A patch to add initial support for the i82801db southbridge based

heavily on the code for i82801dbm and i82801er

Signed-off-by: Jon Dufresne <jon.dufresne@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2534 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

16 files changed, 1363 insertions, 0 deletions

diff --git a/src/southbridge/intel/i82801db/Config.lb b/src/southbridge/intel/i82801db/Config.lb
new file mode 100644
index 0000000..d61fa29
--- /dev/null
+++ b/src/southbridge/intel/i82801db/Config.lb
@@ -0,0 +1,11 @@
+config chip.h
+driver i82801db.o
+driver i82801db_uhci.o
+driver i82801db_lpc.o
+driver i82801db_ide.o
+driver i82801db_ehci.o
+driver i82801db_smbus.o
+driver i82801db_pci.o
+driver i82801db_ac97.o
+object i82801db_watchdog.o
+object i82801db_reset.o
diff --git a/src/southbridge/intel/i82801db/chip.h b/src/southbridge/intel/i82801db/chip.h
new file mode 100644
index 0000000..76e0560
--- /dev/null
+++ b/src/southbridge/intel/i82801db/chip.h
@@ -0,0 +1,55 @@
+/*
+ * 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
+ */
+ 
+#ifndef I82801DB_CHIP_H
+#define I82801DB_CHIP_H
+
+struct southbridge_intel_i82801db_config 
+{
+
+#define ICH5R_GPIO_USE_MASK      0x03
+#define ICH5R_GPIO_USE_DEFAULT   0x00
+#define ICH5R_GPIO_USE_AS_NATIVE 0x01
+#define ICH5R_GPIO_USE_AS_GPIO   0x02
+
+#define ICH5R_GPIO_SEL_MASK      0x0c
+#define ICH5R_GPIO_SEL_DEFAULT   0x00
+#define ICH5R_GPIO_SEL_OUTPUT    0x04
+#define ICH5R_GPIO_SEL_INPUT     0x08
+
+#define ICH5R_GPIO_LVL_MASK      0x30
+#define ICH5R_GPIO_LVL_DEFAULT   0x00
+#define ICH5R_GPIO_LVL_LOW       0x10
+#define ICH5R_GPIO_LVL_HIGH      0x20
+#define ICH5R_GPIO_LVL_BLINK     0x30
+
+#define ICH5R_GPIO_INV_MASK      0xc0
+#define ICH5R_GPIO_INV_DEFAULT   0x00
+#define ICH5R_GPIO_INV_OFF       0x40
+#define ICH5R_GPIO_INV_ON        0x80
+
+	/* GPIO use select */
+	unsigned char gpio[64];
+	unsigned int  pirq_a_d;
+	unsigned int  pirq_e_h;
+	int enable_native_ide;
+};
+extern struct chip_operations southbridge_intel_i82801db_ops;
+
+#endif /* I82801DB_CHIP_H */
+
diff --git a/src/southbridge/intel/i82801db/cmos_failover.c b/src/southbridge/intel/i82801db/cmos_failover.c
new file mode 100644
index 0000000..5b4bbd2
--- /dev/null
+++ b/src/southbridge/intel/i82801db/cmos_failover.c
@@ -0,0 +1,34 @@
+/*
+ * 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
+ */
+
+//kind of cmos_err for ich5
+#define RTC_FAILED    (1 <<2)
+#define GEN_PMCON_3     0xa4
+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/i82801db/i82801db.c b/src/southbridge/intel/i82801db/i82801db.c
new file mode 100644
index 0000000..85085ae
--- /dev/null
+++ b/src/southbridge/intel/i82801db/i82801db.c
@@ -0,0 +1,64 @@
+/*
+ * 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 <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include "i82801db.h"
+
+void i82801db_enable(device_t dev)
+{
+	device_t lpc_dev;
+	uint16_t word;
+
+	printk_debug("Entering %s\n", __FUNCTION__);
+	/* See if we are behind the i82801db pci bridge 
+	lpc_dev = dev_find_slot(dev->bus->secondary, PCI_DEVFN(0x1f, 0));
+	*/
+	lpc_dev = dev_find_slot(0, PCI_DEVFN(0x1f, 0));
+	if (!lpc_dev) {
+		return;
+	}
+	
+	word = 0x0040;
+	pci_write_config16(lpc_dev, 0xf2, word);
+	/*
+	if((dev->path.u.pci.devfn &0xf8)== 0xf8) {
+		index = dev->path.u.pci.devfn & 7;
