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tools: kwboot: Fix initializing tty device

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Retrieve current terminal settings via tcgetattr(), set to raw mode with
cfmakeraw(), enable receiver via CREAD and ignore modem control lines
via CLOCAL.

Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Pali Rohár 2021-09-24 23:07:08 +02:00 committed by Stefan Roese
parent 99a3d02370
commit c704e0e1df
1 changed files with 5 additions and 4 deletions
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9
tools/kwboot.c
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@ -648,11 +648,12 @@ kwboot_open_tty(const char *path, int baudrate)
if (fd < 0)
goto out;
memset(&tio, 0, sizeof(tio));
tio.c_iflag = 0;
tio.c_cflag = CREAD|CLOCAL|CS8;
rc = tcgetattr(fd, &tio);
if (rc)
goto out;
cfmakeraw(&tio);
tio.c_cflag |= CREAD|CLOCAL;
tio.c_cc[VMIN] = 1;
tio.c_cc[VTIME] = 10;