AMD K8: Move SB_HT_CHAIN_ON_BUS0 default 0

Define the default value under northbridge. The list of boards this
patchset touches will change to use SB_HT_CHAIN_ON_BUS0 with
follow-up patch.

Based on code analysis, these boards already scan system bus
as the first (active) HT chain, so it is placed as bus 0
even when this option was not explicitly selected.

Change-Id: I5a00d6372cb89151940aeee517ea613398825c78
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8353
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>

12 files changed, 4 insertions, 44 deletions

diff --git a/src/mainboard/ibm/e325/Kconfig b/src/mainboard/ibm/e325/Kconfig
index 10b6fde..0400677 100644
--- a/src/mainboard/ibm/e325/Kconfig
+++ b/src/mainboard/ibm/e325/Kconfig
@@ -43,10 +43,6 @@ config MAX_PHYSICAL_CPUS
 	int
 	default 1
 
-config SB_HT_CHAIN_ON_BUS0
-	int
-	default 0
-
 config HT_CHAIN_END_UNITID_BASE
 	hex
 	default 0x20
diff --git a/src/mainboard/ibm/e326/Kconfig b/src/mainboard/ibm/e326/Kconfig
index 005012a..bd2bb26 100644
--- a/src/mainboard/ibm/e326/Kconfig
+++ b/src/mainboard/ibm/e326/Kconfig
@@ -43,10 +43,6 @@ config MAX_PHYSICAL_CPUS
 	int
 	default 2
 
-config SB_HT_CHAIN_ON_BUS0
-	int
-	default 0
-
 config HT_CHAIN_END_UNITID_BASE
 	hex
 	default 0x20
diff --git a/src/mainboard/iwill/dk8s2/Kconfig b/src/mainboard/iwill/dk8s2/Kconfig
index c4de3a1..6b54645 100644
--- a/src/mainboard/iwill/dk8s2/Kconfig
+++ b/src/mainboard/iwill/dk8s2/Kconfig
@@ -37,10 +37,6 @@ config MAX_PHYSICAL_CPUS
 	int
 	default 2
 
-config SB_HT_CHAIN_ON_BUS0
-	int
-	default 0
-
 config HT_CHAIN_END_UNITID_BASE
 	hex
 	default 0x20
diff --git a/src/mainboard/iwill/dk8x/Kconfig b/src/mainboard/iwill/dk8x/Kconfig
index af35bb6..f2660c6 100644
--- a/src/mainboard/iwill/dk8x/Kconfig
+++ b/src/mainboard/iwill/dk8x/Kconfig
@@ -36,10 +36,6 @@ config MAX_PHYSICAL_CPUS
 	int
 	default 2
 
-config SB_HT_CHAIN_ON_BUS0
-	int
-	default 0
-
 config HT_CHAIN_END_UNITID_BASE
 	hex
 	default 0x20
diff --git a/src/mainboard/newisys/khepri/Kconfig b/src/mainboard/newisys/khepri/Kconfig
index 7f618af..f1c2687 100644
--- a/src/mainboard/newisys/khepri/Kconfig
+++ b/src/mainboard/newisys/khepri/Kconfig
@@ -30,10 +30,6 @@ config APIC_ID_OFFSET
 	hex
 	default 0x0
 
-config SB_HT_CHAIN_ON_BUS0
-	int
-	default 0
-
 config MAINBOARD_PART_NUMBER
 	string
 	default "Khepri"
diff --git a/src/mainboard/tyan/s2850/Kconfig b/src/mainboard/tyan/s2850/Kconfig
index e6e3df2..2866b0c 100644
--- a/src/mainboard/tyan/s2850/Kconfig
+++ b/src/mainboard/tyan/s2850/Kconfig
@@ -40,10 +40,6 @@ config HT_CHAIN_END_UNITID_BASE
 	hex
 	default 0x20
 
-config SB_HT_CHAIN_ON_BUS0
-	int
-	default 0
-
 config APIC_ID_OFFSET
 	hex
 	default 0x0
diff --git a/src/mainboard/tyan/s2875/Kconfig b/src/mainboard/tyan/s2875/Kconfig
index 30aa01e..85c3ab4 100644
--- a/src/mainboard/tyan/s2875/Kconfig
+++ b/src/mainboard/tyan/s2875/Kconfig
@@ -42,10 +42,6 @@ config HT_CHAIN_END_UNITID_BASE
 	hex
 	default 0x20
 
-config SB_HT_CHAIN_ON_BUS0
-	int
-	default 0
-
 config APIC_ID_OFFSET
 	hex
 	default 0x0
diff --git a/src/mainboard/tyan/s2880/Kconfig b/src/mainboard/tyan/s2880/Kconfig
index 5186337..62b4e70 100644
--- a/src/mainboard/tyan/s2880/Kconfig
+++ b/src/mainboard/tyan/s2880/Kconfig
@@ -22,10 +22,6 @@ config APIC_ID_OFFSET
 	hex
 	default 0x0
 
-config SB_HT_CHAIN_ON_BUS0
-	int
-	default 0
-
 config MAINBOARD_PART_NUMBER
 	string
 	default "S2880"
diff --git a/src/mainboard/tyan/s2882/Kconfig b/src/mainboard/tyan/s2882/Kconfig
index 646b5a8..bf980d7 100644
--- a/src/mainboard/tyan/s2882/Kconfig
+++ b/src/mainboard/tyan/s2882/Kconfig
@@ -23,10 +23,6 @@ config APIC_ID_OFFSET
 	hex
 	default 0x0
 
-config SB_HT_CHAIN_ON_BUS0
-	int
-	default 0
-
 config MAINBOARD_PART_NUMBER
 	string
 	default "S2882"
diff --git a/src/mainboard/tyan/s4880/Kconfig b/src/mainboard/tyan/s4880/Kconfig
index d4feacb..6c85c6c 100644
--- a/src/mainboard/tyan/s4880/Kconfig
+++ b/src/mainboard/tyan/s4880/Kconfig
@@ -30,10 +30,6 @@ config APIC_ID_OFFSET
 	hex
 	default 0x10
 
-config SB_HT_CHAIN_ON_BUS0
-	int
-	default 0
-
 config MAINBOARD_PART_NUMBER
 	string
 	default "S4880"
diff --git a/src/mainboard/tyan/s4882/Kconfig b/src/mainboard/tyan/s4882/Kconfig
index 2bd3854..7723acf 100644
--- a/src/mainboard/tyan/s4882/Kconfig
+++ b/src/mainboard/tyan/s4882/Kconfig
@@ -30,10 +30,6 @@ config APIC_ID_OFFSET
 	hex
 	default 0x10
 
-config SB_HT_CHAIN_ON_BUS0
-	int
-	default 0
-
 config MAINBOARD_PART_NUMBER
 	string
 	default "S4882"
diff --git a/src/northbridge/amd/amdk8/Kconfig b/src/northbridge/amd/amdk8/Kconfig
index e5161ab..cc0cc66 100644
--- a/src/northbridge/amd/amdk8/Kconfig
+++ b/src/northbridge/amd/amdk8/Kconfig
@@ -64,6 +64,10 @@ config SB_HT_CHAIN_UNITID_OFFSET_ONLY
 	bool
 	default n
 
+config SB_HT_CHAIN_ON_BUS0
+	int
+	default 0
+
 config QRANK_DIMM_SUPPORT
 	bool
 	default n