diff --git a/src/include/ehci.h b/src/include/ehci.h
index 5dc2bb3935..4b8c94cd24 100644
--- a/src/include/ehci.h
+++ b/src/include/ehci.h
@@ -23,6 +23,8 @@
 #ifndef EHCI_H
 #define EHCI_H
 
+#define EHCI_BAR_INDEX		0x10
+
 /* EHCI register interface, corresponds to EHCI Revision 0.95 specification */
 
 /* Section 2.2 Host Controller Capability Registers */
diff --git a/src/include/usbdebug.h b/src/include/usbdebug.h
index 54d817afe5..710675f4d4 100644
--- a/src/include/usbdebug.h
+++ b/src/include/usbdebug.h
@@ -41,6 +41,7 @@ void set_ehci_base(unsigned ehci_base);
 void set_ehci_debug(unsigned ehci_deug);
 unsigned get_ehci_debug(void);
 void set_debug_port(unsigned port);
+void early_usbdebug_init(void);
 void usbdebug_ram_tx_byte(unsigned char data);
 void usbdebug_tx_byte(unsigned char data);
 
diff --git a/src/mainboard/amd/dbm690t/romstage.c b/src/mainboard/amd/dbm690t/romstage.c
index f7f40536f4..9635e39fd0 100644
--- a/src/mainboard/amd/dbm690t/romstage.c
+++ b/src/mainboard/amd/dbm690t/romstage.c
@@ -51,10 +51,7 @@
 #include "northbridge/amd/amdk8/reset_test.c"
 #include "superio/ite/it8712f/it8712f_early_serial.c"
 
-#if CONFIG_USBDEBUG
-#include "southbridge/amd/sb600/sb600_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 
 #include "cpu/x86/mtrr/earlymtrr.c"
 #include "cpu/x86/bist.h"
diff --git a/src/mainboard/amd/mahogany/romstage.c b/src/mainboard/amd/mahogany/romstage.c
index 16ea5f204f..702b97965e 100644
--- a/src/mainboard/amd/mahogany/romstage.c
+++ b/src/mainboard/amd/mahogany/romstage.c
@@ -50,11 +50,7 @@
 #include "cpu/x86/lapic/boot_cpu.c"
 #include "northbridge/amd/amdk8/reset_test.c"
 #include "superio/ite/it8718f/it8718f_early_serial.c"
-
-#if CONFIG_USBDEBUG
-#include "southbridge/amd/sb700/sb700_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 
 #include "cpu/x86/mtrr/earlymtrr.c"
 #include "cpu/x86/bist.h"
diff --git a/src/mainboard/amd/mahogany_fam10/romstage.c b/src/mainboard/amd/mahogany_fam10/romstage.c
index d5a907c64e..64e02f49e0 100644
--- a/src/mainboard/amd/mahogany_fam10/romstage.c
+++ b/src/mainboard/amd/mahogany_fam10/romstage.c
@@ -59,11 +59,7 @@
 static int smbus_read_byte(u32 device, u32 address);
 
 #include "superio/ite/it8718f/it8718f_early_serial.c"
-
-#if CONFIG_USBDEBUG
-#include "southbridge/amd/sb700/sb700_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 
 #include "cpu/x86/mtrr/earlymtrr.c"
 #include <cpu/amd/mtrr.h>
diff --git a/src/mainboard/amd/pistachio/romstage.c b/src/mainboard/amd/pistachio/romstage.c
index a3909f4799..51269b1cf6 100644
--- a/src/mainboard/amd/pistachio/romstage.c
+++ b/src/mainboard/amd/pistachio/romstage.c
@@ -45,11 +45,7 @@
 #include "cpu/x86/lapic/boot_cpu.c"
 #include "northbridge/amd/amdk8/reset_test.c"
 #include "superio/ite/it8712f/it8712f_early_serial.c"
-
-#if CONFIG_USBDEBUG
-#include "southbridge/amd/sb600/sb600_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 
 #include "cpu/x86/mtrr/earlymtrr.c"
 #include "cpu/x86/bist.h"
diff --git a/src/mainboard/amd/tilapia_fam10/romstage.c b/src/mainboard/amd/tilapia_fam10/romstage.c
index 1e331fe717..b0da2aec6c 100644
--- a/src/mainboard/amd/tilapia_fam10/romstage.c
+++ b/src/mainboard/amd/tilapia_fam10/romstage.c
@@ -59,11 +59,7 @@
 static int smbus_read_byte(u32 device, u32 address);
 
 #include "superio/ite/it8718f/it8718f_early_serial.c"
-
-#if CONFIG_USBDEBUG
-#include "southbridge/amd/sb700/sb700_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 
 #include "cpu/x86/mtrr/earlymtrr.c"
 #include <cpu/amd/mtrr.h>
diff --git a/src/mainboard/asrock/939a785gmh/romstage.c b/src/mainboard/asrock/939a785gmh/romstage.c
index dac230734b..1a01e5d0f5 100644
--- a/src/mainboard/asrock/939a785gmh/romstage.c
+++ b/src/mainboard/asrock/939a785gmh/romstage.c
@@ -51,11 +51,7 @@
 #include "cpu/x86/lapic/boot_cpu.c"
 #include "northbridge/amd/amdk8/reset_test.c"
 #include "superio/winbond/w83627dhg/w83627dhg_early_serial.c"
-
-#if CONFIG_USBDEBUG
-#include "southbridge/amd/sb700/sb700_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 
 #include "cpu/x86/mtrr/earlymtrr.c"
 #include "cpu/x86/bist.h"
diff --git a/src/mainboard/asus/m4a785-m/romstage.c b/src/mainboard/asus/m4a785-m/romstage.c
index cae04485a6..4d16ab7036 100644
--- a/src/mainboard/asus/m4a785-m/romstage.c
+++ b/src/mainboard/asus/m4a785-m/romstage.c
@@ -59,11 +59,7 @@
 static int smbus_read_byte(u32 device, u32 address);
 
