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tools: kwboot: Check if baudrate value is supported before sending image

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Call kwboot_open_tty() which baudrate value which was specified at the
command line by option -B. This function returns error if baudrate is not
supported by selected tty device.

Initial baudrate for image transfer is always 115200, so call
kwboot_tty_change_baudrate() with value 115200 immediately after
kwboot_open_tty() if baudrate specified by option -B is different than
115200.

This makes kwboot fail immediately, informing that baudrate is unsupported,
instead of failing only after the first part of image is already sent.

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 19:03:08 +01:00
committed by Stefan Roese
parent a79dea2912
commit 3782f55ae8
1 changed files with 13 additions and 1 deletions
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14
tools/kwboot.c
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@@ -2139,12 +2139,24 @@ main(int argc, char **argv)
goto usage;
}
tty = kwboot_open_tty(ttypath, imgpath ? 115200 : baudrate);
tty = kwboot_open_tty(ttypath, baudrate);
if (tty < 0) {
perror(ttypath);
goto out;
}
/*
* initial baudrate for image transfer is always 115200,
* the change to different baudrate is done only after the header is sent
*/
if (imgpath && baudrate != 115200) {
rc = kwboot_tty_change_baudrate(tty, 115200);
if (rc) {
perror(ttypath);
goto out;
}
}
if (baudrate == 115200)
/* do not change baudrate during Xmodem to the same value */
baudrate = 0;