This sb800 code is derived from sb700.

Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Acked-by: Stefan Reinauer <stepan@coreboot.org>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6277 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

20 files changed, 3377 insertions, 0 deletions

diff --git a/src/southbridge/amd/sb800/Kconfig b/src/southbridge/amd/sb800/Kconfig
new file mode 100644
index 0000000000..1afd242d35
--- /dev/null
+++ b/src/southbridge/amd/sb800/Kconfig
@@ -0,0 +1,42 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2010 Advanced Micro Devices, Inc.
+##
+## 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; version 2 of the License.
+##
+## 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
+##
+
+config SOUTHBRIDGE_AMD_SB800
+	bool
+	select IOAPIC
+	select HAVE_USBDEBUG
+	select TINY_BOOTBLOCK
+
+config BOOTBLOCK_SOUTHBRIDGE_INIT
+	string
+	default "southbridge/amd/sb800/bootblock.c"
+	depends on SOUTHBRIDGE_AMD_SB800
+
+config SOUTHBRIDGE_AMD_SB800_SKIP_ISA_DMA_INIT
+	bool
+	default n
+	depends on SOUTHBRIDGE_AMD_SB800
+
+config EHCI_BAR
+	hex
+	default 0xfef00000 if SOUTHBRIDGE_AMD_SB800
+
+config EHCI_DEBUG_OFFSET
+	hex
+	default 0xe0 if SOUTHBRIDGE_AMD_SB800
diff --git a/src/southbridge/amd/sb800/Makefile.inc b/src/southbridge/amd/sb800/Makefile.inc
new file mode 100644
index 0000000000..7a42fdd4d8
--- /dev/null
+++ b/src/southbridge/amd/sb800/Makefile.inc
@@ -0,0 +1,12 @@
+driver-y += sb800.c
+driver-y += usb.c
+driver-y += lpc.c
+driver-y += sm.c
+driver-y += ide.c
+driver-y += sata.c
+driver-y += hda.c
+driver-y += pci.c
+driver-y += pcie.c
+ramstage-$(CONFIG_GENERATE_ACPI_TABLES) += fadt.c
+ramstage-y += reset.c
+romstage-y += enable_usbdebug.c
diff --git a/src/southbridge/amd/sb800/bootblock.c b/src/southbridge/amd/sb800/bootblock.c
new file mode 100644
index 0000000000..7a67a946d8
--- /dev/null
+++ b/src/southbridge/amd/sb800/bootblock.c
@@ -0,0 +1,69 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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 <stdint.h>
+#include <arch/io.h>
+#include <arch/romcc_io.h>
+#include <device/pci_ids.h>
+
+/*
+ * Enable 4MB (LPC) ROM access at 0xFFC00000 - 0xFFFFFFFF.
+ *
+ * Hardware should enable LPC ROM by pin straps. This function does not
+ * handle the theoretically possible PCI ROM, FWH, or SPI ROM configurations.
+ *
+ * The SB800 power-on default is to map 512K ROM space.
+ *
+ */
+static void sb800_enable_rom(void)
+{
+	u8 reg8;
+	device_t dev;
+
+	dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_ATI,
+				       PCI_DEVICE_ID_ATI_SB800_LPC), 0);
+
+	/* Decode variable LPC ROM address ranges 1 and 2. */
+	reg8 = pci_read_config8(dev, 0x48);
+	reg8 |= (1 << 3) | (1 << 4);
+	pci_write_config8(dev, 0x48, reg8);
+
+	/* LPC ROM address range 1: */
+	/* Enable LPC ROM range mirroring start at 0x000e(0000). */
+	pci_write_config16(dev, 0x68, 0x000e);
+	/* Enable LPC ROM range mirroring end at 0x000f(ffff). */
+	pci_write_config16(dev, 0x6a, 0x000f);
+
+	/* LPC ROM address range 2: */
+	/*
+	 * Enable LPC ROM range start at:
+	 * 0xfff8(0000): 512KB
+	 * 0xfff0(0000): 1MB
+	 * 0xffe0(0000): 2MB
+	 * 0xffc0(0000): 4MB
+	 */
+	pci_write_config16(dev, 0x6c, 0xffc0); /* 4 MB */
+	/* Enable LPC ROM range end at 0xffff(ffff). */
+	pci_write_config16(dev, 0x6e, 0xffff);
+}
+
+static void bootblock_southbridge_init(void)
+{
+	sb800_enable_rom();
+}
diff --git a/src/southbridge/amd/sb800/chip.h b/src/southbridge/amd/sb800/chip.h
new file mode 100644
index 0000000000..41f26d16c0
--- /dev/null
+++ b/src/southbridge/amd/sb800/chip.h
@@ -0,0 +1,34 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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 SB800_CHIP_H
+#define SB800_CHIP_H
+
+struct southbridge_amd_sb800_config
+{
+	u32 ide0_enable : 1;
+	u32 sata0_enable : 1;
+	u32 boot_switch_sata_ide : 1;
+	u32 hda_viddid;
+	u8  gpp_configuration;
+};
+struct chip_operations;
+extern struct chip_operations southbridge_amd_sb800_ops;
+
+#endif /* SB800_CHIP_H */
diff --git a/src/southbridge/amd/sb800/early_setup.c b/src/southbridge/amd/sb800/early_setup.c
new file mode 100644
index 0000000000..61a0e66588
--- /dev/null
+++ b/src/southbridge/amd/sb800/early_setup.c
@@ -0,0 +1,654 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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  _SB800_EARLY_SETUP_C_
+#define  _SB800_EARLY_SETUP_C_
+
+#include <reset.h>
+#include <arch/cpu.h>
+#include <cbmem.h>
+#include "sb800.h"
+#include "smbus.c"
+
+#define SMBUS_IO_BASE 0x6000	/* Is it a temporary SMBus I/O base address? */
+	 /*SIZE 0x40 */
+
+static void pmio_write(u8 reg, u8 value)
+{
+	outb(reg, PM_INDEX);
+	outb(value, PM_INDEX + 1);
+}
+
+static u8 pmio_read(u8 reg)
+{
+	outb(reg, PM_INDEX);
+	return inb(PM_INDEX + 1);
+}
+
+static void sb800_acpi_init(void) {
+	pmio_write(0x60, ACPI_PM_EVT_BLK & 0xFF);
+	pmio_write(0x61, ACPI_PM_EVT_BLK >> 8);
+	pmio_write(0x62, ACPI_PM1_CNT_BLK & 0xFF);
+	pmio_write(0x63, ACPI_PM1_CNT_BLK >> 8);
+	pmio_write(0x64, ACPI_PM_TMR_BLK & 0xFF);
+	pmio_write(0x65, ACPI_PM_TMR_BLK >> 8);
+	pmio_write(0x68, ACPI_GPE0_BLK & 0xFF);
+	pmio_write(0x69, ACPI_GPE0_BLK >> 8);
+
+	/* CpuControl is in \_PR.CPU0, 6 bytes */
+	pmio_write(0x66, ACPI_CPU_CONTROL & 0xFF);
+	pmio_write(0x67, ACPI_CPU_CONTROL >> 8);
+
+	pmio_write(0x6A, 0);	/* AcpiSmiCmdLo */
+	pmio_write(0x6B, 0);	/* AcpiSmiCmdHi */
+
+	pmio_write(0x6C, ACPI_PMA_CNT_BLK & 0xFF);
+	pmio_write(0x6D, ACPI_PMA_CNT_BLK >> 8);
+
+	pm_iowrite(0x74, 1<<0 | 1<<1 | 1<<4 | 1<<2); /* AcpiDecodeEnable, When set, SB uses
+					* the contents of the PM registers at
+					* index 60-6B to decode ACPI I/O address.
+					* AcpiSmiEn & SmiCmdEn*/
+}
+
+/* RPR 2.28 Get SB ASIC Revision.*/
+static u8 get_sb800_revision(void)
+{
+	device_t dev;
+	u8 rev_id;
+	u8 rev = 0;
+
+	/* if (rev != 0) return rev; */
+
+	dev = PCI_DEV(0, 0x14, 0);//pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
+
+	if (dev == PCI_DEV_INVALID) {
+		die("SMBUS controller not found\n");
+		/* NOT REACHED */
+	}
+	rev_id =  pci_read_config8(dev, 0x08);
+
+	if (rev_id == 0x40) {
+		rev = REV_SB800_A11;
+	} else if (rev_id == 0x41) {
+		rev = REV_SB800_A12;
+	} else {
+		die("It is not SB800 or SB810\r\n");
+	}
+
+	return rev;
+}
+
+#if 0
+static void sb800_clk_output_48Mhz(void)
+{
+	/* AcpiMMioDecodeEn */
+	u8 reg8;
+	reg8 = pmio_read(0x24);
+	reg8 |= 1;
+	reg8 &= ~(1 << 1);
+	pmio_write(0x24, reg8);
+
+	*(volatile u32 *)(0xFED80000+0xE00+0x40) &= ~((1 << 0) | (1 << 2)); /* 48Mhz */
+	*(volatile u32 *)(0xFED80000+0xE00+0x40) |= 1 << 1; /* 48Mhz */
+}
+#endif
+/***************************************
+* Legacy devices are mapped to LPC space.
+*	Serial port 0
+*	KBC Port
+*	ACPI Micro-controller port
+*	LPC ROM size
+*	This function does not change port 0x80 decoding.
+*	Console output through any port besides 0x3f8 is unsupported.
+*	If you use FWH ROMs, you have to setup IDSEL.
+***************************************/
+static void sb800_lpc_init(void)
+{
+	u8 reg8;
+	device_t dev;
+
+	//dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);	/* SMBUS controller */
+	dev = PCI_DEV(0, 0x14, 0);
+	/* NOTE: Set BootTimerDisable, otherwise it would keep rebooting!!
+	 * This bit has no meaning if debug strap is not enabled. So if the
+	 * board keeps rebooting and the code fails to reach here, we could
+	 * disable the debug strap first. */
+	reg8 = pmio_read(0x44+3);
+	reg8 |= 1 << 7;
+	pmio_write(0x44+3, reg8);
+
+	/* Enable lpc controller */
+	reg8 = pmio_read(0xEC);
+	reg8 |= 1 << 0;
+	pmio_write(0xEC, reg8);
+
+	dev = PCI_DEV(0, 0x14, 3);//pci_locate_device(PCI_ID(0x1002, 0x439d), 0);	/* LPC Controller */
+	/* Decode port 0x3f8-0x3ff (Serial 0) */
+	//#warning Serial port decode on LPC is hardcoded to 0x3f8
+	reg8 = pci_read_config8(dev, 0x44);
+	reg8 |= 1 << 6;
+	pci_write_config8(dev, 0x44, reg8);
+
+	/* Decode port 0x60 & 0x64 (PS/2 keyboard) and port 0x62 & 0x66 (ACPI)*/
+	reg8 = pci_read_config8(dev, 0x47);
+	reg8 |= (1 << 5) | (1 << 6);
+	pci_write_config8(dev, 0x47, reg8);
+
+	/* SuperIO, LPC ROM */
+	reg8 = pci_read_config8(dev, 0x48);
+	/* Decode ports 0x2e-0x2f, 0x4e-0x4f (SuperI/O configuration) */
+	reg8 |= (1 << 1) | (1 << 0);
+	/* Decode variable LPC ROM address ranges 1&2 (see register 0x68-0x6b, 0x6c-0x6f) */
+	reg8 |= (1 << 3) | (1 << 4);
+	/* Decode port 0x70-0x73 (RTC) */
+	reg8 |= 1 << 6;
+	pci_write_config8(dev, 0x48, reg8);
+}
+
+/* what is its usage? */
+static u32 get_sbdn(u32 bus)
+{
+	device_t dev;
+
+	/* Find the device. */
+	dev = PCI_DEV(bus, 0x14, 0);//pci_locate_device_on_bus(PCI_ID(0x1002, 0x4385), bus);
+	return (dev >> 15) & 0x1f;
+}
+
+static u8 dual_core(void)
+{
+	return (pci_read_config32(PCI_DEV(0, 0x18, 3), 0xE8) & (0x3<<12)) != 0;
+}
+
+/*
+ * RPR 2.6 C-state and VID/FID change for the K8 platform.
+ */
+static void enable_fid_change_on_sb(u32 sbbusn, u32 sbdn)
+{
+	u8 byte;
+	byte = pmio_read(0x80);
+	if (dual_core())
+		byte |= 1 << 2 | 1 << 1;
+	byte |= 1 << 3;
+	byte |= 1 << 4;
+	byte &= ~(1 << 7);
+	pmio_write(0x80, byte);
+
+	byte = pmio_read(0x7E);
+	byte |= 1 << 6;
+	byte &= ~(1 << 2);
+	pmio_write(0x7E, byte);
+
+	pmio_write(0x94, 0x01);
+
+	byte = pmio_read(0x89);
+	byte |= 1 << 4;
+	pmio_write(0x89, byte);
+
+	byte = pmio_read(0x9b);
+	byte &= ~(7 << 4);
+	byte |= 1 << 4;
+	pmio_write(0x9b, byte);
+
+	pmio_write(0x99, 0x10);
+
+	pmio_write(0x9A, 0x00);
+	pmio_write(0x96, 0x10);
+	pmio_write(0x97, 0x00);
+
+	byte = pmio_read(0x81);
+	byte &= ~(1 << 1);
+	pmio_write(0x81, byte);
+}
+
+void hard_reset(void)
+{
+	set_bios_reset();
+
+	/* full reset */
+	outb(0x0a, 0x0cf9);
+	outb(0x0e, 0x0cf9);
+}
+
+void soft_reset(void)
+{
+	set_bios_reset();
+	/* link reset */
+	outb(0x06, 0x0cf9);
+}
+
+#if 0
+static void sb800_pci_port80(void)
+{
+	u8 byte;
+	device_t dev;
+
+	/* P2P Bridge */
+	dev = PCI_DEV(0, 0x14, 4);//pci_locate_device(PCI_ID(0x1002, 0x4384), 0);
+
+	/* Chip Control: Enable subtractive decoding */
+	byte = pci_read_config8(dev, 0x40);
+	byte |= 1 << 5;
+	pci_write_config8(dev, 0x40, byte);
+
+	/* Misc Control: Enable subtractive decoding if 0x40 bit 5 is set */
+	byte = pci_read_config8(dev, 0x4B);
+	byte |= 1 << 7;
+	pci_write_config8(dev, 0x4B, byte);
+
+	/* The same IO Base and IO Limit here is meaningful because we set the
+	 * bridge to be subtractive. During early setup stage, we have to make
+	 * sure that data can go through port 0x80.
