diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-12-12 11:53:43 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-12-12 11:53:43 +0100 |
commit | e18d7af85296cb6999aae171e8a9f8612bea5ae0 (patch) | |
tree | 97a675ecc17bef2f710c50f5ea2a480df0e362c0 /arch/x86/include/asm/bios_ebda.h | |
parent | 3555105333ae55414d0fe051557bd7dc590f5255 (diff) | |
parent | 8b1fae4e4200388b64dd88065639413cb3f1051c (diff) |
Merge commit 'v2.6.28-rc8' into x86/mm
Diffstat (limited to 'arch/x86/include/asm/bios_ebda.h')
-rw-r--r-- | arch/x86/include/asm/bios_ebda.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/x86/include/asm/bios_ebda.h b/arch/x86/include/asm/bios_ebda.h new file mode 100644 index 00000000000..3c7521063d3 --- /dev/null +++ b/arch/x86/include/asm/bios_ebda.h @@ -0,0 +1,36 @@ +#ifndef _ASM_X86_BIOS_EBDA_H +#define _ASM_X86_BIOS_EBDA_H + +#include <asm/io.h> + +/* + * there is a real-mode segmented pointer pointing to the + * 4K EBDA area at 0x40E. + */ +static inline unsigned int get_bios_ebda(void) +{ + unsigned int address = *(unsigned short *)phys_to_virt(0x40E); + address <<= 4; + return address; /* 0 means none */ +} + +void reserve_ebda_region(void); + +#ifdef CONFIG_X86_CHECK_BIOS_CORRUPTION +/* + * This is obviously not a great place for this, but we want to be + * able to scatter it around anywhere in the kernel. + */ +void check_for_bios_corruption(void); +void start_periodic_check_for_corruption(void); +#else +static inline void check_for_bios_corruption(void) +{ +} + +static inline void start_periodic_check_for_corruption(void) +{ +} +#endif + +#endif /* _ASM_X86_BIOS_EBDA_H */ |