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[people/ms/u-boot.git] / cmd / hash.c
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1/*
2 * Copyright (c) 2012 The Chromium OS Authors.
3 *
4 * (C) Copyright 2011
5 * Joe Hershberger, National Instruments, joe.hershberger@ni.com
6 *
7 * (C) Copyright 2000
8 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
9 *
1a459660 10 * SPDX-License-Identifier: GPL-2.0+
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11 */
12
13#include <common.h>
14#include <command.h>
15#include <hash.h>
218da0f3 16#include <linux/ctype.h>
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17
18static int do_hash(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
19{
218da0f3 20 char *s;
d5b76673 21 int flags = HASH_FLAG_ENV;
bf36c5d5 22
3ef46a99 23#ifdef CONFIG_HASH_VERIFY
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24 if (argc < 4)
25 return CMD_RET_USAGE;
bf36c5d5 26 if (!strcmp(argv[1], "-v")) {
d5b76673 27 flags |= HASH_FLAG_VERIFY;
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28 argc--;
29 argv++;
30 }
31#endif
32 /* Move forward to 'algorithm' parameter */
33 argc--;
34 argv++;
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35 for (s = *argv; *s; s++)
36 *s = tolower(*s);
d5b76673 37 return hash_command(*argv, flags, cmdtp, flag, argc - 1, argv + 1);
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38}
39
40#ifdef CONFIG_HASH_VERIFY
3ef46a99 41#define HARGS 6
bf36c5d5 42#else
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43#define HARGS 5
44#endif
45
bf36c5d5 46U_BOOT_CMD(
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47 hash, HARGS, 1, do_hash,
48 "compute hash message digest",
49 "algorithm address count [[*]hash_dest]\n"
bf36c5d5 50 " - compute message digest [save to env var / *address]"
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51#ifdef CONFIG_HASH_VERIFY
52 "\nhash -v algorithm address count [*]hash\n"
53 " - verify message digest of memory area to immediate value, \n"
54 " env var or *address"
bf36c5d5 55#endif
3ef46a99 56);