path: root/resources/libreboot/patch/kgpe-d16/0007-southbridge-amd-sb700-Fix-boot-hang-on-ASUS-KGPE-D16.patch

From c95c41fbedceda4de85a076f8fc600c82106727c Mon Sep 17 00:00:00 2001
From: Timothy Pearson <tpearson@raptorengineeringinc.com>
Date: Sat, 5 Sep 2015 17:46:15 -0500
Subject: [PATCH 007/143] southbridge/amd/sb700: Fix boot hang on ASUS
 KGPE-D16

Change-Id: I1d7d6715663a13ab94fd6d71808e35f0f7384d00
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
---
 src/southbridge/amd/sb700/Kconfig       |    4 +
 src/southbridge/amd/sb700/acpi/ide.asl  |  234 +++++++++++++++++++++++++++++++
 src/southbridge/amd/sb700/acpi/sata.asl |  133 ++++++++++++++++++
 src/southbridge/amd/sb700/bootblock.c   |   46 +++++-
 src/southbridge/amd/sb700/early_setup.c |   18 +++
 src/southbridge/amd/sb700/lpc.c         |    3 +
 src/southbridge/amd/sb700/sm.c          |   21 +--
 7 files changed, 444 insertions(+), 15 deletions(-)
 create mode 100644 src/southbridge/amd/sb700/acpi/ide.asl
 create mode 100644 src/southbridge/amd/sb700/acpi/sata.asl

diff --git a/src/southbridge/amd/sb700/Kconfig b/src/southbridge/amd/sb700/Kconfig
index 0761934..bca74fb 100644
--- a/src/southbridge/amd/sb700/Kconfig
+++ b/src/southbridge/amd/sb700/Kconfig
@@ -42,6 +42,10 @@ config SOUTHBRIDGE_AMD_SB700_SKIP_ISA_DMA_INIT
 	bool
 	default n
 
