| wdenk | 3863585 | 2002-08-27 05:55:31 +0000 | [diff] [blame] | 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> |
| 29 | #include <cmd_cache.h> |
| 30 | |
| 31 | #if (CONFIG_COMMANDS & CFG_CMD_CACHE) |
| 32 | |
| 33 | static int on_off (const char *); |
| 34 | |
| 35 | int do_icache ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) |
| 36 | { |
| 37 | switch (argc) { |
| 38 | case 2: /* on / off */ |
| 39 | switch (on_off(argv[1])) { |
| 40 | #if 0 /* prevented by varargs handling; FALLTROUGH is harmless, too */ |
| 41 | default: printf ("Usage:\n%s\n", cmdtp->usage); |
| 42 | return; |
| 43 | #endif |
| 44 | case 0: icache_disable(); |
| 45 | break; |
| 46 | case 1: icache_enable (); |
| 47 | break; |
| 48 | } |
| 49 | /* FALL TROUGH */ |
| 50 | case 1: /* get status */ |
| 51 | printf ("Instruction Cache is %s\n", |
| 52 | icache_status() ? "ON" : "OFF"); |
| 53 | return 0; |
| 54 | default: |
| 55 | printf ("Usage:\n%s\n", cmdtp->usage); |
| 56 | return 1; |
| 57 | } |
| 58 | return 0; |
| 59 | } |
| 60 | |
| 61 | int do_dcache ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) |
| 62 | { |
| 63 | switch (argc) { |
| 64 | case 2: /* on / off */ |
| 65 | switch (on_off(argv[1])) { |
| 66 | #if 0 /* prevented by varargs handling; FALLTROUGH is harmless, too */ |
| 67 | default: printf ("Usage:\n%s\n", cmdtp->usage); |
| 68 | return; |
| 69 | #endif |
| 70 | case 0: dcache_disable(); |
| 71 | break; |
| 72 | case 1: dcache_enable (); |
| 73 | break; |
| 74 | } |
| 75 | /* FALL TROUGH */ |
| 76 | case 1: /* get status */ |
| 77 | printf ("Data (writethrough) Cache is %s\n", |
| 78 | dcache_status() ? "ON" : "OFF"); |
| 79 | return 0; |
| 80 | default: |
| 81 | printf ("Usage:\n%s\n", cmdtp->usage); |
| 82 | return 1; |
| 83 | } |
| 84 | return 0; |
| 85 | |
| 86 | } |
| 87 | |
| 88 | static int on_off (const char *s) |
| 89 | { |
| 90 | if (strcmp(s, "on") == 0) { |
| 91 | return (1); |
| 92 | } else if (strcmp(s, "off") == 0) { |
| 93 | return (0); |
| 94 | } |
| 95 | return (-1); |
| 96 | } |
| 97 | |
| 98 | #endif /* CFG_CMD_CACHE */ |