36 files changed, 179 insertions, 333 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index ce64b7f66328..03551fafb1fd 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1101,11 +1101,6 @@ source "arch/arm/firmware/Kconfig"
 
 source arch/arm/mm/Kconfig
 
-config ARM_NR_BANKS
-        int
-        default 16 if ARCH_EP93XX
-        default 8
-
 config IWMMXT
         bool "Enable iWMMXt support" if !CPU_PJ4
         depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
diff --git a/arch/arm/boot/compressed/atags_to_fdt.c b/arch/arm/boot/compressed/atags_to_fdt.c
index d1153c8a765a..9448aa0c6686 100644
--- a/arch/arm/boot/compressed/atags_to_fdt.c
+++ b/arch/arm/boot/compressed/atags_to_fdt.c
@@ -7,6 +7,8 @@
 #define do_extend_cmdline 0
 #endif
 
+#define NR_BANKS 16
+
 static int node_offset(void *fdt, const char *node_path)
 {
         int offset = fdt_path_offset(fdt, node_path);
diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h
index 17a3fa2979e8..c43473afde8a 100644
--- a/arch/arm/include/asm/mach/arch.h
+++ b/arch/arm/include/asm/mach/arch.h
@@ -14,7 +14,6 @@
 #include <linux/reboot.h>
 
 struct tag;
-struct meminfo;
 struct pt_regs;
 struct smp_operations;
 #ifdef CONFIG_SMP
@@ -47,8 +46,7 @@ struct machine_desc {
         enum reboot_mode        reboot_mode;    /* default restart mode */
         struct smp_operations   *smp;           /* SMP operations       */
         bool                    (*smp_init)(void);
-        void                    (*fixup)(struct tag *, char **,
-                                         struct meminfo *);
+        void                    (*fixup)(struct tag *, char **);
         void                    (*init_meminfo)(void);
         void                    (*reserve)(void);/* reserve mem blocks  */
         void                    (*map_io)(void);/* IO mapping function  */
diff --git a/arch/arm/include/asm/memblock.h b/arch/arm/include/asm/memblock.h
index c2f5102ae659..bf47a6c110a2 100644
--- a/arch/arm/include/asm/memblock.h
+++ b/arch/arm/include/asm/memblock.h
@@ -1,10 +1,9 @@
 #ifndef _ASM_ARM_MEMBLOCK_H
 #define _ASM_ARM_MEMBLOCK_H
 
-struct meminfo;
 struct machine_desc;
 
-void arm_memblock_init(struct meminfo *, const struct machine_desc *);
+void arm_memblock_init(const struct machine_desc *);
 phys_addr_t arm_memblock_steal(phys_addr_t size, phys_addr_t align);
 
 #endif
diff --git a/arch/arm/include/asm/setup.h b/arch/arm/include/asm/setup.h
index 8d6a089dfb76..e0adb9f1bf94 100644
--- a/arch/arm/include/asm/setup.h
+++ b/arch/arm/include/asm/setup.h
@@ -21,34 +21,6 @@
 #define __tagtable(tag, fn) \
 static const struct tagtable __tagtable_##fn __tag = { tag, fn }
 
-/*
- * Memory map description
- */
-#define NR_BANKS        CONFIG_ARM_NR_BANKS
-
-struct membank {
-        phys_addr_t start;
-        phys_addr_t size;
-        unsigned int highmem;
-};
-
-struct meminfo {
-        int nr_banks;
-        struct membank bank[NR_BANKS];
-};
-
-extern struct meminfo meminfo;
-
-#define for_each_bank(iter,mi)                          \
-        for (iter = 0; iter < (mi)->nr_banks; iter++)
-
-#define bank_pfn_start(bank)    __phys_to_pfn((bank)->start)
-#define bank_pfn_end(bank)      __phys_to_pfn((bank)->start + (bank)->size)
-#define bank_pfn_size(bank)     ((bank)->size >> PAGE_SHIFT)
-#define bank_phys_start(bank)   (bank)->start
-#define bank_phys_end(bank)     ((bank)->start + (bank)->size)
-#define bank_phys_size(bank)    (bank)->size
-
 extern int arm_add_memory(u64 start, u64 size);
 extern void early_print(const char *str, ...);
 extern void dump_machine_table(void);
diff --git a/arch/arm/kernel/atags_parse.c b/arch/arm/kernel/atags_parse.c
index 8c14de8180c0..7807ef58a2ab 100644
--- a/arch/arm/kernel/atags_parse.c
+++ b/arch/arm/kernel/atags_parse.c
@@ -22,6 +22,7 @@
 #include <linux/fs.h>
 #include <linux/root_dev.h>
 #include <linux/screen_info.h>
+#include <linux/memblock.h>
 
 #include <asm/setup.h>
 #include <asm/system_info.h>
@@ -222,10 +223,10 @@ setup_machine_tags(phys_addr_t __atags_pointer, unsigned int machine_nr)
         }
 
         if (mdesc->fixup)
-                mdesc->fixup(tags, &from, &meminfo);
+                mdesc->fixup(tags, &from);
 
         if (tags->hdr.tag == ATAG_CORE) {
-                if (meminfo.nr_banks != 0)
+                if (memblock_phys_mem_size())
                         squash_mem_tags(tags);
                 save_atags(tags);
                 parse_tags(tags);
diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c
index c7419a585ddc..679a83d470cc 100644
--- a/arch/arm/kernel/devtree.c
+++ b/arch/arm/kernel/devtree.c
@@ -27,11 +27,6 @@
 #include <asm/mach/arch.h>
 #include <asm/mach-types.h>
 
-void __init early_init_dt_add_memory_arch(u64 base, u64 size)
-{
-        arm_add_memory(base, size);
-}
-
 void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
 {
         return memblock_virt_alloc(size, align);
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 50e198c1e9c8..6d78ba47ea5b 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -628,15 +628,8 @@ void __init dump_machine_table(void)
 
 int __init arm_add_memory(u64 start, u64 size)
 {
-        struct membank *bank = &meminfo.bank[meminfo.nr_banks];
         u64 aligned_start;
 
-        if (meminfo.nr_banks >= NR_BANKS) {
-                pr_crit("NR_BANKS too low, ignoring memory at 0x%08llx\n",
-                        (long long)start);
-                return -EINVAL;
-        }
-
         /*
          * Ensure that start/size are aligned to a page boundary.
          * Size is appropriately rounded down, start is rounded up.
@@ -677,17 +670,17 @@ int __init arm_add_memory(u64 start, u64 size)
                 aligned_start = PHYS_OFFSET;
         }
 
