LXR uboot/cmd/hash.c

   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 <common.h>
  13#include <command.h>
  14#include <hash.h>
  15#include <linux/ctype.h>
  16
  17static int do_hash(struct cmd_tbl *cmdtp, int flag, int argc,
  18                   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
  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#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