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