 #include "superio/ite/it8712f/it8712f_early_serial.c"
-
-#if CONFIG_USBDEBUG
-#include "southbridge/amd/sb700/sb700_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 
 #include "cpu/x86/mtrr/earlymtrr.c"
 #include <cpu/amd/mtrr.h>
diff --git a/src/mainboard/getac/p470/romstage.c b/src/mainboard/getac/p470/romstage.c
index bf11cb5227..5416d0cdae 100644
--- a/src/mainboard/getac/p470/romstage.c
+++ b/src/mainboard/getac/p470/romstage.c
@@ -27,6 +27,7 @@
 #include <device/pnp_def.h>
 #include <cpu/x86/lapic.h>
 #include <lib.h>
+#include <usbdebug.h>
 
 #include <pc80/mc146818rtc.h>
 
diff --git a/src/mainboard/gigabyte/ga_2761gxdk/romstage.c b/src/mainboard/gigabyte/ga_2761gxdk/romstage.c
index 7692c08bcf..9e186eba56 100644
--- a/src/mainboard/gigabyte/ga_2761gxdk/romstage.c
+++ b/src/mainboard/gigabyte/ga_2761gxdk/romstage.c
@@ -51,13 +51,11 @@
 #include <pc80/mc146818rtc.h>
 
 #include <console/console.h>
-#if CONFIG_USBDEBUG
-#include "southbridge/sis/sis966/sis966_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 
 #include <cpu/amd/model_fxx_rev.h>
 
+#include "southbridge/sis/sis966/sis966.h"
 #include "southbridge/sis/sis966/sis966_early_smbus.c"
 #include "southbridge/sis/sis966/sis966_enable_rom.c"
 #include "northbridge/amd/amdk8/raminit.h"
diff --git a/src/mainboard/gigabyte/m57sli/romstage.c b/src/mainboard/gigabyte/m57sli/romstage.c
index 59174d7e56..01c989ab25 100644
--- a/src/mainboard/gigabyte/m57sli/romstage.c
+++ b/src/mainboard/gigabyte/m57sli/romstage.c
@@ -49,10 +49,7 @@
 #include <pc80/mc146818rtc.h>
 
 #include <console/console.h>
-#if CONFIG_USBDEBUG
-#include "southbridge/nvidia/mcp55/mcp55_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 
 #include <cpu/amd/model_fxx_rev.h>
 
diff --git a/src/mainboard/gigabyte/ma785gmt/romstage.c b/src/mainboard/gigabyte/ma785gmt/romstage.c
index c97f275027..b32fea8271 100644
--- a/src/mainboard/gigabyte/ma785gmt/romstage.c
+++ b/src/mainboard/gigabyte/ma785gmt/romstage.c
@@ -55,11 +55,7 @@
 static int smbus_read_byte(u32 device, u32 address);
 
 #include "superio/ite/it8718f/it8718f_early_serial.c"
-
-#if CONFIG_USBDEBUG
-#include "southbridge/amd/sb700/sb700_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 
 #include "cpu/x86/mtrr/earlymtrr.c"
 #include <cpu/amd/mtrr.h>
diff --git a/src/mainboard/gigabyte/ma78gm/romstage.c b/src/mainboard/gigabyte/ma78gm/romstage.c
index 9225e2616e..ca39156b35 100644
--- a/src/mainboard/gigabyte/ma78gm/romstage.c
+++ b/src/mainboard/gigabyte/ma78gm/romstage.c
@@ -59,11 +59,7 @@
 static int smbus_read_byte(u32 device, u32 address);
 
 #include "superio/ite/it8718f/it8718f_early_serial.c"
-
-#if CONFIG_USBDEBUG
-#include "southbridge/amd/sb700/sb700_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 
 #include "cpu/x86/mtrr/earlymtrr.c"
 #include <cpu/amd/mtrr.h>
diff --git a/src/mainboard/ibase/mb899/romstage.c b/src/mainboard/ibase/mb899/romstage.c
index cd131705b9..a97b0a1e2e 100644
--- a/src/mainboard/ibase/mb899/romstage.c
+++ b/src/mainboard/ibase/mb899/romstage.c
@@ -33,6 +33,7 @@
 #include <pc80/mc146818rtc.h>
 
 #include <console/console.h>
+#include <usbdebug.h>
 #include <cpu/x86/bist.h>
 
 #include "superio/winbond/w83627ehg/w83627ehg_early_serial.c"
diff --git a/src/mainboard/iei/kino-780am2-fam10/romstage.c b/src/mainboard/iei/kino-780am2-fam10/romstage.c
index d9790b37cd..c623297bbd 100644
--- a/src/mainboard/iei/kino-780am2-fam10/romstage.c
+++ b/src/mainboard/iei/kino-780am2-fam10/romstage.c
@@ -62,11 +62,7 @@
 static int smbus_read_byte(u32 device, u32 address);
 
 #include "superio/fintek/f71859/f71859_early_serial.c"
-
-#if CONFIG_USBDEBUG
-#include "southbridge/amd/sb700/sb700_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 
 #include "cpu/x86/mtrr/earlymtrr.c"
 #include <cpu/amd/mtrr.h>
diff --git a/src/mainboard/intel/d945gclf/romstage.c b/src/mainboard/intel/d945gclf/romstage.c
index 9b7f2deeee..237642b747 100644
--- a/src/mainboard/intel/d945gclf/romstage.c
+++ b/src/mainboard/intel/d945gclf/romstage.c
@@ -33,6 +33,7 @@
 #include <pc80/mc146818rtc.h>
 
