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wdenk38635852002-08-27 05:55:31 +00001/*
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
33static int on_off (const char *);
34
35int 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
61int 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
88static 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 */