+config SOUTHBRIDGE_AMD_SB700_DISABLE_ISA_DMA
+	bool
+	default n
+
 config EHCI_BAR
 	hex
 	default 0xfef00000
diff --git a/src/southbridge/amd/sb700/acpi/ide.asl b/src/southbridge/amd/sb700/acpi/ide.asl
new file mode 100644
index 0000000..9b5e3ea
--- /dev/null
+++ b/src/southbridge/amd/sb700/acpi/ide.asl
@@ -0,0 +1,234 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
+ * 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
+ */
+
+/* Some timing tables */
+Name(UDTT, Package(){ /* Udma timing table */
+	120, 90, 60, 45, 30, 20, 15, 0	/* UDMA modes 0 -> 6 */
+})
+
+Name(MDTT, Package(){ /* MWDma timing table */
+	480, 150, 120, 0	/* Legacy DMA modes 0 -> 2 */
+})
+
+Name(POTT, Package(){ /* Pio timing table */
+	600, 390, 270, 180, 120, 0	/* PIO modes 0 -> 4 */
+})
+
+/* Some timing register value tables */
+Name(MDRT, Package(){ /* MWDma timing register table */
+	0x77, 0x21, 0x20, 0xFF	/* Legacy DMA modes 0 -> 2 */
+})
+
+Name(PORT, Package(){
+	0x99, 0x47, 0x34, 0x22, 0x20, 0x99	/* PIO modes 0 -> 4 */
+})
+
+OperationRegion(ICRG, PCI_Config, 0x40, 0x20) /* ide control registers */
+	Field(ICRG, AnyAcc, NoLock, Preserve)
+{
+	PPTS, 8,	/* Primary PIO Slave Timing */
+	PPTM, 8,	/* Primary PIO Master Timing */
+	OFFSET(0x04), PMTS, 8,	/* Primary MWDMA Slave Timing */
+	PMTM, 8,	/* Primary MWDMA Master Timing */
+	OFFSET(0x08), PPCR, 8,	/* Primary PIO Control */
+	OFFSET(0x0A), PPMM, 4,	/* Primary PIO master Mode */
+	PPSM, 4,	/* Primary PIO slave Mode */
+	OFFSET(0x14), PDCR, 2,	/* Primary UDMA Control */
+	OFFSET(0x16), PDMM, 4,	/* Primary UltraDMA Mode */
+	PDSM, 4,	/* Primary UltraDMA Mode */
+}
+
+Method(GTTM, 1) /* get total time*/
+{
+	Store(And(Arg0, 0x0F), Local0)	/* Recovery Width */
+	Increment(Local0)
+	Store(ShiftRight(Arg0, 4), Local1)	/* Command Width */
+	Increment(Local1)
+	Return(Multiply(30, Add(Local0, Local1)))
+}
+
+Device(PRID)
+{
+	Name (_ADR, Zero)
+	Method(_GTM, 0, Serialized)
+	{
+		NAME(OTBF, Buffer(20) { /* out buffer */
+			0xFF, 0xFF, 0xFF, 0xFF,
+			0xFF, 0xFF, 0xFF, 0xFF,
+			0xFF, 0xFF, 0xFF, 0xFF,
+			0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00
+		})
+
+		CreateDwordField(OTBF, 0, PSD0)   /* PIO spd0 */
+		CreateDwordField(OTBF, 4, DSD0)   /* DMA spd0 */
+		CreateDwordField(OTBF, 8, PSD1)   /* PIO spd1 */
+		CreateDwordField(OTBF, 12, DSD1) /* DMA spd1 */
+		CreateDwordField(OTBF, 16, BFFG) /* buffer flags */
+
+		/* Just return if the channel is disabled */
+		If(And(PPCR, 0x01)) { /* primary PIO control */
+			Return(OTBF)
+		}
+
+		/* Always tell them independent timing available and IOChannelReady used on both drives */
+		Or(BFFG, 0x1A, BFFG)
+
+		Store(GTTM(PPTM), PSD0) /* save total time of primary PIO master timming  to PIO spd0 */
+		Store(GTTM(PPTS), PSD1) /* save total time of primary PIO slave Timing  to PIO spd1 */
+
+		If(And(PDCR, 0x01)) {	/* It's under UDMA mode */
+			Or(BFFG, 0x01, BFFG)
+			Store(DerefOf(Index(UDTT, PDMM)), DSD0)
+		}
+		Else {
+			Store(GTTM(PMTM), DSD0) /* Primary MWDMA Master Timing,  DmaSpd0 */
+		}
+
+		If(And(PDCR, 0x02)) {	/* It's under UDMA mode */
+			Or(BFFG, 0x04, BFFG)
+			Store(DerefOf(Index(UDTT, PDSM)), DSD1)
+		}
+		Else {
+			Store(GTTM(PMTS), DSD1) /* Primary MWDMA Slave Timing,  DmaSpd0 */
