AGESA: Drop offset on PCI device enumeration

Integrated PCI devices in southbridge silicon have static BDFs,
no need to have variables to store the parent bus or an offset
with constant zero.

Change-Id: I37d3794d36b5e5775da9215574ddc199696646d0
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/6333
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

44 files changed, 104 insertions, 395 deletions

diff --git a/src/mainboard/amd/dinar/get_bus_conf.c b/src/mainboard/amd/dinar/get_bus_conf.c
index 3104b73cd4f4..5ab2ddd5b241 100644
--- a/src/mainboard/amd/dinar/get_bus_conf.c
+++ b/src/mainboard/amd/dinar/get_bus_conf.c
@@ -32,25 +32,6 @@
  */
 u8 bus_sb700[2];
 
-/*
- * Here you only need to set value in pci1234 for HT-IO that could be installed or not
- * You may need to preset pci1234 for HTIO board,
- * please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
- */
-u32 pci1234x[] = {
-	0x0000ff0,
-};
-
-/*
- * HT Chain device num, actually it is unit id base of every ht device in chain,
- * assume every chain only have 4 ht device at most
- */
-u32 hcdnx[] = {
-	0x20202020,
-};
-
-u32 sbdn_sb700;
-
 void get_bus_conf(void)
 {
 	device_t dev;
@@ -58,17 +39,14 @@ void get_bus_conf(void)
 
 	printk(BIOS_DEBUG, "Mainboard - Get_bus_conf.c - get_bus_conf - Start.\n");
 
-	sbdn_sb700 = 0;
 
 	for (i = 0; i < ARRAY_SIZE(bus_sb700); i++) {
 		bus_sb700[i] = 0;
 	}
 
 
-	bus_sb700[0] = (pci1234x[0] >> 16) & 0xff;
-
 	/* sb700 */
-	dev = dev_find_slot(bus_sb700[0], PCI_DEVFN(sbdn_sb700 + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 
 
diff --git a/src/mainboard/amd/dinar/irq_tables.c b/src/mainboard/amd/dinar/irq_tables.c
index 865d26442951..8242b4e911a2 100644
--- a/src/mainboard/amd/dinar/irq_tables.c
+++ b/src/mainboard/amd/dinar/irq_tables.c
@@ -43,8 +43,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->slot = slot;
 	pirq_info->rfu = rfu;
 }
-extern u8 bus_sb700[2];
-extern unsigned long sbdn_sb700;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -70,8 +68,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_sb700[0];
-	pirq->rtr_devfn = ((sbdn_sb700 + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -87,7 +85,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_sb700[0], ((sbdn_sb700 + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/amd/dinar/mptable.c b/src/mainboard/amd/dinar/mptable.c
index 398ee86f344d..d239a7e74977 100644
--- a/src/mainboard/amd/dinar/mptable.c
+++ b/src/mainboard/amd/dinar/mptable.c
@@ -29,8 +29,6 @@
 #include <cpu/amd/amdfam15.h>
 
 extern u8 bus_sb700[2];
-extern u32 sbdn_sb700;
-
 
 static void *smp_write_config_table(void *v)
 {
@@ -60,8 +58,7 @@ static void *smp_write_config_table(void *v)
 		apicid_sb700 = CONFIG_MAX_CPUS + 1;
 	apicid_rd890 = apicid_sb700 + 1;
 
-	//bus_sb700[0], TODO: why bus_sb700[0] use same value of bus_rd890[0] assigned by get_pci1234(), instead of 0.
-	dev = dev_find_slot(0, PCI_DEVFN(sbdn_sb700 + 0x14, 0));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
 	if (dev) {
 		/* Set sb700 IOAPIC ID */
 		dword = pci_read_config32(dev, 0x74) & 0xfffffff0;
diff --git a/src/mainboard/amd/inagua/get_bus_conf.c b/src/mainboard/amd/inagua/get_bus_conf.c
index c68879102286..c39decfed7fd 100644
--- a/src/mainboard/amd/inagua/get_bus_conf.c
+++ b/src/mainboard/amd/inagua/get_bus_conf.c
@@ -33,17 +33,6 @@
 u8 bus_sb800[6];
 u32 apicid_sb800;
 
-/*
- * Here you only need to set value in pci1234 for HT-IO that could be installed or not
- * You may need to preset pci1234 for HTIO board,
- * please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
- */
-u32 pci1234x[] = {
-	0x0000ff0,
-};
-
-u32 sbdn_sb800;
-
 void get_bus_conf(void)
 {
 	u32 apicid_base;
@@ -52,23 +41,20 @@ void get_bus_conf(void)
 	int i;
 
 
-	sbdn_sb800 = 0;
 
 	memset(bus_sb800, 0, sizeof(bus_sb800));
 
 
-	//  bus_sb800[0] = (sysconf.pci1234[0] >> 16) & 0xff;
-	bus_sb800[0] = (pci1234x[0] >> 16) & 0xff;
 
 	/* sb800 */
-	dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 	if (dev) {
 		bus_sb800[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 	}
 
 	for (i = 0; i < 4; i++) {
-		dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, i));
+		dev = dev_find_slot(0, PCI_DEVFN(0x14, i));
 		if (dev) {
 			bus_sb800[2 + i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 		}
diff --git a/src/mainboard/amd/inagua/irq_tables.c b/src/mainboard/amd/inagua/irq_tables.c
index 98d68d3736a4..305988b9c52b 100644
--- a/src/mainboard/amd/inagua/irq_tables.c
+++ b/src/mainboard/amd/inagua/irq_tables.c
@@ -44,8 +44,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->slot = slot;
 	pirq_info->rfu = rfu;
 }
-extern u8 bus_sb800[6];
-extern unsigned long sbdn_sb800;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -71,8 +69,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_sb800[0];
-	pirq->rtr_devfn = ((sbdn_sb800 + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -88,7 +86,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_sb800[0], ((sbdn_sb800 + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/amd/olivehill/get_bus_conf.c b/src/mainboard/amd/olivehill/get_bus_conf.c
index 508a73cfba2f..1dda59394313 100644
--- a/src/mainboard/amd/olivehill/get_bus_conf.c
+++ b/src/mainboard/amd/olivehill/get_bus_conf.c
@@ -35,17 +35,6 @@
 u8 bus_yangtze[6];
 u32 apicid_yangtze;
 
