diff --git a/src/include/cpu/intel/car.h b/src/include/cpu/intel/car.h
new file mode 100644
index 0000000000..dc89ffc204
--- /dev/null
+++ b/src/include/cpu/intel/car.h
@@ -0,0 +1,7 @@
+#ifndef _CPU_INTEL_CAR_H
+#define _CPU_INTEL_CAR_H
+
+/* std signature of entry-point to romstage.c */
+void main(unsigned long bist);
+
+#endif /* _CPU_INTEL_CAR_H */
diff --git a/src/mainboard/a-trend/atc-6220/romstage.c b/src/mainboard/a-trend/atc-6220/romstage.c
index 22d3270f78..3c3f9eb32f 100644
--- a/src/mainboard/a-trend/atc-6220/romstage.c
+++ b/src/mainboard/a-trend/atc-6220/romstage.c
@@ -42,6 +42,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/a-trend/atc-6240/romstage.c b/src/mainboard/a-trend/atc-6240/romstage.c
index 41d5d2aa0d..a153730a85 100644
--- a/src/mainboard/a-trend/atc-6240/romstage.c
+++ b/src/mainboard/a-trend/atc-6240/romstage.c
@@ -41,6 +41,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/aaeon/pfm-540i_revb/romstage.c b/src/mainboard/aaeon/pfm-540i_revb/romstage.c
index f80ef959e1..7f78dce1a6 100644
--- a/src/mainboard/aaeon/pfm-540i_revb/romstage.c
+++ b/src/mainboard/aaeon/pfm-540i_revb/romstage.c
@@ -54,6 +54,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 #include "cpu/amd/geode_lx/syspreinit.c"
 #include "cpu/amd/geode_lx/msrinit.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	static const struct mem_controller memctrl[] = {
diff --git a/src/mainboard/abit/be6-ii_v2_0/romstage.c b/src/mainboard/abit/be6-ii_v2_0/romstage.c
index 510c8ce1b5..a17e68ff67 100644
--- a/src/mainboard/abit/be6-ii_v2_0/romstage.c
+++ b/src/mainboard/abit/be6-ii_v2_0/romstage.c
@@ -43,6 +43,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/advantech/pcm-5820/romstage.c b/src/mainboard/advantech/pcm-5820/romstage.c
index b710aada53..51a713c8a4 100644
--- a/src/mainboard/advantech/pcm-5820/romstage.c
+++ b/src/mainboard/advantech/pcm-5820/romstage.c
@@ -30,6 +30,7 @@
 
 #define SERIAL_DEV PNP_DEV(0x3f0, W83977F_SP1)
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	w83977f_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/amd/db800/romstage.c b/src/mainboard/amd/db800/romstage.c
index 564380e711..f645812794 100644
--- a/src/mainboard/amd/db800/romstage.c
+++ b/src/mainboard/amd/db800/romstage.c
@@ -49,6 +49,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 #include "cpu/amd/geode_lx/syspreinit.c"
 #include "cpu/amd/geode_lx/msrinit.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 
diff --git a/src/mainboard/amd/norwich/romstage.c b/src/mainboard/amd/norwich/romstage.c
index 9322508958..2daef93fcc 100644
--- a/src/mainboard/amd/norwich/romstage.c
+++ b/src/mainboard/amd/norwich/romstage.c
@@ -45,6 +45,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 #include "cpu/amd/geode_lx/syspreinit.c"
 #include "cpu/amd/geode_lx/msrinit.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 
diff --git a/src/mainboard/amd/rumba/romstage.c b/src/mainboard/amd/rumba/romstage.c
index c5a3fc3a7c..9158aadd81 100644
--- a/src/mainboard/amd/rumba/romstage.c
+++ b/src/mainboard/amd/rumba/romstage.c
@@ -31,6 +31,7 @@ static inline int spd_read_byte(unsigned device, unsigned address)
 #include "cpu/amd/geode_gx2/syspreinit.c"
 #include "cpu/amd/geode_lx/msrinit.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	static const struct mem_controller memctrl [] = {
diff --git a/src/mainboard/aopen/dxplplusu/romstage.c b/src/mainboard/aopen/dxplplusu/romstage.c
index 94546b160a..7ef8a47b63 100644
--- a/src/mainboard/aopen/dxplplusu/romstage.c
+++ b/src/mainboard/aopen/dxplplusu/romstage.c
@@ -39,6 +39,7 @@ int spd_read_byte(unsigned device, unsigned address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	static const struct mem_controller memctrl[] = {
diff --git a/src/mainboard/artecgroup/dbe61/romstage.c b/src/mainboard/artecgroup/dbe61/romstage.c
index 7276b30bbc..23e537fc44 100644
--- a/src/mainboard/artecgroup/dbe61/romstage.c
+++ b/src/mainboard/artecgroup/dbe61/romstage.c
@@ -57,6 +57,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 #include "cpu/amd/geode_lx/syspreinit.c"
 #include "cpu/amd/geode_lx/msrinit.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 
diff --git a/src/mainboard/asi/mb_5blgp/romstage.c b/src/mainboard/asi/mb_5blgp/romstage.c
index d6613875ea..c7f3090f23 100644
--- a/src/mainboard/asi/mb_5blgp/romstage.c
+++ b/src/mainboard/asi/mb_5blgp/romstage.c
@@ -30,6 +30,7 @@
 
