This patch adds support for the VIA VT8237S south bridge. The VT8237R programming remains unchanged (tested

on mine desktop) except of reverting the small change introduced by Bari
(gpio/inta setup reg 0x5b). This should go for some board specific file. The
change would broke at least mine board. But seems to be needed for jakllsch.

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Acked-by: Bari Ari <bari@onelabs.com> 



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3567 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

6 files changed, 619 insertions, 41 deletions

diff --git a/src/southbridge/via/vt8237r/Config.lb b/src/southbridge/via/vt8237r/Config.lb
index 90feb0f9ef..2c01d41a2e 100644
--- a/src/southbridge/via/vt8237r/Config.lb
+++ b/src/southbridge/via/vt8237r/Config.lb
@@ -20,6 +20,7 @@
 config chip.h
 
 driver vt8237r.o
+driver vt8237_ctrl.o
 driver vt8237r_ide.o
 driver vt8237r_lpc.o
 driver vt8237r_sata.o
diff --git a/src/southbridge/via/vt8237r/vt8237_ctrl.c b/src/southbridge/via/vt8237r/vt8237_ctrl.c
new file mode 100644
index 0000000000..666fbcf68c
--- /dev/null
+++ b/src/southbridge/via/vt8237r/vt8237_ctrl.c
@@ -0,0 +1,186 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008 Rudolf Marek <r.marek@assembler.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License v2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ops.h>
+#include <device/pci_ids.h>
+#include <console/console.h>
+
+/* We support here K8M890/K8T890 and VT8237/S/A PCI1/Vlink */
+
+static void vt8237_cfg(struct device *dev)
+{
+	u8 regm, regm2, regm3;
+
+	device_t devfun3;
+
+	devfun3 = dev_find_device(PCI_VENDOR_ID_VIA,
+					   PCI_DEVICE_ID_VIA_K8T890CE_3, 0);
+
+		if (!devfun3)
+			devfun3 = dev_find_device(PCI_VENDOR_ID_VIA,
+					   PCI_DEVICE_ID_VIA_K8M890CE_3, 0);
+
+		if (!devfun3)
+			die("Unknown NB");
+
+	/* CPU to PCI Flow Control 1 & 2, just fill in recommended */
+	pci_write_config8(dev, 0x70, 0xc2);
+	pci_write_config8(dev, 0x71, 0xc8);
+
+	/* PCI Control */
+	pci_write_config8(dev, 0x72, 0xee);
+	pci_write_config8(dev, 0x73, 0x01);
+	pci_write_config8(dev, 0x74, 0x3c);
+	pci_write_config8(dev, 0x75, 0x0f);
+	pci_write_config8(dev, 0x76, 0x50);
+	pci_write_config8(dev, 0x77, 0x48);
+	pci_write_config8(dev, 0x78, 0x01);
+	/* APIC on HT */
+	pci_write_config8(dev, 0x7c, 0x77); //maybe Enable LDT APIC Mode bit3 set to 1
+
+	/* WARNING: Need to copy some registers from NB (D0F3) to SB (D11F7). */
+
+	regm = pci_read_config8(devfun3, 0x88);	/* Shadow mem CTRL */
+	pci_write_config8(dev, 0x57, regm);
+
+	regm = pci_read_config8(devfun3, 0x80);	/* Shadow page C */
+	pci_write_config8(dev, 0x61, regm);
+
+	regm = pci_read_config8(devfun3, 0x81);	/* Shadow page D */
+	pci_write_config8(dev, 0x62, regm);
+
+	/* Shadow page F + memhole copy */
+	regm = pci_read_config8(devfun3, 0x83);
+	pci_write_config8(dev, 0x63, regm);
+
+	regm3 = pci_read_config8(devfun3, 0x82);/* Shadow page E */
+	pci_write_config8(dev, 0x64, regm);
+
+	regm = pci_read_config8(devfun3, 0x86);	/* SMM and APIC decoding */
+	pci_write_config8(dev, 0xe6, regm);
+}
+
+/**
+ * Example of setup: Setup the V-Link for VT8237R, 8X mode.
+ *
+ * For K8T890CF VIA recommends what is in VIA column, AW is award 8X:
+ *
+ *						 REG   DEF   AW  VIA-8X VIA-4X
