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