This patch adds support for the Intel i82810 northbridge and various i82801xx

southbridges, along with the Asus MEW-VM. With this, my machine attempts to
boot linux, but does so very slowly and fails during the boot process, probably
because of the irq tables.

Signed-off-by: Corey Osgood <corey.osgood@gmail.com>
Acked-by: Joseph Smith <joe@smittys.pointclark.net>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2719 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

18 files changed, 1633 insertions, 0 deletions

diff --git a/src/southbridge/intel/i82801xx/Config.lb b/src/southbridge/intel/i82801xx/Config.lb
new file mode 100644
index 0000000000..5f18ef89c3
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/Config.lb
@@ -0,0 +1,30 @@
+##
+## This file is part of the LinuxBIOS project.
+##
+## Copyright (C) 2007 Corey Osgood <corey.osgood@gmail.com>
+##
+## 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
+##
+driver i82801xx.o
+driver i82801xx_usb.o
+driver i82801xx_lpc.o
+driver i82801xx_ide.o
+driver i82801xx_usb_ehci.o
+driver i82801xx_ac97.o
+driver i82801xx_nic.o
+driver i82801xx_pci.o
+driver i82801xx_sata.o
+object i82801xx_reset.o
+object i82801xx_watchdog.o
diff --git a/src/southbridge/intel/i82801xx/chip.h b/src/southbridge/intel/i82801xx/chip.h
new file mode 100644
index 0000000000..3c1a3fd6d9
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/chip.h
@@ -0,0 +1,39 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2007 Corey Osgood <corey_osgood@verizon.net>
+ *
+ * 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
+ */
+
+#ifndef IGNORE_I82801XX_DEVICE_LIST
+#warning "The i82801xx code currently supports, on a testing/experimental basis," 
+#warning "these devices:"
+#warning "i82801aa, i82801ab, i82801ba, i82801ca, i82801db, i82801dbm, i82801eb,"
+#warning "and i82801er."
+#warning "Using this without modification on any other i82801 version will probably"
+#warning "work until ram init, but will fail after that"
+#endif
+
+#ifndef SOUTHBRIDGE_INTEL_I82801XX_CHIP_H
+#define SOUTHBRIDGE_INTEL_I82801XX_CHIP_H
+
+struct southbridge_intel_i82801xx_config 
+{
+};
+
+extern struct chip_operations southbridge_intel_i82801xx_ops;
+
+#endif /* SOUTHBRIDGE_INTEL_I82801XX_CHIP_H */
diff --git a/src/southbridge/intel/i82801xx/cmos_failover.c b/src/southbridge/intel/i82801xx/cmos_failover.c
new file mode 100644
index 0000000000..2e1d84adb8
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/cmos_failover.c
@@ -0,0 +1,32 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * 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 "i82801xx.h"
+
+static void check_cmos_failed(void) 
+{
+	uint8_t byte;
+	byte = pci_read_config8(PCI_DEV(0, 0x1f, 0), GEN_PMCON_3);
+	if( byte & RTC_FAILED) {
+		//clear bit 1 and bit 2
+		byte = cmos_read(RTC_BOOT_BYTE);
+		byte &= 0x0c;
+		byte |= MAX_REBOOT_CNT << 4;
+		cmos_write(byte, RTC_BOOT_BYTE);
+	}
+}
diff --git a/src/southbridge/intel/i82801xx/i82801xx.c b/src/southbridge/intel/i82801xx/i82801xx.c
new file mode 100644
index 0000000000..5cceab9b9b
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/i82801xx.c
@@ -0,0 +1,67 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2005 Digital Design Corporation
+ * (Written by Steven J. Magnani <steve@digidescorp.com> for Digital Design Corp)
+ * Copyright (C) 2007 Corey Osgood <corey.osgood@gmail.com>
+ *
+ * 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 "i82801xx.h"
+
+void i82801xx_enable(device_t dev)
+{
+	unsigned int index = 0;
+	uint16_t cur_disable_mask, new_disable_mask;
+
+	// All 82801 devices should be on bus 0
+	unsigned int devfn = PCI_DEVFN(0x1f, 0); // lpc
+	device_t lpc_dev = dev_find_slot(0, devfn); // 0
+	if (!lpc_dev)
+		return;
+
+	/* We're going to assume, perhaps incorrectly, that if a function exists
+	it can be disabled. Workarounds for ICH variants that don't follow this 
+	should be done by checking the device ID */
+
+	if (PCI_SLOT(dev->path.u.pci.devfn) == 31) {
+		index = PCI_FUNC(dev->path.u.pci.devfn);
+	} else if (PCI_SLOT(dev->path.u.pci.devfn) == 29) {
+		index = 8 + PCI_FUNC(dev->path.u.pci.devfn);
+	}
+	
+	/* Function 0 is a bit of an exception */
+	if(index == 0)
+	{
+		index = 14;
+	}
+	cur_disable_mask = pci_read_config16(lpc_dev, FUNC_DIS);
+	new_disable_mask = cur_disable_mask & ~(1 << index); // enable it
+	if (!dev->enabled) {
+		new_disable_mask |= (1 << index);  // disable it, if desired
+	}
+	if (new_disable_mask != cur_disable_mask) {
+		pci_write_config16(lpc_dev, FUNC_DIS, new_disable_mask);
+	}
+}
+
+struct chip_operations southbridge_intel_i82801xx_ops = {
+	CHIP_NAME("Intel i82801 Series Southbridge")
+	.enable_dev = i82801xx_enable,
+};
diff --git a/src/southbridge/intel/i82801xx/i82801xx.h b/src/southbridge/intel/i82801xx/i82801xx.h
new file mode 100644
index 0000000000..273767949e
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/i82801xx.h
@@ -0,0 +1,106 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2007 Corey Osgood <corey.osgood@gmail.com>
+ *
+ * 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
