aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mm/mmu.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mm/mmu.c')
-rw-r--r--arch/arm/mm/mmu.c29
1 files changed, 28 insertions, 1 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 91547196915..69852003675 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -600,7 +600,7 @@ static void __init create_36bit_mapping(struct map_desc *md,
* offsets, and we take full advantage of sections and
* supersections.
*/
-void __init create_mapping(struct map_desc *md)
+static void __init create_mapping(struct map_desc *md)
{
unsigned long phys, addr, length, end;
const struct mem_type *type;
@@ -1014,6 +1014,32 @@ static void __init kmap_init(void)
#endif
}
+static inline void map_memory_bank(struct membank *bank)
+{
+ struct map_desc map;
+
+ map.pfn = bank_pfn_start(bank);
+ map.virtual = __phys_to_virt(bank_phys_start(bank));
+ map.length = bank_phys_size(bank);
+ map.type = MT_MEMORY;
+
+ create_mapping(&map);
+}
+
+static void __init map_lowmem(void)
+{
+ struct meminfo *mi = &meminfo;
+ int i;
+
+ /* Map all the lowmem memory banks. */
+ for (i = 0; i < mi->nr_banks; i++) {
+ struct membank *bank = &mi->bank[i];
+
+ if (!bank->highmem)
+ map_memory_bank(bank);
+ }
+}
+
static int __init meminfo_cmp(const void *_a, const void *_b)
{
const struct membank *a = _a, *b = _b;
@@ -1034,6 +1060,7 @@ void __init paging_init(struct machine_desc *mdesc)
build_mem_type_table();
sanity_check_meminfo();
prepare_page_table();
+ map_lowmem();
bootmem_init();
devicemaps_init(mdesc);
kmap_init();