-        bank->start = aligned_start;
-        bank->size = size & ~(phys_addr_t)(PAGE_SIZE - 1);
+        start = aligned_start;
+        size = size & ~(phys_addr_t)(PAGE_SIZE - 1);
 
         /*
          * Check whether this memory region has non-zero size or
          * invalid node number.
          */
-        if (bank->size == 0)
+        if (size == 0)
                 return -EINVAL;
 
-        meminfo.nr_banks++;
+        memblock_add(start, size);
         return 0;
 }
 
@@ -695,6 +688,7 @@ int __init arm_add_memory(u64 start, u64 size)
  * Pick out the memory size.  We look for mem=size@start,
  * where start and size are "size[KkMm]"
  */
+
 static int __init early_mem(char *p)
 {
         static int usermem __initdata = 0;
@@ -709,7 +703,8 @@ static int __init early_mem(char *p)
          */
         if (usermem == 0) {
                 usermem = 1;
-                meminfo.nr_banks = 0;
+                memblock_remove(memblock_start_of_DRAM(),
+                        memblock_end_of_DRAM() - memblock_start_of_DRAM());
         }
 
         start = PHYS_OFFSET;
@@ -854,13 +849,6 @@ static void __init reserve_crashkernel(void)
 static inline void reserve_crashkernel(void) {}
 #endif /* CONFIG_KEXEC */
 
-static int __init meminfo_cmp(const void *_a, const void *_b)
-{
-        const struct membank *a = _a, *b = _b;
-        long cmp = bank_pfn_start(a) - bank_pfn_start(b);
-        return cmp < 0 ? -1 : cmp > 0 ? 1 : 0;
-}
-
 void __init hyp_mode_check(void)
 {
 #ifdef CONFIG_ARM_VIRT_EXT
@@ -903,12 +891,10 @@ void __init setup_arch(char **cmdline_p)
 
         parse_early_param();
 
-        sort(&meminfo.bank, meminfo.nr_banks, sizeof(meminfo.bank[0]), meminfo_cmp, NULL);
-
         early_paging_init(mdesc, lookup_processor_type(read_cpuid_id()));
         setup_dma_zone(mdesc);
         sanity_check_meminfo();
-        arm_memblock_init(&meminfo, mdesc);
+        arm_memblock_init(mdesc);
 
         paging_init(mdesc);
         request_standard_resources(mdesc);
diff --git a/arch/arm/mach-clps711x/board-clep7312.c b/arch/arm/mach-clps711x/board-clep7312.c
index 221b9de32dd6..94a7add88a3f 100644
--- a/arch/arm/mach-clps711x/board-clep7312.c
+++ b/arch/arm/mach-clps711x/board-clep7312.c
@@ -18,6 +18,7 @@
 #include <linux/init.h>
 #include <linux/types.h>
 #include <linux/string.h>
+#include <linux/memblock.h>
 
 #include <asm/setup.h>
 #include <asm/mach-types.h>
@@ -26,11 +27,9 @@
 #include "common.h"
 
 static void __init
-fixup_clep7312(struct tag *tags, char **cmdline, struct meminfo *mi)
+fixup_clep7312(struct tag *tags, char **cmdline)
 {
-        mi->nr_banks=1;
-        mi->bank[0].start = 0xc0000000;
-        mi->bank[0].size = 0x01000000;
+        memblock_add(0xc0000000, 0x01000000);
 }
 
 MACHINE_START(CLEP7212, "Cirrus Logic 7212/7312")
diff --git a/arch/arm/mach-clps711x/board-edb7211.c b/arch/arm/mach-clps711x/board-edb7211.c
index 077609841f14..f9828f89972a 100644
--- a/arch/arm/mach-clps711x/board-edb7211.c
+++ b/arch/arm/mach-clps711x/board-edb7211.c
@@ -16,6 +16,7 @@
 #include <linux/interrupt.h>
 #include <linux/backlight.h>
 #include <linux/platform_device.h>
+#include <linux/memblock.h>
 
 #include <linux/mtd/physmap.h>
 #include <linux/mtd/partitions.h>
@@ -133,7 +134,7 @@ static void __init edb7211_reserve(void)
 }
 
 static void __init
-fixup_edb7211(struct tag *tags, char **cmdline, struct meminfo *mi)
+fixup_edb7211(struct tag *tags, char **cmdline)
 {
         /*
          * Bank start addresses are not present in the information
@@ -143,11 +144,8 @@ fixup_edb7211(struct tag *tags, char **cmdline, struct meminfo *mi)
          * Banks sizes _are_ present in the param block, but we're
          * not using that information yet.
          */
-        mi->bank[0].start = 0xc0000000;
-        mi->bank[0].size = SZ_8M;
-        mi->bank[1].start = 0xc1000000;
-        mi->bank[1].size = SZ_8M;
-        mi->nr_banks = 2;
+        memblock_add(0xc0000000, SZ_8M);
+        memblock_add(0xc1000000, SZ_8M);
 }
 
 static void __init edb7211_init(void)
diff --git a/arch/arm/mach-clps711x/board-p720t.c b/arch/arm/mach-clps711x/board-p720t.c
index 67b733744ed7..0cf0e51e6546 100644
--- a/arch/arm/mach-clps711x/board-p720t.c
+++ b/arch/arm/mach-clps711x/board-p720t.c
@@ -295,7 +295,7 @@ static struct generic_bl_info p720t_lcd_backlight_pdata = {
 };
 
 static void __init
-fixup_p720t(struct tag *tag, char **cmdline, struct meminfo *mi)
+fixup_p720t(struct tag *tag, char **cmdline)
 {
         /*
          * Our bootloader doesn't setup any tags (yet).
diff --git a/arch/arm/mach-footbridge/cats-hw.c b/arch/arm/mach-footbridge/cats-hw.c
index da0415094856..8f05489671b7 100644
--- a/arch/arm/mach-footbridge/cats-hw.c
+++ b/arch/arm/mach-footbridge/cats-hw.c
@@ -76,7 +76,7 @@ __initcall(cats_hw_init);
  * hard reboots fail on early boards.
  */
 static void __init
-fixup_cats(struct tag *tags, char **cmdline, struct meminfo *mi)
+fixup_cats(struct tag *tags, char **cmdline)
 {
 #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
         screen_info.orig_video_lines  = 25;
diff --git a/arch/arm/mach-footbridge/netwinder-hw.c b/arch/arm/mach-footbridge/netwinder-hw.c
index eb1fa5c84723..cdee08c6d239 100644
--- a/arch/arm/mach-footbridge/netwinder-hw.c
+++ b/arch/arm/mach-footbridge/netwinder-hw.c
@@ -620,7 +620,7 @@ __initcall(nw_hw_init);
  * the parameter page.
  */
 static void __init
-fixup_netwinder(struct tag *tags, char **cmdline, struct meminfo *mi)
+fixup_netwinder(struct tag *tags, char **cmdline)
 {
 #ifdef CONFIG_ISAPNP
         extern int isapnp_disable;
diff --git a/arch/arm/mach-msm/board-halibut.c b/arch/arm/mach-msm/board-halibut.c
index a77529887cbc..61bfe584a9d7 100644
--- a/arch/arm/mach-msm/board-halibut.c
+++ b/arch/arm/mach-msm/board-halibut.c
@@ -83,11 +83,6 @@ static void __init halibut_init(void)
         platform_add_devices(devices, ARRAY_SIZE(devices));
 }
 