 #include <console/console.h>
+#include <usbdebug.h>
 #include <cpu/x86/bist.h>
 
 #include "superio/smsc/lpc47m15x/lpc47m15x_early_serial.c"
diff --git a/src/mainboard/jetway/pa78vm5/romstage.c b/src/mainboard/jetway/pa78vm5/romstage.c
index fc18ba9887..0ccfaccb5c 100644
--- a/src/mainboard/jetway/pa78vm5/romstage.c
+++ b/src/mainboard/jetway/pa78vm5/romstage.c
@@ -66,10 +66,7 @@ static int smbus_read_byte(u32 device, u32 address);
 #define SERIAL_DEV PNP_DEV(0x2e, F71863FG_SP1)
 #endif
 
-#if CONFIG_USBDEBUG
-#include "southbridge/amd/sb700/sb700_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 
 #include "cpu/x86/mtrr/earlymtrr.c"
 #include <cpu/amd/mtrr.h>
diff --git a/src/mainboard/kontron/986lcd-m/romstage.c b/src/mainboard/kontron/986lcd-m/romstage.c
index 201d90378f..f974128604 100644
--- a/src/mainboard/kontron/986lcd-m/romstage.c
+++ b/src/mainboard/kontron/986lcd-m/romstage.c
@@ -27,6 +27,7 @@
 #include <device/pci_def.h>
 #include <device/pnp_def.h>
 #include <cpu/x86/lapic.h>
+#include <usbdebug.h>
 
 #include "superio/winbond/w83627thg/w83627thg.h"
 
diff --git a/src/mainboard/kontron/kt690/romstage.c b/src/mainboard/kontron/kt690/romstage.c
index c756af6d1c..6b65b4db6e 100644
--- a/src/mainboard/kontron/kt690/romstage.c
+++ b/src/mainboard/kontron/kt690/romstage.c
@@ -53,10 +53,7 @@
 #include "northbridge/amd/amdk8/debug.c"
 #include "superio/winbond/w83627dhg/w83627dhg_early_serial.c"
 
-#if CONFIG_USBDEBUG
-#include "southbridge/amd/sb600/sb600_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 
 #include "cpu/x86/mtrr/earlymtrr.c"
 #include "cpu/x86/bist.h"
diff --git a/src/mainboard/msi/ms7260/romstage.c b/src/mainboard/msi/ms7260/romstage.c
index 53a6aae241..762da8ced5 100644
--- a/src/mainboard/msi/ms7260/romstage.c
+++ b/src/mainboard/msi/ms7260/romstage.c
@@ -52,10 +52,7 @@
 #include <pc80/mc146818rtc.h>
 
 #include <console/console.h>
-#if CONFIG_USBDEBUG
-#include "southbridge/nvidia/mcp55/mcp55_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 #include <cpu/amd/model_fxx_rev.h>
 #include "southbridge/nvidia/mcp55/mcp55_early_smbus.c"
 #include "northbridge/amd/amdk8/raminit.h"
diff --git a/src/mainboard/msi/ms9652_fam10/romstage.c b/src/mainboard/msi/ms9652_fam10/romstage.c
index 0bc3836809..a7dcaedb3d 100644
--- a/src/mainboard/msi/ms9652_fam10/romstage.c
+++ b/src/mainboard/msi/ms9652_fam10/romstage.c
@@ -42,10 +42,7 @@
 #include <arch/romcc_io.h>
 #include <cpu/x86/lapic.h>
 #include <console/console.h>
-#if CONFIG_USBDEBUG
-#include "southbridge/nvidia/mcp55/mcp55_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 #include <lib.h>
 
 #include <cpu/amd/model_10xxx_rev.h>
diff --git a/src/mainboard/nvidia/l1_2pvv/romstage.c b/src/mainboard/nvidia/l1_2pvv/romstage.c
index 7917a3db01..dc76e0a32e 100644
--- a/src/mainboard/nvidia/l1_2pvv/romstage.c
+++ b/src/mainboard/nvidia/l1_2pvv/romstage.c
@@ -49,10 +49,7 @@
 #include <pc80/mc146818rtc.h>
 
 #include <console/console.h>
-#if CONFIG_USBDEBUG
-#include "southbridge/nvidia/mcp55/mcp55_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 #include <lib.h>
 
 #include <cpu/amd/model_fxx_rev.h>
diff --git a/src/mainboard/roda/rk886ex/romstage.c b/src/mainboard/roda/rk886ex/romstage.c
index 4942788420..78f041f3a7 100644
--- a/src/mainboard/roda/rk886ex/romstage.c
+++ b/src/mainboard/roda/rk886ex/romstage.c
@@ -33,6 +33,7 @@
 #include <pc80/mc146818rtc.h>
 
