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authorStefan Roese <sr@denx.de>2008-07-10 01:09:23 +1000
committerJosh Boyer <jwboyer@linux.vnet.ibm.com>2008-07-09 14:13:01 -0400
commit2bf3016f89344d4cd8b2c96bbec2b642a2bde413 (patch)
treedd472d2d20ae41bc93c189ca141ea61ddae9826a /arch/powerpc/mm
parent3fa69dd57759cb45fa48bb70a055025d25a7e4e8 (diff)
downloadop-kernel-dev-2bf3016f89344d4cd8b2c96bbec2b642a2bde413.zip
op-kernel-dev-2bf3016f89344d4cd8b2c96bbec2b642a2bde413.tar.gz
powerpc: Fix problems with 32bit PPC's running with >= 4GB of RAM
This patch enables 32bit PPC's (with 36bit physical address space, e.g. IBM/AMCC PPC44x) to run with >= 4GB of RAM. Mostly its just replacing types (unsigned long -> phys_addr_t). Tested on an AMCC Katmai with 4GB of DDR2. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Diffstat (limited to 'arch/powerpc/mm')
-rw-r--r--arch/powerpc/mm/init_32.c4
-rw-r--r--arch/powerpc/mm/mem.c8
-rw-r--r--arch/powerpc/mm/mmu_decl.h4
3 files changed, 8 insertions, 8 deletions
diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c
index 4541859..388ceda 100644
--- a/arch/powerpc/mm/init_32.c
+++ b/arch/powerpc/mm/init_32.c
@@ -57,8 +57,8 @@
DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
-unsigned long total_memory;
-unsigned long total_lowmem;
+phys_addr_t total_memory;
+phys_addr_t total_lowmem;
phys_addr_t memstart_addr = (phys_addr_t)~0ull;
EXPORT_SYMBOL(memstart_addr);
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 776ba6a..1ca2235 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -330,7 +330,7 @@ static int __init mark_nonram_nosave(void)
void __init paging_init(void)
{
unsigned long total_ram = lmb_phys_mem_size();
- unsigned long top_of_ram = lmb_end_of_DRAM();
+ phys_addr_t top_of_ram = lmb_end_of_DRAM();
unsigned long max_zone_pfns[MAX_NR_ZONES];
#ifdef CONFIG_PPC32
@@ -349,10 +349,10 @@ void __init paging_init(void)
kmap_prot = PAGE_KERNEL;
#endif /* CONFIG_HIGHMEM */
- printk(KERN_DEBUG "Top of RAM: 0x%lx, Total RAM: 0x%lx\n",
- top_of_ram, total_ram);
+ printk(KERN_DEBUG "Top of RAM: 0x%llx, Total RAM: 0x%lx\n",
+ (u64)top_of_ram, total_ram);
printk(KERN_DEBUG "Memory hole size: %ldMB\n",
- (top_of_ram - total_ram) >> 20);
+ (long int)((top_of_ram - total_ram) >> 20));
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
#ifdef CONFIG_HIGHMEM
max_zone_pfns[ZONE_DMA] = lowmem_end_addr >> PAGE_SHIFT;
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index 46585b7..fab3cfa 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -49,8 +49,8 @@ extern unsigned int num_tlbcam_entries;
extern unsigned long ioremap_bot;
extern unsigned long __max_low_memory;
extern phys_addr_t __initial_memory_limit_addr;
-extern unsigned long total_memory;
-extern unsigned long total_lowmem;
+extern phys_addr_t total_memory;
+extern phys_addr_t total_lowmem;
extern phys_addr_t memstart_addr;
extern phys_addr_t lowmem_end_addr;
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