+ */
+
+#ifndef I82801XX_H
+#define I82801XX_H
+
+#ifndef __ROMCC__
+#include "chip.h"
+extern void i82801xx_enable(device_t dev);
+#endif
+
+#define PCI_DMA_CFG     0x90
+#define SERIRQ_CNTL     0x64
+#define GEN_CNTL        0xd0
+#define GEN_STS         0xd4
+#define RTC_CONF        0xd8
+#define GEN_PMCON_3     0xa4
+
+#define PCICMD          0x04
+#define PMBASE          0x40
+#define PM_BASE_ADDR	0x1100
+#define ACPI_CNTL       0x44
+#define BIOS_CNTL       0x4E
+#define GPIO_BASE	0x58
+#define GPIO_BASE_ADDR	0x1180
+#define GPIO_CNTL       0x5C
+#define PIRQA_ROUT      0x60
+#define PIRQE_ROUT      0x68
+#define COM_DEC         0xE0
+#define LPC_EN          0xE6
+#define FUNC_DIS        0xF2
+
+#define CMD		0x04
+#define SBUS_NUM	0x19
+#define SUB_BUS_NUM	0x1A
+#define SMLT		0x1B
+#define IOBASE		0x1C
+#define IOLIM		0x1D
+#define MEMBASE		0x20
+#define MEMLIM		0x22
+#define CNF		0x50
+#define MTT		0x70
+#define PCI_MAST_STS	0x82
+
+// GEN_PMCON_3 bits
+#define RTC_BATTERY_DEAD	(1 << 2)
+#define RTC_POWER_FAILED	(1 << 1)
+#define SLEEP_AFTER_POWER_FAIL	(1 << 0)
+
+// PCI Configuration Space (D31:F1)
+#define IDE_TIM_PRI		0x40	// IDE timings, primary
+#define IDE_TIM_SEC		0x42	// IDE timings, secondary
+
+// IDE_TIM bits
+#define IDE_DECODE_ENABLE	(1 << 15)
+
+// PCI Configuration Space (D31:F3)
+#define SMB_BASE	0x20
+#define HOSTC		0x40
+
+// HOSTC bits
+#define I2C_EN		(1 << 2)
+#define SMB_SMI_EN	(1 << 1)
+#define HST_EN		(1 << 0)
+
+// SMBus IO bits
+/* TODO: Does it matter where we put the SMBus IO base, as long as we keep 
+   consistent and don't interfere with anything else? */
+//#define SMBUS_IO_BASE 0x1000
+#define SMBUS_IO_BASE	0x0f00
+
+#define SMBHSTSTAT	0x0
+#define SMBHSTCTL	0x2
+#define SMBHSTCMD	0x3
+#define SMBXMITADD	0x4
+#define SMBHSTDAT0	0x5
+#define SMBHSTDAT1	0x6
+#define SMBBLKDAT	0x7
+#define SMBTRNSADD	0x9
+#define SMBSLVDATA	0xa
+#define SMLINK_PIN_CTL	0xe
+#define SMBUS_PIN_CTL	0xf 
+
+#define SMBUS_TIMEOUT	(10 * 1000 * 100)
+
+//HPET, if present
+#define HPET_ADDR		0xfed0000
+
+#endif /* I82801XX_H */
diff --git a/src/southbridge/intel/i82801xx/i82801xx_ac97.c b/src/southbridge/intel/i82801xx/i82801xx_ac97.c
new file mode 100644
index 0000000000..f61e069e96
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/i82801xx_ac97.c
@@ -0,0 +1,113 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2005 Tyan Computer
+ * (Written by Yinghai Lu <yinghailu@gmail.com> for Tyan Computer)
+ *
+ * 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/pci_ids.h>
+#include "i82801xx.h"
+
+static struct device_operations ac97_ops  = {
+	.read_resources   = pci_dev_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init             = 0,
+	.scan_bus         = 0,
+	.enable           = i82801xx_enable,
+};
+
+/* i82801aa */
+static struct pci_driver i82801aa_ac97_audio __pci_driver = {
+	.ops    = &ac97_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2415,
+};
+
+static struct pci_driver i82801aa_ac97_modem __pci_driver = {
+	.ops    = &ac97_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2416,
+};
+
+/* i82801ab */
+static struct pci_driver i82801ab_ac97_audio __pci_driver = {
+	.ops    = &ac97_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2425,
+};
+
+static struct pci_driver i82801ab_ac97_modem __pci_driver = {
+	.ops    = &ac97_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2426,
+};
+
+/* i82801ba */
+static struct pci_driver i82801ba_ac97_audio __pci_driver = {
+	.ops    = &ac97_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2445,
+};
+
+static struct pci_driver i82801ba_ac97_modem __pci_driver = {
+	.ops    = &ac97_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2446,
+};
+
+/* i82801ca */
+static struct pci_driver i82801ca_ac97_audio __pci_driver = {
+	.ops    = &ac97_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2485,
+};
+
+static struct pci_driver i82801ca_ac97_modem __pci_driver = {
+	.ops    = &ac97_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2486,
+};
+
+/* i82801db & i82801dbm */
+static struct pci_driver i82801db_ac97_audio __pci_driver = {
+	.ops    = &ac97_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x24c5,
+};
+
+static struct pci_driver i82801db_ac97_modem __pci_driver = {
+	.ops    = &ac97_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x24c6,
+};
+
+/* i82801eb & i82801er */
+static struct pci_driver i82801ex_ac97_audio __pci_driver = {
+	.ops    = &ac97_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x24d5,
+};
+
+static struct pci_driver i82801ex_ac97_modem __pci_driver = {
+	.ops    = &ac97_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x24d6,
+};
diff --git a/src/southbridge/intel/i82801xx/i82801xx_early_smbus.c b/src/southbridge/intel/i82801xx/i82801xx_early_smbus.c
new file mode 100644
index 0000000000..070cc22a00
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/i82801xx_early_smbus.c
@@ -0,0 +1,74 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2005 Tyan Computer
+ * (Written by Yinghai Lu <yinghailu@gmail.com> for Tyan Computer)