+	 */
+	/* IO Base: 0xf000 */
+	byte = pci_read_config8(dev, 0x1C);
+	byte |= 0xF << 4;
+	pci_write_config8(dev, 0x1C, byte);
+
+	/* IO Limit: 0xf000 */
+	byte = pci_read_config8(dev, 0x1D);
+	byte |= 0xF << 4;
+	pci_write_config8(dev, 0x1D, byte);
+
+	/* PCI Command: Enable IO response */
+	byte = pci_read_config8(dev, 0x04);
+	byte |= 1 << 0;
+	pci_write_config8(dev, 0x04, byte);
+
+	/* LPC controller */
+	dev = PCI_DEV(0, 0x14, 3);;//pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
+
+	byte = pci_read_config8(dev, 0x4A);
+	byte &= ~(1 << 5);	/* disable lpc port 80 */
+	pci_write_config8(dev, 0x4A, byte);
+}
+#endif
+#define BIT0	(1 << 0)
+#define BIT1	(1 << 1)
+#define BIT2	(1 << 2)
+#define BIT3	(1 << 3)
+#define BIT4	(1 << 4)
+#define BIT5	(1 << 5)
+#define BIT6	(1 << 6)
+#define BIT7	(1 << 7)
+
+struct pm_entry {
+	u8	port;
+	u8	mask;
+	u8	bit;
+};
+struct pm_entry const pm_table[] =
+{
+  {0x5D, 0x00, BIT0},
+  {0xD2, 0xCF, BIT4 + BIT5},
+  {0x12, 0x00, BIT0},
+  {0x28, 0xFF, BIT0},
+  {0x44 + 3, 0x7F, BIT7},
+  {0x48, 0xFF, BIT0},
+  {0x00, 0xFF, 0x0E},
+  {0x00 + 2, 0xFF, 0x40},
+  {0x00 + 3, 0xFF, 0x08},
+  {0x34, 0xEF, BIT0 + BIT1},
+  {0xEC, 0xFD, BIT1},
+  {0x5B, 0xF9, BIT1 + BIT2},
+  {0x08, 0xFE, BIT2 + BIT4},
+  {0x08 + 1, 0xFF, BIT0},
+  {0x54, 0x00, BIT4 + BIT7},
+  {0x04 + 3, 0xFD, BIT1},
+  {0x74, 0xF6, BIT0 + BIT3},
+  {0xF0, ~BIT2, 0x00},
+  {0xF8,     0x00, 0x6C},
+  {0xF8 + 1, 0x00, 0x27},
+  {0xF8 + 2, 0x00, 0x00},
+  {0xC4, 0xFE, 0x14},
+  {0xC0 + 2, 0xBF, 0x40},
+  {0xBE, 0xDD, BIT5},
+  // HPET workaround
+  {0x54 + 3, 0xFC, BIT0 + BIT1},
+  {0x54 + 2, 0x7F, BIT7},
+  {0x54 + 2, 0x7F, 0x00},
+  {0xC4, ~(BIT2 + BIT4), BIT2 + BIT4},
+  {0xC0, 0, 0xF9},
+  {0xC0 + 1, 0x04, 0x03},
+  {0xC2, 0x20, 0x58},
+  {0xC2 + 1, 0, 0x40},
+  {0xC2, ~(BIT4), BIT4},
+  {0x74, 0x00, BIT0 + BIT1 + BIT2 + BIT4},
+  {0xDE + 1, ~(BIT0 + BIT1), BIT0 + BIT1},
+  {0xDE, ~BIT4, BIT4},
+  {0xBA, ~BIT3, BIT3},
+  {0xBA + 1, ~BIT6, BIT6},
+  {0xBC, ~BIT1, BIT1},
+  {0xED, ~(BIT0 + BIT1), 0},
+  {0xDC, 0x7C, BIT0},
+
+//  {0xFF, 0xFF, 0xFF},
+  
+};
+
+static void sb800_lpc_port80(void)
+{
+	u8 byte;
+	device_t dev;
+
+	/* Enable LPC controller */
+	byte = pmio_read(0xEC);
+	byte |= 1 << 0;
+	pmio_write(0xEC, byte);
+
+	/* Enable port 80 LPC decode in pci function 3 configuration space. */
+	dev = PCI_DEV(0, 0x14, 3);//pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
+	byte = pci_read_config8(dev, 0x4a);
+	byte |= 1 << 5;		/* enable port 80 */
+	pci_write_config8(dev, 0x4a, byte);
+}
+
+/* sbDevicesPorInitTable */
+static void sb800_devices_por_init(void)
+{
+	device_t dev;
+	u8 byte;
+
+	printk(BIOS_INFO, "sb800_devices_por_init()\n");
+	/* SMBus Device, BDF:0-20-0 */
+	printk(BIOS_INFO, "sb800_devices_por_init(): SMBus Device, BDF:0-20-0\n");
+	dev = PCI_DEV(0, 0x14, 0);//pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
+
+	if (dev == PCI_DEV_INVALID) {
+		die("SMBUS controller not found\n");
+		/* NOT REACHED */
+	}
+	printk(BIOS_INFO, "SMBus controller enabled, sb revision is A%x\n",
+		    get_sb800_revision());
+
+	/* sbPorAtStartOfTblCfg */
+	/* rpr 4.1.Set A-Link bridge access address.
+	 * This is an I/O address. The I/O address must be on 16-byte boundry.  */
+	//pci_write_config32(dev, 0xf0, AB_INDX);
+	pmio_write(0xE0, AB_INDX & 0xFF);
+	pmio_write(0xE1, (AB_INDX >> 8) & 0xFF);
+	pmio_write(0xE2, (AB_INDX >> 16) & 0xFF);
+	pmio_write(0xE3, (AB_INDX >> 24) & 0xFF);
+
+	/* To enable AB/BIF DMA access, a specific register inside the BIF register space needs to be configured first. */
+	/* 4.2:Enables the SB800 to send transactions upstream over A-Link Express interface. */
+	axcfg_reg(0x04, 1 << 2, 1 << 2);
+	//axindxc_reg(0x21, 0xff, 0);
+
+	/* 4.15:Enabling Non-Posted Memory Write for the K8 Platform */
+	axindxc_reg(0x10, 1 << 9, 1 << 9);
+	/* END of sbPorAtStartOfTblCfg */
+
+	/* sbDevicesPorInitTables */
+	/* set smbus iobase */
+	//pci_write_config32(dev, 0x90, SMBUS_IO_BASE | 1);
+	/* The base address of SMBUS is set in a different way with sb700. */
+	byte = (SMBUS_IO_BASE & 0xFF) | 1;
+	pmio_write(0x2c, byte & 0xFF);
+	pmio_write(0x2d, SMBUS_IO_BASE >> 8);
+
+	/* AcpiMMioDecodeEn */
+	byte = pmio_read(0x24);
+	byte |= 1;
+	byte &= ~(1 << 1);
+	pmio_write(0x24, byte);
+	/* enable smbus controller interface */
+	//byte = pci_read_config8(dev, 0xd2);
+	//byte |= (1 << 0);
+	//pci_write_config8(dev, 0xd2, byte);
+
+	/* KB2RstEnable */
+	//pci_write_config8(dev, 0x40, 0x44);
+
+	/* Enable ISA Address 0-960K decoding */
+	//pci_write_config8(dev, 0x48, 0x0f);
+
+	/* Enable ISA  Address 0xC0000-0xDFFFF decode */
+	//pci_write_config8(dev, 0x49, 0xff);
+
+	/* Enable decode cycles to IO C50, C51, C52 GPM controls. */
+	//byte = pci_read_config8(dev, 0x41);
+	//byte &= 0x80;
+	//byte |= 0x33;
+	//pci_write_config8(dev, 0x41, byte);
+
+	/* Legacy DMA Prefetch Enhancement, CIM masked it. */
+	/* pci_write_config8(dev, 0x43, 0x1); */
+
+	/* clear any lingering errors, so the transaction will run */
+	outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
+
+	/* IDE Device, BDF:0-20-1 */
+	printk(BIOS_INFO, "sb800_devices_por_init(): IDE Device, BDF:0-20-1\n");
+	dev = PCI_DEV(0, 0x14, 1);//pci_locate_device(PCI_ID(0x1002, 0x439C), 0);
+	/* Disable prefetch */
+	byte = pci_read_config8(dev, 0x63);
+	byte |= 0x1;
+	pci_write_config8(dev, 0x63, byte);
+
+	/* LPC Device, BDF:0-20-3 */
+	printk(BIOS_INFO, "sb800_devices_por_init(): LPC Device, BDF:0-20-3\n");
+	dev = PCI_DEV(0, 0x14, 3);//pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
+	/* DMA enable */
+	pci_write_config8(dev, 0x40, 0x04);
+
+	/* IO Port Decode Enable */
+	pci_write_config8(dev, 0x44, 0xFF);
+	pci_write_config8(dev, 0x45, 0xFF);
+	pci_write_config8(dev, 0x46, 0xC3);
+	pci_write_config8(dev, 0x47, 0xFF);
+
+	/* IO/Mem Port Decode Enable, I don't know why CIM disable some ports.
+	 *  Disable LPC TimeOut counter, enable SuperIO Configuration Port (2e/2f),
+	 * Alternate SuperIO Configuration Port (4e/4f), Wide Generic IO Port (64/65).
+	 * Enable bits for LPC ROM memory address range 1&2 for 1M ROM setting.*/
+	byte = pci_read_config8(dev, 0x48);
+	byte |= (1 << 1) | (1 << 0);	/* enable Super IO config port 2e-2h, 4e-4f */
+	byte |= (1 << 3) | (1 << 4);	/* enable for LPC ROM address range1&2, Enable 512KB rom access at 0xFFF80000 - 0xFFFFFFFF */
+	byte |= 1 << 6;		/* enable for RTC I/O range */
+	pci_write_config8(dev, 0x48, byte);
+	pci_write_config8(dev, 0x49, 0xFF);
+	/* Enable 0x480-0x4bf, 0x4700-0x470B */
+	byte = pci_read_config8(dev, 0x4A);
+	byte |= ((1 << 1) + (1 << 6));	/*0x42, save the configuraion for port 0x80. */
+	pci_write_config8(dev, 0x4A, byte);
+
+	/* Set LPC ROM size, it has been done in sb800_lpc_init().
+	 * enable LPC ROM range, 0xfff8: 512KB, 0xfff0: 1MB;
+	 * enable LPC ROM range, 0xfff8: 512KB, 0xfff0: 1MB
+	 * pci_write_config16(dev, 0x68, 0x000e)
+	 * pci_write_config16(dev, 0x6c, 0xfff0);*/
+
+	/* Enable Tpm12_en and Tpm_legacy. I don't know what is its usage and copied from CIM. */
+	pci_write_config8(dev, 0x7C, 0x05);
+
+	/* P2P Bridge, BDF:0-20-4, the configuration of the registers in this dev are copied from CIM,
+	 */
+	printk(BIOS_INFO, "sb800_devices_por_init(): P2P Bridge, BDF:0-20-4\n");
+	dev = PCI_DEV(0, 0x14, 4);//pci_locate_device(PCI_ID(0x1002, 0x4384), 0);
+
+	/* Arbiter enable. */
+	pci_write_config8(dev, 0x43, 0xff);
+
+	/* Set PCDMA request into hight priority list. */
+	/* pci_write_config8(dev, 0x49, 0x1) */ ;
+
+	pci_write_config8(dev, 0x40, 0x26);
+
+	pci_write_config8(dev, 0x0d, 0x40);
+	pci_write_config8(dev, 0x1b, 0x40);
+	/* Enable PCIB_DUAL_EN_UP will fix potential problem with PCI cards. */
+	pci_write_config8(dev, 0x50, 0x01);
+
+	/* SATA Device, BDF:0-17-0, Non-Raid-5 SATA controller */
+	printk(BIOS_INFO, "sb800_devices_por_init(): SATA Device, BDF:0-18-0\n");
+	dev = PCI_DEV(0, 0x11, 0);//pci_locate_device(PCI_ID(0x1002, 0x4390), 0);
+
+	/*PHY Global Control*/
+	pci_write_config16(dev, 0x86, 0x2C00);
+}
+
+/* sbPmioPorInitTable, Pre-initializing PMIO register space
+* The power management (PM) block is resident in the PCI/LPC/ISA bridge.
+* The PM regs are accessed via IO mapped regs 0xcd6 and 0xcd7.
+* The index address is first programmed into IO reg 0xcd6.
+* Read or write values are accessed through IO reg 0xcd7.
+*/
+#if 0
+static void sb800_pmio_por_init(void)
+{
+	u8 byte, i;
+
+	printk(BIOS_INFO, "sb800_pmio_por_init()\n");
+
+	byte = pmio_read(0xD2);
+	byte |= 3 << 4;
+	pmio_write(0xD2, byte);
+
+	byte = pmio_read(0x5D);
+	byte &= 3;
+	byte |= 1;
+	pmio_write(0x5D, byte);
+
+	/* Watch Dog Timer Control
+	 * Set watchdog time base to 0xfec000f0 to avoid SCSI card boot failure.
+	 * But I don't find WDT is enabled in SMBUS 0x41 bit3 in CIM.
+	 */
+	pmio_write(0x6c, 0xf0);
+	pmio_write(0x6d, 0x00);
+	pmio_write(0x6e, 0xc0);
+	pmio_write(0x6f, 0xfe);
+
+	/* rpr2.15: Enabling Spread Spectrum */
+	byte = pmio_read(0x42);
+	byte |= 1 << 7;
+	pmio_write(0x42, byte);
+	/* TODO: Check if it is necessary. IDE reset */
+	byte = pmio_read(0xB2);
+	byte |= 1 << 0;
+	pmio_write(0xB2, byte);
+
+	for (i=0; i<sizeof(pm_table)/sizeof(struct pm_entry); i++) {
+		byte = pmio_read(pm_table[i].port);
+		byte &= pm_table[i].mask;
+		byte |= pm_table[i].bit;
+		pmio_write(pm_table[i].port, byte);
+	}
+	pmio_write(0x00, 0x0E);
+	pmio_write(0x01, 0x00);
+	pmio_write(0x02, 0x4F);
+	pmio_write(0x03, 0x4A);
+}
+#endif
+
+/*
+* Add any south bridge setting.
+*/
+static void sb800_pci_cfg(void)
+{
+	device_t dev;
+	u8 byte;
+
+	/* SMBus Device, BDF:0-20-0 */
+	dev = PCI_DEV(0, 0x14, 0);//pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
+	/* Enable watchdog decode timer */
+	byte = pci_read_config8(dev, 0x41);
+	byte |= (1 << 3);
+	pci_write_config8(dev, 0x41, byte);
+
+	/* Set to 1 to reset USB on the software (such as IO-64 or IO-CF9 cycles)
+	 * generated PCIRST#. */
+	byte = pmio_read(0x65);
+	byte |= (1 << 4);
+	pmio_write(0x65, byte);
+
+	/* IDE Device, BDF:0-20-1 */
+	dev = PCI_DEV(0, 0x14, 1);//pci_locate_device(PCI_ID(0x1002, 0x439C), 0);
+	/* Enable IDE Explicit prefetch, 0x63[0] clear */
+	byte = pci_read_config8(dev, 0x63);
+	byte &= 0xfe;
+	pci_write_config8(dev, 0x63, byte);
+
+	/* LPC Device, BDF:0-20-3 */
+	/* The code below is ported from old chipset. It is not
+	 * metioned in RPR. But I keep them. The registers and the
+	 * comments are compatible. */
+	dev = PCI_DEV(0, 0x14, 3);//pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
+	/* Enabling LPC DMA function. */
+	byte = pci_read_config8(dev, 0x40);
+	byte |= (1 << 2);
+	pci_write_config8(dev, 0x40, byte);
+	/* Disabling LPC TimeOut. 0x48[7] clear. */
+	byte = pci_read_config8(dev, 0x48);
+	byte &= 0x7f;
+	pci_write_config8(dev, 0x48, byte);
+	/* Disabling LPC MSI Capability, 0x78[1] clear. */
+	byte = pci_read_config8(dev, 0x78);
+	byte &= 0xfd;
+	pci_write_config8(dev, 0x78, byte);
+
+	/* SATA Device, BDF:0-17-0, Non-Raid-5 SATA controller */
+	dev = PCI_DEV(0, 0x11, 0);//pci_locate_device(PCI_ID(0x1002, 0x4390), 0);
+	/* rpr7.12 SATA MSI and D3 Power State Capability. */
+	byte = pci_read_config8(dev, 0x40);
+	byte |= 1 << 0;
+	pci_write_config8(dev, 0x40, byte);
+	if (get_sb800_revision() <= 0x12)
+		pci_write_config8(dev, 0x34, 0x70); /* set 0x61 to 0x70 if S1 is not supported. */
+	else
+		pci_write_config8(dev, 0x34, 0x50); /* set 0x61 to 0x50 if S1 is not supported. */
+	byte &= ~(1 << 0);
+	pci_write_config8(dev, 0x40, byte);
+}
+
+/*
+*/
+static void sb800_por_init(void)
+{
+	/* sbDevicesPorInitTable + sbK8PorInitTable */
+	sb800_devices_por_init();
+
+	/* sbPmioPorInitTable + sbK8PmioPorInitTable */
+	//sb800_pmio_por_init();
+}
+
+/*
+* It should be called during early POST after memory detection and BIOS shadowing but before PCI bus enumeration.