-static void __init halibut_fixup(struct tag *tags, char **cmdline,
-                                 struct meminfo *mi)
-{
-}
-
 static void __init halibut_map_io(void)
 {
         msm_map_common_io();
@@ -100,7 +95,6 @@ static void __init halibut_init_late(void)
 
 MACHINE_START(HALIBUT, "Halibut Board (QCT SURF7200A)")
         .atag_offset    = 0x100,
-        .fixup          = halibut_fixup,
         .map_io         = halibut_map_io,
         .init_early     = halibut_init_early,
         .init_irq       = halibut_init_irq,
diff --git a/arch/arm/mach-msm/board-mahimahi.c b/arch/arm/mach-msm/board-mahimahi.c
index 7d9981cb400e..873c3ca3cd7e 100644
--- a/arch/arm/mach-msm/board-mahimahi.c
+++ b/arch/arm/mach-msm/board-mahimahi.c
@@ -22,6 +22,7 @@
 #include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
+#include <linux/memblock.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -52,16 +53,10 @@ static void __init mahimahi_init(void)
         platform_add_devices(devices, ARRAY_SIZE(devices));
 }
 
-static void __init mahimahi_fixup(struct tag *tags, char **cmdline,
-                                  struct meminfo *mi)
+static void __init mahimahi_fixup(struct tag *tags, char **cmdline)
 {
-        mi->nr_banks = 2;
-        mi->bank[0].start = PHYS_OFFSET;
-        mi->bank[0].node = PHYS_TO_NID(PHYS_OFFSET);
-        mi->bank[0].size = (219*1024*1024);
-        mi->bank[1].start = MSM_HIGHMEM_BASE;
-        mi->bank[1].node = PHYS_TO_NID(MSM_HIGHMEM_BASE);
-        mi->bank[1].size = MSM_HIGHMEM_SIZE;
+        memblock_add(PHYS_OFFSET, 219*SZ_1M);
+        memblock_add(MSM_HIGHMEM_BASE, MSM_HIGHMEM_SIZE);
 }
 
 static void __init mahimahi_map_io(void)
diff --git a/arch/arm/mach-msm/board-msm7x30.c b/arch/arm/mach-msm/board-msm7x30.c
index 46de789ad3ae..b621b23a5ecc 100644
--- a/arch/arm/mach-msm/board-msm7x30.c
+++ b/arch/arm/mach-msm/board-msm7x30.c
@@ -40,8 +40,7 @@
 #include "proc_comm.h"
 #include "common.h"
 
-static void __init msm7x30_fixup(struct tag *tag, char **cmdline,
-                struct meminfo *mi)
+static void __init msm7x30_fixup(struct tag *tag, char **cmdline)
 {
         for (; tag->hdr.size; tag = tag_next(tag))
                 if (tag->hdr.tag == ATAG_MEM && tag->u.mem.start == 0x200000) {
diff --git a/arch/arm/mach-msm/board-sapphire.c b/arch/arm/mach-msm/board-sapphire.c
index 327605174d63..e50967926dcd 100644
--- a/arch/arm/mach-msm/board-sapphire.c
+++ b/arch/arm/mach-msm/board-sapphire.c
@@ -35,6 +35,7 @@
 
 #include <linux/mtd/nand.h>
 #include <linux/mtd/partitions.h>
+#include <linux/memblock.h>
 
 #include "gpio_chip.h"
 #include "board-sapphire.h"
@@ -74,22 +75,18 @@ static struct map_desc sapphire_io_desc[] __initdata = {
         }
 };
 
-static void __init sapphire_fixup(struct tag *tags, char **cmdline,
-                                  struct meminfo *mi)
+static void __init sapphire_fixup(struct tag *tags, char **cmdline)
 {
         int smi_sz = parse_tag_smi((const struct tag *)tags);
 
-        mi->nr_banks = 1;
-        mi->bank[0].start = PHYS_OFFSET;
-        mi->bank[0].node = PHYS_TO_NID(PHYS_OFFSET);
         if (smi_sz == 32) {
-                mi->bank[0].size = (84*1024*1024);
+                memblock_add(PHYS_OFFSET, 84*SZ_1M);
         } else if (smi_sz == 64) {
-                mi->bank[0].size = (101*1024*1024);
+                memblock_add(PHYS_OFFSET, 101*SZ_1M);
         } else {
+                memblock_add(PHYS_OFFSET, 101*SZ_1M);
                 /* Give a default value when not get smi size */
                 smi_sz = 64;
-                mi->bank[0].size = (101*1024*1024);
         }
 }
 
diff --git a/arch/arm/mach-msm/board-trout.c b/arch/arm/mach-msm/board-trout.c
index 015d544aa017..58826cfab6b0 100644
--- a/arch/arm/mach-msm/board-trout.c
+++ b/arch/arm/mach-msm/board-trout.c
@@ -19,6 +19,7 @@
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/clkdev.h>
+#include <linux/memblock.h>
 
 #include <asm/system_info.h>
 #include <asm/mach-types.h>
@@ -55,12 +56,9 @@ static void __init trout_init_irq(void)
         msm_init_irq();
 }
 
