From bfaa51dd4adf59c1b304399381401bfb58ed4099 Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Fri, 11 Feb 2022 18:11:05 +0100 Subject: [PATCH] cmd: add serial console support for the cls command 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 Reviewed-by: Simon Glass --- cmd/cls.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/cmd/cls.c b/cmd/cls.c index eab4e6993b..bdeb49786d 100644 --- a/cmd/cls.c +++ b/cmd/cls.c @@ -11,17 +11,23 @@ #include #include +#define CSI "\x1b[" + static int do_video_clear(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { -#if defined(CONFIG_DM_VIDEO) - struct udevice *dev; + __maybe_unused struct udevice *dev; + /* Send clear screen and home */ + printf(CSI "2J" CSI "1;1H"); +#if defined(CONFIG_DM_VIDEO) +#if !defined(CONFIG_VIDEO_ANSI) if (uclass_first_device_err(UCLASS_VIDEO, &dev)) return CMD_RET_FAILURE; if (video_clear(dev)) return CMD_RET_FAILURE; +#endif #elif defined(CONFIG_CFB_CONSOLE) video_clear(); #elif defined(CONFIG_LCD)