u-boot/cmd/cmd_read.c
Simon Glass 72a8cf8dcc Move all command code into its own directory
There are a lot of unrelated files in common, including all of the commands.
Moving them into their own directory makes them easier to find and is more
logical.

Some commands include non-command code, such as cmd_scsi.c. This should be
sorted out at some point so that the function can be enabled with or without
the associated command.

Unfortunately, with m68k I get this error:

m68k:  +   M5329AFEE
+arch/m68k/cpu/mcf532x/start.o: In function `_start':
+arch/m68k/cpu/mcf532x/start.S:159:(.text+0x452): relocation truncated to fit: R_68K_PC16 against symbol `board_init_f' defined in .text.board_init_f section in common/built-in.o

I hope someone can shed some light on what this means. I hope it isn't
depending on the position of code in the image.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
2016-01-25 10:39:43 -05:00

81 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;
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_desc, 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"
);