-static void __init trout_fixup(struct tag *tags, char **cmdline,
-                               struct meminfo *mi)
+static void __init trout_fixup(struct tag *tags, char **cmdline)
 {
-        mi->nr_banks = 1;
-        mi->bank[0].start = PHYS_OFFSET;
-        mi->bank[0].size = (101*1024*1024);
+        memblock_add(PHYS_OFFSET, 101*SZ_1M);
 }
 
 static void __init trout_init(void)
diff --git a/arch/arm/mach-orion5x/common.c b/arch/arm/mach-orion5x/common.c
index 3f1de1111e0f..6bbb7b55c6d1 100644
--- a/arch/arm/mach-orion5x/common.c
+++ b/arch/arm/mach-orion5x/common.c
@@ -365,8 +365,7 @@ void orion5x_restart(enum reboot_mode mode, const char *cmd)
  * Many orion-based systems have buggy bootloader implementations.
  * This is a common fixup for bogus memory tags.
  */
-void __init tag_fixup_mem32(struct tag *t, char **from,
-                            struct meminfo *meminfo)
+void __init tag_fixup_mem32(struct tag *t, char **from)
 {
         for (; t->hdr.size; t = tag_next(t))
                 if (t->hdr.tag == ATAG_MEM &&
diff --git a/arch/arm/mach-orion5x/common.h b/arch/arm/mach-orion5x/common.h
index f565f9944af2..175ec4ca8df6 100644
--- a/arch/arm/mach-orion5x/common.h
+++ b/arch/arm/mach-orion5x/common.h
@@ -71,9 +71,8 @@ void edmini_v2_init(void);
 static inline void edmini_v2_init(void) {};
 #endif
 
-struct meminfo;
 struct tag;
-extern void __init tag_fixup_mem32(struct tag *, char **, struct meminfo *);
+extern void __init tag_fixup_mem32(struct tag *, char **);
 
 /*****************************************************************************
  * Helpers to access Orion registers
diff --git a/arch/arm/mach-pxa/cm-x300.c b/arch/arm/mach-pxa/cm-x300.c
index 584439bfa59f..4d3588d26c2a 100644
--- a/arch/arm/mach-pxa/cm-x300.c
+++ b/arch/arm/mach-pxa/cm-x300.c
@@ -837,8 +837,7 @@ static void __init cm_x300_init(void)
         cm_x300_init_bl();
 }
 
-static void __init cm_x300_fixup(struct tag *tags, char **cmdline,
-                                 struct meminfo *mi)
+static void __init cm_x300_fixup(struct tag *tags, char **cmdline)
 {
         /* Make sure that mi->bank[0].start = PHYS_ADDR */
         for (; tags->hdr.size; tags = tag_next(tags))
diff --git a/arch/arm/mach-pxa/corgi.c b/arch/arm/mach-pxa/corgi.c
index 57d60542f982..91dd1c7cdbcd 100644
--- a/arch/arm/mach-pxa/corgi.c
+++ b/arch/arm/mach-pxa/corgi.c
@@ -34,6 +34,7 @@
 #include <linux/input/matrix_keypad.h>
 #include <linux/gpio_keys.h>
 #include <linux/module.h>
+#include <linux/memblock.h>
 #include <video/w100fb.h>
 
 #include <asm/setup.h>
@@ -753,16 +754,13 @@ static void __init corgi_init(void)
         platform_add_devices(devices, ARRAY_SIZE(devices));
 }
 
-static void __init fixup_corgi(struct tag *tags, char **cmdline,
-                               struct meminfo *mi)
+static void __init fixup_corgi(struct tag *tags, char **cmdline)
 {
         sharpsl_save_param();
-        mi->nr_banks=1;
-        mi->bank[0].start = 0xa0000000;
         if (machine_is_corgi())
-                mi->bank[0].size = (32*1024*1024);
+                memblock_add(0xa0000000, SZ_32M);
         else
-                mi->bank[0].size = (64*1024*1024);
+                memblock_add(0xa0000000, SZ_64M);
 }
 
 #ifdef CONFIG_MACH_CORGI
diff --git a/arch/arm/mach-pxa/eseries.c b/arch/arm/mach-pxa/eseries.c
index 8280ebcaab9f..cfb864173ce3 100644
--- a/arch/arm/mach-pxa/eseries.c
+++ b/arch/arm/mach-pxa/eseries.c
@@ -21,6 +21,7 @@
 #include <linux/mtd/nand.h>
 #include <linux/mtd/partitions.h>
 #include <linux/usb/gpio_vbus.h>
+#include <linux/memblock.h>
 
 #include <video/w100fb.h>
 
@@ -41,14 +42,12 @@
 #include "clock.h"
 
 /* Only e800 has 128MB RAM */
-void __init eseries_fixup(struct tag *tags, char **cmdline, struct meminfo *mi)
+void __init eseries_fixup(struct tag *tags, char **cmdline)
 {
-        mi->nr_banks=1;
-        mi->bank[0].start = 0xa0000000;
         if (machine_is_e800())
-                mi->bank[0].size = (128*1024*1024);
+                memblock_add(0xa0000000, SZ_128M);
         else
-                mi->bank[0].size = (64*1024*1024);
+                memblock_add(0xa0000000, SZ_64M);
 }
 
 struct gpio_vbus_mach_info e7xx_udc_info = {
diff --git a/arch/arm/mach-pxa/poodle.c b/arch/arm/mach-pxa/poodle.c
index aedf053a1de5..131991629116 100644
--- a/arch/arm/mach-pxa/poodle.c
+++ b/arch/arm/mach-pxa/poodle.c
@@ -29,6 +29,7 @@
 #include <linux/spi/ads7846.h>
 #include <linux/spi/pxa2xx_spi.h>
 #include <linux/mtd/sharpsl.h>
+#include <linux/memblock.h>
 
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
@@ -456,13 +457,10 @@ static void __init poodle_init(void)
         poodle_init_spi();
 }
 
-static void __init fixup_poodle(struct tag *tags, char **cmdline,
-                                struct meminfo *mi)
+static void __init fixup_poodle(struct tag *tags, char **cmdline)
 {
         sharpsl_save_param();
-        mi->nr_banks=1;
-        mi->bank[0].start = 0xa0000000;
-        mi->bank[0].size = (32*1024*1024);
+        memblock_add(0xa0000000, SZ_32M);
 }
 
 MACHINE_START(POODLE, "SHARP Poodle")
diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c
index 0b11c1af51c4..840c3a48e720 100644
--- a/arch/arm/mach-pxa/spitz.c
+++ b/arch/arm/mach-pxa/spitz.c
@@ -32,6 +32,7 @@
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/reboot.h>
+#include <linux/memblock.h>
 
 #include <asm/setup.h>
 #include <asm/mach-types.h>
@@ -971,13 +972,10 @@ static void __init spitz_init(void)
         spitz_i2c_init();
 }
 
