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Commit | Line | Data |
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83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
3863585b WD |
2 | /* |
3 | * (C) Copyright 2000 | |
4 | * Wolfgang Denk, DENX Software Engineering, [email protected]. | |
3863585b WD |
5 | */ |
6 | ||
7 | /* | |
8 | * Cache support: switch on or off, get status | |
9 | */ | |
10 | #include <common.h> | |
11 | #include <command.h> | |
9edefc27 | 12 | #include <cpu_func.h> |
d0c4c338 | 13 | #include <linux/compiler.h> |
3863585b | 14 | |
d0c4c338 MM |
15 | static int parse_argv(const char *); |
16 | ||
23498935 | 17 | void __weak invalidate_icache_all(void) |
d0c4c338 | 18 | { |
23498935 SK |
19 | /* please define arch specific invalidate_icache_all */ |
20 | puts("No arch specific invalidate_icache_all available!\n"); | |
d0c4c338 | 21 | } |
3863585b | 22 | |
0e350f81 | 23 | static int do_icache(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
3863585b WD |
24 | { |
25 | switch (argc) { | |
f043dc28 | 26 | case 2: /* on / off / flush */ |
d0c4c338 | 27 | switch (parse_argv(argv[1])) { |
e9455fcc JH |
28 | case 0: |
29 | icache_disable(); | |
3863585b | 30 | break; |
e9455fcc JH |
31 | case 1: |
32 | icache_enable(); | |
3863585b | 33 | break; |
e9455fcc JH |
34 | case 2: |
35 | invalidate_icache_all(); | |
d0c4c338 | 36 | break; |
f043dc28 EP |
37 | default: |
38 | return CMD_RET_USAGE; | |
3863585b | 39 | } |
36180d96 | 40 | break; |
3863585b | 41 | case 1: /* get status */ |
e9455fcc | 42 | printf("Instruction Cache is %s\n", |
3863585b WD |
43 | icache_status() ? "ON" : "OFF"); |
44 | return 0; | |
45 | default: | |
4c12eeb8 | 46 | return CMD_RET_USAGE; |
3863585b WD |
47 | } |
48 | return 0; | |
49 | } | |
50 | ||
23498935 | 51 | void __weak flush_dcache_all(void) |
d0c4c338 | 52 | { |
23498935 SK |
53 | puts("No arch specific flush_dcache_all available!\n"); |
54 | /* please define arch specific flush_dcache_all */ | |
d0c4c338 MM |
55 | } |
56 | ||
0e350f81 | 57 | static int do_dcache(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
3863585b WD |
58 | { |
59 | switch (argc) { | |
f043dc28 | 60 | case 2: /* on / off / flush */ |
d0c4c338 | 61 | switch (parse_argv(argv[1])) { |
e9455fcc JH |
62 | case 0: |
63 | dcache_disable(); | |
3863585b | 64 | break; |
e9455fcc JH |
65 | case 1: |
66 | dcache_enable(); | |
3863585b | 67 | break; |
e9455fcc JH |
68 | case 2: |
69 | flush_dcache_all(); | |
d0c4c338 | 70 | break; |
f043dc28 EP |
71 | default: |
72 | return CMD_RET_USAGE; | |
3863585b | 73 | } |
e9455fcc | 74 | break; |
3863585b | 75 | case 1: /* get status */ |
e9455fcc | 76 | printf("Data (writethrough) Cache is %s\n", |
3863585b WD |
77 | dcache_status() ? "ON" : "OFF"); |
78 | return 0; | |
79 | default: | |
4c12eeb8 | 80 | return CMD_RET_USAGE; |
3863585b WD |
81 | } |
82 | return 0; | |
3863585b WD |
83 | } |
84 | ||
d0c4c338 | 85 | static int parse_argv(const char *s) |
3863585b | 86 | { |
e9455fcc JH |
87 | if (strcmp(s, "flush") == 0) |
88 | return 2; | |
89 | else if (strcmp(s, "on") == 0) | |
90 | return 1; | |
91 | else if (strcmp(s, "off") == 0) | |
92 | return 0; | |
93 | ||
94 | return -1; | |
3863585b WD |
95 | } |
96 | ||
8bde7f77 | 97 | |
0d498393 WD |
98 | U_BOOT_CMD( |
99 | icache, 2, 1, do_icache, | |
2fb2604d | 100 | "enable or disable instruction cache", |
d0c4c338 MM |
101 | "[on, off, flush]\n" |
102 | " - enable, disable, or flush instruction cache" | |
8bde7f77 WD |
103 | ); |
104 | ||
0d498393 WD |
105 | U_BOOT_CMD( |
106 | dcache, 2, 1, do_dcache, | |
2fb2604d | 107 | "enable or disable data cache", |
d0c4c338 MM |
108 | "[on, off, flush]\n" |
109 | " - enable, disable, or flush data (writethrough) cache" | |
8bde7f77 | 110 | ); |