-/*
- * Here you only need to set value in pci1234 for HT-IO that could be installed or not
- * You may need to preset pci1234 for HTIO board,
- * please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
- */
-u32 pci1234x[] = {
-	0x0000ff0,
-};
-
-u32 sbdn_yangtze;
-
 
 void get_bus_conf(void)
 {
@@ -66,23 +55,20 @@ void get_bus_conf(void)
 	value &= ~(1 << 11);
 	pci_write_config32(dev, 0x60, value);
 
-	sbdn_yangtze = 0;
 
 	memset(bus_yangtze, 0, sizeof(bus_yangtze));
 
 
-	//  bus_yangtze[0] = (sysconf.pci1234[0] >> 16) & 0xff;
-	bus_yangtze[0] = (pci1234x[0] >> 16) & 0xff;
 
 	/* yangtze */
-	dev = dev_find_slot(bus_yangtze[0], PCI_DEVFN(sbdn_yangtze + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 	if (dev) {
 		bus_yangtze[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 	}
 
 	for (i = 0; i < 4; i++) {
-		dev = dev_find_slot(bus_yangtze[0], PCI_DEVFN(sbdn_yangtze + 0x14, i));
+		dev = dev_find_slot(0, PCI_DEVFN(0x14, i));
 		if (dev) {
 			bus_yangtze[2 + i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 		}
diff --git a/src/mainboard/amd/olivehill/irq_tables.c b/src/mainboard/amd/olivehill/irq_tables.c
index 8dbea45ed45a..22ed1ab0a83e 100644
--- a/src/mainboard/amd/olivehill/irq_tables.c
+++ b/src/mainboard/amd/olivehill/irq_tables.c
@@ -43,8 +43,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->rfu = rfu;
 }
 
-extern u8 bus_yangtze[6];
-extern unsigned long sbdn_yangtze;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -69,8 +67,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_yangtze[0];
-	pirq->rtr_devfn = ((sbdn_yangtze + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -85,7 +83,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	slot_num = 0;
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_yangtze[0], ((sbdn_yangtze + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/amd/parmer/get_bus_conf.c b/src/mainboard/amd/parmer/get_bus_conf.c
index 490e3c200d6f..8dcd4e559360 100644
--- a/src/mainboard/amd/parmer/get_bus_conf.c
+++ b/src/mainboard/amd/parmer/get_bus_conf.c
@@ -35,17 +35,6 @@
 u8 bus_hudson[6];
 u32 apicid_hudson;
 
-/*
- * Here you only need to set value in pci1234 for HT-IO that could be installed or not
- * You may need to preset pci1234 for HTIO board,
- * please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
- */
-u32 pci1234x[] = {
-	0x0000ff0,
-};
-
-u32 sbdn_hudson;
-
 
 void get_bus_conf(void)
 {
@@ -56,23 +45,21 @@ void get_bus_conf(void)
 
 
 
-	sbdn_hudson = 0;
 
 	memset(bus_hudson, 0, sizeof(bus_hudson));
 
 
 
-	bus_hudson[0] = (pci1234x[0] >> 16) & 0xff;
 
 	/* Hudson */
-	dev = dev_find_slot(bus_hudson[0], PCI_DEVFN(sbdn_hudson + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 	if (dev) {
 		bus_hudson[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 	}
 
 	for (i = 0; i < 4; i++) {
-		dev = dev_find_slot(bus_hudson[0], PCI_DEVFN(sbdn_hudson + 0x14, i));
+		dev = dev_find_slot(0, PCI_DEVFN(0x14, i));
 		if (dev) {
 			bus_hudson[2 + i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 		}
diff --git a/src/mainboard/amd/parmer/irq_tables.c b/src/mainboard/amd/parmer/irq_tables.c
index 19f800743fb7..013941ca564f 100644
--- a/src/mainboard/amd/parmer/irq_tables.c
+++ b/src/mainboard/amd/parmer/irq_tables.c
@@ -43,8 +43,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->rfu = rfu;
 }
 
-extern u8 bus_hudson[6];
-extern unsigned long sbdn_hudson;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -69,8 +67,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_hudson[0];
-	pirq->rtr_devfn = ((sbdn_hudson + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -85,7 +83,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	slot_num = 0;
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_hudson[0], ((sbdn_hudson + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/amd/persimmon/get_bus_conf.c b/src/mainboard/amd/persimmon/get_bus_conf.c
index 412744c4633e..9434429f5a5a 100644
--- a/src/mainboard/amd/persimmon/get_bus_conf.c
+++ b/src/mainboard/amd/persimmon/get_bus_conf.c
@@ -35,16 +35,6 @@ u8 bus_sb800[6];
 u32 apicid_sb800;
 u32 apicver_sb800;
 
-/*
-* Here you only need to set value in pci1234 for HT-IO that could be installed or not
-* You may need to preset pci1234 for HTIO board,
-* please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
-*/
-u32 pci1234x[] = {
-	0x0000ff0,
-};
-
-u32 sbdn_sb800;
 
 void get_bus_conf(void)
 {
@@ -54,22 +44,19 @@ void get_bus_conf(void)
 	int i;
 
 
-	sbdn_sb800 = 0;
 
 	memset(bus_sb800, 0, sizeof(bus_sb800));
 
-//	bus_sb800[0] = (sysconf.pci1234[0] >> 16) & 0xff;
-	bus_sb800[0] = (pci1234x[0] >> 16) & 0xff;
 
 	/* sb800 */
-	dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 	if (dev) {
 		bus_sb800[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 	}
 
 	for (i = 0; i < 4; i++) {
-		dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, i));
+		dev = dev_find_slot(0, PCI_DEVFN(0x14, i));
 		if (dev) {
 			bus_sb800[2 + i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 		}
diff --git a/src/mainboard/amd/persimmon/irq_tables.c b/src/mainboard/amd/persimmon/irq_tables.c
index 840e7b1bb53a..12a64a8bcd99 100644
--- a/src/mainboard/amd/persimmon/irq_tables.c
+++ b/src/mainboard/amd/persimmon/irq_tables.c
@@ -44,8 +44,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->slot = slot;
 	pirq_info->rfu = rfu;
 }
-extern u8 bus_sb800[6];
-extern unsigned long sbdn_sb800;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -71,8 +69,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_sb800[0];
-	pirq->rtr_devfn = ((sbdn_sb800 + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -88,7 +86,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_sb800[0], ((sbdn_sb800 + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/amd/south_station/get_bus_conf.c b/src/mainboard/amd/south_station/get_bus_conf.c
index f221a4591f4e..53c7953f3cf2 100644
--- a/src/mainboard/amd/south_station/get_bus_conf.c
+++ b/src/mainboard/amd/south_station/get_bus_conf.c
@@ -33,16 +33,6 @@
 u8 bus_sb800[6];
 u32 apicid_sb800;
 
