/*
   * (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 invalidate_icache_all(void)

  {

  	/* please define arch specific invalidate_icache_all */
  	puts("No arch specific invalidate_icache_all available!
  ");

  }

  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;

  		}
  		/* FALL TROUGH */
  	case 1:			/* get status */
  		printf ("Instruction Cache is %s
  ",
  			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!
  ");
  	/* please define arch specific flush_dcache_all */

  }

  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;

  		}
  		/* FALL TROUGH */
  	case 1:			/* get status */
  		printf ("Data (writethrough) Cache is %s
  ",
  			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]
  "
  	"    - enable, disable, or flush instruction cache"

  );

  U_BOOT_CMD(
  	dcache,   2,   1,     do_dcache,

  	"enable or disable data cache",

  	"[on, off, flush]
  "
  	"    - enable, disable, or flush data (writethrough) cache"

  );