1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+
22e192b24SSimon Glass /*
32e192b24SSimon Glass * (C) Copyright 2000
42e192b24SSimon Glass * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
52e192b24SSimon Glass */
62e192b24SSimon Glass
72e192b24SSimon Glass /*
82e192b24SSimon Glass * Cache support: switch on or off, get status
92e192b24SSimon Glass */
102e192b24SSimon Glass #include <common.h>
112e192b24SSimon Glass #include <command.h>
122e192b24SSimon Glass #include <linux/compiler.h>
132e192b24SSimon Glass
142e192b24SSimon Glass static int parse_argv(const char *);
152e192b24SSimon Glass
invalidate_icache_all(void)162e192b24SSimon Glass void __weak invalidate_icache_all(void)
172e192b24SSimon Glass {
182e192b24SSimon Glass /* please define arch specific invalidate_icache_all */
192e192b24SSimon Glass puts("No arch specific invalidate_icache_all available!\n");
202e192b24SSimon Glass }
212e192b24SSimon Glass
do_icache(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])222e192b24SSimon Glass static int do_icache(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
232e192b24SSimon Glass {
242e192b24SSimon Glass switch (argc) {
252e192b24SSimon Glass case 2: /* on / off */
262e192b24SSimon Glass switch (parse_argv(argv[1])) {
272e192b24SSimon Glass case 0:
282e192b24SSimon Glass icache_disable();
292e192b24SSimon Glass break;
302e192b24SSimon Glass case 1:
312e192b24SSimon Glass icache_enable();
322e192b24SSimon Glass break;
332e192b24SSimon Glass case 2:
342e192b24SSimon Glass invalidate_icache_all();
352e192b24SSimon Glass break;
362e192b24SSimon Glass }
372e192b24SSimon Glass break;
382e192b24SSimon Glass case 1: /* get status */
392e192b24SSimon Glass printf("Instruction Cache is %s\n",
402e192b24SSimon Glass icache_status() ? "ON" : "OFF");
412e192b24SSimon Glass return 0;
422e192b24SSimon Glass default:
432e192b24SSimon Glass return CMD_RET_USAGE;
442e192b24SSimon Glass }
452e192b24SSimon Glass return 0;
462e192b24SSimon Glass }
472e192b24SSimon Glass
flush_dcache_all(void)482e192b24SSimon Glass void __weak flush_dcache_all(void)
492e192b24SSimon Glass {
502e192b24SSimon Glass puts("No arch specific flush_dcache_all available!\n");
512e192b24SSimon Glass /* please define arch specific flush_dcache_all */
522e192b24SSimon Glass }
532e192b24SSimon Glass
do_dcache(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])542e192b24SSimon Glass static int do_dcache(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
552e192b24SSimon Glass {
562e192b24SSimon Glass switch (argc) {
572e192b24SSimon Glass case 2: /* on / off */
582e192b24SSimon Glass switch (parse_argv(argv[1])) {
592e192b24SSimon Glass case 0:
602e192b24SSimon Glass dcache_disable();
612e192b24SSimon Glass break;
622e192b24SSimon Glass case 1:
632e192b24SSimon Glass dcache_enable();
642e192b24SSimon Glass break;
652e192b24SSimon Glass case 2:
662e192b24SSimon Glass flush_dcache_all();
672e192b24SSimon Glass break;
682e192b24SSimon Glass }
692e192b24SSimon Glass break;
702e192b24SSimon Glass case 1: /* get status */
712e192b24SSimon Glass printf("Data (writethrough) Cache is %s\n",
722e192b24SSimon Glass dcache_status() ? "ON" : "OFF");
732e192b24SSimon Glass return 0;
742e192b24SSimon Glass default:
752e192b24SSimon Glass return CMD_RET_USAGE;
762e192b24SSimon Glass }
772e192b24SSimon Glass return 0;
782e192b24SSimon Glass }
792e192b24SSimon Glass
parse_argv(const char * s)802e192b24SSimon Glass static int parse_argv(const char *s)
812e192b24SSimon Glass {
822e192b24SSimon Glass if (strcmp(s, "flush") == 0)
832e192b24SSimon Glass return 2;
842e192b24SSimon Glass else if (strcmp(s, "on") == 0)
852e192b24SSimon Glass return 1;
862e192b24SSimon Glass else if (strcmp(s, "off") == 0)
872e192b24SSimon Glass return 0;
882e192b24SSimon Glass
892e192b24SSimon Glass return -1;
902e192b24SSimon Glass }
912e192b24SSimon Glass
922e192b24SSimon Glass
932e192b24SSimon Glass U_BOOT_CMD(
942e192b24SSimon Glass icache, 2, 1, do_icache,
952e192b24SSimon Glass "enable or disable instruction cache",
962e192b24SSimon Glass "[on, off, flush]\n"
972e192b24SSimon Glass " - enable, disable, or flush instruction cache"
982e192b24SSimon Glass );
992e192b24SSimon Glass
1002e192b24SSimon Glass U_BOOT_CMD(
1012e192b24SSimon Glass dcache, 2, 1, do_dcache,
1022e192b24SSimon Glass "enable or disable data cache",
1032e192b24SSimon Glass "[on, off, flush]\n"
1042e192b24SSimon Glass " - enable, disable, or flush data (writethrough) cache"
1052e192b24SSimon Glass );
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