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/*
* Copyright 2010, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*/
#include <common.h>
#include <command.h>
#include <part.h>
int do_read (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
char *ep;
block_dev_desc_t *dev_desc = NULL;
int dev;
int part = 0;
disk_partition_t part_info;
ulong offset = 0u;
ulong limit = 0u;
void *addr;
uint blk;
uint cnt;
if (argc != 6) {
cmd_usage (cmdtp);
return 1;
}
dev = (int)simple_strtoul (argv[2], &ep, 16);
if (*ep) {
if (*ep != ':') {
printf ("Invalid block device %s\n", argv[2]);
return 1;
}
part = (int)simple_strtoul (++ep, NULL, 16);
}
dev_desc = get_dev (argv[1], dev);
if (dev_desc == NULL) {
printf ("Block device %s %d not supported\n", argv[1], dev);
return 1;
}
addr = (void *)simple_strtoul (argv[3], NULL, 16);
blk = simple_strtoul (argv[4], NULL, 16);
cnt = simple_strtoul (argv[5], NULL, 16);
if (part != 0) {
if (get_partition_info (dev_desc, part, &part_info)) {
printf ("Cannot find partition %d\n", part);
return 1;
}
offset = part_info.start;
limit = part_info.size;
} else {
/* Largest address not available in block_dev_desc_t. */
limit = ~0;
}
if (cnt + blk > limit) {
printf ("Read out of range\n");
return 1;
}
if (dev_desc->block_read (dev, offset + blk, cnt, addr) < 0) {
printf ("Error reading blocks\n");
return 1;
}
return 0;
}
U_BOOT_CMD(
read, 6, 0, do_read,
"Load binary data from a partition",
"<interface> <dev[:part]> addr blk# cnt"
);
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