-static void __init spitz_fixup(struct tag *tags, char **cmdline,
-                               struct meminfo *mi)
+static void __init spitz_fixup(struct tag *tags, char **cmdline)
 {
         sharpsl_save_param();
-        mi->nr_banks = 1;
-        mi->bank[0].start = 0xa0000000;
-        mi->bank[0].size = (64*1024*1024);
+        memblock_add(0xa0000000, SZ_64M);
 }
 
 #ifdef CONFIG_MACH_SPITZ
diff --git a/arch/arm/mach-pxa/tosa.c b/arch/arm/mach-pxa/tosa.c
index ef5557b807ed..c158a6e3e0aa 100644
--- a/arch/arm/mach-pxa/tosa.c
+++ b/arch/arm/mach-pxa/tosa.c
@@ -37,6 +37,7 @@
 #include <linux/i2c/pxa-i2c.h>
 #include <linux/usb/gpio_vbus.h>
 #include <linux/reboot.h>
+#include <linux/memblock.h>
 
 #include <asm/setup.h>
 #include <asm/mach-types.h>
@@ -960,13 +961,10 @@ static void __init tosa_init(void)
         platform_add_devices(devices, ARRAY_SIZE(devices));
 }
 
-static void __init fixup_tosa(struct tag *tags, char **cmdline,
-                              struct meminfo *mi)
+static void __init fixup_tosa(struct tag *tags, char **cmdline)
 {
         sharpsl_save_param();
-        mi->nr_banks=1;
-        mi->bank[0].start = 0xa0000000;
-        mi->bank[0].size = (64*1024*1024);
+        memblock_add(0xa0000000, SZ_64M);
 }
 
 MACHINE_START(TOSA, "SHARP Tosa")
diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index 1d5ee5c9a1dc..c2fae3a5aad8 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -31,6 +31,7 @@
 #include <linux/amba/mmci.h>
 #include <linux/gfp.h>
 #include <linux/mtd/physmap.h>
+#include <linux/memblock.h>
 
 #include <mach/hardware.h>
 #include <asm/irq.h>
@@ -370,19 +371,15 @@ void __init realview_timer_init(unsigned int timer_irq)
 /*
  * Setup the memory banks.
  */
-void realview_fixup(struct tag *tags, char **from, struct meminfo *meminfo)
+void realview_fixup(struct tag *tags, char **from)
 {
         /*
          * Most RealView platforms have 512MB contiguous RAM at 0x70000000.
          * Half of this is mirrored at 0.
          */
 #ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
-        meminfo->bank[0].start = 0x70000000;
-        meminfo->bank[0].size = SZ_512M;
-        meminfo->nr_banks = 1;
+        memblock_add(0x70000000, SZ_512M);
 #else
-        meminfo->bank[0].start = 0;
-        meminfo->bank[0].size = SZ_256M;
-        meminfo->nr_banks = 1;
+        memblock_add(0, SZ_256M);
 #endif
 }
diff --git a/arch/arm/mach-realview/core.h b/arch/arm/mach-realview/core.h
index 602ca5ec52c5..844946da3c66 100644
--- a/arch/arm/mach-realview/core.h
+++ b/arch/arm/mach-realview/core.h
@@ -51,8 +51,7 @@ extern int realview_flash_register(struct resource *res, u32 num);
 extern int realview_eth_register(const char *name, struct resource *res);
 extern int realview_usb_register(struct resource *res);
 extern void realview_init_early(void);
-extern void realview_fixup(struct tag *tags, char **from,
-                           struct meminfo *meminfo);
+extern void realview_fixup(struct tag *tags, char **from);
 
 extern struct smp_operations realview_smp_ops;
 extern void realview_cpu_die(unsigned int cpu);
diff --git a/arch/arm/mach-realview/realview_pb1176.c b/arch/arm/mach-realview/realview_pb1176.c
index c5eade76461b..6abf6a037b9e 100644
--- a/arch/arm/mach-realview/realview_pb1176.c
+++ b/arch/arm/mach-realview/realview_pb1176.c
@@ -32,6 +32,7 @@
 #include <linux/irqchip/arm-gic.h>
 #include <linux/platform_data/clk-realview.h>
 #include <linux/reboot.h>
+#include <linux/memblock.h>
 
 #include <mach/hardware.h>
 #include <asm/irq.h>
@@ -339,15 +340,12 @@ static void realview_pb1176_restart(enum reboot_mode mode, const char *cmd)
         dsb();
 }
 
-static void realview_pb1176_fixup(struct tag *tags, char **from,
-                                  struct meminfo *meminfo)
+static void realview_pb1176_fixup(struct tag *tags, char **from)
 {
         /*
          * RealView PB1176 only has 128MB of RAM mapped at 0.
          */
-        meminfo->bank[0].start = 0;
-        meminfo->bank[0].size = SZ_128M;
-        meminfo->nr_banks = 1;
+        memblock_add(0, SZ_128M);
 }
 
 static void __init realview_pb1176_init(void)
diff --git a/arch/arm/mach-realview/realview_pbx.c b/arch/arm/mach-realview/realview_pbx.c
index 9d75493e3f0c..60d322ad9db4 100644
--- a/arch/arm/mach-realview/realview_pbx.c
+++ b/arch/arm/mach-realview/realview_pbx.c
@@ -29,6 +29,7 @@
 #include <linux/irqchip/arm-gic.h>
 #include <linux/platform_data/clk-realview.h>
 #include <linux/reboot.h>
+#include <linux/memblock.h>
 
 #include <asm/irq.h>
 #include <asm/mach-types.h>
@@ -325,23 +326,19 @@ static void __init realview_pbx_timer_init(void)
         realview_pbx_twd_init();
 }
 
-static void realview_pbx_fixup(struct tag *tags, char **from,
-                               struct meminfo *meminfo)
+static void realview_pbx_fixup(struct tag *tags, char **from)
 {
 #ifdef CONFIG_SPARSEMEM
         /*
          * Memory configuration with SPARSEMEM enabled on RealView PBX (see
          * asm/mach/memory.h for more information).
          */
-        meminfo->bank[0].start = 0;
-        meminfo->bank[0].size = SZ_256M;
-        meminfo->bank[1].start = 0x20000000;
-        meminfo->bank[1].size = SZ_512M;
-        meminfo->bank[2].start = 0x80000000;
-        meminfo->bank[2].size = SZ_256M;
-        meminfo->nr_banks = 3;
+
+        memblock_add(0, SZ_256M);
+        memblock_add(0x20000000, SZ_512M);
+        memblock_add(0x80000000, SZ_256M);
 #else
-        realview_fixup(tags, from, meminfo);
+        realview_fixup(tags, from);
 #endif
 }
 
diff --git a/arch/arm/mach-s3c24xx/mach-smdk2413.c b/arch/arm/mach-s3c24xx/mach-smdk2413.c
index 233fe52d2015..a03c855ee854 100644
--- a/arch/arm/mach-s3c24xx/mach-smdk2413.c
+++ b/arch/arm/mach-s3c24xx/mach-smdk2413.c
@@ -22,6 +22,7 @@
 #include <linux/serial_s3c.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
+#include <linux/memblock.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -93,13 +94,10 @@ static struct platform_device *smdk2413_devices[] __initdata = {
         &s3c2412_device_dma,
 };
 
