/*
   * (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!
  ");

  }

  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
  ",

  			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 */

  }

  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
  ",

  			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"

  );