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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2009 University of Heidelberg
* Written by Mondrian Nuessle <nuessle@uni-heidelberg.de> for Univ. Heidelberg
*
* 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.
*
* 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
*/
/* PILOT Super I/O is only based on LPC observation done on factory system. */
#include <arch/romcc_io.h>
#include "pilot.h"
/* Pilot uses 0x5A/0xA5 pattern to actiavte deactivate config access. */
static inline void pnp_enter_ext_func_mode(device_t dev)
{
unsigned port = dev >> 8;
outb(0x5A, port);
}
static void pnp_exit_ext_func_mode(device_t dev)
{
unsigned port = dev >> 8;
outb(0xA5, port);
}
/* Serial config is a fairly standard procedure. */
static void pilot_enable_serial(device_t dev, unsigned iobase)
{
pnp_enter_ext_func_mode(dev);
pnp_set_logical_device(dev);
pnp_set_iobase(dev, PNP_IDX_IO0, iobase);
pnp_set_enable(dev, 1);
pnp_exit_ext_func_mode(dev);
}
static void pilot_disable_serial(device_t dev)
{
pnp_enter_ext_func_mode(dev);
pnp_set_logical_device(dev);
pnp_set_iobase(dev, PNP_IDX_IO0, 0x00);
pnp_set_enable(dev, 0);
pnp_exit_ext_func_mode(dev);
}
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