+	}
+	else if((dev->path.u.pci.devfn &0xf8)== 0xe8) {
+		index = (dev->path.u.pci.devfn & 7) +8;
+	}
+
+	reg = reg_old = pci_read_config16(lpc_dev, 0xf2);
+	reg &= ~(1 << index);
+	if (!dev->enabled) {
+		reg |= (1 << index);
+	}
+	if (reg != reg_old) {
+		printk_debug("Trying to enable device, [0:1f:0] reg 0xf2 <- %04x\n", reg);
+		pci_write_config16(lpc_dev, 0xf2, reg);
+	}
+	*/	
+}
+
+struct chip_operations southbridge_intel_i82801db_ops = {
+	CHIP_NAME("Intel 82801DB Southbridge")
+	.enable_dev = i82801db_enable,
+};
diff --git a/src/southbridge/intel/i82801db/i82801db.h b/src/southbridge/intel/i82801db/i82801db.h
new file mode 100644
index 0000000..54f8587
--- /dev/null
+++ b/src/southbridge/intel/i82801db/i82801db.h
@@ -0,0 +1,33 @@
+/*
+ * 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
+ */
+
+#ifndef I82801DB_H
+#define I82801DB_H
+
+#include "chip.h"
+
+extern void i82801db_enable(device_t dev);
+
+#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
+
+#endif /* I82801DB_H */
diff --git a/src/southbridge/intel/i82801db/i82801db_ac97.c b/src/southbridge/intel/i82801db/i82801db_ac97.c
new file mode 100644
index 0000000..b1f8980
--- /dev/null
+++ b/src/southbridge/intel/i82801db/i82801db_ac97.c
@@ -0,0 +1,55 @@
+/*
+ * 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 <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include "i82801db.h"
+
+static void ac97_set_subsystem(device_t dev, unsigned vendor, unsigned device)
+{
+	/* Write the subsystem vendor and device id */
+	pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, 
+		((device & 0xffff) << 16) | (vendor & 0xffff));
+}
+
+static struct pci_operations lops_pci = {
+	.set_subsystem = ac97_set_subsystem,
+};
+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           = i82801db_enable,
+	.ops_pci          = &lops_pci,
+};
+
+static struct pci_driver ac97_audio_driver __pci_driver = {
+	.ops    = &ac97_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = PCI_DEVICE_ID_INTEL_82801DB_AC97_AUDIO,
+};
+static struct pci_driver ac97_modem_driver __pci_driver = {
+	.ops    = &ac97_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = PCI_DEVICE_ID_INTEL_82801DB_AC97_MODEM,
+};
diff --git a/src/southbridge/intel/i82801db/i82801db_early_smbus.c b/src/southbridge/intel/i82801db/i82801db_early_smbus.c
new file mode 100644
index 0000000..a0d9663
--- /dev/null
+++ b/src/southbridge/intel/i82801db/i82801db_early_smbus.c
@@ -0,0 +1,158 @@
+/*
+ * 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 "i82801db_smbus.h"
+
+#define SMBUS_IO_BASE 0x0f00
+
+static void enable_smbus(void)
+{
+	device_t dev;
+	dev = pci_locate_device(PCI_ID(0x8086, 0x24d3), 0);
+	if (dev == PCI_DEV_INVALID) {
+		die("SMBUS controller not found\r\n");
+	}
+	print_spew("SMBus controller enabled\r\n");
+	
+	pci_write_config32(dev, 0x20, SMBUS_IO_BASE | 1);
+	/* Set smbus enable */
+	pci_write_config8(dev, 0x40, 1);
+	/* Set smbus iospace enable */
+	pci_write_config8(dev, 0x4, 1);
+	/* SMBALERT_DIS */
+	pci_write_config8(dev, 0x11, 4);
+	
+	/* Disable interrupt generation */
+	outb(0, SMBUS_IO_BASE + SMBHSTCTL);
+
+	/* clear any lingering errors, so the transaction will run */
+	outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
+
+#if 0	// It's unlikely that half the southbridge suddenly vanishes?
