amdfam10 boards: Drop array bus_sb700

Only bus_sb700[0] is evaluated.

Change-Id: Ie2cbbdebed3ae03da916d02919cd6a5d36f53562
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/30647
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

6 files changed, 8 insertions, 36 deletions

diff --git a/src/mainboard/amd/mahogany_fam10/get_bus_conf.c b/src/mainboard/amd/mahogany_fam10/get_bus_conf.c
index b97556c4b3..88b7bf115e 100644
--- a/src/mainboard/amd/mahogany_fam10/get_bus_conf.c
+++ b/src/mainboard/amd/mahogany_fam10/get_bus_conf.c
@@ -24,7 +24,6 @@
 /* Global variables for MB layouts and these will be shared by irqtable mptable
 * and acpi_tables busnum is default.
 */
-u8 bus_sb700[2];
 u32 apicid_sb700;
 
 /*
@@ -48,7 +47,6 @@ u32 hcdnx[] = {
 void get_bus_conf(void)
 {
 	u32 apicid_base;
-	struct device *dev;
 	int i;
 
 	sysconf.hc_possible_num = ARRAY_SIZE(pci1234x);
@@ -61,17 +59,7 @@ void get_bus_conf(void)
 
 	sysconf.sbdn = (sysconf.hcdn[0] & 0xff);
 
-	for (i = 0; i < 2; i++) {
-		bus_sb700[i] = 0;
-	}
-
-	bus_sb700[0] = (sysconf.pci1234[0] >> 16) & 0xff;
-
-	/* sb700 */
-	dev = dev_find_slot(bus_sb700[0], PCI_DEVFN(0x14, 4));
-	if (dev) {
-		bus_sb700[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
-	}
+	pirq_router_bus = (sysconf.pci1234[0] >> 16) & 0xff;
 
 	/* I/O APICs:   APIC ID Version State   Address */
 	if (IS_ENABLED(CONFIG_LOGICAL_CPUS))
diff --git a/src/mainboard/amd/mahogany_fam10/irq_tables.c b/src/mainboard/amd/mahogany_fam10/irq_tables.c
index 9d4624ff6f..0f7192514e 100644
--- a/src/mainboard/amd/mahogany_fam10/irq_tables.c
+++ b/src/mainboard/amd/mahogany_fam10/irq_tables.c
@@ -40,7 +40,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->rfu = rfu;
 }
 
-extern u8 bus_sb700[2];
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -65,7 +64,7 @@ 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_bus = pirq_router_bus;
 	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
@@ -81,7 +80,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	slot_num = 0;
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_sb700[0], PCI_DEVFN(0x14, 4),
+	write_pirq_info(pirq_info, pirq_router_bus, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/amd/mahogany_fam10/mptable.c b/src/mainboard/amd/mahogany_fam10/mptable.c
index 1fd89cc2de..895b747f2e 100644
--- a/src/mainboard/amd/mahogany_fam10/mptable.c
+++ b/src/mainboard/amd/mahogany_fam10/mptable.c
@@ -20,7 +20,6 @@
 #include <stdint.h>
 #include <cpu/amd/amdfam10_sysconf.h>
 
-extern u8 bus_sb700[2];
 
 extern u32 apicid_sb700;
 
@@ -45,7 +44,7 @@ static void *smp_write_config_table(void *v)
 		u8 byte;
 
 		dev =
-		    dev_find_slot(bus_sb700[0],
+		    dev_find_slot(pirq_router_bus,
 				  PCI_DEVFN(0x14, 0));
 		if (dev) {
 			dword = pci_read_config32(dev, 0x74) & 0xfffffff0;
diff --git a/src/mainboard/amd/tilapia_fam10/get_bus_conf.c b/src/mainboard/amd/tilapia_fam10/get_bus_conf.c
index b97556c4b3..88b7bf115e 100644
--- a/src/mainboard/amd/tilapia_fam10/get_bus_conf.c
+++ b/src/mainboard/amd/tilapia_fam10/get_bus_conf.c
@@ -24,7 +24,6 @@
 /* Global variables for MB layouts and these will be shared by irqtable mptable
 * and acpi_tables busnum is default.
 */
-u8 bus_sb700[2];
 u32 apicid_sb700;
 
 /*
@@ -48,7 +47,6 @@ u32 hcdnx[] = {
 void get_bus_conf(void)
 {
 	u32 apicid_base;
-	struct device *dev;
 	int i;
 
 	sysconf.hc_possible_num = ARRAY_SIZE(pci1234x);
@@ -61,17 +59,7 @@ void get_bus_conf(void)
 
 	sysconf.sbdn = (sysconf.hcdn[0] & 0xff);
 
-	for (i = 0; i < 2; i++) {
-		bus_sb700[i] = 0;
-	}
-
-	bus_sb700[0] = (sysconf.pci1234[0] >> 16) & 0xff;
-
-	/* sb700 */
-	dev = dev_find_slot(bus_sb700[0], PCI_DEVFN(0x14, 4));
-	if (dev) {
-		bus_sb700[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
-	}
+	pirq_router_bus = (sysconf.pci1234[0] >> 16) & 0xff;
 
 	/* I/O APICs:   APIC ID Version State   Address */
 	if (IS_ENABLED(CONFIG_LOGICAL_CPUS))
diff --git a/src/mainboard/amd/tilapia_fam10/irq_tables.c b/src/mainboard/amd/tilapia_fam10/irq_tables.c
index 9d4624ff6f..0f7192514e 100644
--- a/src/mainboard/amd/tilapia_fam10/irq_tables.c
+++ b/src/mainboard/amd/tilapia_fam10/irq_tables.c
@@ -40,7 +40,6 @@ static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
 	pirq_info->rfu = rfu;
 }
 
-extern u8 bus_sb700[2];
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
@@ -65,7 +64,7 @@ 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_bus = pirq_router_bus;
 	pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
 
 	pirq->exclusive_irqs = 0;
@@ -81,7 +80,7 @@ unsigned long write_pirq_routing_table(unsigned long addr)
 	slot_num = 0;
 
 	/* pci bridge */
-	write_pirq_info(pirq_info, bus_sb700[0], PCI_DEVFN(0x14, 4),
+	write_pirq_info(pirq_info, pirq_router_bus, PCI_DEVFN(0x14, 4),
 			0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0,
 			0);
 	pirq_info++;
diff --git a/src/mainboard/amd/tilapia_fam10/mptable.c b/src/mainboard/amd/tilapia_fam10/mptable.c
index 1fd89cc2de..895b747f2e 100644
--- a/src/mainboard/amd/tilapia_fam10/mptable.c
+++ b/src/mainboard/amd/tilapia_fam10/mptable.c
@@ -20,7 +20,6 @@
 #include <stdint.h>
 #include <cpu/amd/amdfam10_sysconf.h>
 
-extern u8 bus_sb700[2];
 
 extern u32 apicid_sb700;
 
@@ -45,7 +44,7 @@ static void *smp_write_config_table(void *v)
 		u8 byte;
 
 		dev =
-		    dev_find_slot(bus_sb700[0],
+		    dev_find_slot(pirq_router_bus,
 				  PCI_DEVFN(0x14, 0));
 		if (dev) {
 			dword = pci_read_config32(dev, 0x74) & 0xfffffff0;