/*
|
* (C) Copyright 2000
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
*
|
* SPDX-License-Identifier: GPL-2.0+
|
*/
|
|
/*
|
* 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 invalidate_icache_all(void)
|
{
|
/* please define arch specific invalidate_icache_all */
|
puts("No arch specific invalidate_icache_all available!\n");
|
}
|
|
static 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:
|
invalidate_icache_all();
|
break;
|
}
|
break;
|
case 1: /* get status */
|
printf("Instruction Cache is %s\n",
|
icache_status() ? "ON" : "OFF");
|
return 0;
|
default:
|
return CMD_RET_USAGE;
|
}
|
return 0;
|
}
|
|
void __weak flush_dcache_all(void)
|
{
|
puts("No arch specific flush_dcache_all available!\n");
|
/* please define arch specific flush_dcache_all */
|
}
|
|
static 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_all();
|
break;
|
}
|
break;
|
case 1: /* get status */
|
printf("Data (writethrough) Cache is %s\n",
|
dcache_status() ? "ON" : "OFF");
|
return 0;
|
default:
|
return CMD_RET_USAGE;
|
}
|
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"
|
);
|
