From 989cc40f806b68678e10203ec3b63d38d0fdd6eb Mon Sep 17 00:00:00 2001 From: Pali Rohár Date: Mon, 5 Sep 2022 11:31:20 +0200 Subject: serial: Call flush() before changing baudrate MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Changing baudrate is a sensitive operation. To ensure that U-Boot messages printed before changing baudrate are not lost, call new U-Boot console flush() function. Signed-off-by: Pali Rohár Reviewed-by: Simon Glass --- cmd/load.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'cmd') diff --git a/cmd/load.c b/cmd/load.c index e44ae0d56b..5c4f34781d 100644 --- a/cmd/load.c +++ b/cmd/load.c @@ -83,6 +83,7 @@ static int do_load_serial(struct cmd_tbl *cmdtp, int flag, int argc, printf("## Switch baudrate to %d bps and press ENTER ...\n", load_baudrate); udelay(50000); + flush(); gd->baudrate = load_baudrate; serial_setbrg(); udelay(50000); @@ -126,6 +127,7 @@ static int do_load_serial(struct cmd_tbl *cmdtp, int flag, int argc, printf("## Switch baudrate to %d bps and press ESC ...\n", current_baudrate); udelay(50000); + flush(); gd->baudrate = current_baudrate; serial_setbrg(); udelay(50000); @@ -317,6 +319,7 @@ int do_save_serial(struct cmd_tbl *cmdtp, int flag, int argc, printf("## Switch baudrate to %d bps and press ESC ...\n", (int)current_baudrate); udelay(50000); + flush(); gd->baudrate = current_baudrate; serial_setbrg(); udelay(50000); @@ -471,6 +474,7 @@ static int do_load_serial_bin(struct cmd_tbl *cmdtp, int flag, int argc, printf("## Switch baudrate to %d bps and press ENTER ...\n", load_baudrate); udelay(50000); + flush(); gd->baudrate = load_baudrate; serial_setbrg(); udelay(50000); @@ -533,6 +537,7 @@ static int do_load_serial_bin(struct cmd_tbl *cmdtp, int flag, int argc, printf("## Switch baudrate to %d bps and press ESC ...\n", current_baudrate); udelay(50000); + flush(); gd->baudrate = current_baudrate; serial_setbrg(); udelay(50000); -- cgit v1.2.3