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serial: Add Darwin/macOS support for custom and >230400 baudrates

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This change is based on the patch proposed by Denis Ahrens in
https://review.coreboot.org/c/flashrom/+/67822

Change-Id: I3e6b88d2b4c2a130b16456752681fd9f807bf6f0
Signed-off-by: Peter Stuge <peter@stuge.se>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/70571
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Thomas Heijligen <src@posteo.de>
This commit is contained in:
Peter Stuge
2022-12-11 16:20:16 +01:00
committed by Thomas Heijligen
parent cd84b8de76
commit 03c36be3b6
4 changed files with 71 additions and 0 deletions
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61
custom_baud_darwin.c Normal file
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/*
* This file is part of the flashrom project.
*
* Copyright (C) 2022 Peter Stuge <peter@stuge.se>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <termios.h>
#include <sys/ioctl.h>
#include <IOKit/serial/ioss.h>
#include <errno.h>
#include "custom_baud.h"
int use_custom_baud(unsigned int baud, const struct baudentry *baudtable)
{
int i;
if (baud > 230400)
return 1;
for (i = 0; baudtable[i].baud; i++) {
if (baudtable[i].baud == baud)
return 0;
if (baudtable[i].baud > baud)
return 1;
}
return 1;
}
int set_custom_baudrate(int fd, unsigned int baud, const enum custom_baud_stage stage, void *tio_wanted)
{
struct termios *wanted;
speed_t speed;
switch (stage) {
case BEFORE_FLAGS:
break;
case WITH_FLAGS:
wanted = tio_wanted;
return cfsetspeed(wanted, B19200);
case AFTER_FLAGS:
speed = baud;
return ioctl(fd, IOSSIOSPEED, &speed);
}
return 0;
}