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