+	dev = pci_locate_device(PCI_ID(0x8086, 0x24d0), 0);
+	if (dev == PCI_DEV_INVALID) {
+		die("ISA bridge not found\r\n");
+	}
+#endif
+}
+
+static int smbus_read_byte(unsigned device, unsigned address)
+{
+	return do_smbus_read_byte(SMBUS_IO_BASE, device, address);
+}
+
+static void smbus_write_byte(unsigned device, unsigned address, unsigned char val)
+{
+	if (smbus_wait_until_ready(SMBUS_IO_BASE) < 0) {
+		return;
+	}
+	
+	print_debug("Unimplemented smbus_write_byte() called.\r\n");
+
+#if 0
+	/* setup transaction */
+	/* disable interrupts */
+	outw(inw(SMBUS_IO_BASE + SMBGCTL) & ~((1<<10)|(1<<9)|(1<<8)|(1<<4)),
+			SMBUS_IO_BASE + SMBGCTL);
+	/* set the device I'm talking too */
+	outw(((device & 0x7f) << 1) | 1, SMBUS_IO_BASE + SMBHSTADDR);
+	outb(address & 0xFF, SMBUS_IO_BASE + SMBHSTCMD);
+	/* set up for a byte data write */ /* FIXME */
+	outw((inw(SMBUS_IO_BASE + SMBGCTL) & ~7) | (0x1), SMBUS_IO_BASE + SMBGCTL);
+	/* clear any lingering errors, so the transaction will run */
+	/* Do I need to write the bits to a 1 to clear an error? */
+	outw(inw(SMBUS_IO_BASE + SMBGSTATUS), SMBUS_IO_BASE + SMBGSTATUS);
+
+	/* clear the data word...*/
+	outw(val, SMBUS_IO_BASE + SMBHSTDAT);
+
+	/* start the command */
+	outw((inw(SMBUS_IO_BASE + SMBGCTL) | (1 << 3)), SMBUS_IO_BASE + SMBGCTL);
+
+	/* poll for transaction completion */
+	smbus_wait_until_done(SMBUS_IO_BASE);
+#endif	
+	return;
+}
+
+static int smbus_write_block(unsigned device, unsigned length, unsigned cmd, 
+		 unsigned data1, unsigned data2)
+{
+	unsigned char global_control_register;
+	unsigned char global_status_register;
+	unsigned char byte;
+	unsigned char stat;
+	int i;
+
+	/* chear 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;
+}
+
diff --git a/src/southbridge/intel/i82801db/i82801db_ehci.c b/src/southbridge/intel/i82801db/i82801db_ehci.c
new file mode 100644
index 0000000..48b2b0b
--- /dev/null
+++ b/src/southbridge/intel/i82801db/i82801db_ehci.c
@@ -0,0 +1,68 @@
+/*
+ * 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 <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include "i82801db.h"
+
+static void ehci_init(struct device *dev)
+{
+	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 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 = &ehci_set_subsystem,
+};
+static struct device_operations ehci_ops  = {
+	.read_resources   = pci_dev_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init             = ehci_init,
+	.scan_bus         = 0,
+	.enable           = i82801db_enable,
+	.ops_pci          = &lops_pci,
+};
+
+static struct pci_driver ehci_driver __pci_driver = {
+	.ops    = &ehci_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = PCI_DEVICE_ID_INTEL_82801DB_EHCI,
+};
diff --git a/src/southbridge/intel/i82801db/i82801db_ide.c b/src/southbridge/intel/i82801db/i82801db_ide.c
new file mode 100644
index 0000000..87cb2c3
--- /dev/null
+++ b/src/southbridge/intel/i82801db/i82801db_ide.c
@@ -0,0 +1,75 @@
+/*
+ * 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 <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include "i82801db.h"
+
+static void ide_init(struct device *dev)
+{
+	/* Enable IDE devices and timmings */
+	uint8_t byte;
+
+	pci_write_config16(dev, 0x40, 0x8000);
+	/*
+	pci_write_config16(dev, 0x40, 0xa307);
