ARM: memblock: use memblock to free memory into arm_bootmem_init()

Switch arm_bootmem_init() to use memblock instead of membank to
free memory into bootmem.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 25 insertions, 17 deletions

diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index f68c93bb1fde..8e1edbc6116f 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -148,14 +148,13 @@ static void __init find_limits(struct meminfo *mi,
         }
 }
 
-static void __init arm_bootmem_init(struct meminfo *mi,
-        unsigned long start_pfn, unsigned long end_pfn)
+static void __init arm_bootmem_init(unsigned long start_pfn,
+        unsigned long end_pfn)
 {
         struct memblock_region *reg;
         unsigned int boot_pages;
         phys_addr_t bitmap;
         pg_data_t *pgdat;
-        int i;
 
         /*
          * Allocate the bootmem bitmap page.  This must be in a region
@@ -173,22 +172,31 @@ static void __init arm_bootmem_init(struct meminfo *mi,
         pgdat = NODE_DATA(0);
         init_bootmem_node(pgdat, __phys_to_pfn(bitmap), start_pfn, end_pfn);
 
-        for_each_bank(i, mi) {
-                struct membank *bank = &mi->bank[i];
-                if (!bank->highmem)
-                        free_bootmem(bank_phys_start(bank), bank_phys_size(bank));
+        /* Free the lowmem regions from memblock into bootmem. */
+        for_each_memblock(memory, reg) {
+                unsigned long start = memblock_region_memory_base_pfn(reg);
+                unsigned long end = memblock_region_memory_end_pfn(reg);
+
+                if (end >= end_pfn)
+                        end = end_pfn;
+                if (start >= end)
+                        break;
+
+                free_bootmem(__pfn_to_phys(start), (end - start) << PAGE_SHIFT);
         }
 
-        /*
-         * Reserve the memblock reserved regions in bootmem.
-         */
+        /* Reserve the lowmem memblock reserved regions in bootmem. */
         for_each_memblock(reserved, reg) {
-                phys_addr_t start = memblock_region_reserved_base_pfn(reg);
-                phys_addr_t end = memblock_region_reserved_end_pfn(reg);
-                if (start >= start_pfn && end <= end_pfn)
-                        reserve_bootmem_node(pgdat, __pfn_to_phys(start),
-                                             (end - start) << PAGE_SHIFT,
-                                             BOOTMEM_DEFAULT);
+                unsigned long start = memblock_region_reserved_base_pfn(reg);
+                unsigned long end = memblock_region_reserved_end_pfn(reg);
+
+                if (end >= end_pfn)
+                        end = end_pfn;
+                if (start >= end)
+                        break;
+
+                reserve_bootmem(__pfn_to_phys(start),
+                                (end - start) << PAGE_SHIFT, BOOTMEM_DEFAULT);
         }
 }
 
@@ -316,7 +324,7 @@ void __init bootmem_init(void)
 
         find_limits(mi, &min, &max_low, &max_high);
 
-        arm_bootmem_init(mi, min, max_low);
+        arm_bootmem_init(min, max_low);
 
         /*
          * Sparsemem tries to allocate bootmem in memory_present(),