cmd/pause.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2021
   4  * Samuel Dionne-Riel <samuel@dionne-riel.com>
   5  */
   6
   7 #include <command.h>
   8 #include <stdio.h>
   9
  10 static int do_pause(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
  11 {
  12         char *message = "Press any key to continue...";
  13
  14         if (argc == 2)
  15                 message = argv[1];
  16
  17         /* No newline, so it sticks to the bottom of the screen */
  18         printf("%s", message);
  19
  20         /* Wait on "any" key... */
  21         (void) getchar();
  22
  23         /* Since there was no newline, we need it now */
  24         printf("\n");
  25
  26         return CMD_RET_SUCCESS;
  27 }
  28
  29 U_BOOT_CMD(pause, 2, 1, do_pause,
  30         "delay until user input",
  31         "[prompt] - Wait until users presses any key. [prompt] can be used to customize the message.\n"
  32 );