+	pci_write_config16(dev, 0x42, 0xa307);
+	pci_write_config8(dev, 0x48, 0x05);
+	pci_write_config16(dev, 0x4a, 0x0101);
+	pci_write_config16(dev, 0x54, 0x5055);
+	*/
+	
+	/*
+	byte = pci_read_config8(dev, 0x09);
+	byte |= 0x0f;
+	pci_write_config8(dev, 0x09, byte);
+	*/
+	/* force irq into compat mode
+	pci_write_config32(dev, 0x10, 0x0);
+	pci_write_config32(dev, 0x14, 0x0);
+	pci_write_config32(dev, 0x18, 0x0);
+	pci_write_config32(dev, 0x1c, 0x0);
+	
+
+	pci_write_config8(dev, 0x3d, 00);
+	*/
+	pci_write_config8(dev, 0x3c, 0xff);
+	
+
+
+	printk_debug("IDE Enabled\n");
+}
+
+static struct device_operations ide_ops  = {
+	.read_resources   = pci_dev_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.enable		  = 0,
+	.init             = ide_init,
+	.scan_bus         = 0,
+};
+
+static struct pci_driver ide_driver __pci_driver = {
+	.ops    = &ide_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = PCI_DEVICE_ID_INTEL_82801DB_IDE,
+};
+
diff --git a/src/southbridge/intel/i82801db/i82801db_lpc.c b/src/southbridge/intel/i82801db/i82801db_lpc.c
new file mode 100644
index 0000000..d44d829
--- /dev/null
+++ b/src/southbridge/intel/i82801db/i82801db_lpc.c
@@ -0,0 +1,416 @@
+/*
+ * 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
+ */
+
+/*
+ * (C) 2004 Linux Networx
+ */
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.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 "i82801db.h"
+
+#define ACPI_BAR 0x40
+#define GPIO_BAR 0x58
+
+#define NMI_OFF 0
+#define MAINBOARD_POWER_OFF 0
+#define MAINBOARD_POWER_ON  1
+
+#ifndef MAINBOARD_POWER_ON_AFTER_POWER_FAIL
+#define MAINBOARD_POWER_ON_AFTER_POWER_FAIL MAINBOARD_POWER_ON
+#endif
+
+#define ALL		(0xff << 24)
+#define NONE		(0)
+#define DISABLED	(1 << 16)
+#define ENABLED		(0 << 16)
+#define TRIGGER_EDGE	(0 << 15)
+#define TRIGGER_LEVEL	(1 << 15)
+#define POLARITY_HIGH	(0 << 13)
+#define POLARITY_LOW	(1 << 13)
+#define PHYSICAL_DEST	(0 << 11)
+#define LOGICAL_DEST	(1 << 11)
+#define ExtINT		(7 << 8)
+#define NMI		(4 << 8)
+#define SMI		(2 << 8)
+#define INT		(1 << 8)
+
+static void setup_ioapic(void)
+{
+	int i;
+	unsigned long value_low, value_high;
+	unsigned long ioapic_base = 0xfec00000;
+	volatile unsigned long *l;
+	unsigned interrupts;
+
+	l = (unsigned long *) ioapic_base;
+
+	l[0] = 0x01;
+	interrupts = (l[04] >> 16) & 0xff;
+	for (i = 0; i < interrupts; i++) {
+		l[0] = (i * 2) + 0x10;
+		l[4] = DISABLED;
+		value_low = l[4];
+		l[0] = (i * 2) + 0x11;
+		l[4] = NONE; /* Should this be an address? */
+		value_high = l[4];
+		if (value_low == 0xffffffff) {
+			printk_warning("IO APIC not responding.\n");
+			return;
+		}
+	}
+
+	/* Put the ioapic in virtual wire mode */
+	l[0] = 0 + 0x10;
+	l[4] = ENABLED | TRIGGER_EDGE | POLARITY_HIGH | PHYSICAL_DEST | ExtINT;
+}
+
+#define SERIRQ_CNTL 0x64
+static void i82801db_enable_serial_irqs(device_t 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));
+}
+
+#define PCI_DMA_CFG 0x90
+static void i82801db_pci_dma_cfg(device_t dev)
+{
+	/* Set PCI DMA CFG to lpc I/F DMA 
+	pci_write_config16(dev, PCI_DMA_CFG, 0xfcff); */
+	pci_write_config16(dev, PCI_DMA_CFG, 0x5455);
+}
+
+#define LPC_EN 0xe6
+static void i82801db_enable_lpc(device_t dev)
+{
+        /* lpc i/f enable 
