blob: e65a2a00ae0094523a894858959353aa5e8f8264 (
plain)
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
92
93
94
|
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MIPS_ARCH_CACHE_H__
#define __MIPS_ARCH_CACHE_H__
#include <stddef.h>
#include <stdint.h>
/*
* Sync primitives
*/
/* data memory barrier */
static inline void dmb(void)
{
/* TODO */
}
/* data sync barrier */
static inline void dsb(void)
{
/* TODO */
}
/* instruction sync barrier */
static inline void isb(void)
{
/* TODO */
}
/*
* Cache maintenance API
*/
/* dcache clean and invalidate all */
void dcache_clean_invalidate_all(void);
/* dcache clean all */
void dcache_clean_all(void);
/* dcache invalidate all (on current level given by CCSELR) */
void dcache_invalidate_all(void);
/* returns number of bytes per cache line */
unsigned int dcache_line_bytes(void);
/* dcache and MMU disable */
void dcache_mmu_disable(void);
/* dcache and MMU enable */
void dcache_mmu_enable(void);
/* perform all icache/dcache maintenance needed after loading new code */
void cache_sync_instructions(void);
/* tlb invalidate all */
void tlb_invalidate_all(void);
/*
* Generalized setup/init functions
*/
/* mmu initialization (set page table address, set permissions, etc) */
void mmu_init(void);
enum dcache_policy {
DCACHE_OFF,
DCACHE_WRITEBACK,
DCACHE_WRITETHROUGH,
};
/* disable the mmu for a range. Primarily useful to lock out address 0. */
void mmu_disable_range(unsigned long start_mb, unsigned long size_mb);
/* mmu range configuration (set dcache policy) */
void mmu_config_range(unsigned long start_mb, unsigned long size_mb,
enum dcache_policy policy);
#endif /* __MIPS_ARCH_CACHE_H__ */
|
