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| author | H. Peter Anvin <hpa@zytor.com> | 2007-10-16 04:13:22 +0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2007-10-17 04:38:31 +0400 |
| commit | 30c826451d3e5bbc6e11bba0e7fee5d2f49d9b75 (patch) | |
| tree | 61abd11d1703673ff21227d42ed4b07d85dd0290 /arch/x86/kernel/head64.c | |
| parent | 2b0460b534f383eca744eb8fff66ec9f57e702b9 (diff) | |
| download | linux-30c826451d3e5bbc6e11bba0e7fee5d2f49d9b75.tar.xz | |
[x86] remove uses of magic macros for boot_params access
Instead of using magic macros for boot_params access, simply use the
boot_params structure.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/kernel/head64.c')
| -rw-r--r-- | arch/x86/kernel/head64.c | 20 |
1 files changed, 4 insertions, 16 deletions
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 8561f626edad..a7eee0a4751d 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -14,7 +14,6 @@ #include <asm/processor.h> #include <asm/proto.h> #include <asm/smp.h> -#include <asm/bootsetup.h> #include <asm/setup.h> #include <asm/desc.h> #include <asm/pgtable.h> @@ -36,26 +35,15 @@ static void __init clear_bss(void) (unsigned long) __bss_stop - (unsigned long) __bss_start); } -#define NEW_CL_POINTER 0x228 /* Relative to real mode data */ -#define OLD_CL_MAGIC_ADDR 0x20 -#define OLD_CL_MAGIC 0xA33F -#define OLD_CL_OFFSET 0x22 - static void __init copy_bootdata(char *real_mode_data) { - unsigned long new_data; char * command_line; - memcpy(x86_boot_params, real_mode_data, BOOT_PARAM_SIZE); - new_data = *(u32 *) (x86_boot_params + NEW_CL_POINTER); - if (!new_data) { - if (OLD_CL_MAGIC != *(u16 *)(real_mode_data + OLD_CL_MAGIC_ADDR)) { - return; - } - new_data = __pa(real_mode_data) + *(u16 *)(real_mode_data + OLD_CL_OFFSET); + memcpy(&boot_params, real_mode_data, sizeof boot_params); + if (boot_params.hdr.cmd_line_ptr) { + command_line = __va(boot_params.hdr.cmd_line_ptr); + memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE); } - command_line = __va(new_data); - memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE); } void __init x86_64_start_kernel(char * real_mode_data) |