+        lpddr->qinfo->SingleWordProgTime =
+                                lpddr_info_query(map, "SingleWordProgTime");
+        lpddr->qinfo->ProgBufferTime = lpddr_info_query(map, "ProgBufferTime");
+        lpddr->qinfo->BlockEraseTime = lpddr_info_query(map, "BlockEraseTime");
+        return 1;
+}
+static struct lpddr_private *lpddr_probe_chip(struct map_info *map)
+{
+        struct lpddr_private lpddr;
+        struct lpddr_private *retlpddr;
+        int numvirtchips;
+
+
+        if ((map->pfow_base + 0x1000) >= map->size) {
+                printk(KERN_NOTICE"%s Probe at base (0x%08lx) past the end of"
+                                "the map(0x%08lx)\n", map->name,
+                                (unsigned long)map->pfow_base, map->size - 1);
+                return NULL;
+        }
+        memset(&lpddr, 0, sizeof(struct lpddr_private));
+        if (!lpddr_pfow_present(map, &lpddr))
+                return NULL;
+
+        if (!lpddr_chip_setup(map, &lpddr))
+                return NULL;
+
+        /* Ok so we found a chip */
+        lpddr.chipshift = lpddr.qinfo->DevSizeShift;
+        lpddr.numchips = 1;
+
+        numvirtchips = lpddr.numchips * lpddr.qinfo->HWPartsNum;
+        retlpddr = kmalloc(sizeof(struct lpddr_private) +
+                        numvirtchips * sizeof(struct flchip), GFP_KERNEL);
+        if (!retlpddr)
+                return NULL;
+
+        memset(retlpddr, 0, sizeof(struct lpddr_private) +
+                                numvirtchips * sizeof(struct flchip));
+        memcpy(retlpddr, &lpddr, sizeof(struct lpddr_private));
+
+        retlpddr->numchips = numvirtchips;
+        retlpddr->chipshift = retlpddr->qinfo->DevSizeShift -
+                                __ffs(retlpddr->qinfo->HWPartsNum);
+
+        return retlpddr;
+}
+
+struct mtd_info *lpddr_probe(struct map_info *map)
+{
+        struct mtd_info *mtd = NULL;
+        struct lpddr_private *lpddr;
+
+        /* First probe the map to see if we havecan open PFOW here */
+        lpddr = lpddr_probe_chip(map);
+        if (!lpddr)
+                return NULL;
+
+        map->fldrv_priv = lpddr;
+        mtd = lpddr_cmdset(map);
+        if (mtd) {
+                if (mtd->size > map->size) {
+                        printk(KERN_WARNING "Reducing visibility of %ldKiB chip"
+                                "to %ldKiB\n", (unsigned long)mtd->size >> 10,
+                                (unsigned long)map->size >> 10);
+                        mtd->size = map->size;
+                }
+                return mtd;
+        }
+
+        kfree(lpddr->qinfo);
+        kfree(lpddr);
+        map->fldrv_priv = NULL;
+        return NULL;
+}
+
+static struct mtd_chip_driver lpddr_chipdrv = {
+        .probe          = lpddr_probe,
+        .name           = "qinfo_probe",
+        .module         = THIS_MODULE
+};
+
+static int __init lpddr_probe_init(void)
+{
+        register_mtd_chip_driver(&lpddr_chipdrv);
+        return 0;
+}
+
+static void __exit lpddr_probe_exit(void)
+{
+        unregister_mtd_chip_driver(&lpddr_chipdrv);
+}
+
+module_init(lpddr_probe_init);
+module_exit(lpddr_probe_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Vasiliy Leonenko <vasiliy.leonenko@gmail.com>");
+MODULE_DESCRIPTION("Driver to probe qinfo flash chips");
+
diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index 5ea16936216..0225cbbf22d 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -10,8 +10,8 @@ config MTD_COMPLEX_MAPPINGS
           paged mappings of flash chips.
 
 config MTD_PHYSMAP
-        tristate "CFI Flash device in physical memory map"
-        depends on MTD_CFI || MTD_JEDECPROBE || MTD_ROM
+        tristate "Flash device in physical memory map"
+        depends on MTD_CFI || MTD_JEDECPROBE || MTD_ROM || MTD_LPDDR
         help
           This provides a 'mapping' driver which allows the NOR Flash and
           ROM driver code to communicate with chips which are mapped
@@ -23,9 +23,20 @@ config MTD_PHYSMAP
           To compile this driver as a module, choose M here: the
           module will be called physmap.
 
+config MTD_PHYSMAP_COMPAT
+        bool "Physmap compat support"
+        depends on MTD_PHYSMAP
+        default n
+        help
+          Setup a simple mapping via the Kconfig options.  Normally the
+          physmap configuration options are done via your board's
+          resource file.
+
+          If unsure, say N here.
+
 config MTD_PHYSMAP_START
         hex "Physical start address of flash mapping"
-        depends on MTD_PHYSMAP
+        depends on MTD_PHYSMAP_COMPAT
         default "0x8000000"
         help
           This is the physical memory location at which the flash chips
@@ -37,7 +48,7 @@ config MTD_PHYSMAP_START
 
 config MTD_PHYSMAP_LEN
         hex "Physical length of flash mapping"
-        depends on MTD_PHYSMAP
+        depends on MTD_PHYSMAP_COMPAT
         default "0"
         help
           This is the total length of the mapping of the flash chips on
@@ -51,7 +62,7 @@ config MTD_PHYSMAP_LEN
 
 config MTD_PHYSMAP_BANKWIDTH
         int "Bank width in octets"
-        depends on MTD_PHYSMAP
+        depends on MTD_PHYSMAP_COMPAT
         default "2"
         help
           This is the total width of the data bus of the flash devices
diff --git a/drivers/mtd/maps/alchemy-flash.c b/drivers/mtd/maps/alchemy-flash.c
index 82811bcb043..845ad4f2a54 100644
--- a/drivers/mtd/maps/alchemy-flash.c
+++ b/drivers/mtd/maps/alchemy-flash.c
@@ -111,7 +111,7 @@ static struct mtd_partition alchemy_partitions[] = {
 
 static struct mtd_info *mymtd;
 
-int __init alchemy_mtd_init(void)
+static int __init alchemy_mtd_init(void)
 {
         struct mtd_partition *parts;
         int nb_parts = 0;
diff --git a/drivers/mtd/maps/amd76xrom.c b/drivers/mtd/maps/amd76xrom.c
index d1eec7d3243..237733d094c 100644
--- a/drivers/mtd/maps/amd76xrom.c
+++ b/drivers/mtd/maps/amd76xrom.c
@@ -232,8 +232,8 @@ static int __devinit amd76xrom_init_one (struct pci_dev *pdev,
                 /* Trim the size if we are larger than the map */
                 if (map->mtd->size > map->map.size) {
                         printk(KERN_WARNING MOD_NAME
-                                " rom(%u) larger than window(%lu). fixing...\n",
-                                map->mtd->size, map->map.size);
+                                " rom(%llu) larger than window(%lu). fixing...\n",
+                                (unsigned long long)map->mtd->size, map->map.size);
                         map->mtd->size = map->map.size;
                 }
                 if (window->rsrc.parent) {
diff --git a/drivers/mtd/maps/cfi_flagadm.c b/drivers/mtd/maps/cfi_flagadm.c
index 0ecc3f6d735..b4ed8161191 100644
--- a/drivers/mtd/maps/cfi_flagadm.c
+++ b/drivers/mtd/maps/cfi_flagadm.c
@@ -88,7 +88,7 @@ struct mtd_partition flagadm_parts[] = {
 
 static struct mtd_info *mymtd;
 
-int __init init_flagadm(void)
+static int __init init_flagadm(void)
 {
         printk(KERN_NOTICE "FlagaDM flash device: %x at %x\n",
                         FLASH_SIZE, FLASH_PHYS_ADDR);
diff --git a/drivers/mtd/maps/ck804xrom.c b/drivers/mtd/maps/ck804xrom.c
index 1a6feb4474d..5f7a245ed13 100644
--- a/drivers/mtd/maps/ck804xrom.c
+++ b/drivers/mtd/maps/ck804xrom.c
@@ -263,8 +263,8 @@ static int __devinit ck804xrom_init_one (struct pci_dev *pdev,
                 /* Trim the size if we are larger than the map */
                 if (map->mtd->size > map->map.size) {
                         printk(KERN_WARNING MOD_NAME
-                                " rom(%u) larger than window(%lu). fixing...\n",
-                                map->mtd->size, map->map.size);
+                                " rom(%llu) larger than window(%lu). fixing...\n",
+                                (unsigned long long)map->mtd->size, map->map.size);
                         map->mtd->size = map->map.size;
                 }
                 if (window->rsrc.parent) {
diff --git a/drivers/mtd/maps/dbox2-flash.c b/drivers/mtd/maps/dbox2-flash.c
index e115667bf1d..cfacfa6f45d 100644
--- a/drivers/mtd/maps/dbox2-flash.c
+++ b/drivers/mtd/maps/dbox2-flash.c
@@ -69,7 +69,7 @@ struct map_info dbox2_flash_map = {
         .phys           = WINDOW_ADDR,
 };
 
-int __init init_dbox2_flash(void)
+static int __init init_dbox2_flash(void)
 {
         printk(KERN_NOTICE "D-Box 2 flash driver (size->0x%X mem->0x%X)\n", WINDOW_SIZE, WINDOW_ADDR);
         dbox2_flash_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
diff --git a/drivers/mtd/maps/edb7312.c b/drivers/mtd/maps/edb7312.c
index 9433738c166..be9e90b4458 100644
--- a/drivers/mtd/maps/edb7312.c
+++ b/drivers/mtd/maps/edb7312.c
@@ -71,7 +71,7 @@ static const char *probes[] = { "RedBoot", "cmdlinepart", NULL };
 static int                   mtd_parts_nb = 0;
 static struct mtd_partition *mtd_parts    = 0;
 
-int __init init_edb7312nor(void)
+static int __init init_edb7312nor(void)
 {
         static const char *rom_probe_types[] = PROBETYPES;
         const char **type;
diff --git a/drivers/mtd/maps/esb2rom.c b/drivers/mtd/maps/esb2rom.c
index bbbcdd4c8d1..11a2f57df9c 100644
--- a/drivers/mtd/maps/esb2rom.c
+++ b/drivers/mtd/maps/esb2rom.c
@@ -324,8 +324,8 @@ static int __devinit esb2rom_init_one(struct pci_dev *pdev,
                 /* Trim the size if we are larger than the map */
                 if (map->mtd->size > map->map.size) {
                         printk(KERN_WARNING MOD_NAME
-                                " rom(%u) larger than window(%lu). fixing...\n",
-                                map->mtd->size, map->map.size);
+                                " rom(%llu) larger than window(%lu). fixing...\n",
+                                (unsigned long long)map->mtd->size, map->map.size);
                         map->mtd->size = map->map.size;
                 }
                 if (window->rsrc.parent) {
diff --git a/drivers/mtd/maps/fortunet.c b/drivers/mtd/maps/fortunet.c
index a8e3fde4cbd..1e43124d498 100644
--- a/drivers/mtd/maps/fortunet.c
+++ b/drivers/mtd/maps/fortunet.c
@@ -181,7 +181,7 @@ __setup("MTD_Partition=", MTD_New_Partition);
 /* Backwards-spelling-compatibility */
 __setup("MTD_Partion=", MTD_New_Partition);
 
-int __init init_fortunet(void)
+static int __init init_fortunet(void)
 {
         int     ix,iy;
         for(iy=ix=0;ix<MAX_NUM_REGIONS;ix++)
diff --git a/drivers/mtd/maps/h720x-flash.c b/drivers/mtd/maps/h720x-flash.c
index 3b959fad1c4..72c724fa8c2 100644
--- a/drivers/mtd/maps/h720x-flash.c
+++ b/drivers/mtd/maps/h720x-flash.c
@@ -65,7 +65,7 @@ static const char *probes[] = { "cmdlinepart", NULL };
 /*
  * Initialize FLASH support
  */
-int __init h720x_mtd_init(void)
+static int __init h720x_mtd_init(void)
 {
 
         char    *part_type = NULL;
diff --git a/drivers/mtd/maps/ichxrom.c b/drivers/mtd/maps/ichxrom.c
index aeb6c916e23..c32bc28920b 100644
--- a/drivers/mtd/maps/ichxrom.c
+++ b/drivers/mtd/maps/ichxrom.c
@@ -258,8 +258,8 @@ static int __devinit ichxrom_init_one (struct pci_dev *pdev,
                 /* Trim the size if we are larger than the map */
                 if (map->mtd->size > map->map.size) {
                         printk(KERN_WARNING MOD_NAME
-                                " rom(%u) larger than window(%lu). fixing...\n",
-                                map->mtd->size, map->map.size);
+                                " rom(%llu) larger than window(%lu). fixing...\n",
+                                (unsigned long long)map->mtd->size, map->map.size);
                         map->mtd->size = map->map.size;
                 }
                 if (window->rsrc.parent) {
diff --git a/drivers/mtd/maps/impa7.c b/drivers/mtd/maps/impa7.c
index 2682ab51a36..998a27da97f 100644
--- a/drivers/mtd/maps/impa7.c
+++ b/drivers/mtd/maps/impa7.c
@@ -70,7 +70,7 @@ static struct mtd_partition *mtd_parts[NUM_FLASHBANKS];
 
 static const char *probes[] = { "cmdlinepart", NULL };
 
-int __init init_impa7(void)
+static int __init init_impa7(void)
 {
         static const char *rom_probe_types[] = PROBETYPES;
         const char **type;
diff --git a/drivers/mtd/maps/ipaq-flash.c b/drivers/mtd/maps/ipaq-flash.c
index ed58f6a77bd..748c85f635f 100644
--- a/drivers/mtd/maps/ipaq-flash.c
+++ b/drivers/mtd/maps/ipaq-flash.c
@@ -202,7 +202,7 @@ static const char *part_probes[] = { "cmdlinepart", "RedBoot", NULL };
 
 static int __init h1900_special_case(void);
 
-int __init ipaq_mtd_init(void)
+static int __init ipaq_mtd_init(void)
 {
         struct mtd_partition *parts = NULL;
         int nb_parts = 0;
diff --git a/drivers/mtd/maps/mbx860.c b/drivers/mtd/maps/mbx860.c
index 706f67394b0..0eb5a7c8538 100644
--- a/drivers/mtd/maps/mbx860.c
+++ b/drivers/mtd/maps/mbx860.c
@@ -55,7 +55,7 @@ struct map_info mbx_map = {
         .bankwidth = 4,
 };
 
-int __init init_mbx(void)
+static int __init init_mbx(void)
 {
         printk(KERN_NOTICE "Motorola MBX flash device: 0x%x at 0x%x\n", WINDOW_SIZE*4, WINDOW_ADDR);
         mbx_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE * 4);
diff --git a/drivers/mtd/maps/nettel.c b/drivers/mtd/maps/nettel.c
index 965e6c6d6ab..a97133eb9d7 100644
--- a/drivers/mtd/maps/nettel.c
+++ b/drivers/mtd/maps/nettel.c
@@ -226,7 +226,7 @@ static int __init nettel_init(void)
 
         if ((amd_mtd = do_map_probe("jedec_probe", &nettel_amd_map))) {
                 printk(KERN_NOTICE "SNAPGEAR: AMD flash device size = %dK\n",
-                        amd_mtd->size>>10);
+                        (int)(amd_mtd->size>>10));
 
                 amd_mtd->owner = THIS_MODULE;
 
@@ -357,13 +357,12 @@ static int __init nettel_init(void)
                 *intel1par = 0;
         }
 
-        printk(KERN_NOTICE "SNAPGEAR: Intel flash device size = %dK\n",
-                (intel_mtd->size >> 10));
+        printk(KERN_NOTICE "SNAPGEAR: Intel flash device size = %lldKiB\n",
+               (unsigned long long)(intel_mtd->size >> 10));
 
         intel_mtd->owner = THIS_MODULE;
 
-        num_intel_partitions = sizeof(nettel_intel_partitions) /
-                sizeof(nettel_intel_partitions[0]);
+        num_intel_partitions = ARRAY_SIZE(nettel_intel_partitions);
 
         if (intelboot) {
                 /*
diff --git a/drivers/mtd/maps/octagon-5066.c b/drivers/mtd/maps/octagon-5066.c
index 43e04c1d22a..2b2e4509321 100644
--- a/drivers/mtd/maps/octagon-5066.c
+++ b/drivers/mtd/maps/octagon-5066.c
@@ -184,7 +184,7 @@ void cleanup_oct5066(void)
         release_region(PAGE_IO, 1);
 }
 
-int __init init_oct5066(void)
+static int __init init_oct5066(void)
 {
         int i;
         int ret = 0;
diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c
index 1db16e549e3..87743661d48 100644
--- a/drivers/mtd/maps/physmap.c
+++ b/drivers/mtd/maps/physmap.c
@@ -29,7 +29,6 @@ struct physmap_flash_info {
         struct map_info         map[MAX_RESOURCES];
 #ifdef CONFIG_MTD_PARTITIONS
         int                     nr_parts;
-        struct mtd_partition    *parts;
 #endif
 };
 
@@ -56,14 +55,10 @@ static int physmap_flash_remove(struct platform_device *dev)
         for (i = 0; i < MAX_RESOURCES; i++) {
                 if (info->mtd[i] != NULL) {
 #ifdef CONFIG_MTD_PARTITIONS
-                        if (info->nr_parts) {
+                        if (info->nr_parts || physmap_data->nr_parts)
                                 del_mtd_partitions(info->mtd[i]);
-                                kfree(info->parts);
-                        } else if (physmap_data->nr_parts) {
-                                del_mtd_partitions(info->mtd[i]);
-                        } else {
+                        else
                                 del_mtd_device(info->mtd[i]);
-                        }
 #else
                         del_mtd_device(info->mtd[i]);
 #endif
@@ -73,7 +68,12 @@ static int physmap_flash_remove(struct platform_device *dev)
         return 0;
 }
 
-static const char *rom_probe_types[] = { "cfi_probe", "jedec_probe", "map_rom", NULL };
+static const char *rom_probe_types[] = {
+                                        "cfi_probe",
+                                        "jedec_probe",
+                                        "qinfo_probe",
+                                        "map_rom",
+                                        NULL };
 #ifdef CONFIG_MTD_PARTITIONS
 static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", NULL };
 #endif
@@ -86,6 +86,9 @@ static int physmap_flash_probe(struct platform_device *dev)
         int err = 0;
         int i;
         int devices_found = 0;
+#ifdef CONFIG_MTD_PARTITIONS
+        struct mtd_partition *parts;
+#endif
 
         physmap_data = dev->dev.platform_data;
         if (physmap_data == NULL)
@@ -119,6 +122,7 @@ static int physmap_flash_probe(struct platform_device *dev)
                 info->map[i].size = dev->resource[i].end - dev->resource[i].start + 1;
                 info->map[i].bankwidth = physmap_data->width;
                 info->map[i].set_vpp = physmap_data->set_vpp;
+                info->map[i].pfow_base = physmap_data->pfow_base;
 
                 info->map[i].virt = devm_ioremap(&dev->dev, info->map[i].phys,
                                                  info->map[i].size);
@@ -163,9 +167,10 @@ static int physmap_flash_probe(struct platform_device *dev)
                 goto err_out;
 
 #ifdef CONFIG_MTD_PARTITIONS
-        err = parse_mtd_partitions(info->cmtd, part_probe_types, &info->parts, 0);
+        err = parse_mtd_partitions(info->cmtd, part_probe_types, &parts, 0);
         if (err > 0) {
-                add_mtd_partitions(info->cmtd, info->parts, err);
+                add_mtd_partitions(info->cmtd, parts, err);
+                kfree(parts);
                 return 0;
         }
 
@@ -251,14 +256,7 @@ static struct platform_driver physmap_flash_driver = {
 };
 
 
-#ifdef CONFIG_MTD_PHYSMAP_LEN
-#if CONFIG_MTD_PHYSMAP_LEN != 0
-#warning using PHYSMAP compat code
-#define PHYSMAP_COMPAT
-#endif
-#endif
-
-#ifdef PHYSMAP_COMPAT
+#ifdef CONFIG_MTD_PHYSMAP_COMPAT
 static struct physmap_flash_data physmap_flash_data = {
         .width          = CONFIG_MTD_PHYSMAP_BANKWIDTH,
 };
@@ -302,7 +300,7 @@ static int __init physmap_init(void)
         int err;
 
         err = platform_driver_register(&physmap_flash_driver);
-#ifdef PHYSMAP_COMPAT
+#ifdef CONFIG_MTD_PHYSMAP_COMPAT
         if (err == 0)
                 platform_device_register(&physmap_flash);
 #endif
@@ -312,7 +310,7 @@ static int __init physmap_init(void)
 
 static void __exit physmap_exit(void)
 {
-#ifdef PHYSMAP_COMPAT
+#ifdef CONFIG_MTD_PHYSMAP_COMPAT
         platform_device_unregister(&physmap_flash);
 #endif
         platform_driver_unregister(&physmap_flash_driver);
@@ -326,8 +324,7 @@ MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
 MODULE_DESCRIPTION("Generic configurable MTD map driver");
 
 /* legacy platform drivers can't hotplug or coldplg */
-#ifndef PHYSMAP_COMPAT
+#ifndef CONFIG_MTD_PHYSMAP_COMPAT
 /* work with hotplug and coldplug */
 MODULE_ALIAS("platform:physmap-flash");
 #endif
-
diff --git a/drivers/mtd/maps/pmcmsp-flash.c b/drivers/mtd/maps/pmcmsp-flash.c
index f43ba2815cb..4768bd5459d 100644
--- a/drivers/mtd/maps/pmcmsp-flash.c
+++ b/drivers/mtd/maps/pmcmsp-flash.c
@@ -48,7 +48,7 @@ static int fcnt;
 
 #define DEBUG_MARKER printk(KERN_NOTICE "%s[%d]\n", __func__, __LINE__)
 
-int __init init_msp_flash(void)
+static int __init init_msp_flash(void)
 {
         int i, j;
         int offset, coff;
diff --git a/drivers/mtd/maps/redwood.c b/drivers/mtd/maps/redwood.c
index de002eb1a7f..933c0b63b01 100644
--- a/drivers/mtd/maps/redwood.c
+++ b/drivers/mtd/maps/redwood.c
@@ -122,7 +122,7 @@ struct map_info redwood_flash_map = {
 
 static struct mtd_info *redwood_mtd;
 
-int __init init_redwood_flash(void)
+static int __init init_redwood_flash(void)
 {
         int err;
 
diff --git a/drivers/mtd/maps/rpxlite.c b/drivers/mtd/maps/rpxlite.c
index 14d90edb443..3e3ef53d4fd 100644
--- a/drivers/mtd/maps/rpxlite.c
+++ b/drivers/mtd/maps/rpxlite.c
@@ -23,7 +23,7 @@ static struct map_info rpxlite_map = {
         .phys = WINDOW_ADDR,
 };
 
-int __init init_rpxlite(void)
+static int __init init_rpxlite(void)
 {
         printk(KERN_NOTICE "RPX Lite or CLLF flash device: %x at %x\n", WINDOW_SIZE*4, WINDOW_ADDR);
         rpxlite_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE * 4);
diff --git a/drivers/mtd/maps/sbc8240.c b/drivers/mtd/maps/sbc8240.c
index 6e1e99cd2b5..d5374cdcb16 100644
--- a/drivers/mtd/maps/sbc8240.c
+++ b/drivers/mtd/maps/sbc8240.c
@@ -136,7 +136,7 @@ static struct mtd_part_def sbc8240_part_banks[NUM_FLASH_BANKS];
 #endif  /* CONFIG_MTD_PARTITIONS */
 
 
-int __init init_sbc8240_mtd (void)
+static int __init init_sbc8240_mtd (void)
 {
         static struct _cjs {
                 u_long addr;
diff --git a/drivers/mtd/maps/scb2_flash.c b/drivers/mtd/maps/scb2_flash.c
index 21169e6d646..7e329f09a54 100644
--- a/drivers/mtd/maps/scb2_flash.c
+++ b/drivers/mtd/maps/scb2_flash.c
@@ -118,7 +118,8 @@ scb2_fixup_mtd(struct mtd_info *mtd)
                 struct mtd_erase_region_info *region = &mtd->eraseregions[i];
 
                 if (region->numblocks * region->erasesize > mtd->size) {
-                        region->numblocks = (mtd->size / region->erasesize);
+                        region->numblocks = ((unsigned long)mtd->size /
+                                                region->erasesize);
                         done = 1;
                 } else {
                         region->numblocks = 0;
@@ -187,8 +188,9 @@ scb2_flash_probe(struct pci_dev *dev, const struct pci_device_id *ent)
                 return -ENODEV;
         }
 
-        printk(KERN_NOTICE MODNAME ": chip size 0x%x at offset 0x%x\n",
-               scb2_mtd->size, SCB2_WINDOW - scb2_mtd->size);
+        printk(KERN_NOTICE MODNAME ": chip size 0x%llx at offset 0x%llx\n",
+               (unsigned long long)scb2_mtd->size,
+               (unsigned long long)(SCB2_WINDOW - scb2_mtd->size));
 
         add_mtd_device(scb2_mtd);
 
diff --git a/drivers/mtd/maps/sharpsl-flash.c b/drivers/mtd/maps/sharpsl-flash.c
index 026eab02818..b392f096c70 100644
--- a/drivers/mtd/maps/sharpsl-flash.c
+++ b/drivers/mtd/maps/sharpsl-flash.c
@@ -47,7 +47,7 @@ static struct mtd_partition sharpsl_partitions[1] = {
         }
 };
 
-int __init init_sharpsl(void)
+static int __init init_sharpsl(void)
 {
         struct mtd_partition *parts;
         int nb_parts = 0;
diff --git a/drivers/mtd/maps/tqm8xxl.c b/drivers/mtd/maps/tqm8xxl.c
index a5d3d8531fa..60146984f4b 100644
--- a/drivers/mtd/maps/tqm8xxl.c
+++ b/drivers/mtd/maps/tqm8xxl.c
@@ -109,7 +109,7 @@ static struct mtd_partition tqm8xxl_fs_partitions[] = {
 };
 #endif
 
-int __init init_tqm_mtd(void)
+static int __init init_tqm_mtd(void)
 {
         int idx = 0, ret = 0;
         unsigned long flash_addr, flash_size, mtd_size = 0;
diff --git a/drivers/mtd/maps/uclinux.c b/drivers/mtd/maps/uclinux.c
index 0dc645f8152..81756e39771 100644
--- a/drivers/mtd/maps/uclinux.c
+++ b/drivers/mtd/maps/uclinux.c
@@ -51,7 +51,7 @@ int uclinux_point(struct mtd_info *mtd, loff_t from, size_t len,
 
 /****************************************************************************/
 
-int __init uclinux_mtd_init(void)
+static int __init uclinux_mtd_init(void)
 {
         struct mtd_info *mtd;
         struct map_info *mapp;
@@ -94,7 +94,7 @@ int __init uclinux_mtd_init(void)
 
 /****************************************************************************/
 
-void __exit uclinux_mtd_cleanup(void)
+static void __exit uclinux_mtd_cleanup(void)
 {
         if (uclinux_ram_mtdinfo) {
                 del_mtd_partitions(uclinux_ram_mtdinfo);
diff --git a/drivers/mtd/maps/vmax301.c b/drivers/mtd/maps/vmax301.c
index 5a0c9a353b0..6d452dcdfe3 100644
--- a/drivers/mtd/maps/vmax301.c
+++ b/drivers/mtd/maps/vmax301.c
@@ -146,7 +146,7 @@ static void __exit cleanup_vmax301(void)
         iounmap((void *)vmax_map[0].map_priv_1 - WINDOW_START);
 }
 
-int __init init_vmax301(void)
+static int __init init_vmax301(void)
 {
         int i;
         unsigned long iomapadr;
diff --git a/drivers/mtd/maps/wr_sbc82xx_flash.c b/drivers/mtd/maps/wr_sbc82xx_flash.c
index 413b0cf9bbd..933a2b6598b 100644
--- a/drivers/mtd/maps/wr_sbc82xx_flash.c
+++ b/drivers/mtd/maps/wr_sbc82xx_flash.c
@@ -74,7 +74,7 @@ do {								\
         }                                                       \
 } while (0);
 
-int __init init_sbc82xx_flash(void)
+static int __init init_sbc82xx_flash(void)
 {
         volatile memctl_cpm2_t *mc = &cpm2_immr->im_memctl;
         int bigflash;
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index bcffeda2df3..e9ec59e9a56 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -450,16 +450,20 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
                 if (!erase)
                         ret = -ENOMEM;
                 else {
+                        struct erase_info_user einfo;
+
                         wait_queue_head_t waitq;
                         DECLARE_WAITQUEUE(wait, current);
 
                         init_waitqueue_head(&waitq);
 
-                        if (copy_from_user(&erase->addr, argp,
+                        if (copy_from_user(&einfo, argp,
                                     sizeof(struct erase_info_user))) {
                                 kfree(erase);
                                 return -EFAULT;
                         }
+                        erase->addr = einfo.start;
+                        erase->len = einfo.length;
                         erase->mtd = mtd;
                         erase->callback = mtdchar_erase_callback;
                         erase->priv = (unsigned long)&waitq;
diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c
index 1a05cf37851..3dbb1b38db6 100644
--- a/drivers/mtd/mtdconcat.c
+++ b/drivers/mtd/mtdconcat.c
@@ -197,7 +197,7 @@ concat_writev(struct mtd_info *mtd, const struct kvec *vecs,
                         continue;
                 }
 
-                size = min(total_len, (size_t)(subdev->size - to));
+                size = min_t(uint64_t, total_len, subdev->size - to);
                 wsize = size; /* store for future use */
 
                 entry_high = entry_low;
@@ -385,7 +385,7 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr)
         struct mtd_concat *concat = CONCAT(mtd);
         struct mtd_info *subdev;
         int i, err;
-        u_int32_t length, offset = 0;
+        uint64_t length, offset = 0;
         struct erase_info *erase;
 
         if (!(mtd->flags & MTD_WRITEABLE))
@@ -518,7 +518,7 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr)
         return 0;
 }
 
-static int concat_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int concat_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct mtd_concat *concat = CONCAT(mtd);
         int i, err = -EINVAL;
@@ -528,7 +528,7 @@ static int concat_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
 
         for (i = 0; i < concat->num_subdev; i++) {
                 struct mtd_info *subdev = concat->subdev[i];
-                size_t size;
+                uint64_t size;
 
                 if (ofs >= subdev->size) {
                         size = 0;
@@ -556,7 +556,7 @@ static int concat_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
         return err;
 }
 
-static int concat_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int concat_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct mtd_concat *concat = CONCAT(mtd);
         int i, err = 0;
@@ -566,7 +566,7 @@ static int concat_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
 
         for (i = 0; i < concat->num_subdev; i++) {
                 struct mtd_info *subdev = concat->subdev[i];
-                size_t size;
+                uint64_t size;
 
                 if (ofs >= subdev->size) {
                         size = 0;
@@ -696,7 +696,7 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
         int i;
         size_t size;
         struct mtd_concat *concat;
-        u_int32_t max_erasesize, curr_erasesize;
+        uint32_t max_erasesize, curr_erasesize;
         int num_erase_region;
 
         printk(KERN_NOTICE "Concatenating MTD devices:\n");
@@ -842,12 +842,14 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
                 concat->mtd.erasesize = curr_erasesize;
                 concat->mtd.numeraseregions = 0;
         } else {
+                uint64_t tmp64;
+
                 /*
                  * erase block size varies across the subdevices: allocate
                  * space to store the data describing the variable erase regions
                  */
                 struct mtd_erase_region_info *erase_region_p;
-                u_int32_t begin, position;
+                uint64_t begin, position;
 
                 concat->mtd.erasesize = max_erasesize;
                 concat->mtd.numeraseregions = num_erase_region;
@@ -879,8 +881,9 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
                                         erase_region_p->offset = begin;
                                         erase_region_p->erasesize =
                                             curr_erasesize;
-                                        erase_region_p->numblocks =
-                                            (position - begin) / curr_erasesize;
+                                        tmp64 = position - begin;
+                                        do_div(tmp64, curr_erasesize);
+                                        erase_region_p->numblocks = tmp64;
                                         begin = position;
 