 #include <console/console.h>
+#include <usbdebug.h>
 #include <cpu/x86/bist.h>
 
 #include "northbridge/intel/i945/i945.h"
diff --git a/src/mainboard/technexion/tim5690/romstage.c b/src/mainboard/technexion/tim5690/romstage.c
index ddcb2ba474..3291d55c80 100644
--- a/src/mainboard/technexion/tim5690/romstage.c
+++ b/src/mainboard/technexion/tim5690/romstage.c
@@ -51,11 +51,7 @@
 #include "northbridge/amd/amdk8/reset_test.c"
 #include "northbridge/amd/amdk8/debug.c"
 #include "superio/ite/it8712f/it8712f_early_serial.c"
-
-#if CONFIG_USBDEBUG
-#include "southbridge/amd/sb600/sb600_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 
 #include "cpu/x86/mtrr/earlymtrr.c"
 #include "cpu/x86/bist.h"
diff --git a/src/mainboard/technexion/tim8690/romstage.c b/src/mainboard/technexion/tim8690/romstage.c
index 863b8e6f3f..3bf157409c 100644
--- a/src/mainboard/technexion/tim8690/romstage.c
+++ b/src/mainboard/technexion/tim8690/romstage.c
@@ -51,11 +51,7 @@
 #include "northbridge/amd/amdk8/reset_test.c"
 #include "northbridge/amd/amdk8/debug.c"
 #include "superio/ite/it8712f/it8712f_early_serial.c"
-
-#if CONFIG_USBDEBUG
-#include "southbridge/amd/sb600/sb600_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 
 #include "cpu/x86/mtrr/earlymtrr.c"
 #include "cpu/x86/bist.h"
diff --git a/src/mainboard/tyan/s2912/romstage.c b/src/mainboard/tyan/s2912/romstage.c
index 2d3e12643e..c7078bbb34 100644
--- a/src/mainboard/tyan/s2912/romstage.c
+++ b/src/mainboard/tyan/s2912/romstage.c
@@ -49,11 +49,8 @@
 #include <pc80/mc146818rtc.h>
 
 #include <console/console.h>
-#if CONFIG_USBDEBUG
-#include "southbridge/nvidia/mcp55/mcp55_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
 #include <lib.h>
+#include <usbdebug.h>
 
 #include <cpu/amd/model_fxx_rev.h>
 
diff --git a/src/mainboard/tyan/s2912_fam10/romstage.c b/src/mainboard/tyan/s2912_fam10/romstage.c
index b294c7e51c..d287dc4313 100644
--- a/src/mainboard/tyan/s2912_fam10/romstage.c
+++ b/src/mainboard/tyan/s2912_fam10/romstage.c
@@ -42,10 +42,7 @@
 #include <arch/romcc_io.h>
 #include <cpu/x86/lapic.h>
 #include <console/console.h>
-#if CONFIG_USBDEBUG
-#include "southbridge/nvidia/mcp55/mcp55_enable_usbdebug.c"
-#include "pc80/usbdebug_serial.c"
-#endif
+#include <usbdebug.h>
 #include <lib.h>
 
 #include <cpu/amd/model_10xxx_rev.h>
diff --git a/src/pc80/usbdebug_serial.c b/src/pc80/usbdebug_serial.c
index c58dce1294..a330ea6695 100644
--- a/src/pc80/usbdebug_serial.c
+++ b/src/pc80/usbdebug_serial.c
@@ -19,13 +19,15 @@
  */
 
 #include "../lib/usbdebug.c"
+#include <arch/io.h>
+#include <ehci.h>
 
-static void early_usbdebug_init(void)
+void early_usbdebug_init(void)
 {
 	struct ehci_debug_info *dbg_info = (struct ehci_debug_info *)
 	    (CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE - sizeof(struct ehci_debug_info));
 
-	usbdebug_init(EHCI_BAR, EHCI_DEBUG_OFFSET, dbg_info);
+	usbdebug_init(CONFIG_EHCI_BAR, CONFIG_EHCI_DEBUG_OFFSET, dbg_info);
 }
 
 void usbdebug_tx_byte(unsigned char data)
diff --git a/src/southbridge/amd/sb600/Kconfig b/src/southbridge/amd/sb600/Kconfig
index ed4072dc2e..5af6b134e0 100644
--- a/src/southbridge/amd/sb600/Kconfig
+++ b/src/southbridge/amd/sb600/Kconfig
@@ -22,3 +22,11 @@ config SOUTHBRIDGE_AMD_SB600
 	select IOAPIC
 	select HAVE_USBDEBUG
 
+config EHCI_BAR
+	hex
+	default 0xfef00000 if SOUTHBRIDGE_AMD_SB600
+
+config EHCI_DEBUG_OFFSET
+	hex
+	default 0xe0 if SOUTHBRIDGE_AMD_SB600
+
diff --git a/src/southbridge/amd/sb600/Makefile.inc b/src/southbridge/amd/sb600/Makefile.inc
index b13d3de01f..854539b9b3 100644
--- a/src/southbridge/amd/sb600/Makefile.inc
+++ b/src/southbridge/amd/sb600/Makefile.inc
@@ -8,3 +8,4 @@ driver-y += sb600_hda.c
 driver-y += sb600_ac97.c
 driver-y += sb600_pci.c
 ramstage-y += sb600_reset.c
+romstage-y += sb600_enable_usbdebug.c
diff --git a/src/southbridge/amd/sb600/sb600.h b/src/southbridge/amd/sb600/sb600.h
index 629f389973..0ba107acc7 100644
--- a/src/southbridge/amd/sb600/sb600.h
+++ b/src/southbridge/amd/sb600/sb600.h
@@ -40,4 +40,5 @@ void sb600_enable(device_t dev);
 void sb600_lpc_port80(void);
 void sb600_pci_port80(void);
 
+void sb600_enable_usbdebug(unsigned int port);
 #endif /* SB600_H */
diff --git a/src/southbridge/amd/sb600/sb600_enable_usbdebug.c b/src/southbridge/amd/sb600/sb600_enable_usbdebug.c
index 6a150aded0..b4d97b0da2 100644
--- a/src/southbridge/amd/sb600/sb600_enable_usbdebug.c
+++ b/src/southbridge/amd/sb600/sb600_enable_usbdebug.c
@@ -18,12 +18,11 @@
  */
 