+ * Copyright (C) 2007 Corey Osgood <corey.osgood@gmail.com>
+ *
+ * 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 <device/pci_ids.h>
+#include "i82801xx.h"
+#include "i82801xx_smbus.h"
+
+static void enable_smbus(void)
+{
+	device_t dev;
+	uint16_t device_id;
+	
+	/* Set the SMBus device staticly */
+	dev = PCI_DEV(0x0, 0x1f, 0x3);
+	
+	/* Check to make sure we've got the right device */
+	device_id = pci_read_config16(dev, 0x2);
+	
+	/* Clear bits 7-4, since those are the only bits that vary between models */
+	device_id &= 0xff0f;
+	
+	if(device_id != 0x2403)
+	{
+		die("Device not found, Corey probably screwed up!");
+	}
+	
+	/* Set SMBus I/O base */
+	pci_write_config32(dev, SMB_BASE, SMBUS_IO_BASE | PCI_BASE_ADDRESS_SPACE_IO);
+	/* Set SMBus enable */
+	pci_write_config8(dev, HOSTC, HST_EN);
+	/* Set SMBus I/O space enable */ 
+	pci_write_config16(dev, PCI_COMMAND, PCI_COMMAND_IO);
+	/* Disable interrupt generation */ 
+	outb(0, SMBUS_IO_BASE + SMBHSTCTL);
+	/* Clear any lingering errors, so transactions can run */
+	outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
+	print_debug("SMBus controller enabled\r\n");
+}
+
+static inline int smbus_read_byte(unsigned device, unsigned address)
+{
+	return do_smbus_read_byte(device, address);
+}
+
+static void smbus_write_byte(unsigned device, unsigned address, unsigned char val)
+{
+	print_err("Unimplemented smbus_write_byte() called\r\n");
+	return;
+}
+
+static inline int smbus_write_block(unsigned device, unsigned length, unsigned cmd, 
+		 unsigned data1, unsigned data2)
+{
+	return do_smbus_write_block(device, length, cmd, data1, data2);
+}
diff --git a/src/southbridge/intel/i82801xx/i82801xx_ide.c b/src/southbridge/intel/i82801xx/i82801xx_ide.c
new file mode 100644
index 0000000000..f9bb403014
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/i82801xx_ide.c
@@ -0,0 +1,113 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2005 Tyan Computer
+ * (Written by Yinghai Lu <yinghailu@gmail.com> for Tyan Computer)
+ * Copyright (C) 2005 Digital Design Corporation
+ * (Written by Steven J. Magnani <steve@digidescorp.com> for Digital Design Corp)
+ *
+ * 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/pci_ids.h>
+#include "i82801xx.h"
+
+static void ide_init(struct device *dev)
+{
+	/* TODO: Needs to be tested for compatibility with ICH5(R) */
+	/* Enable ide devices so the linux ide driver will work */
+	uint16_t ideTimingConfig;
+	int enable_primary = 1;
+	int enable_secondary = 1;
+
+	ideTimingConfig = pci_read_config16(dev, IDE_TIM_PRI);
+	ideTimingConfig &= ~IDE_DECODE_ENABLE;
+	if (enable_primary) {
+		/* Enable primary ide interface */
+		ideTimingConfig |= IDE_DECODE_ENABLE;
+		printk_debug("IDE0 ");
+	}
+	pci_write_config16(dev, IDE_TIM_PRI, ideTimingConfig);
+
+	ideTimingConfig = pci_read_config16(dev, IDE_TIM_SEC);
+	ideTimingConfig &= ~IDE_DECODE_ENABLE;
+	if (enable_secondary) {
+		/* Enable secondary ide interface */
+		ideTimingConfig |= IDE_DECODE_ENABLE;
+		printk_debug("IDE1 ");
+	}
+	pci_write_config16(dev, IDE_TIM_SEC, ideTimingConfig);
+}
+
+static struct device_operations ide_ops  = {
+	.read_resources   = pci_dev_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init             = ide_init,
+	.scan_bus         = 0,
+	.enable           = i82801xx_enable,
+};
+
+/* i82801aa */
+static struct pci_driver i82801aa_ide __pci_driver = {
+	.ops    = &ide_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2411,
+};
+
+/* i82801ab */
+static struct pci_driver i82801ab_ide __pci_driver = {
+	.ops    = &ide_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2421,
+};
+
+/* i82801ba */
+static struct pci_driver i82801ba_ide __pci_driver = {
+	.ops    = &ide_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x244b,
+};
+
+/* i82801ca */
+static struct pci_driver i82801ca_ide __pci_driver = {
+	.ops    = &ide_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x248b,
+};
+
+/* i82801db */
+static struct pci_driver i82801db_ide __pci_driver = {
+	.ops    = &ide_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x24cb,
+};
+
+/* i82801dbm */
+static struct pci_driver i82801dbm_ide __pci_driver = {
+	.ops    = &ide_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x24ca,
+};
+
+/* i82801eb & i82801er */
+static struct pci_driver i82801ex_ide __pci_driver = {
+	.ops    = &ide_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x24db,
+};
diff --git a/src/southbridge/intel/i82801xx/i82801xx_lpc.c b/src/southbridge/intel/i82801xx/i82801xx_lpc.c
new file mode 100644
index 0000000000..3f9044c87a
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/i82801xx_lpc.c
@@ -0,0 +1,289 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2003 Linux Networx
+ * Copyright (C) 2003 SuSE Linux AG
+ * Copyright (C) 2005 Tyan Computer
+ * (Written by Yinghai Lu <yinghailu@gmail.com> for Tyan Computer)
+ *
+ * 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
+ */
+ 
+/* from i82801dbm, needs to be fixed to support everything the i82801er does */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <pc80/mc146818rtc.h>
