diff options
Diffstat (limited to 'include/asm-x86/bios_ebda.h')
| -rw-r--r-- | include/asm-x86/bios_ebda.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/asm-x86/bios_ebda.h b/include/asm-x86/bios_ebda.h new file mode 100644 index 00000000000..9cbd9a668af --- /dev/null +++ b/include/asm-x86/bios_ebda.h @@ -0,0 +1,15 @@ +#ifndef _MACH_BIOS_EBDA_H +#define _MACH_BIOS_EBDA_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 */ +} + +#endif /* _MACH_BIOS_EBDA_H */ |