+        pci_write_config8(dev, LPC_EN, 0x0d); */
+        pci_write_config16(dev, LPC_EN, 0x3403);
+}
+
+typedef struct southbridge_intel_i82801db_config config_t;
+
+static void set_i82801db_gpio_use_sel(
+	device_t dev, struct resource *res, config_t *config)
+{
+	uint32_t gpio_use_sel, gpio_use_sel2;
+	int i;
+
+	gpio_use_sel  = 0x1A003180;
+	gpio_use_sel2 = 0x00000007;
+	for(i = 0; i < 64; i++) {
+		int val;
+		switch(config->gpio[i] & ICH5R_GPIO_USE_MASK) {
+		case ICH5R_GPIO_USE_AS_NATIVE: val = 0; break;
+		case ICH5R_GPIO_USE_AS_GPIO:   val = 1; break;
+		default:
+			continue;
+		}
+		/* The caller is responsible for not playing with unimplemented bits */
+		if (i < 32) {
+			gpio_use_sel  &= ~( 1 << i);
+			gpio_use_sel  |= (val << i);
+		} else {
+			gpio_use_sel2 &= ~( 1 << (i - 32));
+			gpio_use_sel2 |= (val << (i - 32));
+		}
+	}
+	outl(gpio_use_sel,  res->base + 0x00);
+	outl(gpio_use_sel2, res->base + 0x30);
+}
+
+static void set_i82801db_gpio_direction(
+	device_t dev, struct resource *res, config_t *config)
+{
+	uint32_t gpio_io_sel, gpio_io_sel2;
+	int i;
+
+	gpio_io_sel  = 0x0000ffff;
+	gpio_io_sel2 = 0x00000300;
+	for(i = 0; i < 64; i++) {
+		int val;
+		switch(config->gpio[i] & ICH5R_GPIO_SEL_MASK) {
+		case ICH5R_GPIO_SEL_OUTPUT: val = 0; break;
+		case ICH5R_GPIO_SEL_INPUT:  val = 1; break;
+		default: 
+			continue;
+		}
+		/* The caller is responsible for not playing with unimplemented bits */
+		if (i < 32) {
+			gpio_io_sel  &= ~( 1 << i);
+			gpio_io_sel  |= (val << i);
+		} else {
+			gpio_io_sel2 &= ~( 1 << (i - 32));
+			gpio_io_sel2 |= (val << (i - 32));
+		}
+	}
+	outl(gpio_io_sel,  res->base + 0x04);
+	outl(gpio_io_sel2, res->base + 0x34);
+}
+
+static void set_i82801db_gpio_level(
+	device_t dev, struct resource *res, config_t *config)
+{
+	uint32_t gpio_lvl, gpio_lvl2;
+	uint32_t gpio_blink;
+	int i;
+
+	gpio_lvl   = 0x1b3f0000;
+	gpio_blink = 0x00040000;
+	gpio_lvl2  = 0x00030207;
+	for(i = 0; i < 64; i++) {
+		int val, blink;
+		switch(config->gpio[i] & ICH5R_GPIO_LVL_MASK) {
+		case ICH5R_GPIO_LVL_LOW:   val = 0; blink = 0; break;
+		case ICH5R_GPIO_LVL_HIGH:  val = 1; blink = 0; break;
+		case ICH5R_GPIO_LVL_BLINK: val = 1; blink = 1; break;
+		default: 
+			continue;
+		}
+		/* The caller is responsible for not playing with unimplemented bits */
+		if (i < 32) {
+			gpio_lvl   &= ~(   1 << i);
+			gpio_blink &= ~(   1 << i);
+			gpio_lvl   |= (  val << i);
+			gpio_blink |= (blink << i);
+		} else {
+			gpio_lvl2  &= ~( 1 << (i - 32));
+			gpio_lvl2  |= (val << (i - 32));
+		}
+	}
+	outl(gpio_lvl,   res->base + 0x0c);
+	outl(gpio_blink, res->base + 0x18);
+	outl(gpio_lvl2,  res->base + 0x38);
+}
+
+static void set_i82801db_gpio_inv(
+	device_t dev, struct resource *res, config_t *config)
+{
+	uint32_t gpio_inv;
+	int i;
+
+	gpio_inv   = 0x00000000;
+	for(i = 0; i < 32; i++) {
+		int val;
+		switch(config->gpio[i] & ICH5R_GPIO_INV_MASK) {
+		case ICH5R_GPIO_INV_OFF: val = 0; break;
+		case ICH5R_GPIO_INV_ON:  val = 1; break;
+		default: 
+			continue;
+		}
+		gpio_inv &= ~( 1 << i);
+		gpio_inv |= (val << i);
+	}
+	outl(gpio_inv,   res->base + 0x2c);
+}
+
+static void i82801db_pirq_init(device_t dev)
+{
+	config_t *config;
+
+	/* Get the chip configuration */
+	config = dev->chip_info;