+ *						 -----------------------------
+ * NB V-Link Manual Driving Control strobe	 0xb5  0x46  0x46  0x88  0x88
+ * NB V-Link Manual Driving Control - Data	 0xb6  0x46  0x46  0x88  0x88
+ * NB V-Link Receiving Strobe Delay		 0xb7  0x02  0x02  0x61  0x01
+ * NB V-Link Compensation Control bit4,0 (b5,b6) 0xb4  0x10  0x10  0x11  0x11
+ * SB V-Link Strobe Drive Control 		 0xb9  0x00  0xa5  0x98  0x98
+ * SB V-Link Data drive Control????		 0xba  0x00  0xbb  0x77  0x77
+ * SB V-Link Receive Strobe Delay????		 0xbb  0x04  0x11  0x11  0x11
+ * SB V-Link Compensation Control bit0 (use b9)	 0xb8  0x00  0x01  0x01  0x01
+ * V-Link CKG Control				 0xb0  0x05  0x05  0x06  0x03
+ * V-Link CKG Control				 0xb1  0x05  0x05  0x01  0x03
+ */
+
+static void vt8237s_vlink_init(struct device *dev)
+{
+	u8 reg;
+
+	device_t devfun7;
+
+	devfun7 = dev_find_device(PCI_VENDOR_ID_VIA,
+					   PCI_DEVICE_ID_VIA_K8T890CE_7, 0);
+
+	if (!devfun7)
+		devfun7 = dev_find_device(PCI_VENDOR_ID_VIA,
+					   PCI_DEVICE_ID_VIA_K8M890CE_7, 0);
+
+	/* no pairing NB found */
+	if (!devfun7)
+		return;
+
+	/*
+	 * This init code is valid only for the VT8237S! For different
+	 * sounthbridges (e.g. VT8237A, VT8237S, VT8237R (without plus R)
+	 * and VT8251) a different init code is required.
+	 */
+
+	pci_write_config8(devfun7, 0xb5, 0x66);
+	pci_write_config8(devfun7, 0xb6, 0x66);
+	pci_write_config8(devfun7, 0xb7, 0x65);
+
+	reg = pci_read_config8(devfun7, 0xb4);
+	reg |= 0x1;
+	pci_write_config8(devfun7, 0xb4, reg);
+
+	pci_write_config8(dev, 0xb9, 0x68);
+	pci_write_config8(dev, 0xba, 0x88);
+	pci_write_config8(dev, 0xbb, 0x89);
+
+
+	reg = pci_read_config8(dev, 0xbd);
+	reg |= 0x3;
+	pci_write_config8(dev, 0xbd, reg);
+
+	/* Program V-link 8X 8bit full duplex, parity disabled FIXME */
+	pci_write_config8(dev, 0x48, 0x13);
+}
+
+static void ctrl_enable(struct device *dev) {
+	
+	/* enable the 0:13 and 0:13.1 */
+	/* FIXME */
+	pci_write_config8(dev, 0x4f, 0x43);
+}
+
+
+extern void dump_south(device_t dev);
+
+static void ctrl_init(struct device *dev) {
+
+	/* TODO: Fix some ordering issue fo V-link set Rx77[6] and PCI1_Rx4F[0]
+	   should to 1 FIXME DO you need?*/
+
+	/* VT8237R specific configuration  other SB are done in their own directories */
+	/*  add A version */
+	device_t devsb = dev_find_device(PCI_VENDOR_ID_VIA,
+					PCI_DEVICE_ID_VIA_VT8237S_LPC, 0);
+	if (devsb) {
+		/* FIXME: Skip v-link setup for now */
+//		vt8237s_vlink_init(dev);
+	}
+
+	/* configure PCI1 and copy mirror registers from D0F3 */
+	vt8237_cfg(dev);
+	dump_south(dev);
+}
+
+static const struct device_operations ctrl_ops = {
+	.read_resources		= pci_dev_read_resources,
+	.set_resources		= pci_dev_set_resources,
+	.enable_resources	= pci_dev_enable_resources,
+	.init			= ctrl_init,
+	.enable			= ctrl_enable,
+	.ops_pci		= 0,
+};
+
+static const struct pci_driver northbridge_driver_t __pci_driver = {
+	.ops	= &ctrl_ops,
+	.vendor	= PCI_VENDOR_ID_VIA,
+	.device	= PCI_DEVICE_ID_VIA_VT8237_VLINK,
+};
diff --git a/src/southbridge/via/vt8237r/vt8237r.h b/src/southbridge/via/vt8237r/vt8237r.h
index 444500b82a..231553bc11 100644
--- a/src/southbridge/via/vt8237r/vt8237r.h
+++ b/src/southbridge/via/vt8237r/vt8237r.h
@@ -20,6 +20,8 @@
 #ifndef SOUTHBRIDGE_VIA_VT8237R_VT8237R_H
 #define SOUTHBRIDGE_VIA_VT8237R_VT8237R_H
 
