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 pali@kernel.org --- tools/kwboot.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/tools/kwboot.c b/tools/kwboot.c index 69d1be0f4823..986f27c2012a 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);