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