bios_ebda.h

来自「鼎力推荐！本程序是基于嵌入式LUNUX系统开发的源程序代码」· C头文件 代码 · 共 16 行

#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 */