+		}
+
+		Return(OTBF) /* out buffer */
+	}				/* End Method(_GTM) */
+
+	Method(_STM, 3, Serialized)
+	{
+		NAME(INBF, Buffer(20) { /* in buffer */
+			0xFF, 0xFF, 0xFF, 0xFF,
+			0xFF, 0xFF, 0xFF, 0xFF,
+			0xFF, 0xFF, 0xFF, 0xFF,
+			0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00
+		})
+
+		CreateDwordField(INBF, 0, PSD0)    /* PIO spd0 */
+		CreateDwordField(INBF, 4, DSD0)   /* PIO spd0 */
+		CreateDwordField(INBF, 8, PSD1)   /* PIO spd1 */
+		CreateDwordField(INBF, 12, DSD1) /* DMA spd1 */
+		CreateDwordField(INBF, 16, BFFG) /*buffer flag */
+
+		Store(Match(POTT, MLE, PSD0, MTR, 0, 0), Local0)
+		Divide(Local0, 5, PPMM,) /* Primary PIO master Mode */
+		Store(Match(POTT, MLE, PSD1, MTR, 0, 0), Local1)
+		Divide(Local1, 5, PPSM,) /* Primary PIO slave Mode */
+
+		Store(DerefOf(Index(PORT, Local0)), PPTM) /* Primary PIO Master Timing */
+		Store(DerefOf(Index(PORT, Local1)), PPTS) /* Primary PIO Slave Timing */
+
+		If(And(BFFG, 0x01)) {	/* Drive 0 is under UDMA mode */
+			Store(Match(UDTT, MLE, DSD0, MTR, 0, 0), Local0)
+			Divide(Local0, 7, PDMM,)
+			Or(PDCR, 0x01, PDCR)
+		}
+		Else {
+			If(LNotEqual(DSD0, 0xFFFFFFFF)) {
+				Store(Match(MDTT, MLE, DSD0, MTR, 0, 0), Local0)
+				Store(DerefOf(Index(MDRT, Local0)), PMTM)
+			}
+		}
+
+		If(And(BFFG, 0x04)) {	/* Drive 1 is under UDMA mode */
+			Store(Match(UDTT, MLE, DSD1, MTR, 0, 0), Local0)
+			Divide(Local0, 7, PDSM,)
+			Or(PDCR, 0x02, PDCR)
+		}
+		Else {
+			If(LNotEqual(DSD1, 0xFFFFFFFF)) {
+				Store(Match(MDTT, MLE, DSD1, MTR, 0, 0), Local0)
+				Store(DerefOf(Index(MDRT, Local0)), PMTS)
+			}
+		}
+		/* Return(INBF) */
+	}		/*End Method(_STM) */
+	Device(MST)
+	{
+		Name(_ADR, 0)
+		Method(_GTF, 0, Serialized) {
+			Name(CMBF, Buffer(21) {
+				0x03, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xEF,
+				0x03, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xEF,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF5
+			})
+			CreateByteField(CMBF, 1, POMD)
+			CreateByteField(CMBF, 8, DMMD)
+			CreateByteField(CMBF, 5, CMDA)
+			CreateByteField(CMBF, 12, CMDB)
+			CreateByteField(CMBF, 19, CMDC)
+
+			Store(0xA0, CMDA)
+			Store(0xA0, CMDB)
+			Store(0xA0, CMDC)
+
+			Or(PPMM, 0x08, POMD)
+
+			If(And(PDCR, 0x01)) {
+				Or(PDMM, 0x40, DMMD)
+			}
+			Else {
+				Store(Match
+				      (MDTT, MLE, GTTM(PMTM),
+				       MTR, 0, 0), Local0)
+				If(LLess(Local0, 3)) {
+					Or(0x20, Local0, DMMD)
+				}
+			}
+			Return(CMBF)
+		}
+	}		/* End Device(MST) */
+
+	Device(SLAV)
+	{
+		Name(_ADR, 1)
+		Method(_GTF, 0, Serialized) {
+			Name(CMBF, Buffer(21) {
+				0x03, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xEF,
+				0x03, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xEF,
+				0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF5
+			})
+			CreateByteField(CMBF, 1, POMD)
+			CreateByteField(CMBF, 8, DMMD)
+			CreateByteField(CMBF, 5, CMDA)
+			CreateByteField(CMBF, 12, CMDB)
+			CreateByteField(CMBF, 19, CMDC)
+
+			Store(0xB0, CMDA)
+			Store(0xB0, CMDB)
+			Store(0xB0, CMDC)
+
+			Or(PPSM, 0x08, POMD)
+
+			If(And(PDCR, 0x02)) {
+				Or(PDSM, 0x40, DMMD)
+			}
+			Else {
+				Store(Match
+				      (MDTT, MLE, GTTM(PMTS),
+				       MTR, 0, 0), Local0)
+				If(LLess(Local0, 3)) {
