[thirdparty/u-boot.git] / cmd / cache.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2000
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 */

/*
 * 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"
);
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
3863585b WD	2	/*
	3	* (C) Copyright 2000
	4	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
3863585b WD	5	*/
	6
	7	/*
	8	* Cache support: switch on or off, get status
	9	*/
	10	#include <common.h>
	11	#include <command.h>
d0c4c338	12	#include <linux/compiler.h>
3863585b	13
d0c4c338 MM	14	static int parse_argv(const char *);
d0c4c338 MM	15
23498935	16	void __weak invalidate_icache_all(void)
d0c4c338	17	{
23498935 SK	18	/* please define arch specific invalidate_icache_all */
23498935 SK	19	puts("No arch specific invalidate_icache_all available!\n");
d0c4c338	20	}
3863585b	21
0e350f81	22	static int do_icache(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
3863585b WD	23	{
	24	switch (argc) {
	25	case 2: /* on / off */
d0c4c338	26	switch (parse_argv(argv[1])) {
e9455fcc JH	27	case 0:
e9455fcc JH	28	icache_disable();
3863585b	29	break;
e9455fcc JH	30	case 1:
e9455fcc JH	31	icache_enable();
3863585b	32	break;
e9455fcc JH	33	case 2:
e9455fcc JH	34	invalidate_icache_all();
d0c4c338	35	break;
3863585b	36	}
36180d96	37	break;
3863585b	38	case 1: /* get status */
e9455fcc	39	printf("Instruction Cache is %s\n",
3863585b WD	40	icache_status() ? "ON" : "OFF");
	41	return 0;
	42	default:
4c12eeb8	43	return CMD_RET_USAGE;
3863585b WD	44	}
	45	return 0;
	46	}
	47
23498935	48	void __weak flush_dcache_all(void)
d0c4c338	49	{
23498935 SK	50	puts("No arch specific flush_dcache_all available!\n");
23498935 SK	51	/* please define arch specific flush_dcache_all */
d0c4c338 MM	52	}
d0c4c338 MM	53
0e350f81	54	static int do_dcache(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
3863585b WD	55	{
3863585b WD	56	switch (argc) {
e9455fcc	57	case 2: /* on / off */
d0c4c338	58	switch (parse_argv(argv[1])) {
e9455fcc JH	59	case 0:
e9455fcc JH	60	dcache_disable();
3863585b	61	break;
e9455fcc JH	62	case 1:
e9455fcc JH	63	dcache_enable();
3863585b	64	break;
e9455fcc JH	65	case 2:
e9455fcc JH	66	flush_dcache_all();
d0c4c338	67	break;
3863585b	68	}
e9455fcc	69	break;
3863585b	70	case 1: /* get status */
e9455fcc	71	printf("Data (writethrough) Cache is %s\n",
3863585b WD	72	dcache_status() ? "ON" : "OFF");
	73	return 0;
	74	default:
4c12eeb8	75	return CMD_RET_USAGE;
3863585b WD	76	}
3863585b WD	77	return 0;
3863585b WD	78	}
3863585b WD	79
d0c4c338	80	static int parse_argv(const char *s)
3863585b	81	{
e9455fcc JH	82	if (strcmp(s, "flush") == 0)
	83	return 2;
	84	else if (strcmp(s, "on") == 0)
	85	return 1;
	86	else if (strcmp(s, "off") == 0)
	87	return 0;
	88
	89	return -1;
3863585b WD	90	}
3863585b WD	91
8bde7f77	92
0d498393 WD	93	U_BOOT_CMD(
0d498393 WD	94	icache, 2, 1, do_icache,
2fb2604d	95	"enable or disable instruction cache",
d0c4c338 MM	96	"[on, off, flush]\n"
d0c4c338 MM	97	" - enable, disable, or flush instruction cache"
8bde7f77 WD	98	);
8bde7f77 WD	99
0d498393 WD	100	U_BOOT_CMD(
0d498393 WD	101	dcache, 2, 1, do_dcache,
2fb2604d	102	"enable or disable data cache",
d0c4c338 MM	103	"[on, off, flush]\n"
d0c4c338 MM	104	" - enable, disable, or flush data (writethrough) cache"
8bde7f77	105	);