text: /*
   * Copyright (C) 2000-2005, DENX Software Engineering
   *		Wolfgang Denk <wd@denx.de>
   * Copyright (C) Procsys. All rights reserved.
   *		Mushtaq Khan <mushtaq_k@procsys.com>
   *			<mushtaqk_921@yahoo.co.in>
   * Copyright (C) 2008 Freescale Semiconductor, Inc.
   *		Dave Liu <daveliu@freescale.com>
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #include <common.h>
  #include <command.h>
  #include <part.h>
  #include <sata.h>
  
  static int sata_curr_device = -1;
  
  static int do_sata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  {
  	int rc = 0;
  
  	if (argc == 2 && strcmp(argv[1], "stop") == 0)
  		return sata_stop();
  
  	if (argc == 2 && strcmp(argv[1], "init") == 0) {
  		if (sata_curr_device != -1)
  			sata_stop();
  
  		return sata_initialize();
  	}
  
  	/* If the user has not yet run `sata init`, do it now */
  	if (sata_curr_device == -1)
  		if (sata_initialize())
  			return 1;
  
  	switch (argc) {
  	case 0:
  	case 1:
  		return CMD_RET_USAGE;
  	case 2:
  		if (strncmp(argv[1], "inf", 3) == 0) {
  			blk_list_devices(IF_TYPE_SATA);
  			return 0;
  		} else if (strncmp(argv[1], "dev", 3) == 0) {
  			if (blk_print_device_num(IF_TYPE_SATA,
  						 sata_curr_device)) {
  				printf("\nno SATA devices available\n");
  				return CMD_RET_FAILURE;
  			}
  			return 0;
  		} else if (strncmp(argv[1], "part", 4) == 0) {
  			if (blk_list_part(IF_TYPE_SATA))
  				puts("\nno SATA devices available\n");
  			return 0;
  		}
  		return CMD_RET_USAGE;
  	case 3:
  		if (strncmp(argv[1], "dev", 3) == 0) {
  			int dev = (int)simple_strtoul(argv[2], NULL, 10);
  
  			if (!blk_show_device(IF_TYPE_SATA, dev)) {
  				sata_curr_device = dev;
  				printf("... is now current device\n");
  			} else {
  				return CMD_RET_FAILURE;
  			}
  			return 0;
  		} else if (strncmp(argv[1], "part", 4) == 0) {
  			int dev = (int)simple_strtoul(argv[2], NULL, 10);
  
  			if (blk_print_part_devnum(IF_TYPE_SATA, dev)) {
  				printf("\nSATA device %d not available\n",
  				       dev);
  				return CMD_RET_FAILURE;
  			}
  			return rc;
  		}
  		return CMD_RET_USAGE;
  
  	default: /* at least 4 args */
  		if (strcmp(argv[1], "read") == 0) {
  			ulong addr = simple_strtoul(argv[2], NULL, 16);
  			ulong cnt = simple_strtoul(argv[4], NULL, 16);
  			ulong n;
  			lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
  
  			printf("\nSATA read: device %d block # %ld, count %ld ... ",
  				sata_curr_device, blk, cnt);
  
  			n = blk_read_devnum(IF_TYPE_SATA, sata_curr_device, blk,
  					    cnt, (ulong *)addr);
  
  			printf("%ld blocks read: %s\n",
  				n, (n==cnt) ? "OK" : "ERROR");
  			return (n == cnt) ? 0 : 1;
  		} else if (strcmp(argv[1], "write") == 0) {
  			ulong addr = simple_strtoul(argv[2], NULL, 16);
  			ulong cnt = simple_strtoul(argv[4], NULL, 16);
  			ulong n;
  
  			lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
  
  			printf("\nSATA write: device %d block # %ld, count %ld ... ",
  				sata_curr_device, blk, cnt);
  
  			n = blk_write_devnum(IF_TYPE_SATA, sata_curr_device,
  					     blk, cnt, (ulong *)addr);
  
  			printf("%ld blocks written: %s\n",
  				n, (n == cnt) ? "OK" : "ERROR");
  			return (n == cnt) ? 0 : 1;
  		} else {
  			return CMD_RET_USAGE;
  		}
  
  		return rc;
  	}
  }
  
  U_BOOT_CMD(
  	sata, 5, 1, do_sata,
  	"SATA sub system",
  	"init - init SATA sub system\n"
  	"sata stop - disable SATA sub system\n"
  	"sata info - show available SATA devices\n"
  	"sata device [dev] - show or set current device\n"
  	"sata part [dev] - print partition table\n"
  	"sata read addr blk# cnt\n"
  	"sata write addr blk# cnt"
  );
  