1 2e192b24SSimon Glass /*
2 2e192b24SSimon Glass * Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
3 2e192b24SSimon Glass * Use of this source code is governed by a BSD-style license that can be
4 2e192b24SSimon Glass * found in the LICENSE file.
5 2e192b24SSimon Glass *
6 2e192b24SSimon Glass * Alternatively, this software may be distributed under the terms of the
7 2e192b24SSimon Glass * GNU General Public License ("GPL") version 2 as published by the Free
8 2e192b24SSimon Glass * Software Foundation.
9 2e192b24SSimon Glass */
10 2e192b24SSimon Glass
11 2e192b24SSimon Glass #include <common.h>
12 2e192b24SSimon Glass #include <command.h>
13 2e192b24SSimon Glass #include <part.h>
14 2e192b24SSimon Glass
do_read(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])15 2e192b24SSimon Glass int do_read(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
16 2e192b24SSimon Glass {
17 2e192b24SSimon Glass char *ep;
18 4101f687SSimon Glass struct blk_desc *dev_desc = NULL;
19 2e192b24SSimon Glass int dev;
20 2e192b24SSimon Glass int part = 0;
21 2e192b24SSimon Glass disk_partition_t part_info;
22 2e192b24SSimon Glass ulong offset = 0u;
23 2e192b24SSimon Glass ulong limit = 0u;
24 2e192b24SSimon Glass void *addr;
25 2e192b24SSimon Glass uint blk;
26 2e192b24SSimon Glass uint cnt;
27 2e192b24SSimon Glass
28 2e192b24SSimon Glass if (argc != 6) {
29 2e192b24SSimon Glass cmd_usage(cmdtp);
30 2e192b24SSimon Glass return 1;
31 2e192b24SSimon Glass }
32 2e192b24SSimon Glass
33 2e192b24SSimon Glass dev = (int)simple_strtoul(argv[2], &ep, 16);
34 2e192b24SSimon Glass if (*ep) {
35 2e192b24SSimon Glass if (*ep != ':') {
36 2e192b24SSimon Glass printf("Invalid block device %s\n", argv[2]);
37 2e192b24SSimon Glass return 1;
38 2e192b24SSimon Glass }
39 2e192b24SSimon Glass part = (int)simple_strtoul(++ep, NULL, 16);
40 2e192b24SSimon Glass }
41 2e192b24SSimon Glass
42 db1d9e78SSimon Glass dev_desc = blk_get_dev(argv[1], dev);
43 2e192b24SSimon Glass if (dev_desc == NULL) {
44 2e192b24SSimon Glass printf("Block device %s %d not supported\n", argv[1], dev);
45 2e192b24SSimon Glass return 1;
46 2e192b24SSimon Glass }
47 2e192b24SSimon Glass
48 2e192b24SSimon Glass addr = (void *)simple_strtoul(argv[3], NULL, 16);
49 2e192b24SSimon Glass blk = simple_strtoul(argv[4], NULL, 16);
50 2e192b24SSimon Glass cnt = simple_strtoul(argv[5], NULL, 16);
51 2e192b24SSimon Glass
52 2e192b24SSimon Glass if (part != 0) {
53 3e8bd469SSimon Glass if (part_get_info(dev_desc, part, &part_info)) {
54 2e192b24SSimon Glass printf("Cannot find partition %d\n", part);
55 2e192b24SSimon Glass return 1;
56 2e192b24SSimon Glass }
57 2e192b24SSimon Glass offset = part_info.start;
58 2e192b24SSimon Glass limit = part_info.size;
59 2e192b24SSimon Glass } else {
60 4101f687SSimon Glass /* Largest address not available in struct blk_desc. */
61 2e192b24SSimon Glass limit = ~0;
62 2e192b24SSimon Glass }
63 2e192b24SSimon Glass
64 2e192b24SSimon Glass if (cnt + blk > limit) {
65 2e192b24SSimon Glass printf("Read out of range\n");
66 2e192b24SSimon Glass return 1;
67 2e192b24SSimon Glass }
68 2e192b24SSimon Glass
69 *d03618d5STom Rini if (blk_dread(dev_desc, offset + blk, cnt, addr) != cnt) {
70 2e192b24SSimon Glass printf("Error reading blocks\n");
71 2e192b24SSimon Glass return 1;
72 2e192b24SSimon Glass }
73 2e192b24SSimon Glass
74 2e192b24SSimon Glass return 0;
75 2e192b24SSimon Glass }
76 2e192b24SSimon Glass
77 2e192b24SSimon Glass U_BOOT_CMD(
78 2e192b24SSimon Glass read, 6, 0, do_read,
79 2e192b24SSimon Glass "Load binary data from a partition",
80 2e192b24SSimon Glass "<interface> <dev[:part]> addr blk# cnt"
81 2e192b24SSimon Glass );
82