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This command is being introduced with the goal of allowing user-friendly
"generic use case" U-Boot builds to pause until user input under some
situations.
The main use case would be when a boot failure happens, to pause until
the user has had time to acknowledge the current state.
Tested using:
make && ./u-boot -v -T -c 'ut lib lib_test_hush_pause'
Signed-off-by: Samuel Dionne-Riel <samuel@dionne-riel.com>
Cc: Simon Glass <sjg@chromium.org>
33 lines
716 B
C
33 lines
716 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2021
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* Samuel Dionne-Riel <samuel@dionne-riel.com>
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*/
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#include <command.h>
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#include <stdio.h>
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static int do_pause(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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char *message = "Press any key to continue...";
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if (argc == 2)
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message = argv[1];
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/* No newline, so it sticks to the bottom of the screen */
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printf("%s", message);
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/* Wait on "any" key... */
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(void) getchar();
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/* Since there was no newline, we need it now */
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printf("\n");
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return CMD_RET_SUCCESS;
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}
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U_BOOT_CMD(pause, 2, 1, do_pause,
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"delay until user input",
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"[prompt] - Wait until users presses any key. [prompt] can be used to customize the message.\n"
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);
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