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			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, UCLASS_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