-/*
-* Here you only need to set value in pci1234 for HT-IO that could be installed or not
-* You may need to preset pci1234 for HTIO board,
-* please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
-*/
-u32 pci1234x[] = {
-  0x0000ff0,
-};
-
-u32 sbdn_sb800;
 
 void get_bus_conf(void)
 {
@@ -52,16 +42,13 @@ void get_bus_conf(void)
   int i;
 
 
-  sbdn_sb800 = 0;
 
   memset(bus_sb800, 0, sizeof(bus_sb800));
 
 
-//  bus_sb800[0] = (sysconf.pci1234[0] >> 16) & 0xff;
-  bus_sb800[0] = (pci1234x[0] >> 16) & 0xff;
 
   /* sb800 */
-  dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, 4));
+  dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 
 
@@ -70,7 +57,7 @@ void get_bus_conf(void)
   }
 
   for (i = 0; i < 4; i++) {
-    dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, i));
+    dev = dev_find_slot(0, PCI_DEVFN(0x14, i));
     if (dev) {
       bus_sb800[2 + i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
     }
diff --git a/src/mainboard/amd/south_station/irq_tables.c b/src/mainboard/amd/south_station/irq_tables.c
index 840e7b1bb53a..12a64a8bcd99 100644
--- a/src/mainboard/amd/south_station/irq_tables.c
+++ b/src/mainboard/amd/south_station/irq_tables.c
@@ -44,8 +44,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->slot = slot;
 	pirq_info->rfu = rfu;
 }
-extern u8 bus_sb800[6];
-extern unsigned long sbdn_sb800;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -71,8 +69,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_sb800[0];
-	pirq->rtr_devfn = ((sbdn_sb800 + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -88,7 +86,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_sb800[0], ((sbdn_sb800 + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/amd/thatcher/get_bus_conf.c b/src/mainboard/amd/thatcher/get_bus_conf.c
index b7d6d23d4aa1..c2dbacd1f46c 100644
--- a/src/mainboard/amd/thatcher/get_bus_conf.c
+++ b/src/mainboard/amd/thatcher/get_bus_conf.c
@@ -35,17 +35,6 @@
 u8 bus_hudson[6];
 u32 apicid_hudson;
 
-/*
- * Here you only need to set value in pci1234 for HT-IO that could be installed or not
- * You may need to preset pci1234 for HTIO board,
- * please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
- */
-u32 pci1234x[] = {
-	0x0000ff0,
-};
-
-u32 sbdn_hudson;
-
 
 void get_bus_conf(void)
 {
@@ -54,22 +43,20 @@ void get_bus_conf(void)
 	device_t dev;
 	int i;
 
-	sbdn_hudson = 0;
 
 	memset(bus_hudson, 0, sizeof(bus_hudson));
 
 
-	bus_hudson[0] = (pci1234x[0] >> 16) & 0xff;
 
 	/* Hudson */
-	dev = dev_find_slot(bus_hudson[0], PCI_DEVFN(sbdn_hudson + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 	if (dev) {
 		bus_hudson[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 	}
 
 	for (i = 0; i < 4; i++) {
-		dev = dev_find_slot(bus_hudson[0], PCI_DEVFN(sbdn_hudson + 0x14, i));
+		dev = dev_find_slot(0, PCI_DEVFN(0x14, i));
 		if (dev) {
 			bus_hudson[2 + i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 		}
diff --git a/src/mainboard/amd/thatcher/irq_tables.c b/src/mainboard/amd/thatcher/irq_tables.c
index 19f800743fb7..013941ca564f 100644
--- a/src/mainboard/amd/thatcher/irq_tables.c
+++ b/src/mainboard/amd/thatcher/irq_tables.c
@@ -43,8 +43,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->rfu = rfu;
 }
 
-extern u8 bus_hudson[6];
-extern unsigned long sbdn_hudson;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -69,8 +67,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_hudson[0];
-	pirq->rtr_devfn = ((sbdn_hudson + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -85,7 +83,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	slot_num = 0;
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_hudson[0], ((sbdn_hudson + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/amd/torpedo/get_bus_conf.c b/src/mainboard/amd/torpedo/get_bus_conf.c
index 3f8f50ed99d2..b88e3fbeb139 100644
--- a/src/mainboard/amd/torpedo/get_bus_conf.c
+++ b/src/mainboard/amd/torpedo/get_bus_conf.c
@@ -31,26 +31,6 @@
 */
 u8 bus_sb900[6];
 
-/*
-* Here you only need to set value in pci1234 for HT-IO that could be installed or not
-* You may need to preset pci1234 for HTIO board,
-* please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
-*/
-u32 pci1234x[] = {
-	0x0000ff0,
-};
-
-/*
-* HT Chain device num, actually it is unit id base of every ht device in chain,
-* assume every chain only have 4 ht device at most
-*/
-u32 hcdnx[] = {
-	0x20202020,
-};
-
-
-u32 sbdn_sb900;
-
 void get_bus_conf(void)
 {
 	device_t dev;
@@ -58,23 +38,21 @@ void get_bus_conf(void)
 
 	printk(BIOS_DEBUG, "Mainboard - %s - %s - Start.\n", __FILE__, __func__);
 
-	sbdn_sb900 = 0;
 
 	memset(bus_sb900, 0, sizeof(bus_sb900));
 
 
-	bus_sb900[0] = (pci1234x[0] >> 16) & 0xff;
 