                                         curr_erasesize = subdev[i]->erasesize;
@@ -897,9 +900,9 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
                                                 erase_region_p->offset = begin;
                                                 erase_region_p->erasesize =
                                                     curr_erasesize;
-                                                erase_region_p->numblocks =
-                                                    (position -
-                                                     begin) / curr_erasesize;
+                                                tmp64 = position - begin;
+                                                do_div(tmp64, curr_erasesize);
+                                                erase_region_p->numblocks = tmp64;
                                                 begin = position;
 
                                                 curr_erasesize =
@@ -909,14 +912,16 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
                                         }
                                         position +=
                                             subdev[i]->eraseregions[j].
-                                            numblocks * curr_erasesize;
+                                            numblocks * (uint64_t)curr_erasesize;
                                 }
                         }
                 }
                 /* Now write the final entry */
                 erase_region_p->offset = begin;
                 erase_region_p->erasesize = curr_erasesize;
-                erase_region_p->numblocks = (position - begin) / curr_erasesize;
+                tmp64 = position - begin;
+                do_div(tmp64, curr_erasesize);
+                erase_region_p->numblocks = tmp64;
         }
 
         return &concat->mtd;
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index a9d24694982..76fe0a1e7a5 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -57,6 +57,19 @@ int add_mtd_device(struct mtd_info *mtd)
                         mtd->index = i;
                         mtd->usecount = 0;
 
+                        if (is_power_of_2(mtd->erasesize))
+                                mtd->erasesize_shift = ffs(mtd->erasesize) - 1;
+                        else
+                                mtd->erasesize_shift = 0;
+
+                        if (is_power_of_2(mtd->writesize))
+                                mtd->writesize_shift = ffs(mtd->writesize) - 1;
+                        else
+                                mtd->writesize_shift = 0;
+
+                        mtd->erasesize_mask = (1 << mtd->erasesize_shift) - 1;
+                        mtd->writesize_mask = (1 << mtd->writesize_shift) - 1;
+
                         /* Some chips always power up locked. Unlock them now */
                         if ((mtd->flags & MTD_WRITEABLE)
                             && (mtd->flags & MTD_POWERUP_LOCK) && mtd->unlock) {
@@ -344,7 +357,8 @@ static inline int mtd_proc_info (char *buf, int i)
         if (!this)
                 return 0;
 
-        return sprintf(buf, "mtd%d: %8.8x %8.8x \"%s\"\n", i, this->size,
+        return sprintf(buf, "mtd%d: %8.8llx %8.8x \"%s\"\n", i,
+                       (unsigned long long)this->size,
                        this->erasesize, this->name);
 }
 
diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c
index aebb3b27edb..1a6b3beabe8 100644
--- a/drivers/mtd/mtdoops.c
+++ b/drivers/mtd/mtdoops.c
@@ -80,9 +80,9 @@ static int mtdoops_erase_block(struct mtd_info *mtd, int offset)
         if (ret) {
                 set_current_state(TASK_RUNNING);
                 remove_wait_queue(&wait_q, &wait);
-                printk (KERN_WARNING "mtdoops: erase of region [0x%x, 0x%x] "
+                printk (KERN_WARNING "mtdoops: erase of region [0x%llx, 0x%llx] "
                                      "on \"%s\" failed\n",
-                        erase.addr, erase.len, mtd->name);
+                        (unsigned long long)erase.addr, (unsigned long long)erase.len, mtd->name);
                 return ret;
         }
 
@@ -289,7 +289,10 @@ static void mtdoops_notify_add(struct mtd_info *mtd)
         }
 
         cxt->mtd = mtd;
-        cxt->oops_pages = mtd->size / OOPS_PAGE_SIZE;
+        if (mtd->size > INT_MAX)
+                cxt->oops_pages = INT_MAX / OOPS_PAGE_SIZE;
+        else
+                cxt->oops_pages = (int)mtd->size / OOPS_PAGE_SIZE;
 
         find_next_position(cxt);
 
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 3728913fa5f..144e6b613a7 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -26,7 +26,7 @@ static LIST_HEAD(mtd_partitions);
 struct mtd_part {
         struct mtd_info mtd;
         struct mtd_info *master;
-        u_int32_t offset;
+        uint64_t offset;
         int index;
         struct list_head list;
         int registered;
@@ -235,7 +235,7 @@ void mtd_erase_callback(struct erase_info *instr)
 }
 EXPORT_SYMBOL_GPL(mtd_erase_callback);
 
-static int part_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int part_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct mtd_part *part = PART(mtd);
         if ((len + ofs) > mtd->size)
@@ -243,7 +243,7 @@ static int part_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
         return part->master->lock(part->master, ofs + part->offset, len);
 }
 
-static int part_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int part_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct mtd_part *part = PART(mtd);
         if ((len + ofs) > mtd->size)
@@ -317,7 +317,7 @@ EXPORT_SYMBOL(del_mtd_partitions);
 
 static struct mtd_part *add_one_partition(struct mtd_info *master,
                 const struct mtd_partition *part, int partno,
-                u_int32_t cur_offset)
+                uint64_t cur_offset)
 {
         struct mtd_part *slave;
 
@@ -395,19 +395,19 @@ static struct mtd_part *add_one_partition(struct mtd_info *master,
                 slave->offset = cur_offset;
         if (slave->offset == MTDPART_OFS_NXTBLK) {
                 slave->offset = cur_offset;
-                if ((cur_offset % master->erasesize) != 0) {
+                if (mtd_mod_by_eb(cur_offset, master) != 0) {
                         /* Round up to next erasesize */
-                        slave->offset = ((cur_offset / master->erasesize) + 1) * master->erasesize;
+                        slave->offset = (mtd_div_by_eb(cur_offset, master) + 1) * master->erasesize;
                         printk(KERN_NOTICE "Moving partition %d: "
-                               "0x%08x -> 0x%08x\n", partno,
-                               cur_offset, slave->offset);
+                               "0x%012llx -> 0x%012llx\n", partno,
+                               (unsigned long long)cur_offset, (unsigned long long)slave->offset);
                 }
         }
         if (slave->mtd.size == MTDPART_SIZ_FULL)
                 slave->mtd.size = master->size - slave->offset;
 
-        printk(KERN_NOTICE "0x%08x-0x%08x : \"%s\"\n", slave->offset,
-                slave->offset + slave->mtd.size, slave->mtd.name);
+        printk(KERN_NOTICE "0x%012llx-0x%012llx : \"%s\"\n", (unsigned long long)slave->offset,
+                (unsigned long long)(slave->offset + slave->mtd.size), slave->mtd.name);
 
         /* let's do some sanity checks */
         if (slave->offset >= master->size) {
@@ -420,13 +420,13 @@ static struct mtd_part *add_one_partition(struct mtd_info *master,
         }
         if (slave->offset + slave->mtd.size > master->size) {
                 slave->mtd.size = master->size - slave->offset;
-                printk(KERN_WARNING"mtd: partition \"%s\" extends beyond the end of device \"%s\" -- size truncated to %#x\n",
-                        part->name, master->name, slave->mtd.size);
+                printk(KERN_WARNING"mtd: partition \"%s\" extends beyond the end of device \"%s\" -- size truncated to %#llx\n",
+                        part->name, master->name, (unsigned long long)slave->mtd.size);
         }
         if (master->numeraseregions > 1) {
                 /* Deal with variable erase size stuff */
                 int i, max = master->numeraseregions;
-                u32 end = slave->offset + slave->mtd.size;
+                u64 end = slave->offset + slave->mtd.size;
                 struct mtd_erase_region_info *regions = master->eraseregions;
 
                 /* Find the first erase regions which is part of this
@@ -449,7 +449,7 @@ static struct mtd_part *add_one_partition(struct mtd_info *master,
         }
 
         if ((slave->mtd.flags & MTD_WRITEABLE) &&
-            (slave->offset % slave->mtd.erasesize)) {
+            mtd_mod_by_eb(slave->offset, &slave->mtd)) {
                 /* Doesn't start on a boundary of major erase size */
                 /* FIXME: Let it be writable if it is on a boundary of
                  * _minor_ erase size though */
@@ -458,7 +458,7 @@ static struct mtd_part *add_one_partition(struct mtd_info *master,
                         part->name);
         }
         if ((slave->mtd.flags & MTD_WRITEABLE) &&
-            (slave->mtd.size % slave->mtd.erasesize)) {
+            mtd_mod_by_eb(slave->mtd.size, &slave->mtd)) {
                 slave->mtd.flags &= ~MTD_WRITEABLE;
                 printk(KERN_WARNING"mtd: partition \"%s\" doesn't end on an erase block -- force read-only\n",
                         part->name);
@@ -466,7 +466,7 @@ static struct mtd_part *add_one_partition(struct mtd_info *master,
 
         slave->mtd.ecclayout = master->ecclayout;
         if (master->block_isbad) {
-                uint32_t offs = 0;
+                uint64_t offs = 0;
 
                 while (offs < slave->mtd.size) {
                         if (master->block_isbad(master,
@@ -501,7 +501,7 @@ int add_mtd_partitions(struct mtd_info *master,
                        int nbparts)
 {
         struct mtd_part *slave;
-        u_int32_t cur_offset = 0;
+        uint64_t cur_offset = 0;
         int i;
 
         printk(KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name);
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index f8ae0400c49..8b12e6e109d 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -163,6 +163,13 @@ config MTD_NAND_S3C2410_HWECC
           incorrect ECC generation, and if using these, the default of
           software ECC is preferable.
 
+config MTD_NAND_NDFC
+        tristate "NDFC NanD Flash Controller"
+        depends on 4xx
+        select MTD_NAND_ECC_SMC
+        help
+         NDFC Nand Flash Controllers are integrated in IBM/AMCC's 4xx SoCs
+
 config MTD_NAND_S3C2410_CLKSTOP
         bool "S3C2410 NAND IDLE clock stop"
         depends on MTD_NAND_S3C2410
diff --git a/drivers/mtd/nand/alauda.c b/drivers/mtd/nand/alauda.c
index 96238039485..6d9649159a1 100644
--- a/drivers/mtd/nand/alauda.c
+++ b/drivers/mtd/nand/alauda.c
@@ -676,11 +676,11 @@ static int alauda_probe(struct usb_interface *interface,
                 goto error;
 
         al->write_out = usb_sndbulkpipe(al->dev,
-                        ep_wr->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+                        usb_endpoint_num(ep_wr));
         al->bulk_in = usb_rcvbulkpipe(al->dev,
-                        ep_in->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+                        usb_endpoint_num(ep_in));
         al->bulk_out = usb_sndbulkpipe(al->dev,
-                        ep_out->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+                        usb_endpoint_num(ep_out));
 
         /* second device is identical up to now */
         memcpy(al+1, al, sizeof(*al));
diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c
index b8064bf3aee..22a6b2e50e9 100644
--- a/drivers/mtd/nand/cafe_nand.c
+++ b/drivers/mtd/nand/cafe_nand.c
@@ -90,7 +90,7 @@ static int timing[3];
 module_param_array(timing, int, &numtimings, 0644);
 
 #ifdef CONFIG_MTD_PARTITIONS
-static const char *part_probes[] = { "RedBoot", NULL };
+static const char *part_probes[] = { "cmdlinepart", "RedBoot", NULL };
 #endif
 
 /* Hrm. Why isn't this already conditional on something in the struct device? */
@@ -805,10 +805,13 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev,
         add_mtd_device(mtd);
 
 #ifdef CONFIG_MTD_PARTITIONS
+#ifdef CONFIG_MTD_CMDLINE_PARTS
+        mtd->name = "cafe_nand";
+#endif
         nr_parts = parse_mtd_partitions(mtd, part_probes, &parts, 0);
         if (nr_parts > 0) {
                 cafe->parts = parts;
-                dev_info(&cafe->pdev->dev, "%d RedBoot partitions found\n", nr_parts);
+                dev_info(&cafe->pdev->dev, "%d partitions found\n", nr_parts);
                 add_mtd_partitions(mtd, parts, nr_parts);
         }
 #endif
diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c
index 4aa5bd6158d..65929db2944 100644
--- a/drivers/mtd/nand/fsl_elbc_nand.c
+++ b/drivers/mtd/nand/fsl_elbc_nand.c
@@ -777,7 +777,9 @@ static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv)
         /* Fill in fsl_elbc_mtd structure */
         priv->mtd.priv = chip;
         priv->mtd.owner = THIS_MODULE;
-        priv->fmr = 0; /* rest filled in later */
+
+        /* Set the ECCM according to the settings in bootloader.*/
+        priv->fmr = in_be32(&lbc->fmr) & FMR_ECCM;
 
         /* fill in nand_chip structure */
         /* set up function call table */
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 0a9c9cd33f9..0c3afccde8a 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2014,13 +2014,14 @@ static int nand_erase(struct mtd_info *mtd, struct erase_info *instr)
 int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
                     int allowbbt)
 {
-        int page, len, status, pages_per_block, ret, chipnr;
+        int page, status, pages_per_block, ret, chipnr;
         struct nand_chip *chip = mtd->priv;
-        int rewrite_bbt[NAND_MAX_CHIPS]={0};
+        loff_t rewrite_bbt[NAND_MAX_CHIPS]={0};
         unsigned int bbt_masked_page = 0xffffffff;
+        loff_t len;
 
-        DEBUG(MTD_DEBUG_LEVEL3, "nand_erase: start = 0x%08x, len = %i\n",
-              (unsigned int)instr->addr, (unsigned int)instr->len);
+        DEBUG(MTD_DEBUG_LEVEL3, "nand_erase: start = 0x%012llx, len = %llu\n",
+              (unsigned long long)instr->addr, (unsigned long long)instr->len);
 
         /* Start address must align on block boundary */
         if (instr->addr & ((1 << chip->phys_erase_shift) - 1)) {
@@ -2116,7 +2117,8 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
                         DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: "
                               "Failed erase, page 0x%08x\n", page);
                         instr->state = MTD_ERASE_FAILED;
-                        instr->fail_addr = (page << chip->page_shift);
+                        instr->fail_addr =
+                                ((loff_t)page << chip->page_shift);
                         goto erase_exit;
                 }
 
@@ -2126,7 +2128,8 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
                  */
                 if (bbt_masked_page != 0xffffffff &&
                     (page & BBT_PAGE_MASK) == bbt_masked_page)
-                            rewrite_bbt[chipnr] = (page << chip->page_shift);
+                            rewrite_bbt[chipnr] =
+                                        ((loff_t)page << chip->page_shift);
 
                 /* Increment page address and decrement length */
                 len -= (1 << chip->phys_erase_shift);
@@ -2173,7 +2176,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
                         continue;
                 /* update the BBT for chip */
                 DEBUG(MTD_DEBUG_LEVEL0, "nand_erase_nand: nand_update_bbt "
-                      "(%d:0x%0x 0x%0x)\n", chipnr, rewrite_bbt[chipnr],
+                      "(%d:0x%0llx 0x%0x)\n", chipnr, rewrite_bbt[chipnr],
                       chip->bbt_td->pages[chipnr]);
                 nand_update_bbt(mtd, rewrite_bbt[chipnr]);
         }
@@ -2365,7 +2368,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
         if (!mtd->name)
                 mtd->name = type->name;
 
-        chip->chipsize = type->chipsize << 20;
+        chip->chipsize = (uint64_t)type->chipsize << 20;
 
         /* Newer devices have all the information in additional id bytes */
         if (!type->pagesize) {
@@ -2423,7 +2426,10 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
 
         chip->bbt_erase_shift = chip->phys_erase_shift =
                 ffs(mtd->erasesize) - 1;
-        chip->chip_shift = ffs(chip->chipsize) - 1;
+        if (chip->chipsize & 0xffffffff)
+                chip->chip_shift = ffs((unsigned)chip->chipsize) - 1;
+        else
+                chip->chip_shift = ffs((unsigned)(chip->chipsize >> 32)) + 32 - 1;
 
         /* Set the bad block position */
         chip->badblockpos = mtd->writesize > 512 ?
@@ -2517,7 +2523,6 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips)
 /**
  * nand_scan_tail - [NAND Interface] Scan for the NAND device
  * @mtd:            MTD device structure
- * @maxchips:       Number of chips to scan for
  *
  * This is the second phase of the normal nand_scan() function. It
  * fills out all the uninitialized function pointers with the defaults
diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c
index 0b1c48595f1..55c23e5cd21 100644
--- a/drivers/mtd/nand/nand_bbt.c
+++ b/drivers/mtd/nand/nand_bbt.c
@@ -171,16 +171,16 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num,
                                 if (tmp == msk)
                                         continue;
                                 if (reserved_block_code && (tmp == reserved_block_code)) {
-                                        printk(KERN_DEBUG "nand_read_bbt: Reserved block at 0x%08x\n",
-                                               ((offs << 2) + (act >> 1)) << this->bbt_erase_shift);
+                                        printk(KERN_DEBUG "nand_read_bbt: Reserved block at 0x%012llx\n",
+                                               (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift);
                                         this->bbt[offs + (act >> 3)] |= 0x2 << (act & 0x06);
                                         mtd->ecc_stats.bbtblocks++;
                                         continue;
                                 }
                                 /* Leave it for now, if its matured we can move this
                                  * message to MTD_DEBUG_LEVEL0 */
-                                printk(KERN_DEBUG "nand_read_bbt: Bad block at 0x%08x\n",
-                                       ((offs << 2) + (act >> 1)) << this->bbt_erase_shift);
+                                printk(KERN_DEBUG "nand_read_bbt: Bad block at 0x%012llx\n",
+                                       (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift);
                                 /* Factory marked bad or worn out ? */
                                 if (tmp == 0)
                                         this->bbt[offs + (act >> 3)] |= 0x3 << (act & 0x06);
@@ -284,7 +284,7 @@ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf,
 
         /* Read the primary version, if available */
         if (td->options & NAND_BBT_VERSION) {
-                scan_read_raw(mtd, buf, td->pages[0] << this->page_shift,
+                scan_read_raw(mtd, buf, (loff_t)td->pages[0] << this->page_shift,
                               mtd->writesize);
                 td->version[0] = buf[mtd->writesize + td->veroffs];
                 printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n",
@@ -293,7 +293,7 @@ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf,
 
         /* Read the mirror version, if available */
         if (md && (md->options & NAND_BBT_VERSION)) {
-                scan_read_raw(mtd, buf, md->pages[0] << this->page_shift,
+                scan_read_raw(mtd, buf, (loff_t)md->pages[0] << this->page_shift,
                               mtd->writesize);
                 md->version[0] = buf[mtd->writesize + md->veroffs];
                 printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n",
@@ -411,7 +411,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
                 numblocks = this->chipsize >> (this->bbt_erase_shift - 1);
                 startblock = chip * numblocks;
                 numblocks += startblock;
-                from = startblock << (this->bbt_erase_shift - 1);
+                from = (loff_t)startblock << (this->bbt_erase_shift - 1);
         }
 
         for (i = startblock; i < numblocks;) {
@@ -428,8 +428,8 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
 
                 if (ret) {
                         this->bbt[i >> 3] |= 0x03 << (i & 0x6);
-                        printk(KERN_WARNING "Bad eraseblock %d at 0x%08x\n",
-                               i >> 1, (unsigned int)from);
+                        printk(KERN_WARNING "Bad eraseblock %d at 0x%012llx\n",
+                               i >> 1, (unsigned long long)from);
                         mtd->ecc_stats.badblocks++;
                 }
 
@@ -495,7 +495,7 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
                 for (block = 0; block < td->maxblocks; block++) {
 
                         int actblock = startblock + dir * block;
-                        loff_t offs = actblock << this->bbt_erase_shift;
+                        loff_t offs = (loff_t)actblock << this->bbt_erase_shift;
 
                         /* Read first page */
                         scan_read_raw(mtd, buf, offs, mtd->writesize);
@@ -719,7 +719,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf,
 
                 memset(&einfo, 0, sizeof(einfo));
                 einfo.mtd = mtd;
-                einfo.addr = (unsigned long)to;
+                einfo.addr = to;
                 einfo.len = 1 << this->bbt_erase_shift;
                 res = nand_erase_nand(mtd, &einfo, 1);
                 if (res < 0)
@@ -729,8 +729,8 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf,
                 if (res < 0)
                         goto outerr;
 
-                printk(KERN_DEBUG "Bad block table written to 0x%08x, version "
-                       "0x%02X\n", (unsigned int)to, td->version[chip]);
+                printk(KERN_DEBUG "Bad block table written to 0x%012llx, version "
+                       "0x%02X\n", (unsigned long long)to, td->version[chip]);
 
                 /* Mark it as used */
                 td->pages[chip] = page;
@@ -910,7 +910,7 @@ static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td)
                         newval = oldval | (0x2 << (block & 0x06));
                         this->bbt[(block >> 3)] = newval;
                         if ((oldval != newval) && td->reserved_block_code)
-                                nand_update_bbt(mtd, block << (this->bbt_erase_shift - 1));
+                                nand_update_bbt(mtd, (loff_t)block << (this->bbt_erase_shift - 1));
                         continue;
                 }
                 update = 0;
@@ -931,7 +931,7 @@ static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td)
                    new ones have been marked, then we need to update the stored
                    bbts.  This should only happen once. */
                 if (update && td->reserved_block_code)
-                        nand_update_bbt(mtd, (block - 2) << (this->bbt_erase_shift - 1));
+                        nand_update_bbt(mtd, (loff_t)(block - 2) << (this->bbt_erase_shift - 1));
         }
 }
 
@@ -1027,7 +1027,6 @@ int nand_update_bbt(struct mtd_info *mtd, loff_t offs)
         if (!this->bbt || !td)
                 return -EINVAL;
 
-        len = mtd->size >> (this->bbt_erase_shift + 2);
         /* Allocate a temporary buffer for one eraseblock incl. oob */
         len = (1 << this->bbt_erase_shift);
         len += (len >> this->page_shift) * mtd->oobsize;
diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c
index ae7c57781a6..cd0711b83ac 100644
--- a/drivers/mtd/nand/nandsim.c
+++ b/drivers/mtd/nand/nandsim.c
@@ -38,6 +38,9 @@
 #include <linux/delay.h>
 #include <linux/list.h>
 #include <linux/random.h>
+#include <linux/sched.h>
+#include <linux/fs.h>
+#include <linux/pagemap.h>
 
 /* Default simulator parameters values */
 #if !defined(CONFIG_NANDSIM_FIRST_ID_BYTE)  || \
@@ -100,6 +103,7 @@ static unsigned int bitflips = 0;
 static char *gravepages = NULL;
 static unsigned int rptwear = 0;
 static unsigned int overridesize = 0;
+static char *cache_file = NULL;
 
 module_param(first_id_byte,  uint, 0400);
 module_param(second_id_byte, uint, 0400);
@@ -122,12 +126,13 @@ module_param(bitflips,       uint, 0400);
 module_param(gravepages,     charp, 0400);
 module_param(rptwear,        uint, 0400);
 module_param(overridesize,   uint, 0400);
+module_param(cache_file,     charp, 0400);
 
 MODULE_PARM_DESC(first_id_byte,  "The first byte returned by NAND Flash 'read ID' command (manufacturer ID)");
 MODULE_PARM_DESC(second_id_byte, "The second byte returned by NAND Flash 'read ID' command (chip ID)");
 MODULE_PARM_DESC(third_id_byte,  "The third byte returned by NAND Flash 'read ID' command");
 MODULE_PARM_DESC(fourth_id_byte, "The fourth byte returned by NAND Flash 'read ID' command");
-MODULE_PARM_DESC(access_delay,   "Initial page access delay (microiseconds)");
+MODULE_PARM_DESC(access_delay,   "Initial page access delay (microseconds)");
 MODULE_PARM_DESC(programm_delay, "Page programm delay (microseconds");
 MODULE_PARM_DESC(erase_delay,    "Sector erase delay (milliseconds)");
 MODULE_PARM_DESC(output_cycle,   "Word output (from flash) time (nanodeconds)");
@@ -153,6 +158,7 @@ MODULE_PARM_DESC(rptwear,        "Number of erases inbetween reporting wear, if
 MODULE_PARM_DESC(overridesize,   "Specifies the NAND Flash size overriding the ID bytes. "
                                  "The size is specified in erase blocks and as the exponent of a power of two"
                                  " e.g. 5 means a size of 32 erase blocks");
+MODULE_PARM_DESC(cache_file,     "File to use to cache nand pages instead of memory");
 
 /* The largest possible page size */
 #define NS_LARGEST_PAGE_SIZE    2048
@@ -266,6 +272,9 @@ MODULE_PARM_DESC(overridesize,   "Specifies the NAND Flash size overriding the I
  */
 #define NS_MAX_PREVSTATES 1
 
+/* Maximum page cache pages needed to read or write a NAND page to the cache_file */
+#define NS_MAX_HELD_PAGES 16
+
 /*
  * A union to represent flash memory contents and flash buffer.
  */
@@ -295,6 +304,9 @@ struct nandsim {
         /* The simulated NAND flash pages array */
         union ns_mem *pages;
 
+        /* Slab allocator for nand pages */
+        struct kmem_cache *nand_pages_slab;
+
         /* Internal buffer of page + OOB size bytes */
         union ns_mem buf;
 
@@ -335,6 +347,13 @@ struct nandsim {
                 int ale; /* address Latch Enable */
                 int wp;  /* write Protect */
         } lines;
+
+        /* Fields needed when using a cache file */
+        struct file *cfile; /* Open file */
+        unsigned char *pages_written; /* Which pages have been written */
+        void *file_buf;
+        struct page *held_pages[NS_MAX_HELD_PAGES];
+        int held_cnt;
 };
 
 /*
@@ -420,25 +439,69 @@ static struct mtd_info *nsmtd;
 static u_char ns_verify_buf[NS_LARGEST_PAGE_SIZE];
 
 /*
- * Allocate array of page pointers and initialize the array to NULL
- * pointers.
+ * Allocate array of page pointers, create slab allocation for an array
+ * and initialize the array by NULL pointers.
  *
  * RETURNS: 0 if success, -ENOMEM if memory alloc fails.
  */
 static int alloc_device(struct nandsim *ns)
 {
-        int i;
+        struct file *cfile;
+        int i, err;
+
+        if (cache_file) {
+                cfile = filp_open(cache_file, O_CREAT | O_RDWR | O_LARGEFILE, 0600);
+                if (IS_ERR(cfile))
+                        return PTR_ERR(cfile);
+                if (!cfile->f_op || (!cfile->f_op->read && !cfile->f_op->aio_read)) {
+                        NS_ERR("alloc_device: cache file not readable\n");
+                        err = -EINVAL;
+                        goto err_close;
+                }
+                if (!cfile->f_op->write && !cfile->f_op->aio_write) {
+                        NS_ERR("alloc_device: cache file not writeable\n");
+                        err = -EINVAL;
+                        goto err_close;
+                }
+                ns->pages_written = vmalloc(ns->geom.pgnum);
+                if (!ns->pages_written) {
+                        NS_ERR("alloc_device: unable to allocate pages written array\n");
+                        err = -ENOMEM;
+                        goto err_close;
+                }
+                ns->file_buf = kmalloc(ns->geom.pgszoob, GFP_KERNEL);
+                if (!ns->file_buf) {
+                        NS_ERR("alloc_device: unable to allocate file buf\n");
+                        err = -ENOMEM;
+                        goto err_free;
+                }
+                ns->cfile = cfile;
+                memset(ns->pages_written, 0, ns->geom.pgnum);
+                return 0;
+        }
 
         ns->pages = vmalloc(ns->geom.pgnum * sizeof(union ns_mem));
         if (!ns->pages) {
-                NS_ERR("alloc_map: unable to allocate page array\n");
+                NS_ERR("alloc_device: unable to allocate page array\n");
                 return -ENOMEM;
         }
         for (i = 0; i < ns->geom.pgnum; i++) {
                 ns->pages[i].byte = NULL;
         }
+        ns->nand_pages_slab = kmem_cache_create("nandsim",
+                                                ns->geom.pgszoob, 0, 0, NULL);
+        if (!ns->nand_pages_slab) {
+                NS_ERR("cache_create: unable to create kmem_cache\n");
+                return -ENOMEM;
+        }
 
         return 0;
+
+err_free:
+        vfree(ns->pages_written);
+err_close:
+        filp_close(cfile, NULL);
+        return err;
 }
 
 /*
@@ -448,11 +511,20 @@ static void free_device(struct nandsim *ns)
 {
         int i;
 
+        if (ns->cfile) {
+                kfree(ns->file_buf);
+                vfree(ns->pages_written);
+                filp_close(ns->cfile, NULL);
+                return;
+        }
+
         if (ns->pages) {
                 for (i = 0; i < ns->geom.pgnum; i++) {
                         if (ns->pages[i].byte)
-                                kfree(ns->pages[i].byte);
+                                kmem_cache_free(ns->nand_pages_slab,
+                                                ns->pages[i].byte);
                 }
+                kmem_cache_destroy(ns->nand_pages_slab);
                 vfree(ns->pages);
         }
 }
@@ -464,7 +536,7 @@ static char *get_partition_name(int i)
         return kstrdup(buf, GFP_KERNEL);
 }
 
-static u_int64_t divide(u_int64_t n, u_int32_t d)
+static uint64_t divide(uint64_t n, uint32_t d)
 {
         do_div(n, d);
         return n;
@@ -480,8 +552,8 @@ static int init_nandsim(struct mtd_info *mtd)
         struct nand_chip *chip = (struct nand_chip *)mtd->priv;
         struct nandsim   *ns   = (struct nandsim *)(chip->priv);
         int i, ret = 0;
-        u_int64_t remains;
-        u_int64_t next_offset;
+        uint64_t remains;
+        uint64_t next_offset;
 
         if (NS_IS_INITIALIZED(ns)) {
                 NS_ERR("init_nandsim: nandsim is already initialized\n");
@@ -548,7 +620,7 @@ static int init_nandsim(struct mtd_info *mtd)
         remains = ns->geom.totsz;
         next_offset = 0;
         for (i = 0; i < parts_num; ++i) {
-                u_int64_t part_sz = (u_int64_t)parts[i] * ns->geom.secsz;
+                uint64_t part_sz = (uint64_t)parts[i] * ns->geom.secsz;
 
                 if (!part_sz || part_sz > remains) {
                         NS_ERR("bad partition size.\n");
@@ -1211,6 +1283,97 @@ static int find_operation(struct nandsim *ns, uint32_t flag)
         return -1;
 }
 
