source:
trunk/packages/xen-3.1/xen-3.1/xen/include/asm-x86/mach-default/bios_ebda.h
@
34
| Last change on this file since 34 was 34, checked in by hartmans, 17 years ago | |
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| File size: 344 bytes | |
| Line | |
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| 1 | #ifndef _MACH_BIOS_EBDA_H |
| 2 | #define _MACH_BIOS_EBDA_H |
| 3 | |
| 4 | /* |
| 5 | * there is a real-mode segmented pointer pointing to the |
| 6 | * 4K EBDA area at 0x40E. |
| 7 | */ |
| 8 | static inline unsigned int get_bios_ebda(void) |
| 9 | { |
| 10 | unsigned int address = *(unsigned short *)maddr_to_virt(0x40E); |
| 11 | address <<= 4; |
| 12 | return address; /* 0 means none */ |
| 13 | } |
| 14 | |
| 15 | #endif /* _MACH_BIOS_EBDA_H */ |
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