 	/* sb900 */
-	dev = dev_find_slot(bus_sb900[0], PCI_DEVFN(sbdn_sb900 + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 	if (dev) {
 		bus_sb900[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 	}
 
 	for (i = 0; i < 4; i++) {
-		dev = dev_find_slot(bus_sb900[0],
-				  PCI_DEVFN(sbdn_sb900 + 0x14, i));
+		dev = dev_find_slot(0,
+				  PCI_DEVFN(0x14, i));
 		if (dev) {
 			bus_sb900[2 + i] =
 			    pci_read_config8(dev, PCI_SECONDARY_BUS);
diff --git a/src/mainboard/amd/torpedo/irq_tables.c b/src/mainboard/amd/torpedo/irq_tables.c
index f47d9dc4ff95..c501125d06b0 100644
--- a/src/mainboard/amd/torpedo/irq_tables.c
+++ b/src/mainboard/amd/torpedo/irq_tables.c
@@ -45,8 +45,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->slot = slot;
 	pirq_info->rfu = rfu;
 }
-extern u8 bus_sb900[6];
-extern unsigned long sbdn_sb900;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -72,8 +70,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_sb900[0];
-	pirq->rtr_devfn = ((sbdn_sb900 + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -89,7 +87,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_sb900[0], ((sbdn_sb900 + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/amd/union_station/get_bus_conf.c b/src/mainboard/amd/union_station/get_bus_conf.c
index 0b55a2ac79d0..52b5d884a545 100644
--- a/src/mainboard/amd/union_station/get_bus_conf.c
+++ b/src/mainboard/amd/union_station/get_bus_conf.c
@@ -33,16 +33,6 @@
 u8 bus_sb800[6];
 u32 apicid_sb800;
 
-/*
-* Here you only need to set value in pci1234 for HT-IO that could be installed or not
-* You may need to preset pci1234 for HTIO board,
-* please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
-*/
-u32 pci1234x[] = {
-  0x0000ff0,
-};
-
-u32 sbdn_sb800;
 
 void get_bus_conf(void)
 {
@@ -52,18 +42,15 @@ void get_bus_conf(void)
   int i;
 
 
-  sbdn_sb800 = 0;
 
   memset(bus_sb800, 0, sizeof(bus_sb800));
 
 
 
 
-//  bus_sb800[0] = (sysconf.pci1234[0] >> 16) & 0xff;
-  bus_sb800[0] = (pci1234x[0] >> 16) & 0xff;
 
   /* sb800 */
-  dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, 4));
+  dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 
 
@@ -72,7 +59,7 @@ void get_bus_conf(void)
   }
 
   for (i = 0; i < 4; i++) {
-    dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, i));
+    dev = dev_find_slot(0, PCI_DEVFN(0x14, i));
     if (dev) {
       bus_sb800[2 + i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
     }
diff --git a/src/mainboard/amd/union_station/irq_tables.c b/src/mainboard/amd/union_station/irq_tables.c
index 840e7b1bb53a..12a64a8bcd99 100644
--- a/src/mainboard/amd/union_station/irq_tables.c
+++ b/src/mainboard/amd/union_station/irq_tables.c
@@ -44,8 +44,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->slot = slot;
 	pirq_info->rfu = rfu;
 }
-extern u8 bus_sb800[6];
-extern unsigned long sbdn_sb800;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -71,8 +69,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_sb800[0];
-	pirq->rtr_devfn = ((sbdn_sb800 + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -88,7 +86,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_sb800[0], ((sbdn_sb800 + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/asrock/e350m1/get_bus_conf.c b/src/mainboard/asrock/e350m1/get_bus_conf.c
index 255358836bcd..f2c8056df332 100644
--- a/src/mainboard/asrock/e350m1/get_bus_conf.c
+++ b/src/mainboard/asrock/e350m1/get_bus_conf.c
@@ -33,16 +33,6 @@
 u8 bus_sb800[6];
 u32 apicid_sb800;
 
-/*
-* Here you only need to set value in pci1234 for HT-IO that could be installed or not
-* You may need to preset pci1234 for HTIO board,
-* please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
-*/
-u32 pci1234x[] = {
-  0x0000ff0,
-};
-
-u32 sbdn_sb800;
 
 void get_bus_conf(void)
 {
@@ -52,22 +42,19 @@ void get_bus_conf(void)
   int i;
 
 
-  sbdn_sb800 = 0;
 
   memset(bus_sb800, 0, sizeof(bus_sb800));
 
-//  bus_sb800[0] = (sysconf.pci1234[0] >> 16) & 0xff;
-  bus_sb800[0] = (pci1234x[0] >> 16) & 0xff;
 
   /* sb800 */
-  dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, 4));
+  dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
   if (dev) {
     bus_sb800[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
   }
 
   for (i = 0; i < 4; i++) {
-    dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, i));
+    dev = dev_find_slot(0, PCI_DEVFN(0x14, i));
     if (dev) {
       bus_sb800[2 + i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
     }
diff --git a/src/mainboard/asrock/e350m1/irq_tables.c b/src/mainboard/asrock/e350m1/irq_tables.c
index 840e7b1bb53a..12a64a8bcd99 100644
--- a/src/mainboard/asrock/e350m1/irq_tables.c
+++ b/src/mainboard/asrock/e350m1/irq_tables.c
@@ -44,8 +44,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->slot = slot;
 	pirq_info->rfu = rfu;
 }
-extern u8 bus_sb800[6];
-extern unsigned long sbdn_sb800;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -71,8 +69,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_sb800[0];
-	pirq->rtr_devfn = ((sbdn_sb800 + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -88,7 +86,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_sb800[0], ((sbdn_sb800 + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/asrock/imb-a180/get_bus_conf.c b/src/mainboard/asrock/imb-a180/get_bus_conf.c
index 8610e6599900..17ff8a58c984 100644
--- a/src/mainboard/asrock/imb-a180/get_bus_conf.c
+++ b/src/mainboard/asrock/imb-a180/get_bus_conf.c
@@ -32,16 +32,7 @@
 u8 bus_yangtze[6];
 u32 apicid_yangtze;
 
-/*
- * Here you only need to set value in pci1234 for HT-IO that could be installed or not
- * You may need to preset pci1234 for HTIO board,
- * please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
- */
-u32 pci1234x[] = {
-	0x0000ff0,
-};
 
-u32 sbdn_yangtze;
 
 void get_bus_conf(void)
 {
@@ -61,23 +52,20 @@ void get_bus_conf(void)
 	value &= ~(1 << 11);
 	pci_write_config32(dev, 0x60, value);
 