+static void put_pages(struct nandsim *ns)
+{
+        int i;
+
+        for (i = 0; i < ns->held_cnt; i++)
+                page_cache_release(ns->held_pages[i]);
+}
+
+/* Get page cache pages in advance to provide NOFS memory allocation */
+static int get_pages(struct nandsim *ns, struct file *file, size_t count, loff_t pos)
+{
+        pgoff_t index, start_index, end_index;
+        struct page *page;
+        struct address_space *mapping = file->f_mapping;
+
+        start_index = pos >> PAGE_CACHE_SHIFT;
+        end_index = (pos + count - 1) >> PAGE_CACHE_SHIFT;
+        if (end_index - start_index + 1 > NS_MAX_HELD_PAGES)
+                return -EINVAL;
+        ns->held_cnt = 0;
+        for (index = start_index; index <= end_index; index++) {
+                page = find_get_page(mapping, index);
+                if (page == NULL) {
+                        page = find_or_create_page(mapping, index, GFP_NOFS);
+                        if (page == NULL) {
+                                write_inode_now(mapping->host, 1);
+                                page = find_or_create_page(mapping, index, GFP_NOFS);
+                        }
+                        if (page == NULL) {
+                                put_pages(ns);
+                                return -ENOMEM;
+                        }
+                        unlock_page(page);
+                }
+                ns->held_pages[ns->held_cnt++] = page;
+        }
+        return 0;
+}
+
+static int set_memalloc(void)
+{
+        if (current->flags & PF_MEMALLOC)
+                return 0;
+        current->flags |= PF_MEMALLOC;
+        return 1;
+}
+
+static void clear_memalloc(int memalloc)
+{
+        if (memalloc)
+                current->flags &= ~PF_MEMALLOC;
+}
+
+static ssize_t read_file(struct nandsim *ns, struct file *file, void *buf, size_t count, loff_t *pos)
+{
+        mm_segment_t old_fs;
+        ssize_t tx;
+        int err, memalloc;
+
+        err = get_pages(ns, file, count, *pos);
+        if (err)
+                return err;
+        old_fs = get_fs();
+        set_fs(get_ds());
+        memalloc = set_memalloc();
+        tx = vfs_read(file, (char __user *)buf, count, pos);
+        clear_memalloc(memalloc);
+        set_fs(old_fs);
+        put_pages(ns);
+        return tx;
+}
+
+static ssize_t write_file(struct nandsim *ns, struct file *file, void *buf, size_t count, loff_t *pos)
+{
+        mm_segment_t old_fs;
+        ssize_t tx;
+        int err, memalloc;
+
+        err = get_pages(ns, file, count, *pos);
+        if (err)
+                return err;
+        old_fs = get_fs();
+        set_fs(get_ds());
+        memalloc = set_memalloc();
+        tx = vfs_write(file, (char __user *)buf, count, pos);
+        clear_memalloc(memalloc);
+        set_fs(old_fs);
+        put_pages(ns);
+        return tx;
+}
+
 /*
  * Returns a pointer to the current page.
  */
@@ -1227,6 +1390,38 @@ static inline u_char *NS_PAGE_BYTE_OFF(struct nandsim *ns)
         return NS_GET_PAGE(ns)->byte + ns->regs.column + ns->regs.off;
 }
 
+int do_read_error(struct nandsim *ns, int num)
+{
+        unsigned int page_no = ns->regs.row;
+
+        if (read_error(page_no)) {
+                int i;
+                memset(ns->buf.byte, 0xFF, num);
+                for (i = 0; i < num; ++i)
+                        ns->buf.byte[i] = random32();
+                NS_WARN("simulating read error in page %u\n", page_no);
+                return 1;
+        }
+        return 0;
+}
+
+void do_bit_flips(struct nandsim *ns, int num)
+{
+        if (bitflips && random32() < (1 << 22)) {
+                int flips = 1;
+                if (bitflips > 1)
+                        flips = (random32() % (int) bitflips) + 1;
+                while (flips--) {
+                        int pos = random32() % (num * 8);
+                        ns->buf.byte[pos / 8] ^= (1 << (pos % 8));
+                        NS_WARN("read_page: flipping bit %d in page %d "
+                                "reading from %d ecc: corrected=%u failed=%u\n",
+                                pos, ns->regs.row, ns->regs.column + ns->regs.off,
+                                nsmtd->ecc_stats.corrected, nsmtd->ecc_stats.failed);
+                }
+        }
+}
+
 /*
  * Fill the NAND buffer with data read from the specified page.
  */
@@ -1234,36 +1429,40 @@ static void read_page(struct nandsim *ns, int num)
 {
         union ns_mem *mypage;
 
+        if (ns->cfile) {
+                if (!ns->pages_written[ns->regs.row]) {
+                        NS_DBG("read_page: page %d not written\n", ns->regs.row);
+                        memset(ns->buf.byte, 0xFF, num);
+                } else {
+                        loff_t pos;
+                        ssize_t tx;
+
+                        NS_DBG("read_page: page %d written, reading from %d\n",
+                                ns->regs.row, ns->regs.column + ns->regs.off);
+                        if (do_read_error(ns, num))
+                                return;
+                        pos = (loff_t)ns->regs.row * ns->geom.pgszoob + ns->regs.column + ns->regs.off;
+                        tx = read_file(ns, ns->cfile, ns->buf.byte, num, &pos);
+                        if (tx != num) {
+                                NS_ERR("read_page: read error for page %d ret %ld\n", ns->regs.row, (long)tx);
+                                return;
+                        }
+                        do_bit_flips(ns, num);
+                }
+                return;
+        }
+
         mypage = NS_GET_PAGE(ns);
         if (mypage->byte == NULL) {
                 NS_DBG("read_page: page %d not allocated\n", ns->regs.row);
                 memset(ns->buf.byte, 0xFF, num);
         } else {
-                unsigned int page_no = ns->regs.row;
                 NS_DBG("read_page: page %d allocated, reading from %d\n",
                         ns->regs.row, ns->regs.column + ns->regs.off);
-                if (read_error(page_no)) {
-                        int i;
-                        memset(ns->buf.byte, 0xFF, num);
-                        for (i = 0; i < num; ++i)
-                                ns->buf.byte[i] = random32();
-                        NS_WARN("simulating read error in page %u\n", page_no);
+                if (do_read_error(ns, num))
                         return;
-                }
                 memcpy(ns->buf.byte, NS_PAGE_BYTE_OFF(ns), num);
-                if (bitflips && random32() < (1 << 22)) {
-                        int flips = 1;
-                        if (bitflips > 1)
-                                flips = (random32() % (int) bitflips) + 1;
-                        while (flips--) {
-                                int pos = random32() % (num * 8);
-                                ns->buf.byte[pos / 8] ^= (1 << (pos % 8));
-                                NS_WARN("read_page: flipping bit %d in page %d "
-                                        "reading from %d ecc: corrected=%u failed=%u\n",
-                                        pos, ns->regs.row, ns->regs.column + ns->regs.off,
-                                        nsmtd->ecc_stats.corrected, nsmtd->ecc_stats.failed);
-                        }
-                }
+                do_bit_flips(ns, num);
         }
 }
 
@@ -1275,11 +1474,20 @@ static void erase_sector(struct nandsim *ns)
         union ns_mem *mypage;
         int i;
 
+        if (ns->cfile) {
+                for (i = 0; i < ns->geom.pgsec; i++)
+                        if (ns->pages_written[ns->regs.row + i]) {
+                                NS_DBG("erase_sector: freeing page %d\n", ns->regs.row + i);
+                                ns->pages_written[ns->regs.row + i] = 0;
+                        }
+                return;
+        }
+
         mypage = NS_GET_PAGE(ns);
         for (i = 0; i < ns->geom.pgsec; i++) {
                 if (mypage->byte != NULL) {
                         NS_DBG("erase_sector: freeing page %d\n", ns->regs.row+i);
-                        kfree(mypage->byte);
+                        kmem_cache_free(ns->nand_pages_slab, mypage->byte);
                         mypage->byte = NULL;
                 }
                 mypage++;
@@ -1295,16 +1503,57 @@ static int prog_page(struct nandsim *ns, int num)
         union ns_mem *mypage;
         u_char *pg_off;
 
+        if (ns->cfile) {
+                loff_t off, pos;
+                ssize_t tx;
+                int all;
+
+                NS_DBG("prog_page: writing page %d\n", ns->regs.row);
+                pg_off = ns->file_buf + ns->regs.column + ns->regs.off;
+                off = (loff_t)ns->regs.row * ns->geom.pgszoob + ns->regs.column + ns->regs.off;
+                if (!ns->pages_written[ns->regs.row]) {
+                        all = 1;
+                        memset(ns->file_buf, 0xff, ns->geom.pgszoob);
+                } else {
+                        all = 0;
+                        pos = off;
+                        tx = read_file(ns, ns->cfile, pg_off, num, &pos);
+                        if (tx != num) {
+                                NS_ERR("prog_page: read error for page %d ret %ld\n", ns->regs.row, (long)tx);
+                                return -1;
+                        }
+                }
+                for (i = 0; i < num; i++)
+                        pg_off[i] &= ns->buf.byte[i];
+                if (all) {
+                        pos = (loff_t)ns->regs.row * ns->geom.pgszoob;
+                        tx = write_file(ns, ns->cfile, ns->file_buf, ns->geom.pgszoob, &pos);
+                        if (tx != ns->geom.pgszoob) {
+                                NS_ERR("prog_page: write error for page %d ret %ld\n", ns->regs.row, (long)tx);
+                                return -1;
+                        }
+                        ns->pages_written[ns->regs.row] = 1;
+                } else {
+                        pos = off;
+                        tx = write_file(ns, ns->cfile, pg_off, num, &pos);
+                        if (tx != num) {
+                                NS_ERR("prog_page: write error for page %d ret %ld\n", ns->regs.row, (long)tx);
+                                return -1;
+                        }
+                }
+                return 0;
+        }
+
         mypage = NS_GET_PAGE(ns);
         if (mypage->byte == NULL) {
                 NS_DBG("prog_page: allocating page %d\n", ns->regs.row);
                 /*
                  * We allocate memory with GFP_NOFS because a flash FS may
                  * utilize this. If it is holding an FS lock, then gets here,
-                 * then kmalloc runs writeback which goes to the FS again
-                 * and deadlocks. This was seen in practice.
+                 * then kernel memory alloc runs writeback which goes to the FS
+                 * again and deadlocks. This was seen in practice.
                  */
-                mypage->byte = kmalloc(ns->geom.pgszoob, GFP_NOFS);
+                mypage->byte = kmem_cache_alloc(ns->nand_pages_slab, GFP_NOFS);
                 if (mypage->byte == NULL) {
                         NS_ERR("prog_page: error allocating memory for page %d\n", ns->regs.row);
                         return -1;
@@ -1736,13 +1985,17 @@ static void ns_nand_write_byte(struct mtd_info *mtd, u_char byte)
 
                 /* Check if chip is expecting command */
                 if (NS_STATE(ns->nxstate) != STATE_UNKNOWN && !(ns->nxstate & STATE_CMD_MASK)) {
-                        /*
-                         * We are in situation when something else (not command)
-                         * was expected but command was input. In this case ignore
-                         * previous command(s)/state(s) and accept the last one.
-                         */
-                        NS_WARN("write_byte: command (%#x) wasn't expected, expected state is %s, "
-                                "ignore previous states\n", (uint)byte, get_state_name(ns->nxstate));
+                        /* Do not warn if only 2 id bytes are read */
+                        if (!(ns->regs.command == NAND_CMD_READID &&
+                            NS_STATE(ns->state) == STATE_DATAOUT_ID && ns->regs.count == 2)) {
+                                /*
+                                 * We are in situation when something else (not command)
+                                 * was expected but command was input. In this case ignore
+                                 * previous command(s)/state(s) and accept the last one.
+                                 */
+                                NS_WARN("write_byte: command (%#x) wasn't expected, expected state is %s, "
+                                        "ignore previous states\n", (uint)byte, get_state_name(ns->nxstate));
+                        }
                         switch_to_ready_state(ns, NS_STATUS_FAILED(ns));
                 }
 
@@ -2044,7 +2297,7 @@ static int __init ns_init_module(void)
         }
 
         if (overridesize) {
-                u_int64_t new_size = (u_int64_t)nsmtd->erasesize << overridesize;
+                uint64_t new_size = (uint64_t)nsmtd->erasesize << overridesize;
                 if (new_size >> overridesize != nsmtd->erasesize) {
                         NS_ERR("overridesize is too big\n");
                         goto err_exit;
diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c
index 955959eb02d..582cf80f555 100644
--- a/drivers/mtd/nand/ndfc.c
+++ b/drivers/mtd/nand/ndfc.c
@@ -2,12 +2,20 @@
  *  drivers/mtd/ndfc.c
  *
  *  Overview:
- *   Platform independend driver for NDFC (NanD Flash Controller)
+ *   Platform independent driver for NDFC (NanD Flash Controller)
  *   integrated into EP440 cores
  *
+ *   Ported to an OF platform driver by Sean MacLennan
+ *
+ *   The NDFC supports multiple chips, but this driver only supports a
+ *   single chip since I do not have access to any boards with
+ *   multiple chips.
+ *
  *  Author: Thomas Gleixner
  *
  *  Copyright 2006 IBM
+ *  Copyright 2008 PIKA Technologies
+ *    Sean MacLennan <smaclennan@pikatech.com>
  *
  *  This program is free software; you can redistribute  it and/or modify it
  *  under  the terms of  the GNU General  Public License as published by the
@@ -21,27 +29,20 @@
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/ndfc.h>
 #include <linux/mtd/mtd.h>
-#include <linux/platform_device.h>
-
+#include <linux/of_platform.h>
 #include <asm/io.h>
-#ifdef CONFIG_40x
-#include <asm/ibm405.h>
-#else
-#include <asm/ibm44x.h>
-#endif
-
-struct ndfc_nand_mtd {
-        struct mtd_info                 mtd;
-        struct nand_chip                chip;
-        struct platform_nand_chip       *pl_chip;
-};
 
-static struct ndfc_nand_mtd ndfc_mtd[NDFC_MAX_BANKS];
 
 struct ndfc_controller {
-        void __iomem            *ndfcbase;
-        struct nand_hw_control  ndfc_control;
-        atomic_t                childs_active;
+        struct of_device *ofdev;
+        void __iomem *ndfcbase;
+        struct mtd_info mtd;
+        struct nand_chip chip;
+        int chip_select;
+        struct nand_hw_control ndfc_control;
+#ifdef CONFIG_MTD_PARTITIONS
+        struct mtd_partition *parts;
+#endif
 };
 
 static struct ndfc_controller ndfc_ctrl;
@@ -50,17 +51,14 @@ static void ndfc_select_chip(struct mtd_info *mtd, int chip)
 {
         uint32_t ccr;
         struct ndfc_controller *ndfc = &ndfc_ctrl;
-        struct nand_chip *nandchip = mtd->priv;
-        struct ndfc_nand_mtd *nandmtd = nandchip->priv;
-        struct platform_nand_chip *pchip = nandmtd->pl_chip;
 
-        ccr = __raw_readl(ndfc->ndfcbase + NDFC_CCR);
+        ccr = in_be32(ndfc->ndfcbase + NDFC_CCR);
         if (chip >= 0) {
                 ccr &= ~NDFC_CCR_BS_MASK;
-                ccr |= NDFC_CCR_BS(chip + pchip->chip_offset);
+                ccr |= NDFC_CCR_BS(chip + ndfc->chip_select);
         } else
                 ccr |= NDFC_CCR_RESET_CE;
-        __raw_writel(ccr, ndfc->ndfcbase + NDFC_CCR);
+        out_be32(ndfc->ndfcbase + NDFC_CCR, ccr);
 }
 
 static void ndfc_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
@@ -80,7 +78,7 @@ static int ndfc_ready(struct mtd_info *mtd)
 {
         struct ndfc_controller *ndfc = &ndfc_ctrl;
 
-        return __raw_readl(ndfc->ndfcbase + NDFC_STAT) & NDFC_STAT_IS_READY;
+        return in_be32(ndfc->ndfcbase + NDFC_STAT) & NDFC_STAT_IS_READY;
 }
 
 static void ndfc_enable_hwecc(struct mtd_info *mtd, int mode)
@@ -88,9 +86,9 @@ static void ndfc_enable_hwecc(struct mtd_info *mtd, int mode)
         uint32_t ccr;
         struct ndfc_controller *ndfc = &ndfc_ctrl;
 
-        ccr = __raw_readl(ndfc->ndfcbase + NDFC_CCR);
+        ccr = in_be32(ndfc->ndfcbase + NDFC_CCR);
         ccr |= NDFC_CCR_RESET_ECC;
-        __raw_writel(ccr, ndfc->ndfcbase + NDFC_CCR);
+        out_be32(ndfc->ndfcbase + NDFC_CCR, ccr);
         wmb();
 }
 
@@ -102,9 +100,10 @@ static int ndfc_calculate_ecc(struct mtd_info *mtd,
         uint8_t *p = (uint8_t *)&ecc;
 
         wmb();
-        ecc = __raw_readl(ndfc->ndfcbase + NDFC_ECC);
-        ecc_code[0] = p[1];
-        ecc_code[1] = p[2];
+        ecc = in_be32(ndfc->ndfcbase + NDFC_ECC);
+        /* The NDFC uses Smart Media (SMC) bytes order */
+        ecc_code[0] = p[2];
+        ecc_code[1] = p[1];
         ecc_code[2] = p[3];
 
         return 0;
@@ -123,7 +122,7 @@ static void ndfc_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
         uint32_t *p = (uint32_t *) buf;
 
         for(;len > 0; len -= 4)
-                *p++ = __raw_readl(ndfc->ndfcbase + NDFC_DATA);
+                *p++ = in_be32(ndfc->ndfcbase + NDFC_DATA);
 }
 
 static void ndfc_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
@@ -132,7 +131,7 @@ static void ndfc_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
         uint32_t *p = (uint32_t *) buf;
 
         for(;len > 0; len -= 4)
-                __raw_writel(*p++, ndfc->ndfcbase + NDFC_DATA);
+                out_be32(ndfc->ndfcbase + NDFC_DATA, *p++);
 }
 
 static int ndfc_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
@@ -141,7 +140,7 @@ static int ndfc_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
         uint32_t *p = (uint32_t *) buf;
 
         for(;len > 0; len -= 4)
-                if (*p++ != __raw_readl(ndfc->ndfcbase + NDFC_DATA))
+                if (*p++ != in_be32(ndfc->ndfcbase + NDFC_DATA))
                         return -EFAULT;
         return 0;
 }
@@ -149,10 +148,19 @@ static int ndfc_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
 /*
  * Initialize chip structure
  */
-static void ndfc_chip_init(struct ndfc_nand_mtd *mtd)
+static int ndfc_chip_init(struct ndfc_controller *ndfc,
+                          struct device_node *node)
 {
-        struct ndfc_controller *ndfc = &ndfc_ctrl;
-        struct nand_chip *chip = &mtd->chip;
+#ifdef CONFIG_MTD_PARTITIONS
+#ifdef CONFIG_MTD_CMDLINE_PARTS
+        static const char *part_types[] = { "cmdlinepart", NULL };
+#else
+        static const char *part_types[] = { NULL };
+#endif
+#endif
+        struct device_node *flash_np;
+        struct nand_chip *chip = &ndfc->chip;
+        int ret;
 
         chip->IO_ADDR_R = ndfc->ndfcbase + NDFC_DATA;
         chip->IO_ADDR_W = ndfc->ndfcbase + NDFC_DATA;
@@ -160,8 +168,6 @@ static void ndfc_chip_init(struct ndfc_nand_mtd *mtd)
         chip->dev_ready = ndfc_ready;
         chip->select_chip = ndfc_select_chip;
         chip->chip_delay = 50;
-        chip->priv = mtd;
-        chip->options = mtd->pl_chip->options;
         chip->controller = &ndfc->ndfc_control;
         chip->read_buf = ndfc_read_buf;
         chip->write_buf = ndfc_write_buf;
@@ -172,143 +178,136 @@ static void ndfc_chip_init(struct ndfc_nand_mtd *mtd)
         chip->ecc.mode = NAND_ECC_HW;
         chip->ecc.size = 256;
         chip->ecc.bytes = 3;
-        chip->ecclayout = chip->ecc.layout = mtd->pl_chip->ecclayout;
-        mtd->mtd.priv = chip;
-        mtd->mtd.owner = THIS_MODULE;
-}
-
-static int ndfc_chip_probe(struct platform_device *pdev)
-{
-        struct platform_nand_chip *nc = pdev->dev.platform_data;
-        struct ndfc_chip_settings *settings = nc->priv;
-        struct ndfc_controller *ndfc = &ndfc_ctrl;
-        struct ndfc_nand_mtd *nandmtd;
-
-        if (nc->chip_offset >= NDFC_MAX_BANKS || nc->nr_chips > NDFC_MAX_BANKS)
-                return -EINVAL;
-
-        /* Set the bank settings */
-        __raw_writel(settings->bank_settings,
-                     ndfc->ndfcbase + NDFC_BCFG0 + (nc->chip_offset << 2));
 
-        nandmtd = &ndfc_mtd[pdev->id];
-        if (nandmtd->pl_chip)
-                return -EBUSY;
+        ndfc->mtd.priv = chip;
+        ndfc->mtd.owner = THIS_MODULE;
 
-        nandmtd->pl_chip = nc;
-        ndfc_chip_init(nandmtd);
-
-        /* Scan for chips */
-        if (nand_scan(&nandmtd->mtd, nc->nr_chips)) {
-                nandmtd->pl_chip = NULL;
+        flash_np = of_get_next_child(node, NULL);
+        if (!flash_np)
                 return -ENODEV;
+
+        ndfc->mtd.name = kasprintf(GFP_KERNEL, "%s.%s",
+                                   ndfc->ofdev->dev.bus_id, flash_np->name);
+        if (!ndfc->mtd.name) {
+                ret = -ENOMEM;
+                goto err;
         }
 
-#ifdef CONFIG_MTD_PARTITIONS
-        printk("Number of partitions %d\n", nc->nr_partitions);
-        if (nc->nr_partitions) {
-                /* Add the full device, so complete dumps can be made */
-                add_mtd_device(&nandmtd->mtd);
-                add_mtd_partitions(&nandmtd->mtd, nc->partitions,
-                                   nc->nr_partitions);
+        ret = nand_scan(&ndfc->mtd, 1);
+        if (ret)
+                goto err;
 
-        } else
-#else
-                add_mtd_device(&nandmtd->mtd);
+#ifdef CONFIG_MTD_PARTITIONS
+        ret = parse_mtd_partitions(&ndfc->mtd, part_types, &ndfc->parts, 0);
+        if (ret < 0)
+                goto err;
+
+#ifdef CONFIG_MTD_OF_PARTS
+        if (ret == 0) {
+                ret = of_mtd_parse_partitions(&ndfc->ofdev->dev, flash_np,
+                                              &ndfc->parts);
+                if (ret < 0)
+                        goto err;
+        }
 #endif
 
-        atomic_inc(&ndfc->childs_active);
-        return 0;
-}
+        if (ret > 0)
+                ret = add_mtd_partitions(&ndfc->mtd, ndfc->parts, ret);
+        else
+#endif
+                ret = add_mtd_device(&ndfc->mtd);
 
-static int ndfc_chip_remove(struct platform_device *pdev)
-{
-        return 0;
+err:
+        of_node_put(flash_np);
+        if (ret)
+                kfree(ndfc->mtd.name);
+        return ret;
 }
 
-static int ndfc_nand_probe(struct platform_device *pdev)
+static int __devinit ndfc_probe(struct of_device *ofdev,
+                                const struct of_device_id *match)
 {
-        struct platform_nand_ctrl *nc = pdev->dev.platform_data;
-        struct ndfc_controller_settings *settings = nc->priv;
-        struct resource *res = pdev->resource;
         struct ndfc_controller *ndfc = &ndfc_ctrl;
-        unsigned long long phys = settings->ndfc_erpn | res->start;
+        const u32 *reg;
+        u32 ccr;
+        int err, len;
 
-#ifndef CONFIG_PHYS_64BIT
-        ndfc->ndfcbase = ioremap((phys_addr_t)phys, res->end - res->start + 1);
-#else
-        ndfc->ndfcbase = ioremap64(phys, res->end - res->start + 1);
-#endif
+        spin_lock_init(&ndfc->ndfc_control.lock);
+        init_waitqueue_head(&ndfc->ndfc_control.wq);
+        ndfc->ofdev = ofdev;
+        dev_set_drvdata(&ofdev->dev, ndfc);
+
+        /* Read the reg property to get the chip select */
+        reg = of_get_property(ofdev->node, "reg", &len);
+        if (reg == NULL || len != 12) {
+                dev_err(&ofdev->dev, "unable read reg property (%d)\n", len);
+                return -ENOENT;
+        }
+        ndfc->chip_select = reg[0];
+
+        ndfc->ndfcbase = of_iomap(ofdev->node, 0);
         if (!ndfc->ndfcbase) {
-                printk(KERN_ERR "NDFC: ioremap failed\n");
+                dev_err(&ofdev->dev, "failed to get memory\n");
                 return -EIO;
         }
 
-        __raw_writel(settings->ccr_settings, ndfc->ndfcbase + NDFC_CCR);
+        ccr = NDFC_CCR_BS(ndfc->chip_select);
 
-        spin_lock_init(&ndfc->ndfc_control.lock);
-        init_waitqueue_head(&ndfc->ndfc_control.wq);
+        /* It is ok if ccr does not exist - just default to 0 */
+        reg = of_get_property(ofdev->node, "ccr", NULL);
+        if (reg)
+                ccr |= *reg;
 
-        platform_set_drvdata(pdev, ndfc);
+        out_be32(ndfc->ndfcbase + NDFC_CCR, ccr);
 
-        printk("NDFC NAND Driver initialized. Chip-Rev: 0x%08x\n",
-               __raw_readl(ndfc->ndfcbase + NDFC_REVID));
+        /* Set the bank settings if given */
+        reg = of_get_property(ofdev->node, "bank-settings", NULL);
+        if (reg) {
+                int offset = NDFC_BCFG0 + (ndfc->chip_select << 2);
+                out_be32(ndfc->ndfcbase + offset, *reg);
+        }
+
+        err = ndfc_chip_init(ndfc, ofdev->node);
+        if (err) {
+                iounmap(ndfc->ndfcbase);
+                return err;
+        }
 
         return 0;
 }
 
-static int ndfc_nand_remove(struct platform_device *pdev)
+static int __devexit ndfc_remove(struct of_device *ofdev)
 {
-        struct ndfc_controller *ndfc = platform_get_drvdata(pdev);
+        struct ndfc_controller *ndfc = dev_get_drvdata(&ofdev->dev);
 
-        if (atomic_read(&ndfc->childs_active))
-                return -EBUSY;
+        nand_release(&ndfc->mtd);
 
-        if (ndfc) {
-                platform_set_drvdata(pdev, NULL);
-                iounmap(ndfc_ctrl.ndfcbase);
-                ndfc_ctrl.ndfcbase = NULL;
-        }
         return 0;
 }
 
-/* driver device registration */
-
-static struct platform_driver ndfc_chip_driver = {
-        .probe          = ndfc_chip_probe,
-        .remove         = ndfc_chip_remove,
-        .driver         = {
-                .name   = "ndfc-chip",
-                .owner  = THIS_MODULE,
-        },
+static const struct of_device_id ndfc_match[] = {
+        { .compatible = "ibm,ndfc", },
+        {}
 };
+MODULE_DEVICE_TABLE(of, ndfc_match);
 
-static struct platform_driver ndfc_nand_driver = {
-        .probe          = ndfc_nand_probe,
-        .remove         = ndfc_nand_remove,
-        .driver         = {
-                .name   = "ndfc-nand",
-                .owner  = THIS_MODULE,
+static struct of_platform_driver ndfc_driver = {
+        .driver = {
+                .name   = "ndfc",
         },
+        .match_table = ndfc_match,
+        .probe = ndfc_probe,
+        .remove = __devexit_p(ndfc_remove),
 };
 
 static int __init ndfc_nand_init(void)
 {
-        int ret;
-
-        spin_lock_init(&ndfc_ctrl.ndfc_control.lock);
-        init_waitqueue_head(&ndfc_ctrl.ndfc_control.wq);
-
-        ret = platform_driver_register(&ndfc_nand_driver);
-        if (!ret)
-                ret = platform_driver_register(&ndfc_chip_driver);
-        return ret;
+        return of_register_platform_driver(&ndfc_driver);
 }
 
 static void __exit ndfc_nand_exit(void)
 {
-        platform_driver_unregister(&ndfc_chip_driver);
-        platform_driver_unregister(&ndfc_nand_driver);
+        of_unregister_platform_driver(&ndfc_driver);
 }
 
 module_init(ndfc_nand_init);
@@ -316,6 +315,4 @@ module_exit(ndfc_nand_exit);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");
-MODULE_DESCRIPTION("Platform driver for NDFC");
-MODULE_ALIAS("platform:ndfc-chip");
-MODULE_ALIAS("platform:ndfc-nand");
+MODULE_DESCRIPTION("OF Platform driver for NDFC");
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index fc414449561..cc55cbc2b30 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -298,7 +298,7 @@ static struct pxa3xx_nand_flash *builtin_flash_types[] = {
 #define NDTR1_tAR(c)    (min((c), 15) << 0)
 
 /* convert nano-seconds to nand flash controller clock cycles */
-#define ns2cycle(ns, clk)       (int)(((ns) * (clk / 1000000) / 1000) + 1)
+#define ns2cycle(ns, clk)       (int)(((ns) * (clk / 1000000) / 1000) - 1)
 
 static void pxa3xx_nand_set_timing(struct pxa3xx_nand_info *info,
                                    const struct pxa3xx_nand_timing *t)
@@ -368,14 +368,14 @@ static int prepare_read_prog_cmd(struct pxa3xx_nand_info *info,
                 /* large block, 2 cycles for column address
                  * row address starts from 3rd cycle
                  */
-                info->ndcb1 |= (page_addr << 16) | (column & 0xffff);
+                info->ndcb1 |= page_addr << 16;
                 if (info->row_addr_cycles == 3)
                         info->ndcb2 = (page_addr >> 16) & 0xff;
         } else
                 /* small block, 1 cycles for column address
                  * row address starts from 2nd cycle
                  */
-                info->ndcb1 = (page_addr << 8) | (column & 0xff);
+                info->ndcb1 = page_addr << 8;
 
         if (cmd == cmdset->program)
                 info->ndcb0 |= NDCB0_CMD_TYPE(1) | NDCB0_AUTO_RS;
diff --git a/drivers/mtd/nand/sharpsl.c b/drivers/mtd/nand/sharpsl.c
index 30a518e211b..54ec7542a7b 100644
--- a/drivers/mtd/nand/sharpsl.c
+++ b/drivers/mtd/nand/sharpsl.c
@@ -2,6 +2,7 @@
  * drivers/mtd/nand/sharpsl.c
  *
  *  Copyright (C) 2004 Richard Purdie
+ *  Copyright (C) 2008 Dmitry Baryshkov
  *
  *  Based on Sharp's NAND driver sharp_sl.c
  *
@@ -19,22 +20,31 @@
 #include <linux/mtd/nand.h>
 #include <linux/mtd/nand_ecc.h>
 #include <linux/mtd/partitions.h>
+#include <linux/mtd/sharpsl.h>
 #include <linux/interrupt.h>
+#include <linux/platform_device.h>
+
 #include <asm/io.h>
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
 
-static void __iomem *sharpsl_io_base;
-static int sharpsl_phys_base = 0x0C000000;
+struct sharpsl_nand {
+        struct mtd_info         mtd;
+        struct nand_chip        chip;
+
+        void __iomem            *io;
+};
+
+#define mtd_to_sharpsl(_mtd)    container_of(_mtd, struct sharpsl_nand, mtd)
 
 /* register offset */
-#define ECCLPLB         sharpsl_io_base+0x00    /* line parity 7 - 0 bit */
-#define ECCLPUB         sharpsl_io_base+0x04    /* line parity 15 - 8 bit */
-#define ECCCP           sharpsl_io_base+0x08    /* column parity 5 - 0 bit */
-#define ECCCNTR         sharpsl_io_base+0x0C    /* ECC byte counter */
-#define ECCCLRR         sharpsl_io_base+0x10    /* cleare ECC */
-#define FLASHIO         sharpsl_io_base+0x14    /* Flash I/O */
-#define FLASHCTL        sharpsl_io_base+0x18    /* Flash Control */
+#define ECCLPLB         0x00    /* line parity 7 - 0 bit */
+#define ECCLPUB         0x04    /* line parity 15 - 8 bit */
+#define ECCCP           0x08    /* column parity 5 - 0 bit */
+#define ECCCNTR         0x0C    /* ECC byte counter */
+#define ECCCLRR         0x10    /* cleare ECC */
+#define FLASHIO         0x14    /* Flash I/O */
+#define FLASHCTL        0x18    /* Flash Control */
 
