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
15 static int scsi_curr_dev; /* current device */
16
17 /*
18 * scsi boot command intepreter. Derived from diskboot
19 */
do_scsiboot(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])20 static 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 */
do_scsi(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])29 static 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
56 U_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
70 U_BOOT_CMD(
71 scsiboot, 3, 1, do_scsiboot,
72 "boot from SCSI device",
73 "loadAddr dev:part"
74 );
75