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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2006-12-11 22:29:16 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-12-11 22:29:16 +0000
commitf06b97ffd1ed7a96d5022d52f795fba8483afb75 (patch)
tree9240f07751edf59f666066cca098ef51053be016 /arch/arm/kernel/head.S
parentbca0b8e75f6b7cf52cf52c967286b72d84f9b37e (diff)
downloadop-kernel-dev-f06b97ffd1ed7a96d5022d52f795fba8483afb75.zip
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[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>
Diffstat (limited to 'arch/arm/kernel/head.S')
-rw-r--r--arch/arm/kernel/head.S19
1 files changed, 10 insertions, 9 deletions
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index bda0748..d994561 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
/*
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