1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2016 Vasily Khoruzhick <anarsoul@gmail.com>
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <linux/types.h>
8*4882a593Smuzhiyun #include <common.h>
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #ifndef CONFIG_SYS_DCACHE_OFF
invalidate_dcache_all(void)11*4882a593Smuzhiyun void invalidate_dcache_all(void)
12*4882a593Smuzhiyun {
13*4882a593Smuzhiyun /* Flush/Invalidate I cache */
14*4882a593Smuzhiyun asm volatile("mcr p15, 0, %0, c7, c5, 0\n" : : "r"(0));
15*4882a593Smuzhiyun /* Flush/Invalidate D cache */
16*4882a593Smuzhiyun asm volatile("mcr p15, 0, %0, c7, c6, 0\n" : : "r"(0));
17*4882a593Smuzhiyun }
18*4882a593Smuzhiyun
flush_dcache_all(void)19*4882a593Smuzhiyun void flush_dcache_all(void)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun return invalidate_dcache_all();
22*4882a593Smuzhiyun }
23*4882a593Smuzhiyun
invalidate_dcache_range(unsigned long start,unsigned long stop)24*4882a593Smuzhiyun void invalidate_dcache_range(unsigned long start, unsigned long stop)
25*4882a593Smuzhiyun {
26*4882a593Smuzhiyun start &= ~(CONFIG_SYS_CACHELINE_SIZE - 1);
27*4882a593Smuzhiyun stop &= ~(CONFIG_SYS_CACHELINE_SIZE - 1);
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun while (start <= stop) {
30*4882a593Smuzhiyun asm volatile("mcr p15, 0, %0, c7, c6, 1\n" : : "r"(start));
31*4882a593Smuzhiyun start += CONFIG_SYS_CACHELINE_SIZE;
32*4882a593Smuzhiyun }
33*4882a593Smuzhiyun }
34*4882a593Smuzhiyun
flush_dcache_range(unsigned long start,unsigned long stop)35*4882a593Smuzhiyun void flush_dcache_range(unsigned long start, unsigned long stop)
36*4882a593Smuzhiyun {
37*4882a593Smuzhiyun return invalidate_dcache_range(start, stop);
38*4882a593Smuzhiyun }
39*4882a593Smuzhiyun #else /* #ifndef CONFIG_SYS_DCACHE_OFF */
invalidate_dcache_all(void)40*4882a593Smuzhiyun void invalidate_dcache_all(void)
41*4882a593Smuzhiyun {
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun
flush_dcache_all(void)44*4882a593Smuzhiyun void flush_dcache_all(void)
45*4882a593Smuzhiyun {
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun #endif /* #ifndef CONFIG_SYS_DCACHE_OFF */
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun /*
50*4882a593Smuzhiyun * Stub implementations for l2 cache operations
51*4882a593Smuzhiyun */
52*4882a593Smuzhiyun
l2_cache_disable(void)53*4882a593Smuzhiyun __weak void l2_cache_disable(void) {}
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun #if CONFIG_IS_ENABLED(SYS_THUMB_BUILD)
invalidate_l2_cache(void)56*4882a593Smuzhiyun __weak void invalidate_l2_cache(void) {}
57*4882a593Smuzhiyun #endif
58