 #include <stdint.h>
+#include <arch/io.h>
+#include <arch/romcc_io.h>
 #include <usbdebug.h>
 #include <device/pci_def.h>
-
-#define EHCI_BAR		0xFEF00000	/* EHCI BAR address */
-#define EHCI_BAR_INDEX		0x10		/* TODO: DBUG_PRT[31:29] */
-#define EHCI_DEBUG_OFFSET	0xE0		/* Hardcoded to 0xE0 */
+#include "sb600.h"
 
 /* Required for successful build, but currently empty. */
 void set_debug_port(unsigned int port)
@@ -31,7 +30,7 @@ void set_debug_port(unsigned int port)
 	/* TODO: Allow changing the physical USB port used as Debug Port. */
 }
 
-static void sb600_enable_usbdebug(unsigned int port)
+void sb600_enable_usbdebug(unsigned int port)
 {
 	device_t dev = PCI_DEV(0, 0x13, 5); /* USB EHCI, D19:F5 */
 
@@ -39,7 +38,7 @@ static void sb600_enable_usbdebug(unsigned int port)
 	set_debug_port(port);
 
 	/* Set the EHCI BAR address. */
-	pci_write_config32(dev, EHCI_BAR_INDEX, EHCI_BAR);
+	pci_write_config32(dev, EHCI_BAR_INDEX, CONFIG_EHCI_BAR);
 
 	/* Enable access to the EHCI memory space registers. */
 	pci_write_config8(dev, PCI_COMMAND, PCI_COMMAND_MEMORY);
diff --git a/src/southbridge/amd/sb700/Kconfig b/src/southbridge/amd/sb700/Kconfig
index 5ceb446a82..97768d18e5 100644
--- a/src/southbridge/amd/sb700/Kconfig
+++ b/src/southbridge/amd/sb700/Kconfig
@@ -27,3 +27,11 @@ config SOUTHBRIDGE_AMD_SB700_SKIP_ISA_DMA_INIT
 	default n
 	depends on SOUTHBRIDGE_AMD_SB700
 
+config EHCI_BAR
+	hex
+	default 0xfef00000 if SOUTHBRIDGE_AMD_SB700
+
+config EHCI_DEBUG_OFFSET
+	hex
+	default 0xe0 if SOUTHBRIDGE_AMD_SB700
+
diff --git a/src/southbridge/amd/sb700/Makefile.inc b/src/southbridge/amd/sb700/Makefile.inc
index 8e6868bb17..dd97df31e6 100644
--- a/src/southbridge/amd/sb700/Makefile.inc
+++ b/src/southbridge/amd/sb700/Makefile.inc
@@ -7,3 +7,4 @@ driver-y += sb700_sata.c
 driver-y += sb700_hda.c
 driver-y += sb700_pci.c
 ramstage-y += sb700_reset.c
+romstage-y += sb700_enable_usbdebug.c
diff --git a/src/southbridge/amd/sb700/sb700.h b/src/southbridge/amd/sb700/sb700.h
index d4107a942e..088bba611d 100644
--- a/src/southbridge/amd/sb700/sb700.h
+++ b/src/southbridge/amd/sb700/sb700.h
@@ -59,4 +59,5 @@ void sb700_setup_sata_phys(struct device *dev);
 
 #endif
 
+void sb700_enable_usbdebug(unsigned int port);
 #endif /* SB700_H */
diff --git a/src/southbridge/amd/sb700/sb700_enable_usbdebug.c b/src/southbridge/amd/sb700/sb700_enable_usbdebug.c
index 02d3900047..d74a9bbc9f 100644
--- a/src/southbridge/amd/sb700/sb700_enable_usbdebug.c
+++ b/src/southbridge/amd/sb700/sb700_enable_usbdebug.c
@@ -19,14 +19,13 @@
  */
 
 #include <stdint.h>
+#include <arch/io.h>
+#include <arch/romcc_io.h>
 #include <usbdebug.h>
 #include <device/pci_def.h>
+#include "sb700.h"
 
-#define EHCI_BAR		0xFEF00000	/* EHCI BAR address */
-#define EHCI_BAR_INDEX		0x10		/* TODO: DBUG_PRT[31:29] */
-#define EHCI_DEBUG_OFFSET	0xE0		/* Hardcoded to 0xE0 */
-
-#define EHCI_EOR		(EHCI_BAR + 0x20)
+#define EHCI_EOR		(CONFIG_EHCI_BAR + 0x20)
 #define DEBUGPORT_MISC_CONTROL	(EHCI_EOR + 0x80)
 
 void set_debug_port(unsigned int port)
@@ -46,12 +45,12 @@ void set_debug_port(unsigned int port)
  * This code currently only supports the first one, i.e., USB Debug devices
  * attached to physical USB ports belonging to the first EHCI device.
  */
-static void sb700_enable_usbdebug(unsigned int port)
+void sb700_enable_usbdebug(unsigned int port)
 {
 	device_t dev = PCI_DEV(0, 0x12, 2); /* USB EHCI, D18:F2 */
 
 	/* Set the EHCI BAR address. */
-	pci_write_config32(dev, EHCI_BAR_INDEX, EHCI_BAR);
+	pci_write_config32(dev, EHCI_BAR_INDEX, CONFIG_EHCI_BAR);
 
 	/* Enable access to the EHCI memory space registers. */
 	pci_write_config8(dev, PCI_COMMAND, PCI_COMMAND_MEMORY);
diff --git a/src/southbridge/intel/i82801gx/Kconfig b/src/southbridge/intel/i82801gx/Kconfig
index 556f526735..afee190b2d 100644
--- a/src/southbridge/intel/i82801gx/Kconfig
+++ b/src/southbridge/intel/i82801gx/Kconfig
@@ -24,3 +24,11 @@ config SOUTHBRIDGE_INTEL_I82801GX
 	select HAVE_USBDEBUG
 	select USE_WATCHDOG_ON_BOOT
 
