blob: 7aba112c714b61a7d40d2c0f5703f0fac990eace [file] [log] [blame]
Vasily Khoruzhickb1670092016-03-20 18:37:07 -07001/*
2 * (C) Copyright 2016 Vasily Khoruzhick <anarsoul@gmail.com>
3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7#include <linux/types.h>
8#include <common.h>
9
10#ifndef CONFIG_SYS_DCACHE_OFF
11
12#ifndef CONFIG_SYS_CACHELINE_SIZE
13#define CONFIG_SYS_CACHELINE_SIZE 32
14#endif
15
16void invalidate_dcache_all(void)
17{
18 /* Flush/Invalidate I cache */
19 asm volatile("mcr p15, 0, %0, c7, c5, 0\n" : : "r"(0));
20 /* Flush/Invalidate D cache */
21 asm volatile("mcr p15, 0, %0, c7, c6, 0\n" : : "r"(0));
22}
23
24void flush_dcache_all(void)
25{
26 return invalidate_dcache_all();
27}
28
29void invalidate_dcache_range(unsigned long start, unsigned long stop)
30{
31 start &= ~(CONFIG_SYS_CACHELINE_SIZE - 1);
32 stop &= ~(CONFIG_SYS_CACHELINE_SIZE - 1);
33
34 while (start <= stop) {
35 asm volatile("mcr p15, 0, %0, c7, c6, 1\n" : : "r"(start));
36 start += CONFIG_SYS_CACHELINE_SIZE;
37 }
38}
39
40void flush_dcache_range(unsigned long start, unsigned long stop)
41{
42 return invalidate_dcache_range(start, stop);
43}
44#else /* #ifndef CONFIG_SYS_DCACHE_OFF */
45void invalidate_dcache_all(void)
46{
47}
48
49void flush_dcache_all(void)
50{
51}
52#endif /* #ifndef CONFIG_SYS_DCACHE_OFF */
53
54/*
55 * Stub implementations for l2 cache operations
56 */
57
58__weak void l2_cache_disable(void) {}
59
60#if defined CONFIG_SYS_THUMB_BUILD
61__weak void invalidate_l2_cache(void) {}
62#endif