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https://github.com/AsahiLinux/u-boot
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a76b60f820
It is better to clear the console device rather than the video device, since the console has the text display. We also need to reset the cursor position with the console, but not with the video device. Add a new function to handle this and update the 'cls' command to use it. Signed-off-by: Simon Glass <sjg@chromium.org>
35 lines
794 B
C
35 lines
794 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2018
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* DENX Software Engineering, Anatolij Gustschin <agust@denx.de>
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*
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* cls - clear screen command
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*/
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#include <common.h>
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#include <command.h>
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#include <dm.h>
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#include <video_console.h>
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#define CSI "\x1b["
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static int do_video_clear(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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__maybe_unused struct udevice *dev;
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/* Send clear screen and home */
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printf(CSI "2J" CSI "1;1H");
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if (IS_ENABLED(CONFIG_VIDEO_ANSI))
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return 0;
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if (IS_ENABLED(CONFIG_VIDEO)) {
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if (uclass_first_device_err(UCLASS_VIDEO_CONSOLE, &dev))
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return CMD_RET_FAILURE;
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if (vidconsole_clear_and_reset(dev))
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return CMD_RET_FAILURE;
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}
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return CMD_RET_SUCCESS;
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}
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U_BOOT_CMD(cls, 1, 1, do_video_clear, "clear screen", "");
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