+*/
+static void sb800_before_pci_init(void)
+{
+	sb800_pci_cfg();
+}
+
+/*
+* This function should be called after enable_sb800_smbus().
+*/
+static void sb800_early_setup(void)
+{
+	printk(BIOS_INFO, "sb800_early_setup()\n");
+	sb800_por_init();
+	sb800_acpi_init();
+}
+
+static int smbus_read_byte(u32 device, u32 address)
+{
+	return do_smbus_read_byte(SMBUS_IO_BASE, device, address);
+}
+#endif
diff --git a/src/southbridge/amd/sb800/enable_usbdebug.c b/src/southbridge/amd/sb800/enable_usbdebug.c
new file mode 100644
index 0000000000..d58437a68e
--- /dev/null
+++ b/src/southbridge/amd/sb800/enable_usbdebug.c
@@ -0,0 +1,52 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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 <stdint.h>
+#include <arch/io.h>
+#include <arch/romcc_io.h>
+#include <usbdebug.h>
+#include <device/pci_def.h>
+#include "sb800.h"
+
+#ifndef SB800_DEVN_BASE
+#define SB800_DEVN_BASE 0
+#endif
+
+#define EHCI_EOR		(CONFIG_EHCI_BAR + 0x20)
+#define DEBUGPORT_MISC_CONTROL	(EHCI_EOR + 0x80)
+
+void set_debug_port(unsigned int port)
+{
+	u32 reg32;
+
+	/* Write the port number to DEBUGPORT_MISC_CONTROL[31:28]. */
+	reg32 = read32(DEBUGPORT_MISC_CONTROL);
+	reg32 &= ~(0xf << 28);
+	reg32 |= (port << 28);
+	reg32 |= (1 << 27); /* Enable Debug Port port number remapping. */
+	write32(DEBUGPORT_MISC_CONTROL, reg32);
+}
+
+
+void sb800_enable_usbdebug(unsigned int port)
+{
+	pci_write_config32(PCI_DEV(0, SB800_DEVN_BASE + 0x13, 5),
+			   EHCI_BAR_INDEX, CONFIG_EHCI_BAR);
+	pci_write_config8(PCI_DEV(0, SB800_DEVN_BASE + 0x13, 5), 0x04, 0x2);	/* mem space enabe */
+	set_debug_port(port);
+}
diff --git a/src/southbridge/amd/sb800/fadt.c b/src/southbridge/amd/sb800/fadt.c
new file mode 100644
index 0000000000..6eb5c0a737
--- /dev/null
+++ b/src/southbridge/amd/sb800/fadt.c
@@ -0,0 +1,160 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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
+ */
+
+/*
+ * ACPI - create the Fixed ACPI Description Tables (FADT)
+ */
+
+#include <string.h>
+#include <console/console.h>
+#include <arch/acpi.h>
+#include <arch/io.h>
+#include <device/device.h>
+#include "sb800.h"
+
+void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
+{
+	acpi_header_t *header = &(fadt->header);
+
+	printk(BIOS_DEBUG, "pm_base: 0x%04x\n", SB800_ACPI_IO_BASE);
+
+	/* Prepare the header */
+	memset((void *)fadt, 0, sizeof(acpi_fadt_t));
+	memcpy(header->signature, "FACP", 4);
+	header->length = 244;
+	header->revision = 3;
+	memcpy(header->oem_id, OEM_ID, 6);
+	memcpy(header->oem_table_id, "COREBOOT", 8);
+	memcpy(header->asl_compiler_id, ASLC, 4);
+	header->asl_compiler_revision = 0;
+
+	fadt->firmware_ctrl = (u32) facs;
+	fadt->dsdt = (u32) dsdt;
+	/* 3=Workstation,4=Enterprise Server, 7=Performance Server */
+	fadt->preferred_pm_profile = 0x03;
+	fadt->sci_int = 9;
+	/* disable system management mode by setting to 0: */
+	fadt->smi_cmd = 0;
+	fadt->acpi_enable = 0xf0;
+	fadt->acpi_disable = 0xf1;
+	fadt->s4bios_req = 0x0;
+	fadt->pstate_cnt = 0xe2;
+	fadt->pm1a_evt_blk = ACPI_PM_EVT_BLK;
+	fadt->pm1b_evt_blk = 0x0000;
+	fadt->pm1a_cnt_blk = ACPI_PM1_CNT_BLK;
+	fadt->pm1b_cnt_blk = 0x0000;
+	fadt->pm2_cnt_blk = ACPI_PMA_CNT_BLK;
+	fadt->pm_tmr_blk = ACPI_PM_TMR_BLK;
+	fadt->gpe0_blk = ACPI_GPE0_BLK;
+	fadt->gpe1_blk = 0x0000;	/* we dont have gpe1 block, do we? */
+
+	fadt->pm1_evt_len = 4;
+	fadt->pm1_cnt_len = 2;
+	fadt->pm2_cnt_len = 1;
+	fadt->pm_tmr_len = 4;
+	fadt->gpe0_blk_len = 8;
+	fadt->gpe1_blk_len = 0;
+	fadt->gpe1_base = 0;
+
+	fadt->cst_cnt = 0xe3;
+	fadt->p_lvl2_lat = 101;
+	fadt->p_lvl3_lat = 1001;
+	fadt->flush_size = 0;
+	fadt->flush_stride = 0;
+	fadt->duty_offset = 1;
+	fadt->duty_width = 3;
+	fadt->day_alrm = 0;	/* 0x7d these have to be */
+	fadt->mon_alrm = 0;	/* 0x7e added to cmos.layout */
+	fadt->century = 0;	/* 0x7f to make rtc alrm work */
+	fadt->iapc_boot_arch = 0x3;	/* See table 5-11 */
+	fadt->flags = 0x0001c1a5;/* 0x25; */
+
+	fadt->res2 = 0;
+
+	fadt->reset_reg.space_id = 1;
+	fadt->reset_reg.bit_width = 8;
+	fadt->reset_reg.bit_offset = 0;
+	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.addrl = 0xcf9;
+	fadt->reset_reg.addrh = 0x0;
+
+	fadt->reset_value = 6;
+	fadt->x_firmware_ctl_l = (u32) facs;
+	fadt->x_firmware_ctl_h = 0;
+	fadt->x_dsdt_l = (u32) dsdt;
+	fadt->x_dsdt_h = 0;
+
+	fadt->x_pm1a_evt_blk.space_id = 1;
+	fadt->x_pm1a_evt_blk.bit_width = 32;
+	fadt->x_pm1a_evt_blk.bit_offset = 0;
+	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.addrl = ACPI_PM_EVT_BLK;
+	fadt->x_pm1a_evt_blk.addrh = 0x0;
+
+	fadt->x_pm1b_evt_blk.space_id = 1;
+	fadt->x_pm1b_evt_blk.bit_width = 4;
+	fadt->x_pm1b_evt_blk.bit_offset = 0;
+	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.addrl = 0x0;
+	fadt->x_pm1b_evt_blk.addrh = 0x0;
+
+	fadt->x_pm1a_cnt_blk.space_id = 1;
+	fadt->x_pm1a_cnt_blk.bit_width = 16;
+	fadt->x_pm1a_cnt_blk.bit_offset = 0;
+	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.addrl = ACPI_PM1_CNT_BLK;
+	fadt->x_pm1a_cnt_blk.addrh = 0x0;
+
+	fadt->x_pm1b_cnt_blk.space_id = 1;
+	fadt->x_pm1b_cnt_blk.bit_width = 2;
+	fadt->x_pm1b_cnt_blk.bit_offset = 0;
+	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.addrl = 0x0;
+	fadt->x_pm1b_cnt_blk.addrh = 0x0;
+
+	fadt->x_pm2_cnt_blk.space_id = 1;
+	fadt->x_pm2_cnt_blk.bit_width = 0;
+	fadt->x_pm2_cnt_blk.bit_offset = 0;
+	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.addrl = ACPI_PMA_CNT_BLK;
+	fadt->x_pm2_cnt_blk.addrh = 0x0;
+
+	fadt->x_pm_tmr_blk.space_id = 1;
+	fadt->x_pm_tmr_blk.bit_width = 32;
+	fadt->x_pm_tmr_blk.bit_offset = 0;
+	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.addrl = ACPI_PM_TMR_BLK;
+	fadt->x_pm_tmr_blk.addrh = 0x0;
+
+	fadt->x_gpe0_blk.space_id = 1;
+	fadt->x_gpe0_blk.bit_width = 32;
+	fadt->x_gpe0_blk.bit_offset = 0;
+	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.addrl = ACPI_GPE0_BLK;
+	fadt->x_gpe0_blk.addrh = 0x0;
+
+	fadt->x_gpe1_blk.space_id = 1;
+	fadt->x_gpe1_blk.bit_width = 0;
+	fadt->x_gpe1_blk.bit_offset = 0;
+	fadt->x_gpe1_blk.resv = 0;
+	fadt->x_gpe1_blk.addrl = 0;
+	fadt->x_gpe1_blk.addrh = 0x0;
+
+	header->checksum = acpi_checksum((void *)fadt, sizeof(acpi_fadt_t));
+}
diff --git a/src/southbridge/amd/sb800/hda.c b/src/southbridge/amd/sb800/hda.c
new file mode 100644
index 0000000000..07ae70b49f
--- /dev/null
+++ b/src/southbridge/amd/sb800/hda.c
@@ -0,0 +1,213 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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 <arch/io.h>
+#include <delay.h>
+#include "sb800.h"
+
+#define HDA_ICII_REG 0x68
+#define   HDA_ICII_BUSY (1 << 0)
+#define   HDA_ICII_VALID  (1 << 1)
+
+static int set_bits(u32 port, u32 mask, u32 val)
+{
+	u32 dword;
+	int count;
+
+	/* Write (val & ~mask) to port */
+	val &= mask;
+	dword = read32(port);
+	dword &= ~mask;
+	dword |= val;
+	write32(port, dword);
+
+	/* Wait for readback of register to
+	 * match what was just written to it
+	 */
+	count = 50;
+	do {
+		/* Wait 1ms based on BKDG wait time */
+		mdelay(1);
+		dword = read32(port);
+		dword &= mask;
+	} while ((dword != val) && --count);
+
+	/* Timeout occured */
+	if (!count)
+		return -1;
+	return 0;
+}
+
+static u32 codec_detect(u32 base)
+{
+	u32 dword;
+
+	/* Before Codec detection, we need to set the GPIO167-170 as
+	 * AZ_SDINx. */
+	/* Set Bit0 to 0 to enter reset state (BAR + 0x8)[0] */
+	if (set_bits(base + 0x08, 1, 0) == -1)
+		goto no_codec;
+
+	/* Set Bit 0 to 1 to exit reset state (BAR + 0x8)[0] */
+	if (set_bits(base + 0x08, 1, 1) == -1)
+		goto no_codec;
+
+	/* Delay for 1 ms since the BKDG does */
+	mdelay(1);
+
+	/* Read in Codec location (BAR + 0xe)[3..0]*/
+	dword = read32(base + 0xe);
+	dword &= 0x0F;
+	if (!dword)
+		goto no_codec;
+
+	return dword;
+
+no_codec:
+	/* Codec Not found */
+	/* Put HDA back in reset (BAR + 0x8) [0] */
+	set_bits(base + 0x08, 1, 0);
+	printk(BIOS_DEBUG, "No codec!\n");
+	return 0;
+}
+
+/**
+ *  Wait 50usec for for the codec to indicate it is ready
+ *  no response would imply that the codec is non-operative
+ */
+static int wait_for_ready(u32 base)
+{
+	/* Use a 50 usec timeout - the Linux kernel uses the
+	 * same duration */
+
+	int timeout = 50;
+
+	while(timeout--) {
+		u32 dword=read32(base +  HDA_ICII_REG);
+		if (!(dword & HDA_ICII_BUSY))
+			return 0;
+		udelay(1);
+	}
+
+	return -1;
+}
+
+/**
+ *  Wait 50usec for for the codec to indicate that it accepted
+ *  the previous command.  No response would imply that the code
+ *  is non-operative
+ */
+static int wait_for_valid(u32 base)
+{
+	/* Use a 50 usec timeout - the Linux kernel uses the
+	 * same duration */
+
+	int timeout = 50;
+	while(timeout--) {
+		u32 dword = read32(base + HDA_ICII_REG);
+		if ((dword & (HDA_ICII_VALID | HDA_ICII_BUSY)) ==
+			HDA_ICII_VALID)
+			return 0;
+		udelay(1);
+	}
+
+	return 1;
+}
+
+static void codec_init(u32 base, int addr)
+{
+	u32 dword;
+
+	/* 1 */
+	if (wait_for_ready(base) == -1)
+		return;
+
+	dword = (addr << 28) | 0x000f0000;
+	write32(base + 0x60, dword);
+
+	if (wait_for_valid(base) == -1)
+		return;
+
+	dword = read32(base + 0x64);
+
+	/* 2 */
+	printk(BIOS_DEBUG, "%x(th) codec viddid: %08x\n", addr, dword);
+}
+
+static void codecs_init(u32 base, u32 codec_mask)
+{
+	int i;
+	for (i = 3; i >= 0; i--) {
+		if (codec_mask & (1 << i))
+			codec_init(base, i);
+	}
+}
+
+static void hda_init(struct device *dev)
+{
+	u32 dword;
+	u32 base;
+	struct resource *res;
+	u32 codec_mask;
+
+	/* Program the 2C to 0x437b1002 */
+	dword = 0x43831002;
+	pci_write_config32(dev, 0x2c, dword);
+
+	/* Read in BAR */
+	/* Is this right? HDA allows for a 64-bit BAR
+	 * but this is only setup for a 32-bit one
+	 */
+	res = find_resource(dev, 0x10);
+	if (!res)
+		return;
+
+	base = (u32)res->base;
+	printk(BIOS_DEBUG, "base = 0x%x\n", base);
+	codec_mask = codec_detect(base);
+
+	if (codec_mask) {
+		printk(BIOS_DEBUG, "codec_mask = %02x\n", codec_mask);
+		codecs_init(base, codec_mask);
+	}
+}
+
+static struct pci_operations lops_pci = {
+	.set_subsystem = pci_dev_set_subsystem,
+};
+
+static struct device_operations hda_audio_ops = {
+	.read_resources = pci_dev_read_resources,
+	.set_resources = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init = hda_init,
+	.scan_bus = 0,
+	.ops_pci = &lops_pci,
+};
+
+static const struct pci_driver hdaaudio_driver __pci_driver = {
+	.ops = &hda_audio_ops,
+	.vendor = PCI_VENDOR_ID_ATI,
+	.device = PCI_DEVICE_ID_ATI_SB800_HDA,
+};
diff --git a/src/southbridge/amd/sb800/ide.c b/src/southbridge/amd/sb800/ide.c
new file mode 100644
index 0000000000..eb287f2cb2
--- /dev/null
+++ b/src/southbridge/amd/sb800/ide.c
@@ -0,0 +1,83 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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 "sb800.h"
+
+static void ide_init(struct device *dev)
+{
+	struct southbridge_amd_sb800_config *conf;
+	/* Enable ide devices so the linux ide driver will work */
+	u32 dword;
+	u8 byte;
+
+	conf = dev->chip_info;
+
+	/* RPR9.1 disable MSI */
+	/* TODO: For A14, it should set as 1. I doubt it. */
+	dword = pci_read_config32(dev, 0x70);
+	dword &= ~(1 << 16);
+	pci_write_config32(dev, 0x70, dword);
+
+	/* Ultra DMA mode */
+	/* enable UDMA */
+	byte = pci_read_config8(dev, 0x54);
+	byte |= 1 << 0;
+	pci_write_config8(dev, 0x54, byte);
+
+	/* Enable I/O Access&& Bus Master */
+	dword = pci_read_config16(dev, 0x4);
+	dword |= 1 << 2;
+	pci_write_config16(dev, 0x4, dword);
+
+	/* set ide as primary, if you want to boot from IDE, you'd better set it
+	 * in mainboard/Config.lb */
+	if (conf->boot_switch_sata_ide == 1) {
