1 files changed, 178 insertions, 0 deletions

diff --git a/drivers/mtd/maps/pb1xxx-flash.c b/drivers/mtd/maps/pb1xxx-flash.c
new file mode 100644
index 000000000000..06e731540552
--- /dev/null
+++ b/drivers/mtd/maps/pb1xxx-flash.c
@@ -0,0 +1,178 @@
+/*
+ * Flash memory access on Alchemy Pb1xxx boards
+ * 
+ * (C) 2001 Pete Popov <ppopov@mvista.com>
+ * 
+ * $Id: pb1xxx-flash.c,v 1.14 2004/11/04 13:24:15 gleixner Exp $
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/io.h>
+
+#ifdef  DEBUG_RW
+#define DBG(x...)       printk(x)
+#else
+#define DBG(x...)       
+#endif
+
+#ifdef CONFIG_MIPS_PB1000
+
+#define WINDOW_ADDR 0x1F800000
+#define WINDOW_SIZE 0x800000
+
+static struct mtd_partition pb1xxx_partitions[] = {
+        {
+                .name         =  "yamon env",
+                .size         =   0x00020000,
+                .offset       =   0,
+                .mask_flags   =   MTD_WRITEABLE},
+        {
+                .name         =   "User FS",
+                .size         =   0x003e0000,
+                .offset       =   0x20000,},
+        {
+                .name         =   "boot code",
+                .size         =   0x100000,
+                .offset       =   0x400000,
+                .mask_flags   =   MTD_WRITEABLE},
+        {
+                .name         =   "raw/kernel",
+                .size         =   0x300000,
+                .offset       =   0x500000}
+};
+
+#elif defined(CONFIG_MIPS_PB1500) || defined(CONFIG_MIPS_PB1100)
+
+#if defined(CONFIG_MTD_PB1500_BOOT) && defined(CONFIG_MTD_PB1500_USER)
+/* both 32MB banks will be used. Combine the first 32MB bank and the
+ * first 28MB of the second bank together into a single jffs/jffs2
+ * partition.
+ */
+#define WINDOW_ADDR 0x1C000000
+#define WINDOW_SIZE 0x4000000
+static struct mtd_partition pb1xxx_partitions[] = {
+        {
+                .name         =   "User FS",
+                .size         =   0x3c00000,
+                .offset       =   0x0000000
+        },{
+                .name         =   "yamon",
+                .size         =   0x0100000,
+                .offset       =   0x3c00000,
+                .mask_flags   =   MTD_WRITEABLE
+        },{
+                .name         =   "raw kernel",
+                .size         =   0x02c0000,
+                .offset       =   0x3d00000
+        }
+};
+#elif defined(CONFIG_MTD_PB1500_BOOT) && !defined(CONFIG_MTD_PB1500_USER)
+#define WINDOW_ADDR 0x1E000000
+#define WINDOW_SIZE 0x2000000
+static struct mtd_partition pb1xxx_partitions[] = {
+        {
+                .name         =   "User FS",
+                .size         =   0x1c00000,
+                .offset       =   0x0000000
+        },{
+                .name         =   "yamon",
+                .size         =   0x0100000,
+                .offset       =   0x1c00000,
+                .mask_flags   =   MTD_WRITEABLE
+        },{
+                .name         =   "raw kernel",
+                .size         =   0x02c0000,
+                .offset       =   0x1d00000
+        }
+};
+#elif !defined(CONFIG_MTD_PB1500_BOOT) && defined(CONFIG_MTD_PB1500_USER)
+#define WINDOW_ADDR 0x1C000000
+#define WINDOW_SIZE 0x2000000
+static struct mtd_partition pb1xxx_partitions[] = {
+        {
+                .name         =   "User FS",
+                .size         =    0x1e00000,
+                .offset       =    0x0000000
+        },{
+                .name         =    "raw kernel",
+                .size         =    0x0200000,
+                .offset       =    0x1e00000,
+        }
+};
+#else
+#error MTD_PB1500 define combo error /* should never happen */
+#endif
+#else
+#error Unsupported board
+#endif
+
+#define NAME            "Pb1x00 Linux Flash"
+#define PADDR           WINDOW_ADDR
+#define BUSWIDTH        4
+#define SIZE            WINDOW_SIZE
+#define PARTITIONS      4
+
+static struct map_info pb1xxx_mtd_map = {
+        .name           = NAME,
+        .size           = SIZE,
+        .bankwidth      = BUSWIDTH,
+        .phys           = PADDR,
+};
+
+static struct mtd_info *pb1xxx_mtd;
+
+int __init pb1xxx_mtd_init(void)
+{
+        struct mtd_partition *parts;
+        int nb_parts = 0;
+        char *part_type;
+        
+        /*
+         * Static partition definition selection
+         */
+        part_type = "static";
+        parts = pb1xxx_partitions;
+        nb_parts = ARRAY_SIZE(pb1xxx_partitions);
+
+        /*
+         * Now let's probe for the actual flash.  Do it here since
+         * specific machine settings might have been set above.
+         */
+        printk(KERN_NOTICE "Pb1xxx flash: probing %d-bit flash bus\n", 
+                        BUSWIDTH*8);
+        pb1xxx_mtd_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
+
+        simple_map_init(&pb1xxx_mtd_map);
+
+        pb1xxx_mtd = do_map_probe("cfi_probe", &pb1xxx_mtd_map);
+        if (!pb1xxx_mtd) return -ENXIO;
+        pb1xxx_mtd->owner = THIS_MODULE;
+
+        add_mtd_partitions(pb1xxx_mtd, parts, nb_parts);
+        return 0;
+}
+
+static void __exit pb1xxx_mtd_cleanup(void)
+{
+        if (pb1xxx_mtd) {
+                del_mtd_partitions(pb1xxx_mtd);
+                map_destroy(pb1xxx_mtd);
+                iounmap((void *) pb1xxx_mtd_map.virt);
+        }
+}
+
+module_init(pb1xxx_mtd_init);
+module_exit(pb1xxx_mtd_cleanup);
+
+MODULE_AUTHOR("Pete Popov");
+MODULE_DESCRIPTION("Pb1xxx CFI map driver");
+MODULE_LICENSE("GPL");