+#include <stdint.h>
+
 /* Static resources for the VT8237R southbridge */
 
 #define VT8237R_APIC_ID			0x2
@@ -27,6 +29,7 @@
 #define VT8237R_SMBUS_IO_BASE		0x400
 /* 0x0 disabled, 0x2 reserved, 0xf = IRQ15 */
 #define VT8237R_ACPI_IRQ		0x9
+#define VT8237S_SPI_MEM_BASE		0xfed02000ULL
 #define VT8237R_HPET_ADDR		0xfed00000ULL
 #define VT8237R_APIC_BASE		0xfec00000ULL
 
@@ -68,4 +71,28 @@
 
 #define SMBUS_DELAY() inb(0x80)
 
+struct vt8237_network_rom {
+	u8 mac_address[6];
+	u8 phy_addr;
+	u8 res1;
+	u16 sub_sid;
+	u16 sub_vid;
+	u16 pid;
+	u16 vid;
+	u8 pmcc;
+	u8 data_sel;
+	u8 pmu_data_reg;
+	u8 aux_curr;
+	u16 reserved;
+	u8 min_gnt;
+	u8 max_lat;
+	u8 bcr0;
+	u8 bcr1;
+	u8 cfg_a;
+	u8 cfg_b;
+	u8 cfg_c;
+	u8 cfg_d;
+	u8 checksum;
+} __attribute__ ((packed));
+
 #endif
diff --git a/src/southbridge/via/vt8237r/vt8237r_early_smbus.c b/src/southbridge/via/vt8237r/vt8237r_early_smbus.c
index 5e62f39e4d..5b865d3814 100644
--- a/src/southbridge/via/vt8237r/vt8237r_early_smbus.c
+++ b/src/southbridge/via/vt8237r/vt8237r_early_smbus.c
@@ -128,7 +128,6 @@ u8 smbus_read_byte(u8 dimm, u8 offset)
 
 	return val;
 }
-
 /**
  * Enable the smbus on vt8237r-based systems
  */
@@ -137,11 +136,17 @@ void enable_smbus(void)
 	device_t dev;
 
 	/* Power management controller */
+
 	dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
 				       PCI_DEVICE_ID_VIA_VT8237R_LPC), 0);
 
-	if (dev == PCI_DEV_INVALID)
-		die("Power management controller not found\r\n");
+	if (dev == PCI_DEV_INVALID) {
+		/* Power management controller */
+		dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
+					       PCI_DEVICE_ID_VIA_VT8237S_LPC), 0);
+		if (dev == PCI_DEV_INVALID)
+			die("Power management controller not found\r\n");
+	}
 
 	/* 7 = SMBus Clock from RTC 32.768KHz
 	 * 5 = Internal PLL reset from susp
@@ -213,17 +218,253 @@ void smbus_fixup(const struct mem_controller *ctrl)
 		PRINT_DEBUG("Done\r\n");
 }
 
