source: SVN/rincon/u-boot/common/cmd_cache.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 2 years ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 2.6 KB
Line 
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>
29
30#if defined(CONFIG_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
97
98U_BOOT_CMD(
99        icache,   2,   1,     do_icache,
100        "icache  - enable or disable instruction cache\n",
101        "[on, off]\n"
102        "    - enable or disable instruction cache\n"
103);
104
105U_BOOT_CMD(
106        dcache,   2,   1,     do_dcache,
107        "dcache  - enable or disable data cache\n",
108        "[on, off]\n"
109        "    - enable or disable data (writethrough) cache\n"
110);
111
112#endif
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