+#include <pc80/isa-dma.h>
+#include <arch/io.h>
+#include "i82801xx.h"
+
+#define NMI_OFF 0
+
+void i82801xx_enable_ioapic( struct device *dev) 
+{
+	uint32_t reg32;
+	volatile uint32_t *ioapic_index = (volatile uint32_t *)0xfec00000;
+	volatile uint32_t *ioapic_data = (volatile uint32_t *)0xfec00010;
+
+	reg32 = pci_read_config32(dev, GEN_CNTL);
+	reg32 |= (3 << 7); /* Enable IOAPIC */
+	reg32 |= (1 << 13); /* Coprocessor error enable */
+	reg32 |= (1 << 1); /* Delayed transaction enable */
+	reg32 |= (1 << 2); /* DMA collection buffer enable */
+	pci_write_config32(dev, GEN_CNTL, reg32);
+	printk_debug("IOAPIC Southbridge enabled %x\n", reg32);
+
+	*ioapic_index = 0;
+	*ioapic_data = (1 << 25);
+
+	*ioapic_index = 0;
+	reg32 = *ioapic_data;
+	printk_debug("Southbridge APIC ID = %x\n", reg32);
+	if(reg32 != (1 << 25))
+		die("APIC Error\n");
+
+	/* TODO: From i82801ca, needed/useful on other ICH? */
+	*ioapic_index = 3;	// Select Boot Configuration register
+	*ioapic_data = 1;	// Use Processor System Bus to deliver interrupts
+}
+
+void i82801xx_enable_serial_irqs( struct device *dev)
+{
+	/* set packet length and toggle silent mode bit */
+	pci_write_config8(dev, SERIRQ_CNTL, (1 << 7)|(1 << 6)|((21 - 17) << 2)|(0 << 0));
+	pci_write_config8(dev, SERIRQ_CNTL, (1 << 7)|(0 << 6)|((21 - 17) << 2)|(0 << 0));
+	/* TODO: Explain/#define the real meaning of these magic numbers ^^^ */
+}
+
+void i82801xx_lpc_route_dma( struct device *dev, uint8_t mask) 
+{
+        uint16_t reg16;
+        int i;
+        reg16 = pci_read_config16(dev, PCI_DMA_CFG);
+        reg16 &= 0x300;
+        for(i = 0; i < 8; i++) {
+                if (i == 4)
+                        continue;
+                reg16 |= ((mask & (1 << i))? 3:1) << (i * 2);
+        }
+        pci_write_config16(dev, PCI_DMA_CFG, reg16);
+}
+
+void i82801xx_rtc_init(struct device *dev)
+{//todo:needs serious cleanup/comments
+        uint8_t reg8;
+        uint32_t reg32;
+        int rtc_failed;
+        byte = pci_read_config8(dev, GEN_PMCON_3);
+        rtc_failed = byte & RTC_BATTERY_DEAD;
+        if (rtc_failed) {
+                reg8 &= ~(1 << 1); /* preserve the power fail state */
+                pci_write_config8(dev, GEN_PMCON_3, reg8);
+        }
+        reg32 = pci_read_config32(dev, GEN_STS);
+        rtc_failed |= reg32 & (1 << 2);
+        rtc_init(rtc_failed);
+}
+
+
+void i82801xx_1f0_misc(struct device *dev)
+{
+	/* TODO: break this down into smaller functions */
+
+	//move to acpi_enable or something
+	/* Set ACPI base address to 0x1100 (I/O space) */
+	pci_write_config32(dev, PMBASE, PM_BASE_ADDR | 1);
+	/* Enable ACPI I/O and power management */
+	pci_write_config8(dev, ACPI_CNTL, 0x10);
+	/* Set GPIO base address to 0x1180 (I/O space) */
+	pci_write_config32(dev, GPIO_BASE, GPIO_BASE_ADDR | 1);
+	/* Enable GPIO */
+	pci_write_config8(dev, GPIO_CNTL, 0x10);
+	
+	//get rid of?
+	/* Route PIRQA to IRQ11, PIRQB to IRQ3, PIRQC to IRQ5, PIRQD to IRQ10 */
+	pci_write_config32(dev, PIRQA_ROUT, 0x0A05030B);
+	/* Route PIRQE to IRQ7. Leave PIRQF - PIRQH unrouted */
+	pci_write_config8(dev, PIRQE_ROUT, 0x07);
+	
+	//move to i82801xx_init
+	/* Prevent LPC disabling, enable parity errors, and SERR# (System Error) */
+	pci_write_config16(dev, PCI_COMMAND, 0x014f);
+	/* Enable access to the upper 128 byte bank of CMOS RAM */
+	pci_write_config8(dev, RTC_CONF, 0x04);
+	/* Decode 0x3F8-0x3FF (COM1) for COMA port, 0x2F8-0x2FF (COM2) for COMB */
+	pci_write_config8(dev, COM_DEC, 0x10);
+	/* LPT decode defaults to 0x378-0x37F and 0x778-0x77F
+	 * Floppy decode defaults to 0x3F0-0x3F5, 0x3F7 */
+	/* Enable: COMA, COMB, LPT, Floppy
+	 * Disable: Microcontroller, Sound, Gameport */
+	pci_write_config16(dev, LPC_EN, 0x000F);
+}
+
+static void enable_hpet(struct device *dev)
+{
+#ifdef HPET_PRESENT
+	uint32_t reg32;
+	uint32_t code = (0 & 0x3);
+
+	reg32 = pci_read_config32(dev, GEN_CNTL);
+	reg32 |= (1 << 17); /* Enable HPET */
+	/*Bits [16:15]Memory Address Range
+	00 FED0_0000h - FED0_03FFh
+	01 FED0_1000h - FED0_13FFh
+	10 FED0_2000h - FED0_23FFh
+	11 FED0_3000h - FED0_33FFh*/
+
+	reg32 &= ~(3 << 15); /* Clear it */
+	reg32 |= (code << 15);
+	/* reg32 is never written to anywhere?? */
+	printk_debug("Enabling HPET @0x%x\n", HPET_ADDR | (code << 12));
+#endif
+}
+
+
+static void lpc_init(struct device *dev)
+{
+	uint8_t byte;
+	int pwr_on = -1;
+	int nmi_option;
+
+	/* IO APIC initialization */
+	i82801xx_enable_ioapic(dev);
+
+	i82801xx_enable_serial_irqs(dev);
+
+	/* TODO: Find out if this is being used/works */
+#ifdef SUSPICIOUS_LOOKING_CODE	
+	/* The ICH-4 datasheet does not mention this configuration register. */ 
+	/* This code may have been inherited (incorrectly) from code for 
+	the AMD 766 southbridge, which *does* support this functionality. */
+
+	/* Posted memory write enable */
+	byte = pci_read_config8(dev, 0x46);
+	pci_write_config8(dev, 0x46, byte | (1<<0)); 
+#endif
+
+	/* power after power fail */
+	/* FIXME this doesn't work! */
+	/* Which state do we want to goto after g3 (power restored)?