+/* fixme better separate the NB and SB, will done once it works */
+
+void vt8237_sb_enable_fid_vid(void) {
+	device_t dev;
+	device_t devctl;
+
+	/* Power management controller */
+	dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
+				       PCI_DEVICE_ID_VIA_VT8237R_LPC), 0);
+
+	if (dev == PCI_DEV_INVALID) {
+    		/* Power management controller */
+		dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
+					       PCI_DEVICE_ID_VIA_VT8237S_LPC), 0);
+		if (dev == PCI_DEV_INVALID)
+			return;
+
+		devctl = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
+					       PCI_DEVICE_ID_VIA_VT8237_VLINK), 0);
+		if (devctl == PCI_DEV_INVALID)
+			return;
+		
+		{
+		u8 tmp;
+		tmp = pci_read_config8(devctl, 0xec);
+		print_debug("EC is ");
+		print_debug_hex8(tmp);
+		print_debug(" E5 is ");
+		tmp = pci_read_config8(dev, 0xe5);
+		print_debug_hex8(tmp);
+		
+		}
+		/* Set ACPI base address to I/O VT8237R_ACPI_IO_BASE. */
+		pci_write_config16(dev, 0x88, VT8237R_ACPI_IO_BASE | 0x1);
+		/* Enable ACPI accessm RTC signal gated with PSON. */
+		pci_write_config8(dev, 0x81, 0x84);
+		/* Allow SLP# signal to assert LDTSTOP_L.
+		 * Will work for C3 and for FID/VID change.
+		 */
+
+		/* fixme */
+		outb(0xff, VT8237R_ACPI_IO_BASE + 0x50);  //fixme maybe not needed
+
+//		outb(0x4, VT8237R_ACPI_IO_BASE + 0x50);  //fixme maybe not needed
+
+		/* it seems for AMD LDTSTP is connected not to SLP anymore */
+		/* enable 0: DPSLP# / DPRSTP# / VRDSLP */
+
+		/* Enable SATA LED, VR timer = 100us
+		 * Enable DPSLP# / DPRSTP# / VRDSLP - WARNING LDTSTP connetcs to some of those pins! (and not to SLP as on R ver)
+		 */
+		 //fixme
+		pci_write_config8(dev, 0xe5, 0x69);
+	
+		/* REQ5 as PCI request input - should be together with INTE-INTH. 
+		 * Fast VR timer disable - need for LDTSTP signal
+		*/
+		pci_write_config8(dev, 0xe4, 0xa5);
+	
+		/* reduce further the STPCLK/LDTSTP signal to 5us */
+
+		pci_write_config8(dev, 0xec, 0x4);
+		/* Host Bus Power Management Control, maybe not needed */
+		pci_write_config8(dev, 0x8c, 0x5);
+
+		/* so the chip knows we are on AMD */
+		pci_write_config8(devctl, 0x7c, 0x77);
+
+		devctl = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
+					       0x2336), 0);
+		if (devctl == PCI_DEV_INVALID)
+			return;
+		/* Enable C2NOW delay to PSTATECTL VID / FID Change Delay to P-State Control */
+		pci_write_config8(devctl, 0xa6, 0x83);
+
+		//return; //FIXME fall through some revs have it old way
+	}
+	/* Set ACPI base address to I/O VT8237R_ACPI_IO_BASE. */
+	pci_write_config16(dev, 0x88, VT8237R_ACPI_IO_BASE | 0x1);
+	/* Enable ACPI accessm RTC signal gated with PSON. */
+	pci_write_config8(dev, 0x81, 0x84);
+	/* Allow SLP# signal to assert LDTSTOP_L.
+	 * Will work for C3 and for FID/VID change.
+	 */
+	outb(0x1, VT8237R_ACPI_IO_BASE + 0x11);
+}
+
 void enable_rom_decode(void)
 {
 	device_t dev;
 
-	/* Bus Control and Power Management  */
+	/* Power management controller */
 	dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
 				       PCI_DEVICE_ID_VIA_VT8237R_LPC), 0);
 
-	if (dev == PCI_DEV_INVALID)
-		die("SB not found\r\n");
+	if (dev == PCI_DEV_INVALID) {
+    		/* Power management controller */
+		dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
+					       PCI_DEVICE_ID_VIA_VT8237S_LPC), 0);
+		if (dev == PCI_DEV_INVALID)
+			return;
+	}
 
