summaryrefslogtreecommitdiffstats
path: root/arch/arm/mm/init.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mm/init.c')
-rw-r--r--arch/arm/mm/init.c81
1 files changed, 37 insertions, 44 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 928d596d9ab4..659c75d808dc 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -23,6 +23,7 @@
#include <linux/dma-contiguous.h>
#include <linux/sizes.h>
+#include <asm/cp15.h>
#include <asm/mach-types.h>
#include <asm/memblock.h>
#include <asm/prom.h>
@@ -36,6 +37,14 @@
#include "mm.h"
+#ifdef CONFIG_CPU_CP15_MMU
+unsigned long __init __clear_cr(unsigned long mask)
+{
+ cr_alignment = cr_alignment & ~mask;
+ return cr_alignment;
+}
+#endif
+
static phys_addr_t phys_initrd_start __initdata = 0;
static unsigned long phys_initrd_size __initdata = 0;
@@ -81,24 +90,21 @@ __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 +121,9 @@ 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 +137,9 @@ 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 +274,8 @@ 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);
@@ -412,54 +406,53 @@ 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
}
@@ -535,7 +528,7 @@ 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