xref: /OK3568_Linux_fs/u-boot/arch/x86/cpu/x86_64/interrupts.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun  * (C) Copyright 2016 Google, Inc
3*4882a593Smuzhiyun  * Written by Simon Glass <sjg@chromium.org>
4*4882a593Smuzhiyun  *
5*4882a593Smuzhiyun  * SPDX-License-Identifier:	GPL-2.0+
6*4882a593Smuzhiyun  */
7*4882a593Smuzhiyun 
8*4882a593Smuzhiyun #include <common.h>
9*4882a593Smuzhiyun #include <asm/processor-flags.h>
10*4882a593Smuzhiyun 
enable_interrupts(void)11*4882a593Smuzhiyun void enable_interrupts(void)
12*4882a593Smuzhiyun {
13*4882a593Smuzhiyun 	asm("sti\n");
14*4882a593Smuzhiyun }
15*4882a593Smuzhiyun 
disable_interrupts(void)16*4882a593Smuzhiyun int disable_interrupts(void)
17*4882a593Smuzhiyun {
18*4882a593Smuzhiyun 	long flags;
19*4882a593Smuzhiyun 
20*4882a593Smuzhiyun 	asm volatile ("pushfq ; popq %0 ; cli\n" : "=g" (flags) : );
21*4882a593Smuzhiyun 
22*4882a593Smuzhiyun 	return flags & X86_EFLAGS_IF;
23*4882a593Smuzhiyun }
24*4882a593Smuzhiyun 
interrupt_init(void)25*4882a593Smuzhiyun int interrupt_init(void)
26*4882a593Smuzhiyun {
27*4882a593Smuzhiyun 	/* Nothing to do - this was already done in SPL */
28*4882a593Smuzhiyun 	return 0;
29*4882a593Smuzhiyun }
30