system.h

来自「arm平台上的uclinux系统全部源代码」· C头文件 代码 · 共 42 行

/*
 * linux/include/asm-arm/arch-arc/system.h
 *
 * Copyright (c) 1996 Russell King and Dave Gilbert
 */
#ifndef __ASM_ARCH_SYSTEM_H
#define __ASM_ARCH_SYSTEM_H

#define cliIF()				\
	do {				\
	  unsigned long temp;		\
	  __asm__ __volatile__(		\
"	mov	%0, pc\n"		\
"	orr %0, %0, #0x0c000000\n"	\
"	teqp	%0, #0\n"		\
	  : "=r" (temp)	\
    : );	\
  } while(0)

extern __inline__ void arch_hard_reset (void)
{
	extern void ecard_reset (int card);

	/*
	 * Reset all expansion cards.
	 */
	ecard_reset (-1);

	/*
	 * copy branch instruction to reset location and call it
	 */
	*(unsigned long *)0 = *(unsigned long *)0x03800000;
	((void(*)(void))0)();

	/*
	 * If that didn't work, loop endlessly
	 */
	while (1);
}

#endif