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3863585b WD |
1 | /* |
2 | * (C) Copyright 2000 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License as | |
10 | * published by the Free Software Foundation; either version 2 of | |
11 | * the License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
21 | * MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* | |
25 | * Cache support: switch on or off, get status | |
26 | */ | |
27 | #include <common.h> | |
28 | #include <command.h> | |
3863585b WD |
29 | |
30 | #if (CONFIG_COMMANDS & CFG_CMD_CACHE) | |
31 | ||
32 | static int on_off (const char *); | |
33 | ||
34 | int do_icache ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
35 | { | |
36 | switch (argc) { | |
37 | case 2: /* on / off */ | |
38 | switch (on_off(argv[1])) { | |
39 | #if 0 /* prevented by varargs handling; FALLTROUGH is harmless, too */ | |
40 | default: printf ("Usage:\n%s\n", cmdtp->usage); | |
41 | return; | |
42 | #endif | |
43 | case 0: icache_disable(); | |
44 | break; | |
45 | case 1: icache_enable (); | |
46 | break; | |
47 | } | |
48 | /* FALL TROUGH */ | |
49 | case 1: /* get status */ | |
50 | printf ("Instruction Cache is %s\n", | |
51 | icache_status() ? "ON" : "OFF"); | |
52 | return 0; | |
53 | default: | |
54 | printf ("Usage:\n%s\n", cmdtp->usage); | |
55 | return 1; | |
56 | } | |
57 | return 0; | |
58 | } | |
59 | ||
60 | int do_dcache ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
61 | { | |
62 | switch (argc) { | |
63 | case 2: /* on / off */ | |
64 | switch (on_off(argv[1])) { | |
65 | #if 0 /* prevented by varargs handling; FALLTROUGH is harmless, too */ | |
66 | default: printf ("Usage:\n%s\n", cmdtp->usage); | |
67 | return; | |
68 | #endif | |
69 | case 0: dcache_disable(); | |
70 | break; | |
71 | case 1: dcache_enable (); | |
72 | break; | |
73 | } | |
74 | /* FALL TROUGH */ | |
75 | case 1: /* get status */ | |
76 | printf ("Data (writethrough) Cache is %s\n", | |
77 | dcache_status() ? "ON" : "OFF"); | |
78 | return 0; | |
79 | default: | |
80 | printf ("Usage:\n%s\n", cmdtp->usage); | |
81 | return 1; | |
82 | } | |
83 | return 0; | |
84 | ||
85 | } | |
86 | ||
87 | static int on_off (const char *s) | |
88 | { | |
89 | if (strcmp(s, "on") == 0) { | |
90 | return (1); | |
91 | } else if (strcmp(s, "off") == 0) { | |
92 | return (0); | |
93 | } | |
94 | return (-1); | |
95 | } | |
96 | ||
8bde7f77 | 97 | |
0d498393 WD |
98 | U_BOOT_CMD( |
99 | icache, 2, 1, do_icache, | |
8bde7f77 WD |
100 | "icache - enable or disable instruction cache\n", |
101 | "[on, off]\n" | |
102 | " - enable or disable instruction cache\n" | |
103 | ); | |
104 | ||
0d498393 WD |
105 | U_BOOT_CMD( |
106 | dcache, 2, 1, do_dcache, | |
8bde7f77 WD |
107 | "dcache - enable or disable data cache\n", |
108 | "[on, off]\n" | |
109 | " - enable or disable data (writethrough) cache\n" | |
110 | ); | |
111 | ||
3863585b | 112 | #endif /* CFG_CMD_CACHE */ |