LXR linux/arch/x86/include/asm/bios

   1#ifndef _ASM_X86_BIOS_EBDA_H
   2#define _ASM_X86_BIOS_EBDA_H
   3
   4#include <asm/io.h>
   5
   6/*
   7 * there is a real-mode segmented pointer pointing to the
   8 * 4K EBDA area at 0x40E.
   9 */
  10static 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
  17void reserve_ebda_region(void);
  18
  19#ifdef CONFIG_X86_CHECK_BIOS_CORRUPTION
  20/*
  21 * This is obviously not a great place for this, but we want to be
  22 * able to scatter it around anywhere in the kernel.
  23 */
  24void check_for_bios_corruption(void);
  25void start_periodic_check_for_corruption(void);
  26#else
  27static inline void check_for_bios_corruption(void)
  28{
  29}
  30
  31static inline void start_periodic_check_for_corruption(void)
  32{
  33}
  34#endif
  35
  36#endif /* _ASM_X86_BIOS_EBDA_H */
  37