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Currently the cls command does not support the serial console The screen can be cleared in the video uclass, the colored frame buffer console, and the serial console by sending the same escape sequence. This reduces the cls command to a single printf() statement on most boards. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Simon Glass <sjg@chromium.org>
41 lines
887 B
C
41 lines
887 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 <lcd.h>
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#include <video.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 defined(CONFIG_DM_VIDEO)
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#if !defined(CONFIG_VIDEO_ANSI)
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if (uclass_first_device_err(UCLASS_VIDEO, &dev))
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return CMD_RET_FAILURE;
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if (video_clear(dev))
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return CMD_RET_FAILURE;
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#endif
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#elif defined(CONFIG_CFB_CONSOLE)
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video_clear();
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#elif defined(CONFIG_LCD)
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lcd_clear();
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#else
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return CMD_RET_FAILURE;
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#endif
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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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