+	 * 0 == S0 Full On
+	 * 1 == S5 Soft Off
+	 */
+        pci_write_config8(dev, GEN_PMCON_3, pwr_on?0:1);
+        printk_info("Set power %s if power fails\n", pwr_on?"on":"off");
+
+	/* Set up NMI on errors */
+	byte = inb(0x61);
+	byte &= ~(1 << 3); /* IOCHK# NMI Enable */
+	byte &= ~(1 << 2); /* PCI SERR# Enable */
+	outb(byte, 0x61);
+	byte = inb(0x70);
+
+	nmi_option = NMI_OFF;
+	get_option(&nmi_option, "nmi");
+	if (nmi_option) {			
+		byte &= ~(1 << 7); /* set NMI */
+		outb(byte, 0x70);
+	}
+	
+	/* Initialize the real time clock */
+	i82801xx_rtc_init(dev);
+
+	i82801xx_lpc_route_dma(dev, 0xff);
+
+	/* Initialize isa dma */
+	isa_dma_init();
+
+	i82801xx_1f0_misc(dev);
+	/* Initialize the High Precision Event Timers, if present */
+	enable_hpet(dev);
+}
+
+static void i82801xx_lpc_read_resources(device_t dev)
+{
+	struct resource *res;
+
+	/* Get the normal pci resources of this device */
+	pci_dev_read_resources(dev);
+
+	/* Add an extra subtractive resource for both memory and I/O */
+	res = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0));
+	res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
+
+	res = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0));
+	res->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
+}
+
+static void i82801xx_lpc_enable_resources(device_t dev)
+{
+	pci_dev_enable_resources(dev);
+	enable_childrens_resources(dev);
+}
+
+static struct device_operations lpc_ops  = {
+	.read_resources   = i82801xx_lpc_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = i82801xx_lpc_enable_resources,
+	.init             = lpc_init,
+	.scan_bus         = scan_static_bus,
+	.enable           = i82801xx_enable,
+};
+
+static struct pci_driver i82801aa_lpc __pci_driver = {
+	.ops    = &lpc_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2410,
+};
+
+static struct pci_driver i82801ab_lpc __pci_driver = {
+	.ops    = &lpc_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2420,
+};
+
+static struct pci_driver i82801ba_lpc __pci_driver = {
+	.ops    = &lpc_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2440,
+};
+
+static struct pci_driver i82801ca_lpc __pci_driver = {
+	.ops    = &lpc_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2480,
+};
+
+static struct pci_driver i82801db_lpc __pci_driver = {
+	.ops    = &lpc_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x24c0,
+};
+
+static struct pci_driver i82801dbm_lpc __pci_driver = {
+	.ops    = &lpc_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x24cc,
+};
+
+/* i82801eb and er */
+static struct pci_driver i82801ex_lpc __pci_driver = {
+	.ops    = &lpc_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x24d0,
+};
diff --git a/src/southbridge/intel/i82801xx/i82801xx_nic.c b/src/southbridge/intel/i82801xx/i82801xx_nic.c
new file mode 100644
index 0000000000..fe2ee9fbb3
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/i82801xx_nic.c
@@ -0,0 +1,44 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2007 Corey Osgood <corey.osgood@gmail.com>
+ *
+ * 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/pci_ids.h>
+
+static struct device_operations nic_ops  = {
+	.read_resources   = pci_dev_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init             = 0,
+	.scan_bus         = 0,
+};
+
+static struct pci_driver i82801dbm_nic __pci_driver = {
+	.ops    = &nic_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x103a,
+};
+
+static struct pci_driver i82801ex_nic __pci_driver = {
+	.ops    = &nic_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x1051,
+};
diff --git a/src/southbridge/intel/i82801xx/i82801xx_pci.c b/src/southbridge/intel/i82801xx/i82801xx_pci.c
new file mode 100644
index 0000000000..3d27f7f545
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/i82801xx_pci.c
@@ -0,0 +1,80 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2005 Tyan Computer
+ * (Written by Yinghai Lu <yinghailu@gmail.com> for Tyan Computer)
+ *
+ * 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/pci_ids.h>
+
+static void pci_init(struct device *dev)
+{
+	uint32_t reg32;
+	uint16_t reg16;
+
+	/* Clear system errors */
+	reg16 = pci_read_config16(dev, 0x06);
+	reg16 |= 0xf900; /* Clear possible errors */
+	pci_write_config16(dev, 0x06, reg16);
+
+	/* i82801er has this commented out, wonder why? */
+	/* System error enable */
+	reg32 = pci_read_config32(dev, 0x04);
+	reg32 |= (1 << 8); /* SERR# Enable */
+	reg32 |= (1 << 6); /* Parity Error Response */
+	pci_write_config32(dev, 0x04, reg32);
+	
+	reg16 = pci_read_config16(dev, 0x1e);
+	reg16 |= 0xf800; /* Clear possible errors */
+	pci_write_config16(dev, 0x1e, reg16);
+}
+
+static struct device_operations pci_ops  = {
+	.read_resources   = pci_bus_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_bus_enable_resources,
+	.init             = pci_init,
+	.scan_bus         = pci_scan_bridge,
+};
+
+static struct pci_driver i82801aa_pci __pci_driver = {
+	.ops    = &pci_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2418,
+};
+
+static struct pci_driver i82801ab_pci __pci_driver = {
+	.ops    = &pci_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2428,
+};
+
+/* i82801ba, ca, db, eb, and er */
+static struct pci_driver i82801misc_pci __pci_driver = {
+	.ops    = &pci_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x244e,
+};
+
+static struct pci_driver i82801dbm_pci __pci_driver = {