 	/* ROM decode last 1MB FFC00000 - FFFFFFFF */
 	pci_write_config8(dev, 0x41, 0x7f);
 }
+
+void vt8237_early_spi_init(void) {
+	device_t dev;
+	volatile u16 *spireg;
+	u32 tmp;
+
+	/* Bus Control and Power Management  */
+	dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
+				       PCI_DEVICE_ID_VIA_VT8237S_LPC), 0);
+
+	if (dev == PCI_DEV_INVALID)
+		die("SB not found\r\n");
+
+	/* put SPI base 20 d0 fe */
+	tmp = pci_read_config32(dev, 0xbc);
+	pci_write_config32(dev, 0xbc, (VT8237S_SPI_MEM_BASE >> 8) | (tmp & 0xFF000000));
+
+	/* set SPI clock to 33MHz */
+	spireg = (u16 *) (VT8237S_SPI_MEM_BASE + 0x6c);
+	(*spireg) &=  0xff00;
+}
+
+/* offset 0x58
+ * 31:20 	reserved
+ * 19:16	4 bit position in shadow EEPROM
+ * 15:0		data to write
+ *
+ * offset 0x5c
+ * 31:28	reserved
+ * 27 		ERDBG - enable read from 0x5c
+ * 26		reserved
+ * 25		SEELD
+ * 24		SEEPR - write 1 when done updating, wait until SEELD is set to 1, sticky
+ *		cleared by reset, if it is 1 writing is disabled
+ * 19:16	4 bit position in shadow EEPROM
+ * 15:0		data from shadow EEPROM
+ *
+ * after PCIRESET SEELD and SEEPR must be 1 and 1
+*/
+
+/* 1 = needs PCI reset, 0 don't reset, network initialized */
+
+/* fixme maybe close the debug register after use? */
+
+#define LAN_TIMEOUT 0x7FFFFFFF
+
+int vt8237_early_network_init(struct vt8237_network_rom *rom) {
+	struct vt8237_network_rom n;
+	int loops;
+	device_t dev;
+	u32 tmp;
+	u8 status;
+	u16 *rom_write;
+	unsigned int checksum;
+	int i;
+
+	/* Network adapter */
+	dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
+				       PCI_DEVICE_ID_VIA_8233_7), 0);
+
+	if (dev == PCI_DEV_INVALID) {
+	    print_err("Network is disabled, please enable\n");
+	    return 0;
+	}
+
+	tmp = pci_read_config32(dev, 0x5c);
+	/* enable ERDBG */
+	tmp |= 0x08000000;
+	pci_write_config32(dev, 0x5c, tmp);
+	
+	status = ((pci_read_config32(dev, 0x5c) >> 24) & 0x3);
+	
+	if (status == 3) {
+	    /* network controller OK, EEPROM loaded */
+	    return 0;
+	}
+	
+	if (rom == NULL) {
+	    print_err("No configuration data specified, using default MAC!\n");
+		n.mac_address[0] = 0x0;
+		n.mac_address[1] = 0x0;
+		n.mac_address[2] = 0xde;
+		n.mac_address[3] = 0xad;
+		n.mac_address[4] = 0xbe;
+		n.mac_address[5] = 0xef;
+		n.phy_addr = 0x1;
+		n.res1 = 0x0;
+		n.sub_sid = 0x102;
+		n.sub_vid = 0x1106;
+		n.pid = 0x3065;
+		n.vid = 0x1106;
+		n.pmcc = 0x1f;
+		n.data_sel = 0x10;
+		n.pmu_data_reg = 0x0;
+		n.aux_curr = 0x0;
+		n.reserved = 0x0;
+		n.min_gnt = 0x3;
+		n.max_lat = 0x8;
+		n.bcr0 = 0x9;
+		n.bcr1 = 0xe;
+		n.cfg_a = 0x3;
+		n.cfg_b = 0x0;
+		n.cfg_c = 0x40;
+		n.cfg_d = 0x82;
+		n.checksum = 0x0;
+		rom = &n;
+	}
+	
+	rom_write = (u16 *) rom;
+	checksum = 0;
+	/* write all data except checksum and second to last byte */
+	tmp &= 0xff000000; /* leave reserved bits in */
+	for (i = 0; i < 15; i++) {
+		pci_write_config32(dev, 0x58, tmp | (i << 16) | rom_write[i]);
+		/* lame code fixme */
+		checksum += rom_write[i] & 0xff;
+		//checksum %= 256;
+		checksum += (rom_write[i] >> 8) & 0xff;
+		//checksum %= 256;
+	}
+	
+	checksum += (rom_write[15] & 0xff);
+	checksum = ~(checksum & 0xff);
+	tmp |= (((checksum & 0xff) << 8) | rom_write[15]);
+
+	/* write last byte and checksum */
+	pci_write_config32(dev, 0x58, (15 << 16) |  tmp);
+	
+	tmp = pci_read_config32(dev, 0x5c);
+	pci_write_config32(dev, 0x5c, tmp | 0x01000000); /* toggle SEEPR */
+	
+	/* Yes, this is a mess, but it's the easiest way to do it. */
+	while ( (((pci_read_config32(dev, 0x5c) >> 25) & 1) == 0)
+ 			&& (loops < LAN_TIMEOUT))
+		++loops;
+
+	if (loops >= LAN_TIMEOUT) {
+	    print_err("Timout - LAN controller did not accept configuration\n");
+	    return 0;
+	}
+	
+	/* we are done, config will be used after PCIRST# */
+	return 1;
+}
diff --git a/src/southbridge/via/vt8237r/vt8237r_lpc.c b/src/southbridge/via/vt8237r/vt8237r_lpc.c
index d4721a23f3..4d24e6161d 100644
--- a/src/southbridge/via/vt8237r/vt8237r_lpc.c
+++ b/src/southbridge/via/vt8237r/vt8237r_lpc.c
@@ -1,7 +1,7 @@
 /*
  * This file is part of the coreboot project.
  *
- * Copyright (C) 2007 Rudolf Marek <r.marek@assembler.cz>
+ * Copyright (C) 2007, 2008 Rudolf Marek <r.marek@assembler.cz>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License v2 as published by
@@ -116,6 +116,8 @@ static void setup_ioapic(u32 ioapic_base)
 	}
 }
 