+		byte = pci_read_config8(dev, 0xAD);
+		byte |= 1 << 4;
+		pci_write_config8(dev, 0xAD, byte);
+	}
+
+#if CONFIG_PCI_ROM_RUN == 1
+	pci_dev_init(dev);
+#endif
+}
+
+static struct pci_operations lops_pci = {
+	.set_subsystem = pci_dev_set_subsystem,
+};
+
+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,
+	.ops_pci = &lops_pci,
+};
+
+static const struct pci_driver ide_driver __pci_driver = {
+	.ops = &ide_ops,
+	.vendor = PCI_VENDOR_ID_ATI,
+	.device = PCI_DEVICE_ID_ATI_SB800_IDE,
+};
diff --git a/src/southbridge/amd/sb800/lpc.c b/src/southbridge/amd/sb800/lpc.c
new file mode 100644
index 0000000000..50ff4d4cec
--- /dev/null
+++ b/src/southbridge/amd/sb800/lpc.c
@@ -0,0 +1,243 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pnp.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include <pc80/mc146818rtc.h>
+#include <pc80/isa-dma.h>
+#include <bitops.h>
+#include <arch/io.h>
+#include "sb800.h"
+
+static void lpc_init(device_t dev)
+{
+	u8 byte;
+	u32 dword;
+	device_t sm_dev;
+
+	/* Enable the LPC Controller */
+	sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
+	dword = pci_read_config32(sm_dev, 0x64);
+	dword |= 1 << 20;
+	pci_write_config32(sm_dev, 0x64, dword);
+
+	/* Initialize isa dma */
+	isa_dma_init();
+
+	/* Enable DMA transaction on the LPC bus */
+	byte = pci_read_config8(dev, 0x40);
+	byte |= (1 << 2);
+	pci_write_config8(dev, 0x40, byte);
+
+	/* Disable the timeout mechanism on LPC */
+	byte = pci_read_config8(dev, 0x48);
+	byte &= ~(1 << 7);
+	pci_write_config8(dev, 0x48, byte);
+
+	/* Disable LPC MSI Capability */
+	byte = pci_read_config8(dev, 0x78);
+	byte &= ~(1 << 1);
+	byte &= ~(1 << 0);	/* Keep the old way. i.e., when bus master/DMA cycle is going
+				   on on LPC, it holds PCI grant, so no LPC slave cycle can
+				   interrupt and visit LPC. */
+	pci_write_config8(dev, 0x78, byte);
+
+	/* bit0: Enable prefetch a cacheline (64 bytes) when Host reads code from SPI rom */
+	/* bit3: Fix SPI_CS# timing issue when running at 66M. TODO:A12. */
+	byte = pci_read_config8(dev, 0xBB);
+	byte |= 1 << 0 | 1 << 3;
+	pci_write_config8(dev, 0xBB, byte);
+}
+
+static void sb800_lpc_read_resources(device_t dev)
+{
+	struct resource *res;
+
+	/* Get the normal pci resources of this device */
+	pci_dev_read_resources(dev);	/* We got one for APIC, or one more for TRAP */
+
+	pci_get_resource(dev, 0xA0); /* SPI ROM base address */
+
+	/* Add an extra subtractive resource for both memory and I/O. */
+	res = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0));
+	res->base = 0;
+	res->size = 0x1000;
+	res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE |
+		     IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+
+	res = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0));
+	res->base = 0xff800000;
+	res->size = 0x00800000; /* 8 MB for flash */
+	res->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE |
+		     IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+
+	//res = new_resource(dev, 3); /* IOAPIC */
+	//res->base = 0xfec00000;
+	//res->size = 0x00001000;
+	//res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+
+	compact_resources(dev);
+}
+
+static void sb800_lpc_set_resources(struct device *dev)
+{
+	struct resource *res;
+
+	pci_dev_set_resources(dev);
+
+	/* Specical case. SPI Base Address. The SpiRomEnable should be set. */
+	res = find_resource(dev, 0xA0);
+	pci_write_config32(dev, 0xA0, res->base | 1 << 1);
+
+}
+
+/**
+ * @brief Enable resources for children devices
+ *
+ * @param dev the device whos children's resources are to be enabled
+ *
+ */
+static void sb800_lpc_enable_childrens_resources(device_t dev)
+{
+	struct bus *link;
+	u32 reg, reg_x;
+	int var_num = 0;
+	u16 reg_var[3];
+
+	reg = pci_read_config32(dev, 0x44);
+	reg_x = pci_read_config32(dev, 0x48);
+
+	for (link = dev->link_list; link; link = link->next) {
+		device_t child;
+		for (child = link->children; child;
+		     child = child->sibling) {
+			if (child->enabled
+			    && (child->path.type == DEVICE_PATH_PNP)) {
+				struct resource *res;
+				for (res = child->resource_list; res; res = res->next) {
+					u32 base, end;	/*  don't need long long */
+					if (!(res->flags & IORESOURCE_IO))
+						continue;
+					base = res->base;
+					end = resource_end(res);
+					printk(BIOS_DEBUG, "sb800 lpc decode:%s, base=0x%08x, end=0x%08x\n",
+					     dev_path(child), base, end);
+					switch (base) {
+					case 0x60:	/*  KB */
+					case 0x64:	/*  MS */
+						reg |= (1 << 29);
+						break;
+					case 0x3f8:	/*  COM1 */
+						reg |= (1 << 6);
+						break;
+					case 0x2f8:	/*  COM2 */
+						reg |= (1 << 7);
+						break;
+					case 0x378:	/*  Parallal 1 */
+						reg |= (1 << 0);
+						break;
+					case 0x3f0:	/*  FD0 */
+						reg |= (1 << 26);
+						break;
+					case 0x220:	/*  Aduio 0 */
+						reg |= (1 << 8);
+						break;
+					case 0x300:	/*  Midi 0 */
+						reg |= (1 << 18);
+						break;
+					case 0x400:
+						reg_x |= (1 << 16);
+						break;
+					case 0x480:
+						reg_x |= (1 << 17);
+						break;
+					case 0x500:
+						reg_x |= (1 << 18);
+						break;
+					case 0x580:
+						reg_x |= (1 << 19);
+						break;
+					case 0x4700:
+						reg_x |= (1 << 22);
+						break;
+					case 0xfd60:
+						reg_x |= (1 << 23);
+						break;
+					default:
+						if (var_num >= 3)
+							continue;	/* only 3 var ; compact them ? */
+						switch (var_num) {
+						case 0:
+							reg_x |= (1 << 2);
+							break;
+						case 1:
+							reg_x |= (1 << 24);
+							break;
+						case 2:
+							reg_x |= (1 << 25);
+							break;
+						}
+						reg_var[var_num++] =
+						    base & 0xffff;
+					}
+				}
+			}
+		}
+	}
+	pci_write_config32(dev, 0x44, reg);
+	pci_write_config32(dev, 0x48, reg_x);
+	/* Set WideIO for as many IOs found (fall through is on purpose) */
+	switch (var_num) {
+	case 2:
+		pci_write_config16(dev, 0x90, reg_var[2]);
+	case 1:
+		pci_write_config16(dev, 0x66, reg_var[1]);
+	case 0:
+		pci_write_config16(dev, 0x64, reg_var[0]);
+		break;
+	}
+}
+
+static void sb800_lpc_enable_resources(device_t dev)
+{
+	pci_dev_enable_resources(dev);
+	sb800_lpc_enable_childrens_resources(dev);
+}
+
+static struct pci_operations lops_pci = {
+	.set_subsystem = pci_dev_set_subsystem,
+};
+
+static struct device_operations lpc_ops = {
+	.read_resources = sb800_lpc_read_resources,
+	.set_resources = sb800_lpc_set_resources,
+	.enable_resources = sb800_lpc_enable_resources,
+	.init = lpc_init,
+	.scan_bus = scan_static_bus,
+	.ops_pci = &lops_pci,
+};
+static const struct pci_driver lpc_driver __pci_driver = {
+	.ops = &lpc_ops,
+	.vendor = PCI_VENDOR_ID_ATI,
+	.device = PCI_DEVICE_ID_ATI_SB800_LPC,
+};
diff --git a/src/southbridge/amd/sb800/pci.c b/src/southbridge/amd/sb800/pci.c
new file mode 100644
index 0000000000..465f9de123
--- /dev/null
+++ b/src/southbridge/amd/sb800/pci.c
@@ -0,0 +1,76 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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 "sb800.h"
+
+static void pci_init(struct device *dev)
+{
+	u32 dword;
+	u8 byte;
+
+	/* RPR 6.1 Enables the PCI-bridge subtractive decode */
+	/* This setting is strongly recommended since it supports some legacy PCI add-on cards,such as BIOS debug cards */
+	byte = pci_read_config8(dev, 0x4B);
+	byte |= 1 << 7;
+	pci_write_config8(dev, 0x4B, byte);
+	byte = pci_read_config8(dev, 0x40);
+	byte |= 1 << 5;
+	pci_write_config8(dev, 0x40, byte);
+
+	/* RPR6.2 PCI-bridge upstream dual address window */
+	/* this setting is applicable if the system memory is more than 4GB,and the PCI device can support dual address access */
+	byte = pci_read_config8(dev, 0x50);
+	byte |= 1 << 0;
+	pci_write_config8(dev, 0x50, byte);
+
+	/* RPR 6.3 Enable One-Prefetch-Channel Mode */
+	dword = pci_read_config32(dev, 0x64);
+	dword |= 1 << 20;
+	pci_write_config32(dev, 0x64, dword);
+
+	/* rpr6.4 Adjusting CLKRUN# */
+	dword = pci_read_config32(dev, 0x64);
+	dword |= (1 << 15);
+	pci_write_config32(dev, 0x64, dword);
+}
+
+static struct pci_operations lops_pci = {
+	.set_subsystem = 0,
+};
+
+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,
+	.reset_bus = pci_bus_reset,
+	.ops_pci = &lops_pci,
+};
+
+static const struct pci_driver pci_driver __pci_driver = {
+	.ops = &pci_ops,
+	.vendor = PCI_VENDOR_ID_ATI,
+	.device = PCI_DEVICE_ID_ATI_SB800_PCI,
+};
diff --git a/src/southbridge/amd/sb800/pcie.c b/src/southbridge/amd/sb800/pcie.c
new file mode 100644
index 0000000000..569c0f3378
--- /dev/null
+++ b/src/southbridge/amd/sb800/pcie.c
@@ -0,0 +1,75 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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 "sb800.h"
+
+static void pcie_init(struct device *dev)
+{
+	/* Enable pci error detecting */
+	u32 dword;
+
+	printk(BIOS_INFO, "pcie_init in rs780_ht.c\n");
+
+	/* System error enable */
+	dword = pci_read_config32(dev, 0x04);
+	dword |= (1 << 8);	/* System error enable */
+	dword |= (1 << 30);	/* Clear possible errors */
+	pci_write_config32(dev, 0x04, dword);
+}
+
+static struct pci_operations lops_pci = {
+	.set_subsystem = 0,
+};
+
+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 = pcie_init,
+	.scan_bus = pci_scan_bridge,
+	.reset_bus = pci_bus_reset,
+	.ops_pci = &lops_pci,
+};
+
+static const struct pci_driver pciea_driver __pci_driver = {
+	.ops = &pci_ops,
+	.vendor = PCI_VENDOR_ID_ATI,
+	.device = PCI_DEVICE_ID_ATI_SB800_PCIEA,
+};
+
+static const struct pci_driver pcieb_driver __pci_driver = {
+	.ops = &pci_ops,
+	.vendor = PCI_VENDOR_ID_ATI,
+	.device = PCI_DEVICE_ID_ATI_SB800_PCIEB,
+};
+static const struct pci_driver pciec_driver __pci_driver = {
+	.ops = &pci_ops,
+	.vendor = PCI_VENDOR_ID_ATI,
+	.device = PCI_DEVICE_ID_ATI_SB800_PCIEC,
+};
+static const struct pci_driver pcied_driver __pci_driver = {
+	.ops = &pci_ops,
+	.vendor = PCI_VENDOR_ID_ATI,
+	.device = PCI_DEVICE_ID_ATI_SB800_PCIED,
+};
diff --git a/src/southbridge/amd/sb800/reset.c b/src/southbridge/amd/sb800/reset.c
new file mode 100644
index 0000000000..32ee66b4b5
--- /dev/null
+++ b/src/southbridge/amd/sb800/reset.c
@@ -0,0 +1,33 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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 <reset.h>
+#include <arch/io.h>
+#include <arch/romcc_io.h>
+
+#include "../../../northbridge/amd/amdk8/reset_test.c"
+
+void hard_reset(void)
+{
+	set_bios_reset();
+	/* Try rebooting through port 0xcf9 */
+	/* Actually it is not a real hard_reset --- it only reset coherent link table, but not reset link freq and width */
+	outb((0 << 3) | (0 << 2) | (1 << 1), 0xcf9);
+	outb((0 << 3) | (1 << 2) | (1 << 1), 0xcf9);
+}
diff --git a/src/southbridge/amd/sb800/sata.c b/src/southbridge/amd/sb800/sata.c
new file mode 100644
index 0000000000..db4d20f54c
--- /dev/null
+++ b/src/southbridge/amd/sb800/sata.c
@@ -0,0 +1,258 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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 <delay.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include <arch/io.h>
+#include "sb800.h"
+
+static int sata_drive_detect(int portnum, u16 iobar)
+{
+	u8 byte, byte2;
+	int i = 0;
+	outb(0xA0 + 0x10 * (portnum % 2), iobar + 0x6);
+	while (byte = inb(iobar + 0x6), byte2 = inb(iobar + 0x7),
+		(byte != (0xA0 + 0x10 * (portnum % 2))) ||
+		((byte2 & 0x88) != 0)) {
+		printk(BIOS_SPEW, "0x6=%x, 0x7=%x\n", byte, byte2);
+		if (byte != (0xA0 + 0x10 * (portnum % 2))) {
+			/* This will happen at the first iteration of this loop
+			 * if the first SATA port is unpopulated and the
+			 * second SATA port is poulated.
