82 lines
1.7 KiB
C
82 lines
1.7 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
|
||
|
|
* Use of this source code is governed by a BSD-style license that can be
|
||
|
|
* found in the LICENSE file.
|
||
|
|
*
|
||
|
|
* 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;
|
||
|
|
struct blk_desc *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 = blk_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 (part_get_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 struct blk_desc. */
|
||
|
|
limit = ~0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (cnt + blk > limit) {
|
||
|
|
printf("Read out of range\n");
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (blk_dread(dev_desc, offset + blk, cnt, addr) != cnt) {
|
||
|
|
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"
|
||
|
|
);
|