1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2011
* Ilya Yanok, EmCraft Systems
*/
#include <cpu_func.h>
#include <asm/cache.h>
#include <linux/types.h>
#include <common.h>
#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
void invalidate_dcache_all(void)
{
asm volatile("mcr p15, 0, %0, c7, c6, 0\n" : : "r"(0));
}
void flush_dcache_all(void)
{
asm volatile(
"0:"
"mrc p15, 0, r15, c7, c14, 3\n"
"bne 0b\n"
"mcr p15, 0, %0, c7, c10, 4\n"
: : "r"(0) : "memory"
);
}
void invalidate_dcache_range(unsigned long start, unsigned long stop)
{
if (!check_cache_range(start, stop))
return;
while (start < stop) {
asm volatile("mcr p15, 0, %0, c7, c6, 1\n" : : "r"(start));
start += CONFIG_SYS_CACHELINE_SIZE;
}
}
void flush_dcache_range(unsigned long start, unsigned long stop)
{
if (!check_cache_range(start, stop))
return;
while (start < stop) {
asm volatile("mcr p15, 0, %0, c7, c14, 1\n" : : "r"(start));
start += CONFIG_SYS_CACHELINE_SIZE;
}
asm volatile("mcr p15, 0, %0, c7, c10, 4\n" : : "r"(0));
}
#else /* #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF) */
void invalidate_dcache_all(void)
{
}
void flush_dcache_all(void)
{
}
#endif /* #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF) */
/*
* Stub implementations for l2 cache operations
*/
__weak void l2_cache_disable(void) {}
#if CONFIG_IS_ENABLED(SYS_THUMB_BUILD)
__weak void invalidate_l2_cache(void) {}
#endif
#if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
/* Invalidate entire I-cache and branch predictor array */
void invalidate_icache_all(void)
{
unsigned long i = 0;
asm ("mcr p15, 0, %0, c7, c5, 0" : : "r" (i));
}
#else
void invalidate_icache_all(void) {}
#endif
void enable_caches(void)
{
#if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
icache_enable();
#endif
#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
dcache_enable();
#endif
}
|