+config EHCI_BAR
+	hex
+	default 0xfef00000 if SOUTHBRIDGE_INTEL_I82801GX
+
+config EHCI_DEBUG_OFFSET
+	hex
+	default 0xa0 if SOUTHBRIDGE_INTEL_I82801GX
+
diff --git a/src/southbridge/intel/i82801gx/i82801gx.h b/src/southbridge/intel/i82801gx/i82801gx.h
index b5a2054526..559c896901 100644
--- a/src/southbridge/intel/i82801gx/i82801gx.h
+++ b/src/southbridge/intel/i82801gx/i82801gx.h
@@ -39,10 +39,13 @@
 #ifndef __ACPI__
 #define DEBUG_PERIODIC_SMIS 0
 
+#if !defined(ASSEMBLY)
 #if !defined(__PRE_RAM__)
 #include "chip.h"
 extern void i82801gx_enable(device_t dev);
 #endif
+void i82801gx_enable_usbdebug(unsigned int port);
+#endif
 
 #define MAINBOARD_POWER_OFF	0
 #define MAINBOARD_POWER_ON	1
diff --git a/src/southbridge/intel/i82801gx/i82801gx_usb_debug.c b/src/southbridge/intel/i82801gx/i82801gx_usb_debug.c
index 464dac2b92..991aa5adaa 100644
--- a/src/southbridge/intel/i82801gx/i82801gx_usb_debug.c
+++ b/src/southbridge/intel/i82801gx/i82801gx_usb_debug.c
@@ -18,12 +18,12 @@
  */
 
 #include <stdint.h>
+#include <arch/io.h>
+#include <arch/romcc_io.h>
+#include <console/console.h>
 #include <usbdebug.h>
 #include <device/pci_def.h>
-
-#define EHCI_BAR		0xFEF00000	/* EHCI BAR address */
-#define EHCI_BAR_INDEX		0x10		/* Hardwired 0x10 (>= ICH4). */
-#define EHCI_DEBUG_OFFSET	0xA0		/* Hardwired 0xa0 (>= ICH5). */
+#include "i82801gx.h"
 
 /* Required for successful build, but currently empty. */
 void set_debug_port(unsigned int port)
@@ -31,20 +31,20 @@ void set_debug_port(unsigned int port)
 	/* Not needed, the ICH* southbridges hardcode physical USB port 1. */
 }
 
-static void i82801gx_enable_usbdebug(unsigned int port)
+void i82801gx_enable_usbdebug(unsigned int port)
 {
 	u32 dbgctl;
 	device_t dev = PCI_DEV(0, 0x1d, 7); /* USB EHCI, D29:F7 */
 
 	/* Set the EHCI BAR address. */
-	pci_write_config32(dev, EHCI_BAR_INDEX, EHCI_BAR);
+	pci_write_config32(dev, EHCI_BAR_INDEX, CONFIG_EHCI_BAR);
 
 	/* Enable access to the EHCI memory space registers. */
 	pci_write_config8(dev, PCI_COMMAND, PCI_COMMAND_MEMORY);
 
 	/* Force ownership of the Debug Port to the EHCI controller. */
 	printk(BIOS_DEBUG, "Enabling OWNER_CNT\n");
-	dbgctl = read32(EHCI_BAR + EHCI_DEBUG_OFFSET);
+	dbgctl = read32(CONFIG_EHCI_BAR + CONFIG_EHCI_DEBUG_OFFSET);
 	dbgctl |= (1 << 30);
-	write32(EHCI_BAR + EHCI_DEBUG_OFFSET, dbgctl);
+	write32(CONFIG_EHCI_BAR + CONFIG_EHCI_DEBUG_OFFSET, dbgctl);
 }
diff --git a/src/southbridge/nvidia/ck804/Kconfig b/src/southbridge/nvidia/ck804/Kconfig
index f0cfae7183..d4a8650708 100644
--- a/src/southbridge/nvidia/ck804/Kconfig
+++ b/src/southbridge/nvidia/ck804/Kconfig
@@ -8,3 +8,11 @@ config ID_SECTION_OFFSET
 	hex
 	default 0x80 if SOUTHBRIDGE_NVIDIA_CK804
 
+config EHCI_BAR
+	hex
+	default 0xfef00000 if SOUTHBRIDGE_NVIDIA_CK804
+
+config EHCI_DEBUG_OFFSET
+	hex
+	default 0x98 if SOUTHBRIDGE_NVIDIA_CK804
+
diff --git a/src/southbridge/nvidia/ck804/Makefile.inc b/src/southbridge/nvidia/ck804/Makefile.inc
index bceec85737..48f7713a8b 100644
--- a/src/southbridge/nvidia/ck804/Makefile.inc
+++ b/src/southbridge/nvidia/ck804/Makefile.inc
@@ -15,5 +15,8 @@ ramstage-y += ck804_reset.c
 
 ramstage-$(CONFIG_GENERATE_ACPI_TABLES) += ck804_fadt.c
 
+romstage-y += ck804_enable_usbdebug.c
+
 chipset_bootblock_inc += $(src)/southbridge/nvidia/ck804/romstrap.inc
 chipset_bootblock_lds += $(src)/southbridge/nvidia/ck804/romstrap.lds
+
diff --git a/src/southbridge/nvidia/ck804/ck804.h b/src/southbridge/nvidia/ck804/ck804.h
index fb1b8d80a0..7285d18d0e 100644
--- a/src/southbridge/nvidia/ck804/ck804.h
+++ b/src/southbridge/nvidia/ck804/ck804.h
@@ -4,5 +4,6 @@
 #include "chip.h"
 
 void ck804_enable(device_t dev);
+void ck804_enable_usbdebug(unsigned int port);
 