+static void southbridge_init_common(struct device *dev);
+
 /** Set up PCI IRQ routing, route everything through APIC. */
 static void pci_routing_fixup(struct device *dev)
 {
@@ -173,6 +175,7 @@ static void setup_pm(device_t dev)
 
 	/* 7 = stp to sust delay 1msec
 	 * 6 = SUSST# Deasserted Before PWRGD for STD
+	 * 4 = PWRGOOD reset on VT8237A/S
 	 * 3 = GPO26/GPO27 is GPO 
 	 * 2 = Disable Alert on Lan
 	 */
@@ -181,14 +184,6 @@ static void setup_pm(device_t dev)
 	/* Disable GP3 timer. */
 	pci_write_config8(dev, 0x98, 0);
 
-	/* Enable SATA LED, disable special CPU Frequency Change -
-	 * GPIO28 GPIO22 GPIO29 GPIO23 are GPIOs.
-	 */
-	pci_write_config8(dev, 0xe5, 0x9);
-
-	/* REQ5 as PCI request input - should be together with INTE-INTH. */
-	pci_write_config8(dev, 0xe4, 0x4);
-
 	/* Enable ACPI accessm RTC signal gated with PSON. */
 	pci_write_config8(dev, 0x81, 0x84);
 
@@ -222,6 +217,30 @@ static void setup_pm(device_t dev)
 	/* SCI is generated for RTC/pwrBtn/slpBtn. */
 	outw(0x001, VT8237R_ACPI_IO_BASE + 0x04);
 
+}
+
+
+static void vt8237r_init(struct device *dev) {
+	u8 enables;
+
+	/* Enable SATA LED, disable special CPU Frequency Change -
+	 * GPIO28 GPIO22 GPIO29 GPIO23 are GPIOs.
+	 */
+	pci_write_config8(dev, 0xe5, 0x9);
+
+	/* REQ5 as PCI request input - should be together with INTE-INTH. */
+	pci_write_config8(dev, 0xe4, 0x4);
+
+	/* Set bit 3 of 0x4f (use INIT# as CPU reset). */
+	enables = pci_read_config8(dev, 0x4f);
+	enables |= 0x08;
+	pci_write_config8(dev, 0x4f, enables);
+
+	/* Set Read Pass Write Control Enable (force A2 from APIC FSB to low). */
+	pci_write_config8(dev, 0x48, 0x8c);
+
+	southbridge_init_common(dev);
+
 	/* FIXME: Intel needs more bit set for C2/C3. */
 
 	/* Allow SLP# signal to assert LDTSTOP_L.
@@ -230,7 +249,44 @@ static void setup_pm(device_t dev)
 	outb(0x1, VT8237R_ACPI_IO_BASE + 0x11);
 }
 
-static void vt8237r_init(struct device *dev)
+static void vt8237s_init(struct device *dev)
+{
+	u32 tmp;
+	
+	/* put SPI base VT8237S_SPI_MEM_BASE */
+	tmp = pci_read_config32(dev, 0xbc);
+	pci_write_config32(dev, 0xbc, (VT8237S_SPI_MEM_BASE >> 8) | (tmp & 0xFF000000));
+
+	/* Enable SATA LED, VR timer = 100us, VR timer should be fixed */
+	
+	pci_write_config8(dev, 0xe5, 0x69);
+
+	/* REQ5 as PCI request input - should be together with INTE-INTH. 
+	 * Fast VR timer disable - need for LDTSTOP_L signal
+	*/
+	pci_write_config8(dev, 0xe4, 0xa5);
+
+	/* reduce further the STPCLK/LDTSTP signal to 5us */
+
+	pci_write_config8(dev, 0xec, 0x4);
+
+	/* Host Bus Power Management Control, maybe not needed */
+	pci_write_config8(dev, 0x8c, 0x5);
+
+	/* Enable HPET at VT8237R_HPET_ADDR., does not work correctly on R */
+	pci_write_config32(dev, 0x68, (VT8237R_HPET_ADDR | 0x80));
+
+	southbridge_init_common(dev);
+	
+	/* FIXME: Intel needs more bit set for C2/C3. */
+
+	/* Allow SLP# signal to assert LDTSTOP_L.
+	 * Will work for C3 and for FID/VID change. FIXME FIXME, pre rev A2
+	 */
+	outb(0xff, VT8237R_ACPI_IO_BASE + 0x50);
+	dump_south(dev);
+}
+static void vt8237_common_init(struct device *dev)
 {
 	u8 enables, byte;
 
