/*
* This file is part of the coreboot project.
*
* Copyright (C) 2000 AG Electronics Ltd.
* Copyright (C) 2003-2004 Linux Networx
* Copyright (C) 2004 Tyan
* Copyright (C) 2005 Digital Design Corporation
*
* 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
*/
/* RAM driver for SMSC LPC47B272 Super I/O chip. */
#include <arch/io.h>
#include <device/device.h>
#include <device/pnp.h>
#include <console/console.h>
#include <device/smbus.h>
#include <string.h>
#include <bitops.h>
#include <uart8250.h>
#include <pc80/keyboard.h>
#include <stdlib.h>
#include "chip.h"
#include "lpc47b272.h"
// Forward declarations
static void enable_dev(device_t dev);
void lpc47b272_pnp_set_resources(device_t dev);
void lpc47b272_pnp_set_resources(device_t dev);
void lpc47b272_pnp_enable_resources(device_t dev);
void lpc47b272_pnp_enable(device_t dev);
static void lpc47b272_init(device_t dev);
static void pnp_enter_conf_state(device_t dev);
static void pnp_exit_conf_state(device_t dev);
static void dump_pnp_device(device_t dev);
struct chip_operations superio_smsc_lpc47b272_ops = {
CHIP_NAME("SMSC LPC47B272 Super I/O")
.enable_dev = enable_dev
};
static struct device_operations ops = {
.read_resources = pnp_read_resources,
.set_resources = lpc47b272_pnp_set_resources,
.enable_resources = lpc47b272_pnp_enable_resources,
.enable = lpc47b272_pnp_enable,
.init = lpc47b272_init,
};
static struct pnp_info pnp_dev_info[] = {
{ &ops, LPC47B272_FDC, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, { 0x07f8, 0}, },
{ &ops, LPC47B272_PP, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, { 0x07f8, 0}, },
{ &ops, LPC47B272_SP1, PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, },
{ &ops, LPC47B272_SP2, PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, },
{ &ops, LPC47B272_KBC, PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1, { 0x7ff, 0 }, { 0x7ff, 0x4}, },
{ &ops, LPC47B272_RT, PNP_IO0, { 0x780, 0 }, },
};
/**********************************************************************************/
/* PUBLIC INTERFACE */
/**********************************************************************************/
//----------------------------------------------------------------------------------
// Function: enable_dev
// Parameters: dev - pointer to structure describing a Super I/O device
// Return Value: None
// Description: Create device structures and allocate resources to devices
// specified in the pnp_dev_info array (above).
//
static void enable_dev(device_t dev)
{
pnp_enable_devices(dev, &pnp_ops,
ARRAY_SIZE(pnp_dev_info),
pnp_dev_info);
}
//----------------------------------------------------------------------------------
// Function: lpc47b272_pnp_set_resources
// Parameters: dev - pointer to structure describing a Super I/O device
// Return Value: None
// Description: Configure the specified Super I/O device with the resources
// (I/O space, etc.) that have been allocated for it.
//
void lpc47b272_pnp_set_resources(device_t dev)
{
pnp_enter_conf_state(dev);
pnp_set_resources(dev);
pnp_exit_conf_state(dev);
}
void lpc47b272_pnp_enable_resources(device_t dev)
{
pnp_enter_conf_state(dev);
pnp_enable_resources(dev);
pnp_exit_conf_state(dev);
}
void lpc47b272_pnp_enable(device_t dev)
{
pnp_enter_conf_state(dev);
pnp_set_logical_device(dev);
if(dev->enabled) {
pnp_set_enable(dev, 1);
}
else {
pnp_set_enable(dev, 0);
}
pnp_exit_conf_state(dev);
}
//----------------------------------------------------------------------------------
// Function: lpc47b272_init
// Parameters: dev - pointer to structure describing a Super I/O device
// Return Value: None
// Description: Initialize the specified Super I/O device.
// Devices other than COM ports and the keyboard controller are
// ignored. For COM ports, we configure the baud rate.
//
static void lpc47b272_init(device_t dev)
{
struct superio_smsc_lpc47b272_config *conf = dev->chip_info;
struct resource *res0, *res1;
if (!dev->enabled)
return;
switch(dev->path.pnp.device) {
case LPC47B272_SP1:
res0 = find_resource(dev, PNP_IDX_IO0);
init_uart8250(res0->base, &conf->com1);
break;
case LPC47B272_SP2:
res0 = find_resource(dev, PNP_IDX_IO0);
init_uart8250(res0->base, &conf->com2);
break;
case LPC47B272_KBC:
res0 = find_resource(dev, PNP_IDX_IO0);
res1 = find_resource(dev, PNP_IDX_IO1);
init_pc_keyboard(res0->base, res1->base, &conf->keyboard);
break;
}
}
/**********************************************************************************/
/* PRIVATE FUNCTIONS */
/**********************************************************************************/
//----------------------------------------------------------------------------------
// Function: pnp_enter_conf_state
// Parameters: dev - pointer to structure describing a Super I/O device
// Return Value: None
// Description: Enable access to the LPC47B272's configuration registers.
//
static void pnp_enter_conf_state(device_t dev)
{
outb(0x55, dev->path.pnp.port);
}
//----------------------------------------------------------------------------------
// Function: pnp_exit_conf_state
// Parameters: dev - pointer to structure describing a Super I/O device
// Return Value: None
// Description: Disable access to the LPC47B272's configuration registers.
//
static void pnp_exit_conf_state(device_t dev)
{
outb(0xaa, dev->path.pnp.port);
}
#if 0
//----------------------------------------------------------------------------------
// Function: dump_pnp_device
// Parameters: dev - pointer to structure describing a Super I/O device
// Return Value: None
// Description: Print the values of all of the LPC47B272's configuration registers.
// NOTE: The LPC47B272 must be in configuration mode when this
// function is called.
//
static void dump_pnp_device(device_t dev)
{
int register_index;
print_debug("\r\n");
for(register_index = 0; register_index <= LPC47B272_MAX_CONFIG_REGISTER; register_index++) {
uint8_t register_value;
if ((register_index & 0x0f) == 0) {
print_debug_hex8(register_index);
print_debug_char(':');
}
// Skip over 'register' that would cause exit from configuration mode
if (register_index == 0xaa)
register_value = 0xaa;
else
register_value = pnp_read_config(dev, register_index);
print_debug_char(' ');
print_debug_hex8(register_value);
if ((register_index & 0x0f) == 0x0f) {
print_debug("\r\n");
}
}
print_debug("\r\n");
}
#endif