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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>
wdenk38635852002-08-27 05:55:31 +000029
wdenk38635852002-08-27 05:55:31 +000030static int on_off (const char *);
31
32int do_icache ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
33{
34 switch (argc) {
35 case 2: /* on / off */
36 switch (on_off(argv[1])) {
37#if 0 /* prevented by varargs handling; FALLTROUGH is harmless, too */
Peter Tyser62c3ae72009-01-27 18:03:10 -060038 default: cmd_usage(cmdtp);
wdenk38635852002-08-27 05:55:31 +000039 return;
40#endif
41 case 0: icache_disable();
42 break;
43 case 1: icache_enable ();
44 break;
45 }
46 /* FALL TROUGH */
47 case 1: /* get status */
48 printf ("Instruction Cache is %s\n",
49 icache_status() ? "ON" : "OFF");
50 return 0;
51 default:
Peter Tyser62c3ae72009-01-27 18:03:10 -060052 cmd_usage(cmdtp);
wdenk38635852002-08-27 05:55:31 +000053 return 1;
54 }
55 return 0;
56}
57
58int do_dcache ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
59{
60 switch (argc) {
61 case 2: /* on / off */
62 switch (on_off(argv[1])) {
63#if 0 /* prevented by varargs handling; FALLTROUGH is harmless, too */
Peter Tyser62c3ae72009-01-27 18:03:10 -060064 default: cmd_usage(cmdtp);
wdenk38635852002-08-27 05:55:31 +000065 return;
66#endif
67 case 0: dcache_disable();
68 break;
69 case 1: dcache_enable ();
70 break;
71 }
72 /* FALL TROUGH */
73 case 1: /* get status */
74 printf ("Data (writethrough) Cache is %s\n",
75 dcache_status() ? "ON" : "OFF");
76 return 0;
77 default:
Peter Tyser62c3ae72009-01-27 18:03:10 -060078 cmd_usage(cmdtp);
wdenk38635852002-08-27 05:55:31 +000079 return 1;
80 }
81 return 0;
82
83}
84
85static int on_off (const char *s)
86{
87 if (strcmp(s, "on") == 0) {
88 return (1);
89 } else if (strcmp(s, "off") == 0) {
90 return (0);
91 }
92 return (-1);
93}
94
wdenk8bde7f72003-06-27 21:31:46 +000095
wdenk0d498392003-07-01 21:06:45 +000096U_BOOT_CMD(
97 icache, 2, 1, do_icache,
Peter Tyser2fb26042009-01-27 18:03:12 -060098 "enable or disable instruction cache",
wdenk8bde7f72003-06-27 21:31:46 +000099 "[on, off]\n"
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200100 " - enable or disable instruction cache"
wdenk8bde7f72003-06-27 21:31:46 +0000101);
102
wdenk0d498392003-07-01 21:06:45 +0000103U_BOOT_CMD(
104 dcache, 2, 1, do_dcache,
Peter Tyser2fb26042009-01-27 18:03:12 -0600105 "enable or disable data cache",
wdenk8bde7f72003-06-27 21:31:46 +0000106 "[on, off]\n"
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200107 " - enable or disable data (writethrough) cache"
wdenk8bde7f72003-06-27 21:31:46 +0000108);