| Vegard Nossum | 77ef50a | 2008-06-18 17:08:48 +0200 | [diff] [blame^] | 1 | #ifndef ASM_X86__BIOS_EBDA_H |
| 2 | #define ASM_X86__BIOS_EBDA_H |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | |
| Akinobu Mita | 2c0903f | 2008-04-19 23:55:18 +0900 | [diff] [blame] | 4 | #include <asm/io.h> |
| 5 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | /* |
| 7 | * there is a real-mode segmented pointer pointing to the |
| 8 | * 4K EBDA area at 0x40E. |
| 9 | */ |
| 10 | static inline unsigned int get_bios_ebda(void) |
| 11 | { |
| 12 | unsigned int address = *(unsigned short *)phys_to_virt(0x40E); |
| 13 | address <<= 4; |
| 14 | return address; /* 0 means none */ |
| 15 | } |
| 16 | |
| Huang, Ying | 0c51a96 | 2008-06-02 14:26:23 +0800 | [diff] [blame] | 17 | void reserve_ebda_region(void); |
| 18 | |
| Vegard Nossum | 77ef50a | 2008-06-18 17:08:48 +0200 | [diff] [blame^] | 19 | #endif /* ASM_X86__BIOS_EBDA_H */ |