+
+	if(config->pirq_a_d) {
+		printk_debug("\n\nIRQs A to D = %04x\n\n", config->pirq_a_d);
+		pci_write_config32(dev, 0x60, config->pirq_a_d);
+	}
+	if(config->pirq_e_h) {
+		printk_debug("\n\nIRQs e to h = %04x\n\n", config->pirq_e_h);
+		pci_write_config32(dev, 0x68, config->pirq_e_h);
+	}
+}
+
+
+static void i82801db_gpio_init(device_t dev)
+{
+	struct resource *res;
+	config_t *config;
+
+	/* Skip if I don't have any configuration */
+	if (!dev->chip_info) {
+		return;
+	}
+	/* The programmer is responsible for ensuring
+	 * a valid gpio configuration.
+	 */
+
+	/* Get the chip configuration */
+	config = dev->chip_info;
+	/* Find the GPIO bar */
+	res = find_resource(dev, GPIO_BAR);
+	if (!res) {
+		return; 
+	}
+
+	/* Set the use selects */
+	set_i82801db_gpio_use_sel(dev, res, config);
+
+	/* Set the IO direction */
+	set_i82801db_gpio_direction(dev, res, config);
+
+	/* Setup the input inverters */
+	set_i82801db_gpio_inv(dev, res, config);
+
+	/* Set the value on the GPIO output pins */
+	set_i82801db_gpio_level(dev, res, config);
+
+}
+
+static void enable_hpet(struct device *dev)
+{
+const unsigned long hpet_address = 0xfed0000;
+
+	uint32_t dword;
+	uint32_t code = (0 & 0x3);
+
+	dword = pci_read_config32(dev, GEN_CNTL);
+	dword |= (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
+	 */
+
+	dword &= ~(3 << 15); /* clear it */
+	dword |= (code<<15);
+
+	printk_debug("enabling HPET @0x%x\n", hpet_address | (code <<12) );
+}
+
+static void lpc_init(struct device *dev)
+{
+	uint8_t byte;
+	uint32_t value;
+	int pwr_on=MAINBOARD_POWER_ON_AFTER_POWER_FAIL;
+
+	/* IO APIC initialization */
+	value = pci_read_config32(dev, 0xd0);
+	value |= (1 << 8)|(1<<7)|(1<<1);
+	pci_write_config32(dev, 0xd0, value);
+	value = pci_read_config32(dev, 0xd4);
+	value |= (1<<1);
+	pci_write_config32(dev, 0xd4, value);
+	setup_ioapic();
+
+	i82801db_enable_serial_irqs(dev);
+
+	i82801db_pci_dma_cfg(dev);
+
+	i82801db_enable_lpc(dev);
+
+	/* Clear SATA to non raid
+	pci_write_config8(dev, 0xae, 0x00);
+	*/
+	
+        get_option(&pwr_on, "power_on_after_fail");
+	byte = pci_read_config8(dev, 0xa4);
+	byte &= 0xfe;
+	if (!pwr_on) {
+		byte |= 1;
+	}
+	pci_write_config8(dev, 0xa4, byte);
+	printk_info("set power %s after power fail\n", pwr_on?"on":"off");
+
+	/* Set up the PIRQ */
+	i82801db_pirq_init(dev);
+	
+	/* Set the state of the gpio lines */
+	i82801db_gpio_init(dev);
+
+	/* Initialize the real time clock */
+	rtc_init(0);
+
+	/* Initialize isa dma */
+	isa_dma_init();
+
+	/* Disable IDE (needed when sata is enabled)
+	pci_write_config8(dev, 0xf2, 0x60);
+	*/
+		
+	enable_hpet(dev);
+}
+
+static void i82801db_lpc_read_resources(device_t dev)
+{
+	struct resource *res;
+
+	/* Get the normal pci resources of this device */
+	pci_dev_read_resources(dev);
+
+	/* Add the ACPI BAR */
+	res = pci_get_resource(dev, ACPI_BAR);
+
+	/* Add the GPIO BAR */
+	res = pci_get_resource(dev, GPIO_BAR);
+
+	/* 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 i82801db_lpc_enable_resources(device_t dev)
+{
+	uint8_t acpi_cntl, gpio_cntl;
+
+	/* Enable the normal pci resources */
+	pci_dev_enable_resources(dev);
+
+	/* Enable the ACPI bar */
+	acpi_cntl = pci_read_config8(dev, 0x44);
+	acpi_cntl |= (1 << 4);
