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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2003 Linux Networx
* Copyright (C) 2003 SuSE Linux AG
* Copyright (C) 2004 Tyan Computer
* Written by Yinghai Lu <yhlu@tyan.com> for Tyan Computer.
* Copyright (C) 2006,2007 AMD
* Written by Yinghai Lu <yinghai.lu@amd.com> for AMD.
* Copyright (C) 2007 Silicon Integrated Systems Corp. (SiS)
* Written by Morgan Tsai <my_tsai@sis.com> for SiS.
*
* 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
*/
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pnp.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <pc80/mc146818rtc.h>
#include <pc80/isa-dma.h>
#include <arch/io.h>
#include <arch/ioapic.h>
#include <cpu/x86/lapic.h>
#include <stdlib.h>
#include "sis966.h"
#include <pc80/keyboard.h>
#define NMI_OFF 0
// 0x7a or e3
#define PREVIOUS_POWER_STATE 0x7A
#define MAINBOARD_POWER_OFF 0
#define MAINBOARD_POWER_ON 1
#define SLOW_CPU_OFF 0
#define SLOW_CPU__ON 1
#ifndef CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL
#define CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL MAINBOARD_POWER_ON
#endif
#undef SLAVE_INIT
static void lpc_common_init(device_t dev)
{
uint8_t byte;
void *ioapic_base;
/* IO APIC initialization */
byte = pci_read_config8(dev, 0x74);
byte |= (1<<0); // enable APIC
pci_write_config8(dev, 0x74, byte);
ioapic_base = (void *)pci_read_config32(dev, PCI_BASE_ADDRESS_1); // 0x14
setup_ioapic(ioapic_base, 0); // Don't rename IO APIC ID
}
#ifdef SLAVE_INIT
static void lpc_slave_init(device_t dev)
{
lpc_common_init(dev);
}
#endif
static void lpc_usb_legacy_init(device_t dev)
{
uint16_t acpi_base;
acpi_base = (pci_read_config8(dev,0x75) << 8);
outb(inb(acpi_base + 0xbb) |0x80, acpi_base + 0xbb);
outb(inb(acpi_base + 0xba) |0x80, acpi_base + 0xba);
}
static void lpc_init(device_t dev)
{
uint8_t byte;
uint8_t byte_old;
int on;
int nmi_option;
printk(BIOS_DEBUG, "LPC_INIT -------->\n");
pc_keyboard_init();
lpc_usb_legacy_init(dev);
lpc_common_init(dev);
/* power after power fail */
on = CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL;
get_option(&on, "power_on_after_fail");
byte = pci_read_config8(dev, PREVIOUS_POWER_STATE);
byte &= ~0x40;
if (!on) {
byte |= 0x40;
}
pci_write_config8(dev, PREVIOUS_POWER_STATE, byte);
printk(BIOS_INFO, "set power %s after power fail\n", on?"on":"off");
/* Throttle the CPU speed down for testing */
on = SLOW_CPU_OFF;
get_option(&on, "slow_cpu");
if(on) {
uint16_t pm10_bar;
uint32_t dword;
pm10_bar = (pci_read_config16(dev, 0x60)&0xff00);
outl(((on<<1)+0x10) ,(pm10_bar + 0x10));
dword = inl(pm10_bar + 0x10);
on = 8-on;
printk(BIOS_DEBUG, "Throttling CPU %2d.%1.1d percent.\n",
(on*12)+(on>>1),(on&1)*5);
}
/* Enable Error reporting */
/* Set up sync flood detected */
byte = pci_read_config8(dev, 0x47);
byte |= (1 << 1);
pci_write_config8(dev, 0x47, byte);
/* Set up NMI on errors */
byte = inb(0x70); // RTC70
byte_old = byte;
nmi_option = NMI_OFF;
get_option(&nmi_option, "nmi");
if (nmi_option) {
byte &= ~(1 << 7); /* set NMI */
} else {
byte |= ( 1 << 7); // Can not mask NMI from PCI-E and NMI_NOW
}
if( byte != byte_old) {
outb(byte, 0x70);
}
/* Initialize the real time clock */
cmos_init(0);
/* Initialize isa dma */
isa_dma_init();
printk(BIOS_DEBUG, "LPC_INIT <--------\n");
}
static void sis966_lpc_read_resources(device_t dev)
{
struct resource *res;
/* Get the normal pci resources of this device */
pci_dev_read_resources(dev); // We got one for APIC, or one more for TRAP
/* Add an extra subtractive resource for both memory and I/O. */
res = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0));
res->base = 0;
res->size = 0x1000;
res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE |
IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
res = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0));
res->base = 0xff800000;
res->size = 0x00800000; /* 8 MB for flash */
res->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE |
IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
res = new_resource(dev, 3); /* IOAPIC */
res->base = IO_APIC_ADDR;
res->size = 0x00001000;
res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
}
/**
* Enable resources for children devices.
