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| author |   Russell King <rmk@dyn-67.arm.linux.org.uk> | 2006-12-11 22:29:16 +0000 |
|---|---|---|
| committer |   Russell King <rmk+kernel@arm.linux.org.uk> | 2006-12-11 22:29:16 +0000 |
| commit | f06b97ffd1ed7a96d5022d52f795fba8483afb75 (patch) | |
| tree | 9240f07751edf59f666066cca098ef51053be016 | |
| parent | [ARM] Add sys_*at syscalls (diff) | |
| download | linux-dev-f06b97ffd1ed7a96d5022d52f795fba8483afb75.tar.xz linux-dev-f06b97ffd1ed7a96d5022d52f795fba8483afb75.zip | |
[ARM] Clean up KERNEL_RAM_ADDR
Clean up the KERNEL_RAM_ADDR stuff in arch/arm/kernel/head.S to
make it clearer what's referring to what. In doing so, remove
the usage of __virt_to_phys(), which is not guaranteed to be
something that the assembler can parse.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/kernel/head.S | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index bda0748ffb00..d994561816a1 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -22,30 +22,31 @@ #include <asm/thread_info.h> #include <asm/system.h> -#define KERNEL_RAM_ADDR (PAGE_OFFSET + TEXT_OFFSET) +#define KERNEL_RAM_VADDR (PAGE_OFFSET + TEXT_OFFSET) +#define KERNEL_RAM_PADDR (PHYS_OFFSET + TEXT_OFFSET) /* * swapper_pg_dir is the virtual address of the initial page table. - * We place the page tables 16K below KERNEL_RAM_ADDR. Therefore, we must - * make sure that KERNEL_RAM_ADDR is correctly set. Currently, we expect + * We place the page tables 16K below KERNEL_RAM_VADDR. Therefore, we must + * make sure that KERNEL_RAM_VADDR is correctly set. Currently, we expect * the least significant 16 bits to be 0x8000, but we could probably - * relax this restriction to KERNEL_RAM_ADDR >= PAGE_OFFSET + 0x4000. + * relax this restriction to KERNEL_RAM_VADDR >= PAGE_OFFSET + 0x4000. */ -#if (KERNEL_RAM_ADDR & 0xffff) != 0x8000 -#error KERNEL_RAM_ADDR must start at 0xXXXX8000 +#if (KERNEL_RAM_VADDR & 0xffff) != 0x8000 +#error KERNEL_RAM_VADDR must start at 0xXXXX8000 #endif .globl swapper_pg_dir - .equ swapper_pg_dir, KERNEL_RAM_ADDR - 0x4000 + .equ swapper_pg_dir, KERNEL_RAM_VADDR - 0x4000 .macro pgtbl, rd - ldr \rd, =(__virt_to_phys(KERNEL_RAM_ADDR - 0x4000)) + ldr \rd, =(KERNEL_RAM_PADDR - 0x4000) .endm #ifdef CONFIG_XIP_KERNEL #define TEXTADDR XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR) #else -#define TEXTADDR KERNEL_RAM_ADDR +#define TEXTADDR KERNEL_RAM_VADDR #endif /* |