cmd/scsi.c

   1 /*
   2  * (C) Copyright 2001
   3  * Denis Peter, MPL AG Switzerland
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 /*
   9  * SCSI support.
  10  */
  11 #include <common.h>
  12 #include <command.h>
  13 #include <scsi.h>
  14
  15 static int scsi_curr_dev; /* current device */
  16
  17 /*
  18  * scsi boot command intepreter. Derived from diskboot
  19  */
  20 static int do_scsiboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  21 {
  22         return common_diskboot(cmdtp, "scsi", argc, argv);
  23 }
  24
  25 /*
  26  * scsi command intepreter
  27  */
  28 static int do_scsi(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  29 {
  30         int ret;
  31
  32         if (argc == 2) {
  33                 if (strncmp(argv[1], "res", 3) == 0) {
  34                         printf("\nReset SCSI\n");
  35 #ifndef CONFIG_DM_SCSI
  36                         scsi_bus_reset(NULL);
  37 #endif
  38                         ret = scsi_scan(true);
  39                         if (ret)
  40                                 return CMD_RET_FAILURE;
  41                         return ret;
  42                 }
  43                 if (strncmp(argv[1], "scan", 4) == 0) {
  44                         ret = scsi_scan(true);
  45                         if (ret)
  46                                 return CMD_RET_FAILURE;
  47                         return ret;
  48                 }
  49         }
  50
  51         return blk_common_cmd(argc, argv, IF_TYPE_SCSI, &scsi_curr_dev);
  52 }
  53
  54 U_BOOT_CMD(
  55         scsi, 5, 1, do_scsi,
  56         "SCSI sub-system",
  57         "reset - reset SCSI controller\n"
  58         "scsi info  - show available SCSI devices\n"
  59         "scsi scan  - (re-)scan SCSI bus\n"
  60         "scsi device [dev] - show or set current device\n"
  61         "scsi part [dev] - print partition table of one or all SCSI devices\n"
  62         "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
  63         "     to memory address `addr'\n"
  64         "scsi write addr blk# cnt - write `cnt' blocks starting at block\n"
  65         "     `blk#' from memory address `addr'"
  66 );
  67
  68 U_BOOT_CMD(
  69         scsiboot, 3, 1, do_scsiboot,
  70         "boot from SCSI device",
  71         "loadAddr dev:part"
  72 );