+					Or(0x20, Local0, DMMD)
+				}
+			}
+			Return(CMBF)
+		}
+	}			/* End Device(SLAV) */
+}
diff --git a/src/southbridge/amd/sb700/acpi/sata.asl b/src/southbridge/amd/sb700/acpi/sata.asl
new file mode 100644
index 0000000..46a82b7
--- /dev/null
+++ b/src/southbridge/amd/sb700/acpi/sata.asl
@@ -0,0 +1,133 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
+ *
+ * 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
+ */
+
+Name(STTM, Buffer(20) {
+	0x78, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00,
+	0x78, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00,
+	0x1f, 0x00, 0x00, 0x00
+})
+
+/* Start by clearing the PhyRdyChg bits */
+Method(_INI) {
+	\_GPE._L1F()
+}
+
+Device(PMRY)
+{
+	Name(_ADR, 0)
+	Method(_GTM, 0x0, NotSerialized) {
+		Return(STTM)
+	}
+	Method(_STM, 0x3, NotSerialized) {}
+
+	Device(PMST) {
+		Name(_ADR, 0)
+		Method(_STA,0) {
+			if (LGreater(P0IS,0)) {
+				return (0x0F) /* sata is visible */
+			} else {
+				return  (0x00) /* sata is missing */
+			}
+		}
+	}/* end of PMST */
+
+	Device(PSLA)
+	{
+		Name(_ADR, 1)
+		Method(_STA,0) {
+			if (LGreater(P1IS,0)) {
+				return (0x0F) /* sata is visible */
+			} else {
+				return (0x00) /* sata is missing */
+			}
+		}
+	}	/* end of PSLA */
+}   /* end of PMRY */
+
+
+Device(SEDY)
+{
+	Name(_ADR, 1)		/* IDE Scondary Channel */
+	Method(_GTM, 0x0, NotSerialized) {
+		Return(STTM)
+	}
+	Method(_STM, 0x3, NotSerialized) {}
+
+	Device(SMST)
+	{
+		Name(_ADR, 0)
+		Method(_STA,0) {
+			if (LGreater(P2IS,0)) {
+				return (0x0F) /* sata is visible */
+			} else {
+				return (0x00) /* sata is missing */
+			}
+		}
+	} /* end of SMST */
+
+	Device(SSLA)
+	{
+		Name(_ADR, 1)
+		Method(_STA,0) {
+			if (LGreater(P3IS,0)) {
+				return (0x0F) /* sata is visible */
+			} else {
+				return (0x00) /* sata is missing */
+			}
+		}
+	} /* end of SSLA */
+}   /* end of SEDY */
+
+/* SATA Hot Plug Support */
+Scope(\_GPE) {
+	Method(_L1F,0x0,NotSerialized) {
+		if (\_SB.P0PR) {
+			if (LGreater(\_SB.P0IS,0)) {
+				sleep(32)
+			}
+			Notify(\_SB.PCI0.SAT0.PMRY.PMST, 0x01) /* NOTIFY_DEVICE_CHECK */
+			store(one, \_SB.P0PR)
+		}
+
+		if (\_SB.P1PR) {
+			if (LGreater(\_SB.P1IS,0)) {
+				sleep(32)
+			}
+			Notify(\_SB.PCI0.SAT0.PMRY.PSLA, 0x01) /* NOTIFY_DEVICE_CHECK */
+			store(one, \_SB.P1PR)
+		}
+
+		if (\_SB.P2PR) {
+			if (LGreater(\_SB.P2IS,0)) {
+				sleep(32)
+			}
+			Notify(\_SB.PCI0.SAT0.SEDY.SMST, 0x01) /* NOTIFY_DEVICE_CHECK */
+			store(one, \_SB.P2PR)
+		}
+
+		if (\_SB.P3PR) {
+			if (LGreater(\_SB.P3IS,0)) {
+				sleep(32)
+			}
+			Notify(\_SB.PCI0.SAT0.SEDY.SSLA, 0x01) /* NOTIFY_DEVICE_CHECK */
+			store(one, \_SB.P3PR)
+		}
+	}
+}
diff --git a/src/southbridge/amd/sb700/bootblock.c b/src/southbridge/amd/sb700/bootblock.c
index 67e6434..8f722a8 100644
--- a/src/southbridge/amd/sb700/bootblock.c
+++ b/src/southbridge/amd/sb700/bootblock.c
@@ -1,6 +1,7 @@
 /*
  * This file is part of the coreboot project.
  *
+ * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
  * Copyright (C) 2010 Advanced Micro Devices, Inc.
  *
  * This program is free software; you can redistribute it and/or modify
@@ -35,10 +36,17 @@
 static void sb700_enable_rom(void)
 {
 	u8 reg8;
+	u32 dword;
 	pci_devfn_t dev;
 
