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tools: kwboot: Allow to specify custom baudrate only in supported operations

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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>
Reviewed-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Pali Rohár 2022-03-07 19:03:07 +01:00 committed by Stefan Roese
parent c96137000e
commit a79dea2912
1 changed files with 6 additions and 0 deletions
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6
tools/kwboot.c
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@ -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);