 /* Flash control bit */
 #define FLRYBY          (1 << 5)
@@ -45,35 +55,6 @@ static int sharpsl_phys_base = 0x0C000000;
 #define FLCE0           (1 << 0)
 
 /*
- * MTD structure for SharpSL
- */
-static struct mtd_info *sharpsl_mtd = NULL;
-
-/*
- * Define partitions for flash device
- */
-#define DEFAULT_NUM_PARTITIONS 3
-
-static int nr_partitions;
-static struct mtd_partition sharpsl_nand_default_partition_info[] = {
-        {
-         .name = "System Area",
-         .offset = 0,
-         .size = 7 * 1024 * 1024,
-         },
-        {
-         .name = "Root Filesystem",
-         .offset = 7 * 1024 * 1024,
-         .size = 30 * 1024 * 1024,
-         },
-        {
-         .name = "Home Filesystem",
-         .offset = MTDPART_OFS_APPEND,
-         .size = MTDPART_SIZ_FULL,
-         },
-};
-
-/*
  *      hardware specific access to control-lines
  *      ctrl:
  *      NAND_CNE: bit 0 -> ! bit 0 & 4
@@ -84,6 +65,7 @@ static struct mtd_partition sharpsl_nand_default_partition_info[] = {
 static void sharpsl_nand_hwcontrol(struct mtd_info *mtd, int cmd,
                                    unsigned int ctrl)
 {
+        struct sharpsl_nand *sharpsl = mtd_to_sharpsl(mtd);
         struct nand_chip *chip = mtd->priv;
 
         if (ctrl & NAND_CTRL_CHANGE) {
@@ -93,103 +75,97 @@ static void sharpsl_nand_hwcontrol(struct mtd_info *mtd, int cmd,
 
                 bits ^= 0x11;
 
-                writeb((readb(FLASHCTL) & ~0x17) | bits, FLASHCTL);
+                writeb((readb(sharpsl->io + FLASHCTL) & ~0x17) | bits, sharpsl->io + FLASHCTL);
         }
 
         if (cmd != NAND_CMD_NONE)
                 writeb(cmd, chip->IO_ADDR_W);
 }
 
-static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
-
-static struct nand_bbt_descr sharpsl_bbt = {
-        .options = 0,
-        .offs = 4,
-        .len = 2,
-        .pattern = scan_ff_pattern
-};
-
-static struct nand_bbt_descr sharpsl_akita_bbt = {
-        .options = 0,
-        .offs = 4,
-        .len = 1,
-        .pattern = scan_ff_pattern
-};
-
-static struct nand_ecclayout akita_oobinfo = {
-        .eccbytes = 24,
-        .eccpos = {
-                   0x5, 0x1, 0x2, 0x3, 0x6, 0x7, 0x15, 0x11,
-                   0x12, 0x13, 0x16, 0x17, 0x25, 0x21, 0x22, 0x23,
-                   0x26, 0x27, 0x35, 0x31, 0x32, 0x33, 0x36, 0x37},
-        .oobfree = {{0x08, 0x09}}
-};
-
 static int sharpsl_nand_dev_ready(struct mtd_info *mtd)
 {
-        return !((readb(FLASHCTL) & FLRYBY) == 0);
+        struct sharpsl_nand *sharpsl = mtd_to_sharpsl(mtd);
+        return !((readb(sharpsl->io + FLASHCTL) & FLRYBY) == 0);
 }
 
 static void sharpsl_nand_enable_hwecc(struct mtd_info *mtd, int mode)
 {
-        writeb(0, ECCCLRR);
+        struct sharpsl_nand *sharpsl = mtd_to_sharpsl(mtd);
+        writeb(0, sharpsl->io + ECCCLRR);
 }
 
 static int sharpsl_nand_calculate_ecc(struct mtd_info *mtd, const u_char * dat, u_char * ecc_code)
 {
-        ecc_code[0] = ~readb(ECCLPUB);
-        ecc_code[1] = ~readb(ECCLPLB);
-        ecc_code[2] = (~readb(ECCCP) << 2) | 0x03;
-        return readb(ECCCNTR) != 0;
+        struct sharpsl_nand *sharpsl = mtd_to_sharpsl(mtd);
+        ecc_code[0] = ~readb(sharpsl->io + ECCLPUB);
+        ecc_code[1] = ~readb(sharpsl->io + ECCLPLB);
+        ecc_code[2] = (~readb(sharpsl->io + ECCCP) << 2) | 0x03;
+        return readb(sharpsl->io + ECCCNTR) != 0;
 }
 
 #ifdef CONFIG_MTD_PARTITIONS
-const char *part_probes[] = { "cmdlinepart", NULL };
+static const char *part_probes[] = { "cmdlinepart", NULL };
 #endif
 
 /*
  * Main initialization routine
  */
-static int __init sharpsl_nand_init(void)
+static int __devinit sharpsl_nand_probe(struct platform_device *pdev)
 {
         struct nand_chip *this;
+#ifdef CONFIG_MTD_PARTITIONS
         struct mtd_partition *sharpsl_partition_info;
+        int nr_partitions;
+#endif
+        struct resource *r;
         int err = 0;
+        struct sharpsl_nand *sharpsl;
+        struct sharpsl_nand_platform_data *data = pdev->dev.platform_data;
+
+        if (!data) {
+                dev_err(&pdev->dev, "no platform data!\n");
+                return -EINVAL;
+        }
 
         /* Allocate memory for MTD device structure and private data */
-        sharpsl_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
-        if (!sharpsl_mtd) {
+        sharpsl = kzalloc(sizeof(struct sharpsl_nand), GFP_KERNEL);
+        if (!sharpsl) {
                 printk("Unable to allocate SharpSL NAND MTD device structure.\n");
                 return -ENOMEM;
         }
 
+        r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!r) {
+                dev_err(&pdev->dev, "no io memory resource defined!\n");
+                err = -ENODEV;
+                goto err_get_res;
+        }
+
         /* map physical address */
-        sharpsl_io_base = ioremap(sharpsl_phys_base, 0x1000);
-        if (!sharpsl_io_base) {
+        sharpsl->io = ioremap(r->start, resource_size(r));
+        if (!sharpsl->io) {
                 printk("ioremap to access Sharp SL NAND chip failed\n");
-                kfree(sharpsl_mtd);
-                return -EIO;
+                err = -EIO;
+                goto err_ioremap;
         }
 
         /* Get pointer to private data */
-        this = (struct nand_chip *)(&sharpsl_mtd[1]);
-
-        /* Initialize structures */
-        memset(sharpsl_mtd, 0, sizeof(struct mtd_info));
-        memset(this, 0, sizeof(struct nand_chip));
+        this = (struct nand_chip *)(&sharpsl->chip);
 
         /* Link the private data with the MTD structure */
-        sharpsl_mtd->priv = this;
-        sharpsl_mtd->owner = THIS_MODULE;
+        sharpsl->mtd.priv = this;
+        sharpsl->mtd.owner = THIS_MODULE;
+
+        platform_set_drvdata(pdev, sharpsl);
 
         /*
          * PXA initialize
          */
-        writeb(readb(FLASHCTL) | FLWP, FLASHCTL);
+        writeb(readb(sharpsl->io + FLASHCTL) | FLWP, sharpsl->io + FLASHCTL);
 
         /* Set address of NAND IO lines */
-        this->IO_ADDR_R = FLASHIO;
-        this->IO_ADDR_W = FLASHIO;
+        this->IO_ADDR_R = sharpsl->io + FLASHIO;
+        this->IO_ADDR_W = sharpsl->io + FLASHIO;
         /* Set address of hardware control function */
         this->cmd_ctrl = sharpsl_nand_hwcontrol;
         this->dev_ready = sharpsl_nand_dev_ready;
@@ -199,68 +175,89 @@ static int __init sharpsl_nand_init(void)
         this->ecc.mode = NAND_ECC_HW;
         this->ecc.size = 256;
         this->ecc.bytes = 3;
-        this->badblock_pattern = &sharpsl_bbt;
-        if (machine_is_akita() || machine_is_borzoi()) {
-                this->badblock_pattern = &sharpsl_akita_bbt;
-                this->ecc.layout = &akita_oobinfo;
-        }
+        this->badblock_pattern = data->badblock_pattern;
+        this->ecc.layout = data->ecc_layout;
         this->ecc.hwctl = sharpsl_nand_enable_hwecc;
         this->ecc.calculate = sharpsl_nand_calculate_ecc;
         this->ecc.correct = nand_correct_data;
 
         /* Scan to find existence of the device */
-        err = nand_scan(sharpsl_mtd, 1);
-        if (err) {
-                iounmap(sharpsl_io_base);
-                kfree(sharpsl_mtd);
-                return err;
-        }
+        err = nand_scan(&sharpsl->mtd, 1);
+        if (err)
+                goto err_scan;
 
         /* Register the partitions */
-        sharpsl_mtd->name = "sharpsl-nand";
-        nr_partitions = parse_mtd_partitions(sharpsl_mtd, part_probes, &sharpsl_partition_info, 0);
-
+        sharpsl->mtd.name = "sharpsl-nand";
+#ifdef CONFIG_MTD_PARTITIONS
+        nr_partitions = parse_mtd_partitions(&sharpsl->mtd, part_probes, &sharpsl_partition_info, 0);
         if (nr_partitions <= 0) {
-                nr_partitions = DEFAULT_NUM_PARTITIONS;
-                sharpsl_partition_info = sharpsl_nand_default_partition_info;
-                if (machine_is_poodle()) {
-                        sharpsl_partition_info[1].size = 22 * 1024 * 1024;
-                } else if (machine_is_corgi() || machine_is_shepherd()) {
-                        sharpsl_partition_info[1].size = 25 * 1024 * 1024;
-                } else if (machine_is_husky()) {
-                        sharpsl_partition_info[1].size = 53 * 1024 * 1024;
-                } else if (machine_is_spitz()) {
-                        sharpsl_partition_info[1].size = 5 * 1024 * 1024;
-                } else if (machine_is_akita()) {
-                        sharpsl_partition_info[1].size = 58 * 1024 * 1024;
-                } else if (machine_is_borzoi()) {
-                        sharpsl_partition_info[1].size = 32 * 1024 * 1024;
-                }
+                nr_partitions = data->nr_partitions;
+                sharpsl_partition_info = data->partitions;
         }
 
-        add_mtd_partitions(sharpsl_mtd, sharpsl_partition_info, nr_partitions);
+        if (nr_partitions > 0)
+                err = add_mtd_partitions(&sharpsl->mtd, sharpsl_partition_info, nr_partitions);
+        else
+#endif
+        err = add_mtd_device(&sharpsl->mtd);
+        if (err)
+                goto err_add;
 
         /* Return happy */
         return 0;
-}
 
-module_init(sharpsl_nand_init);
+err_add:
+        nand_release(&sharpsl->mtd);
+
+err_scan:
+        platform_set_drvdata(pdev, NULL);
+        iounmap(sharpsl->io);
+err_ioremap:
+err_get_res:
+        kfree(sharpsl);
+        return err;
+}
 
 /*
  * Clean up routine
  */
-static void __exit sharpsl_nand_cleanup(void)
+static int __devexit sharpsl_nand_remove(struct platform_device *pdev)
 {
+        struct sharpsl_nand *sharpsl = platform_get_drvdata(pdev);
+
         /* Release resources, unregister device */
-        nand_release(sharpsl_mtd);
+        nand_release(&sharpsl->mtd);
 
-        iounmap(sharpsl_io_base);
+        platform_set_drvdata(pdev, NULL);
+
+        iounmap(sharpsl->io);
 
         /* Free the MTD device structure */
-        kfree(sharpsl_mtd);
+        kfree(sharpsl);
+
+        return 0;
+}
+
+static struct platform_driver sharpsl_nand_driver = {
+        .driver = {
+                .name   = "sharpsl-nand",
+                .owner  = THIS_MODULE,
+        },
+        .probe          = sharpsl_nand_probe,
+        .remove         = __devexit_p(sharpsl_nand_remove),
+};
+
+static int __init sharpsl_nand_init(void)
+{
+        return platform_driver_register(&sharpsl_nand_driver);
 }
+module_init(sharpsl_nand_init);
 
-module_exit(sharpsl_nand_cleanup);
+static void __exit sharpsl_nand_exit(void)
+{
+        platform_driver_unregister(&sharpsl_nand_driver);
+}
+module_exit(sharpsl_nand_exit);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
diff --git a/drivers/mtd/nftlcore.c b/drivers/mtd/nftlcore.c
index 320b929abe7..d1c4546513f 100644
--- a/drivers/mtd/nftlcore.c
+++ b/drivers/mtd/nftlcore.c
@@ -39,7 +39,7 @@ static void nftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
         struct NFTLrecord *nftl;
         unsigned long temp;
 
-        if (mtd->type != MTD_NANDFLASH)
+        if (mtd->type != MTD_NANDFLASH || mtd->size > UINT_MAX)
                 return;
         /* OK, this is moderately ugly.  But probably safe.  Alternatives? */
         if (memcmp(mtd->name, "DiskOnChip", 10))
diff --git a/drivers/mtd/nftlmount.c b/drivers/mtd/nftlmount.c
index ccc4f209fbb..8b22b1836e9 100644
--- a/drivers/mtd/nftlmount.c
+++ b/drivers/mtd/nftlmount.c
@@ -51,7 +51,7 @@ static int find_boot_record(struct NFTLrecord *nftl)
            the mtd device accordingly.  We could even get rid of
            nftl->EraseSize if there were any point in doing so. */
         nftl->EraseSize = nftl->mbd.mtd->erasesize;
-        nftl->nb_blocks = nftl->mbd.mtd->size / nftl->EraseSize;
+        nftl->nb_blocks = (u32)nftl->mbd.mtd->size / nftl->EraseSize;
 
         nftl->MediaUnit = BLOCK_NIL;
         nftl->SpareMediaUnit = BLOCK_NIL;
@@ -168,7 +168,7 @@ device is already correct.
                         printk(KERN_NOTICE "WARNING: Support for NFTL with UnitSizeFactor 0x%02x is experimental\n",
                                mh->UnitSizeFactor);
                         nftl->EraseSize = nftl->mbd.mtd->erasesize << (0xff - mh->UnitSizeFactor);
-                        nftl->nb_blocks = nftl->mbd.mtd->size / nftl->EraseSize;
+                        nftl->nb_blocks = (u32)nftl->mbd.mtd->size / nftl->EraseSize;
                 }
 #endif
                 nftl->nb_boot_blocks = le16_to_cpu(mh->FirstPhysicalEUN);
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index 90ed319f26e..529af271db1 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -1772,7 +1772,7 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
         int len;
         int ret = 0;
 
-        DEBUG(MTD_DEBUG_LEVEL3, "onenand_erase: start = 0x%08x, len = %i\n", (unsigned int) instr->addr, (unsigned int) instr->len);
+        DEBUG(MTD_DEBUG_LEVEL3, "onenand_erase: start = 0x%012llx, len = %llu\n", (unsigned long long) instr->addr, (unsigned long long) instr->len);
 
         block_size = (1 << this->erase_shift);
 
@@ -1810,7 +1810,7 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
 
                 /* Check if we have a bad block, we do not erase bad blocks */
                 if (onenand_block_isbad_nolock(mtd, addr, 0)) {
-                        printk (KERN_WARNING "onenand_erase: attempt to erase a bad block at addr 0x%08x\n", (unsigned int) addr);
+                        printk (KERN_WARNING "onenand_erase: attempt to erase a bad block at addr 0x%012llx\n", (unsigned long long) addr);
                         instr->state = MTD_ERASE_FAILED;
                         goto erase_exit;
                 }
@@ -2029,7 +2029,7 @@ static int onenand_do_lock_cmd(struct mtd_info *mtd, loff_t ofs, size_t len, int
  *
  * Lock one or more blocks
  */
-static int onenand_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int onenand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         int ret;
 
@@ -2047,7 +2047,7 @@ static int onenand_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
  *
  * Unlock one or more blocks
  */
-static int onenand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int onenand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         int ret;
 
diff --git a/drivers/mtd/rfd_ftl.c b/drivers/mtd/rfd_ftl.c
index e538c0a72ab..d2aa9c46530 100644
--- a/drivers/mtd/rfd_ftl.c
+++ b/drivers/mtd/rfd_ftl.c
@@ -21,8 +21,6 @@
 
 #include <asm/types.h>
 
-#define const_cpu_to_le16       __constant_cpu_to_le16
-
 static int block_size = 0;
 module_param(block_size, int, 0);
 MODULE_PARM_DESC(block_size, "Block size to use by RFD, defaults to erase unit size");
@@ -156,7 +154,7 @@ static int scan_header(struct partition *part)
         size_t retlen;
 
         sectors_per_block = part->block_size / SECTOR_SIZE;
-        part->total_blocks = part->mbd.mtd->size / part->block_size;
+        part->total_blocks = (u32)part->mbd.mtd->size / part->block_size;
 
         if (part->total_blocks < 2)
                 return -ENOENT;
@@ -276,16 +274,17 @@ static void erase_callback(struct erase_info *erase)
 
         part = (struct partition*)erase->priv;
 
-        i = erase->addr / part->block_size;
-        if (i >= part->total_blocks || part->blocks[i].offset != erase->addr) {
-                printk(KERN_ERR PREFIX "erase callback for unknown offset %x "
-                                "on '%s'\n", erase->addr, part->mbd.mtd->name);
+        i = (u32)erase->addr / part->block_size;
+        if (i >= part->total_blocks || part->blocks[i].offset != erase->addr ||
+            erase->addr > UINT_MAX) {
+                printk(KERN_ERR PREFIX "erase callback for unknown offset %llx "
+                                "on '%s'\n", (unsigned long long)erase->addr, part->mbd.mtd->name);
                 return;
         }
 
         if (erase->state != MTD_ERASE_DONE) {
-                printk(KERN_WARNING PREFIX "erase failed at 0x%x on '%s', "
-                                "state %d\n", erase->addr,
+                printk(KERN_WARNING PREFIX "erase failed at 0x%llx on '%s', "
+                                "state %d\n", (unsigned long long)erase->addr,
                                 part->mbd.mtd->name, erase->state);
 
                 part->blocks[i].state = BLOCK_FAILED;
@@ -297,7 +296,7 @@ static void erase_callback(struct erase_info *erase)
                 return;
         }
 
-        magic = const_cpu_to_le16(RFD_MAGIC);
+        magic = cpu_to_le16(RFD_MAGIC);
 
         part->blocks[i].state = BLOCK_ERASED;
         part->blocks[i].free_sectors = part->data_sectors_per_block;
@@ -345,9 +344,9 @@ static int erase_block(struct partition *part, int block)
         rc = part->mbd.mtd->erase(part->mbd.mtd, erase);
 
         if (rc) {
-                printk(KERN_ERR PREFIX "erase of region %x,%x on '%s' "
-                                "failed\n", erase->addr, erase->len,
-                                part->mbd.mtd->name);
+                printk(KERN_ERR PREFIX "erase of region %llx,%llx on '%s' "
+                                "failed\n", (unsigned long long)erase->addr,
+                                (unsigned long long)erase->len, part->mbd.mtd->name);
                 kfree(erase);
         }
 
@@ -587,7 +586,7 @@ static int mark_sector_deleted(struct partition *part, u_long old_addr)
         int block, offset, rc;
         u_long addr;
         size_t retlen;
-        u16 del = const_cpu_to_le16(SECTOR_DELETED);
+        u16 del = cpu_to_le16(SECTOR_DELETED);
 
         block = old_addr / part->block_size;
         offset = (old_addr % part->block_size) / SECTOR_SIZE -
@@ -763,7 +762,7 @@ static void rfd_ftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
 {
         struct partition *part;
 
-        if (mtd->type != MTD_NORFLASH)
+        if (mtd->type != MTD_NORFLASH || mtd->size > UINT_MAX)
                 return;
 
         part = kzalloc(sizeof(struct partition), GFP_KERNEL);
diff --git a/drivers/mtd/ssfdc.c b/drivers/mtd/ssfdc.c
index 33a5d6ed6f1..3f67e00d98e 100644
--- a/drivers/mtd/ssfdc.c
+++ b/drivers/mtd/ssfdc.c
@@ -294,7 +294,8 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
         int cis_sector;
 
         /* Check for small page NAND flash */
-        if (mtd->type != MTD_NANDFLASH || mtd->oobsize != OOB_SIZE)
+        if (mtd->type != MTD_NANDFLASH || mtd->oobsize != OOB_SIZE ||
+            mtd->size > UINT_MAX)
                 return;
 
         /* Check for SSDFC format by reading CIS/IDI sector */
@@ -316,7 +317,7 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
 
         ssfdc->cis_block = cis_sector / (mtd->erasesize >> SECTOR_SHIFT);
         ssfdc->erase_size = mtd->erasesize;
-        ssfdc->map_len = mtd->size / mtd->erasesize;
+        ssfdc->map_len = (u32)mtd->size / mtd->erasesize;
 
         DEBUG(MTD_DEBUG_LEVEL1,
                 "SSFDC_RO: cis_block=%d,erase_size=%d,map_len=%d,n_zones=%d\n",
@@ -327,7 +328,7 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
         ssfdc->heads = 16;
         ssfdc->sectors = 32;
         get_chs(mtd->size, NULL, &ssfdc->heads, &ssfdc->sectors);
-        ssfdc->cylinders = (unsigned short)((mtd->size >> SECTOR_SHIFT) /
+        ssfdc->cylinders = (unsigned short)(((u32)mtd->size >> SECTOR_SHIFT) /
                         ((long)ssfdc->sectors * (long)ssfdc->heads));
 