+			 */
+			printk(BIOS_DEBUG, "drive no longer selected after %i ms, "
+				"retrying init\n", i * 10);
+			return 1;
+		} else
+			printk(BIOS_SPEW, "drive detection not yet completed, "
+				"waiting...\n");
+		mdelay(10);
+		i++;
+	}
+	printk(BIOS_SPEW, "drive detection done after %i ms\n", i * 10);
+	return 0;
+}
+
+static void sata_init(struct device *dev)
+{
+	u8 byte;
+	u16 word;
+	u32 dword;
+	u8 rev_id;
+	u32 sata_bar5;
+	u16 sata_bar0, sata_bar1, sata_bar2, sata_bar3, sata_bar4;
+	int i, j;
+
+	struct southbridge_ati_sb800_config *conf;
+	conf = dev->chip_info;
+
+	device_t sm_dev;
+	/* SATA SMBus Disable */
+	/* sm_dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0); */
+	sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
+
+	/* get rev_id */
+	rev_id = pci_read_config8(sm_dev, 0x08) - 0x2F;
+
+	/* get base addresss */
+	sata_bar5 = pci_read_config32(dev, 0x24) & ~0x3FF;
+	sata_bar0 = pci_read_config16(dev, 0x10) & ~0x7;
+	sata_bar1 = pci_read_config16(dev, 0x14) & ~0x3;
+	sata_bar2 = pci_read_config16(dev, 0x18) & ~0x7;
+	sata_bar3 = pci_read_config16(dev, 0x1C) & ~0x3;
+	sata_bar4 = pci_read_config16(dev, 0x20) & ~0xf;
+
+	printk(BIOS_SPEW, "sata_bar0=%x\n", sata_bar0);	/* 3030 */
+	printk(BIOS_SPEW, "sata_bar1=%x\n", sata_bar1);	/* 3070 */
+	printk(BIOS_SPEW, "sata_bar2=%x\n", sata_bar2);	/* 3040 */
+	printk(BIOS_SPEW, "sata_bar3=%x\n", sata_bar3);	/* 3080 */
+	printk(BIOS_SPEW, "sata_bar4=%x\n", sata_bar4);	/* 3000 */
+	printk(BIOS_SPEW, "sata_bar5=%x\n", sata_bar5);	/* e0309000 */
+
+	/* SERR-Enable */
+	word = pci_read_config16(dev, 0x04);
+	word |= (1 << 8);
+	pci_write_config16(dev, 0x04, word);
+
+	/* Set SATA Operation Mode, Set to IDE mode */
+	byte = pci_read_config8(dev, 0x40);
+	byte |= (1 << 0);
+	//byte |= (1 << 4);
+	pci_write_config8(dev, 0x40, byte);
+
+	dword = 0x01018f00;
+	pci_write_config32(dev, 0x8, dword);
+
+	/* Program the 2C to 0x43801002 */
+	dword = 0x43801002;
+	pci_write_config32(dev, 0x2c, dword);
+
+	pci_write_config8(dev, 0x34, 0x70); /* 8.11 SATA MSI and D3 Power State Capability */
+
+	dword = read32(sata_bar5 + 0xFC);
+	dword &= ~(1 << 11);	/* rpr 8.8. Disabling Aggressive Link Power Management */
+	dword &= ~(1 << 12);	/* rpr 8.9.1 Disabling Port Multiplier support. */
+	dword &= ~(1 << 10);	/* rpr 8.9.2 disabling FIS-based Switching support */
+	dword &= ~(1 << 19);	/* rpr 8.10. Disabling CCC (Command Completion Coalescing) Support */
+	write32((sata_bar5 + 0xFC), dword);
+
+	dword = read32(sata_bar5 + 0xF8);
+	dword &= ~(0x3F << 22);	/* rpr 8.9.2 disabling FIS-based Switching support */
+	write32(sata_bar5 + 0xF8, dword);
+
+	byte = pci_read_config8(dev, 0x40);
+	byte &= ~(1 << 0);
+	pci_write_config8(dev, 0x40, byte);
+
+	/* rpr 8.3 */
+	printk(BIOS_SPEW, "rev_id=%x\n", rev_id);
+	dword = pci_read_config32(dev, 0x84);
+	if (rev_id == 0x11)	/* A11 */
+		dword |= 1 << 22;
+	pci_write_config32(dev, 0x84, dword);
+
+	/* rpr8.12 Program the watchdog counter to 0x20 */
+	byte = pci_read_config8(dev, 0x44);
+	byte |= 1 << 0;
+	pci_write_config8(dev, 0x44, byte);
+
+	pci_write_config8(dev, 0x46, 0x20);
+
+	/* RPR8.4 */
+	/* Port 0 */
+	for (i = 0; i < 6; i++) {
+		pci_write_config16(dev, 0x84, 0x3006 | i << 9);
+		pci_write_config32(dev, 0x94, 0x0056A700);
+		pci_write_config16(dev, 0x84, 0x2006 | i << 9);
+		pci_write_config32(dev, 0x94, 0x00061400);
+		pci_write_config16(dev, 0x84, 0x1006 | i << 9);
+		pci_write_config32(dev, 0x94, 0x00061302);
+	}
+
+	/* Enable the I/O, MM, BusMaster access for SATA */
+	byte = pci_read_config8(dev, 0x4);
+	byte |= 7 << 0;
+	pci_write_config8(dev, 0x4, byte);
+
+	/* RPR7.7 SATA drive detection. */
+	/* Use BAR5+0x128,BAR0 for Primary Slave */
+	/* Use BAR5+0x1A8,BAR0 for Primary Slave */
+	/* Use BAR5+0x228,BAR2 for Secondary Master */
+	/* Use BAR5+0x2A8,BAR2 for Secondary Slave */
+	/* Use BAR5+0x328,PATA_BAR0/2 for Primary/Secondary master emulation */
+	/* Use BAR5+0x3A8,PATA_BAR0/2 for Primary/Secondary Slave emulation */
+
+	/* TODO: port 4,5, which are PATA emulations. What are PATA_BARs? */
+
+	for (i = 0; i < 4; i++) {
+		byte = read8(sata_bar5 + 0x128 + 0x80 * i);
+		printk(BIOS_SPEW, "SATA port %i status = %x\n", i, byte);
+		byte &= 0xF;
+		if( byte == 0x1 ) {
+			/* If the drive status is 0x1 then we see it but we aren't talking to it. */
+			/* Try to do something about it. */
+			printk(BIOS_SPEW, "SATA device detected but not talking. Trying lower speed.\n");
+
+			/* Read in Port-N Serial ATA Control Register */
+			byte = read8(sata_bar5 + 0x12C + 0x80 * i);
+
+			/* Set Reset Bit and 1.5g bit */
+			byte |= 0x11;
+			write8((sata_bar5 + 0x12C + 0x80 * i), byte);
+
+			/* Wait 1ms */
+			mdelay(1);
+
+			/* Clear Reset Bit */
+			byte &= ~0x01;
+			write8((sata_bar5 + 0x12C + 0x80 * i), byte);
+
+			/* Wait 1ms */
+			mdelay(1);
+
+			/* Reread status */
+			byte = read8(sata_bar5 + 0x128 + 0x80 * i);
+			printk(BIOS_SPEW, "SATA port %i status = %x\n", i, byte);
+			byte &= 0xF;
+		}
+
+		if (byte == 0x3) {
+			for (j = 0; j < 10; j++) {
+				if (!sata_drive_detect(i, ((i / 2) == 0) ? sata_bar0 : sata_bar2))
+					break;
+			}
+			printk(BIOS_DEBUG, "%s %s device is %sready after %i tries\n",
+					(i / 2) ? "Secondary" : "Primary",
+					(i % 2 ) ? "Slave" : "Master",
+					(j == 10) ? "not " : "",
+					(j == 10) ? j : j + 1);
+		} else {
+			printk(BIOS_DEBUG, "No %s %s SATA drive on Slot%i\n",
+					(i / 2) ? "Secondary" : "Primary",
+					(i % 2 ) ? "Slave" : "Master", i);
+		}
+	}
+
+	/* Below is CIM InitSataLateFar */
+	/* Enable interrupts from the HBA  */
+	byte = read8(sata_bar5 + 0x4);
+	byte |= 1 << 1;
+	write8((sata_bar5 + 0x4), byte);
+
+	/* Clear error status */
+	write32((sata_bar5 + 0x130), 0xFFFFFFFF);
+	write32((sata_bar5 + 0x1b0), 0xFFFFFFFF);
+	write32((sata_bar5 + 0x230), 0xFFFFFFFF);
+	write32((sata_bar5 + 0x2b0), 0xFFFFFFFF);
+	write32((sata_bar5 + 0x330), 0xFFFFFFFF);
+	write32((sata_bar5 + 0x3b0), 0xFFFFFFFF);
+
+	/* Clear SATA status,Firstly we get the AcpiGpe0BlkAddr */
+	/* ????? why CIM does not set the AcpiGpe0BlkAddr , but use it??? */
+
+	/* word = 0x0000; */
+	/* word = pm_ioread(0x28); */
+	/* byte = pm_ioread(0x29); */
+	/* word |= byte<<8; */
+	/* printk(BIOS_DEBUG, "AcpiGpe0Blk addr = %x\n", word); */
+	/* write32(word, 0x80000000); */
+}
+
+static struct pci_operations lops_pci = {
+	/* .set_subsystem = pci_dev_set_subsystem, */
+};
+
+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,
+	.ops_pci = &lops_pci,
+};
+
+static const struct pci_driver sata0_driver __pci_driver = {
+	.ops = &sata_ops,
+	.vendor = PCI_VENDOR_ID_ATI,
+	.device = PCI_DEVICE_ID_ATI_SB800_SATA,
+};
diff --git a/src/southbridge/amd/sb800/sb800.c b/src/southbridge/amd/sb800/sb800.c
new file mode 100644
index 0000000000..f6b7d80f3b
--- /dev/null
+++ b/src/southbridge/amd/sb800/sb800.c
@@ -0,0 +1,393 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include "sb800.h"
+#include "smbus.h"
+
+static device_t find_sm_dev(device_t dev, u32 devfn)
+{
+	device_t sm_dev;
+
+	sm_dev = dev_find_slot(dev->bus->secondary, devfn);
+	if (!sm_dev)
+		return sm_dev;
+
+	if ((sm_dev->vendor != PCI_VENDOR_ID_ATI) ||
+	    ((sm_dev->device != PCI_DEVICE_ID_ATI_SB800_SM))) {
+		u32 id;
+		id = pci_read_config32(sm_dev, PCI_VENDOR_ID);
+		if ((id !=
+		     (PCI_VENDOR_ID_ATI | (PCI_DEVICE_ID_ATI_SB800_SM << 16))))
+		{
+			sm_dev = 0;
+		}
+	}
+
+	return sm_dev;
+}
+
+void set_sm_enable_bits(device_t sm_dev, u32 reg_pos, u32 mask, u32 val)
+{
+	u32 reg_old, reg;
+	reg = reg_old = pci_read_config32(sm_dev, reg_pos);
+	reg &= ~mask;
+	reg |= val;
+	if (reg != reg_old) {
+		pci_write_config32(sm_dev, reg_pos, reg);
+	}
+}
+
+static void pmio_write_index(u16 port_base, u8 reg, u8 value)
+{
+	outb(reg, port_base);
+	outb(value, port_base + 1);
+}
+
+static u8 pmio_read_index(u16 port_base, u8 reg)
+{
+	outb(reg, port_base);
+	return inb(port_base + 1);
+}
+
+void pm_iowrite(u8 reg, u8 value)
+{
+	pmio_write_index(PM_INDEX, reg, value);
+}
+
+u8 pm_ioread(u8 reg)
+{
+	return pmio_read_index(PM_INDEX, reg);
+}
+
+void pm2_iowrite(u8 reg, u8 value)
+{
+	pmio_write_index(PM2_INDEX, reg, value);
+}
+
+u8 pm2_ioread(u8 reg)
+{
+	return pmio_read_index(PM2_INDEX, reg);
+}
+
+static void set_pmio_enable_bits(u32 reg_pos, u32 mask, u32 val)
+{
+	u8 reg_old, reg;
+	reg = reg_old = pm_ioread(reg_pos);
+	reg &= ~mask;
+	reg |= val;
+	if (reg != reg_old) {
+		pm_iowrite(reg_pos, reg);
+	}
+}
+
+u16 tx_convert_table[] = {
+	[0x0] = 0xFFFF,
+	[0x1] = 0xFFFE,
+	[0x2] = 0xFFFC,
+	[0x3] = 0xFFF8,
+	[0x4] = 0xFFF0,
+	[0x5] = 0xFFE0,
+	[0x6] = 0xFFC0,
+	[0x7] = 0xFF80,
+	[0x8] = 0xFF00,
+	[0x9] = 0xFE00,
+	[0xA] = 0xFC00,
+	[0xB] = 0xF800,
+	[0xC] = 0xF000,
+	[0xD] = 0xE000,
+	[0xE] = 0xC000,
+	[0xF] = 0x8000
+};
+
+u16 rx_convert_table[] = {
+	[0x0] = 0x0001,
+	[0x1] = 0x0003,
+	[0x2] = 0x0007,
+	[0x3] = 0x000F,
+	[0x4] = 0x001F,
+	[0x5] = 0x003F,
+	[0x6] = 0x007F,
+	[0x7] = 0x00FF,
+	[0x8] = 0x01FF,
+	[0x9] = 0x03FF,
+	[0xA] = 0x07FF,
+	[0xB] = 0x0FFF,
+	[0xC] = 0x1FFF,
+	[0xD] = 0x3FFF,
+	[0xE] = 0x7FFF,
+	[0xF] = 0xFFFF
+};
+
+/* PCIe General Purpose Ports */
+/* v:1814, d:3090. cp421A */
+static void set_sb800_gpp(device_t dev)
+{
+	struct southbridge_amd_sb800_config *conf;
+	u32 imp_rb, lc_status;
+	u8 port;
+
+	conf = dev->chip_info;
+	port = dev->path.pci.devfn & 3;
+
+	/* 5.1 GPP Lane Configuration */
+	/* To support one of 4 legal configurations:
+	 * 0000: PortA lanes[3:0]
+	 * 0001: N/A
+	 * 0010: PortA lanes[1:0], PortB lanes[3:2]
+	 * 0011: PortA lanes[1:0], PortB lane2, PortC lane3
+	 * 0100: PortA lane0, PortB lane1, PortC lane2, PortD lane3.
+	 * Other combinations are not supported.