-static void __init smdk2413_fixup(struct tag *tags, char **cmdline,
-                                  struct meminfo *mi)
+static void __init smdk2413_fixup(struct tag *tags, char **cmdline)
 {
         if (tags != phys_to_virt(S3C2410_SDRAM_PA + 0x100)) {
-                mi->nr_banks=1;
-                mi->bank[0].start = 0x30000000;
-                mi->bank[0].size = SZ_64M;
+                memblock_add(0x30000000, SZ_64M);
         }
 }
 
diff --git a/arch/arm/mach-s3c24xx/mach-vstms.c b/arch/arm/mach-s3c24xx/mach-vstms.c
index 40868c0e0a68..a79af7843aed 100644
--- a/arch/arm/mach-s3c24xx/mach-vstms.c
+++ b/arch/arm/mach-s3c24xx/mach-vstms.c
@@ -23,6 +23,7 @@
 #include <linux/mtd/nand.h>
 #include <linux/mtd/nand_ecc.h>
 #include <linux/mtd/partitions.h>
+#include <linux/memblock.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -129,13 +130,10 @@ static struct platform_device *vstms_devices[] __initdata = {
         &s3c2412_device_dma,
 };
 
-static void __init vstms_fixup(struct tag *tags, char **cmdline,
-                               struct meminfo *mi)
+static void __init vstms_fixup(struct tag *tags, char **cmdline)
 {
         if (tags != phys_to_virt(S3C2410_SDRAM_PA + 0x100)) {
-                mi->nr_banks=1;
-                mi->bank[0].start = 0x30000000;
-                mi->bank[0].size = SZ_64M;
+                memblock_add(0x30000000, SZ_64M);
         }
 }
 
diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c
index 8443a27bca2f..7dd894ece9ae 100644
--- a/arch/arm/mach-sa1100/assabet.c
+++ b/arch/arm/mach-sa1100/assabet.c
@@ -531,7 +531,7 @@ static void __init get_assabet_scr(void)
 }
 
 static void __init
-fixup_assabet(struct tag *tags, char **cmdline, struct meminfo *mi)
+fixup_assabet(struct tag *tags, char **cmdline)
 {
         /* This must be done before any call to machine_has_neponset() */
         map_sa1100_gpio_regs();
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 2a77ba8796ae..c8ab21dc2178 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -81,24 +81,21 @@ __tagtable(ATAG_INITRD2, parse_tag_initrd2);
  * initialization functions, as well as show_mem() for the skipping
  * of holes in the memory map.  It is populated by arm_add_memory().
  */
-struct meminfo meminfo;
-
 void show_mem(unsigned int filter)
 {
         int free = 0, total = 0, reserved = 0;
-        int shared = 0, cached = 0, slab = 0, i;
-        struct meminfo * mi = &meminfo;
+        int shared = 0, cached = 0, slab = 0;
+        struct memblock_region *reg;
 
         printk("Mem-info:\n");
         show_free_areas(filter);
 
-        for_each_bank (i, mi) {
-                struct membank *bank = &mi->bank[i];
+        for_each_memblock (memory, reg) {
                 unsigned int pfn1, pfn2;
                 struct page *page, *end;
 
-                pfn1 = bank_pfn_start(bank);
-                pfn2 = bank_pfn_end(bank);
+                pfn1 = memblock_region_memory_base_pfn(reg);
+                pfn2 = memblock_region_memory_end_pfn(reg);
 
                 page = pfn_to_page(pfn1);
                 end  = pfn_to_page(pfn2 - 1) + 1;
@@ -115,8 +112,9 @@ void show_mem(unsigned int filter)
                                 free++;
                         else
                                 shared += page_count(page) - 1;
-                        page++;
-                } while (page < end);
+                        pfn1++;
+                        page = pfn_to_page(pfn1);
+                } while (pfn1 < pfn2);
         }
 
         printk("%d pages of RAM\n", total);
@@ -130,16 +128,9 @@ void show_mem(unsigned int filter)
 static void __init find_limits(unsigned long *min, unsigned long *max_low,
                                unsigned long *max_high)
 {
-        struct meminfo *mi = &meminfo;
-        int i;
-
-        /* This assumes the meminfo array is properly sorted */
-        *min = bank_pfn_start(&mi->bank[0]);
-        for_each_bank (i, mi)
-                if (mi->bank[i].highmem)
-                                break;
-        *max_low = bank_pfn_end(&mi->bank[i - 1]);
-        *max_high = bank_pfn_end(&mi->bank[mi->nr_banks - 1]);
+        *max_low = PFN_DOWN(memblock_get_current_limit());
+        *min = PFN_UP(memblock_start_of_DRAM());
+        *max_high = PFN_DOWN(memblock_end_of_DRAM());
 }
 
 #ifdef CONFIG_ZONE_DMA
@@ -274,14 +265,8 @@ phys_addr_t __init arm_memblock_steal(phys_addr_t size, phys_addr_t align)
         return phys;
 }
 
-void __init arm_memblock_init(struct meminfo *mi,
-        const struct machine_desc *mdesc)
+void __init arm_memblock_init(const struct machine_desc *mdesc)
 {
-        int i;
-
-        for (i = 0; i < mi->nr_banks; i++)
-                memblock_add(mi->bank[i].start, mi->bank[i].size);
-
         /* Register the kernel text, kernel data and initrd with memblock. */
 #ifdef CONFIG_XIP_KERNEL
         memblock_reserve(__pa(_sdata), _end - _sdata);
@@ -413,54 +398,53 @@ free_memmap(unsigned long start_pfn, unsigned long end_pfn)
 /*
  * The mem_map array can get very big.  Free the unused area of the memory map.
  */
-static void __init free_unused_memmap(struct meminfo *mi)
+static void __init free_unused_memmap(void)
 {
-        unsigned long bank_start, prev_bank_end = 0;
-        unsigned int i;
+        unsigned long start, prev_end = 0;
+        struct memblock_region *reg;
 
