Merge git://git.denx.de/u-boot-mpc85xx
[platform/kernel/u-boot.git] / cmd / scsi.c
1 /*
2  * (C) Copyright 2001
3  * Denis Peter, MPL AG Switzerland
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7
8 /*
9  * SCSI support.
10  */
11 #include <common.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  */
20 static int do_scsiboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
21 {
22         return common_diskboot(cmdtp, "scsi", argc, argv);
23 }
24
25 /*
26  * scsi command intepreter
27  */
28 static int do_scsi(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
29 {
30         int ret;
31
32         switch (argc) {
33         case 0:
34         case 1:
35                 return CMD_RET_USAGE;
36         case 2:
37                 if (strncmp(argv[1], "res", 3) == 0) {
38                         printf("\nReset SCSI\n");
39                         scsi_bus_reset();
40                         ret = scsi_scan(1);
41                         if (ret)
42                                 return CMD_RET_FAILURE;
43                         return ret;
44                 }
45                 if (strncmp(argv[1], "inf", 3) == 0) {
46                         blk_list_devices(IF_TYPE_SCSI);
47                         return 0;
48                 }
49                 if (strncmp(argv[1], "dev", 3) == 0) {
50                         if (blk_print_device_num(IF_TYPE_SCSI, scsi_curr_dev)) {
51                                 printf("\nno SCSI devices available\n");
52                                 return CMD_RET_FAILURE;
53                         }
54
55                         return 0;
56                 }
57                 if (strncmp(argv[1], "scan", 4) == 0) {
58                         ret = scsi_scan(1);
59                         if (ret)
60                                 return CMD_RET_FAILURE;
61                         return ret;
62                 }
63                 if (strncmp(argv[1], "part", 4) == 0) {
64                         if (blk_list_part(IF_TYPE_SCSI))
65                                 printf("\nno SCSI devices available\n");
66                         return 0;
67                 }
68                 return CMD_RET_USAGE;
69         case 3:
70                 if (strncmp(argv[1], "dev", 3) == 0) {
71                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
72
73                         if (!blk_show_device(IF_TYPE_SCSI, dev)) {
74                                 scsi_curr_dev = dev;
75                                 printf("... is now current device\n");
76                         } else {
77                                 return CMD_RET_FAILURE;
78                         }
79                         return 0;
80                 }
81                 if (strncmp(argv[1], "part", 4) == 0) {
82                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
83
84                         if (blk_print_part_devnum(IF_TYPE_SCSI, dev)) {
85                                 printf("\nSCSI device %d not available\n",
86                                        dev);
87                                 return CMD_RET_FAILURE;
88                         }
89                         return 0;
90                 }
91                 return CMD_RET_USAGE;
92         default:
93                 /* at least 4 args */
94                 if (strcmp(argv[1], "read") == 0) {
95                         ulong addr = simple_strtoul(argv[2], NULL, 16);
96                         ulong blk  = simple_strtoul(argv[3], NULL, 16);
97                         ulong cnt  = simple_strtoul(argv[4], NULL, 16);
98                         ulong n;
99
100                         printf("\nSCSI read: device %d block # %ld, count %ld ... ",
101                                scsi_curr_dev, blk, cnt);
102                         n = blk_read_devnum(IF_TYPE_SCSI, scsi_curr_dev, blk,
103                                             cnt, (ulong *)addr);
104                         printf("%ld blocks read: %s\n", n,
105                                n == cnt ? "OK" : "ERROR");
106                         return 0;
107                 } else if (strcmp(argv[1], "write") == 0) {
108                         ulong addr = simple_strtoul(argv[2], NULL, 16);
109                         ulong blk = simple_strtoul(argv[3], NULL, 16);
110                         ulong cnt = simple_strtoul(argv[4], NULL, 16);
111                         ulong n;
112
113                         printf("\nSCSI write: device %d block # %ld, count %ld ... ",
114                                scsi_curr_dev, blk, cnt);
115                         n = blk_write_devnum(IF_TYPE_SCSI, scsi_curr_dev, blk,
116                                              cnt, (ulong *)addr);
117                         printf("%ld blocks written: %s\n", n,
118                                n == cnt ? "OK" : "ERROR");
119                         return 0;
120                 }
121         } /* switch */
122         return CMD_RET_USAGE;
123 }
124
125 U_BOOT_CMD(
126         scsi, 5, 1, do_scsi,
127         "SCSI sub-system",
128         "reset - reset SCSI controller\n"
129         "scsi info  - show available SCSI devices\n"
130         "scsi scan  - (re-)scan SCSI bus\n"
131         "scsi device [dev] - show or set current device\n"
132         "scsi part [dev] - print partition table of one or all SCSI devices\n"
133         "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
134         "     to memory address `addr'\n"
135         "scsi write addr blk# cnt - write `cnt' blocks starting at block\n"
136         "     `blk#' from memory address `addr'"
137 );
138
139 U_BOOT_CMD(
140         scsiboot, 3, 1, do_scsiboot,
141         "boot from SCSI device",
142         "loadAddr dev:part"
143 );