 #define SERIAL_DEV PNP_DEV(0x2e, PC87351_SP1)
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	pc87351_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/asi/mb_5blmp/romstage.c b/src/mainboard/asi/mb_5blmp/romstage.c
index e8befe4ba1..6c18d8f3c1 100644
--- a/src/mainboard/asi/mb_5blmp/romstage.c
+++ b/src/mainboard/asi/mb_5blmp/romstage.c
@@ -31,6 +31,7 @@
 
 #define SERIAL_DEV PNP_DEV(0x2e, PC87351_SP1)
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	pc87351_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/asus/dsbf/romstage.c b/src/mainboard/asus/dsbf/romstage.c
index e013371a6b..6db086693a 100644
--- a/src/mainboard/asus/dsbf/romstage.c
+++ b/src/mainboard/asus/dsbf/romstage.c
@@ -110,6 +110,7 @@ int mainboard_set_fbd_clock(int speed)
 	}
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	if (bist == 0)
diff --git a/src/mainboard/asus/mew-am/romstage.c b/src/mainboard/asus/mew-am/romstage.c
index 2392ac2cae..9ea6c04960 100644
--- a/src/mainboard/asus/mew-am/romstage.c
+++ b/src/mainboard/asus/mew-am/romstage.c
@@ -34,6 +34,7 @@
 
 #define SERIAL_DEV PNP_DEV(0x2e, SMSCSUPERIO_SP1)
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	smscsuperio_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/asus/mew-vm/romstage.c b/src/mainboard/asus/mew-vm/romstage.c
index 5962aab3e6..87f8d658a1 100644
--- a/src/mainboard/asus/mew-vm/romstage.c
+++ b/src/mainboard/asus/mew-vm/romstage.c
@@ -34,6 +34,7 @@
 
