LXR uboot/cmd/scsi.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2001
   4 * Denis Peter, MPL AG Switzerland
   5 */
   6
   7/*
   8 * SCSI support.
   9 */
  10#include <common.h>
  11#include <blk.h>
  12#include <command.h>
  13#include <scsi.h>
  14
  15static int scsi_curr_dev; /* current device */
  16
  17/*
  18 * scsi boot command intepreter. Derived from diskboot
  19 */
  20static int do_scsiboot(struct cmd_tbl *cmdtp, int flag, int argc,
  21                       char *const argv[])
  22{
  23        return common_diskboot(cmdtp, "scsi", argc, argv);
  24}
  25
  26/*
  27 * scsi command intepreter
  28 */
  29static int do_scsi(struct cmd_tbl *cmdtp, int flag, int argc,
  30                   char *const argv[])
  31{
  32        int ret;
  33
  34        if (argc == 2) {
  35                if (strncmp(argv[1], "res", 3) == 0) {
  36                        printf("\nReset SCSI\n");
  37#ifndef CONFIG_DM_SCSI
  38                        scsi_bus_reset(NULL);
  39#endif
  40                        ret = scsi_scan(true);
  41                        if (ret)
  42                                return CMD_RET_FAILURE;
  43                        return ret;
  44                }
  45                if (strncmp(argv[1], "scan", 4) == 0) {
  46                        ret = scsi_scan(true);
  47                        if (ret)
  48                                return CMD_RET_FAILURE;
  49                        return ret;
  50                }
  51        }
  52
  53        return blk_common_cmd(argc, argv, IF_TYPE_SCSI, &scsi_curr_dev);
  54}
  55
  56U_BOOT_CMD(
  57        scsi, 5, 1, do_scsi,
  58        "SCSI sub-system",
  59        "reset - reset SCSI controller\n"
  60        "scsi info  - show available SCSI devices\n"
  61        "scsi scan  - (re-)scan SCSI bus\n"
  62        "scsi device [dev] - show or set current device\n"
  63        "scsi part [dev] - print partition table of one or all SCSI devices\n"
  64        "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
  65        "     to memory address `addr'\n"
  66        "scsi write addr blk# cnt - write `cnt' blocks starting at block\n"
  67        "     `blk#' from memory address `addr'"
  68);
  69
  70U_BOOT_CMD(
  71        scsiboot, 3, 1, do_scsiboot,
  72        "boot from SCSI device",
  73        "loadAddr dev:part"
  74);
  75