12e192b24SSimon Glass /*
22e192b24SSimon Glass * Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
32e192b24SSimon Glass * Use of this source code is governed by a BSD-style license that can be
42e192b24SSimon Glass * found in the LICENSE file.
52e192b24SSimon Glass *
62e192b24SSimon Glass * Alternatively, this software may be distributed under the terms of the
72e192b24SSimon Glass * GNU General Public License ("GPL") version 2 as published by the Free
82e192b24SSimon Glass * Software Foundation.
92e192b24SSimon Glass */
102e192b24SSimon Glass
112e192b24SSimon Glass #include <common.h>
122e192b24SSimon Glass #include <command.h>
132e192b24SSimon Glass #include <part.h>
142e192b24SSimon Glass
do_read(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])152e192b24SSimon Glass int do_read(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
162e192b24SSimon Glass {
172e192b24SSimon Glass char *ep;
184101f687SSimon Glass struct blk_desc *dev_desc = NULL;
192e192b24SSimon Glass int dev;
202e192b24SSimon Glass int part = 0;
212e192b24SSimon Glass disk_partition_t part_info;
222e192b24SSimon Glass ulong offset = 0u;
232e192b24SSimon Glass ulong limit = 0u;
242e192b24SSimon Glass void *addr;
252e192b24SSimon Glass uint blk;
262e192b24SSimon Glass uint cnt;
272e192b24SSimon Glass
282e192b24SSimon Glass if (argc != 6) {
292e192b24SSimon Glass cmd_usage(cmdtp);
302e192b24SSimon Glass return 1;
312e192b24SSimon Glass }
322e192b24SSimon Glass
332e192b24SSimon Glass dev = (int)simple_strtoul(argv[2], &ep, 16);
342e192b24SSimon Glass if (*ep) {
352e192b24SSimon Glass if (*ep != ':') {
362e192b24SSimon Glass printf("Invalid block device %s\n", argv[2]);
372e192b24SSimon Glass return 1;
382e192b24SSimon Glass }
392e192b24SSimon Glass part = (int)simple_strtoul(++ep, NULL, 16);
402e192b24SSimon Glass }
412e192b24SSimon Glass
42db1d9e78SSimon Glass dev_desc = blk_get_dev(argv[1], dev);
432e192b24SSimon Glass if (dev_desc == NULL) {
442e192b24SSimon Glass printf("Block device %s %d not supported\n", argv[1], dev);
452e192b24SSimon Glass return 1;
462e192b24SSimon Glass }
472e192b24SSimon Glass
482e192b24SSimon Glass addr = (void *)simple_strtoul(argv[3], NULL, 16);
492e192b24SSimon Glass blk = simple_strtoul(argv[4], NULL, 16);
502e192b24SSimon Glass cnt = simple_strtoul(argv[5], NULL, 16);
512e192b24SSimon Glass
522e192b24SSimon Glass if (part != 0) {
533e8bd469SSimon Glass if (part_get_info(dev_desc, part, &part_info)) {
542e192b24SSimon Glass printf("Cannot find partition %d\n", part);
552e192b24SSimon Glass return 1;
562e192b24SSimon Glass }
572e192b24SSimon Glass offset = part_info.start;
582e192b24SSimon Glass limit = part_info.size;
592e192b24SSimon Glass } else {
604101f687SSimon Glass /* Largest address not available in struct blk_desc. */
612e192b24SSimon Glass limit = ~0;
622e192b24SSimon Glass }
632e192b24SSimon Glass
642e192b24SSimon Glass if (cnt + blk > limit) {
652e192b24SSimon Glass printf("Read out of range\n");
662e192b24SSimon Glass return 1;
672e192b24SSimon Glass }
682e192b24SSimon Glass
69*d03618d5STom Rini if (blk_dread(dev_desc, offset + blk, cnt, addr) != cnt) {
702e192b24SSimon Glass printf("Error reading blocks\n");
712e192b24SSimon Glass return 1;
722e192b24SSimon Glass }
732e192b24SSimon Glass
742e192b24SSimon Glass return 0;
752e192b24SSimon Glass }
762e192b24SSimon Glass
772e192b24SSimon Glass U_BOOT_CMD(
782e192b24SSimon Glass read, 6, 0, do_read,
792e192b24SSimon Glass "Load binary data from a partition",
802e192b24SSimon Glass "<interface> <dev[:part]> addr blk# cnt"
812e192b24SSimon Glass );
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