         DEBUG(MTD_DEBUG_LEVEL1, "SSFDC_RO: using C:%d H:%d S:%d == %ld sects\n",
diff --git a/drivers/mtd/tests/Makefile b/drivers/mtd/tests/Makefile
new file mode 100644
index 00000000000..c1d50133500
--- /dev/null
+++ b/drivers/mtd/tests/Makefile
@@ -0,0 +1,7 @@
+obj-$(CONFIG_MTD_TESTS) += mtd_oobtest.o
+obj-$(CONFIG_MTD_TESTS) += mtd_pagetest.o
+obj-$(CONFIG_MTD_TESTS) += mtd_readtest.o
+obj-$(CONFIG_MTD_TESTS) += mtd_speedtest.o
+obj-$(CONFIG_MTD_TESTS) += mtd_stresstest.o
+obj-$(CONFIG_MTD_TESTS) += mtd_subpagetest.o
+obj-$(CONFIG_MTD_TESTS) += mtd_torturetest.o
diff --git a/drivers/mtd/tests/mtd_oobtest.c b/drivers/mtd/tests/mtd_oobtest.c
new file mode 100644
index 00000000000..afbc3f8126d
--- /dev/null
+++ b/drivers/mtd/tests/mtd_oobtest.c
@@ -0,0 +1,742 @@
+/*
+ * Copyright (C) 2006-2008 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING. If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Test OOB read and write on MTD device.
+ *
+ * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
+ */
+
+#include <asm/div64.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/mtd/mtd.h>
+#include <linux/sched.h>
+
+#define PRINT_PREF KERN_INFO "mtd_oobtest: "
+
+static int dev;
+module_param(dev, int, S_IRUGO);
+MODULE_PARM_DESC(dev, "MTD device number to use");
+
+static struct mtd_info *mtd;
+static unsigned char *readbuf;
+static unsigned char *writebuf;
+static unsigned char *bbt;
+
+static int ebcnt;
+static int pgcnt;
+static int errcnt;
+static int use_offset;
+static int use_len;
+static int use_len_max;
+static int vary_offset;
+static unsigned long next = 1;
+
+static inline unsigned int simple_rand(void)
+{
+        next = next * 1103515245 + 12345;
+        return (unsigned int)((next / 65536) % 32768);
+}
+
+static inline void simple_srand(unsigned long seed)
+{
+        next = seed;
+}
+
+static void set_random_data(unsigned char *buf, size_t len)
+{
+        size_t i;
+
+        for (i = 0; i < len; ++i)
+                buf[i] = simple_rand();
+}
+
+static int erase_eraseblock(int ebnum)
+{
+        int err;
+        struct erase_info ei;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        memset(&ei, 0, sizeof(struct erase_info));
+        ei.mtd  = mtd;
+        ei.addr = addr;
+        ei.len  = mtd->erasesize;
+
+        err = mtd->erase(mtd, &ei);
+        if (err) {
+                printk(PRINT_PREF "error %d while erasing EB %d\n", err, ebnum);
+                return err;
+        }
+
+        if (ei.state == MTD_ERASE_FAILED) {
+                printk(PRINT_PREF "some erase error occurred at EB %d\n",
+                       ebnum);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+static int erase_whole_device(void)
+{
+        int err;
+        unsigned int i;
+
+        printk(PRINT_PREF "erasing whole device\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = erase_eraseblock(i);
+                if (err)
+                        return err;
+                cond_resched();
+        }
+        printk(PRINT_PREF "erased %u eraseblocks\n", i);
+        return 0;
+}
+
+static void do_vary_offset(void)
+{
+        use_len -= 1;
+        if (use_len < 1) {
+                use_offset += 1;
+                if (use_offset >= use_len_max)
+                        use_offset = 0;
+                use_len = use_len_max - use_offset;
+        }
+}
+
+static int write_eraseblock(int ebnum)
+{
+        int i;
+        struct mtd_oob_ops ops;
+        int err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) {
+                set_random_data(writebuf, use_len);
+                ops.mode      = MTD_OOB_AUTO;
+                ops.len       = 0;
+                ops.retlen    = 0;
+                ops.ooblen    = use_len;
+                ops.oobretlen = 0;
+                ops.ooboffs   = use_offset;
+                ops.datbuf    = 0;
+                ops.oobbuf    = writebuf;
+                err = mtd->write_oob(mtd, addr, &ops);
+                if (err || ops.oobretlen != use_len) {
+                        printk(PRINT_PREF "error: writeoob failed at %#llx\n",
+                               (long long)addr);
+                        printk(PRINT_PREF "error: use_len %d, use_offset %d\n",
+                               use_len, use_offset);
+                        errcnt += 1;
+                        return err ? err : -1;
+                }
+                if (vary_offset)
+                        do_vary_offset();
+        }
+
+        return err;
+}
+
+static int write_whole_device(void)
+{
+        int err;
+        unsigned int i;
+
+        printk(PRINT_PREF "writing OOBs of whole device\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = write_eraseblock(i);
+                if (err)
+                        return err;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "written up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "written %u eraseblocks\n", i);
+        return 0;
+}
+
+static int verify_eraseblock(int ebnum)
+{
+        int i;
+        struct mtd_oob_ops ops;
+        int err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) {
+                set_random_data(writebuf, use_len);
+                ops.mode      = MTD_OOB_AUTO;
+                ops.len       = 0;
+                ops.retlen    = 0;
+                ops.ooblen    = use_len;
+                ops.oobretlen = 0;
+                ops.ooboffs   = use_offset;
+                ops.datbuf    = 0;
+                ops.oobbuf    = readbuf;
+                err = mtd->read_oob(mtd, addr, &ops);
+                if (err || ops.oobretlen != use_len) {
+                        printk(PRINT_PREF "error: readoob failed at %#llx\n",
+                               (long long)addr);
+                        errcnt += 1;
+                        return err ? err : -1;
+                }
+                if (memcmp(readbuf, writebuf, use_len)) {
+                        printk(PRINT_PREF "error: verify failed at %#llx\n",
+                               (long long)addr);
+                        errcnt += 1;
+                        if (errcnt > 1000) {
+                                printk(PRINT_PREF "error: too many errors\n");
+                                return -1;
+                        }
+                }
+                if (use_offset != 0 || use_len < mtd->ecclayout->oobavail) {
+                        int k;
+
+                        ops.mode      = MTD_OOB_AUTO;
+                        ops.len       = 0;
+                        ops.retlen    = 0;
+                        ops.ooblen    = mtd->ecclayout->oobavail;
+                        ops.oobretlen = 0;
+                        ops.ooboffs   = 0;
+                        ops.datbuf    = 0;
+                        ops.oobbuf    = readbuf;
+                        err = mtd->read_oob(mtd, addr, &ops);
+                        if (err || ops.oobretlen != mtd->ecclayout->oobavail) {
+                                printk(PRINT_PREF "error: readoob failed at "
+                                       "%#llx\n", (long long)addr);
+                                errcnt += 1;
+                                return err ? err : -1;
+                        }
+                        if (memcmp(readbuf + use_offset, writebuf, use_len)) {
+                                printk(PRINT_PREF "error: verify failed at "
+                                       "%#llx\n", (long long)addr);
+                                errcnt += 1;
+                                if (errcnt > 1000) {
+                                        printk(PRINT_PREF "error: too many "
+                                               "errors\n");
+                                        return -1;
+                                }
+                        }
+                        for (k = 0; k < use_offset; ++k)
+                                if (readbuf[k] != 0xff) {
+                                        printk(PRINT_PREF "error: verify 0xff "
+                                               "failed at %#llx\n",
+                                               (long long)addr);
+                                        errcnt += 1;
+                                        if (errcnt > 1000) {
+                                                printk(PRINT_PREF "error: too "
+                                                       "many errors\n");
+                                                return -1;
+                                        }
+                                }
+                        for (k = use_offset + use_len;
+                             k < mtd->ecclayout->oobavail; ++k)
+                                if (readbuf[k] != 0xff) {
+                                        printk(PRINT_PREF "error: verify 0xff "
+                                               "failed at %#llx\n",
+                                               (long long)addr);
+                                        errcnt += 1;
+                                        if (errcnt > 1000) {
+                                                printk(PRINT_PREF "error: too "
+                                                       "many errors\n");
+                                                return -1;
+                                        }
+                                }
+                }
+                if (vary_offset)
+                        do_vary_offset();
+        }
+        return err;
+}
+
+static int verify_eraseblock_in_one_go(int ebnum)
+{
+        struct mtd_oob_ops ops;
+        int err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+        size_t len = mtd->ecclayout->oobavail * pgcnt;
+
+        set_random_data(writebuf, len);
+        ops.mode      = MTD_OOB_AUTO;
+        ops.len       = 0;
+        ops.retlen    = 0;
+        ops.ooblen    = len;
+        ops.oobretlen = 0;
+        ops.ooboffs   = 0;
+        ops.datbuf    = 0;
+        ops.oobbuf    = readbuf;
+        err = mtd->read_oob(mtd, addr, &ops);
+        if (err || ops.oobretlen != len) {
+                printk(PRINT_PREF "error: readoob failed at %#llx\n",
+                       (long long)addr);
+                errcnt += 1;
+                return err ? err : -1;
+        }
+        if (memcmp(readbuf, writebuf, len)) {
+                printk(PRINT_PREF "error: verify failed at %#llx\n",
+                       (long long)addr);
+                errcnt += 1;
+                if (errcnt > 1000) {
+                        printk(PRINT_PREF "error: too many errors\n");
+                        return -1;
+                }
+        }
+
+        return err;
+}
+
+static int verify_all_eraseblocks(void)
+{
+        int err;
+        unsigned int i;
+
+        printk(PRINT_PREF "verifying all eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = verify_eraseblock(i);
+                if (err)
+                        return err;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "verified up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "verified %u eraseblocks\n", i);
+        return 0;
+}
+
+static int is_block_bad(int ebnum)
+{
+        int ret;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        ret = mtd->block_isbad(mtd, addr);
+        if (ret)
+                printk(PRINT_PREF "block %d is bad\n", ebnum);
+        return ret;
+}
+
+static int scan_for_bad_eraseblocks(void)
+{
+        int i, bad = 0;
+
+        bbt = kmalloc(ebcnt, GFP_KERNEL);
+        if (!bbt) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                return -ENOMEM;
+        }
+        memset(bbt, 0 , ebcnt);
+
+        printk(PRINT_PREF "scanning for bad eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                bbt[i] = is_block_bad(i) ? 1 : 0;
+                if (bbt[i])
+                        bad += 1;
+                cond_resched();
+        }
+        printk(PRINT_PREF "scanned %d eraseblocks, %d are bad\n", i, bad);
+        return 0;
+}
+
+static int __init mtd_oobtest_init(void)
+{
+        int err = 0;
+        unsigned int i;
+        uint64_t tmp;
+        struct mtd_oob_ops ops;
+        loff_t addr = 0, addr0;
+
+        printk(KERN_INFO "\n");
+        printk(KERN_INFO "=================================================\n");
+        printk(PRINT_PREF "MTD device: %d\n", dev);
+
+        mtd = get_mtd_device(NULL, dev);
+        if (IS_ERR(mtd)) {
+                err = PTR_ERR(mtd);
+                printk(PRINT_PREF "error: cannot get MTD device\n");
+                return err;
+        }
+
+        if (mtd->type != MTD_NANDFLASH) {
+                printk(PRINT_PREF "this test requires NAND flash\n");
+                goto out;
+        }
+
+        tmp = mtd->size;
+        do_div(tmp, mtd->erasesize);
+        ebcnt = tmp;
+        pgcnt = mtd->erasesize / mtd->writesize;
+
+        printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
+               "page size %u, count of eraseblocks %u, pages per "
+               "eraseblock %u, OOB size %u\n",
+               (unsigned long long)mtd->size, mtd->erasesize,
+               mtd->writesize, ebcnt, pgcnt, mtd->oobsize);
+
+        err = -ENOMEM;
+        mtd->erasesize = mtd->erasesize;
+        readbuf = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!readbuf) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+        writebuf = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!writebuf) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+
+        err = scan_for_bad_eraseblocks();
+        if (err)
+                goto out;
+
+        use_offset = 0;
+        use_len = mtd->ecclayout->oobavail;
+        use_len_max = mtd->ecclayout->oobavail;
+        vary_offset = 0;
+
+        /* First test: write all OOB, read it back and verify */
+        printk(PRINT_PREF "test 1 of 5\n");
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        simple_srand(1);
+        err = write_whole_device();
+        if (err)
+                goto out;
+
+        simple_srand(1);
+        err = verify_all_eraseblocks();
+        if (err)
+                goto out;
+
+        /*
+         * Second test: write all OOB, a block at a time, read it back and
+         * verify.
+         */
+        printk(PRINT_PREF "test 2 of 5\n");
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        simple_srand(3);
+        err = write_whole_device();
+        if (err)
+                goto out;
+
+        /* Check all eraseblocks */
+        simple_srand(3);
+        printk(PRINT_PREF "verifying all eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = verify_eraseblock_in_one_go(i);
+                if (err)
+                        goto out;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "verified up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "verified %u eraseblocks\n", i);
+
+        /*
+         * Third test: write OOB at varying offsets and lengths, read it back
+         * and verify.
+         */
+        printk(PRINT_PREF "test 3 of 5\n");
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        /* Write all eraseblocks */
+        use_offset = 0;
+        use_len = mtd->ecclayout->oobavail;
+        use_len_max = mtd->ecclayout->oobavail;
+        vary_offset = 1;
+        simple_srand(5);
+        printk(PRINT_PREF "writing OOBs of whole device\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = write_eraseblock(i);
+                if (err)
+                        goto out;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "written up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "written %u eraseblocks\n", i);
+
+        /* Check all eraseblocks */
+        use_offset = 0;
+        use_len = mtd->ecclayout->oobavail;
+        use_len_max = mtd->ecclayout->oobavail;
+        vary_offset = 1;
+        simple_srand(5);
+        err = verify_all_eraseblocks();
+        if (err)
+                goto out;
+
+        use_offset = 0;
+        use_len = mtd->ecclayout->oobavail;
+        use_len_max = mtd->ecclayout->oobavail;
+        vary_offset = 0;
+
+        /* Fourth test: try to write off end of device */
+        printk(PRINT_PREF "test 4 of 5\n");
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        addr0 = 0;
+        for (i = 0; bbt[i] && i < ebcnt; ++i)
+                addr0 += mtd->erasesize;
+
+        /* Attempt to write off end of OOB */
+        ops.mode      = MTD_OOB_AUTO;
+        ops.len       = 0;
+        ops.retlen    = 0;
+        ops.ooblen    = 1;
+        ops.oobretlen = 0;
+        ops.ooboffs   = mtd->ecclayout->oobavail;
+        ops.datbuf    = 0;
+        ops.oobbuf    = writebuf;
+        printk(PRINT_PREF "attempting to start write past end of OOB\n");
+        printk(PRINT_PREF "an error is expected...\n");
+        err = mtd->write_oob(mtd, addr0, &ops);
+        if (err) {
+                printk(PRINT_PREF "error occurred as expected\n");
+                err = 0;
+        } else {
+                printk(PRINT_PREF "error: can write past end of OOB\n");
+                errcnt += 1;
+        }
+
+        /* Attempt to read off end of OOB */
+        ops.mode      = MTD_OOB_AUTO;
+        ops.len       = 0;
+        ops.retlen    = 0;
+        ops.ooblen    = 1;
+        ops.oobretlen = 0;
+        ops.ooboffs   = mtd->ecclayout->oobavail;
+        ops.datbuf    = 0;
+        ops.oobbuf    = readbuf;
+        printk(PRINT_PREF "attempting to start read past end of OOB\n");
+        printk(PRINT_PREF "an error is expected...\n");
+        err = mtd->read_oob(mtd, addr0, &ops);
+        if (err) {
+                printk(PRINT_PREF "error occurred as expected\n");
+                err = 0;
+        } else {
+                printk(PRINT_PREF "error: can read past end of OOB\n");
+                errcnt += 1;
+        }
+
+        if (bbt[ebcnt - 1])
+                printk(PRINT_PREF "skipping end of device tests because last "
+                       "block is bad\n");
+        else {
+                /* Attempt to write off end of device */
+                ops.mode      = MTD_OOB_AUTO;
+                ops.len       = 0;
+                ops.retlen    = 0;
+                ops.ooblen    = mtd->ecclayout->oobavail + 1;
+                ops.oobretlen = 0;
+                ops.ooboffs   = 0;
+                ops.datbuf    = 0;
+                ops.oobbuf    = writebuf;
+                printk(PRINT_PREF "attempting to write past end of device\n");
+                printk(PRINT_PREF "an error is expected...\n");
+                err = mtd->write_oob(mtd, mtd->size - mtd->writesize, &ops);
+                if (err) {
+                        printk(PRINT_PREF "error occurred as expected\n");
+                        err = 0;
+                } else {
+                        printk(PRINT_PREF "error: wrote past end of device\n");
+                        errcnt += 1;
+                }
+
+                /* Attempt to read off end of device */
+                ops.mode      = MTD_OOB_AUTO;
+                ops.len       = 0;
+                ops.retlen    = 0;
+                ops.ooblen    = mtd->ecclayout->oobavail + 1;
+                ops.oobretlen = 0;
+                ops.ooboffs   = 0;
+                ops.datbuf    = 0;
+                ops.oobbuf    = readbuf;
+                printk(PRINT_PREF "attempting to read past end of device\n");
+                printk(PRINT_PREF "an error is expected...\n");
+                err = mtd->read_oob(mtd, mtd->size - mtd->writesize, &ops);
+                if (err) {
+                        printk(PRINT_PREF "error occurred as expected\n");
+                        err = 0;
+                } else {
+                        printk(PRINT_PREF "error: read past end of device\n");
+                        errcnt += 1;
+                }
+
+                err = erase_eraseblock(ebcnt - 1);
+                if (err)
+                        goto out;
+
+                /* Attempt to write off end of device */
+                ops.mode      = MTD_OOB_AUTO;
+                ops.len       = 0;
+                ops.retlen    = 0;
+                ops.ooblen    = mtd->ecclayout->oobavail;
+                ops.oobretlen = 0;
+                ops.ooboffs   = 1;
+                ops.datbuf    = 0;
+                ops.oobbuf    = writebuf;
+                printk(PRINT_PREF "attempting to write past end of device\n");
+                printk(PRINT_PREF "an error is expected...\n");
+                err = mtd->write_oob(mtd, mtd->size - mtd->writesize, &ops);
+                if (err) {
+                        printk(PRINT_PREF "error occurred as expected\n");
+                        err = 0;
+                } else {
+                        printk(PRINT_PREF "error: wrote past end of device\n");
+                        errcnt += 1;
+                }
+
+                /* Attempt to read off end of device */
+                ops.mode      = MTD_OOB_AUTO;
+                ops.len       = 0;
+                ops.retlen    = 0;
+                ops.ooblen    = mtd->ecclayout->oobavail;
+                ops.oobretlen = 0;
+                ops.ooboffs   = 1;
+                ops.datbuf    = 0;
+                ops.oobbuf    = readbuf;
+                printk(PRINT_PREF "attempting to read past end of device\n");
+                printk(PRINT_PREF "an error is expected...\n");
+                err = mtd->read_oob(mtd, mtd->size - mtd->writesize, &ops);
+                if (err) {
+                        printk(PRINT_PREF "error occurred as expected\n");
+                        err = 0;
+                } else {
+                        printk(PRINT_PREF "error: read past end of device\n");
+                        errcnt += 1;
+                }
+        }
+
+        /* Fifth test: write / read across block boundaries */
+        printk(PRINT_PREF "test 5 of 5\n");
+
+        /* Erase all eraseblocks */
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        /* Write all eraseblocks */
+        simple_srand(11);
+        printk(PRINT_PREF "writing OOBs of whole device\n");
+        for (i = 0; i < ebcnt - 1; ++i) {
+                int cnt = 2;
+                int pg;
+                size_t sz = mtd->ecclayout->oobavail;
+                if (bbt[i] || bbt[i + 1])
+                        continue;
+                addr = (i + 1) * mtd->erasesize - mtd->writesize;
+                for (pg = 0; pg < cnt; ++pg) {
+                        set_random_data(writebuf, sz);
+                        ops.mode      = MTD_OOB_AUTO;
+                        ops.len       = 0;
+                        ops.retlen    = 0;
+                        ops.ooblen    = sz;
+                        ops.oobretlen = 0;
+                        ops.ooboffs   = 0;
+                        ops.datbuf    = 0;
+                        ops.oobbuf    = writebuf;
+                        err = mtd->write_oob(mtd, addr, &ops);
+                        if (err)
+                                goto out;
+                        if (i % 256 == 0)
+                                printk(PRINT_PREF "written up to eraseblock "
+                                       "%u\n", i);
+                        cond_resched();
+                        addr += mtd->writesize;
+                }
+        }
+        printk(PRINT_PREF "written %u eraseblocks\n", i);
+
+        /* Check all eraseblocks */
+        simple_srand(11);
+        printk(PRINT_PREF "verifying all eraseblocks\n");
+        for (i = 0; i < ebcnt - 1; ++i) {
+                if (bbt[i] || bbt[i + 1])
+                        continue;
+                set_random_data(writebuf, mtd->ecclayout->oobavail * 2);
+                addr = (i + 1) * mtd->erasesize - mtd->writesize;
+                ops.mode      = MTD_OOB_AUTO;
+                ops.len       = 0;
+                ops.retlen    = 0;
+                ops.ooblen    = mtd->ecclayout->oobavail * 2;
+                ops.oobretlen = 0;
+                ops.ooboffs   = 0;
+                ops.datbuf    = 0;
+                ops.oobbuf    = readbuf;
+                err = mtd->read_oob(mtd, addr, &ops);
+                if (err)
+                        goto out;
+                if (memcmp(readbuf, writebuf, mtd->ecclayout->oobavail * 2)) {
+                        printk(PRINT_PREF "error: verify failed at %#llx\n",
+                               (long long)addr);
+                        errcnt += 1;
+                        if (errcnt > 1000) {
+                                printk(PRINT_PREF "error: too many errors\n");
+                                goto out;
+                        }
+                }
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "verified up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "verified %u eraseblocks\n", i);
+
+        printk(PRINT_PREF "finished with %d errors\n", errcnt);
+out:
+        kfree(bbt);
+        kfree(writebuf);
+        kfree(readbuf);
+        put_mtd_device(mtd);
+        if (err)
+                printk(PRINT_PREF "error %d occurred\n", err);
+        printk(KERN_INFO "=================================================\n");
+        return err;
+}
+module_init(mtd_oobtest_init);
+
+static void __exit mtd_oobtest_exit(void)
+{
+        return;
+}
+module_exit(mtd_oobtest_exit);
+
+MODULE_DESCRIPTION("Out-of-band test module");
+MODULE_AUTHOR("Adrian Hunter");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/tests/mtd_pagetest.c b/drivers/mtd/tests/mtd_pagetest.c
new file mode 100644
index 00000000000..9648818b9e2
--- /dev/null
+++ b/drivers/mtd/tests/mtd_pagetest.c
@@ -0,0 +1,632 @@
+/*
+ * Copyright (C) 2006-2008 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING. If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Test page read and write on MTD device.
+ *
+ * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
+ */
+
+#include <asm/div64.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/mtd/mtd.h>
+#include <linux/sched.h>
+
+#define PRINT_PREF KERN_INFO "mtd_pagetest: "
+
+static int dev;
+module_param(dev, int, S_IRUGO);
+MODULE_PARM_DESC(dev, "MTD device number to use");
+
+static struct mtd_info *mtd;
+static unsigned char *twopages;
+static unsigned char *writebuf;
+static unsigned char *boundary;
+static unsigned char *bbt;
+
+static int pgsize;
+static int bufsize;
+static int ebcnt;
+static int pgcnt;
+static int errcnt;
+static unsigned long next = 1;
+
+static inline unsigned int simple_rand(void)
+{
+        next = next * 1103515245 + 12345;
+        return (unsigned int)((next / 65536) % 32768);
+}
+
+static inline void simple_srand(unsigned long seed)
+{
+        next = seed;
+}
+
+static void set_random_data(unsigned char *buf, size_t len)
+{
+        size_t i;
+
+        for (i = 0; i < len; ++i)
+                buf[i] = simple_rand();
+}
+
+static int erase_eraseblock(int ebnum)
+{
+        int err;
+        struct erase_info ei;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        memset(&ei, 0, sizeof(struct erase_info));
+        ei.mtd  = mtd;
+        ei.addr = addr;
+        ei.len  = mtd->erasesize;
+
+        err = mtd->erase(mtd, &ei);
+        if (err) {
+                printk(PRINT_PREF "error %d while erasing EB %d\n", err, ebnum);
+                return err;
+        }
+
+        if (ei.state == MTD_ERASE_FAILED) {
+                printk(PRINT_PREF "some erase error occurred at EB %d\n",
+                       ebnum);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+static int write_eraseblock(int ebnum)
+{
+        int err = 0;
+        size_t written = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        set_random_data(writebuf, mtd->erasesize);
+        cond_resched();
+        err = mtd->write(mtd, addr, mtd->erasesize, &written, writebuf);
+        if (err || written != mtd->erasesize)
+                printk(PRINT_PREF "error: write failed at %#llx\n",
+                       (long long)addr);
+
+        return err;
+}
+
+static int verify_eraseblock(int ebnum)
+{
+        uint32_t j;
+        size_t read = 0;
+        int err = 0, i;
+        loff_t addr0, addrn;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        addr0 = 0;
+        for (i = 0; bbt[i] && i < ebcnt; ++i)
+                addr0 += mtd->erasesize;
+
+        addrn = mtd->size;
+        for (i = 0; bbt[ebcnt - i - 1] && i < ebcnt; ++i)
+                addrn -= mtd->erasesize;
+
+        set_random_data(writebuf, mtd->erasesize);
+        for (j = 0; j < pgcnt - 1; ++j, addr += pgsize) {
+                /* Do a read to set the internal dataRAMs to different data */
+                err = mtd->read(mtd, addr0, bufsize, &read, twopages);
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != bufsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)addr0);
+                        return err;
+                }
+                err = mtd->read(mtd, addrn - bufsize, bufsize, &read, twopages);
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != bufsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)(addrn - bufsize));
+                        return err;
+                }
+                memset(twopages, 0, bufsize);
+                read = 0;
+                err = mtd->read(mtd, addr, bufsize, &read, twopages);
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != bufsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)addr);
+                        break;
+                }
+                if (memcmp(twopages, writebuf + (j * pgsize), bufsize)) {
+                        printk(PRINT_PREF "error: verify failed at %#llx\n",
+                               (long long)addr);
+                        errcnt += 1;
+                }
+        }
+        /* Check boundary between eraseblocks */
+        if (addr <= addrn - pgsize - pgsize && !bbt[ebnum + 1]) {
+                unsigned long oldnext = next;
+                /* Do a read to set the internal dataRAMs to different data */
+                err = mtd->read(mtd, addr0, bufsize, &read, twopages);
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != bufsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)addr0);
+                        return err;
+                }
+                err = mtd->read(mtd, addrn - bufsize, bufsize, &read, twopages);
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != bufsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)(addrn - bufsize));
+                        return err;
+                }
+                memset(twopages, 0, bufsize);
+                read = 0;
+                err = mtd->read(mtd, addr, bufsize, &read, twopages);
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != bufsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)addr);
+                        return err;
+                }
+                memcpy(boundary, writebuf + mtd->erasesize - pgsize, pgsize);
+                set_random_data(boundary + pgsize, pgsize);
+                if (memcmp(twopages, boundary, bufsize)) {
+                        printk(PRINT_PREF "error: verify failed at %#llx\n",
+                               (long long)addr);
+                        errcnt += 1;
+                }
+                next = oldnext;
+        }
+        return err;
+}
+
+static int crosstest(void)
+{
+        size_t read = 0;
+        int err = 0, i;
+        loff_t addr, addr0, addrn;
+        unsigned char *pp1, *pp2, *pp3, *pp4;
+
+        printk(PRINT_PREF "crosstest\n");
+        pp1 = kmalloc(pgsize * 4, GFP_KERNEL);
+        if (!pp1) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                return -ENOMEM;
+        }
+        pp2 = pp1 + pgsize;
+        pp3 = pp2 + pgsize;
+        pp4 = pp3 + pgsize;
+        memset(pp1, 0, pgsize * 4);
+
+        addr0 = 0;
+        for (i = 0; bbt[i] && i < ebcnt; ++i)
+                addr0 += mtd->erasesize;
+
+        addrn = mtd->size;
+        for (i = 0; bbt[ebcnt - i - 1] && i < ebcnt; ++i)
+                addrn -= mtd->erasesize;
+
+        /* Read 2nd-to-last page to pp1 */
+        read = 0;
+        addr = addrn - pgsize - pgsize;
+        err = mtd->read(mtd, addr, pgsize, &read, pp1);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != pgsize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n",
+                       (long long)addr);
+                kfree(pp1);
+                return err;
+        }
+
+        /* Read 3rd-to-last page to pp1 */
+        read = 0;
+        addr = addrn - pgsize - pgsize - pgsize;
+        err = mtd->read(mtd, addr, pgsize, &read, pp1);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != pgsize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n",
+                       (long long)addr);
+                kfree(pp1);
+                return err;
+        }
+
+        /* Read first page to pp2 */
+        read = 0;
+        addr = addr0;
+        printk(PRINT_PREF "reading page at %#llx\n", (long long)addr);
+        err = mtd->read(mtd, addr, pgsize, &read, pp2);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != pgsize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n",
+                       (long long)addr);
+                kfree(pp1);
+                return err;
+        }
+
+        /* Read last page to pp3 */
+        read = 0;
+        addr = addrn - pgsize;
+        printk(PRINT_PREF "reading page at %#llx\n", (long long)addr);
+        err = mtd->read(mtd, addr, pgsize, &read, pp3);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != pgsize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n",
+                       (long long)addr);
+                kfree(pp1);
+                return err;
+        }
+
+        /* Read first page again to pp4 */
+        read = 0;
+        addr = addr0;
+        printk(PRINT_PREF "reading page at %#llx\n", (long long)addr);
+        err = mtd->read(mtd, addr, pgsize, &read, pp4);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != pgsize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n",
+                       (long long)addr);
+                kfree(pp1);
+                return err;
+        }
+
+        /* pp2 and pp4 should be the same */
+        printk(PRINT_PREF "verifying pages read at %#llx match\n",
+               (long long)addr0);
+        if (memcmp(pp2, pp4, pgsize)) {
+                printk(PRINT_PREF "verify failed!\n");
+                errcnt += 1;
+        } else if (!err)
+                printk(PRINT_PREF "crosstest ok\n");
+        kfree(pp1);
+        return err;
+}
+
+static int erasecrosstest(void)
+{
+        size_t read = 0, written = 0;
+        int err = 0, i, ebnum, ok = 1, ebnum2;
+        loff_t addr0;
+        char *readbuf = twopages;
+
+        printk(PRINT_PREF "erasecrosstest\n");
+
+        ebnum = 0;
+        addr0 = 0;
+        for (i = 0; bbt[i] && i < ebcnt; ++i) {
+                addr0 += mtd->erasesize;
+                ebnum += 1;
+        }
+
+        ebnum2 = ebcnt - 1;
+        while (ebnum2 && bbt[ebnum2])
+                ebnum2 -= 1;
+
+        printk(PRINT_PREF "erasing block %d\n", ebnum);
+        err = erase_eraseblock(ebnum);
+        if (err)
+                return err;
+
+        printk(PRINT_PREF "writing 1st page of block %d\n", ebnum);
+        set_random_data(writebuf, pgsize);
+        strcpy(writebuf, "There is no data like this!");
+        err = mtd->write(mtd, addr0, pgsize, &written, writebuf);
+        if (err || written != pgsize) {
+                printk(PRINT_PREF "error: write failed at %#llx\n",
+                       (long long)addr0);
+                return err ? err : -1;
+        }
+
+        printk(PRINT_PREF "reading 1st page of block %d\n", ebnum);
+        memset(readbuf, 0, pgsize);
+        err = mtd->read(mtd, addr0, pgsize, &read, readbuf);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != pgsize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n",
+                       (long long)addr0);
+                return err ? err : -1;
+        }
+
+        printk(PRINT_PREF "verifying 1st page of block %d\n", ebnum);
+        if (memcmp(writebuf, readbuf, pgsize)) {
+                printk(PRINT_PREF "verify failed!\n");
+                errcnt += 1;
+                ok = 0;
+                return err;
+        }
+
+        printk(PRINT_PREF "erasing block %d\n", ebnum);
+        err = erase_eraseblock(ebnum);
+        if (err)
+                return err;
+
+        printk(PRINT_PREF "writing 1st page of block %d\n", ebnum);
+        set_random_data(writebuf, pgsize);
+        strcpy(writebuf, "There is no data like this!");
+        err = mtd->write(mtd, addr0, pgsize, &written, writebuf);
+        if (err || written != pgsize) {
+                printk(PRINT_PREF "error: write failed at %#llx\n",
+                       (long long)addr0);
+                return err ? err : -1;
+        }
+
+        printk(PRINT_PREF "erasing block %d\n", ebnum2);
+        err = erase_eraseblock(ebnum2);
+        if (err)
+                return err;
+
+        printk(PRINT_PREF "reading 1st page of block %d\n", ebnum);
+        memset(readbuf, 0, pgsize);
+        err = mtd->read(mtd, addr0, pgsize, &read, readbuf);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != pgsize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n",
+                       (long long)addr0);
+                return err ? err : -1;
+        }
+
+        printk(PRINT_PREF "verifying 1st page of block %d\n", ebnum);
+        if (memcmp(writebuf, readbuf, pgsize)) {
+                printk(PRINT_PREF "verify failed!\n");
+                errcnt += 1;
+                ok = 0;
+        }
+
+        if (ok && !err)
+                printk(PRINT_PREF "erasecrosstest ok\n");
+        return err;
+}
+
+static int erasetest(void)
+{
+        size_t read = 0, written = 0;
+        int err = 0, i, ebnum, ok = 1;
+        loff_t addr0;
+
+        printk(PRINT_PREF "erasetest\n");
+
+        ebnum = 0;
+        addr0 = 0;
+        for (i = 0; bbt[i] && i < ebcnt; ++i) {
+                addr0 += mtd->erasesize;
+                ebnum += 1;
+        }
+
+        printk(PRINT_PREF "erasing block %d\n", ebnum);
+        err = erase_eraseblock(ebnum);
+        if (err)
+                return err;
+
+        printk(PRINT_PREF "writing 1st page of block %d\n", ebnum);
+        set_random_data(writebuf, pgsize);
+        err = mtd->write(mtd, addr0, pgsize, &written, writebuf);
+        if (err || written != pgsize) {
+                printk(PRINT_PREF "error: write failed at %#llx\n",
+                       (long long)addr0);
+                return err ? err : -1;
+        }
+
+        printk(PRINT_PREF "erasing block %d\n", ebnum);
+        err = erase_eraseblock(ebnum);
+        if (err)
+                return err;
+
+        printk(PRINT_PREF "reading 1st page of block %d\n", ebnum);
+        err = mtd->read(mtd, addr0, pgsize, &read, twopages);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != pgsize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n",
+                       (long long)addr0);
+                return err ? err : -1;
+        }
+
+        printk(PRINT_PREF "verifying 1st page of block %d is all 0xff\n",
+               ebnum);
+        for (i = 0; i < pgsize; ++i)
+                if (twopages[i] != 0xff) {
+                        printk(PRINT_PREF "verifying all 0xff failed at %d\n",
+                               i);
+                        errcnt += 1;
+                        ok = 0;
+                        break;
+                }
+
+        if (ok && !err)
+                printk(PRINT_PREF "erasetest ok\n");
+
+        return err;
+}
+
+static int is_block_bad(int ebnum)
+{
+        loff_t addr = ebnum * mtd->erasesize;
+        int ret;
+
+        ret = mtd->block_isbad(mtd, addr);
+        if (ret)
+                printk(PRINT_PREF "block %d is bad\n", ebnum);
+        return ret;
+}
+
+static int scan_for_bad_eraseblocks(void)
+{
+        int i, bad = 0;
+
+        bbt = kmalloc(ebcnt, GFP_KERNEL);
+        if (!bbt) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                return -ENOMEM;
+        }
+        memset(bbt, 0 , ebcnt);
+
+        printk(PRINT_PREF "scanning for bad eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                bbt[i] = is_block_bad(i) ? 1 : 0;
+                if (bbt[i])
+                        bad += 1;
+                cond_resched();
+        }
+        printk(PRINT_PREF "scanned %d eraseblocks, %d are bad\n", i, bad);
+        return 0;
+}
+
+static int __init mtd_pagetest_init(void)
+{
+        int err = 0;
+        uint64_t tmp;
+        uint32_t i;
+
+        printk(KERN_INFO "\n");
+        printk(KERN_INFO "=================================================\n");
+        printk(PRINT_PREF "MTD device: %d\n", dev);
+
+        mtd = get_mtd_device(NULL, dev);
+        if (IS_ERR(mtd)) {
+                err = PTR_ERR(mtd);
+                printk(PRINT_PREF "error: cannot get MTD device\n");
+                return err;
+        }
+
+        if (mtd->type != MTD_NANDFLASH) {
+                printk(PRINT_PREF "this test requires NAND flash\n");
+                goto out;
+        }
+
+        tmp = mtd->size;
+        do_div(tmp, mtd->erasesize);
+        ebcnt = tmp;
+        pgcnt = mtd->erasesize / mtd->writesize;
+
+        printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
+               "page size %u, count of eraseblocks %u, pages per "
+               "eraseblock %u, OOB size %u\n",
+               (unsigned long long)mtd->size, mtd->erasesize,
+               pgsize, ebcnt, pgcnt, mtd->oobsize);
+
+        err = -ENOMEM;
+        bufsize = pgsize * 2;
+        writebuf = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!writebuf) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+        twopages = kmalloc(bufsize, GFP_KERNEL);
+        if (!twopages) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+        boundary = kmalloc(bufsize, GFP_KERNEL);
+        if (!boundary) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+
+        err = scan_for_bad_eraseblocks();
+        if (err)
+                goto out;
+
+        /* Erase all eraseblocks */
+        printk(PRINT_PREF "erasing whole device\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = erase_eraseblock(i);
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        printk(PRINT_PREF "erased %u eraseblocks\n", i);
+
+        /* Write all eraseblocks */
+        simple_srand(1);
+        printk(PRINT_PREF "writing whole device\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = write_eraseblock(i);
+                if (err)
+                        goto out;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "written up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "written %u eraseblocks\n", i);
+
+        /* Check all eraseblocks */
+        simple_srand(1);
+        printk(PRINT_PREF "verifying all eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = verify_eraseblock(i);
+                if (err)
+                        goto out;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "verified up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "verified %u eraseblocks\n", i);
+
+        err = crosstest();
+        if (err)
+                goto out;
+
+        err = erasecrosstest();
+        if (err)
+                goto out;
+
+        err = erasetest();
+        if (err)
+                goto out;
+
+        printk(PRINT_PREF "finished with %d errors\n", errcnt);
+out:
+
+        kfree(bbt);
+        kfree(boundary);
+        kfree(twopages);
+        kfree(writebuf);
+        put_mtd_device(mtd);
+        if (err)
+                printk(PRINT_PREF "error %d occurred\n", err);
+        printk(KERN_INFO "=================================================\n");
+        return err;
+}
+module_init(mtd_pagetest_init);
+
+static void __exit mtd_pagetest_exit(void)
+{
+        return;
+}
+module_exit(mtd_pagetest_exit);
+
+MODULE_DESCRIPTION("NAND page test");
+MODULE_AUTHOR("Adrian Hunter");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/tests/mtd_readtest.c b/drivers/mtd/tests/mtd_readtest.c
new file mode 100644
index 00000000000..645e77fdc63
--- /dev/null
+++ b/drivers/mtd/tests/mtd_readtest.c
@@ -0,0 +1,253 @@
+/*
+ * Copyright (C) 2006-2008 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING. If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Check MTD device read.
+ *
+ * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/mtd/mtd.h>
+#include <linux/sched.h>
+
+#define PRINT_PREF KERN_INFO "mtd_readtest: "
+
+static int dev;
+module_param(dev, int, S_IRUGO);
+MODULE_PARM_DESC(dev, "MTD device number to use");
+
+static struct mtd_info *mtd;
+static unsigned char *iobuf;
+static unsigned char *iobuf1;
+static unsigned char *bbt;
+
+static int pgsize;
+static int ebcnt;
+static int pgcnt;
+
+static int read_eraseblock_by_page(int ebnum)
+{
+        size_t read = 0;
+        int i, ret, err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+        void *buf = iobuf;
+        void *oobbuf = iobuf1;
+
+        for (i = 0; i < pgcnt; i++) {
+                memset(buf, 0 , pgcnt);
+                ret = mtd->read(mtd, addr, pgsize, &read, buf);
+                if (ret == -EUCLEAN)
+                        ret = 0;
+                if (ret || read != pgsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)addr);
+                        if (!err)
+                                err = ret;
+                        if (!err)
+                                err = -EINVAL;
+                }
+                if (mtd->oobsize) {
+                        struct mtd_oob_ops ops;
+
+                        ops.mode      = MTD_OOB_PLACE;
+                        ops.len       = 0;
+                        ops.retlen    = 0;
+                        ops.ooblen    = mtd->oobsize;
+                        ops.oobretlen = 0;
+                        ops.ooboffs   = 0;
+                        ops.datbuf    = 0;
+                        ops.oobbuf    = oobbuf;
+                        ret = mtd->read_oob(mtd, addr, &ops);
+                        if (ret || ops.oobretlen != mtd->oobsize) {
+                                printk(PRINT_PREF "error: read oob failed at "
+                                                  "%#llx\n", (long long)addr);
+                                if (!err)
+                                        err = ret;
+                                if (!err)
+                                        err = -EINVAL;
+                        }
+                        oobbuf += mtd->oobsize;
+                }
+                addr += pgsize;
+                buf += pgsize;
+        }
+
+        return err;
+}
+
+static void dump_eraseblock(int ebnum)
+{
+        int i, j, n;
+        char line[128];
+        int pg, oob;
+
+        printk(PRINT_PREF "dumping eraseblock %d\n", ebnum);
+        n = mtd->erasesize;
+        for (i = 0; i < n;) {
+                char *p = line;
+
+                p += sprintf(p, "%05x: ", i);
+                for (j = 0; j < 32 && i < n; j++, i++)
+                        p += sprintf(p, "%02x", (unsigned int)iobuf[i]);
+                printk(KERN_CRIT "%s\n", line);
+                cond_resched();
+        }
+        if (!mtd->oobsize)
+                return;
+        printk(PRINT_PREF "dumping oob from eraseblock %d\n", ebnum);
+        n = mtd->oobsize;
+        for (pg = 0, i = 0; pg < pgcnt; pg++)
+                for (oob = 0; oob < n;) {
+                        char *p = line;
+
+                        p += sprintf(p, "%05x: ", i);
+                        for (j = 0; j < 32 && oob < n; j++, oob++, i++)
+                                p += sprintf(p, "%02x",
+                                             (unsigned int)iobuf1[i]);
+                        printk(KERN_CRIT "%s\n", line);
+                        cond_resched();
+                }
+}
+
+static int is_block_bad(int ebnum)
+{
+        loff_t addr = ebnum * mtd->erasesize;
+        int ret;
+
+        ret = mtd->block_isbad(mtd, addr);
+        if (ret)
+                printk(PRINT_PREF "block %d is bad\n", ebnum);
+        return ret;
+}
+
+static int scan_for_bad_eraseblocks(void)
+{
+        int i, bad = 0;
+
+        bbt = kmalloc(ebcnt, GFP_KERNEL);
+        if (!bbt) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                return -ENOMEM;
+        }
+        memset(bbt, 0 , ebcnt);
+
+        printk(PRINT_PREF "scanning for bad eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                bbt[i] = is_block_bad(i) ? 1 : 0;
+                if (bbt[i])
+                        bad += 1;
+                cond_resched();
+        }
+        printk(PRINT_PREF "scanned %d eraseblocks, %d are bad\n", i, bad);
+        return 0;
+}
+
+static int __init mtd_readtest_init(void)
+{
+        uint64_t tmp;
+        int err, i;
+
+        printk(KERN_INFO "\n");
+        printk(KERN_INFO "=================================================\n");
+        printk(PRINT_PREF "MTD device: %d\n", dev);
+
+        mtd = get_mtd_device(NULL, dev);
+        if (IS_ERR(mtd)) {
+                err = PTR_ERR(mtd);
+                printk(PRINT_PREF "error: Cannot get MTD device\n");
+                return err;
+        }
+
+        if (mtd->writesize == 1) {
+                printk(PRINT_PREF "not NAND flash, assume page size is 512 "
+                       "bytes.\n");
+                pgsize = 512;
+        } else
+                pgsize = mtd->writesize;
+
+        tmp = mtd->size;
+        do_div(tmp, mtd->erasesize);
+        ebcnt = tmp;
+        pgcnt = mtd->erasesize / mtd->writesize;
+
+        printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
+               "page size %u, count of eraseblocks %u, pages per "
+               "eraseblock %u, OOB size %u\n",
+               (unsigned long long)mtd->size, mtd->erasesize,
+               pgsize, ebcnt, pgcnt, mtd->oobsize);
+
+        err = -ENOMEM;
+        iobuf = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!iobuf) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+        iobuf1 = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!iobuf1) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+
+        err = scan_for_bad_eraseblocks();
+        if (err)
+                goto out;
+
+        /* Read all eraseblocks 1 page at a time */
+        printk(PRINT_PREF "testing page read\n");
+        for (i = 0; i < ebcnt; ++i) {
+                int ret;
+
+                if (bbt[i])
+                        continue;
+                ret = read_eraseblock_by_page(i);
+                if (ret) {
+                        dump_eraseblock(i);
+                        if (!err)
+                                err = ret;
+                }
+                cond_resched();
+        }
+
+        if (err)
+                printk(PRINT_PREF "finished with errors\n");
+        else
+                printk(PRINT_PREF "finished\n");
+
+out:
+
+        kfree(iobuf);
+        kfree(iobuf1);
+        kfree(bbt);
+        put_mtd_device(mtd);
+        if (err)
+                printk(PRINT_PREF "error %d occurred\n", err);
+        printk(KERN_INFO "=================================================\n");
+        return err;
+}
+module_init(mtd_readtest_init);
+
+static void __exit mtd_readtest_exit(void)
+{
+        return;
+}
+module_exit(mtd_readtest_exit);
+
+MODULE_DESCRIPTION("Read test module");
+MODULE_AUTHOR("Adrian Hunter");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/tests/mtd_speedtest.c b/drivers/mtd/tests/mtd_speedtest.c
new file mode 100644
index 00000000000..141363a7e80
--- /dev/null
+++ b/drivers/mtd/tests/mtd_speedtest.c
@@ -0,0 +1,502 @@
+/*
+ * Copyright (C) 2007 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING. If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Test read and write speed of a MTD device.
+ *
+ * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/mtd/mtd.h>
+#include <linux/sched.h>
+
+#define PRINT_PREF KERN_INFO "mtd_speedtest: "
+
+static int dev;
+module_param(dev, int, S_IRUGO);
+MODULE_PARM_DESC(dev, "MTD device number to use");
+
+static struct mtd_info *mtd;
+static unsigned char *iobuf;
+static unsigned char *bbt;
+
+static int pgsize;
+static int ebcnt;
+static int pgcnt;
+static int goodebcnt;
+static struct timeval start, finish;
+static unsigned long next = 1;
+
+static inline unsigned int simple_rand(void)
+{
+        next = next * 1103515245 + 12345;
+        return (unsigned int)((next / 65536) % 32768);
+}
+
+static inline void simple_srand(unsigned long seed)
+{
+        next = seed;
+}
+
+static void set_random_data(unsigned char *buf, size_t len)
+{
+        size_t i;
+
+        for (i = 0; i < len; ++i)
+                buf[i] = simple_rand();
+}
+
+static int erase_eraseblock(int ebnum)
+{
+        int err;
+        struct erase_info ei;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        memset(&ei, 0, sizeof(struct erase_info));
+        ei.mtd  = mtd;
+        ei.addr = addr;
+        ei.len  = mtd->erasesize;
+
+        err = mtd->erase(mtd, &ei);
+        if (err) {
+                printk(PRINT_PREF "error %d while erasing EB %d\n", err, ebnum);
+                return err;
+        }
+
+        if (ei.state == MTD_ERASE_FAILED) {
+                printk(PRINT_PREF "some erase error occurred at EB %d\n",
+                       ebnum);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+static int erase_whole_device(void)
+{
+        int err;
+        unsigned int i;
+
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = erase_eraseblock(i);
+                if (err)
+                        return err;
+                cond_resched();
+        }
+        return 0;