-	sbdn_yangtze = 0;
 
 	memset(bus_yangtze, 0, sizeof(bus_yangtze));
 
 
-	//  bus_yangtze[0] = (sysconf.pci1234[0] >> 16) & 0xff;
-	bus_yangtze[0] = (pci1234x[0] >> 16) & 0xff;
 
 	/* yangtze */
-	dev = dev_find_slot(bus_yangtze[0], PCI_DEVFN(sbdn_yangtze + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 	if (dev) {
 		bus_yangtze[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 	}
 
 	for (i = 0; i < 4; i++) {
-		dev = dev_find_slot(bus_yangtze[0], PCI_DEVFN(sbdn_yangtze + 0x14, i));
+		dev = dev_find_slot(0, PCI_DEVFN(0x14, i));
 		if (dev) {
 			bus_yangtze[2 + i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 		}
diff --git a/src/mainboard/asrock/imb-a180/irq_tables.c b/src/mainboard/asrock/imb-a180/irq_tables.c
index 29dc99913a21..c1c25baf02c3 100644
--- a/src/mainboard/asrock/imb-a180/irq_tables.c
+++ b/src/mainboard/asrock/imb-a180/irq_tables.c
@@ -43,8 +43,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->rfu = rfu;
 }
 
-extern u8 bus_yangtze[6];
-extern unsigned long sbdn_yangtze;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -69,8 +67,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_yangtze[0];
-	pirq->rtr_devfn = ((sbdn_yangtze + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -85,7 +83,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	slot_num = 0;
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_yangtze[0], ((sbdn_yangtze + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/asus/f2a85-m/get_bus_conf.c b/src/mainboard/asus/f2a85-m/get_bus_conf.c
index 389ab8f3686a..fe8253ee03b8 100644
--- a/src/mainboard/asus/f2a85-m/get_bus_conf.c
+++ b/src/mainboard/asus/f2a85-m/get_bus_conf.c
@@ -33,16 +33,7 @@
 u8 bus_hudson[6];
 u32 apicid_hudson;
 
-/*
- * Here you only need to set value in pci1234 for HT-IO that could be installed or not
- * You may need to preset pci1234 for HTIO board,
- * please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
- */
-u32 pci1234x[] = {
-	0x0000ff0,
-};
 
-u32 sbdn_hudson;
 
 void get_bus_conf(void)
 {
@@ -51,23 +42,21 @@ void get_bus_conf(void)
 	device_t dev;
 	int i;
 
-	sbdn_hudson = 0;
 
 	memset(bus_hudson, 0, sizeof(bus_hudson));
 
 
 
-	bus_hudson[0] = (pci1234x[0] >> 16) & 0xff;
 
 	/* Hudson */
-	dev = dev_find_slot(bus_hudson[0], PCI_DEVFN(sbdn_hudson + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 	if (dev) {
 		bus_hudson[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 	}
 
 	for (i = 0; i < 4; i++) {
-		dev = dev_find_slot(bus_hudson[0], PCI_DEVFN(sbdn_hudson + 0x14, i));
+		dev = dev_find_slot(0, PCI_DEVFN(0x14, i));
 		if (dev) {
 			bus_hudson[2 + i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 		}
diff --git a/src/mainboard/asus/f2a85-m/irq_tables.c b/src/mainboard/asus/f2a85-m/irq_tables.c
index 8fb6ff35b2ae..0bab5c9ca58d 100644
--- a/src/mainboard/asus/f2a85-m/irq_tables.c
+++ b/src/mainboard/asus/f2a85-m/irq_tables.c
@@ -20,6 +20,7 @@
 #include <arch/pirq_routing.h>
 #include <console/console.h>
 #include <cpu/amd/amdfam15.h>
+#include <device/pci_def.h>
 #include <stdint.h>
 #include <string.h>
 
@@ -42,8 +43,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->rfu = rfu;
 }
 
-extern u8 bus_hudson[6];
-extern unsigned long sbdn_hudson;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -68,8 +67,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_hudson[0];
-	pirq->rtr_devfn = ((sbdn_hudson + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -84,7 +83,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	slot_num = 0;
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_hudson[0], ((sbdn_hudson + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/gizmosphere/gizmo/get_bus_conf.c b/src/mainboard/gizmosphere/gizmo/get_bus_conf.c
index 646c543dbad5..2cc2c0c30f6d 100755
--- a/src/mainboard/gizmosphere/gizmo/get_bus_conf.c
+++ b/src/mainboard/gizmosphere/gizmo/get_bus_conf.c
@@ -34,17 +34,6 @@
 u8 bus_sb800[6];
 u32 apicid_sb800;
 
-/*
-* Here you only need to set value in pci1234 for HT-IO that could be installed or not
-* You may need to preset pci1234 for HTIO board,
-* please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
-*/
-u32 pci1234x[] = {
-	0x0000ff0,
-};
-
-u32 sbdn_sb800;
-
 
 void get_bus_conf(void)
 {
@@ -53,24 +42,21 @@ void get_bus_conf(void)
 	device_t dev;
 	int i;
 
-	sbdn_sb800 = 0;
 
 	memset(bus_sb800, 0, sizeof(bus_sb800));
 
 
 
-//	bus_sb800[0] = (sysconf.pci1234[0] >> 16) & 0xff;
-	bus_sb800[0] = (pci1234x[0] >> 16) & 0xff;
 
 	/* sb800 */
-	dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 	if (dev) {
 		bus_sb800[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 	}
 
 	for (i = 0; i < 4; i++) {
-		dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, i));
+		dev = dev_find_slot(0, PCI_DEVFN(0x14, i));
 		if (dev) {
 			bus_sb800[2 + i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 		}
diff --git a/src/mainboard/gizmosphere/gizmo/irq_tables.c b/src/mainboard/gizmosphere/gizmo/irq_tables.c
index 5ce2be932d74..bb335685621d 100755
--- a/src/mainboard/gizmosphere/gizmo/irq_tables.c
+++ b/src/mainboard/gizmosphere/gizmo/irq_tables.c
@@ -45,8 +45,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->slot = slot;
 	pirq_info->rfu = rfu;
 }
-extern u8 bus_sb800[6];
-extern unsigned long sbdn_sb800;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -72,8 +70,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_sb800[0];
-	pirq->rtr_devfn = ((sbdn_sb800 + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -89,7 +87,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_sb800[0], ((sbdn_sb800 + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/hp/pavilion_m6_1035dx/get_bus_conf.c b/src/mainboard/hp/pavilion_m6_1035dx/get_bus_conf.c
index bd5026d13633..ef4eeb883e2d 100644
--- a/src/mainboard/hp/pavilion_m6_1035dx/get_bus_conf.c
+++ b/src/mainboard/hp/pavilion_m6_1035dx/get_bus_conf.c
@@ -34,17 +34,6 @@
 u8 bus_hudson[6];
 u32 apicid_hudson;
 