+	.ops    = &pci_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2448,
+};
diff --git a/src/southbridge/intel/i82801xx/i82801xx_reset.c b/src/southbridge/intel/i82801xx/i82801xx_reset.c
new file mode 100644
index 0000000000..7a9f6de492
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/i82801xx_reset.c
@@ -0,0 +1,27 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2002 Eric Biederman <ebiederm@xmission.com>
+ *
+ * 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 <arch/io.h>
+
+void hard_reset(void)
+{
+        /* Try rebooting through port 0xcf9 */
+        outb((1 << 2)|(1 << 1), 0xcf9);
+}
diff --git a/src/southbridge/intel/i82801xx/i82801xx_sata.c b/src/southbridge/intel/i82801xx/i82801xx_sata.c
new file mode 100644
index 0000000000..33dfc329ac
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/i82801xx_sata.c
@@ -0,0 +1,82 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2005 Tyan Computer
+ * (Written by Yinghai Lu <yinghailu@gmail.com> for Tyan Computer)
+ *
+ * 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/pci_ids.h>
+#include <device/pci_ops.h>
+#include "i82801xx.h"
+
+/* TODO: set dynamically, if the user only wants one sata channel or none at all */
+
+static void sata_init(struct device *dev)
+{
+	/* SATA configuration */
+	pci_write_config8(dev, 0x04, 0x07);
+	pci_write_config8(dev, 0x09, 0x8f);
+	
+	/* Set timmings */
+	pci_write_config16(dev, 0x40, 0x0a307);
+	pci_write_config16(dev, 0x42, 0x0a307);
+
+	/* Sync DMA */
+	pci_write_config16(dev, 0x48, 0x000f);
+	pci_write_config16(dev, 0x4a, 0x1111);
+
+	/* 66 mhz */
+	pci_write_config16(dev, 0x54, 0xf00f);
+
+	/* Combine ide - sata configuration */
+	pci_write_config8(dev, 0x90, 0x0);
+	
+	/* port 0 & 1 enable */
+	pci_write_config8(dev, 0x92, 0x33);
+	
+	/* initialize SATA  */
+	pci_write_config16(dev, 0xa0, 0x0018);
+	pci_write_config32(dev, 0xa4, 0x00000264);
+	pci_write_config16(dev, 0xa0, 0x0040);
+	pci_write_config32(dev, 0xa4, 0x00220043);
+}
+
+static struct device_operations sata_ops  = {
+	.read_resources   = pci_dev_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init             = sata_init,
+	.scan_bus         = 0,
+	.enable           = i82801xx_enable,
+};
+
+/* i82801eb */
+static struct pci_driver i82801eb_sata_driver __pci_driver = {
+	.ops    = &sata_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x24d1,
+};
+
+/* i82801er */
+static struct pci_driver i82801er_sata_driver __pci_driver = {
+	.ops    = &sata_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x24df,
+};
diff --git a/src/southbridge/intel/i82801xx/i82801xx_smbus.c b/src/southbridge/intel/i82801xx/i82801xx_smbus.c
new file mode 100644
index 0000000000..67a746666c
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/i82801xx_smbus.c
@@ -0,0 +1,94 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2005 Yinghai Lu <yinghailu@gmail.com>
+ *
+ * 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 <smbus.h>
+#include <pci.h>
+#include <arch/io.h>
+#include "i82801_model_specific.h"
+#include "i82801xx.h"
+#include "i82801_smbus.h"
+
+static int smbus_read_byte(struct bus *bus, device_t dev, uint8_t address)
+{
+	unsigned device;
+	struct resource *res;
+
+	device = dev->path.u.i2c.device;
+	res = find_resource(bus->dev, 0x20);
+	
+	return do_smbus_read_byte(res->base, device, address);
+}
+
+static struct smbus_bus_operations lops_smbus_bus = {
+	.read_byte  = smbus_read_byte,
+};
+
+static struct device_operations smbus_ops = {
+	.read_resources   = pci_dev_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init             = 0,
+	.scan_bus         = scan_static_bus,
+	.enable           = i82801er_enable,
+	.ops_smbus_bus    = &lops_smbus_bus,
+};
+
+/* i82801aa */
+static struct pci_driver smbus_driver __pci_driver = {
+	.ops    = &smbus_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2413,
+};
+
+/* i82801ab */
+static struct pci_driver smbus_driver __pci_driver = {
+	.ops    = &smbus_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2423,
+};
+
+/* i82801ba */
+static struct pci_driver smbus_driver __pci_driver = {
+	.ops    = &smbus_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2443,
+};
+
+/* i82801ca */
+static struct pci_driver smbus_driver __pci_driver = {
+	.ops    = &smbus_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2483,
+};
+
+/* i82801db and i82801dbm */
+static struct pci_driver smbus_driver __pci_driver = {
+	.ops    = &smbus_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x24c3,
+};
+
+/* i82801eb and i82801er */
+static struct pci_driver smbus_driver __pci_driver = {
+	.ops    = &smbus_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x24d3,
+};
+
diff --git a/src/southbridge/intel/i82801xx/i82801xx_smbus.h b/src/southbridge/intel/i82801xx/i82801xx_smbus.h
new file mode 100644
index 0000000000..d0226046da
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/i82801xx_smbus.h
@@ -0,0 +1,181 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2005 Yinghai Lu <yinghailu@gmail.com>
+ *
+ * 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 <device/smbus_def.h>
+
+static void smbus_delay(void)
+{
+	inb(0x80);
+}
+
+static int smbus_wait_until_ready(void)
+{
+	unsigned loops = SMBUS_TIMEOUT;
+	unsigned char byte;
+	do {
+		smbus_delay();
+		if (--loops == 0)
+			break;
