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
14 static int scsi_curr_dev; /* current device */
15
16 /*
17 * scsi boot command intepreter. Derived from diskboot
18 */
do_scsiboot(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])19 static 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 */
do_scsi(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])27 static 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
53 U_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
67 U_BOOT_CMD(
68 scsiboot, 3, 1, do_scsiboot,
69 "boot from SCSI device",
70 "loadAddr dev:part"
71 );
72