         /*
          * This relies on each bank being in address order.
          * The banks are sorted previously in bootmem_init().
          */
-        for_each_bank(i, mi) {
-                struct membank *bank = &mi->bank[i];
-
-                bank_start = bank_pfn_start(bank);
+        for_each_memblock(memory, reg) {
+                start = memblock_region_memory_base_pfn(reg);
 
 #ifdef CONFIG_SPARSEMEM
                 /*
                  * Take care not to free memmap entries that don't exist
                  * due to SPARSEMEM sections which aren't present.
                  */
-                bank_start = min(bank_start,
-                                 ALIGN(prev_bank_end, PAGES_PER_SECTION));
+                start = min(start,
+                                 ALIGN(prev_end, PAGES_PER_SECTION));
 #else
                 /*
                  * Align down here since the VM subsystem insists that the
                  * memmap entries are valid from the bank start aligned to
                  * MAX_ORDER_NR_PAGES.
                  */
-                bank_start = round_down(bank_start, MAX_ORDER_NR_PAGES);
+                start = round_down(start, MAX_ORDER_NR_PAGES);
 #endif
                 /*
                  * If we had a previous bank, and there is a space
                  * between the current bank and the previous, free it.
                  */
-                if (prev_bank_end && prev_bank_end < bank_start)
-                        free_memmap(prev_bank_end, bank_start);
+                if (prev_end && prev_end < start)
+                        free_memmap(prev_end, start);
 
                 /*
                  * Align up here since the VM subsystem insists that the
                  * memmap entries are valid from the bank end aligned to
                  * MAX_ORDER_NR_PAGES.
                  */
-                prev_bank_end = ALIGN(bank_pfn_end(bank), MAX_ORDER_NR_PAGES);
+                prev_end = ALIGN(memblock_region_memory_end_pfn(reg),
+                                 MAX_ORDER_NR_PAGES);
         }
 
 #ifdef CONFIG_SPARSEMEM
-        if (!IS_ALIGNED(prev_bank_end, PAGES_PER_SECTION))
-                free_memmap(prev_bank_end,
-                            ALIGN(prev_bank_end, PAGES_PER_SECTION));
+        if (!IS_ALIGNED(prev_end, PAGES_PER_SECTION))
+                free_memmap(prev_end,
+                            ALIGN(prev_end, PAGES_PER_SECTION));
 #endif
 }
 
@@ -536,7 +520,7 @@ void __init mem_init(void)
         set_max_mapnr(pfn_to_page(max_pfn) - mem_map);
 
         /* this will put all unused low memory onto the freelists */
-        free_unused_memmap(&meminfo);
+        free_unused_memmap();
         free_all_bootmem();
 
 #ifdef CONFIG_SA1111
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index a991ce2f18d4..82ea2b3fb9b5 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -1062,74 +1062,47 @@ phys_addr_t arm_lowmem_limit __initdata = 0;
 void __init sanity_check_meminfo(void)
 {
         phys_addr_t memblock_limit = 0;
-        int i, j, highmem = 0;
+        int highmem = 0;
         phys_addr_t vmalloc_limit = __pa(vmalloc_min - 1) + 1;
+        struct memblock_region *reg;
 
-        for (i = 0, j = 0; i < meminfo.nr_banks; i++) {
-                struct membank *bank = &meminfo.bank[j];
-                phys_addr_t size_limit;
-
-                *bank = meminfo.bank[i];
-                size_limit = bank->size;
+        for_each_memblock(memory, reg) {
+                phys_addr_t block_start = reg->base;
+                phys_addr_t block_end = reg->base + reg->size;
+                phys_addr_t size_limit = reg->size;
 
-                if (bank->start >= vmalloc_limit)
+                if (reg->base >= vmalloc_limit)
                         highmem = 1;
                 else
-                        size_limit = vmalloc_limit - bank->start;
+                        size_limit = vmalloc_limit - reg->base;
 
-                bank->highmem = highmem;
 
-#ifdef CONFIG_HIGHMEM
-                /*
-                 * Split those memory banks which are partially overlapping
-                 * the vmalloc area greatly simplifying things later.
-                 */
-                if (!highmem && bank->size > size_limit) {
-                        if (meminfo.nr_banks >= NR_BANKS) {
-                                printk(KERN_CRIT "NR_BANKS too low, "
-                                                 "ignoring high memory\n");
-                        } else {
-                                memmove(bank + 1, bank,
-                                        (meminfo.nr_banks - i) * sizeof(*bank));
-                                meminfo.nr_banks++;
-                                i++;
-                                bank[1].size -= size_limit;
-                                bank[1].start = vmalloc_limit;
-                                bank[1].highmem = highmem = 1;
-                                j++;
+                if (!IS_ENABLED(CONFIG_HIGHMEM) || cache_is_vipt_aliasing()) {
+
+                        if (highmem) {
+                                pr_notice("Ignoring RAM at %pa-%pa (!CONFIG_HIGHMEM)\n",
+                                        &block_start, &block_end);
+                                memblock_remove(reg->base, reg->size);
+                                continue;
                         }
-                        bank->size = size_limit;
-                }
-#else
-                /*
-                 * Highmem banks not allowed with !CONFIG_HIGHMEM.
-                 */
-                if (highmem) {
-                        printk(KERN_NOTICE "Ignoring RAM at %.8llx-%.8llx "
-                               "(!CONFIG_HIGHMEM).\n",
-                               (unsigned long long)bank->start,
-                               (unsigned long long)bank->start + bank->size - 1);
-                        continue;
-                }
 
-                /*
-                 * Check whether this memory bank would partially overlap
-                 * the vmalloc area.
-                 */
-                if (bank->size > size_limit) {
-                        printk(KERN_NOTICE "Truncating RAM at %.8llx-%.8llx "
-                               "to -%.8llx (vmalloc region overlap).\n",
-                               (unsigned long long)bank->start,
-                               (unsigned long long)bank->start + bank->size - 1,
-                               (unsigned long long)bank->start + size_limit - 1);
-                        bank->size = size_limit;
+                        if (reg->size > size_limit) {
+                                phys_addr_t overlap_size = reg->size - size_limit;
+
+                                pr_notice("Truncating RAM at %pa-%pa to -%pa",
+                                      &block_start, &block_end, &vmalloc_limit);
+                                memblock_remove(vmalloc_limit, overlap_size);
+                                block_end = vmalloc_limit;
+                        }
                 }
-#endif
-                if (!bank->highmem) {
-                        phys_addr_t bank_end = bank->start + bank->size;
 