+		byte = inb(SMBUS_IO_BASE + SMBHSTSTAT);
+	} while(byte & 1);
+	return loops?0:-1;
+}
+
+static int smbus_wait_until_done(void)
+{
+	unsigned loops = SMBUS_TIMEOUT;
+	unsigned char byte;
+	do {
+	        smbus_delay();
+	        if (--loops == 0)
+	               break;
+	        byte = inb(SMBUS_IO_BASE + SMBHSTSTAT);
+	} while((byte & 1) || (byte & ~((1<<6)|(1<<0))) == 0);
+	return loops?0:-1;
+}
+
+static int smbus_wait_until_blk_done(void)
+{
+	unsigned loops = SMBUS_TIMEOUT;
+	unsigned char byte;
+	do {
+	        smbus_delay();
+	        if (--loops == 0)
+	               break;
+	        byte = inb(SMBUS_IO_BASE + SMBHSTSTAT);
+	} while((byte & (1 << 7)) == 0);
+	return loops?0:-1;
+}
+
+static int do_smbus_read_byte(unsigned device, unsigned address)
+{
+	unsigned char global_status_register;
+	unsigned char byte;
+
+	if (smbus_wait_until_ready() < 0) {
+		return SMBUS_WAIT_UNTIL_READY_TIMEOUT;
+	}
+	/* Setup transaction */
+	/* Disable interrupts */
+	outb(inb(SMBUS_IO_BASE + SMBHSTCTL) & (~1), SMBUS_IO_BASE + SMBHSTCTL);
+	/* Set the device I'm talking too */
+	outb(((device & 0x7f) << 1) | 1, SMBUS_IO_BASE + SMBXMITADD);
+	/* Set the command/address... */
+	outb(address & 0xff, SMBUS_IO_BASE + SMBHSTCMD);
+	/* Set up for a byte data read */
+	outb((inb(SMBUS_IO_BASE + SMBHSTCTL) & 0xe3) | (0x2 << 2), (SMBUS_IO_BASE + SMBHSTCTL));
+	/* Clear any lingering errors, so the transaction will run */
+	outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
+
+	/* Clear the data byte...*/
+	outb(0, SMBUS_IO_BASE + SMBHSTDAT0);
+
+	/* Start the command */
+	outb((inb(SMBUS_IO_BASE + SMBHSTCTL) | 0x40), SMBUS_IO_BASE + SMBHSTCTL);
+
+	/* Poll for transaction completion */
+	if (smbus_wait_until_done() < 0) {
+		return SMBUS_WAIT_UNTIL_DONE_TIMEOUT;
+	}
+
+	global_status_register = inb(SMBUS_IO_BASE + SMBHSTSTAT);
+
+	/* Ignore the "In Use" status... */
+	global_status_register &= ~(3 << 5);
+
+	/* Read results of transaction */
+	byte = inb(SMBUS_IO_BASE + SMBHSTDAT0);
+	if (global_status_register != (1 << 1)) {
+		return SMBUS_ERROR;
+	}
+	return byte;
+}
+
+/* This function is neither used nor tested by me (Corey Osgood), the author 
+(Yinghai) probably tested/used it on i82801er */
+static int do_smbus_write_block(unsigned device, unsigned length, unsigned cmd, 
+		 unsigned data1, unsigned data2)
+{
+#warning "do_smbus_write_block is commented out"
+	print_err("Untested smbus_write_block called\r\n");
+#if 0
+	unsigned char global_control_register;
+	unsigned char global_status_register;
+	unsigned char byte;
+	unsigned char stat;
+	int i;
+
+	/* Clear the PM timeout flags, SECOND_TO_STS */
+	outw(inw(0x0400 + 0x66), 0x0400 + 0x66);
+	
+	if (smbus_wait_until_ready(SMBUS_IO_BASE) < 0) {
+		return -2;
+	}
+	
+	/* Setup transaction */
+	/* Obtain ownership */
+	outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
+	for(stat = 0; (stat & 0x40) == 0; ) {
+	stat = inb(SMBUS_IO_BASE + SMBHSTSTAT);
+	}
+	/* Clear the done bit */
+	outb(0x80, SMBUS_IO_BASE + SMBHSTSTAT);
+	/* Disable interrupts */
+	outb(inb(SMBUS_IO_BASE + SMBHSTCTL) & (~1), SMBUS_IO_BASE + SMBHSTCTL);
+	
+	/* Set the device I'm talking too */
+	outb(((device & 0x7f) << 1), SMBUS_IO_BASE + SMBXMITADD);
+	
+	/* Set the command address */
+	outb(cmd & 0xff, SMBUS_IO_BASE + SMBHSTCMD);
+	
+	/* Set the block length */
+	outb(length & 0xff, SMBUS_IO_BASE + SMBHSTDAT0);
+	
+	/* Try sending out the first byte of data here */
+	byte = (data1 >> (0)) & 0x0ff;
+	outb(byte, SMBUS_IO_BASE + SMBBLKDAT);
+	/* Issue a block write command */
+	outb((inb(SMBUS_IO_BASE + SMBHSTCTL) & 0xe3) | (0x5 << 2) | 0x40, 
+			SMBUS_IO_BASE + SMBHSTCTL);
+
+	for(i = 0;i < length; i++) {
+		
+		/* Poll for transaction completion */
+		if (smbus_wait_until_blk_done(SMBUS_IO_BASE) < 0) {
+			return -3;
+		}
+		
+		/* Load the next byte */
+		if(i > 3)
+			byte = (data2 >> (i % 4)) & 0x0ff;
+		else
+			byte = (data1 >> (i)) & 0x0ff;
+		outb(byte, SMBUS_IO_BASE + SMBBLKDAT);
+		
+		/* Clear the done bit */
+		outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), 
+				SMBUS_IO_BASE + SMBHSTSTAT);
+	}
+
+	print_debug("SMBUS Block complete\r\n");
+	return 0;
+#endif
+}
diff --git a/src/southbridge/intel/i82801xx/i82801xx_usb.c b/src/southbridge/intel/i82801xx/i82801xx_usb.c
new file mode 100644
index 0000000000..27c09e089e
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/i82801xx_usb.c
@@ -0,0 +1,130 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2007 Corey Osgood <corey.osgood@gmail.com>
+ *
+ * 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/pci_ids.h>
+#include <device/pci_ops.h>
+#include "i82801xx.h"
+
+static void usb_init(struct device *dev)
+{
+/* TODO: Any init needed? Some ports have it, others don't */
+}
+
+static struct device_operations usb_ops  = {
+	.read_resources   = pci_dev_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init             = usb_init,
+	.scan_bus         = 0,
+	.enable           = i82801xx_enable,
+};
+
+/* i82801aa */
+static struct pci_driver i82801aa_usb_1 __pci_driver = {
+	.ops    = &usb_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x2412,
+};
+
+/* i82801ab */
+static struct pci_driver i82801ab_usb_1 __pci_driver = {
+        .ops    = &usb_ops,
+        .vendor = PCI_VENDOR_ID_INTEL,
+        .device = 0x2422,
+};
+
+/* i82801ba */