 #endif
diff --git a/src/southbridge/nvidia/ck804/ck804_enable_usbdebug.c b/src/southbridge/nvidia/ck804/ck804_enable_usbdebug.c
index f82196329e..3cccded343 100644
--- a/src/southbridge/nvidia/ck804/ck804_enable_usbdebug.c
+++ b/src/southbridge/nvidia/ck804/ck804_enable_usbdebug.c
@@ -22,8 +22,11 @@
  */
 
 #include <stdint.h>
+#include <arch/io.h>
+#include <arch/romcc_io.h>
 #include <usbdebug.h>
 #include <device/pci_def.h>
+#include "ck804.h"
 
 #if CONFIG_HT_CHAIN_END_UNITID_BASE != 0x20
 #define CK804_DEVN_BASE CONFIG_HT_CHAIN_END_UNITID_BASE
@@ -31,10 +34,6 @@
 #define CK804_DEVN_BASE CONFIG_HT_CHAIN_UNITID_BASE
 #endif
 
-#define EHCI_BAR		0xFEF00000	/* EHCI BAR address */
-#define EHCI_BAR_INDEX		0x10
-#define EHCI_DEBUG_OFFSET	0x98
-
 void set_debug_port(unsigned int port)
 {
 	u32 dword;
@@ -47,7 +46,7 @@ void set_debug_port(unsigned int port)
 	pci_write_config32(dev, 0x74, dword);
 }
 
-static void ck804_enable_usbdebug(unsigned int port)
+void ck804_enable_usbdebug(unsigned int port)
 {
 	device_t dev = PCI_DEV(0, CK804_DEVN_BASE + 2, 1); /* USB EHCI */
 
@@ -55,7 +54,7 @@ static void ck804_enable_usbdebug(unsigned int port)
 	set_debug_port(port);
 
 	/* Set the EHCI BAR address. */
-	pci_write_config32(dev, EHCI_BAR_INDEX, EHCI_BAR);
+	pci_write_config32(dev, EHCI_BAR_INDEX, CONFIG_EHCI_BAR);
 
 	/* Enable access to the EHCI memory space registers. */
 	pci_write_config8(dev, PCI_COMMAND, PCI_COMMAND_MEMORY);
diff --git a/src/southbridge/nvidia/mcp55/Kconfig b/src/southbridge/nvidia/mcp55/Kconfig
index 213b1755f9..6084b1ea44 100644
--- a/src/southbridge/nvidia/mcp55/Kconfig
+++ b/src/southbridge/nvidia/mcp55/Kconfig
@@ -6,3 +6,12 @@ config SOUTHBRIDGE_NVIDIA_MCP55
 config ID_SECTION_OFFSET
 	hex
 	default 0x80 if SOUTHBRIDGE_NVIDIA_MCP55
+
+config EHCI_BAR
+	hex
+	default 0xfef00000 if SOUTHBRIDGE_NVIDIA_MCP55
+
+config EHCI_DEBUG_OFFSET
+	hex
+	default 0x98 if SOUTHBRIDGE_NVIDIA_MCP55
+
diff --git a/src/southbridge/nvidia/mcp55/Makefile.inc b/src/southbridge/nvidia/mcp55/Makefile.inc
index 4388ca8e9a..a9dcf7f40f 100644
--- a/src/southbridge/nvidia/mcp55/Makefile.inc
+++ b/src/southbridge/nvidia/mcp55/Makefile.inc
@@ -15,5 +15,7 @@ driver-$(CONFIG_GENERATE_ACPI_TABLES) += mcp55_fadt.c
 
 ramstage-y += mcp55_reset.c
 
+romstage-y += mcp55_enable_usbdebug.c
+
 chipset_bootblock_inc += $(src)/southbridge/nvidia/mcp55/romstrap.inc
 chipset_bootblock_lds += $(src)/southbridge/nvidia/mcp55/romstrap.lds
diff --git a/src/southbridge/nvidia/mcp55/mcp55.h b/src/southbridge/nvidia/mcp55/mcp55.h
index 687232f302..acb291a1d0 100644
--- a/src/southbridge/nvidia/mcp55/mcp55.h
+++ b/src/southbridge/nvidia/mcp55/mcp55.h
@@ -29,4 +29,5 @@ void mcp55_enable(device_t dev);
 #else
 void enable_fid_change_on_sb(unsigned sbbusn, unsigned sbdn);
 #endif
+void mcp55_enable_usbdebug(unsigned int port);
 #endif /* MCP55_H */
diff --git a/src/southbridge/nvidia/mcp55/mcp55_enable_usbdebug.c b/src/southbridge/nvidia/mcp55/mcp55_enable_usbdebug.c
index f1f5c2ab11..e0b293c81a 100644
--- a/src/southbridge/nvidia/mcp55/mcp55_enable_usbdebug.c
+++ b/src/southbridge/nvidia/mcp55/mcp55_enable_usbdebug.c
@@ -22,8 +22,11 @@
  */
 
 #include <stdint.h>
+#include <arch/io.h>
+#include <arch/romcc_io.h>
 #include <usbdebug.h>
 #include <device/pci_def.h>
+#include "mcp55.h"
 
 #if CONFIG_HT_CHAIN_END_UNITID_BASE != 0x20
 #define MCP55_DEVN_BASE CONFIG_HT_CHAIN_END_UNITID_BASE
@@ -31,10 +34,6 @@
 #define MCP55_DEVN_BASE CONFIG_HT_CHAIN_UNITID_BASE
 #endif
 
