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* This file is part of the coreboot project.
* Copyright (C) 2008 Arastra, Inc.
* 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
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include <arch/romcc_io.h>
#include "i3100.h"
static void i3100_sio_write(u8 port, u8 ldn, u8 index,
u8 value)
outb(0x07, port);
outb(ldn, port + 1);
outb(index, port);
outb(value, port + 1);
static void i3100_enable_serial(u8 port, u8 ldn, u16 iobase)
/* Enter configuration state */
outb(0x80, port);
outb(0x86, port);
/* Enable serial port */
i3100_sio_write(port, ldn, 0x30, 0x01);
/* Set serial port IO region */
i3100_sio_write(port, ldn, 0x60, (iobase >> 8) & 0xff);
i3100_sio_write(port, ldn, 0x61, iobase & 0xff);
/* Enable device interrupts, set UART_CLK predivide to 26 */
i3100_sio_write(port, 0x00, 0x29, 0x0b);
/* Exit configuration state */
outb(0x68, port);
outb(0x08, port);