 	dev = PCI_DEV(0, 0x14, 3);
 
+	/* The LPC settings below work for SPI flash as well;
+	 * the hardware does not distinguish between LPC and SPI flash ROM
+	 * aside from offering additional side-channel access to SPI flash
+	 * via a separate register-based interface.
+	 */
+
 	/* Decode variable LPC ROM address ranges 1 and 2. */
 	reg8 = pci_io_read_config8(dev, 0x48);
 	reg8 |= (1 << 3) | (1 << 4);
@@ -52,15 +60,41 @@ static void sb700_enable_rom(void)
 
 	/* LPC ROM address range 2: */
 	/*
-	 * Enable LPC ROM range start at:
-	 * 0xfff8(0000): 512KB
-	 * 0xfff0(0000): 1MB
-	 * 0xffe0(0000): 2MB
-	 * 0xffc0(0000): 4MB
-	 */
+	* Enable LPC ROM range start at:
+	* 0xfff8(0000): 512KB
+	* 0xfff0(0000): 1MB
+	* 0xffe0(0000): 2MB
+	* 0xffc0(0000): 4MB
+	* 0xff80(0000): 8MB
+	*/
 	pci_io_write_config16(dev, 0x6c, 0x10000 - (CONFIG_COREBOOT_ROMSIZE_KB >> 6));
 	/* Enable LPC ROM range end at 0xffff(ffff). */
 	pci_io_write_config16(dev, 0x6e, 0xffff);
+
+	/* SB700 LPC Bridge 0x48h.
+	 * Turn on all LPC IO Port decode enables
+	 */
+	dword = pci_io_read_config32(dev, 0x44);
+	dword = 0xffffffff;
+	pci_io_write_config32(dev, 0x44, dword);
+
+	/* SB700 LPC Bridge 0x48h.
+	 * BIT0: Port Enable for SuperIO 0x2E-0x2F
+	 * BIT1: Port Enable for SuperIO 0x4E-0x4F
+	 * BIT4: Port Enable for LPC ROM Address Arrage2 (0x68-0x6C)
+	 * BIT6: Port Enable for RTC IO 0x70-0x73
+	 * BIT21: Port Enable for Port 0x80
+	 */
+	reg8 = pci_io_read_config8(dev, 0x48);
+	reg8 |= (1<<0) | (1<<1) | (1<<4) | (1<<6);
+	pci_io_write_config8(dev, 0x48, reg8);
+
+	/* SB700 LPC Bridge 0x4ah.
+	 * BIT4: Port Enable for Port 0x80
+	 */
+	reg8 = pci_io_read_config8(dev, 0x4a);
+	reg8 |= (1<<4);
+	pci_io_write_config8(dev, 0x4a, reg8);
 }
 
 static void bootblock_southbridge_init(void)
diff --git a/src/southbridge/amd/sb700/early_setup.c b/src/southbridge/amd/sb700/early_setup.c
index d25599e..de3fa97 100644
--- a/src/southbridge/amd/sb700/early_setup.c
+++ b/src/southbridge/amd/sb700/early_setup.c
@@ -2,6 +2,7 @@
  * This file is part of the coreboot project.
  *
  * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
  *
  * 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
@@ -395,6 +396,15 @@ static void sb700_devices_por_init(void)
 	byte |= (1 << 0);
 	pci_write_config8(dev, 0xd2, byte);
 
+	/* set auxiliary smbus iobase and enable controller */
+	pci_write_config32(dev, 0x58, SMBUS_AUX_IO_BASE | 1);
+
+	if (inw(SMBUS_IO_BASE) == 0xFF)
+		printk(BIOS_INFO, "sb700_devices_por_init(): Primary SMBUS controller I/O not found\n");
+
+	if (inw(SMBUS_AUX_IO_BASE) == 0xFF)
+		printk(BIOS_INFO, "sb700_devices_por_init(): Secondary SMBUS controller I/O not found\n");
+
 	/* KB2RstEnable */
 	pci_write_config8(dev, 0x40, 0x44);
 