 #define SERIAL_DEV PNP_DEV(0x2e, LPC47B272_SP1)
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	lpc47b272_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/asus/p2b-d/romstage.c b/src/mainboard/asus/p2b-d/romstage.c
index b03dfd5828..4faae202b2 100644
--- a/src/mainboard/asus/p2b-d/romstage.c
+++ b/src/mainboard/asus/p2b-d/romstage.c
@@ -41,6 +41,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/asus/p2b-ds/romstage.c b/src/mainboard/asus/p2b-ds/romstage.c
index b4dbe32969..070b002ba1 100644
--- a/src/mainboard/asus/p2b-ds/romstage.c
+++ b/src/mainboard/asus/p2b-ds/romstage.c
@@ -41,6 +41,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/asus/p2b-f/romstage.c b/src/mainboard/asus/p2b-f/romstage.c
index b8577545f5..64b4dae172 100644
--- a/src/mainboard/asus/p2b-f/romstage.c
+++ b/src/mainboard/asus/p2b-f/romstage.c
@@ -43,6 +43,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/asus/p2b-ls/romstage.c b/src/mainboard/asus/p2b-ls/romstage.c
index d046c4b2fd..8cf2b42dea 100644
--- a/src/mainboard/asus/p2b-ls/romstage.c
+++ b/src/mainboard/asus/p2b-ls/romstage.c
@@ -42,6 +42,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/asus/p2b/romstage.c b/src/mainboard/asus/p2b/romstage.c
index 22d3270f78..3c3f9eb32f 100644
--- a/src/mainboard/asus/p2b/romstage.c
+++ b/src/mainboard/asus/p2b/romstage.c
@@ -42,6 +42,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/asus/p3b-f/romstage.c b/src/mainboard/asus/p3b-f/romstage.c
index e7a7f439be..825457e9a9 100644
--- a/src/mainboard/asus/p3b-f/romstage.c
+++ b/src/mainboard/asus/p3b-f/romstage.c
@@ -74,6 +74,7 @@ static void disable_spd(void)
 	outb(0x67, PM_IO_BASE + 0x37);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/axus/tc320/romstage.c b/src/mainboard/axus/tc320/romstage.c
index 053da17753..e733003b5c 100644
--- a/src/mainboard/axus/tc320/romstage.c
+++ b/src/mainboard/axus/tc320/romstage.c
@@ -31,6 +31,7 @@
 
 #define SERIAL_DEV PNP_DEV(0x2e, PC97317_SP1)
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	pc97317_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/azza/pt-6ibd/romstage.c b/src/mainboard/azza/pt-6ibd/romstage.c
index b4252a6aba..7325618726 100644
--- a/src/mainboard/azza/pt-6ibd/romstage.c
+++ b/src/mainboard/azza/pt-6ibd/romstage.c
@@ -43,6 +43,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/bachmann/ot200/romstage.c b/src/mainboard/bachmann/ot200/romstage.c
index 39385c7e90..41a65dda19 100644
--- a/src/mainboard/bachmann/ot200/romstage.c
+++ b/src/mainboard/bachmann/ot200/romstage.c
@@ -46,6 +46,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 #include "cpu/amd/geode_lx/syspreinit.c"
 #include "cpu/amd/geode_lx/msrinit.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	static const struct mem_controller memctrl[] = {
diff --git a/src/mainboard/bcom/winnet100/romstage.c b/src/mainboard/bcom/winnet100/romstage.c
index 053da17753..e733003b5c 100644
--- a/src/mainboard/bcom/winnet100/romstage.c
+++ b/src/mainboard/bcom/winnet100/romstage.c
@@ -31,6 +31,7 @@
 
