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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>
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29
30#if (CONFIG_COMMANDS & CFG_CMD_CACHE)
31
32static int on_off (const char *);
33
34int 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
60int 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
87static 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
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98U_BOOT_CMD(
99 icache, 2, 1, do_icache,
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100 "icache - enable or disable instruction cache\n",
101 "[on, off]\n"
102 " - enable or disable instruction cache\n"
103);
104
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105U_BOOT_CMD(
106 dcache, 2, 1, do_dcache,
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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 */