+	pci_write_config8(dev, 0x44, acpi_cntl);
+	
+	/* Enable the GPIO bar */
+	gpio_cntl = pci_read_config8(dev, 0x5c);
+	gpio_cntl |= (1 << 4);
+	pci_write_config8(dev, 0x5c, gpio_cntl);
+
+	enable_childrens_resources(dev);
+}
+
+static struct pci_operations lops_pci = {
+	.set_subsystem = 0,
+};
+
+static struct device_operations lpc_ops  = {
+	.read_resources   = i82801db_lpc_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = i82801db_lpc_enable_resources,
+	.init             = lpc_init,
+	.scan_bus         = scan_static_bus,
+	.enable           = i82801db_enable,
+	.ops_pci          = &lops_pci,
+};
+
+static struct pci_driver lpc_driver __pci_driver = {
+	.ops    = &lpc_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = PCI_DEVICE_ID_INTEL_82801DB_ISA,
+};
diff --git a/src/southbridge/intel/i82801db/i82801db_pci.c b/src/southbridge/intel/i82801db/i82801db_pci.c
new file mode 100644
index 0000000..82a2f4e
--- /dev/null
+++ b/src/southbridge/intel/i82801db/i82801db_pci.c
@@ -0,0 +1,63 @@
+/*
+ * 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 <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include "i82801db.h"
+
+static void pci_init(struct device *dev)
+{
+	uint32_t dword;
+	uint16_t word;
+
+	/* Clear system errors */
+	word = pci_read_config16(dev, 0x06);
+	word |= 0xf900; /* Clear possible errors */
+	pci_write_config16(dev, 0x06, word);
+
+#if 0
+	/* System error enable */
+	dword = pci_read_config32(dev, 0x04);
+	dword |= (1<<8); /* SERR# Enable */
+	dword |= (1<<6); /* Parity Error Response */
+	pci_write_config32(dev, 0x04, dword);
+#endif				
+	
+	word = pci_read_config16(dev, 0x1e);
+	word |= 0xf800; /* Clear possible errors */
+	pci_write_config16(dev, 0x1e, word);
+}
+
+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,
+	.ops_pci          = 0,
+};
+
+static struct pci_driver pci_driver __pci_driver = {
+	.ops    = &pci_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = PCI_DEVICE_ID_INTEL_82801DB_PCI,
+};
+
diff --git a/src/southbridge/intel/i82801db/i82801db_reset.c b/src/southbridge/intel/i82801db/i82801db_reset.c
new file mode 100644
index 0000000..e8d6f02
--- /dev/null
+++ b/src/southbridge/intel/i82801db/i82801db_reset.c
@@ -0,0 +1,25 @@
+/*
+ * 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 <arch/io.h>
+
+void i82801db_hard_reset(void)
+{
+        /* Try rebooting through port 0xcf9 */
+        outb((0 <<3)|(1<<2)|(1<<1), 0xcf9);
+}
diff --git a/src/southbridge/intel/i82801db/i82801db_smbus.c b/src/southbridge/intel/i82801db/i82801db_smbus.c
new file mode 100644
index 0000000..c6806af
--- /dev/null
+++ b/src/southbridge/intel/i82801db/i82801db_smbus.c
@@ -0,0 +1,63 @@
+/*
+ * 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 <device/device.h>
+#include <device/path.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include <device/smbus.h>
+#include <arch/io.h>
+#include "i82801db.h"
+#include "i82801db_smbus.h"
+
+static int lsmbus_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  = lsmbus_read_byte,
+};
+static struct pci_operations lops_pci = {
+	/* The subsystem id follows the ide controller */
+	.set_subsystem = 0,
+};
+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           = i82801db_enable,
+	.ops_pci          = &lops_pci,
+	.ops_smbus_bus    = &lops_smbus_bus,
