From a79dea29127d2840277e6edc0f5c71dc1daec82b Mon Sep 17 00:00:00 2001 From: =?utf8?q?Pali=20Roh=C3=A1r?= Date: Mon, 7 Mar 2022 19:03:07 +0100 Subject: [PATCH] tools: kwboot: Allow to specify custom baudrate only in supported operations MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Custom baudrate different than 115200 may be specified only when kwboot is not going to send boot/debug message pattern or when it is going to send boot message pattern with image file (in which case baudrate change happens after sending kwbimage header). BootROM detects boot/debug message pattern only at baudrate 115200. Signed-off-by: Pali Rohár Reviewed-by: Stefan Roese --- tools/kwboot.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tools/kwboot.c b/tools/kwboot.c index 69d1be0f48..986f27c201 100644 --- a/tools/kwboot.c +++ b/tools/kwboot.c @@ -2133,6 +2133,12 @@ main(int argc, char **argv) if (optind != argc) goto usage; + /* boot and debug message use baudrate 115200 */ + if (((bootmsg && !imgpath) || debugmsg) && baudrate != 115200) { + fprintf(stderr, "Baudrate other than 115200 cannot be used for this operation.\n"); + goto usage; + } + tty = kwboot_open_tty(ttypath, imgpath ? 115200 : baudrate); if (tty < 0) { perror(ttypath); -- 2.39.5