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cmd/scsi.c 1.56 KB
e887afc9d   wdenk   Initial revision
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  /*
   * (C) Copyright 2001
   * Denis Peter, MPL AG Switzerland
   *
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   * SPDX-License-Identifier:	GPL-2.0+
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   */
  
  /*
   * SCSI support.
   */
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  #include <common.h>
  #include <command.h>
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  #include <scsi.h>
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  static int scsi_curr_dev; /* current device */
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  /*
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   * scsi boot command intepreter. Derived from diskboot
   */
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  static int do_scsiboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
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  {
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  	return common_diskboot(cmdtp, "scsi", argc, argv);
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  }
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  /*
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   * scsi command intepreter
   */
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  static int do_scsi(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
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  {
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  	int ret;
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  	if (argc == 2) {
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  		if (strncmp(argv[1], "res", 3) == 0) {
  			printf("
  Reset SCSI
  ");
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  #ifndef CONFIG_DM_SCSI
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  			scsi_bus_reset(NULL);
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  #endif
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  			ret = scsi_scan(true);
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  			if (ret)
  				return CMD_RET_FAILURE;
  			return ret;
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  		}
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  		if (strncmp(argv[1], "scan", 4) == 0) {
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  			ret = scsi_scan(true);
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  			if (ret)
  				return CMD_RET_FAILURE;
  			return ret;
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  		}
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  	}
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  	return blk_common_cmd(argc, argv, IF_TYPE_SCSI, &scsi_curr_dev);
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  }
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  U_BOOT_CMD(
  	scsi, 5, 1, do_scsi,
  	"SCSI sub-system",
  	"reset - reset SCSI controller
  "
  	"scsi info  - show available SCSI devices
  "
  	"scsi scan  - (re-)scan SCSI bus
  "
  	"scsi device [dev] - show or set current device
  "
  	"scsi part [dev] - print partition table of one or all SCSI devices
  "
  	"scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'
  "
  	"     to memory address `addr'
  "
  	"scsi write addr blk# cnt - write `cnt' blocks starting at block
  "
  	"     `blk#' from memory address `addr'"
  );
  
  U_BOOT_CMD(
  	scsiboot, 3, 1, do_scsiboot,
  	"boot from SCSI device",
  	"loadAddr dev:part"
  );