+};
+
+static struct pci_driver smbus_driver __pci_driver = {
+	.ops    = &smbus_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = PCI_DEVICE_ID_INTEL_82801DB_SMB,
+};
+
diff --git a/src/southbridge/intel/i82801db/i82801db_smbus.h b/src/southbridge/intel/i82801db/i82801db_smbus.h
new file mode 100644
index 0000000..b7ba527
--- /dev/null
+++ b/src/southbridge/intel/i82801db/i82801db_smbus.h
@@ -0,0 +1,123 @@
+/*
+ * 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 <device/smbus_def.h>
+
+#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 (100*1000*10)
+
+
+static void smbus_delay(void)
+{
+	outb(0x80, 0x80);
+}
+
+static int smbus_wait_until_ready(unsigned smbus_io_base)
+{
+	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(unsigned smbus_io_base)
+{
+	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(unsigned smbus_io_base)
+{
+	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 smbus_io_base, unsigned device, unsigned address)
+{
+	unsigned char global_status_register;
+	unsigned char byte;
+
+	if (smbus_wait_until_ready(smbus_io_base) < 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(smbus_io_base) < 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;
+}
+
diff --git a/src/southbridge/intel/i82801db/i82801db_uhci.c b/src/southbridge/intel/i82801db/i82801db_uhci.c
new file mode 100644
index 0000000..40f711f
--- /dev/null
+++ b/src/southbridge/intel/i82801db/i82801db_uhci.c
@@ -0,0 +1,74 @@
+/*
+ * 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 <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include "i82801db.h"
+
+static void uhci_init(struct device *dev)
+{
+	uint32_t cmd;
+
+#if 1
+	printk_debug("UHCI: Setting up controller.. ");
+	cmd = pci_read_config32(dev, PCI_COMMAND);
+	pci_write_config32(dev, PCI_COMMAND, 
+		cmd | PCI_COMMAND_MASTER);
+
+
+	printk_debug("done.\n");
+#endif
+
+}
+
+static struct pci_operations lops_pci = {
+	/* The subsystem id follows the ide controller */
+	.set_subsystem = 0,
+};
+
+static struct device_operations uhci_ops  = {
+	.read_resources   = pci_dev_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init             = uhci_init,
+	.scan_bus         = 0,
+	.enable           = i82801db_enable,
+	.ops_pci          = &lops_pci,
+};
+
+static struct pci_driver uhci_driver __pci_driver = {
+	.ops    = &uhci_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = PCI_DEVICE_ID_INTEL_82801DB_USB0,
+};
+
+static struct pci_driver usb2_driver __pci_driver = {
+	.ops    = &uhci_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = PCI_DEVICE_ID_INTEL_82801DB_USB1,
+};
+
+static struct pci_driver usb3_driver __pci_driver = {
+	.ops    = &uhci_ops,
+	.vendor = PCI_VENDOR_ID_INTEL,
+	.device = PCI_DEVICE_ID_INTEL_82801DB_USB2,
+};
+
diff --git a/src/southbridge/intel/i82801db/i82801db_watchdog.c b/src/southbridge/intel/i82801db/i82801db_watchdog.c
new file mode 100644
index 0000000..dab1c69
--- /dev/null
+++ b/src/southbridge/intel/i82801db/i82801db_watchdog.c
@@ -0,0 +1,46 @@
+/*
+ * 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 <console/console.h>
+#include <arch/io.h>
+#include <device/device.h>
+#include <device/pci.h>
+
+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("Watchdog ICH5 disabled\r\n");
+}
+