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author | wdenk <wdenk> | 2002-08-27 05:55:31 +0000 |
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committer | wdenk <wdenk> | 2002-08-27 05:55:31 +0000 |
commit | 3863585bb1c1e8f89b4a2e90c4b83f8b81b8e029 (patch) | |
tree | d23ca6b76e08fd06d675c32f72d1082173e7eaf1 /common/cmd_cache.c | |
parent | f8cac651b33efa270e4dfa1292d01a3b5d7a62cf (diff) | |
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Initial revision
Diffstat (limited to 'common/cmd_cache.c')
-rw-r--r-- | common/cmd_cache.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/common/cmd_cache.c b/common/cmd_cache.c new file mode 100644 index 0000000..f2015b3 --- /dev/null +++ b/common/cmd_cache.c @@ -0,0 +1,98 @@ +/* + * (C) Copyright 2000 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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; either version 2 of + * the License, or (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* + * Cache support: switch on or off, get status + */ +#include <common.h> +#include <command.h> +#include <cmd_cache.h> + +#if (CONFIG_COMMANDS & CFG_CMD_CACHE) + +static int on_off (const char *); + +int do_icache ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + switch (argc) { + case 2: /* on / off */ + switch (on_off(argv[1])) { +#if 0 /* prevented by varargs handling; FALLTROUGH is harmless, too */ + default: printf ("Usage:\n%s\n", cmdtp->usage); + return; +#endif + case 0: icache_disable(); + break; + case 1: icache_enable (); + break; + } + /* FALL TROUGH */ + case 1: /* get status */ + printf ("Instruction Cache is %s\n", + icache_status() ? "ON" : "OFF"); + return 0; + default: + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + } + return 0; +} + +int do_dcache ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + switch (argc) { + case 2: /* on / off */ + switch (on_off(argv[1])) { +#if 0 /* prevented by varargs handling; FALLTROUGH is harmless, too */ + default: printf ("Usage:\n%s\n", cmdtp->usage); + return; +#endif + case 0: dcache_disable(); + break; + case 1: dcache_enable (); + break; + } + /* FALL TROUGH */ + case 1: /* get status */ + printf ("Data (writethrough) Cache is %s\n", + dcache_status() ? "ON" : "OFF"); + return 0; + default: + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + } + return 0; + +} + +static int on_off (const char *s) +{ + if (strcmp(s, "on") == 0) { + return (1); + } else if (strcmp(s, "off") == 0) { + return (0); + } + return (-1); +} + +#endif /* CFG_CMD_CACHE */ |