+}
+
+static int write_eraseblock(int ebnum)
+{
+        size_t written = 0;
+        int err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        err = mtd->write(mtd, addr, mtd->erasesize, &written, iobuf);
+        if (err || written != mtd->erasesize) {
+                printk(PRINT_PREF "error: write failed at %#llx\n", addr);
+                if (!err)
+                        err = -EINVAL;
+        }
+
+        return err;
+}
+
+static int write_eraseblock_by_page(int ebnum)
+{
+        size_t written = 0;
+        int i, err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+        void *buf = iobuf;
+
+        for (i = 0; i < pgcnt; i++) {
+                err = mtd->write(mtd, addr, pgsize, &written, buf);
+                if (err || written != pgsize) {
+                        printk(PRINT_PREF "error: write failed at %#llx\n",
+                               addr);
+                        if (!err)
+                                err = -EINVAL;
+                        break;
+                }
+                addr += pgsize;
+                buf += pgsize;
+        }
+
+        return err;
+}
+
+static int write_eraseblock_by_2pages(int ebnum)
+{
+        size_t written = 0, sz = pgsize * 2;
+        int i, n = pgcnt / 2, err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+        void *buf = iobuf;
+
+        for (i = 0; i < n; i++) {
+                err = mtd->write(mtd, addr, sz, &written, buf);
+                if (err || written != sz) {
+                        printk(PRINT_PREF "error: write failed at %#llx\n",
+                               addr);
+                        if (!err)
+                                err = -EINVAL;
+                        return err;
+                }
+                addr += sz;
+                buf += sz;
+        }
+        if (pgcnt % 2) {
+                err = mtd->write(mtd, addr, pgsize, &written, buf);
+                if (err || written != pgsize) {
+                        printk(PRINT_PREF "error: write failed at %#llx\n",
+                               addr);
+                        if (!err)
+                                err = -EINVAL;
+                }
+        }
+
+        return err;
+}
+
+static int read_eraseblock(int ebnum)
+{
+        size_t read = 0;
+        int err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        err = mtd->read(mtd, addr, mtd->erasesize, &read, iobuf);
+        /* Ignore corrected ECC errors */
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != mtd->erasesize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n", addr);
+                if (!err)
+                        err = -EINVAL;
+        }
+
+        return err;
+}
+
+static int read_eraseblock_by_page(int ebnum)
+{
+        size_t read = 0;
+        int i, err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+        void *buf = iobuf;
+
+        for (i = 0; i < pgcnt; i++) {
+                err = mtd->read(mtd, addr, pgsize, &read, buf);
+                /* Ignore corrected ECC errors */
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != pgsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               addr);
+                        if (!err)
+                                err = -EINVAL;
+                        break;
+                }
+                addr += pgsize;
+                buf += pgsize;
+        }
+
+        return err;
+}
+
+static int read_eraseblock_by_2pages(int ebnum)
+{
+        size_t read = 0, sz = pgsize * 2;
+        int i, n = pgcnt / 2, err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+        void *buf = iobuf;
+
+        for (i = 0; i < n; i++) {
+                err = mtd->read(mtd, addr, sz, &read, buf);
+                /* Ignore corrected ECC errors */
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != sz) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               addr);
+                        if (!err)
+                                err = -EINVAL;
+                        return err;
+                }
+                addr += sz;
+                buf += sz;
+        }
+        if (pgcnt % 2) {
+                err = mtd->read(mtd, addr, pgsize, &read, buf);
+                /* Ignore corrected ECC errors */
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != pgsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               addr);
+                        if (!err)
+                                err = -EINVAL;
+                }
+        }
+
+        return err;
+}
+
+static int is_block_bad(int ebnum)
+{
+        loff_t addr = ebnum * mtd->erasesize;
+        int ret;
+
+        ret = mtd->block_isbad(mtd, addr);
+        if (ret)
+                printk(PRINT_PREF "block %d is bad\n", ebnum);
+        return ret;
+}
+
+static inline void start_timing(void)
+{
+        do_gettimeofday(&start);
+}
+
+static inline void stop_timing(void)
+{
+        do_gettimeofday(&finish);
+}
+
+static long calc_speed(void)
+{
+        long ms, k, speed;
+
+        ms = (finish.tv_sec - start.tv_sec) * 1000 +
+             (finish.tv_usec - start.tv_usec) / 1000;
+        k = goodebcnt * mtd->erasesize / 1024;
+        speed = (k * 1000) / ms;
+        return speed;
+}
+
+static int scan_for_bad_eraseblocks(void)
+{
+        int i, bad = 0;
+
+        bbt = kmalloc(ebcnt, GFP_KERNEL);
+        if (!bbt) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                return -ENOMEM;
+        }
+        memset(bbt, 0 , ebcnt);
+
+        printk(PRINT_PREF "scanning for bad eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                bbt[i] = is_block_bad(i) ? 1 : 0;
+                if (bbt[i])
+                        bad += 1;
+                cond_resched();
+        }
+        printk(PRINT_PREF "scanned %d eraseblocks, %d are bad\n", i, bad);
+        goodebcnt = ebcnt - bad;
+        return 0;
+}
+
+static int __init mtd_speedtest_init(void)
+{
+        int err, i;
+        long speed;
+        uint64_t tmp;
+
+        printk(KERN_INFO "\n");
+        printk(KERN_INFO "=================================================\n");
+        printk(PRINT_PREF "MTD device: %d\n", dev);
+
+        mtd = get_mtd_device(NULL, dev);
+        if (IS_ERR(mtd)) {
+                err = PTR_ERR(mtd);
+                printk(PRINT_PREF "error: cannot get MTD device\n");
+                return err;
+        }
+
+        if (mtd->writesize == 1) {
+                printk(PRINT_PREF "not NAND flash, assume page size is 512 "
+                       "bytes.\n");
+                pgsize = 512;
+        } else
+                pgsize = mtd->writesize;
+
+        tmp = mtd->size;
+        do_div(tmp, mtd->erasesize);
+        ebcnt = tmp;
+        pgcnt = mtd->erasesize / mtd->writesize;
+
+        printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
+               "page size %u, count of eraseblocks %u, pages per "
+               "eraseblock %u, OOB size %u\n",
+               (unsigned long long)mtd->size, mtd->erasesize,
+               pgsize, ebcnt, pgcnt, mtd->oobsize);
+
+        err = -ENOMEM;
+        iobuf = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!iobuf) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+
+        simple_srand(1);
+        set_random_data(iobuf, mtd->erasesize);
+
+        err = scan_for_bad_eraseblocks();
+        if (err)
+                goto out;
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        /* Write all eraseblocks, 1 eraseblock at a time */
+        printk(PRINT_PREF "testing eraseblock write speed\n");
+        start_timing();
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = write_eraseblock(i);
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        stop_timing();
+        speed = calc_speed();
+        printk(PRINT_PREF "eraseblock write speed is %ld KiB/s\n", speed);
+
+        /* Read all eraseblocks, 1 eraseblock at a time */
+        printk(PRINT_PREF "testing eraseblock read speed\n");
+        start_timing();
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = read_eraseblock(i);
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        stop_timing();
+        speed = calc_speed();
+        printk(PRINT_PREF "eraseblock read speed is %ld KiB/s\n", speed);
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        /* Write all eraseblocks, 1 page at a time */
+        printk(PRINT_PREF "testing page write speed\n");
+        start_timing();
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = write_eraseblock_by_page(i);
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        stop_timing();
+        speed = calc_speed();
+        printk(PRINT_PREF "page write speed is %ld KiB/s\n", speed);
+
+        /* Read all eraseblocks, 1 page at a time */
+        printk(PRINT_PREF "testing page read speed\n");
+        start_timing();
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = read_eraseblock_by_page(i);
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        stop_timing();
+        speed = calc_speed();
+        printk(PRINT_PREF "page read speed is %ld KiB/s\n", speed);
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        /* Write all eraseblocks, 2 pages at a time */
+        printk(PRINT_PREF "testing 2 page write speed\n");
+        start_timing();
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = write_eraseblock_by_2pages(i);
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        stop_timing();
+        speed = calc_speed();
+        printk(PRINT_PREF "2 page write speed is %ld KiB/s\n", speed);
+
+        /* Read all eraseblocks, 2 pages at a time */
+        printk(PRINT_PREF "testing 2 page read speed\n");
+        start_timing();
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = read_eraseblock_by_2pages(i);
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        stop_timing();
+        speed = calc_speed();
+        printk(PRINT_PREF "2 page read speed is %ld KiB/s\n", speed);
+
+        /* Erase all eraseblocks */
+        printk(PRINT_PREF "Testing erase speed\n");
+        start_timing();
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = erase_eraseblock(i);
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        stop_timing();
+        speed = calc_speed();
+        printk(PRINT_PREF "erase speed is %ld KiB/s\n", speed);
+
+        printk(PRINT_PREF "finished\n");
+out:
+        kfree(iobuf);
+        kfree(bbt);
+        put_mtd_device(mtd);
+        if (err)
+                printk(PRINT_PREF "error %d occurred\n", err);
+        printk(KERN_INFO "=================================================\n");
+        return err;
+}
+module_init(mtd_speedtest_init);
+
+static void __exit mtd_speedtest_exit(void)
+{
+        return;
+}
+module_exit(mtd_speedtest_exit);
+
+MODULE_DESCRIPTION("Speed test module");
+MODULE_AUTHOR("Adrian Hunter");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/tests/mtd_stresstest.c b/drivers/mtd/tests/mtd_stresstest.c
new file mode 100644
index 00000000000..63920476b57
--- /dev/null
+++ b/drivers/mtd/tests/mtd_stresstest.c
@@ -0,0 +1,330 @@
+/*
+ * Copyright (C) 2006-2008 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING. If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Test random reads, writes and erases on MTD device.
+ *
+ * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/mtd/mtd.h>
+#include <linux/sched.h>
+#include <linux/vmalloc.h>
+
+#define PRINT_PREF KERN_INFO "mtd_stresstest: "
+
+static int dev;
+module_param(dev, int, S_IRUGO);
+MODULE_PARM_DESC(dev, "MTD device number to use");
+
+static int count = 10000;
+module_param(count, int, S_IRUGO);
+MODULE_PARM_DESC(count, "Number of operations to do (default is 10000)");
+
+static struct mtd_info *mtd;
+static unsigned char *writebuf;
+static unsigned char *readbuf;
+static unsigned char *bbt;
+static int *offsets;
+
+static int pgsize;
+static int bufsize;
+static int ebcnt;
+static int pgcnt;
+static unsigned long next = 1;
+
+static inline unsigned int simple_rand(void)
+{
+        next = next * 1103515245 + 12345;
+        return (unsigned int)((next / 65536) % 32768);
+}
+
+static inline void simple_srand(unsigned long seed)
+{
+        next = seed;
+}
+
+static int rand_eb(void)
+{
+        int eb;
+
+again:
+        if (ebcnt < 32768)
+                eb = simple_rand();
+        else
+                eb = (simple_rand() << 15) | simple_rand();
+        /* Read or write up 2 eraseblocks at a time - hence 'ebcnt - 1' */
+        eb %= (ebcnt - 1);
+        if (bbt[eb])
+                goto again;
+        return eb;
+}
+
+static int rand_offs(void)
+{
+        int offs;
+
+        if (bufsize < 32768)
+                offs = simple_rand();
+        else
+                offs = (simple_rand() << 15) | simple_rand();
+        offs %= bufsize;
+        return offs;
+}
+
+static int rand_len(int offs)
+{
+        int len;
+
+        if (bufsize < 32768)
+                len = simple_rand();
+        else
+                len = (simple_rand() << 15) | simple_rand();
+        len %= (bufsize - offs);
+        return len;
+}
+
+static int erase_eraseblock(int ebnum)
+{
+        int err;
+        struct erase_info ei;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        memset(&ei, 0, sizeof(struct erase_info));
+        ei.mtd  = mtd;
+        ei.addr = addr;
+        ei.len  = mtd->erasesize;
+
+        err = mtd->erase(mtd, &ei);
+        if (unlikely(err)) {
+                printk(PRINT_PREF "error %d while erasing EB %d\n", err, ebnum);
+                return err;
+        }
+
+        if (unlikely(ei.state == MTD_ERASE_FAILED)) {
+                printk(PRINT_PREF "some erase error occurred at EB %d\n",
+                       ebnum);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+static int is_block_bad(int ebnum)
+{
+        loff_t addr = ebnum * mtd->erasesize;
+        int ret;
+
+        ret = mtd->block_isbad(mtd, addr);
+        if (ret)
+                printk(PRINT_PREF "block %d is bad\n", ebnum);
+        return ret;
+}
+
+static int do_read(void)
+{
+        size_t read = 0;
+        int eb = rand_eb();
+        int offs = rand_offs();
+        int len = rand_len(offs), err;
+        loff_t addr;
+
+        if (bbt[eb + 1]) {
+                if (offs >= mtd->erasesize)
+                        offs -= mtd->erasesize;
+                if (offs + len > mtd->erasesize)
+                        len = mtd->erasesize - offs;
+        }
+        addr = eb * mtd->erasesize + offs;
+        err = mtd->read(mtd, addr, len, &read, readbuf);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (unlikely(err || read != len)) {
+                printk(PRINT_PREF "error: read failed at 0x%llx\n",
+                       (long long)addr);
+                if (!err)
+                        err = -EINVAL;
+                return err;
+        }
+        return 0;
+}
+
+static int do_write(void)
+{
+        int eb = rand_eb(), offs, err, len;
+        size_t written = 0;
+        loff_t addr;
+
+        offs = offsets[eb];
+        if (offs >= mtd->erasesize) {
+                err = erase_eraseblock(eb);
+                if (err)
+                        return err;
+                offs = offsets[eb] = 0;
+        }
+        len = rand_len(offs);
+        len = ((len + pgsize - 1) / pgsize) * pgsize;
+        if (offs + len > mtd->erasesize) {
+                if (bbt[eb + 1])
+                        len = mtd->erasesize - offs;
+                else {
+                        err = erase_eraseblock(eb + 1);
+                        if (err)
+                                return err;
+                        offsets[eb + 1] = 0;
+                }
+        }
+        addr = eb * mtd->erasesize + offs;
+        err = mtd->write(mtd, addr, len, &written, writebuf);
+        if (unlikely(err || written != len)) {
+                printk(PRINT_PREF "error: write failed at 0x%llx\n",
+                       (long long)addr);
+                if (!err)
+                        err = -EINVAL;
+                return err;
+        }
+        offs += len;
+        while (offs > mtd->erasesize) {
+                offsets[eb++] = mtd->erasesize;
+                offs -= mtd->erasesize;
+        }
+        offsets[eb] = offs;
+        return 0;
+}
+
+static int do_operation(void)
+{
+        if (simple_rand() & 1)
+                return do_read();
+        else
+                return do_write();
+}
+
+static int scan_for_bad_eraseblocks(void)
+{
+        int i, bad = 0;
+
+        bbt = kmalloc(ebcnt, GFP_KERNEL);
+        if (!bbt) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                return -ENOMEM;
+        }
+        memset(bbt, 0 , ebcnt);
+
+        printk(PRINT_PREF "scanning for bad eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                bbt[i] = is_block_bad(i) ? 1 : 0;
+                if (bbt[i])
+                        bad += 1;
+                cond_resched();
+        }
+        printk(PRINT_PREF "scanned %d eraseblocks, %d are bad\n", i, bad);
+        return 0;
+}
+
+static int __init mtd_stresstest_init(void)
+{
+        int err;
+        int i, op;
+        uint64_t tmp;
+
+        printk(KERN_INFO "\n");
+        printk(KERN_INFO "=================================================\n");
+        printk(PRINT_PREF "MTD device: %d\n", dev);
+
+        mtd = get_mtd_device(NULL, dev);
+        if (IS_ERR(mtd)) {
+                err = PTR_ERR(mtd);
+                printk(PRINT_PREF "error: cannot get MTD device\n");
+                return err;
+        }
+
+        if (mtd->writesize == 1) {
+                printk(PRINT_PREF "not NAND flash, assume page size is 512 "
+                       "bytes.\n");
+                pgsize = 512;
+        } else
+                pgsize = mtd->writesize;
+
+        tmp = mtd->size;
+        do_div(tmp, mtd->erasesize);
+        ebcnt = tmp;
+        pgcnt = mtd->erasesize / mtd->writesize;
+
+        printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
+               "page size %u, count of eraseblocks %u, pages per "
+               "eraseblock %u, OOB size %u\n",
+               (unsigned long long)mtd->size, mtd->erasesize,
+               pgsize, ebcnt, pgcnt, mtd->oobsize);
+
+        /* Read or write up 2 eraseblocks at a time */
+        bufsize = mtd->erasesize * 2;
+
+        err = -ENOMEM;
+        readbuf = vmalloc(bufsize);
+        writebuf = vmalloc(bufsize);
+        offsets = kmalloc(ebcnt * sizeof(int), GFP_KERNEL);
+        if (!readbuf || !writebuf || !offsets) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+        for (i = 0; i < ebcnt; i++)
+                offsets[i] = mtd->erasesize;
+        simple_srand(current->pid);
+        for (i = 0; i < bufsize; i++)
+                writebuf[i] = simple_rand();
+
+        err = scan_for_bad_eraseblocks();
+        if (err)
+                goto out;
+
+        /* Do operations */
+        printk(PRINT_PREF "doing operations\n");
+        for (op = 0; op < count; op++) {
+                if ((op & 1023) == 0)
+                        printk(PRINT_PREF "%d operations done\n", op);
+                err = do_operation();
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        printk(PRINT_PREF "finished, %d operations done\n", op);
+
+out:
+        kfree(offsets);
+        kfree(bbt);
+        vfree(writebuf);
+        vfree(readbuf);
+        put_mtd_device(mtd);
+        if (err)
+                printk(PRINT_PREF "error %d occurred\n", err);
+        printk(KERN_INFO "=================================================\n");
+        return err;
+}
+module_init(mtd_stresstest_init);
+
+static void __exit mtd_stresstest_exit(void)
+{
+        return;
+}
+module_exit(mtd_stresstest_exit);
+
+MODULE_DESCRIPTION("Stress test module");
+MODULE_AUTHOR("Adrian Hunter");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/tests/mtd_subpagetest.c b/drivers/mtd/tests/mtd_subpagetest.c
new file mode 100644
index 00000000000..5b889724268
--- /dev/null
+++ b/drivers/mtd/tests/mtd_subpagetest.c
@@ -0,0 +1,525 @@
+/*
+ * Copyright (C) 2006-2007 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING. If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Test sub-page read and write on MTD device.
+ * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/mtd/mtd.h>
+#include <linux/sched.h>
+
+#define PRINT_PREF KERN_INFO "mtd_subpagetest: "
+
+static int dev;
+module_param(dev, int, S_IRUGO);
+MODULE_PARM_DESC(dev, "MTD device number to use");
+
+static struct mtd_info *mtd;
+static unsigned char *writebuf;
+static unsigned char *readbuf;
+static unsigned char *bbt;
+
+static int subpgsize;
+static int bufsize;
+static int ebcnt;
+static int pgcnt;
+static int errcnt;
+static unsigned long next = 1;
+
+static inline unsigned int simple_rand(void)
+{
+        next = next * 1103515245 + 12345;
+        return (unsigned int)((next / 65536) % 32768);
+}
+
+static inline void simple_srand(unsigned long seed)
+{
+        next = seed;
+}
+
+static void set_random_data(unsigned char *buf, size_t len)
+{
+        size_t i;
+
+        for (i = 0; i < len; ++i)
+                buf[i] = simple_rand();
+}
+
+static inline void clear_data(unsigned char *buf, size_t len)
+{
+        memset(buf, 0, len);
+}
+
+static int erase_eraseblock(int ebnum)
+{
+        int err;
+        struct erase_info ei;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        memset(&ei, 0, sizeof(struct erase_info));
+        ei.mtd  = mtd;
+        ei.addr = addr;
+        ei.len  = mtd->erasesize;
+
+        err = mtd->erase(mtd, &ei);
+        if (err) {
+                printk(PRINT_PREF "error %d while erasing EB %d\n", err, ebnum);
+                return err;
+        }
+
+        if (ei.state == MTD_ERASE_FAILED) {
+                printk(PRINT_PREF "some erase error occurred at EB %d\n",
+                       ebnum);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+static int erase_whole_device(void)
+{
+        int err;
+        unsigned int i;
+
+        printk(PRINT_PREF "erasing whole device\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = erase_eraseblock(i);
+                if (err)
+                        return err;
+                cond_resched();
+        }
+        printk(PRINT_PREF "erased %u eraseblocks\n", i);
+        return 0;
+}
+
+static int write_eraseblock(int ebnum)
+{
+        size_t written = 0;
+        int err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        set_random_data(writebuf, subpgsize);
+        err = mtd->write(mtd, addr, subpgsize, &written, writebuf);
+        if (unlikely(err || written != subpgsize)) {
+                printk(PRINT_PREF "error: write failed at %#llx\n",
+                       (long long)addr);
+                if (written != subpgsize) {
+                        printk(PRINT_PREF "  write size: %#x\n", subpgsize);
+                        printk(PRINT_PREF "  written: %#zx\n", written);
+                }
+                return err ? err : -1;
+        }
+
+        addr += subpgsize;
+
+        set_random_data(writebuf, subpgsize);
+        err = mtd->write(mtd, addr, subpgsize, &written, writebuf);
+        if (unlikely(err || written != subpgsize)) {
+                printk(PRINT_PREF "error: write failed at %#llx\n",
+                       (long long)addr);
+                if (written != subpgsize) {
+                        printk(PRINT_PREF "  write size: %#x\n", subpgsize);
+                        printk(PRINT_PREF "  written: %#zx\n", written);
+                }
+                return err ? err : -1;
+        }
+
+        return err;
+}
+
+static int write_eraseblock2(int ebnum)
+{
+        size_t written = 0;
+        int err = 0, k;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        for (k = 1; k < 33; ++k) {
+                if (addr + (subpgsize * k) > (ebnum + 1) * mtd->erasesize)
+                        break;
+                set_random_data(writebuf, subpgsize * k);
+                err = mtd->write(mtd, addr, subpgsize * k, &written, writebuf);
+                if (unlikely(err || written != subpgsize * k)) {
+                        printk(PRINT_PREF "error: write failed at %#llx\n",
+                               (long long)addr);
+                        if (written != subpgsize) {
+                                printk(PRINT_PREF "  write size: %#x\n",
+                                       subpgsize * k);
+                                printk(PRINT_PREF "  written: %#08zx\n",
+                                       written);
+                        }
+                        return err ? err : -1;
+                }
+                addr += subpgsize * k;
+        }
+
+        return err;
+}
+
+static void print_subpage(unsigned char *p)
+{
+        int i, j;
+
+        for (i = 0; i < subpgsize; ) {
+                for (j = 0; i < subpgsize && j < 32; ++i, ++j)
+                        printk("%02x", *p++);
+                printk("\n");
+        }
+}
+
+static int verify_eraseblock(int ebnum)
+{
+        size_t read = 0;
+        int err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        set_random_data(writebuf, subpgsize);
+        clear_data(readbuf, subpgsize);
+        read = 0;
+        err = mtd->read(mtd, addr, subpgsize, &read, readbuf);
+        if (unlikely(err || read != subpgsize)) {
+                if (err == -EUCLEAN && read == subpgsize) {
+                        printk(PRINT_PREF "ECC correction at %#llx\n",
+                               (long long)addr);
+                        err = 0;
+                } else {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)addr);
+                        return err ? err : -1;
+                }
+        }
+        if (unlikely(memcmp(readbuf, writebuf, subpgsize))) {
+                printk(PRINT_PREF "error: verify failed at %#llx\n",
+                       (long long)addr);
+                printk(PRINT_PREF "------------- written----------------\n");
+                print_subpage(writebuf);
+                printk(PRINT_PREF "------------- read ------------------\n");
+                print_subpage(readbuf);
+                printk(PRINT_PREF "-------------------------------------\n");
+                errcnt += 1;
+        }
+
+        addr += subpgsize;
+
+        set_random_data(writebuf, subpgsize);
+        clear_data(readbuf, subpgsize);
+        read = 0;
+        err = mtd->read(mtd, addr, subpgsize, &read, readbuf);
+        if (unlikely(err || read != subpgsize)) {
+                if (err == -EUCLEAN && read == subpgsize) {
+                        printk(PRINT_PREF "ECC correction at %#llx\n",
+                               (long long)addr);
+                        err = 0;
+                } else {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)addr);
+                        return err ? err : -1;
+                }
+        }
+        if (unlikely(memcmp(readbuf, writebuf, subpgsize))) {
+                printk(PRINT_PREF "error: verify failed at %#llx\n",
+                       (long long)addr);
+                printk(PRINT_PREF "------------- written----------------\n");
+                print_subpage(writebuf);
+                printk(PRINT_PREF "------------- read ------------------\n");
+                print_subpage(readbuf);
+                printk(PRINT_PREF "-------------------------------------\n");
+                errcnt += 1;
+        }
+
+        return err;
+}
+
+static int verify_eraseblock2(int ebnum)
+{
+        size_t read = 0;
+        int err = 0, k;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        for (k = 1; k < 33; ++k) {
+                if (addr + (subpgsize * k) > (ebnum + 1) * mtd->erasesize)
+                        break;
+                set_random_data(writebuf, subpgsize * k);
+                clear_data(readbuf, subpgsize * k);
+                read = 0;
+                err = mtd->read(mtd, addr, subpgsize * k, &read, readbuf);
+                if (unlikely(err || read != subpgsize * k)) {
+                        if (err == -EUCLEAN && read == subpgsize * k) {
+                                printk(PRINT_PREF "ECC correction at %#llx\n",
+                                       (long long)addr);
+                                err = 0;
+                        } else {
+                                printk(PRINT_PREF "error: read failed at "
+                                       "%#llx\n", (long long)addr);
+                                return err ? err : -1;
+                        }
+                }
+                if (unlikely(memcmp(readbuf, writebuf, subpgsize * k))) {
+                        printk(PRINT_PREF "error: verify failed at %#llx\n",
+                               (long long)addr);
+                        errcnt += 1;
+                }
+                addr += subpgsize * k;
+        }
+
+        return err;
+}
+
+static int verify_eraseblock_ff(int ebnum)
+{
+        uint32_t j;
+        size_t read = 0;
+        int err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        memset(writebuf, 0xff, subpgsize);
+        for (j = 0; j < mtd->erasesize / subpgsize; ++j) {
+                clear_data(readbuf, subpgsize);
+                read = 0;
+                err = mtd->read(mtd, addr, subpgsize, &read, readbuf);
+                if (unlikely(err || read != subpgsize)) {
+                        if (err == -EUCLEAN && read == subpgsize) {
+                                printk(PRINT_PREF "ECC correction at %#llx\n",
+                                       (long long)addr);
+                                err = 0;
+                        } else {
+                                printk(PRINT_PREF "error: read failed at "
+                                       "%#llx\n", (long long)addr);
+                                return err ? err : -1;
+                        }
+                }
+                if (unlikely(memcmp(readbuf, writebuf, subpgsize))) {
+                        printk(PRINT_PREF "error: verify 0xff failed at "
+                               "%#llx\n", (long long)addr);
+                        errcnt += 1;
+                }
+                addr += subpgsize;
+        }
+
+        return err;
+}
+
+static int verify_all_eraseblocks_ff(void)
+{
+        int err;
+        unsigned int i;
+
+        printk(PRINT_PREF "verifying all eraseblocks for 0xff\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = verify_eraseblock_ff(i);
+                if (err)
+                        return err;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "verified up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "verified %u eraseblocks\n", i);
+        return 0;
+}
+
+static int is_block_bad(int ebnum)
+{
+        loff_t addr = ebnum * mtd->erasesize;
+        int ret;
+
+        ret = mtd->block_isbad(mtd, addr);
+        if (ret)
+                printk(PRINT_PREF "block %d is bad\n", ebnum);
+        return ret;
+}
+
+static int scan_for_bad_eraseblocks(void)
+{
+        int i, bad = 0;
+
+        bbt = kmalloc(ebcnt, GFP_KERNEL);
+        if (!bbt) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                return -ENOMEM;
+        }
+        memset(bbt, 0 , ebcnt);
+
+        printk(PRINT_PREF "scanning for bad eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                bbt[i] = is_block_bad(i) ? 1 : 0;
+                if (bbt[i])
+                        bad += 1;
+                cond_resched();
+        }
+        printk(PRINT_PREF "scanned %d eraseblocks, %d are bad\n", i, bad);
+        return 0;
+}
+
+static int __init mtd_subpagetest_init(void)
+{
+        int err = 0;
+        uint32_t i;
+        uint64_t tmp;
+
+        printk(KERN_INFO "\n");
+        printk(KERN_INFO "=================================================\n");
+        printk(PRINT_PREF "MTD device: %d\n", dev);
+
+        mtd = get_mtd_device(NULL, dev);
+        if (IS_ERR(mtd)) {
+                err = PTR_ERR(mtd);
+                printk(PRINT_PREF "error: cannot get MTD device\n");
+                return err;
+        }
+
+        if (mtd->type != MTD_NANDFLASH) {
+                printk(PRINT_PREF "this test requires NAND flash\n");
+                goto out;
+        }
+
+        subpgsize = mtd->writesize >> mtd->subpage_sft;
+        printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
+               "page size %u, subpage size %u, count of eraseblocks %u, "
+               "pages per eraseblock %u, OOB size %u\n",
+               (unsigned long long)mtd->size, mtd->erasesize,
+               mtd->writesize, subpgsize, ebcnt, pgcnt, mtd->oobsize);
+
+        err = -ENOMEM;
+        bufsize = subpgsize * 32;
+        writebuf = kmalloc(bufsize, GFP_KERNEL);
+        if (!writebuf) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+        readbuf = kmalloc(bufsize, GFP_KERNEL);
+        if (!readbuf) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+
+        tmp = mtd->size;
+        do_div(tmp, mtd->erasesize);
+        ebcnt = tmp;
+        pgcnt = mtd->erasesize / mtd->writesize;
+
+        err = scan_for_bad_eraseblocks();
+        if (err)
+                goto out;
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        printk(PRINT_PREF "writing whole device\n");
+        simple_srand(1);
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = write_eraseblock(i);
+                if (unlikely(err))
+                        goto out;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "written up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "written %u eraseblocks\n", i);
+
+        simple_srand(1);
+        printk(PRINT_PREF "verifying all eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = verify_eraseblock(i);
+                if (unlikely(err))
+                        goto out;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "verified up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "verified %u eraseblocks\n", i);
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        err = verify_all_eraseblocks_ff();
+        if (err)
+                goto out;
+
+        /* Write all eraseblocks */
+        simple_srand(3);
+        printk(PRINT_PREF "writing whole device\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = write_eraseblock2(i);
+                if (unlikely(err))
+                        goto out;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "written up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "written %u eraseblocks\n", i);
+
+        /* Check all eraseblocks */
+        simple_srand(3);
+        printk(PRINT_PREF "verifying all eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = verify_eraseblock2(i);
+                if (unlikely(err))
+                        goto out;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "verified up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "verified %u eraseblocks\n", i);
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        err = verify_all_eraseblocks_ff();
+        if (err)
+                goto out;
+
+        printk(PRINT_PREF "finished with %d errors\n", errcnt);
+
+out:
+        kfree(bbt);
+        kfree(readbuf);
+        kfree(writebuf);
+        put_mtd_device(mtd);
+        if (err)
+                printk(PRINT_PREF "error %d occurred\n", err);
+        printk(KERN_INFO "=================================================\n");
+        return err;
+}
+module_init(mtd_subpagetest_init);
+
+static void __exit mtd_subpagetest_exit(void)
+{
+        return;
+}
+module_exit(mtd_subpagetest_exit);
+
+MODULE_DESCRIPTION("Subpage test module");
+MODULE_AUTHOR("Adrian Hunter");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/tests/mtd_torturetest.c b/drivers/mtd/tests/mtd_torturetest.c
new file mode 100644
index 00000000000..631a0ab3a33
--- /dev/null
+++ b/drivers/mtd/tests/mtd_torturetest.c
@@ -0,0 +1,530 @@
+/*
+ * Copyright (C) 2006-2008 Artem Bityutskiy
+ * Copyright (C) 2006-2008 Jarkko Lavinen
+ * Copyright (C) 2006-2008 Adrian Hunter
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING. If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Authors: Artem Bityutskiy, Jarkko Lavinen, Adria Hunter
+ *
+ * WARNING: this test program may kill your flash and your device. Do not
+ * use it unless you know what you do. Authors are not responsible for any
+ * damage caused by this program.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/mtd/mtd.h>
+#include <linux/sched.h>
+
+#define PRINT_PREF KERN_INFO "mtd_torturetest: "
+#define RETRIES 3
+
+static int eb = 8;
+module_param(eb, int, S_IRUGO);
+MODULE_PARM_DESC(eb, "eraseblock number within the selected MTD device");
+
+static int ebcnt = 32;
+module_param(ebcnt, int, S_IRUGO);
+MODULE_PARM_DESC(ebcnt, "number of consecutive eraseblocks to torture");
+
+static int pgcnt;
+module_param(pgcnt, int, S_IRUGO);
+MODULE_PARM_DESC(pgcnt, "number of pages per eraseblock to torture (0 => all)");
+
+static int dev;
+module_param(dev, int, S_IRUGO);
+MODULE_PARM_DESC(dev, "MTD device number to use");
+
+static int gran = 512;
+module_param(gran, int, S_IRUGO);
+MODULE_PARM_DESC(gran, "how often the status information should be printed");
+
+static int check = 1;
+module_param(check, int, S_IRUGO);
+MODULE_PARM_DESC(check, "if the written data should be checked");
+
+static unsigned int cycles_count;
+module_param(cycles_count, uint, S_IRUGO);
+MODULE_PARM_DESC(cycles_count, "how many erase cycles to do "
+                               "(infinite by default)");
+
+static struct mtd_info *mtd;
+
+/* This buffer contains 0x555555...0xAAAAAA... pattern */
+static unsigned char *patt_5A5;
+/* This buffer contains 0xAAAAAA...0x555555... pattern */
+static unsigned char *patt_A5A;
+/* This buffer contains all 0xFF bytes */
+static unsigned char *patt_FF;
+/* This a temporary buffer is use when checking data */
+static unsigned char *check_buf;
+/* How many erase cycles were done */
+static unsigned int erase_cycles;
+
+static int pgsize;
+static struct timeval start, finish;
+
+static void report_corrupt(unsigned char *read, unsigned char *written);
+
+static inline void start_timing(void)
+{
+        do_gettimeofday(&start);
+}
+
+static inline void stop_timing(void)
+{
+        do_gettimeofday(&finish);
+}
+
+/*
+ * Erase eraseblock number @ebnum.
+ */
+static inline int erase_eraseblock(int ebnum)
+{
+        int err;
+        struct erase_info ei;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        memset(&ei, 0, sizeof(struct erase_info));
+        ei.mtd  = mtd;
+        ei.addr = addr;
+        ei.len  = mtd->erasesize;
+
+        err = mtd->erase(mtd, &ei);
+        if (err) {
+                printk(PRINT_PREF "error %d while erasing EB %d\n", err, ebnum);
+                return err;
+        }
+
+        if (ei.state == MTD_ERASE_FAILED) {
+                printk(PRINT_PREF "some erase error occurred at EB %d\n",
+                       ebnum);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+/*
+ * Check that the contents of eraseblock number @enbum is equivalent to the
+ * @buf buffer.
+ */
+static inline int check_eraseblock(int ebnum, unsigned char *buf)
+{
+        int err, retries = 0;
+        size_t read = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+        size_t len = mtd->erasesize;
+
+        if (pgcnt) {
+                addr = (ebnum + 1) * mtd->erasesize - pgcnt * pgsize;
+                len = pgcnt * pgsize;
+        }
+
+retry:
+        err = mtd->read(mtd, addr, len, &read, check_buf);
+        if (err == -EUCLEAN)
+                printk(PRINT_PREF "single bit flip occurred at EB %d "
+                       "MTD reported that it was fixed.\n", ebnum);
+        else if (err) {
+                printk(PRINT_PREF "error %d while reading EB %d, "
+                       "read %zd\n", err, ebnum, read);
+                return err;
+        }
+
+        if (read != len) {
+                printk(PRINT_PREF "failed to read %zd bytes from EB %d, "
+                       "read only %zd, but no error reported\n",
+                       len, ebnum, read);
+                return -EIO;
+        }
+
+        if (memcmp(buf, check_buf, len)) {
+                printk(PRINT_PREF "read wrong data from EB %d\n", ebnum);
+                report_corrupt(check_buf, buf);
+
+                if (retries++ < RETRIES) {
+                        /* Try read again */
+                        yield();
+                        printk(PRINT_PREF "re-try reading data from EB %d\n",
+                               ebnum);
+                        goto retry;
+                } else {
+                        printk(PRINT_PREF "retried %d times, still errors, "
+                               "give-up\n", RETRIES);
+                        return -EINVAL;
+                }
+        }
+
+        if (retries != 0)
+                printk(PRINT_PREF "only attempt number %d was OK (!!!)\n",
+                       retries);
+
+        return 0;
+}
+
+static inline int write_pattern(int ebnum, void *buf)
+{
+        int err;
+        size_t written = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+        size_t len = mtd->erasesize;
+
+        if (pgcnt) {
+                addr = (ebnum + 1) * mtd->erasesize - pgcnt * pgsize;
+                len = pgcnt * pgsize;
+        }
+        err = mtd->write(mtd, addr, len, &written, buf);
+        if (err) {
+                printk(PRINT_PREF "error %d while writing EB %d, written %zd"
+                      " bytes\n", err, ebnum, written);
+                return err;
+        }
+        if (written != len) {
+                printk(PRINT_PREF "written only %zd bytes of %zd, but no error"
+                       " reported\n", written, len);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+static int __init tort_init(void)
+{
+        int err = 0, i, infinite = !cycles_count;
+        int bad_ebs[ebcnt];
+
+        printk(KERN_INFO "\n");
+        printk(KERN_INFO "=================================================\n");
+        printk(PRINT_PREF "Warning: this program is trying to wear out your "
+               "flash, stop it if this is not wanted.\n");
+        printk(PRINT_PREF "MTD device: %d\n", dev);
+        printk(PRINT_PREF "torture %d eraseblocks (%d-%d) of mtd%d\n",
+               ebcnt, eb, eb + ebcnt - 1, dev);
+        if (pgcnt)
+                printk(PRINT_PREF "torturing just %d pages per eraseblock\n",
+                        pgcnt);
+        printk(PRINT_PREF "write verify %s\n", check ? "enabled" : "disabled");
+
+        mtd = get_mtd_device(NULL, dev);
+        if (IS_ERR(mtd)) {
+                err = PTR_ERR(mtd);
+                printk(PRINT_PREF "error: cannot get MTD device\n");
+                return err;
+        }
+
+        if (mtd->writesize == 1) {
+                printk(PRINT_PREF "not NAND flash, assume page size is 512 "
+                       "bytes.\n");
+                pgsize = 512;
+        } else
+                pgsize = mtd->writesize;
+
+        if (pgcnt && (pgcnt > mtd->erasesize / pgsize || pgcnt < 0)) {
+                printk(PRINT_PREF "error: invalid pgcnt value %d\n", pgcnt);
+                goto out_mtd;
+        }
+
+        err = -ENOMEM;
+        patt_5A5 = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!patt_5A5) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out_mtd;
+        }
+
+        patt_A5A = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!patt_A5A) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out_patt_5A5;
+        }
+
+        patt_FF = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!patt_FF) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out_patt_A5A;
+        }
+
+        check_buf = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!check_buf) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out_patt_FF;
+        }
+
+        err = 0;
+
+        /* Initialize patterns */
+        memset(patt_FF, 0xFF, mtd->erasesize);
+        for (i = 0; i < mtd->erasesize / pgsize; i++) {
+                if (!(i & 1)) {
+                        memset(patt_5A5 + i * pgsize, 0x55, pgsize);
+                        memset(patt_A5A + i * pgsize, 0xAA, pgsize);
+                } else {
+                        memset(patt_5A5 + i * pgsize, 0xAA, pgsize);
+                        memset(patt_A5A + i * pgsize, 0x55, pgsize);
+                }
+        }
+
+        /*
+         * Check if there is a bad eraseblock among those we are going to test.
+         */
+        memset(&bad_ebs[0], 0, sizeof(int) * ebcnt);
+        if (mtd->block_isbad) {
+                for (i = eb; i < eb + ebcnt; i++) {
+                        err = mtd->block_isbad(mtd,
+                                               (loff_t)i * mtd->erasesize);
+
+                        if (err < 0) {
+                                printk(PRINT_PREF "block_isbad() returned %d "
+                                       "for EB %d\n", err, i);
+                                goto out;
+                        }
+
+                        if (err) {
+                                printk("EB %d is bad. Skip it.\n", i);
+                                bad_ebs[i - eb] = 1;
+                        }
+                }
+        }
+
+        start_timing();
+        while (1) {
+                int i;
+                void *patt;
+
+                /* Erase all eraseblocks */
+                for (i = eb; i < eb + ebcnt; i++) {
+                        if (bad_ebs[i - eb])
+                                continue;
+                        err = erase_eraseblock(i);
+                        if (err)
+                                goto out;
+                        cond_resched();
+                }
+
+                /* Check if the eraseblocks contain only 0xFF bytes */
+                if (check) {
+                        for (i = eb; i < eb + ebcnt; i++) {
+                                if (bad_ebs[i - eb])
+                                        continue;
+                                err = check_eraseblock(i, patt_FF);
+                                if (err) {
+                                        printk(PRINT_PREF "verify failed"
+                                               " for 0xFF... pattern\n");
+                                        goto out;
+                                }
+                                cond_resched();
+                        }
+                }
+
+                /* Write the pattern */
+                for (i = eb; i < eb + ebcnt; i++) {
+                        if (bad_ebs[i - eb])
+                                continue;
+                        if ((eb + erase_cycles) & 1)
+                                patt = patt_5A5;
+                        else
+                                patt = patt_A5A;
+                        err = write_pattern(i, patt);
+                        if (err)
+                                goto out;
+                        cond_resched();
+                }
+
+                /* Verify what we wrote */
+                if (check) {
+                        for (i = eb; i < eb + ebcnt; i++) {
+                                if (bad_ebs[i - eb])
+                                        continue;
+                                if ((eb + erase_cycles) & 1)
+                                        patt = patt_5A5;
+                                else
+                                        patt = patt_A5A;
+                                err = check_eraseblock(i, patt);
+                                if (err) {
+                                        printk(PRINT_PREF "verify failed for %s"
+                                               " pattern\n",
+                                               ((eb + erase_cycles) & 1) ?
+                                               "0x55AA55..." : "0xAA55AA...");
+                                        goto out;
+                                }
+                                cond_resched();
+                        }
+                }
+
+                erase_cycles += 1;
+
+                if (erase_cycles % gran == 0) {
+                        long ms;
+
+                        stop_timing();
+                        ms = (finish.tv_sec - start.tv_sec) * 1000 +
+                             (finish.tv_usec - start.tv_usec) / 1000;
+                        printk(PRINT_PREF "%08u erase cycles done, took %lu "
+                               "milliseconds (%lu seconds)\n",
+                               erase_cycles, ms, ms / 1000);
+                        start_timing();
+                }
+
+                if (!infinite && --cycles_count == 0)
+                        break;
+        }
+out:
+
+        printk(PRINT_PREF "finished after %u erase cycles\n",
+               erase_cycles);
+        kfree(check_buf);
+out_patt_FF:
+        kfree(patt_FF);
+out_patt_A5A:
+        kfree(patt_A5A);
+out_patt_5A5:
+        kfree(patt_5A5);
+out_mtd:
+        put_mtd_device(mtd);
+        if (err)
+                printk(PRINT_PREF "error %d occurred during torturing\n", err);
+        printk(KERN_INFO "=================================================\n");
+        return err;
+}
+module_init(tort_init);
+
+static void __exit tort_exit(void)
+{
+        return;
+}
+module_exit(tort_exit);
+
+static int countdiffs(unsigned char *buf, unsigned char *check_buf,
+                      unsigned offset, unsigned len, unsigned *bytesp,
+                      unsigned *bitsp);
+static void print_bufs(unsigned char *read, unsigned char *written, int start,
+                       int len);
+
+/*
+ * Report the detailed information about how the read EB differs from what was
+ * written.
+ */
+static void report_corrupt(unsigned char *read, unsigned char *written)
+{
+        int i;
+        int bytes, bits, pages, first;
+        int offset, len;
+        size_t check_len = mtd->erasesize;
+
+        if (pgcnt)
+                check_len = pgcnt * pgsize;
+
+        bytes = bits = pages = 0;
+        for (i = 0; i < check_len; i += pgsize)
+                if (countdiffs(written, read, i, pgsize, &bytes,
+                               &bits) >= 0)
+                        pages++;
+
+        printk(PRINT_PREF "verify fails on %d pages, %d bytes/%d bits\n",
+               pages, bytes, bits);
+        printk(PRINT_PREF "The following is a list of all differences between"
+               " what was read from flash and what was expected\n");
+
+        for (i = 0; i < check_len; i += pgsize) {
+                cond_resched();
+                bytes = bits = 0;
+                first = countdiffs(written, read, i, pgsize, &bytes,
+                                   &bits);
+                if (first < 0)
+                        continue;
+
+                printk("-------------------------------------------------------"
+                       "----------------------------------\n");
+
+                printk(PRINT_PREF "Page %zd has %d bytes/%d bits failing verify,"
+                       " starting at offset 0x%x\n",
+                       (mtd->erasesize - check_len + i) / pgsize,
+                       bytes, bits, first);
+
+                offset = first & ~0x7;
+                len = ((first + bytes) | 0x7) + 1 - offset;
+
+                print_bufs(read, written, offset, len);
+        }
+}
+
+static void print_bufs(unsigned char *read, unsigned char *written, int start,
+                       int len)
+{
+        int i = 0, j1, j2;
+        char *diff;
+
+        printk("Offset       Read                          Written\n");
+        while (i < len) {
+                printk("0x%08x: ", start + i);
+                diff = "   ";
+                for (j1 = 0; j1 < 8 && i + j1 < len; j1++) {
+                        printk(" %02x", read[start + i + j1]);
+                        if (read[start + i + j1] != written[start + i + j1])
+                                diff = "***";
+                }
+
+                while (j1 < 8) {
+                        printk(" ");
+                        j1 += 1;
+                }
+
+                printk("  %s ", diff);
+
+                for (j2 = 0; j2 < 8 && i + j2 < len; j2++)
+                        printk(" %02x", written[start + i + j2]);
+                printk("\n");
+                i += 8;
+        }
+}
+
+/*
+ * Count the number of differing bytes and bits and return the first differing
+ * offset.
+ */
+static int countdiffs(unsigned char *buf, unsigned char *check_buf,
+                      unsigned offset, unsigned len, unsigned *bytesp,
+                      unsigned *bitsp)
+{
+        unsigned i, bit;
+        int first = -1;
+
+        for (i = offset; i < offset + len; i++)
+                if (buf[i] != check_buf[i]) {
+                        first = i;
+                        break;
+                }
+
+        while (i < offset + len) {
+                if (buf[i] != check_buf[i]) {
+                        (*bytesp)++;
+                        bit = 1;
+                        while (bit < 256) {
+                                if ((buf[i] & bit) != (check_buf[i] & bit))
+                                        (*bitsp)++;
+                                bit <<= 1;
+                        }
+                }
+                i++;
+        }
+
+        return first;
+}
+
+MODULE_DESCRIPTION("Eraseblock torturing module");
+MODULE_AUTHOR("Artem Bityutskiy, Jarkko Lavinen, Adrian Hunter");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 7caf22cd5ad..9082768cc6c 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -561,7 +561,7 @@ static int io_init(struct ubi_device *ubi)
          */
 
