1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2001
3*4882a593Smuzhiyun * Denis Peter, MPL AG Switzerland
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun /*
9*4882a593Smuzhiyun * SCSI support.
10*4882a593Smuzhiyun */
11*4882a593Smuzhiyun #include <common.h>
12*4882a593Smuzhiyun #include <command.h>
13*4882a593Smuzhiyun #include <scsi.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun static int scsi_curr_dev; /* current device */
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun /*
18*4882a593Smuzhiyun * scsi boot command intepreter. Derived from diskboot
19*4882a593Smuzhiyun */
do_scsiboot(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])20*4882a593Smuzhiyun static int do_scsiboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun return common_diskboot(cmdtp, "scsi", argc, argv);
23*4882a593Smuzhiyun }
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun /*
26*4882a593Smuzhiyun * scsi command intepreter
27*4882a593Smuzhiyun */
do_scsi(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])28*4882a593Smuzhiyun static int do_scsi(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
29*4882a593Smuzhiyun {
30*4882a593Smuzhiyun int ret;
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun if (argc == 2) {
33*4882a593Smuzhiyun if (strncmp(argv[1], "res", 3) == 0) {
34*4882a593Smuzhiyun printf("\nReset SCSI\n");
35*4882a593Smuzhiyun #ifndef CONFIG_DM_SCSI
36*4882a593Smuzhiyun scsi_bus_reset(NULL);
37*4882a593Smuzhiyun #endif
38*4882a593Smuzhiyun ret = scsi_scan(true);
39*4882a593Smuzhiyun if (ret)
40*4882a593Smuzhiyun return CMD_RET_FAILURE;
41*4882a593Smuzhiyun return ret;
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun if (strncmp(argv[1], "scan", 4) == 0) {
44*4882a593Smuzhiyun ret = scsi_scan(true);
45*4882a593Smuzhiyun if (ret)
46*4882a593Smuzhiyun return CMD_RET_FAILURE;
47*4882a593Smuzhiyun return ret;
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun return blk_common_cmd(argc, argv, IF_TYPE_SCSI, &scsi_curr_dev);
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun U_BOOT_CMD(
55*4882a593Smuzhiyun scsi, 5, 1, do_scsi,
56*4882a593Smuzhiyun "SCSI sub-system",
57*4882a593Smuzhiyun "reset - reset SCSI controller\n"
58*4882a593Smuzhiyun "scsi info - show available SCSI devices\n"
59*4882a593Smuzhiyun "scsi scan - (re-)scan SCSI bus\n"
60*4882a593Smuzhiyun "scsi device [dev] - show or set current device\n"
61*4882a593Smuzhiyun "scsi part [dev] - print partition table of one or all SCSI devices\n"
62*4882a593Smuzhiyun "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
63*4882a593Smuzhiyun " to memory address `addr'\n"
64*4882a593Smuzhiyun "scsi write addr blk# cnt - write `cnt' blocks starting at block\n"
65*4882a593Smuzhiyun " `blk#' from memory address `addr'"
66*4882a593Smuzhiyun );
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun U_BOOT_CMD(
69*4882a593Smuzhiyun scsiboot, 3, 1, do_scsiboot,
70*4882a593Smuzhiyun "boot from SCSI device",
71*4882a593Smuzhiyun "loadAddr dev:part"
72*4882a593Smuzhiyun );
73