+	 */
+	/* CIMx: Set abcfg:0x90[20] = 1 to enable GPP bridge multi-function */
+	abcfg_reg(0x90, 1 << 20, 1 << 20);
+
+	printk(BIOS_DEBUG, "set_sb800_gpp() 1\n");
+	//abcfg_reg(0xC0, 0xF << 0, 0x4 << 0); /* bimini:4; tarpon:3 */
+	abcfg_reg(0xC0, 0xF << 0, (conf->gpp_configuration & 0xF) << 0); /* bimini:4; tarpon:3 */
+
+	printk(BIOS_DEBUG, "set_sb800_gpp() 2,\n");
+	/* 5.2 Enabling GPP Port A/B/C/D */
+	//abcfg_reg(0xC0, 0xF << 4, 0x1 << 4);
+	abcfg_reg(0xC0, 0xF << 4, dev->enabled ? 0x1 << (4 + port) : 0);
+
+	printk(BIOS_DEBUG, "set_sb800_gpp() 3\n");
+	/* 5.3 Releasing GPP Reset */
+	abcfg_reg(0xC0, 0x1 << 8, 0x0 << 8);
+
+	/* release training */
+	abcfg_reg(0xC0, 0xF << 12, 0x0 << 12);
+	/* 5.4 Power Saving Feature for GPP Lanes. Skip */
+	/* 5.5 PCIe Ports De-emphasis Settings. Skip */
+	abcfg_reg(0x340, 1 << 21, 0 << 21);
+	abcfg_reg(0x344, 1 << 21, 0 << 21);
+	abcfg_reg(0x348, 1 << 21, 0 << 21);
+	abcfg_reg(0x34C, 1 << 21, 0 << 21);
+	/* 5.6 PCIe PHY Calibration Impedance Value Setting */
+	/* AXINDC_Reg 0x60: TX_IMP_RB */
+	outl(0x30, 0xCD8);
+	outl(0x60, 0xCDC);
+	outl(0x34, 0xCD8);
+	imp_rb = inl(0xCDC);
+
+	printk(BIOS_DEBUG, "imp_rb 1=%x\n", imp_rb);
+	/* tx */
+	abcfg_reg(0xA4, 0x1FFF, (rx_convert_table[(imp_rb>>8)&0xF]) & 0x1FFF);
+	abcfg_reg(0xA4, 0x1FFF<<19, ((tx_convert_table[(imp_rb>>4)&0xF] >> 3) & 0x1FFF) << 19);
+
+	/* 5.4. */
+	abcfg_reg(0xA0, 3 << 12, 3 << 12);
+
+	axindxp_reg(0xa0, 0xf<<4, 3<<4);
+	rcindxp_reg(0xA0, 0, 0xF << 4, 1 << 0);
+	rcindxp_reg(0xA0, 1, 0xF << 4, 1 << 0);
+	rcindxp_reg(0xA0, 2, 0xF << 4, 1 << 0);
+	rcindxp_reg(0xA0, 3, 0xF << 4, 1 << 0);
+
+	/* 5.8 Disabling Serial Number Capability */
+	abcfg_reg(0x330, 1 << 26, 0 << 26);
+
+	abcfg_reg(0x50, 0xFFFFFFFF, 0x04000004);
+	abcfg_reg(0x54, 0xFFFFFFFF, 0x00040000);
+	abcfg_reg(0x80, 0xFFFFFFFF, 0x03060001);
+	abcfg_reg(0x90, 0xFFFFFFFF, 0x00300000);
+	abcfg_reg(0x98, 0xFFFFFFFF, 0x03034700);
+
+	pci_write_config32(dev, 0x80, 0x00000006);
+	/* Set PCIEIND_P:PCIE_RX_CNTL[RX_RCB_CPL_TIMEOUT_MODE] (0x70:[19]) = 1 */
+	rcindxp_reg(0x70, 0, 1 << 19, 1 << 19);
+	//outl(3<<29|0<<24|0x70, 0xCD8);
+	/* Set PCIEIND_P:PCIE_TX_CNTL[TX_FLUSH_TLP_DIS] (0x20:[19]) = 0 */
+	rcindxp_reg(0x20, 0, 1 << 19, 0 << 19);
+	printk(BIOS_DEBUG, "imp_rb 5=%x\n", imp_rb);
+	outl(3<<29|0<<24|0xA5, 0xCD8);
+	lc_status = inl(0xCDC);
+	printk(BIOS_DEBUG, "lc_status=%x\n", lc_status);
+}
+
+void sb800_enable(device_t dev)
+{
+	device_t sm_dev = 0;
+	device_t bus_dev = 0;
+	int index = -1;
+	u32 deviceid;
+	u32 vendorid;
+
+	/* struct southbridge_ati_sb800_config *conf; */
+	/* conf = dev->chip_info; */
+	int i;
+
+	u32 devfn, dword;
+
+	printk(BIOS_DEBUG, "sb800_enable()\n");
+
+	/*
+	 *	0:11.0  SATA		bit 8 of pmio 0xDA : 1 - enable
+	 *	0:12.0  OHCI-USB1	bit 0 of pmio 0xEF
+	 *	0:12.2  EHCI-USB1	bit 1 of pmio 0xEF
+	 *	0:13.0  OHCI-USB2	bit 2 of pmio 0xEF
+	 *	0:13.2  EHCI-USB2	bit 3 of pmio 0xEF
+	 *	0:16.1  OHCI-USB3	bit 4 of pmio 0xEF
+	 *	0:16.2  EHCI-USB3	bit 5 of pmio 0xEF
+	 *	0:14.5  OHCI-USB4	bit 6 of pmio 0xEF
+	 *	0:14.0  SMBUS							0
+	 *	0:14.1  IDE							1
+	 *	0:14.2  HDA	bit 0 of pm_io 0xEB : 1 - enable
+	 *	0:14.3  LPC	bit 0 of pm_io 0xEC : 1 - enable
+	 *	0:14.4  PCI	bit 0 of pm_io 0xEA : 0 - enable
+	 *	0:14.6  GEC	bit 0 of pm_io 0xF6 : 0 - enable
+	 */
+	if (dev->device == 0x0000) {
+		vendorid = pci_read_config32(dev, PCI_VENDOR_ID);
+		deviceid = (vendorid >> 16) & 0xffff;
+		vendorid &= 0xffff;
+	} else {
+		vendorid = dev->vendor;
+		deviceid = dev->device;
+	}
+	bus_dev = dev->bus->dev;
+	if ((bus_dev->vendor == PCI_VENDOR_ID_ATI) &&
+	    (bus_dev->device == PCI_DEVICE_ID_ATI_SB800_PCI)) {
+		devfn = (bus_dev->path.pci.devfn) & ~7;
+		sm_dev = find_sm_dev(bus_dev, devfn);
+		if (!sm_dev)
+			return;
+
+		/* something under 00:01.0 */
+		switch (dev->path.pci.devfn) {
+		case 5 << 3:
+			;
+		}
+
+		return;
+	}
+	printk(BIOS_DEBUG, "sb800_enable() 1\n");
+
+	i = (dev->path.pci.devfn) & ~7;
+	i += (3 << 3);
+	for (devfn = (0x14 << 3); devfn <= i; devfn += (1 << 3)) {
+		sm_dev = find_sm_dev(dev, devfn);
+		if (sm_dev)
+			break;
+	}
+	if (!sm_dev)
+		return;
+	printk(BIOS_DEBUG, "sb800_enable() 2\n");
+
+	switch (dev->path.pci.devfn - (devfn - (0x14 << 3))) {
+	case (0x11 << 3) | 0:
+		index = 8;
+		set_pmio_enable_bits(0xDA, 1 << 0,
+				     (dev->enabled ? 1 : 0) << 0);
+		/* Set the device ID of SATA as 0x4390 to reduce the confusing. */
+		dword = pci_read_config32(dev, 0x40);
+		dword |= 1 << 0;
+		pci_write_config32(dev, 0x40, dword);
+		pci_write_config16(dev, 0x2, 0x4390);
+		dword &= ~1;
+		pci_write_config32(dev, 0x40, dword);//for (;;);
+		index += 32 * 3;
+		break;
+	case (0x12 << 3) | 0:
+	case (0x12 << 3) | 2:
+		index = (dev->path.pci.devfn & 0x3) / 2;
+		set_pmio_enable_bits(0xEF, 1 << index,
+				     (dev->enabled ? 1 : 0) << index);
+		break;
+	case (0x13 << 3) | 0:
+	case (0x13 << 3) | 2:
+		index = (dev->path.pci.devfn & 0x3) / 2 + 2;
+		set_pmio_enable_bits(0xEF, 1 << index,
+				     (dev->enabled ? 1 : 0) << index);
+		index += 32 * 2;
+		break;
+	case (0x14 << 3) | 0:
+		index = 0;
+		break;
+	case (0x14 << 3) | 1:
+		index = 1;
+		set_pmio_enable_bits(0xDA, 1 << 3,
+				     (dev->enabled ? 0 : 1) << 3);
+		break;
+	case (0x14 << 3) | 2:
+		index = 0;
+		set_pmio_enable_bits(0xEB, 1 << index,
+				     (dev->enabled ? 1 : 0) << index);
+		break;
+	case (0x14 << 3) | 3:
+		index = 0;
+		set_pmio_enable_bits(0xEC, 1 << index,
+				     (dev->enabled ? 1 : 0) << index);
+		index += 32 * 1;
+		break;
+	case (0x14 << 3) | 4:
+		index = 0;
+		set_pmio_enable_bits(0xEA, 1 << index,
+				     (dev->enabled ? 0 : 1) << index);
+		break;
+	case (0x14 << 3) | 5:
+		index = 6;
+		set_pmio_enable_bits(0xEF, 1 << index,
+				     (dev->enabled ? 1 : 0) << index);
+		break;
+	case (0x14 << 3) | 6:
+		/* From linux-2.6.32 to 2.6.34, the broadcom has problems
+		 * about the sequence of installing drivers. The solution is
+		 * modifying the file "/etc/rc.local", or just running:
+		 *
+		 * touch /var/lock/subsys/local
+		 * modprobe -r tg3
+		 * modprobe broadcom
+		 * modprobe tg3
+		 */
+		index = 0;
+		set_pmio_enable_bits(0xF6, 1 << index,
+				     (dev->enabled ? 0 : 1) << index);
+		break;
+	case (0x15 << 3) | 0:
+		set_sb800_gpp(dev);
+		index = 4;
+		break;
+	case (0x15 << 3) | 1:
+	case (0x15 << 3) | 2:
+	case (0x15 << 3) | 3:
+		break;
+	case (0x16 << 3) | 0:
+	case (0x16 << 3) | 2:
+		index = (dev->path.pci.devfn & 0x3) / 2 + 4;
+		set_pmio_enable_bits(0xEF, 1 << index,
+				     (dev->enabled ? 1 : 0) << index);
+		break;
+	default:
+		printk(BIOS_DEBUG, "unknown dev: %s deviceid=%4x\n", dev_path(dev),
+			     deviceid);
+	}
+}
+
+struct chip_operations southbridge_amd_sb800_ops = {
+	CHIP_NAME("ATI SB800")
+	.enable_dev = sb800_enable,
+};
diff --git a/src/southbridge/amd/sb800/sb800.h b/src/southbridge/amd/sb800/sb800.h
new file mode 100644
index 0000000000..80578c1232
--- /dev/null
+++ b/src/southbridge/amd/sb800/sb800.h
@@ -0,0 +1,60 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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 SB800_H
+#define SB800_H
+
+#include <device/pci_ids.h>
+#include "chip.h"
+
+/* Power management index/data registers */
+#define PM_INDEX	0xcd6
+#define PM_DATA		0xcd7
+#define PM2_INDEX	0xcd0
+#define PM2_DATA	0xcd1
+
+#define SB800_ACPI_IO_BASE 0x800
+
+#define ACPI_PM_EVT_BLK		(SB800_ACPI_IO_BASE + 0x00) /* 4 bytes */
+#define ACPI_PM1_CNT_BLK	(SB800_ACPI_IO_BASE + 0x04) /* 2 bytes */
+#define ACPI_PMA_CNT_BLK	(SB800_ACPI_IO_BASE + 0x0F) /* 1 byte */
+#define ACPI_PM_TMR_BLK		(SB800_ACPI_IO_BASE + 0x18) /* 4 bytes */
+#define ACPI_GPE0_BLK		(SB800_ACPI_IO_BASE + 0x10) /* 8 bytes */
+#define ACPI_CPU_CONTROL	(SB800_ACPI_IO_BASE + 0x08) /* 6 bytes */
+
+extern void pm_iowrite(u8 reg, u8 value);
+extern u8 pm_ioread(u8 reg);
+extern void pm2_iowrite(u8 reg, u8 value);
+extern u8 pm2_ioread(u8 reg);
+extern void set_sm_enable_bits(device_t sm_dev, u32 reg_pos, u32 mask, u32 val);
+
+#define REV_SB800_A11	0x11
+#define REV_SB800_A12	0x12
+
+/* This shouldn't be called before set_sb800_revision() is called.
+ * Once set_sb800_revision() is called, we use get_sb800_revision(),
+ * the simpler one, to get the sb800 revision ID.
+ * The id is 0x39 if A11, 0x3A if A12, 0x3C if A14, 0x3D if A15.
+ * The differentiate is 0x28, isn't it? */
+//#define get_sb800_revision(sm_dev)	(pci_read_config8((sm_dev), 0x08) - 0x28)
+
+void sb800_enable(device_t dev);
+void sb800_enable_usbdebug(unsigned int port);
+
+#endif /* SB800_H */
diff --git a/src/southbridge/amd/sb800/sm.c b/src/southbridge/amd/sb800/sm.c
new file mode 100644
index 0000000000..9347c42f32
--- /dev/null
+++ b/src/southbridge/amd/sb800/sm.c
@@ -0,0 +1,357 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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 <device/smbus.h>
+#include <pc80/mc146818rtc.h>
+#include <bitops.h>
+#include <arch/io.h>
+#include <cpu/x86/lapic.h>
+#include <arch/ioapic.h>
+#include <stdlib.h>
+#include "sb800.h"
+#include "smbus.c"
+
+#define NMI_OFF 0
+
+#define MAINBOARD_POWER_OFF 0
+#define MAINBOARD_POWER_ON 1
+
+#ifndef CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL
+#define CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL MAINBOARD_POWER_ON
+#endif
+
+#define BIT0	(1 << 0)
+#define BIT1	(1 << 1)
+#define BIT2	(1 << 2)
+#define BIT3	(1 << 3)
+#define BIT4	(1 << 4)
+#define BIT5	(1 << 5)
+#define BIT6	(1 << 6)
+#define BIT7	(1 << 7)
+
+#define BIT8	(1 << 8 )
+#define BIT9	(1 << 9 )
+#define BIT10	(1 << 10)
+#define BIT11	(1 << 11)
+#define BIT12	(1 << 12)
+#define BIT13	(1 << 13)
+#define BIT14	(1 << 14)
+#define BIT15	(1 << 15)
+
+#define BIT16	(1 << 16)
+#define BIT17	(1 << 17)
+#define BIT18	(1 << 18)
+#define BIT19	(1 << 19)
+#define BIT20	(1 << 20)
+#define BIT21	(1 << 21)
+#define BIT22	(1 << 22)
+#define BIT23	(1 << 23)
+#define BIT24	(1 << 24)
+#define BIT25	(1 << 25)
+#define BIT26	(1 << 26)
+#define BIT27	(1 << 27)
+#define BIT28	(1 << 28)
+#define BIT29	(1 << 29)
+#define BIT30	(1 << 30)
+#define BIT31	(1 << 31)
+
+/*
+* SB800 enables all USB controllers by default in SMBUS Control.
+* SB800 enables SATA by default in SMBUS Control.
+*/
+
+static void sm_init(device_t dev)
+{
+	u8 byte;
+	u32 ioapic_base;
+
+	printk(BIOS_INFO, "sm_init().\n");
+
+	ioapic_base = 0xFEC00000;//pci_read_config32(dev, 0x74) & (0xffffffe0);	/* some like mem resource, but does not have  enable bit */
+	/* Don't rename APIC ID */
+	/* TODO: We should call setup_ioapic() here. But kernel hangs if cpu is K8.
