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/*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/*
* Cache support: switch on or off, get status
*/
#include <common.h>
#include <command.h>
#include <linux/compiler.h>
static int parse_argv(const char *);
void __weak flush_icache(void)
{
/* please define arch specific flush_icache */
puts("No arch specific flush_icache available!\n");
}
int do_icache ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
switch (argc) {
case 2: /* on / off */
switch (parse_argv(argv[1])) {
case 0: icache_disable();
break;
case 1: icache_enable ();
break;
case 2: flush_icache();
break;
}
/* FALL TROUGH */
case 1: /* get status */
printf ("Instruction Cache is %s\n",
icache_status() ? "ON" : "OFF");
return 0;
default:
return cmd_usage(cmdtp);
}
return 0;
}
void __weak flush_dcache(void)
{
puts("No arch specific flush_dcache available!\n");
/* please define arch specific flush_dcache */
}
int do_dcache ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
switch (argc) {
case 2: /* on / off */
switch (parse_argv(argv[1])) {
case 0: dcache_disable();
break;
case 1: dcache_enable ();
break;
case 2: flush_dcache();
break;
}
/* FALL TROUGH */
case 1: /* get status */
printf ("Data (writethrough) Cache is %s\n",
dcache_status() ? "ON" : "OFF");
return 0;
default:
return cmd_usage(cmdtp);
}
return 0;
}
static int parse_argv(const char *s)
{
if (strcmp(s, "flush") == 0) {
return (2);
} else if (strcmp(s, "on") == 0) {
return (1);
} else if (strcmp(s, "off") == 0) {
return (0);
}
return (-1);
}
U_BOOT_CMD(
icache, 2, 1, do_icache,
"enable or disable instruction cache",
"[on, off, flush]\n"
" - enable, disable, or flush instruction cache"
);
U_BOOT_CMD(
dcache, 2, 1, do_dcache,
"enable or disable data cache",
"[on, off, flush]\n"
" - enable, disable, or flush data (writethrough) cache"
);
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