xref: /OK3568_Linux_fs/u-boot/arch/arm/mach-at91/arm926ejs/cache.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun  * (C) Copyright 2016
3*4882a593Smuzhiyun  * Heiko Schocher, DENX Software Engineering, hs@denx.de.
4*4882a593Smuzhiyun  *
5*4882a593Smuzhiyun  * SPDX-License-Identifier:	GPL-2.0+
6*4882a593Smuzhiyun  */
7*4882a593Smuzhiyun #include <linux/types.h>
8*4882a593Smuzhiyun #include <common.h>
9*4882a593Smuzhiyun 
enable_caches(void)10*4882a593Smuzhiyun void enable_caches(void)
11*4882a593Smuzhiyun {
12*4882a593Smuzhiyun #ifndef CONFIG_SYS_ICACHE_OFF
13*4882a593Smuzhiyun 	icache_enable();
14*4882a593Smuzhiyun #endif
15*4882a593Smuzhiyun }
16*4882a593Smuzhiyun 
17*4882a593Smuzhiyun #ifndef CONFIG_SYS_ICACHE_OFF
18*4882a593Smuzhiyun /* Invalidate entire I-cache and branch predictor array */
invalidate_icache_all(void)19*4882a593Smuzhiyun void invalidate_icache_all(void)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun 	unsigned long i = 0;
22*4882a593Smuzhiyun 
23*4882a593Smuzhiyun 	asm ("mcr p15, 0, %0, c7, c5, 0" : : "r" (i));
24*4882a593Smuzhiyun }
25*4882a593Smuzhiyun #else
invalidate_icache_all(void)26*4882a593Smuzhiyun void invalidate_icache_all(void)
27*4882a593Smuzhiyun {
28*4882a593Smuzhiyun }
29*4882a593Smuzhiyun #endif
30