+	 * We need to check out why and change back. */
+	clear_ioapic(ioapic_base);
+	//setup_ioapic(ioapic_base, 0);
+
+	/* enable serial irq */
+	byte = pm_ioread(0x54);
+	byte |= 1 << 7;		/* enable serial irq function */
+	byte &= ~(0xF << 2);
+	byte |= 4 << 2;		/* set NumSerIrqBits=4 */
+	pm_iowrite(0x54, byte);
+
+	pm_iowrite(0x00, 0x0E);
+	pm_iowrite(0x0B, 0x02);
+	/* 2.11 IO Trap Settings */
+	abcfg_reg(0x10090, 1 << 16, 1 << 16);
+
+	/* 4.1 ab index */
+	//pci_write_config32(dev, 0xF0, AB_INDX);
+	pm_iowrite(0xE0, AB_INDX & 0xFF);
+	pm_iowrite(0xE1, (AB_INDX >> 8) & 0xFF);
+	pm_iowrite(0xE2, (AB_INDX >> 16) & 0xFF);
+	pm_iowrite(0xE3, (AB_INDX >> 24) & 0xFF);
+	/* Initialize the real time clock */
+	rtc_init(0);
+
+	byte = pm_ioread(0x8);
+	byte |= 1 << 2 | 1 << 4;
+	pm_iowrite(0x08, byte);
+	byte = pm_ioread(0x9);
+	byte |= 1 << 0;
+	pm_iowrite(0x09, byte);
+
+	abcfg_reg(0x10060, (BIT31), BIT31);
+	abcfg_reg(0x1009C, (BIT4 + BIT5), BIT4 + BIT5);
+	abcfg_reg(0x9C,    (BIT2 + BIT3 + BIT4 + BIT5 + BIT6 + BIT7), BIT2 + BIT3 + BIT4 + BIT5 + BIT6 + BIT7);
+	abcfg_reg(0x90,    (BIT21 + BIT22 + BIT23), BIT21 + BIT22 + BIT23);
+	abcfg_reg(0xF0,    (BIT6 + BIT5), BIT6 + BIT5);
+	abcfg_reg(0x10090, (BIT9 + BIT10 + BIT11 + BIT12), BIT9 + BIT10 + BIT11 + BIT12);
+	abcfg_reg(0x58,    (BIT10), BIT10);
+	abcfg_reg(0xF0,    (BIT3 + BIT4), BIT3 + BIT4);
+	abcfg_reg(0x54,    (BIT1), BIT1);
+	//
+	axindxc_reg(0x02, BIT9, BIT9);
+	axindxc_reg(0x10, BIT9, BIT9);
+
+	/* 4.2 Enabling Upstream DMA Access */
+	axcfg_reg(0x04, 1 << 2, 1 << 2);
+	/* 4.3 Enabling PCIB Prefetch Settings */
+	abcfg_reg(0x10060, 1 << 20, 1 << 20);
+	abcfg_reg(0x10064, 1 << 20, 1 << 20);
+
+	/* 4.4 Enabling OHCI Prefetch for Performance Enhancement, A12 */
+	abcfg_reg(0x80, 1 << 0, 1<< 0);
+
+	/* 4.5 B-Link Client's Credit Variable Settings for the Downstream Arbitration Equation */
+	/* 4.6 Enabling Additional Address Bits Checking in Downstream */
+	abcfg_reg(0x9c, 1 << 0, 1 << 0);
+	//abcfg_reg(0x9c, 3 << 0, 3 << 0); //A11
+
+	/* 4.7 Set B-Link Prefetch Mode */
+	abcfg_reg(0x80, 3 << 17, 3 << 17);
+
+	// RPR Enabled SMI ordering enhancement. ABCFG 0x90[21]
+	// RPR USB Delay A-Link Express L1 State. ABCFG 0x90[17]
+	abcfg_reg(0x90, 1 << 17 | 1 << 21, 1 << 17 | 1 << 21);
+	/* 4.8 Enabling Detection of Upstream Interrupts */
+	abcfg_reg(0x94, 1 << 20 | 0x7FFFF, 1 << 20 | 0x00FEE);
+
+	/* 4.9: Enabling Downstream Posted Transactions to Pass Non-Posted
+	 *  Transactions for the K8 Platform (for All Revisions) */
+	abcfg_reg(0x10090, 1 << 8, 1 << 8);
+
+	/* 4.10:Programming Cycle Delay for AB and BIF Clock Gating */
+	/* 4.11:Enabling AB Int_Arbiter Enhancement (for All Revisions) */
+	abcfg_reg(0x10054, 0xFFFF0000, 0x01040000);
+	abcfg_reg(0x54, 0xFF << 16, 4 << 16);
+	abcfg_reg(0x54, 1 << 24, 0 << 24);
+	abcfg_reg(0x54, 1 << 26, 1 << 26);
+	abcfg_reg(0x98, 0xFFFFFF00, 0x00004700);
+
+	/* 4.12: Enabling AB and BIF Clock Gating */
+	abcfg_reg(0x10054, 0x0000FFFF, 0x07FF);
+
+	/* 4.13:Enabling Requester ID for upstream traffic. */
+	abcfg_reg(0x98, 3 << 16, 3 << 16);
+
+	abcfg_reg(0x50, 1 << 2, 0 << 2);
+
+	/* 5.2 Enabling GPP Port A/B/C/D */
+	//abcfg_reg(0xC0, 0xF << 4, 0xF << 4);
+
+	/* Enable SCI as irq9. */
+	outb(0x10, 0xC00);
+	outb(0x9, 0xC01);
+	/* Enabled IRQ input */
+	outb(0x9, 0xC00);
+	outb(0xF7, 0xC01);
+
+	abcfg_reg(0x90, 0xFFFFFFFF, 0x00F80040);
+	abcfg_reg(0xA0, 0xFFFFFFFF, 0x00000000);
+	abcfg_reg(0xA4, 0xFFFFFFFF, 0x00000000);
+	abcfg_reg(0xC0, 0xFFFFFFFF, 0x0000F014);
+	abcfg_reg(0x98, 0xFFFFFFFF, 0X01034700);
+}
+
+static int lsmbus_recv_byte(device_t dev)
+{
+	u32 device;
+	struct resource *res;
+	struct bus *pbus;
+
+	device = dev->path.i2c.device;
+	pbus = get_pbus_smbus(dev);
+
+	res = find_resource(pbus->dev, 0x90);
+
+	return do_smbus_recv_byte(res->base, device);
+}
+
+static int lsmbus_send_byte(device_t dev, u8 val)
+{
+	u32 device;
+	struct resource *res;
+	struct bus *pbus;
+
+	device = dev->path.i2c.device;
+	pbus = get_pbus_smbus(dev);
+
+	res = find_resource(pbus->dev, 0x90);
+
+	return do_smbus_send_byte(res->base, device, val);
+}
+
+static int lsmbus_read_byte(device_t dev, u8 address)
+{
+	u32 device;
+	struct resource *res;
+	struct bus *pbus;
+
+	device = dev->path.i2c.device;
+	pbus = get_pbus_smbus(dev);
+
+	res = find_resource(pbus->dev, 0x90);
+
+	return do_smbus_read_byte(res->base, device, address);
+}
+
+static int lsmbus_write_byte(device_t dev, u8 address, u8 val)
+{
+	u32 device;
+	struct resource *res;
+	struct bus *pbus;
+
+	device = dev->path.i2c.device;
+	pbus = get_pbus_smbus(dev);
+
+	res = find_resource(pbus->dev, 0x90);
+
+	return do_smbus_write_byte(res->base, device, address, val);
+}
+static struct smbus_bus_operations lops_smbus_bus = {
+	.recv_byte = lsmbus_recv_byte,
+	.send_byte = lsmbus_send_byte,
+	.read_byte = lsmbus_read_byte,
+	.write_byte = lsmbus_write_byte,
+};
+
+static void sb800_sm_read_resources(device_t dev)
+{
+	struct resource *res;
+	u8 byte;
+
+	/* rpr2.14: Hides SM bus controller Bar1 where stores HPET MMIO base address */
+	byte = pm_ioread(0x55);
+	byte |= 1 << 7;
+	pm_iowrite(0x55, byte);
+
+	/* Get the normal pci resources of this device */
+	/* pci_dev_read_resources(dev); */
+
+	byte = pm_ioread(0x55);
+	byte &= ~(1 << 7);
+	pm_iowrite(0x55, byte);
+
+	/* apic */
+	res = new_resource(dev, 0x74);
+	res->base  = 0xfec00000;
+	res->size = 256 * 0x10;
+	res->limit = 0xFEFFFFFUL;	/* res->base + res->size -1; */
+	res->align = 8;
+	res->gran = 8;
+	res->flags = IORESOURCE_MEM | IORESOURCE_FIXED;
+
+	#if 0			       /* Linux ACPI crashes when it is 1. For late debugging. */
+	res = new_resource(dev, 0x14); /* TODO: hpet */
+	res->base  = 0xfed00000;	/* reset hpet to widely accepted address */
+	res->size = 0x400;
+	res->limit = 0xFFFFFFFFUL;	/* res->base + res->size -1; */
+	res->align = 8;
+	res->gran = 8;
+	res->flags = IORESOURCE_MEM | IORESOURCE_FIXED;
+	#endif
+	/* dev->command |= PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER; */
+
+	/* smbus */
+	//res = new_resource(dev, 0x90);
+	//res->base  = 0xB00;
+	//res->size = 0x10;
+	//res->limit = 0xFFFFUL;	/* res->base + res->size -1; */
+	//res->align = 8;
+	//res->gran = 8;
+	//res->flags = IORESOURCE_IO | IORESOURCE_FIXED;
+
+
+	compact_resources(dev);
+}
+
+static void sb800_sm_set_resources(struct device *dev)
+{
+	struct resource *res;
+	u8 byte;
+
+	pci_dev_set_resources(dev);
+
+
+	/* rpr2.14: Make HPET MMIO decoding controlled by the memory enable bit in command register of LPC ISA bridage */
+	byte = pm_ioread(0x52);
+	byte |= 1 << 6;
+	pm_iowrite(0x52, byte);
+
+	res = find_resource(dev, 0x74);
+
+	printk(BIOS_INFO, "sb800_sm_set_resources, res->base=0x%llx\n", res->base);
+
+	//pci_write_config32(dev, 0x74, res->base | 1 << 3);
+	pm_iowrite(0x34, res->base | 0x7);
+	pm_iowrite(0x35, (res->base >> 8) & 0xFF);
+	pm_iowrite(0x36, (res->base >> 16) & 0xFF);
+	pm_iowrite(0x37, (res->base >> 24) & 0xFF);
+#if 0				/* TODO:hpet */
+	res = find_resource(dev, 0x14);
+	pci_write_config32(dev, 0x14, res->base);
+#endif
+	//res = find_resource(dev, 0x90);
+	//pci_write_config32(dev, 0x90, res->base | 1);
+}
+
+static struct pci_operations lops_pci = {
+	.set_subsystem = pci_dev_set_subsystem,
+};
+static struct device_operations smbus_ops = {
+	.read_resources = sb800_sm_read_resources,
+	.set_resources = sb800_sm_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init = sm_init,
+	.scan_bus = scan_static_bus,
+	.ops_pci = &lops_pci,
+	.ops_smbus_bus = &lops_smbus_bus,
+};
+static const struct pci_driver smbus_driver __pci_driver = {
+	.ops = &smbus_ops,
+	.vendor = PCI_VENDOR_ID_ATI,
+	.device = PCI_DEVICE_ID_ATI_SB800_SM,
+};
diff --git a/src/southbridge/amd/sb800/smbus.c b/src/southbridge/amd/sb800/smbus.c
new file mode 100644
index 0000000000..9db936c31f
--- /dev/null
+++ b/src/southbridge/amd/sb800/smbus.c
@@ -0,0 +1,253 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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  _SB800_SMBUS_C_
+#define  _SB800_SMBUS_C_
+
+#include "smbus.h"
+
+static inline void smbus_delay(void)
+{
+	outb(inb(0x80), 0x80);
+}
+
+static int smbus_wait_until_ready(u32 smbus_io_base)
+{
+	u32 loops;
+	loops = SMBUS_TIMEOUT;
+	do {
+		u8 val;
+		val = inb(smbus_io_base + SMBHSTSTAT);
+		val &= 0x1f;
+		if (val == 0) {	/* ready now */
+			return 0;
+		}
+		outb(val, smbus_io_base + SMBHSTSTAT);
+	} while (--loops);
+	return -2;		/* time out */
+}
+
+static int smbus_wait_until_done(u32 smbus_io_base)
+{
+	u32 loops;
+	loops = SMBUS_TIMEOUT;
+	do {
+		u8 val;
+
+		val = inb(smbus_io_base + SMBHSTSTAT);
+		val &= 0x1f;	/* mask off reserved bits */
+		if (val & 0x1c) {
+			return -5;	/* error */
+		}
+		if (val == 0x02) {
+			outb(val, smbus_io_base + SMBHSTSTAT);	/* clear status */
+			return 0;
+		}
+	} while (--loops);
+	return -3;		/* timeout */
+}
+
+int do_smbus_recv_byte(u32 smbus_io_base, u32 device)
+{
+	u8 byte;
+
+	if (smbus_wait_until_ready(smbus_io_base) < 0) {
+		return -2;	/* not ready */
+	}
+
+	/* set the device I'm talking too */
+	outb(((device & 0x7f) << 1) | 1, smbus_io_base + SMBHSTADDR);
+
+	byte = inb(smbus_io_base + SMBHSTCTRL);
+	byte &= 0xe3;		/* Clear [4:2] */
+	byte |= (1 << 2) | (1 << 6);	/* Byte data read/write command, start the command */
+	outb(byte, smbus_io_base + SMBHSTCTRL);
+
+	/* poll for transaction completion */
+	if (smbus_wait_until_done(smbus_io_base) < 0) {
+		return -3;	/* timeout or error */
+	}
+
+	/* read results of transaction */
+	byte = inb(smbus_io_base + SMBHSTCMD);
+
+	return byte;
+}
+
+int do_smbus_send_byte(u32 smbus_io_base, u32 device, u8 val)
+{
+	u8 byte;
+
+	if (smbus_wait_until_ready(smbus_io_base) < 0) {
+		return -2;	/* not ready */
+	}
+
+	/* set the command... */
+	outb(val, smbus_io_base + SMBHSTCMD);
+
+	/* set the device I'm talking too */
+	outb(((device & 0x7f) << 1) | 0, smbus_io_base + SMBHSTADDR);
+
+	byte = inb(smbus_io_base + SMBHSTCTRL);
+	byte &= 0xe3;		/* Clear [4:2] */
+	byte |= (1 << 2) | (1 << 6);	/* Byte data read/write command, start the command */
+	outb(byte, smbus_io_base + SMBHSTCTRL);
+
+	/* poll for transaction completion */
+	if (smbus_wait_until_done(smbus_io_base) < 0) {
+		return -3;	/* timeout or error */
+	}
+
+	return 0;
+}
+
+int do_smbus_read_byte(u32 smbus_io_base, u32 device,
+			      u32 address)
+{
+	u8 byte;
+
+	if (smbus_wait_until_ready(smbus_io_base) < 0) {
+		return -2;	/* not ready */
+	}
+
+	/* set the command/address... */
+	outb(address & 0xff, smbus_io_base + SMBHSTCMD);
+
+	/* set the device I'm talking too */
+	outb(((device & 0x7f) << 1) | 1, smbus_io_base + SMBHSTADDR);
+
+	byte = inb(smbus_io_base + SMBHSTCTRL);
+	byte &= 0xe3;		/* Clear [4:2] */
+	byte |= (1 << 3) | (1 << 6);	/* Byte data read/write command, start the command */
+	outb(byte, smbus_io_base + SMBHSTCTRL);
+
+	/* poll for transaction completion */
+	if (smbus_wait_until_done(smbus_io_base) < 0) {