*
* @param dev The device whose children's resources are to be enabled.
*/
static void sis966_lpc_enable_childrens_resources(device_t dev)
{
struct bus *link;
uint32_t reg, reg_var[4];
int i;
int var_num = 0;
reg = pci_read_config32(dev, 0xa0);
for (link = dev->link_list; link; link = link->next) {
device_t child;
for (child = link->children; child; child = child->sibling) {
if(child->enabled && (child->path.type == DEVICE_PATH_PNP)) {
struct resource *res;
for(res = child->resource_list; res; res = res->next) {
unsigned long base, end; // don't need long long
if(!(res->flags & IORESOURCE_IO)) continue;
base = res->base;
end = resource_end(res);
printk(BIOS_DEBUG, "sis966 lpc decode:%s, base=0x%08lx, end=0x%08lx\n",dev_path(child),base, end);
switch(base) {
case 0x3f8: // COM1
reg |= (1<<0); break;
case 0x2f8: // COM2
reg |= (1<<1); break;
case 0x378: // Parallel 1
reg |= (1<<24); break;
case 0x3f0: // FD0
reg |= (1<<20); break;
case 0x220: // Audio 0
reg |= (1<<8); break;
case 0x300: // Midi 0
reg |= (1<<12); break;
}
if( (base == 0x290) || (base >= 0x400)) {
if(var_num>=4) continue; // only 4 var ; compact them ?
reg |= (1<<(28+var_num));
reg_var[var_num++] = (base & 0xffff)|((end & 0xffff)<<16);
}
}
}
}
}
pci_write_config32(dev, 0xa0, reg);
for(i=0;i<var_num;i++) {
pci_write_config32(dev, 0xa8 + i*4, reg_var[i]);
}
}
static void sis966_lpc_enable_resources(device_t dev)
{
pci_dev_enable_resources(dev);
sis966_lpc_enable_childrens_resources(dev);
}
static void lpci_set_subsystem(device_t dev, unsigned vendor, unsigned device)
{
pci_write_config32(dev, 0x40,
((device & 0xffff) << 16) | (vendor & 0xffff));
}
static struct pci_operations lops_pci = {
.set_subsystem = lpci_set_subsystem,
};
static struct device_operations lpc_ops = {
.read_resources = sis966_lpc_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = sis966_lpc_enable_resources,
.init = lpc_init,
.scan_bus = scan_static_bus,
// .enable = sis966_enable,
.ops_pci = &lops_pci,
};
static const struct pci_driver lpc_driver __pci_driver = {
.ops = &lpc_ops,
.vendor = PCI_VENDOR_ID_SIS,
.device = PCI_DEVICE_ID_SIS_SIS966_LPC,
};
#ifdef SLAVE_INIT // No device?
static struct device_operations lpc_slave_ops = {
.read_resources = sis966_lpc_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = lpc_slave_init,
// .enable = sis966_enable,
.ops_pci = &lops_pci,
};
#endif
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