[people/ms/u-boot.git] / common / cmd_cache.c

/*
 * (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>

static int on_off (const char *);

int do_icache ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	switch (argc) {
	case 2:			/* on / off	*/
		switch (on_off(argv[1])) {
#if 0	/* prevented by varargs handling; FALLTROUGH is harmless, too */
		default: cmd_usage(cmdtp);
			return;
#endif
		case 0:	icache_disable();
			break;
		case 1:	icache_enable ();
			break;
		}
		/* FALL TROUGH */
	case 1:			/* get status */
		printf ("Instruction Cache is %s\n",
			icache_status() ? "ON" : "OFF");
		return 0;
	default:
		cmd_usage(cmdtp);
		return 1;
	}
	return 0;
}

int do_dcache ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	switch (argc) {
	case 2:			/* on / off	*/
		switch (on_off(argv[1])) {
#if 0	/* prevented by varargs handling; FALLTROUGH is harmless, too */
		default: cmd_usage(cmdtp);
			return;
#endif
		case 0:	dcache_disable();
			break;
		case 1:	dcache_enable ();
			break;
		}
		/* FALL TROUGH */
	case 1:			/* get status */
		printf ("Data (writethrough) Cache is %s\n",
			dcache_status() ? "ON" : "OFF");
		return 0;
	default:
		cmd_usage(cmdtp);
		return 1;
	}
	return 0;

}

static int on_off (const char *s)
{
	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]\n"
	"    - enable or disable instruction cache"
);

U_BOOT_CMD(
	dcache,   2,   1,     do_dcache,
	"enable or disable data cache",
	"[on, off]\n"
	"    - enable or disable data (writethrough) cache"
);
Commit	Line	Data
3863585b WD	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>
3863585b	29
3863585b WD	30	static int on_off (const char *);
	31
	32	int do_icache ( cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	33	{
	34	switch (argc) {
	35	case 2: /* on / off */
	36	switch (on_off(argv[1])) {
	37	#if 0 /* prevented by varargs handling; FALLTROUGH is harmless, too */
62c3ae7c	38	default: cmd_usage(cmdtp);
3863585b WD	39	return;
	40	#endif
	41	case 0: icache_disable();
	42	break;
	43	case 1: icache_enable ();
	44	break;
	45	}
	46	/* FALL TROUGH */
	47	case 1: /* get status */
	48	printf ("Instruction Cache is %s\n",
	49	icache_status() ? "ON" : "OFF");
	50	return 0;
	51	default:
62c3ae7c	52	cmd_usage(cmdtp);
3863585b WD	53	return 1;
	54	}
	55	return 0;
	56	}
	57
	58	int do_dcache ( cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	59	{
	60	switch (argc) {
	61	case 2: /* on / off */
	62	switch (on_off(argv[1])) {
	63	#if 0 /* prevented by varargs handling; FALLTROUGH is harmless, too */
62c3ae7c	64	default: cmd_usage(cmdtp);
3863585b WD	65	return;
	66	#endif
	67	case 0: dcache_disable();
	68	break;
	69	case 1: dcache_enable ();
	70	break;
	71	}
	72	/* FALL TROUGH */
	73	case 1: /* get status */
	74	printf ("Data (writethrough) Cache is %s\n",
	75	dcache_status() ? "ON" : "OFF");
	76	return 0;
	77	default:
62c3ae7c	78	cmd_usage(cmdtp);
3863585b WD	79	return 1;
	80	}
	81	return 0;
	82
	83	}
	84
	85	static int on_off (const char *s)
	86	{
	87	if (strcmp(s, "on") == 0) {
	88	return (1);
	89	} else if (strcmp(s, "off") == 0) {
	90	return (0);
	91	}
	92	return (-1);
	93	}
	94
8bde7f77	95
0d498393 WD	96	U_BOOT_CMD(
0d498393 WD	97	icache, 2, 1, do_icache,
2fb2604d	98	"enable or disable instruction cache",
8bde7f77	99	"[on, off]\n"
a89c33db	100	" - enable or disable instruction cache"
8bde7f77 WD	101	);
8bde7f77 WD	102
0d498393 WD	103	U_BOOT_CMD(
0d498393 WD	104	dcache, 2, 1, do_dcache,
2fb2604d	105	"enable or disable data cache",
8bde7f77	106	"[on, off]\n"
a89c33db	107	" - enable or disable data (writethrough) cache"
8bde7f77	108	);