@@ -275,7 +331,7 @@ static void vt8237r_init(struct device *dev)
 	/* Delay transaction control */
 	pci_write_config8(dev, 0x43, 0xb);
 
-	/* I/O recovery time */
+	/* I/O recovery time, default IDE routing */
 	pci_write_config8(dev, 0x4c, 0x44);
 
 	/* ROM memory cycles go to LPC. */
@@ -288,25 +344,14 @@ static void vt8237r_init(struct device *dev)
 	 *     bit 1=1 works for Aaron at VIA, bit 1=0 works for jakllsch
 	 *   0 Dynamic Clock Gating Main Switch (1=Enable)
 	 */
-	pci_write_config8(dev, 0x5b, 0x9);
-
-	/* Set Read Pass Write Control Enable (force A2 from APIC FSB to low). */
-	pci_write_config8(dev, 0x48, 0x8c);
+	pci_write_config8(dev, 0x5b, 0xb);
 
 	/* Set 0x58 to 0x43 APIC and RTC. */
 	pci_write_config8(dev, 0x58, 0x43);
 
-	/* Set bit 3 of 0x4f (use INIT# as CPU reset). */
-	enables = pci_read_config8(dev, 0x4f);
-	enables |= 0x08;
-	pci_write_config8(dev, 0x4f, enables);
-
 	/* Enable serial IRQ, 6PCI clocks. */
 	pci_write_config8(dev, 0x52, 0x9);
 
-	/* Enable HPET at VT8237R_HPET_ADDR. */
-	pci_write_config32(dev, 0x68, (VT8237R_HPET_ADDR | 0x80));
-
 	/* Power management setup */
 	setup_pm(dev);
 
@@ -348,25 +393,40 @@ static void init_keyboard(struct device *dev)
 		init_pc_keyboard(0x60, 0x64, 0);
 }
 
-static void southbridge_init(struct device *dev)
+static void southbridge_init_common(struct device *dev)
 {
-	vt8237r_init(dev);
+	vt8237_common_init(dev);
 	pci_routing_fixup(dev);
 	setup_ioapic(VT8237R_APIC_BASE);
 	setup_i8259();
 	init_keyboard(dev);
 }
 
-static const struct device_operations vt8237r_lpc_ops = {
+static const struct device_operations vt8237r_lpc_ops_s = {
+	.read_resources		= vt8237r_read_resources,
+	.set_resources		= pci_dev_set_resources,
+	.enable_resources	= vt8237r_enable_resources,
+	.init			= &vt8237s_init,
+	.scan_bus		= scan_static_bus,
+};
+
+
+static const struct device_operations vt8237r_lpc_ops_r = {
 	.read_resources		= vt8237r_read_resources,
 	.set_resources		= pci_dev_set_resources,
 	.enable_resources	= vt8237r_enable_resources,
-	.init			= &southbridge_init,
+	.init			= &vt8237r_init,
 	.scan_bus		= scan_static_bus,
 };
 