         ubi->peb_size   = ubi->mtd->erasesize;
-        ubi->peb_count  = ubi->mtd->size / ubi->mtd->erasesize;
+        ubi->peb_count  = mtd_div_by_eb(ubi->mtd->size, ubi->mtd);
         ubi->flash_size = ubi->mtd->size;
 
         if (ubi->mtd->block_isbad && ubi->mtd->block_markbad)
diff --git a/drivers/mtd/ubi/gluebi.c b/drivers/mtd/ubi/gluebi.c
index 605812bb0b1..6dd4f5e77f8 100644
--- a/drivers/mtd/ubi/gluebi.c
+++ b/drivers/mtd/ubi/gluebi.c
@@ -215,7 +215,8 @@ static int gluebi_erase(struct mtd_info *mtd, struct erase_info *instr)
         struct ubi_volume *vol;
         struct ubi_device *ubi;
 
-        dbg_gen("erase %u bytes at offset %u", instr->len, instr->addr);
+        dbg_gen("erase %llu bytes at offset %llu", (unsigned long long)instr->len,
+                 (unsigned long long)instr->addr);
 
         if (instr->addr < 0 || instr->addr > mtd->size - mtd->erasesize)
                 return -EINVAL;
@@ -223,11 +224,11 @@ static int gluebi_erase(struct mtd_info *mtd, struct erase_info *instr)
         if (instr->len < 0 || instr->addr + instr->len > mtd->size)
                 return -EINVAL;
 
-        if (instr->addr % mtd->writesize || instr->len % mtd->writesize)
+        if (mtd_mod_by_ws(instr->addr, mtd) || mtd_mod_by_ws(instr->len, mtd))
                 return -EINVAL;
 
-        lnum = instr->addr / mtd->erasesize;
-        count = instr->len / mtd->erasesize;
+        lnum = mtd_div_by_eb(instr->addr, mtd);
+        count = mtd_div_by_eb(instr->len, mtd);
 
         vol = container_of(mtd, struct ubi_volume, gluebi_mtd);
         ubi = vol->ubi;
@@ -255,7 +256,7 @@ static int gluebi_erase(struct mtd_info *mtd, struct erase_info *instr)
 
 out_err:
         instr->state = MTD_ERASE_FAILED;
-        instr->fail_addr = lnum * mtd->erasesize;
+        instr->fail_addr = (long long)lnum * mtd->erasesize;
         return err;
 }
 
@@ -294,7 +295,7 @@ int ubi_create_gluebi(struct ubi_device *ubi, struct ubi_volume *vol)
          * bytes.
          */
         if (vol->vol_type == UBI_DYNAMIC_VOLUME)
-                mtd->size = vol->usable_leb_size * vol->reserved_pebs;
+                mtd->size = (long long)vol->usable_leb_size * vol->reserved_pebs;
         else
                 mtd->size = vol->used_bytes;
 
@@ -304,8 +305,8 @@ int ubi_create_gluebi(struct ubi_device *ubi, struct ubi_volume *vol)
                 return -ENFILE;
         }
 
-        dbg_gen("added mtd%d (\"%s\"), size %u, EB size %u",
-                mtd->index, mtd->name, mtd->size, mtd->erasesize);
+        dbg_gen("added mtd%d (\"%s\"), size %llu, EB size %u",
+                mtd->index, mtd->name, (unsigned long long)mtd->size, mtd->erasesize);
         return 0;
 }
 
diff --git a/fs/jffs2/compr_rubin.c b/fs/jffs2/compr_rubin.c
index c73fa89b5f8..170d289ac78 100644
--- a/fs/jffs2/compr_rubin.c
+++ b/fs/jffs2/compr_rubin.c
@@ -22,9 +22,7 @@
 
 
 #define BIT_DIVIDER_MIPS 1043
-static int bits_mips[8] = { 277,249,290,267,229,341,212,241}; /* mips32 */
-
-#include <linux/errno.h>
+static int bits_mips[8] = { 277, 249, 290, 267, 229, 341, 212, 241};
 
 struct pushpull {
         unsigned char *buf;
@@ -43,7 +41,9 @@ struct rubin_state {
         int bits[8];
 };
 
-static inline void init_pushpull(struct pushpull *pp, char *buf, unsigned buflen, unsigned ofs, unsigned reserve)
+static inline void init_pushpull(struct pushpull *pp, char *buf,
+                                 unsigned buflen, unsigned ofs,
+                                 unsigned reserve)
 {
         pp->buf = buf;
         pp->buflen = buflen;
@@ -53,16 +53,14 @@ static inline void init_pushpull(struct pushpull *pp, char *buf, unsigned buflen
 
 static inline int pushbit(struct pushpull *pp, int bit, int use_reserved)
 {
-        if (pp->ofs >= pp->buflen - (use_reserved?0:pp->reserve)) {
+        if (pp->ofs >= pp->buflen - (use_reserved?0:pp->reserve))
                 return -ENOSPC;
-        }
 
-        if (bit) {
-                pp->buf[pp->ofs >> 3] |= (1<<(7-(pp->ofs &7)));
-        }
-        else {
-                pp->buf[pp->ofs >> 3] &= ~(1<<(7-(pp->ofs &7)));
-        }
+        if (bit)
+                pp->buf[pp->ofs >> 3] |= (1<<(7-(pp->ofs & 7)));
+        else
+                pp->buf[pp->ofs >> 3] &= ~(1<<(7-(pp->ofs & 7)));
+
         pp->ofs++;
 
         return 0;
@@ -97,6 +95,7 @@ static void init_rubin(struct rubin_state *rs, int div, int *bits)
         rs->p = (long) (2 * UPPER_BIT_RUBIN);
         rs->bit_number = (long) 0;
         rs->bit_divider = div;
+
         for (c=0; c<8; c++)
                 rs->bits[c] = bits[c];
 }
@@ -108,7 +107,8 @@ static int encode(struct rubin_state *rs, long A, long B, int symbol)
         long i0, i1;
         int ret;
 
-        while ((rs->q >= UPPER_BIT_RUBIN) || ((rs->p + rs->q) <= UPPER_BIT_RUBIN)) {
+        while ((rs->q >= UPPER_BIT_RUBIN) ||
+               ((rs->p + rs->q) <= UPPER_BIT_RUBIN)) {
                 rs->bit_number++;
 
                 ret = pushbit(&rs->pp, (rs->q & UPPER_BIT_RUBIN) ? 1 : 0, 0);
@@ -119,12 +119,12 @@ static int encode(struct rubin_state *rs, long A, long B, int symbol)
                 rs->p <<= 1;
         }
         i0 = A * rs->p / (A + B);
-        if (i0 <= 0) {
+        if (i0 <= 0)
                 i0 = 1;
-        }
-        if (i0 >= rs->p) {
+
+        if (i0 >= rs->p)
                 i0 = rs->p - 1;
-        }
+
         i1 = rs->p - i0;
 
         if (symbol == 0)
@@ -157,11 +157,13 @@ static void init_decode(struct rubin_state *rs, int div, int *bits)
         /* behalve lower */
         rs->rec_q = 0;
 
-        for (rs->bit_number = 0; rs->bit_number++ < RUBIN_REG_SIZE; rs->rec_q = rs->rec_q * 2 + (long) (pullbit(&rs->pp)))
+        for (rs->bit_number = 0; rs->bit_number++ < RUBIN_REG_SIZE;
+             rs->rec_q = rs->rec_q * 2 + (long) (pullbit(&rs->pp)))
                 ;
 }
 
-static void __do_decode(struct rubin_state *rs, unsigned long p, unsigned long q)
+static void __do_decode(struct rubin_state *rs, unsigned long p,
+                        unsigned long q)
 {
         register unsigned long lower_bits_rubin = LOWER_BITS_RUBIN;
         unsigned long rec_q;
@@ -207,12 +209,11 @@ static int decode(struct rubin_state *rs, long A, long B)
                 __do_decode(rs, p, q);
 
         i0 = A * rs->p / (A + B);
-        if (i0 <= 0) {
+        if (i0 <= 0)
                 i0 = 1;
-        }
-        if (i0 >= rs->p) {
+
+        if (i0 >= rs->p)
                 i0 = rs->p - 1;
-        }
 
         threshold = rs->q + i0;
         symbol = rs->rec_q >= threshold;
@@ -234,14 +235,15 @@ static int out_byte(struct rubin_state *rs, unsigned char byte)
         struct rubin_state rs_copy;
         rs_copy = *rs;
 