-                        if (bank_end > arm_lowmem_limit)
-                                arm_lowmem_limit = bank_end;
+                if (!highmem) {
+                        if (block_end > arm_lowmem_limit) {
+                                if (reg->size > size_limit)
+                                        arm_lowmem_limit = vmalloc_limit;
+                                else
+                                        arm_lowmem_limit = block_end;
+                        }
 
                         /*
                          * Find the first non-section-aligned page, and point
@@ -1145,35 +1118,15 @@ void __init sanity_check_meminfo(void)
                          * occurs before any free memory is mapped.
                          */
                         if (!memblock_limit) {
-                                if (!IS_ALIGNED(bank->start, SECTION_SIZE))
-                                        memblock_limit = bank->start;
-                                else if (!IS_ALIGNED(bank_end, SECTION_SIZE))
-                                        memblock_limit = bank_end;
+                                if (!IS_ALIGNED(block_start, SECTION_SIZE))
+                                        memblock_limit = block_start;
+                                else if (!IS_ALIGNED(block_end, SECTION_SIZE))
+                                        memblock_limit = arm_lowmem_limit;
                         }
-                }
-                j++;
-        }
-#ifdef CONFIG_HIGHMEM
-        if (highmem) {
-                const char *reason = NULL;
 
-                if (cache_is_vipt_aliasing()) {
-                        /*
-                         * Interactions between kmap and other mappings
-                         * make highmem support with aliasing VIPT caches
-                         * rather difficult.
-                         */
-                        reason = "with VIPT aliasing cache";
-                }
-                if (reason) {
-                        printk(KERN_CRIT "HIGHMEM is not supported %s, ignoring high memory\n",
-                                reason);
-                        while (j > 0 && meminfo.bank[j - 1].highmem)
-                                j--;
                 }
         }
-#endif
-        meminfo.nr_banks = j;
+
         high_memory = __va(arm_lowmem_limit - 1) + 1;
 
         /*
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 55764a7ef1f0..da1874f9f8cf 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -88,30 +88,35 @@ static unsigned long irbar_read(void)
 void __init sanity_check_meminfo_mpu(void)
 {
         int i;
-        struct membank *bank = meminfo.bank;
         phys_addr_t phys_offset = PHYS_OFFSET;
         phys_addr_t aligned_region_size, specified_mem_size, rounded_mem_size;
-
-        /* Initially only use memory continuous from PHYS_OFFSET */
-        if (bank_phys_start(&bank[0]) != phys_offset)
-                panic("First memory bank must be contiguous from PHYS_OFFSET");
-
-        /* Banks have already been sorted by start address */
-        for (i = 1; i < meminfo.nr_banks; i++) {
-                if (bank[i].start <= bank_phys_end(&bank[0]) &&
-                    bank_phys_end(&bank[i]) > bank_phys_end(&bank[0])) {
-                        bank[0].size = bank_phys_end(&bank[i]) - bank[0].start;
+        struct memblock_region *reg;
+        bool first = true;
+        phys_addr_t mem_start;
+        phys_addr_t mem_end;
+
+        for_each_memblock(memory, reg) {
+                if (first) {
+                        /*
+                         * Initially only use memory continuous from
+                         * PHYS_OFFSET */
+                        if (reg->base != phys_offset)
+                                panic("First memory bank must be contiguous from PHYS_OFFSET");
+
+                        mem_start = reg->base;
+                        mem_end = reg->base + reg->size;
+                        specified_mem_size = reg->size;
+                        first = false;
                 } else {
-                        pr_notice("Ignoring RAM after 0x%.8lx. "
-                        "First non-contiguous (ignored) bank start: 0x%.8lx\n",
-                                (unsigned long)bank_phys_end(&bank[0]),
-                                (unsigned long)bank_phys_start(&bank[i]));
-                        break;
+                        /*
+                         * memblock auto merges contiguous blocks, remove
+                         * all blocks afterwards
+                         */
+                        pr_notice("Ignoring RAM after %pa, memory at %pa ignored\n",
+                                  &mem_start, &reg->base);
+                        memblock_remove(reg->base, reg->size);
                 }
         }
-        /* All contiguous banks are now merged in to the first bank */
-        meminfo.nr_banks = 1;
-        specified_mem_size = bank[0].size;
 
         /*
          * MPU has curious alignment requirements: Size must be power of 2, and
@@ -128,23 +133,24 @@ void __init sanity_check_meminfo_mpu(void)
          */
         aligned_region_size = (phys_offset - 1) ^ (phys_offset);
         /* Find the max power-of-two sized region that fits inside our bank */
-        rounded_mem_size = (1 <<  __fls(bank[0].size)) - 1;
+        rounded_mem_size = (1 <<  __fls(specified_mem_size)) - 1;
 
         /* The actual region size is the smaller of the two */
         aligned_region_size = aligned_region_size < rounded_mem_size
                                 ? aligned_region_size + 1
                                 : rounded_mem_size + 1;
 
-        if (aligned_region_size != specified_mem_size)
-                pr_warn("Truncating memory from 0x%.8lx to 0x%.8lx (MPU region constraints)",
-                                (unsigned long)specified_mem_size,
-                                (unsigned long)aligned_region_size);
+        if (aligned_region_size != specified_mem_size) {
+                pr_warn("Truncating memory from %pa to %pa (MPU region constraints)",
+                                &specified_mem_size, &aligned_region_size);
+                memblock_remove(mem_start + aligned_region_size,
+                                specified_mem_size - aligned_round_size);
+
+                mem_end = mem_start + aligned_region_size;
+        }
 
-        meminfo.bank[0].size = aligned_region_size;
-        pr_debug("MPU Region from 0x%.8lx size 0x%.8lx (end 0x%.8lx))\n",
-                (unsigned long)phys_offset,
-                (unsigned long)aligned_region_size,
-                (unsigned long)bank_phys_end(&bank[0]));
+        pr_debug("MPU Region from %pa size %pa (end %pa))\n",
+                &phys_offset, &aligned_region_size, &mem_end);
 
 }
 
@@ -292,7 +298,7 @@ void __init sanity_check_meminfo(void)
 {
         phys_addr_t end;
         sanity_check_meminfo_mpu();
-        end = bank_phys_end(&meminfo.bank[meminfo.nr_banks - 1]);
+        end = memblock_end_of_DRAM();
         high_memory = __va(end - 1) + 1;
 }