-/*
- * Here you only need to set value in pci1234 for HT-IO that could be installed or not
- * You may need to preset pci1234 for HTIO board,
- * please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
- */
-u32 pci1234x[] = {
-	0x0000ff0,
-};
-
-u32 sbdn_hudson;
-
 
 void get_bus_conf(void)
 {
@@ -53,21 +42,19 @@ void get_bus_conf(void)
 	device_t dev;
 	int i;
 
-	sbdn_hudson = 0;
 
 	memset(bus_hudson, 0, sizeof(bus_hudson));
 
-	bus_hudson[0] = (pci1234x[0] >> 16) & 0xff;
 
 	/* Hudson */
-	dev = dev_find_slot(bus_hudson[0], PCI_DEVFN(sbdn_hudson + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 	if (dev) {
 		bus_hudson[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 	}
 
 	for (i = 0; i < 4; i++) {
-		dev = dev_find_slot(bus_hudson[0], PCI_DEVFN(sbdn_hudson + 0x14, i));
+		dev = dev_find_slot(0, PCI_DEVFN(0x14, i));
 		if (dev) {
 			bus_hudson[2 + i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 		}
diff --git a/src/mainboard/hp/pavilion_m6_1035dx/irq_tables.c b/src/mainboard/hp/pavilion_m6_1035dx/irq_tables.c
index b0f2a1520788..42364e959ac7 100644
--- a/src/mainboard/hp/pavilion_m6_1035dx/irq_tables.c
+++ b/src/mainboard/hp/pavilion_m6_1035dx/irq_tables.c
@@ -20,6 +20,7 @@
 #include <arch/pirq_routing.h>
 #include <cpu/amd/amdfam15.h>
 #include <console/console.h>
+#include <device/pci_def.h>
 #include <string.h>
 #include <stdint.h>
 
@@ -42,8 +43,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->rfu = rfu;
 }
 
-extern u8 bus_hudson[6];
-extern unsigned long sbdn_hudson;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -68,8 +67,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_hudson[0];
-	pirq->rtr_devfn = ((sbdn_hudson + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -84,7 +83,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	slot_num = 0;
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_hudson[0], ((sbdn_hudson + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/jetway/nf81-t56n-lf/get_bus_conf.c b/src/mainboard/jetway/nf81-t56n-lf/get_bus_conf.c
index 8bc5ddf8119b..cc3ffbbeb622 100644
--- a/src/mainboard/jetway/nf81-t56n-lf/get_bus_conf.c
+++ b/src/mainboard/jetway/nf81-t56n-lf/get_bus_conf.c
@@ -36,17 +36,6 @@ u8 bus_sb800[6];
 u32 apicid_sb800;
 u32 apicver_sb800;
 
-/**
- * Here you only need to set value in pci1234 for HT-IO that could be
- * installed or not. You may need to preset pci1234 for HTIO board,
- * please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
- */
-u32 pci1234x[] = {
-	0x0000ff0,
-};
-
-u32 sbdn_sb800;
-
 
 void get_bus_conf(void)
 {
@@ -55,22 +44,19 @@ void get_bus_conf(void)
 	device_t dev;
 	int i;
 
-	sbdn_sb800 = 0;
 
 	memset(bus_sb800, 0, sizeof(bus_sb800));
 
-//	bus_sb800[0] = (sysconf.pci1234[0] >> 16) & 0xff;
-	bus_sb800[0] = (pci1234x[0] >> 16) & 0xff;
 
 	/* sb800 */
-	dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 	if (dev) {
 		bus_sb800[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 	}
 
 	for (i = 0; i < 4; i++) {
-		dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, i));
+		dev = dev_find_slot(0, PCI_DEVFN(0x14, i));
 		if (dev) {
 			bus_sb800[2 + i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 		}
diff --git a/src/mainboard/jetway/nf81-t56n-lf/irq_tables.c b/src/mainboard/jetway/nf81-t56n-lf/irq_tables.c
index 5205a46289cf..94a69f9b7c11 100644
--- a/src/mainboard/jetway/nf81-t56n-lf/irq_tables.c
+++ b/src/mainboard/jetway/nf81-t56n-lf/irq_tables.c
@@ -21,6 +21,7 @@
 #include <arch/pirq_routing.h>
 #include <console/console.h>
 #include <cpu/amd/amdfam14.h>
+#include <device/pci_def.h>
 #include <string.h>
 #include <stdint.h>
 
@@ -43,8 +44,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->slot = slot;
 	pirq_info->rfu = rfu;
 }
-extern u8 bus_sb800[6];
-extern unsigned long sbdn_sb800;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -70,8 +69,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_sb800[0];
-	pirq->rtr_devfn = ((sbdn_sb800 + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -86,7 +85,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	slot_num = 0;
 
 	/* PCI Bridge */
-	write_pirq_info(pirq_info, bus_sb800[0], ((sbdn_sb800 + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/lippert/frontrunner-af/get_bus_conf.c b/src/mainboard/lippert/frontrunner-af/get_bus_conf.c
index e736e5485465..42270af68ac2 100644
--- a/src/mainboard/lippert/frontrunner-af/get_bus_conf.c
+++ b/src/mainboard/lippert/frontrunner-af/get_bus_conf.c
@@ -33,17 +33,6 @@
 u8 bus_sb800[6];
 u32 apicid_sb800;
 
-/*
-* Here you only need to set value in pci1234 for HT-IO that could be installed or not
-* You may need to preset pci1234 for HTIO board,
-* please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
-*/
-u32 pci1234x[] = {
-	0x0000ff0,
-};
-
-u32 sbdn_sb800;
-
 
 void get_bus_conf(void)
 {
@@ -52,23 +41,20 @@ void get_bus_conf(void)
 	device_t dev;
 	int i;
 
