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8311ac5fe0
It's almost no extra code to hook up a buddy to the 'read' command. In fact, since the command is passed its own 'struct cmd_tbl', we can use the exact same callback, and let it figure out for itself whether it was invoked as "read" or "write". Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
82 lines
1.7 KiB
C
82 lines
1.7 KiB
C
/*
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* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*/
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#include <common.h>
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#include <command.h>
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#include <mapmem.h>
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#include <part.h>
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static int
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do_rw(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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struct blk_desc *dev_desc = NULL;
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struct disk_partition part_info;
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ulong offset, limit;
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uint blk, cnt, res;
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void *addr;
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int part;
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if (argc != 6) {
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cmd_usage(cmdtp);
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return 1;
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}
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part = part_get_info_by_dev_and_name_or_num(argv[1], argv[2],
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&dev_desc, &part_info, 1);
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if (part < 0)
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return 1;
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addr = map_sysmem(hextoul(argv[3], NULL), 0);
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blk = hextoul(argv[4], NULL);
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cnt = hextoul(argv[5], NULL);
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if (part > 0) {
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offset = part_info.start;
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limit = part_info.size;
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} else {
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/* Largest address not available in struct blk_desc. */
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offset = 0;
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limit = ~0;
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}
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if (cnt + blk > limit) {
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printf("%s out of range\n", cmdtp->name);
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return 1;
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}
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if (IS_ENABLED(CONFIG_CMD_WRITE) && !strcmp(cmdtp->name, "write"))
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res = blk_dwrite(dev_desc, offset + blk, cnt, addr);
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else
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res = blk_dread(dev_desc, offset + blk, cnt, addr);
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if (res != cnt) {
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printf("%s error\n", cmdtp->name);
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return 1;
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}
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return 0;
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}
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#ifdef CONFIG_CMD_READ
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U_BOOT_CMD(
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read, 6, 0, do_rw,
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"Load binary data from a partition",
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"<interface> <dev[:part|#partname]> addr blk# cnt"
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);
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#endif
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#ifdef CONFIG_CMD_WRITE
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U_BOOT_CMD(
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write, 6, 0, do_rw,
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"Store binary data to a partition",
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"<interface> <dev[:part|#partname]> addr blk# cnt"
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);
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#endif
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