xref: /openbmc/u-boot/cmd/hash.c (revision 7ffe3cd6)
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  *
10  * SPDX-License-Identifier:	GPL-2.0+
11  */
12 
13 #include <common.h>
14 #include <command.h>
15 #include <hash.h>
16 #include <linux/ctype.h>
17 
18 static int do_hash(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
19 {
20 	char *s;
21 	int flags = HASH_FLAG_ENV;
22 
23 #ifdef CONFIG_HASH_VERIFY
24 	if (argc < 4)
25 		return CMD_RET_USAGE;
26 	if (!strcmp(argv[1], "-v")) {
27 		flags |= HASH_FLAG_VERIFY;
28 		argc--;
29 		argv++;
30 	}
31 #endif
32 	/* Move forward to 'algorithm' parameter */
33 	argc--;
34 	argv++;
35 	for (s = *argv; *s; s++)
36 		*s = tolower(*s);
37 	return hash_command(*argv, flags, cmdtp, flag, argc - 1, argv + 1);
38 }
39 
40 #ifdef CONFIG_HASH_VERIFY
41 #define HARGS 6
42 #else
43 #define HARGS 5
44 #endif
45 
46 U_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 #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"
55 #endif
56 );
57