-	sbdn_sb800 = 0;
 
 	memset(bus_sb800, 0, sizeof(bus_sb800));
 
 
-//	bus_sb800[0] = (sysconf.pci1234[0] >> 16) & 0xff;
-	bus_sb800[0] = (pci1234x[0] >> 16) & 0xff;
 
 	/* sb800 */
-	dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 	if (dev) {
 		bus_sb800[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 	}
 
 	for (i = 0; i < 4; i++) {
-		dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, i));
+		dev = dev_find_slot(0, PCI_DEVFN(0x14, i));
 		if (dev) {
 			bus_sb800[2 + i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 		}
diff --git a/src/mainboard/lippert/frontrunner-af/irq_tables.c b/src/mainboard/lippert/frontrunner-af/irq_tables.c
index 840e7b1bb53a..12a64a8bcd99 100644
--- a/src/mainboard/lippert/frontrunner-af/irq_tables.c
+++ b/src/mainboard/lippert/frontrunner-af/irq_tables.c
@@ -44,8 +44,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->slot = slot;
 	pirq_info->rfu = rfu;
 }
-extern u8 bus_sb800[6];
-extern unsigned long sbdn_sb800;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -71,8 +69,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_sb800[0];
-	pirq->rtr_devfn = ((sbdn_sb800 + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -88,7 +86,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_sb800[0], ((sbdn_sb800 + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/lippert/toucan-af/get_bus_conf.c b/src/mainboard/lippert/toucan-af/get_bus_conf.c
index 20dc3aea120d..eb40c541ad3d 100644
--- a/src/mainboard/lippert/toucan-af/get_bus_conf.c
+++ b/src/mainboard/lippert/toucan-af/get_bus_conf.c
@@ -33,16 +33,6 @@
 u8 bus_sb800[6];
 u32 apicid_sb800;
 
-/*
-* Here you only need to set value in pci1234 for HT-IO that could be installed or not
-* You may need to preset pci1234 for HTIO board,
-* please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
-*/
-u32 pci1234x[] = {
-	0x0000ff0,
-};
-
-u32 sbdn_sb800;
 
 void get_bus_conf(void)
 {
@@ -51,22 +41,19 @@ void get_bus_conf(void)
 	device_t dev;
 	int i;
 
-	sbdn_sb800 = 0;
 
 	memset(bus_sb800, 0, sizeof(bus_sb800));
 
-//	bus_sb800[0] = (sysconf.pci1234[0] >> 16) & 0xff;
-	bus_sb800[0] = (pci1234x[0] >> 16) & 0xff;
 
 	/* sb800 */
-	dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 	if (dev) {
 		bus_sb800[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 	}
 
 	for (i = 0; i < 4; i++) {
-		dev = dev_find_slot(bus_sb800[0], PCI_DEVFN(sbdn_sb800 + 0x14, i));
+		dev = dev_find_slot(0, PCI_DEVFN(0x14, i));
 		if (dev) {
 			bus_sb800[2 + i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 		}
diff --git a/src/mainboard/lippert/toucan-af/irq_tables.c b/src/mainboard/lippert/toucan-af/irq_tables.c
index 840e7b1bb53a..12a64a8bcd99 100644
--- a/src/mainboard/lippert/toucan-af/irq_tables.c
+++ b/src/mainboard/lippert/toucan-af/irq_tables.c
@@ -44,8 +44,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->slot = slot;
 	pirq_info->rfu = rfu;
 }
-extern u8 bus_sb800[6];
-extern unsigned long sbdn_sb800;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -71,8 +69,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_sb800[0];
-	pirq->rtr_devfn = ((sbdn_sb800 + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -88,7 +86,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_sb800[0], ((sbdn_sb800 + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/supermicro/h8qgi/get_bus_conf.c b/src/mainboard/supermicro/h8qgi/get_bus_conf.c
index 549334e793a6..8531e697a94c 100644
--- a/src/mainboard/supermicro/h8qgi/get_bus_conf.c
+++ b/src/mainboard/supermicro/h8qgi/get_bus_conf.c
@@ -31,14 +31,12 @@
  * and acpi_tables busnum is default.
  */
 u8 bus_sp5100[2];
-u32 sbdn_sp5100;
 
 void get_bus_conf(void)
 {
 	device_t dev;
 	int i;
 
-	sbdn_sp5100 = 0;
 
 	for (i = 0; i < ARRAY_SIZE(bus_sp5100); i++) {
 		bus_sp5100[i] = 0;
@@ -47,7 +45,7 @@ void get_bus_conf(void)
 	bus_sp5100[0] = 0;
 
 	/* sp5100 */
-	dev = dev_find_slot(bus_sp5100[0], PCI_DEVFN(sbdn_sp5100 + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 	if (dev) {
 		bus_sp5100[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
diff --git a/src/mainboard/supermicro/h8qgi/irq_tables.c b/src/mainboard/supermicro/h8qgi/irq_tables.c
index 6b1e2260079b..0af225c9dd90 100644
--- a/src/mainboard/supermicro/h8qgi/irq_tables.c
+++ b/src/mainboard/supermicro/h8qgi/irq_tables.c
@@ -44,8 +44,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->slot = slot;
 	pirq_info->rfu = rfu;
 }
-extern u8 bus_sp5100[2];
-extern unsigned long sbdn_sp5100;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -71,8 +69,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_sp5100[0];
-	pirq->rtr_devfn = ((sbdn_sp5100 + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -88,7 +86,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_sp5100[0], ((sbdn_sp5100 + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/supermicro/h8qgi/mptable.c b/src/mainboard/supermicro/h8qgi/mptable.c
index 754ed549bfca..37932127117a 100644
--- a/src/mainboard/supermicro/h8qgi/mptable.c
+++ b/src/mainboard/supermicro/h8qgi/mptable.c
@@ -29,7 +29,6 @@
 #include <cpu/amd/amdfam10_sysconf.h>
 
 extern u8 bus_sp5100[2];
-extern u32 sbdn_sp5100;
 
 static void *smp_write_config_table(void *v)
 {
@@ -59,7 +58,7 @@ static void *smp_write_config_table(void *v)
 		apicid_sp5100 = CONFIG_MAX_CPUS + 1;
 	apicid_sr5650 = apicid_sp5100 + 1;
 
