3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
25 * Cache support: switch on or off, get status
29 #include <linux/compiler.h>
31 static int parse_argv(const char *);
33 void __weak invalidate_icache_all(void)
35 /* please define arch specific invalidate_icache_all */
36 puts("No arch specific invalidate_icache_all available!\n");
39 int do_icache(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
42 case 2: /* on / off */
43 switch (parse_argv(argv[1])) {
51 invalidate_icache_all();
55 case 1: /* get status */
56 printf("Instruction Cache is %s\n",
57 icache_status() ? "ON" : "OFF");
65 void __weak flush_dcache_all(void)
67 puts("No arch specific flush_dcache_all available!\n");
68 /* please define arch specific flush_dcache_all */
71 int do_dcache(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
74 case 2: /* on / off */
75 switch (parse_argv(argv[1])) {
87 case 1: /* get status */
88 printf("Data (writethrough) Cache is %s\n",
89 dcache_status() ? "ON" : "OFF");
97 static int parse_argv(const char *s)
99 if (strcmp(s, "flush") == 0)
101 else if (strcmp(s, "on") == 0)
103 else if (strcmp(s, "off") == 0)
111 icache, 2, 1, do_icache,
112 "enable or disable instruction cache",
114 " - enable, disable, or flush instruction cache"
118 dcache, 2, 1, do_dcache,
119 "enable or disable data cache",
121 " - enable, disable, or flush data (writethrough) cache"