-#define EHCI_BAR		0xFEF00000	/* EHCI BAR address */
-#define EHCI_BAR_INDEX		0x10
-#define EHCI_DEBUG_OFFSET	0x98
-
 void set_debug_port(unsigned int port)
 {
 	u32 dword;
@@ -47,7 +46,7 @@ void set_debug_port(unsigned int port)
 	pci_write_config32(dev, 0x74, dword);
 }
 
-static void mcp55_enable_usbdebug(unsigned int port)
+void mcp55_enable_usbdebug(unsigned int port)
 {
 	device_t dev = PCI_DEV(0, MCP55_DEVN_BASE + 2, 1); /* USB EHCI */
 
@@ -55,7 +54,7 @@ static void mcp55_enable_usbdebug(unsigned int port)
 	set_debug_port(port);
 
 	/* Set the EHCI BAR address. */
-	pci_write_config32(dev, EHCI_BAR_INDEX, EHCI_BAR);
+	pci_write_config32(dev, EHCI_BAR_INDEX, CONFIG_EHCI_BAR);
 
 	/* Enable access to the EHCI memory space registers. */
 	pci_write_config8(dev, PCI_COMMAND, PCI_COMMAND_MEMORY);
diff --git a/src/southbridge/sis/sis966/Kconfig b/src/southbridge/sis/sis966/Kconfig
index f84f1506fb..bbb5ee971b 100644
--- a/src/southbridge/sis/sis966/Kconfig
+++ b/src/southbridge/sis/sis966/Kconfig
@@ -6,3 +6,11 @@ config SOUTHBRIDGE_SIS_SIS966
 config ID_SECTION_OFFSET
 	hex
 	default 0x80 if SOUTHBRIDGE_SIS_SIS966
+
+config EHCI_BAR
+	hex
+	default 0xfef00000 if SOUTHBRIDGE_SIS_SIS966
+
+config EHCI_DEBUG_OFFSET
+	hex
+	default 0x98 if SOUTHBRIDGE_SIS_SIS966
diff --git a/src/southbridge/sis/sis966/Makefile.inc b/src/southbridge/sis/sis966/Makefile.inc
index c3f000c769..e51c81fa83 100644
--- a/src/southbridge/sis/sis966/Makefile.inc
+++ b/src/southbridge/sis/sis966/Makefile.inc
@@ -9,6 +9,7 @@ driver-y += sis966_sata.c
 driver-y += sis966_pcie.c
 driver-y += sis966_aza.c
 ramstage-y += sis966_reset.c
+romstage-y += sis966_enable_usbdebug.c
 
 chipset_bootblock_inc += $(src)/southbridge/sis/sis966/romstrap.inc
 chipset_bootblock_lds += $(src)/southbridge/sis/sis966/romstrap.lds
diff --git a/src/southbridge/sis/sis966/sis966.h b/src/southbridge/sis/sis966/sis966.h
index ee04a65878..324beef3c9 100644
--- a/src/southbridge/sis/sis966/sis966.h
+++ b/src/southbridge/sis/sis966/sis966.h
@@ -32,5 +32,6 @@
 #include "chip.h"
 
 void sis966_enable(device_t dev);
+void sis966_enable_usbdebug(unsigned int port);
 
 #endif /* SIS966_H */
diff --git a/src/southbridge/sis/sis966/sis966_enable_usbdebug.c b/src/southbridge/sis/sis966/sis966_enable_usbdebug.c
index 64aa7be277..a82e941b3a 100644
--- a/src/southbridge/sis/sis966/sis966_enable_usbdebug.c
+++ b/src/southbridge/sis/sis966/sis966_enable_usbdebug.c
@@ -24,8 +24,11 @@
 /* TODO: Check whether this actually works (might be copy-paste leftover). */
 
 #include <stdint.h>
+#include <arch/io.h>
+#include <arch/romcc_io.h>
 #include <usbdebug.h>
 #include <device/pci_def.h>
+#include "sis966.h"
 
 #if CONFIG_HT_CHAIN_END_UNITID_BASE < CONFIG_HT_CHAIN_UNITID_BASE
 #define SIS966_DEVN_BASE CONFIG_HT_CHAIN_END_UNITID_BASE
@@ -33,10 +36,6 @@
 #define SIS966_DEVN_BASE CONFIG_HT_CHAIN_UNITID_BASE
 #endif
 
-#define EHCI_BAR		0xFEF00000	/* EHCI BAR address */
-#define EHCI_BAR_INDEX		0x10
-#define EHCI_DEBUG_OFFSET	0x98
-
 void set_debug_port(unsigned int port)
 {
 	u32 dword;
@@ -49,7 +48,7 @@ void set_debug_port(unsigned int port)
 	pci_write_config32(dev, 0x74, dword);
 }
 
-static void sis966_enable_usbdebug(unsigned int port)
+void sis966_enable_usbdebug(unsigned int port)
 {
 	device_t dev = PCI_DEV(0, SIS966_DEVN_BASE + 2, 1); /* USB EHCI */
 
@@ -57,7 +56,7 @@ static void sis966_enable_usbdebug(unsigned int port)
 	set_debug_port(port);
 
 	/* Set the EHCI BAR address. */
-	pci_write_config32(dev, EHCI_BAR_INDEX, EHCI_BAR);
+	pci_write_config32(dev, EHCI_BAR_INDEX, CONFIG_EHCI_BAR);
 
 	/* Enable access to the EHCI memory space registers. */
 	pci_write_config8(dev, PCI_COMMAND, PCI_COMMAND_MEMORY);