cmd/bootcount.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2
   3 #include <command.h>
   4 #include <bootcount.h>
   5
   6 static int do_bootcount_print(struct cmd_tbl *cmdtp, int flag, int argc,
   7                               char *const argv[])
   8 {
   9         printf("%lu\n", bootcount_load());
  10         return CMD_RET_SUCCESS;
  11 }
  12
  13 static int do_bootcount_reset(struct cmd_tbl *cmdtp, int flag, int argc,
  14                               char *const argv[])
  15 {
  16         /*
  17          * note that we're explicitly not resetting the environment
  18          * variable, so you still have the old bootcounter available
  19          */
  20         bootcount_store(0);
  21         return CMD_RET_SUCCESS;
  22 }
  23
  24 static struct cmd_tbl bootcount_sub[] = {
  25         U_BOOT_CMD_MKENT(print, 1, 1, do_bootcount_print, "", ""),
  26         U_BOOT_CMD_MKENT(reset, 1, 1, do_bootcount_reset, "", ""),
  27 };
  28
  29 static int do_bootcount(struct cmd_tbl *cmdtp, int flag, int argc,
  30                         char *const argv[])
  31 {
  32         struct cmd_tbl *cp;
  33
  34         if (argc < 2)
  35                 return CMD_RET_USAGE;
  36
  37         /* drop initial "bootcount" arg */
  38         argc--;
  39         argv++;
  40
  41         cp = find_cmd_tbl(argv[0], bootcount_sub, ARRAY_SIZE(bootcount_sub));
  42         if (cp)
  43                 return cp->cmd(cmdtp, flag, argc, argv);
  44
  45         return CMD_RET_USAGE;
  46 }
  47
  48 U_BOOT_LONGHELP(bootcount,
  49         "print - print current bootcounter\n"
  50         "reset - reset the bootcounter");
  51
  52 U_BOOT_CMD(bootcount, 2, 1, do_bootcount,
  53            "bootcount",
  54            bootcount_help_text
  55 );