blob: a3d03810bf39338231cf48912a6dae6525c82c0d [file] [log] [blame]
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2000 AG Electronics Ltd.
* Copyright (C) 2003-2004 Linux Networx
* Copyright (C) 2004 Tyan
*
* 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 <arch/io.h>
#include <device/pnp.h>
#include <stdint.h>
#include "lpc47b397.h"
static void pnp_enter_conf_state(pnp_devfn_t dev)
{
u16 port = dev >> 8;
outb(0x55, port);
}
static void pnp_exit_conf_state(pnp_devfn_t dev)
{
u16 port = dev >> 8;
outb(0xaa, port);
}
void lpc47b397_enable_serial(pnp_devfn_t dev, u16 iobase)
{
pnp_enter_conf_state(dev);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
pnp_set_iobase(dev, PNP_IDX_IO0, iobase);
pnp_set_enable(dev, 1);
pnp_exit_conf_state(dev);
}