-static const struct pci_driver lpc_driver __pci_driver = {
-	.ops	= &vt8237r_lpc_ops,
+static const struct pci_driver lpc_driver_r __pci_driver = {
+	.ops	= &vt8237r_lpc_ops_r,
 	.vendor	= PCI_VENDOR_ID_VIA,
 	.device	= PCI_DEVICE_ID_VIA_VT8237R_LPC,
 };
+
+static const struct pci_driver lpc_driver_s __pci_driver = {
+	.ops	= &vt8237r_lpc_ops_s,
+	.vendor	= PCI_VENDOR_ID_VIA,
+	.device	= PCI_DEVICE_ID_VIA_VT8237S_LPC,
+};
diff --git a/src/southbridge/via/vt8237r/vt8237r_sata.c b/src/southbridge/via/vt8237r/vt8237r_sata.c
index ecdafdfd88..77d7b0c3e2 100644
--- a/src/southbridge/via/vt8237r/vt8237r_sata.c
+++ b/src/southbridge/via/vt8237r/vt8237r_sata.c
@@ -1,7 +1,7 @@
 /*
  * This file is part of the coreboot project.
  *
- * Copyright (C) 2007 Rudolf Marek <r.marek@assembler.cz>
+ * Copyright (C) 2007, 2008 Rudolf Marek <r.marek@assembler.cz>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License v2 as published by
@@ -24,7 +24,7 @@
 
 #define SATA_MISC_CTRL 0x45
 
-static void sata_init(struct device *dev)
+static void sata_i_init(struct device *dev)
 {
 	u8 reg;
 
@@ -39,19 +39,82 @@ static void sata_init(struct device *dev)
 	pci_write_config8(dev, PCI_CLASS_DEVICE, 0x1);
 	reg |= 0x80;		/* Sub Class Write Protect on */
 	pci_write_config8(dev, SATA_MISC_CTRL, reg);
+	
+	return;
 }
 
-static const struct device_operations sata_ops = {
+static void sata_ii_init(struct device *dev) {
+	u8 reg;
+
+	sata_i_init(dev);
+	
+	/* analog black magic, you may or may not need to adjust 0x60-0x6f, depends on PCB */
+	
+	/* Analog PHY - gen1
+	 * CDR bandwidth [6:5] = 3
+	 * Squelch Window Select [4:3] = 1
+	 * CDR Charge Pump [2:0] = 1
+	 */
+	 
+	pci_write_config8(dev, 0x64, 0x49);
+	
+	/* adjust driver current source value to 9 */
+	reg = pci_read_config8(dev, 0x65);
+	reg &= 0xf0;
+	reg |= 0x9;
+	pci_write_config8(dev, 0x65, reg);
+	
+	/* set all manual termination 50ohm bits [2:0] and enable [4] */
+	reg = pci_read_config8(dev, 0x6a);
+	reg |= 0xf;
+	pci_write_config8(dev, 0x6a, reg);
+
+	/* Analog PHY - gen2
+	 * CDR bandwidth [5:4] = 2
+	 * Pre / De-emphasis Level [7:6] controls bits [3:2], rest in 0x6e
+	 * CDR Charge Pump [2:0] = 1
+	 */
+
+	reg = pci_read_config8(dev, 0x6f);
+	reg &= 0x08;
+	reg |= 0x61;
+	pci_write_config8(dev, 0x6f, reg);
+
+	/* check if staggered spinup is supported */
+	reg = pci_read_config8(dev, 0x83);
+	if ((reg & 0x8) == 0) {
+		/* start OOB sequence on both drives */
+		reg |= 0x30;
+		pci_write_config8(dev, 0x83, reg);
+	}
+}
+
+static const struct device_operations sata_i_ops = {
 	.read_resources		= pci_dev_read_resources,
 	.set_resources		= pci_dev_set_resources,
 	.enable_resources	= pci_dev_enable_resources,
-	.init			= sata_init,
+	.init			= sata_i_init,
 	.enable			= 0,
 	.ops_pci		= 0,
 };
 
-static const struct pci_driver northbridge_driver __pci_driver = {
-	.ops	= &sata_ops,
+static const struct device_operations sata_ii_ops = {
+	.read_resources		= pci_dev_read_resources,
+	.set_resources		= pci_dev_set_resources,
+	.enable_resources	= pci_dev_enable_resources,
+	.init			= sata_ii_init,
+	.enable			= 0,
+	.ops_pci		= 0,
+};
+
+static const struct pci_driver northbridge_driver_ii __pci_driver = {
+	.ops	= &sata_ii_ops,
+	.vendor	= PCI_VENDOR_ID_VIA,
+	.device	= PCI_DEVICE_ID_VIA_VT8237_SATA,
+};
+
+static const struct pci_driver northbridge_driver_i __pci_driver = {
+	.ops	= &sata_i_ops,
 	.vendor	= PCI_VENDOR_ID_VIA,
 	.device	= PCI_DEVICE_ID_VIA_VT6420_SATA,
 };