37 lines
794 B
C
37 lines
794 B
C
#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 */
|