+		return -3;	/* timeout or error */
+	}
+
+	/* read results of transaction */
+	byte = inb(smbus_io_base + SMBHSTDAT0);
+
+	return byte;
+}
+
+int do_smbus_write_byte(u32 smbus_io_base, u32 device,
+			       u32 address, u8 val)
+{
+	u8 byte;
+
+	if (smbus_wait_until_ready(smbus_io_base) < 0) {
+		return -2;	/* not ready */
+	}
+
+	/* set the command/address... */
+	outb(address & 0xff, smbus_io_base + SMBHSTCMD);
+
+	/* set the device I'm talking too */
+	outb(((device & 0x7f) << 1) | 0, smbus_io_base + SMBHSTADDR);
+
+	/* output value */
+	outb(val, smbus_io_base + SMBHSTDAT0);
+
+	byte = inb(smbus_io_base + SMBHSTCTRL);
+	byte &= 0xe3;		/* Clear [4:2] */
+	byte |= (1 << 3) | (1 << 6);	/* Byte data read/write command, start the command */
+	outb(byte, smbus_io_base + SMBHSTCTRL);
+
+	/* poll for transaction completion */
+	if (smbus_wait_until_done(smbus_io_base) < 0) {
+		return -3;	/* timeout or error */
+	}
+
+	return 0;
+}
+
+void alink_ab_indx(u32 reg_space, u32 reg_addr,
+			  u32 mask, u32 val)
+{
+	u32 tmp;
+
+	outl((reg_space & 0x7) << 29 | reg_addr, AB_INDX);
+	tmp = inl(AB_DATA);
+	/* rpr 4.2
+	 * For certain revisions of the chip, the ABCFG registers,
+	 * with an address of 0x100NN (where 'N' is any hexadecimal
+	 * number), require an extra programming step.*/
+	outl(0, AB_INDX);
+
+	tmp &= ~mask;
+	tmp |= val;
+
+	/* printk(BIOS_DEBUG, "about write %x, index=%x", tmp, (reg_space&0x3)<<29 | reg_addr); */
+	outl((reg_space & 0x7) << 29 | reg_addr, AB_INDX);	/* probably we dont have to do it again. */
+	outl(tmp, AB_DATA);
+	outl(0, AB_INDX);
+}
+
+void alink_rc_indx(u32 reg_space, u32 reg_addr, u32 port,
+			  u32 mask, u32 val)
+{
+	u32 tmp;
+
+	outl((reg_space & 0x7) << 29 | (port & 3) << 24 | reg_addr, AB_INDX);
+	tmp = inl(AB_DATA);
+	/* rpr 4.2
+	 * For certain revisions of the chip, the ABCFG registers,
+	 * with an address of 0x100NN (where 'N' is any hexadecimal
+	 * number), require an extra programming step.*/
+	outl(0, AB_INDX);
+
+	tmp &= ~mask;
+	tmp |= val;
+
+	//printk(BIOS_DEBUG, "about write %x, index=%x", tmp, (reg_space&0x3)<<29 | (port&3) << 24 | reg_addr);
+	outl((reg_space & 0x7) << 29 | (port & 3) << 24 | reg_addr, AB_INDX);	/* probably we dont have to do it again. */
+	outl(tmp, AB_DATA);
+	outl(0, AB_INDX);
+}
+
+/* space = 0: AX_INDXC, AX_DATAC
+ * space = 1: AX_INDXP, AX_DATAP
+ */
+void alink_ax_indx(u32 space /*c or p? */ , u32 axindc,
+			  u32 mask, u32 val)
+{
+	u32 tmp;
+
+	/* read axindc to tmp */
+	outl(space << 29 | space << 3 | 0x30, AB_INDX);
+	outl(axindc, AB_DATA);
+	outl(0, AB_INDX);
+	outl(space << 29 | space << 3 | 0x34, AB_INDX);
+	tmp = inl(AB_DATA);
+	outl(0, AB_INDX);
+
+	tmp &= ~mask;
+	tmp |= val;
+
+	/* write tmp */
+	outl(space << 29 | space << 3 | 0x30, AB_INDX);
+	outl(axindc, AB_DATA);
+	outl(0, AB_INDX);
+	outl(space << 29 | space << 3 | 0x34, AB_INDX);
+	outl(tmp, AB_DATA);
+	outl(0, AB_INDX);
+}
+#endif
diff --git a/src/southbridge/amd/sb800/smbus.h b/src/southbridge/amd/sb800/smbus.h
new file mode 100644
index 0000000000..fce8e96572
--- /dev/null
+++ b/src/southbridge/amd/sb800/smbus.h
@@ -0,0 +1,76 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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 SB800_SMBUS_H
+#define SB800_SMBUS_H
+
+//#include <stdint.h>
+
+#define SMBHSTSTAT 0x0
+#define SMBSLVSTAT 0x1
+#define SMBHSTCTRL 0x2
+#define SMBHSTCMD  0x3
+#define SMBHSTADDR 0x4
+#define SMBHSTDAT0 0x5
+#define SMBHSTDAT1 0x6
+#define SMBHSTBLKDAT 0x7
+
+#define SMBSLVCTRL 0x8
+#define SMBSLVCMD_SHADOW 0x9
+#define SMBSLVEVT 0xa
+#define SMBSLVDAT 0xc
+
+#define AX_INDXC  0
+#define AX_INDXP  2
+#define AXCFG     4
+#define ABCFG     6
+#define RC_INDXC  1
+#define RC_INDXP  3
+
+#define AB_INDX   0xCD8
+#define AB_DATA   (AB_INDX+4)
+
+/* Between 1-10 seconds, We should never timeout normally
+ * Longer than this is just painful when a timeout condition occurs.
+ */
+#define SMBUS_TIMEOUT (100*1000*10)
+
+#define abcfg_reg(reg, mask, val)	\
+	alink_ab_indx((ABCFG), (reg), (mask), (val))
+#define axcfg_reg(reg, mask, val)	\
+	alink_ab_indx((AXCFG), (reg), (mask), (val))
+#define axindxc_reg(reg, mask, val)	\
+	alink_ax_indx((AX_INDXC), (reg), (mask), (val))
+#define axindxp_reg(reg, mask, val)		\
+	alink_ax_indx((AX_INDXP), (reg), (mask), (val))
+#define rcindxc_reg(reg, port, mask, val)	\
+	alink_rc_indx((RC_INDXC), (reg), (port), (mask), (val))
+#define rcindxp_reg(reg, port, mask, val)	\
+	alink_rc_indx((RC_INDXP), (reg), (port), (mask), (val))
+
+int do_smbus_read_byte(u32 smbus_io_base, u32 device, u32 address);
+int do_smbus_write_byte(u32 smbus_io_base, u32 device, u32 address, u8 val);
+int do_smbus_recv_byte(u32 smbus_io_base, u32 device);
+int do_smbus_send_byte(u32 smbus_io_base, u32 device, u8 val);
+void alink_rc_indx(u32 reg_space, u32 reg_addr, u32 port, u32 mask, u32 val);
+void alink_ab_indx(u32 reg_space, u32 reg_addr, u32 mask, u32 val);
+void alink_ax_indx(u32 space /*c or p? */ , u32 axindc, u32 mask, u32 val);
+
+
+#endif
diff --git a/src/southbridge/amd/sb800/usb.c b/src/southbridge/amd/sb800/usb.c
new file mode 100644
index 0000000000..473ff5e199
--- /dev/null
+++ b/src/southbridge/amd/sb800/usb.c
@@ -0,0 +1,234 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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 <usbdebug.h>
+#include <arch/io.h>
+#include "sb800.h"
+
+static struct pci_operations lops_pci = {
+	.set_subsystem = pci_dev_set_subsystem,
+};
+
+static void usb_init(struct device *dev)
+{
+	u8 byte;
+	u16 word;
+
+	/* 7.1 Enable OHCI0-4 and EHCI Controllers */
+	/* pmio 0xEF; */
+
+	/* RPR 7.2 USB S4/S5 Wake-up or PHY Power-down Support */
+	byte = pm_ioread(0xF0);
+	byte |= 1 << 0;		/* A12, USB Wake from S5 not supported on the platform */
+	pm_iowrite(0xF0, byte);
+
+	/* RPR 7.4 Enable the USB controller to get reset by any software that generate a PCIRst# condition */
+	byte = pm_ioread(0xF0);
+	byte |= (1 << 2);
+	byte |= 3 << 8;		/* rpr 7.5 */
+	pm_iowrite(0xF0, byte);
+
+	/* RPR 7.9 Disable OHCI MSI Capability. */
+	word = pci_read_config16(dev, 0x40);
+	word |= (0x1 << 8);
+	pci_write_config16(dev, 0x40, word);
+}
+
+static void usb_init2(struct device *dev)
+{
+	u32 dword;
+	u32 usb2_bar0;
+	device_t sm_dev;
+
+	sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
+	//rev = get_sb800_revision(sm_dev);
+
+	/* dword = pci_read_config32(dev, 0xf8); */
+	/* dword |= 40; */
+	/* pci_write_config32(dev, 0xf8, dword); */
+
+	usb2_bar0 = pci_read_config32(dev, 0x10) & ~0xFF;
+	printk(BIOS_INFO, "usb2_bar0=0x%x\n", usb2_bar0);
+
+	/* RPR7.3 Enables the USB PHY auto calibration resister to match 45ohm resistence */
+	dword = 0x00020F00;
+	write32(usb2_bar0 + 0xC0, dword);
+
+	/* RPR7.8 Sets In/OUT FIFO threshold for best performance */
+	dword = 0x00400040;
+	write32(usb2_bar0 + 0xA4, dword);
+
+	/* RPR7.10 Disable EHCI MSI support */
+	dword = pci_read_config32(dev, 0x50);
+	dword |= (1 << 6);
+	pci_write_config32(dev, 0x50, dword);
+
+	/* RPR7.12 EHCI Async Park Mode */
+	dword = pci_read_config32(dev, 0x50);
+	dword &= ~(0xF << 8);
+	dword &= ~(0xF << 12);
+	dword |= 1 << 8;
+	dword |= 2 << 12;
+	pci_write_config32(dev, 0x50, dword);
+
+	/* RPR 6.12 EHCI Advance PHY Power Savings */
+	/* RPR says it is just for A12. CIMM sets it when it is above A11. */
+	/* But it makes the linux crash, so we skip it */
+	#if 0
+	dword = pci_read_config32(dev, 0x50);
+	dword |= 1 << 31;
+	pci_write_config32(dev, 0x50, dword);
+	#endif
+
+	/* Each step below causes the linux crashes. Leave them here
+	 * for future debugging. */
+#if 0
+	u8 byte;
+	u16 word;
+
+
+	/* RPR6.17 Disable the EHCI Dynamic Power Saving feature */
+	word = read32(usb2_bar0 + 0xBC);
+	word &= ~(1 << 12);
+	write16(usb2_bar0 + 0xBC, word);
+
+	/* RPR6.19 USB Controller DMA Read Delay Tolerant. */
+	if (rev >= REV_SB800_A14) {
+		byte = pci_read_config8(dev, 0x50);
+		byte |= (1 << 7);
+		pci_write_config8(dev, 0x50, byte);
+	}
+
+	/* RPR6.20 Async Park Mode. */
+	/* RPR recommends not to set these bits. */
+	#if 0
+	dword = pci_read_config32(dev, 0x50);
+	dword |= 1 << 23;
+	if (rev >= REV_SB800_A14) {
+		dword &= ~(1 << 2);
+	}
+	pci_write_config32(dev, 0x50, dword);
+	#endif
+
+	/* RPR6.22 Advance Async Enhancement */
+	/* RPR6.23 USB Periodic Cache Setting */
+	dword = pci_read_config32(dev, 0x50);
+	if (rev == REV_SB800_A12) {
+		dword |= 1 << 28; /* 6.22 */
+		dword |= 1 << 27; /* 6.23 */
+	} else if (rev >= REV_SB800_A14) {
+		dword |= 1 << 3;
+		dword &= ~(1 << 28); /* 6.22 */
+		dword |= 1 << 8;
+		dword &= ~(1 << 27); /* 6.23 */
+	}
+	printk(BIOS_DEBUG, "rpr 6.23, final dword=%x\n", dword);
+#endif
+}
+
+static void usb_set_resources(struct device *dev)
+{
+#if CONFIG_USBDEBUG
+	struct resource *res;
+	u32 base;
+	u32 old_debug;
+
+	old_debug = get_ehci_debug();
+	set_ehci_debug(0);
+#endif
+	pci_dev_set_resources(dev);
+
+#if CONFIG_USBDEBUG
+	res = find_resource(dev, 0x10);
+	set_ehci_debug(old_debug);
+	if (!res)
+		return;
+	base = res->base;
+	set_ehci_base(base);
+	report_resource_stored(dev, res, "");
+#endif
+
+}
+
+static struct device_operations usb_ops = {
+	.read_resources = pci_dev_read_resources,
+	.set_resources = usb_set_resources, /* pci_dev_set_resources, */
+	.enable_resources = pci_dev_enable_resources,
+	.init = usb_init,
+	.scan_bus = 0,
+	.ops_pci = &lops_pci,
+};
+
+static const struct pci_driver usb_0_driver __pci_driver = {
+	.ops = &usb_ops,
+	.vendor = PCI_VENDOR_ID_ATI,
+	.device = PCI_DEVICE_ID_ATI_SB800_USB_18_0,
+};
+static const struct pci_driver usb_1_driver __pci_driver = {
+	.ops = &usb_ops,
+	.vendor = PCI_VENDOR_ID_ATI,
+	.device = PCI_DEVICE_ID_ATI_SB800_USB_18_2,
+};
+
+/* the pci id of usb ctrl 0 and 1 are the same. */
+/*
+ * static const struct pci_driver usb_3_driver __pci_driver = {
+ * 	.ops = &usb_ops,
+ * 	.vendor = PCI_VENDOR_ID_ATI,
+ * 	.device = PCI_DEVICE_ID_ATI_SB800_USB_19_0,
+ * };
+ * static const struct pci_driver usb_4_driver __pci_driver = {
+ * 	.ops = &usb_ops,
+ * 	.vendor = PCI_VENDOR_ID_ATI,
+ * 	.device = PCI_DEVICE_ID_ATI_SB800_USB_19_1,
+ * };
+ */
+
+static const struct pci_driver usb_4_driver __pci_driver = {
+	.ops = &usb_ops,
+	.vendor = PCI_VENDOR_ID_ATI,
+	.device = PCI_DEVICE_ID_ATI_SB800_USB_20_5,
+};
+
+static struct device_operations usb_ops2 = {
+	.read_resources = pci_dev_read_resources,
+	.set_resources = usb_set_resources, /* pci_dev_set_resources, */
+	.enable_resources = pci_dev_enable_resources,
+	.init = usb_init2,
+	.scan_bus = 0,
+	.ops_pci = &lops_pci,
+};
+
+static const struct pci_driver usb_5_driver __pci_driver = {
+	.ops = &usb_ops2,
+	.vendor = PCI_VENDOR_ID_ATI,
+	.device = PCI_DEVICE_ID_ATI_SB800_USB_18_2,
+};
+/*
+ * static const struct pci_driver usb_5_driver __pci_driver = {
+ * 	.ops = &usb_ops2,
+ * 	.vendor = PCI_VENDOR_ID_ATI,
+ * 	.device = PCI_DEVICE_ID_ATI_SB800_USB_19_2,
+ * };
+ */