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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-11-28 15:39:02 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-11-28 15:39:02 +0000 |
| commit | 7ef4de17cc55a3c3b8d093743b1e3b845d8eba47 (patch) | |
| tree | adf87c996affbb6c42850d55cb34c0e5a2f6d340 /arch/arm/mach-footbridge | |
| parent | f412b09f4ed7c57f5b8935ed7d6fc786f402a629 (diff) | |
| parent | b5ee9002583fc14e6d45a04c18f208987a8fbced (diff) | |
Merge branch 'highmem' into devel
Conflicts:
arch/arm/mach-clps7500/include/mach/memory.h
Diffstat (limited to 'arch/arm/mach-footbridge')
| -rw-r--r-- | arch/arm/mach-footbridge/include/mach/memory.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mach-footbridge/include/mach/memory.h b/arch/arm/mach-footbridge/include/mach/memory.h index 6ae2f1a07ab..cb16e59d87b 100644 --- a/arch/arm/mach-footbridge/include/mach/memory.h +++ b/arch/arm/mach-footbridge/include/mach/memory.h @@ -30,9 +30,18 @@ extern unsigned long __virt_to_bus(unsigned long); extern unsigned long __bus_to_virt(unsigned long); #endif +#define __virt_to_bus __virt_to_bus +#define __bus_to_virt __bus_to_virt #elif defined(CONFIG_FOOTBRIDGE_HOST) +/* + * The footbridge is programmed to expose the system RAM at the corresponding + * address. So, if PAGE_OFFSET is 0xc0000000, RAM appears at 0xe0000000. + * If 0x80000000, then its exposed at 0xa0000000 on the bus. etc. + * The only requirement is that the RAM isn't placed at bus address 0 which + * would clash with VGA cards. + */ #define __virt_to_bus(x) ((x) - 0xe0000000) #define __bus_to_virt(x) ((x) + 0xe0000000) |