-        for (i=0;i<8;i++) {
-                ret = encode(rs, rs->bit_divider-rs->bits[i],rs->bits[i],byte&1);
+        for (i=0; i<8; i++) {
+                ret = encode(rs, rs->bit_divider-rs->bits[i],
+                             rs->bits[i], byte & 1);
                 if (ret) {
                         /* Failed. Restore old state */
                         *rs = rs_copy;
                         return ret;
                 }
-                byte=byte>>1;
+                byte >>= 1 ;
         }
         return 0;
 }
@@ -251,7 +253,8 @@ static int in_byte(struct rubin_state *rs)
         int i, result = 0, bit_divider = rs->bit_divider;
 
         for (i = 0; i < 8; i++)
-                result |= decode(rs, bit_divider - rs->bits[i], rs->bits[i]) << i;
+                result |= decode(rs, bit_divider - rs->bits[i],
+                                 rs->bits[i]) << i;
 
         return result;
 }
@@ -259,7 +262,8 @@ static int in_byte(struct rubin_state *rs)
 
 
 static int rubin_do_compress(int bit_divider, int *bits, unsigned char *data_in,
-                      unsigned char *cpage_out, uint32_t *sourcelen, uint32_t *dstlen)
+                             unsigned char *cpage_out, uint32_t *sourcelen,
+                             uint32_t *dstlen)
         {
         int outpos = 0;
         int pos=0;
@@ -295,7 +299,8 @@ static int rubin_do_compress(int bit_divider, int *bits, unsigned char *data_in,
 int jffs2_rubinmips_compress(unsigned char *data_in, unsigned char *cpage_out,
                    uint32_t *sourcelen, uint32_t *dstlen, void *model)
 {
-        return rubin_do_compress(BIT_DIVIDER_MIPS, bits_mips, data_in, cpage_out, sourcelen, dstlen);
+        return rubin_do_compress(BIT_DIVIDER_MIPS, bits_mips, data_in,
+                                 cpage_out, sourcelen, dstlen);
 }
 #endif
 static int jffs2_dynrubin_compress(unsigned char *data_in,
@@ -316,9 +321,8 @@ static int jffs2_dynrubin_compress(unsigned char *data_in,
                 return -1;
 
         memset(histo, 0, 256);
-        for (i=0; i<mysrclen; i++) {
+        for (i=0; i<mysrclen; i++)
                 histo[data_in[i]]++;
-        }
         memset(bits, 0, sizeof(int)*8);
         for (i=0; i<256; i++) {
                 if (i&128)
@@ -346,7 +350,8 @@ static int jffs2_dynrubin_compress(unsigned char *data_in,
                 cpage_out[i] = bits[i];
         }
 
-        ret = rubin_do_compress(256, bits, data_in, cpage_out+8, &mysrclen, &mydstlen);
+        ret = rubin_do_compress(256, bits, data_in, cpage_out+8, &mysrclen,
+                                &mydstlen);
         if (ret)
                 return ret;
 
@@ -363,8 +368,10 @@ static int jffs2_dynrubin_compress(unsigned char *data_in,
         return 0;
 }
 
-static void rubin_do_decompress(int bit_divider, int *bits, unsigned char *cdata_in,
-                         unsigned char *page_out, uint32_t srclen, uint32_t destlen)
+static void rubin_do_decompress(int bit_divider, int *bits,
+                                unsigned char *cdata_in, 
+                                unsigned char *page_out, uint32_t srclen,
+                                uint32_t destlen)
 {
         int outpos = 0;
         struct rubin_state rs;
@@ -372,9 +379,8 @@ static void rubin_do_decompress(int bit_divider, int *bits, unsigned char *cdata
         init_pushpull(&rs.pp, cdata_in, srclen, 0, 0);
         init_decode(&rs, bit_divider, bits);
 
-        while (outpos < destlen) {
+        while (outpos < destlen)
                 page_out[outpos++] = in_byte(&rs);
-        }
 }
 
 
@@ -383,7 +389,8 @@ static int jffs2_rubinmips_decompress(unsigned char *data_in,
                                       uint32_t sourcelen, uint32_t dstlen,
                                       void *model)
 {
-        rubin_do_decompress(BIT_DIVIDER_MIPS, bits_mips, data_in, cpage_out, sourcelen, dstlen);
+        rubin_do_decompress(BIT_DIVIDER_MIPS, bits_mips, data_in,
+                            cpage_out, sourcelen, dstlen);
         return 0;
 }
 
@@ -398,52 +405,53 @@ static int jffs2_dynrubin_decompress(unsigned char *data_in,
         for (c=0; c<8; c++)
                 bits[c] = data_in[c];
 
-        rubin_do_decompress(256, bits, data_in+8, cpage_out, sourcelen-8, dstlen);
+        rubin_do_decompress(256, bits, data_in+8, cpage_out, sourcelen-8,
+                            dstlen);
         return 0;
 }
 
 static struct jffs2_compressor jffs2_rubinmips_comp = {
-    .priority = JFFS2_RUBINMIPS_PRIORITY,
-    .name = "rubinmips",
-    .compr = JFFS2_COMPR_DYNRUBIN,
-    .compress = NULL, /*&jffs2_rubinmips_compress,*/
-    .decompress = &jffs2_rubinmips_decompress,
+        .priority = JFFS2_RUBINMIPS_PRIORITY,
+        .name = "rubinmips",
+        .compr = JFFS2_COMPR_DYNRUBIN,
+        .compress = NULL, /*&jffs2_rubinmips_compress,*/
+        .decompress = &jffs2_rubinmips_decompress,
 #ifdef JFFS2_RUBINMIPS_DISABLED
-    .disabled = 1,
+        .disabled = 1,
 #else
-    .disabled = 0,
+        .disabled = 0,
 #endif
 };
 
 int jffs2_rubinmips_init(void)
 {
-    return jffs2_register_compressor(&jffs2_rubinmips_comp);
+        return jffs2_register_compressor(&jffs2_rubinmips_comp);
 }
 
 void jffs2_rubinmips_exit(void)
 {
-    jffs2_unregister_compressor(&jffs2_rubinmips_comp);
+        jffs2_unregister_compressor(&jffs2_rubinmips_comp);
 }
 
 static struct jffs2_compressor jffs2_dynrubin_comp = {
-    .priority = JFFS2_DYNRUBIN_PRIORITY,
-    .name = "dynrubin",
-    .compr = JFFS2_COMPR_RUBINMIPS,
-    .compress = jffs2_dynrubin_compress,
-    .decompress = &jffs2_dynrubin_decompress,
+        .priority = JFFS2_DYNRUBIN_PRIORITY,
+        .name = "dynrubin",
+        .compr = JFFS2_COMPR_RUBINMIPS,
+        .compress = jffs2_dynrubin_compress,
+        .decompress = &jffs2_dynrubin_decompress,
 #ifdef JFFS2_DYNRUBIN_DISABLED
-    .disabled = 1,
+        .disabled = 1,
 #else
-    .disabled = 0,
+        .disabled = 0,
 #endif
 };
 
 int jffs2_dynrubin_init(void)
 {
-    return jffs2_register_compressor(&jffs2_dynrubin_comp);
+        return jffs2_register_compressor(&jffs2_dynrubin_comp);
 }
 
 void jffs2_dynrubin_exit(void)
 {
-    jffs2_unregister_compressor(&jffs2_dynrubin_comp);
+        jffs2_unregister_compressor(&jffs2_dynrubin_comp);
 }
diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c
index 259461b910a..c32b4a1ad6c 100644
--- a/fs/jffs2/erase.c
+++ b/fs/jffs2/erase.c
@@ -175,7 +175,7 @@ static void jffs2_erase_failed(struct jffs2_sb_info *c, struct jffs2_eraseblock
 {
         /* For NAND, if the failure did not occur at the device level for a
            specific physical page, don't bother updating the bad block table. */
-        if (jffs2_cleanmarker_oob(c) && (bad_offset != MTD_FAIL_ADDR_UNKNOWN)) {
+        if (jffs2_cleanmarker_oob(c) && (bad_offset != (uint32_t)MTD_FAIL_ADDR_UNKNOWN)) {
                 /* We had a device-level failure to erase.  Let's see if we've
                    failed too many times. */
                 if (!jffs2_write_nand_badblock(c, jeb, bad_offset)) {
@@ -209,7 +209,8 @@ static void jffs2_erase_callback(struct erase_info *instr)
         struct erase_priv_struct *priv = (void *)instr->priv;
 
         if(instr->state != MTD_ERASE_DONE) {
-                printk(KERN_WARNING "Erase at 0x%08x finished, but state != MTD_ERASE_DONE. State is 0x%x instead.\n", instr->addr, instr->state);
+                printk(KERN_WARNING "Erase at 0x%08llx finished, but state != MTD_ERASE_DONE. State is 0x%x instead.\n",
+                        (unsigned long long)instr->addr, instr->state);
                 jffs2_erase_failed(priv->c, priv->jeb, instr->fail_addr);
         } else {
                 jffs2_erase_succeeded(priv->c, priv->jeb);
diff --git a/include/linux/mtd/cfi.h b/include/linux/mtd/cfi.h
index 00e2b575021..88d3d8fbf9f 100644
--- a/include/linux/mtd/cfi.h
+++ b/include/linux/mtd/cfi.h
@@ -520,6 +520,7 @@ struct cfi_fixup {
 
 #define CFI_MFR_AMD 0x0001
 #define CFI_MFR_ATMEL 0x001F
+#define CFI_MFR_SAMSUNG 0x00EC
 #define CFI_MFR_ST  0x0020      /* STMicroelectronics */
 
 void cfi_fixup(struct mtd_info *mtd, struct cfi_fixup* fixups);
diff --git a/include/linux/mtd/ftl.h b/include/linux/mtd/ftl.h
index 0be442f881d..0555f7a0b9e 100644
--- a/include/linux/mtd/ftl.h
+++ b/include/linux/mtd/ftl.h
@@ -32,25 +32,25 @@
 #define _LINUX_FTL_H
 
 typedef struct erase_unit_header_t {
-    u_int8_t    LinkTargetTuple[5];
-    u_int8_t    DataOrgTuple[10];
-    u_int8_t    NumTransferUnits;
-    u_int32_t   EraseCount;
-    u_int16_t   LogicalEUN;
-    u_int8_t    BlockSize;
-    u_int8_t    EraseUnitSize;
-    u_int16_t   FirstPhysicalEUN;
-    u_int16_t   NumEraseUnits;
-    u_int32_t   FormattedSize;
-    u_int32_t   FirstVMAddress;
-    u_int16_t   NumVMPages;
-    u_int8_t    Flags;
-    u_int8_t    Code;
-    u_int32_t   SerialNumber;
-    u_int32_t   AltEUHOffset;
-    u_int32_t   BAMOffset;
-    u_int8_t    Reserved[12];
-    u_int8_t    EndTuple[2];
+    uint8_t     LinkTargetTuple[5];
+    uint8_t     DataOrgTuple[10];
+    uint8_t     NumTransferUnits;
+    uint32_t    EraseCount;
+    uint16_t    LogicalEUN;
+    uint8_t     BlockSize;
+    uint8_t     EraseUnitSize;
+    uint16_t    FirstPhysicalEUN;
+    uint16_t    NumEraseUnits;
+    uint32_t    FormattedSize;
+    uint32_t    FirstVMAddress;
+    uint16_t    NumVMPages;
+    uint8_t     Flags;
+    uint8_t     Code;
+    uint32_t    SerialNumber;
+    uint32_t    AltEUHOffset;
+    uint32_t    BAMOffset;
+    uint8_t     Reserved[12];
+    uint8_t     EndTuple[2];
 } erase_unit_header_t;
 
 /* Flags in erase_unit_header_t */
diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h
index aa30244492c..b981b877221 100644
--- a/include/linux/mtd/map.h
+++ b/include/linux/mtd/map.h
@@ -223,6 +223,7 @@ struct map_info {
            must leave it enabled. */
         void (*set_vpp)(struct map_info *, int);
 
+        unsigned long pfow_base;
         unsigned long map_priv_1;
         unsigned long map_priv_2;
         void *fldrv_priv;
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 64433eb411d..3aa5d77c2cd 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -15,6 +15,8 @@
 #include <linux/mtd/compatmac.h>
 #include <mtd/mtd-abi.h>
 
+#include <asm/div64.h>
+
 #define MTD_CHAR_MAJOR 90
 #define MTD_BLOCK_MAJOR 31
 #define MAX_MTD_DEVICES 32
@@ -25,20 +27,20 @@
 #define MTD_ERASE_DONE          0x08
 #define MTD_ERASE_FAILED        0x10
 
-#define MTD_FAIL_ADDR_UNKNOWN 0xffffffff
+#define MTD_FAIL_ADDR_UNKNOWN -1LL
 
 /* If the erase fails, fail_addr might indicate exactly which block failed.  If
    fail_addr = MTD_FAIL_ADDR_UNKNOWN, the failure was not at the device level or was not
    specific to any particular block. */
 struct erase_info {
         struct mtd_info *mtd;
-        u_int32_t addr;
-        u_int32_t len;
-        u_int32_t fail_addr;
+        uint64_t addr;
+        uint64_t len;
+        uint64_t fail_addr;
         u_long time;
         u_long retries;
-        u_int dev;
-        u_int cell;
+        unsigned dev;
+        unsigned cell;
         void (*callback) (struct erase_info *self);
         u_long priv;
         u_char state;
@@ -46,9 +48,9 @@ struct erase_info {
 };
 
 struct mtd_erase_region_info {
-        u_int32_t offset;                       /* At which this region starts, from the beginning of the MTD */
-        u_int32_t erasesize;            /* For this region */
-        u_int32_t numblocks;            /* Number of blocks of erasesize in this region */
+        uint64_t offset;                        /* At which this region starts, from the beginning of the MTD */
+        uint32_t erasesize;             /* For this region */
+        uint32_t numblocks;             /* Number of blocks of erasesize in this region */
         unsigned long *lockmap;         /* If keeping bitmap of locks */
 };
 
@@ -100,14 +102,14 @@ struct mtd_oob_ops {
 
 struct mtd_info {
         u_char type;
-        u_int32_t flags;
-        u_int32_t size;  // Total size of the MTD
+        uint32_t flags;
+        uint64_t size;   // Total size of the MTD
 
         /* "Major" erase size for the device. Naïve users may take this
          * to be the only erase size available, or may use the more detailed
          * information below if they desire
          */
-        u_int32_t erasesize;
+        uint32_t erasesize;
         /* Minimal writable flash unit size. In case of NOR flash it is 1 (even
          * though individual bits can be cleared), in case of NAND flash it is
          * one NAND page (or half, or one-fourths of it), in case of ECC-ed NOR
@@ -115,10 +117,20 @@ struct mtd_info {
          * Any driver registering a struct mtd_info must ensure a writesize of
          * 1 or larger.
          */
-        u_int32_t writesize;
+        uint32_t writesize;
+
+        uint32_t oobsize;   // Amount of OOB data per block (e.g. 16)
+        uint32_t oobavail;  // Available OOB bytes per block
 
-        u_int32_t oobsize;   // Amount of OOB data per block (e.g. 16)
-        u_int32_t oobavail;  // Available OOB bytes per block
+        /*
+         * If erasesize is a power of 2 then the shift is stored in
+         * erasesize_shift otherwise erasesize_shift is zero. Ditto writesize.
+         */
+        unsigned int erasesize_shift;
+        unsigned int writesize_shift;
+        /* Masks based on erasesize_shift and writesize_shift */
+        unsigned int erasesize_mask;
+        unsigned int writesize_mask;
 
         // Kernel-only stuff starts here.
         const char *name;
@@ -190,8 +202,8 @@ struct mtd_info {
         void (*sync) (struct mtd_info *mtd);
 
         /* Chip-supported device locking */
-        int (*lock) (struct mtd_info *mtd, loff_t ofs, size_t len);
-        int (*unlock) (struct mtd_info *mtd, loff_t ofs, size_t len);
+        int (*lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
+        int (*unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
 
         /* Power Management functions */
         int (*suspend) (struct mtd_info *mtd);
@@ -221,6 +233,35 @@ struct mtd_info {
         void (*put_device) (struct mtd_info *mtd);
 };
 
+static inline uint32_t mtd_div_by_eb(uint64_t sz, struct mtd_info *mtd)
+{
+        if (mtd->erasesize_shift)
+                return sz >> mtd->erasesize_shift;
+        do_div(sz, mtd->erasesize);
+        return sz;
+}
+
+static inline uint32_t mtd_mod_by_eb(uint64_t sz, struct mtd_info *mtd)
+{
+        if (mtd->erasesize_shift)
+                return sz & mtd->erasesize_mask;
+        return do_div(sz, mtd->erasesize);
+}
+
+static inline uint32_t mtd_div_by_ws(uint64_t sz, struct mtd_info *mtd)
+{
+        if (mtd->writesize_shift)
+                return sz >> mtd->writesize_shift;
+        do_div(sz, mtd->writesize);
+        return sz;
+}
+
+static inline uint32_t mtd_mod_by_ws(uint64_t sz, struct mtd_info *mtd)
+{
+        if (mtd->writesize_shift)
+                return sz & mtd->writesize_mask;
+        return do_div(sz, mtd->writesize);
+}
 
         /* Kernel-side ioctl definitions */
 
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 733d3f3b4eb..db5b63da2a7 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -335,17 +335,12 @@ struct nand_buffers {
  * @erase_cmd:          [INTERN] erase command write function, selectable due to AND support
  * @scan_bbt:           [REPLACEABLE] function to scan bad block table
  * @chip_delay:         [BOARDSPECIFIC] chip dependent delay for transfering data from array to read regs (tR)
- * @wq:                 [INTERN] wait queue to sleep on if a NAND operation is in progress
  * @state:              [INTERN] the current state of the NAND device
  * @oob_poi:            poison value buffer
  * @page_shift:         [INTERN] number of address bits in a page (column address bits)
  * @phys_erase_shift:   [INTERN] number of address bits in a physical eraseblock
  * @bbt_erase_shift:    [INTERN] number of address bits in a bbt entry
  * @chip_shift:         [INTERN] number of address bits in one chip
- * @datbuf:             [INTERN] internal buffer for one page + oob
- * @oobbuf:             [INTERN] oob buffer for one eraseblock
- * @oobdirty:           [INTERN] indicates that oob_buf must be reinitialized
- * @data_poi:           [INTERN] pointer to a data buffer
  * @options:            [BOARDSPECIFIC] various chip options. They can partly be set to inform nand_scan about
  *                      special functionality. See the defines for further explanation
  * @badblockpos:        [INTERN] position of the bad block marker in the oob area
@@ -399,7 +394,7 @@ struct nand_chip {
         int             bbt_erase_shift;
         int             chip_shift;
         int             numchips;
-        unsigned long   chipsize;
+        uint64_t        chipsize;
         int             pagemask;
         int             pagebuf;
         int             subpagesize;
diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h
index c92b4d43960..a45dd831b3f 100644
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -36,9 +36,9 @@
 
 struct mtd_partition {
         char *name;                     /* identifier string */
-        u_int32_t size;                 /* partition size */
-        u_int32_t offset;               /* offset within the master MTD space */
-        u_int32_t mask_flags;           /* master MTD flags to mask out for this partition */
+        uint64_t size;                  /* partition size */
+        uint64_t offset;                /* offset within the master MTD space */
+        uint32_t mask_flags;            /* master MTD flags to mask out for this partition */
         struct nand_ecclayout *ecclayout;       /* out of band layout for this partition (NAND only)*/
         struct mtd_info **mtdp;         /* pointer to store the MTD object */
 };
diff --git a/include/linux/mtd/pfow.h b/include/linux/mtd/pfow.h
new file mode 100644
index 00000000000..b730d4f8465
--- /dev/null
+++ b/include/linux/mtd/pfow.h
@@ -0,0 +1,159 @@
+/* Primary function overlay window definitions
+ * and service functions used by LPDDR chips
+ */
+#ifndef __LINUX_MTD_PFOW_H
+#define __LINUX_MTD_PFOW_H
+
+#include <linux/mtd/qinfo.h>
+
+/* PFOW registers addressing */
+/* Address of symbol "P" */
+#define PFOW_QUERY_STRING_P                     0x0000
+/* Address of symbol "F" */
+#define PFOW_QUERY_STRING_F                     0x0002
+/* Address of symbol "O" */
+#define PFOW_QUERY_STRING_O                     0x0004
+/* Address of symbol "W" */
+#define PFOW_QUERY_STRING_W                     0x0006
+/* Identification info for LPDDR chip */
+#define PFOW_MANUFACTURER_ID                    0x0020
+#define PFOW_DEVICE_ID                          0x0022
+/* Address in PFOW where prog buffer can can be found */
+#define PFOW_PROGRAM_BUFFER_OFFSET              0x0040
+/* Size of program buffer in words */
+#define PFOW_PROGRAM_BUFFER_SIZE                0x0042
+/* Address command code register */
+#define PFOW_COMMAND_CODE                       0x0080
+/* command data register */
+#define PFOW_COMMAND_DATA                       0x0084
+/* command address register lower address bits */
+#define PFOW_COMMAND_ADDRESS_L                  0x0088
+/* command address register upper address bits */
+#define PFOW_COMMAND_ADDRESS_H                  0x008a
+/* number of bytes to be proggrammed lower address bits */
+#define PFOW_DATA_COUNT_L                       0x0090
+/* number of bytes to be proggrammed higher address bits */
+#define PFOW_DATA_COUNT_H                       0x0092
+/* command execution register, the only possible value is 0x01 */
+#define PFOW_COMMAND_EXECUTE                    0x00c0
+/* 0x01 should be written at this address to clear buffer */
+#define PFOW_CLEAR_PROGRAM_BUFFER               0x00c4
+/* device program/erase suspend register */
+#define PFOW_PROGRAM_ERASE_SUSPEND              0x00c8
+/* device status register */
+#define PFOW_DSR                                0x00cc
+
+/* LPDDR memory device command codes */
+/* They are possible values of PFOW command code register */
+#define LPDDR_WORD_PROGRAM              0x0041
+#define LPDDR_BUFF_PROGRAM              0x00E9
+#define LPDDR_BLOCK_ERASE               0x0020
+#define LPDDR_LOCK_BLOCK                0x0061
+#define LPDDR_UNLOCK_BLOCK              0x0062
+#define LPDDR_READ_BLOCK_LOCK_STATUS    0x0065
+#define LPDDR_INFO_QUERY                0x0098
+#define LPDDR_READ_OTP                  0x0097
+#define LPDDR_PROG_OTP                  0x00C0
+#define LPDDR_RESUME                    0x00D0
+
+/* Defines possible value of PFOW command execution register */
+#define LPDDR_START_EXECUTION                   0x0001
+
+/* Defines possible value of PFOW program/erase suspend register */
+#define LPDDR_SUSPEND                           0x0001
+
+/* Possible values of PFOW device status register */
+/* access R - read; RC read & clearable */
+#define DSR_DPS                 (1<<1) /* RC; device protect status
+                                        * 0 - not protected 1 - locked */
+#define DSR_PSS                 (1<<2) /* R; program suspend status;
+                                        * 0-prog in progress/completed,
+                                        * 1- prog suspended */
+#define DSR_VPPS                (1<<3) /* RC; 0-Vpp OK, * 1-Vpp low */
+#define DSR_PROGRAM_STATUS      (1<<4) /* RC; 0-successful, 1-error */
+#define DSR_ERASE_STATUS        (1<<5) /* RC; erase or blank check status;
+                                        * 0-success erase/blank check,
+                                        * 1 blank check error */
+#define DSR_ESS                 (1<<6) /* R; erase suspend status;
+                                        * 0-erase in progress/complete,
+                                        * 1 erase suspended */
+#define DSR_READY_STATUS        (1<<7) /* R; Device status
+                                        * 0-busy,
+                                        * 1-ready */
+#define DSR_RPS                 (0x3<<8) /* RC;  region program status
+                                        * 00 - Success,
+                                        * 01-re-program attempt in region with
+                                        * object mode data,
+                                        * 10-object mode program w attempt in
+                                        * region with control mode data
+                                        * 11-attempt to program invalid half
+                                        * with 0x41 command */
+#define DSR_AOS                 (1<<12) /* RC; 1- AO related failure */
+#define DSR_AVAILABLE           (1<<15) /* R; Device availbility
+                                        * 1 - Device available
+                                        * 0 - not available */
+
+/* The superset of all possible error bits in DSR */
+#define DSR_ERR                 0x133A
+
+static inline void send_pfow_command(struct map_info *map,
+                                unsigned long cmd_code, unsigned long adr,
+                                unsigned long len, map_word *datum)
+{
+        int bits_per_chip = map_bankwidth(map) * 8;
+        int chipnum;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        chipnum = adr >> lpddr->chipshift;
+
+        map_write(map, CMD(cmd_code), map->pfow_base + PFOW_COMMAND_CODE);
+        map_write(map, CMD(adr & ((1<<bits_per_chip) - 1)),
+                                map->pfow_base + PFOW_COMMAND_ADDRESS_L);
+        map_write(map, CMD(adr>>bits_per_chip),
+                                map->pfow_base + PFOW_COMMAND_ADDRESS_H);
+        if (len) {
+                map_write(map, CMD(len & ((1<<bits_per_chip) - 1)),
+                                        map->pfow_base + PFOW_DATA_COUNT_L);
+                map_write(map, CMD(len>>bits_per_chip),
+                                        map->pfow_base + PFOW_DATA_COUNT_H);
+        }
+        if (datum)
+                map_write(map, *datum, map->pfow_base + PFOW_COMMAND_DATA);
+
+        /* Command execution start */
+        map_write(map, CMD(LPDDR_START_EXECUTION),
+                        map->pfow_base + PFOW_COMMAND_EXECUTE);
+}
+
+static inline void print_drs_error(unsigned dsr)
+{
+        int prog_status = (dsr & DSR_RPS) >> 8;
+
+        if (!(dsr & DSR_AVAILABLE))
+                printk(KERN_NOTICE"DSR.15: (0) Device not Available\n");
+        if (prog_status & 0x03)
+                printk(KERN_NOTICE"DSR.9,8: (11) Attempt to program invalid "
+                                                "half with 41h command\n");
+        else if (prog_status & 0x02)
+                printk(KERN_NOTICE"DSR.9,8: (10) Object Mode Program attempt "
+                                        "in region with Control Mode data\n");
+        else if (prog_status &  0x01)
+                printk(KERN_NOTICE"DSR.9,8: (01) Program attempt in region "
+                                                "with Object Mode data\n");
+        if (!(dsr & DSR_READY_STATUS))
+                printk(KERN_NOTICE"DSR.7: (0) Device is Busy\n");
+        if (dsr & DSR_ESS)
+                printk(KERN_NOTICE"DSR.6: (1) Erase Suspended\n");
+        if (dsr & DSR_ERASE_STATUS)
+                printk(KERN_NOTICE"DSR.5: (1) Erase/Blank check error\n");
+        if (dsr & DSR_PROGRAM_STATUS)
+                printk(KERN_NOTICE"DSR.4: (1) Program Error\n");
+        if (dsr & DSR_VPPS)
+                printk(KERN_NOTICE"DSR.3: (1) Vpp low detect, operation "
+                                        "aborted\n");
+        if (dsr & DSR_PSS)
+                printk(KERN_NOTICE"DSR.2: (1) Program suspended\n");
+        if (dsr & DSR_DPS)
+                printk(KERN_NOTICE"DSR.1: (1) Aborted Erase/Program attempt "
+                                        "on locked block\n");
+}
+#endif /* __LINUX_MTD_PFOW_H */
diff --git a/include/linux/mtd/physmap.h b/include/linux/mtd/physmap.h
index c8e63a5ee72..76f7cabf07d 100644
--- a/include/linux/mtd/physmap.h
+++ b/include/linux/mtd/physmap.h
@@ -24,6 +24,7 @@ struct physmap_flash_data {
         unsigned int            width;
         void                    (*set_vpp)(struct map_info *, int);
         unsigned int            nr_parts;
+        unsigned int            pfow_base;
         struct mtd_partition    *parts;
 };
 
diff --git a/include/linux/mtd/qinfo.h b/include/linux/mtd/qinfo.h
new file mode 100644
index 00000000000..7b3d487d8b3
--- /dev/null
+++ b/include/linux/mtd/qinfo.h
@@ -0,0 +1,91 @@
+#ifndef __LINUX_MTD_QINFO_H
+#define __LINUX_MTD_QINFO_H
+
+#include <linux/mtd/map.h>
+#include <linux/wait.h>
+#include <linux/spinlock.h>
+#include <linux/delay.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/flashchip.h>
+#include <linux/mtd/partitions.h>
+
+/* lpddr_private describes lpddr flash chip in memory map
+ * @ManufactId - Chip Manufacture ID
+ * @DevId - Chip Device ID
+ * @qinfo - pointer to qinfo records describing the chip
+ * @numchips - number of chips including virual RWW partitions
+ * @chipshift - Chip/partiton size 2^chipshift
+ * @chips - per-chip data structure
+ */
+struct lpddr_private {
+        uint16_t ManufactId;
+        uint16_t DevId;
+        struct qinfo_chip *qinfo;
+        int numchips;
+        unsigned long chipshift;
+        struct flchip chips[0];
+};
+
+/* qinfo_query_info structure contains request information for
+ * each qinfo record
+ * @major - major number of qinfo record
+ * @major - minor number of qinfo record
+ * @id_str - descriptive string to access the record
+ * @desc - detailed description for the qinfo record
+ */
+struct qinfo_query_info {
+        uint8_t major;
+        uint8_t minor;
+        char *id_str;
+        char *desc;
+};
+
+/*
+ * qinfo_chip structure contains necessary qinfo records data
+ * @DevSizeShift - Device size 2^n bytes
+ * @BufSizeShift - Program buffer size 2^n bytes
+ * @TotalBlocksNum - Total number of blocks
+ * @UniformBlockSizeShift - Uniform block size 2^UniformBlockSizeShift bytes
+ * @HWPartsNum - Number of hardware partitions
+ * @SuspEraseSupp - Suspend erase supported
+ * @SingleWordProgTime - Single word program 2^SingleWordProgTime u-sec
+ * @ProgBufferTime - Program buffer write 2^ProgBufferTime u-sec
+ * @BlockEraseTime - Block erase 2^BlockEraseTime m-sec
+ */
+struct qinfo_chip {
+        /* General device info */
+        uint16_t DevSizeShift;
+        uint16_t BufSizeShift;
+        /* Erase block information */
+        uint16_t TotalBlocksNum;
+        uint16_t UniformBlockSizeShift;
+        /* Partition information */
+        uint16_t HWPartsNum;
+        /* Optional features */
+        uint16_t SuspEraseSupp;
+        /* Operation typical time */
+        uint16_t SingleWordProgTime;
+        uint16_t ProgBufferTime;
+        uint16_t BlockEraseTime;
+};
+
+/* defines for fixup usage */
+#define LPDDR_MFR_ANY           0xffff
+#define LPDDR_ID_ANY            0xffff
+#define NUMONYX_MFGR_ID         0x0089
+#define R18_DEVICE_ID_1G        0x893c
+
+static inline map_word lpddr_build_cmd(u_long cmd, struct map_info *map)
+{
+        map_word val = { {0} };
+        val.x[0] = cmd;
+        return val;
+}
+
+#define CMD(x) lpddr_build_cmd(x, map)
+#define CMDVAL(cmd) cmd.x[0]
+
+struct mtd_info *lpddr_cmdset(struct map_info *);
+
+#endif
+
diff --git a/include/linux/mtd/sharpsl.h b/include/linux/mtd/sharpsl.h
new file mode 100644
index 00000000000..25f4d2a845c
--- /dev/null
+++ b/include/linux/mtd/sharpsl.h
@@ -0,0 +1,20 @@
+/*
+ * SharpSL NAND support
+ *
+ * Copyright (C) 2008 Dmitry Baryshkov
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/mtd/nand.h>
+#include <linux/mtd/nand_ecc.h>
+#include <linux/mtd/partitions.h>
+
+struct sharpsl_nand_platform_data {
+        struct nand_bbt_descr   *badblock_pattern;
+        struct nand_ecclayout   *ecc_layout;
+        struct mtd_partition    *partitions;
+        unsigned int            nr_partitions;
+};