-	dev = dev_find_slot(0, PCI_DEVFN(sbdn_sp5100 + 0x14, 0));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
 	if (dev) {
 		/* Set SP5100 IOAPIC ID */
 		dword = pci_read_config32(dev, 0x74) & 0xfffffff0;
diff --git a/src/mainboard/supermicro/h8scm/get_bus_conf.c b/src/mainboard/supermicro/h8scm/get_bus_conf.c
index 28c4bf7924e8..46ed054a2668 100644
--- a/src/mainboard/supermicro/h8scm/get_bus_conf.c
+++ b/src/mainboard/supermicro/h8scm/get_bus_conf.c
@@ -31,14 +31,12 @@
  * and acpi_tables busnum is default.
  */
 u8 bus_sp5100[2];
-u32 sbdn_sp5100;
 
 void get_bus_conf(void)
 {
 	device_t dev;
 	int i;
 
-	sbdn_sp5100 = 0;
 
 	for (i = 0; i < 0; i++) {
 		bus_sp5100[i] = 0;
@@ -47,7 +45,7 @@ void get_bus_conf(void)
 	bus_sp5100[0] = 0;
 
 	/* sp5100 */
-	dev = dev_find_slot(bus_sp5100[0], PCI_DEVFN(sbdn_sp5100 + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 	if (dev) {
 		bus_sp5100[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
diff --git a/src/mainboard/supermicro/h8scm/irq_tables.c b/src/mainboard/supermicro/h8scm/irq_tables.c
index 9770e6d84830..8f727563a701 100644
--- a/src/mainboard/supermicro/h8scm/irq_tables.c
+++ b/src/mainboard/supermicro/h8scm/irq_tables.c
@@ -44,8 +44,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->slot = slot;
 	pirq_info->rfu = rfu;
 }
-extern u8 bus_sp5100[2];
-extern unsigned long sbdn_sp5100;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -71,8 +69,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_sp5100[0];
-	pirq->rtr_devfn = ((sbdn_sp5100 + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -87,7 +85,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	slot_num = 0;
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_sp5100[0], ((sbdn_sp5100 + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/supermicro/h8scm/mptable.c b/src/mainboard/supermicro/h8scm/mptable.c
index 754ed549bfca..37932127117a 100644
--- a/src/mainboard/supermicro/h8scm/mptable.c
+++ b/src/mainboard/supermicro/h8scm/mptable.c
@@ -29,7 +29,6 @@
 #include <cpu/amd/amdfam10_sysconf.h>
 
 extern u8 bus_sp5100[2];
-extern u32 sbdn_sp5100;
 
 static void *smp_write_config_table(void *v)
 {
@@ -59,7 +58,7 @@ static void *smp_write_config_table(void *v)
 		apicid_sp5100 = CONFIG_MAX_CPUS + 1;
 	apicid_sr5650 = apicid_sp5100 + 1;
 
-	dev = dev_find_slot(0, PCI_DEVFN(sbdn_sp5100 + 0x14, 0));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
 	if (dev) {
 		/* Set SP5100 IOAPIC ID */
 		dword = pci_read_config32(dev, 0x74) & 0xfffffff0;
diff --git a/src/mainboard/tyan/s8226/get_bus_conf.c b/src/mainboard/tyan/s8226/get_bus_conf.c
index 7a6876b880df..087c04206af7 100644
--- a/src/mainboard/tyan/s8226/get_bus_conf.c
+++ b/src/mainboard/tyan/s8226/get_bus_conf.c
@@ -30,7 +30,6 @@
  * and acpi_tables busnum is default.
  */
 u8 bus_sp5100[2];
-u32 sbdn_sp5100;
 
 void get_bus_conf(void);
 
@@ -39,7 +38,6 @@ void get_bus_conf(void)
 	device_t dev;
 	int i;
 
-	sbdn_sp5100 = 0;
 
 	for (i = 0; i < 0; i++) {
 		bus_sp5100[i] = 0;
@@ -48,7 +46,7 @@ void get_bus_conf(void)
 	bus_sp5100[0] = 0;
 
 	/* sp5100 */
-	dev = dev_find_slot(bus_sp5100[0], PCI_DEVFN(sbdn_sp5100 + 0x14, 4));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 4));
 
 	if (dev) {
 		bus_sp5100[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
diff --git a/src/mainboard/tyan/s8226/irq_tables.c b/src/mainboard/tyan/s8226/irq_tables.c
index 6b1e2260079b..0af225c9dd90 100644
--- a/src/mainboard/tyan/s8226/irq_tables.c
+++ b/src/mainboard/tyan/s8226/irq_tables.c
@@ -44,8 +44,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->slot = slot;
 	pirq_info->rfu = rfu;
 }
-extern u8 bus_sp5100[2];
-extern unsigned long sbdn_sp5100;
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -71,8 +69,8 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	pirq->signature = PIRQ_SIGNATURE;
 	pirq->version = PIRQ_VERSION;
 
-	pirq->rtr_bus = bus_sp5100[0];
-	pirq->rtr_devfn = ((sbdn_sp5100 + 0x14) << 3) | 4;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
 
@@ -88,7 +86,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_sp5100[0], ((sbdn_sp5100 + 0x14) << 3) | 4,
+	write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/tyan/s8226/mptable.c b/src/mainboard/tyan/s8226/mptable.c
index 6a12f2b821bc..37932127117a 100644
--- a/src/mainboard/tyan/s8226/mptable.c
+++ b/src/mainboard/tyan/s8226/mptable.c
@@ -29,8 +29,6 @@
 #include <cpu/amd/amdfam10_sysconf.h>
 
 extern u8 bus_sp5100[2];
-extern u32 sbdn_sr5650;
-extern u32 sbdn_sp5100;
 
 static void *smp_write_config_table(void *v)
 {
@@ -60,7 +58,7 @@ static void *smp_write_config_table(void *v)
 		apicid_sp5100 = CONFIG_MAX_CPUS + 1;
 	apicid_sr5650 = apicid_sp5100 + 1;
 
-	dev = dev_find_slot(0, PCI_DEVFN(sbdn_sp5100 + 0x14, 0));
+	dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
 	if (dev) {
 		/* Set SP5100 IOAPIC ID */
 		dword = pci_read_config32(dev, 0x74) & 0xfffffff0;