+static struct pci_driver i82801ba_usb_1 __pci_driver = {
+        .ops    = &usb_ops,
+        .vendor = PCI_VENDOR_ID_INTEL,
+        .device = 0x2442,
+};
+
+static struct pci_driver i82801ba_usb_2 __pci_driver = {
+        .ops    = &usb_ops,
+        .vendor = PCI_VENDOR_ID_INTEL,
+        .device = 0x2444,
+};
+
+/* i82801ca */
+static struct pci_driver i82801ca_usb_1 __pci_driver = {
+        .ops    = &usb_ops,
+        .vendor = PCI_VENDOR_ID_INTEL,
+        .device = 0x2482,
+};
+
+static struct pci_driver i82801ca_usb_2 __pci_driver = {
+        .ops    = &usb_ops,
+        .vendor = PCI_VENDOR_ID_INTEL,
+        .device = 0x2484,
+};
+
+static struct pci_driver i82801ca_usb_3 __pci_driver = {
+        .ops    = &usb_ops,
+        .vendor = PCI_VENDOR_ID_INTEL,
+        .device = 0x2487,
+};
+
+/* i82801db and i82801dbm */
+static struct pci_driver i82801db_usb_1 __pci_driver = {
+        .ops    = &usb_ops,
+        .vendor = PCI_VENDOR_ID_INTEL,
+        .device = 0x24c2,
+};
+
+static struct pci_driver i82801db_usb_2 __pci_driver = {
+        .ops    = &usb_ops,
+        .vendor = PCI_VENDOR_ID_INTEL,
+        .device = 0x24c4,
+};
+
+static struct pci_driver i82801db_usb_3 __pci_driver = {
+        .ops    = &usb_ops,
+        .vendor = PCI_VENDOR_ID_INTEL,
+        .device = 0x24c7,
+};
+
+/* i82801eb and i82801er */
+static struct pci_driver i82801ex_usb_1 __pci_driver = {
+        .ops    = &usb_ops,
+        .vendor = PCI_VENDOR_ID_INTEL,
+        .device = 0x24d2,
+};
+
+static struct pci_driver i82801ex_usb_2 __pci_driver = {
+        .ops    = &usb_ops,
+        .vendor = PCI_VENDOR_ID_INTEL,
+        .device = 0x24d4,
+};
+
+static struct pci_driver i82801ex_usb_3 __pci_driver = {
+        .ops    = &usb_ops,
+        .vendor = PCI_VENDOR_ID_INTEL,
+        .device = 0x24d7,
+};
+
+static struct pci_driver i82801ex_usb_4 __pci_driver = {
+        .ops    = &usb_ops,
+        .vendor = PCI_VENDOR_ID_INTEL,
+        .device = 0x24de,
+};
diff --git a/src/southbridge/intel/i82801xx/i82801xx_usb_ehci.c b/src/southbridge/intel/i82801xx/i82801xx_usb_ehci.c
new file mode 100644
index 0000000000..7577da19df
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/i82801xx_usb_ehci.c
@@ -0,0 +1,81 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2005 Tyan Computer
+ * (Written by Yinghai Lu <yinghailu@gmail.com> for Tyan Computer>
+ *
+ * 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/pci_ids.h>
+#include <device/pci_ops.h>
+#include "i82801xx.h"
+
+static void usb_ehci_init(struct device *dev)
+{
+	/* TODO: Is any special init really needed? */
+	uint32_t cmd;
+
+	printk_debug("EHCI: Setting up controller.. ");
+	cmd = pci_read_config32(dev, PCI_COMMAND);
+	pci_write_config32(dev, PCI_COMMAND, 
+		cmd | PCI_COMMAND_MASTER);
+
+	printk_debug("done.\n");
+}
+
+static void usb_ehci_set_subsystem(device_t dev, unsigned vendor, unsigned device)
+{
+	uint8_t access_cntl;
+	access_cntl = pci_read_config8(dev, 0x80);
+	/* Enable writes to protected registers */
+	pci_write_config8(dev, 0x80, access_cntl | 1);
+	/* Write the subsystem vendor and device id */
+	pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, 
+		((device & 0xffff) << 16) | (vendor & 0xffff));
+	/* Restore protection */
+	pci_write_config8(dev, 0x80, access_cntl);
+}
+
+static struct pci_operations lops_pci = {
+	.set_subsystem = &usb_ehci_set_subsystem,
+};
+
+static struct device_operations usb_ehci_ops  = {
+	.read_resources   = pci_dev_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init             = usb_ehci_init,
+	.scan_bus         = 0,
+	.enable           = i82801xx_enable,
+	.ops_pci          = &lops_pci,
+};
+
+/* i82801db and i82801dbm */
+static struct pci_driver i82801db_usb_ehci __pci_driver = {
+	.ops    = &usb_ehci_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x24cd,
+};
+
+/* i82801eb and i82801er */
+static struct pci_driver i82801ex_usb_ehci __pci_driver = {
+	.ops    = &usb_ehci_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = 0x24dd,
+};
diff --git a/src/southbridge/intel/i82801xx/i82801xx_watchdog.c b/src/southbridge/intel/i82801xx/i82801xx_watchdog.c
new file mode 100644
index 0000000000..e2a95156eb
--- /dev/null
+++ b/src/southbridge/intel/i82801xx/i82801xx_watchdog.c
@@ -0,0 +1,51 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2006 John Dufresne <jon.dufresne@gmail.com>
+ *
+ * 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 <arch/io.h>
+#include <device/device.h>
+#include <device/pci.h>
+
+/* TODO: I'm fairly sure the same functionality is provided elsewhere */
+
+void watchdog_off(void)
+{
+        device_t dev;
+        unsigned long value,base;
+
+	/* turn off the ICH5 watchdog */
+        dev = dev_find_slot(0, PCI_DEVFN(0x1f,0));
+        
+        /* Enable I/O space */
+        value = pci_read_config16(dev, 0x04);
+        value |= (1 << 10);
+        pci_write_config16(dev, 0x04, value);
+        /* Get TCO base */
+        base = (pci_read_config32(dev, 0x40) & 0x0fffe) + 0x60;
+        /* Disable the watchdog timer */
+        value = inw(base + 0x08);
+        value |= 1 << 11;
+        outw(value, base + 0x08);
+        /* Clear TCO timeout status */
+        outw(0x0008, base + 0x04);
+        outw(0x0002, base + 0x06);
+        printk_debug("ICH Watchdog disabled\r\n");
+}
+
+