@@ -439,6 +449,14 @@ static void sb700_devices_por_init(void)
 	/*pci_write_config8(dev, 0x79, 0x4F); */
 	pci_write_config8(dev, 0x78, 0xFF);
 
+	if (IS_ENABLED(CONFIG_SOUTHBRIDGE_AMD_SB700_DISABLE_ISA_DMA)) {
+		printk(BIOS_DEBUG, "sb700_devices_por_init(): Disabling ISA DMA support\n");
+		/* Disable LPC ISA DMA Capability */
+		byte = pci_read_config8(dev, 0x78);
+		byte &= ~(1 << 0);
+		pci_write_config8(dev, 0x78, byte);
+	}
+
 	/* Set smbus iospace enable, I don't know why write 0x04 into reg5 that is reserved */
 	pci_write_config16(dev, 0x4, 0x0407);
 
diff --git a/src/southbridge/amd/sb700/lpc.c b/src/southbridge/amd/sb700/lpc.c
index a39ec18..0cc1e8b 100644
--- a/src/southbridge/amd/sb700/lpc.c
+++ b/src/southbridge/amd/sb700/lpc.c
@@ -2,6 +2,7 @@
  * This file is part of the coreboot project.
  *
  * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
  *
  * 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
@@ -45,6 +46,8 @@ static void lpc_init(device_t dev)
 	u32 dword;
 	device_t sm_dev;
 
+	printk(BIOS_SPEW, "%s\n", __func__);
+
 	/* Enable the LPC Controller */
 	sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
 	dword = pci_read_config32(sm_dev, 0x64);
diff --git a/src/southbridge/amd/sb700/sm.c b/src/southbridge/amd/sb700/sm.c
index 598ebec..71253b5 100644
--- a/src/southbridge/amd/sb700/sm.c
+++ b/src/southbridge/amd/sb700/sm.c
@@ -2,6 +2,7 @@
  * This file is part of the coreboot project.
  *
  * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
  *
  * 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
@@ -62,11 +63,8 @@ static void sm_init(device_t dev)
 	printk(BIOS_INFO, "sm_init().\n");
 
 	rev = get_sb700_revision(dev);
-	ioapic_base = (void *)(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);
+	ioapic_base = (void *)(pci_read_config32(dev, 0x74) & (0xffffffe0));	/* some like mem resource, but does not have enable bit */
+	setup_ioapic(ioapic_base, 0); /* Don't rename IOAPIC ID. */
 
 	/* 2.10 Interrupt Routing/Filtering */
 	dword = pci_read_config8(dev, 0x62);
@@ -132,9 +130,10 @@ static void sm_init(device_t dev)
 	get_option(&on, "power_on_after_fail");
 	byte = pm_ioread(0x74);
 	byte &= ~0x03;
-	if (on) {
-		byte |= 2;
-	}
+	if (on == 1)
+		byte |= 0x1;	/* Force power on */
+	else if (on == 2)
+		byte |= 0x2;	/* Use last power state */
 	byte |= 1 << 2;
 	pm_iowrite(0x74, byte);
 	printk(BIOS_INFO, "set power %s after power fail\n", on ? "on" : "off");
@@ -298,6 +297,10 @@ static void sm_init(device_t dev)
 	byte &= ~(1 << 1);
 	pm_iowrite(0x59, byte);
 
+	/* Enable SCI as irq9. */
+	outb(0x4, 0xC00);
+	outb(0x9, 0xC01);
+
 	printk(BIOS_INFO, "sm_init() end\n");
 
 	/* Enable NbSb virtual channel */
@@ -388,7 +391,7 @@ static void sb700_sm_read_resources(device_t dev)
 	struct resource *res;
 
 	/* Get the normal pci resources of this device */
-	/* pci_dev_read_resources(dev); */
+	pci_dev_read_resources(dev);
 
 	/* apic */
 	res = new_resource(dev, 0x74);
-- 
1.7.9.5