 #define SERIAL_DEV PNP_DEV(0x2e, PC97317_SP1)
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	pc97317_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/bcom/winnetp680/romstage.c b/src/mainboard/bcom/winnetp680/romstage.c
index a252e00eb0..3676a6d145 100644
--- a/src/mainboard/bcom/winnetp680/romstage.c
+++ b/src/mainboard/bcom/winnetp680/romstage.c
@@ -81,6 +81,7 @@ static const struct mem_controller ctrl = {
 	.channel0 = { DIMM0 },
 };
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	/* Enable multifunction for northbridge. */
diff --git a/src/mainboard/biostar/m6tba/romstage.c b/src/mainboard/biostar/m6tba/romstage.c
index dd7684acea..43158bdbc7 100644
--- a/src/mainboard/biostar/m6tba/romstage.c
+++ b/src/mainboard/biostar/m6tba/romstage.c
@@ -40,6 +40,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	smscsuperio_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/compaq/deskpro_en_sff_p600/romstage.c b/src/mainboard/compaq/deskpro_en_sff_p600/romstage.c
index 37b28df0cc..8de8a83228 100644
--- a/src/mainboard/compaq/deskpro_en_sff_p600/romstage.c
+++ b/src/mainboard/compaq/deskpro_en_sff_p600/romstage.c
@@ -42,6 +42,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	/* FIXME: Should be PC97307! */
diff --git a/src/mainboard/digitallogic/adl855pc/romstage.c b/src/mainboard/digitallogic/adl855pc/romstage.c
index 5935af27e6..0ae7610c2e 100644
--- a/src/mainboard/digitallogic/adl855pc/romstage.c
+++ b/src/mainboard/digitallogic/adl855pc/romstage.c
@@ -26,6 +26,7 @@ static inline int spd_read_byte(unsigned device, unsigned address)
 #include "northbridge/intel/i855/raminit.c"
 #include "northbridge/intel/i855/reset_test.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	if (bist == 0) {
diff --git a/src/mainboard/digitallogic/msm586seg/romstage.c b/src/mainboard/digitallogic/msm586seg/romstage.c
index e67ec684b4..b6412e874d 100644
--- a/src/mainboard/digitallogic/msm586seg/romstage.c
+++ b/src/mainboard/digitallogic/msm586seg/romstage.c
@@ -154,6 +154,7 @@ static inline void irqinit(void){
 #endif
 }
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
     volatile int i;
diff --git a/src/mainboard/digitallogic/msm800sev/romstage.c b/src/mainboard/digitallogic/msm800sev/romstage.c
index 986e9185a7..6075565afc 100644
--- a/src/mainboard/digitallogic/msm800sev/romstage.c
+++ b/src/mainboard/digitallogic/msm800sev/romstage.c
@@ -30,6 +30,7 @@ int spd_read_byte(unsigned device, unsigned address)
 #include "cpu/amd/geode_lx/syspreinit.c"
 #include "cpu/amd/geode_lx/msrinit.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 
diff --git a/src/mainboard/dmp/vortex86ex/romstage.c b/src/mainboard/dmp/vortex86ex/romstage.c
index 8889015929..040b937320 100644
--- a/src/mainboard/dmp/vortex86ex/romstage.c
+++ b/src/mainboard/dmp/vortex86ex/romstage.c
@@ -300,6 +300,7 @@ static void enable_l2_cache(void)
 	pci_write_config8(NB1, 0xe8, reg_nb_f1_e8);
 }
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	device_t dev;
diff --git a/src/mainboard/eaglelion/5bcm/romstage.c b/src/mainboard/eaglelion/5bcm/romstage.c
index 2f803aa98d..cbfe04d8f1 100644
--- a/src/mainboard/eaglelion/5bcm/romstage.c
+++ b/src/mainboard/eaglelion/5bcm/romstage.c
@@ -12,6 +12,7 @@
 
 #define SERIAL_DEV PNP_DEV(0x2e, PC97317_SP1)
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	pc97317_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/ecs/p6iwp-fe/romstage.c b/src/mainboard/ecs/p6iwp-fe/romstage.c
index c014c5785a..7deb730b05 100644
--- a/src/mainboard/ecs/p6iwp-fe/romstage.c
+++ b/src/mainboard/ecs/p6iwp-fe/romstage.c
@@ -37,6 +37,7 @@
 #define SERIAL_DEV PNP_DEV(0x2e, IT8712F_SP1)
 #define CLKIN_DEV PNP_DEV(0x2e, IT8712F_GPIO)
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	ite_conf_clkin(CLKIN_DEV, ITE_UART_CLK_PREDIVIDE_24);
diff --git a/src/mainboard/emulation/qemu-i440fx/romstage.c b/src/mainboard/emulation/qemu-i440fx/romstage.c
index bf33dee668..8dc61b200f 100644
--- a/src/mainboard/emulation/qemu-i440fx/romstage.c
+++ b/src/mainboard/emulation/qemu-i440fx/romstage.c
@@ -33,7 +33,7 @@
 
 #include "memory.c"
 
-void main(unsigned long bist);
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	int cbmem_was_initted;
diff --git a/src/mainboard/emulation/qemu-q35/romstage.c b/src/mainboard/emulation/qemu-q35/romstage.c
index 190c775def..635a44f77e 100644
--- a/src/mainboard/emulation/qemu-q35/romstage.c
+++ b/src/mainboard/emulation/qemu-q35/romstage.c
@@ -34,6 +34,7 @@
 
 #include "../qemu-i440fx/memory.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	int cbmem_was_initted;
diff --git a/src/mainboard/getac/p470/romstage.c b/src/mainboard/getac/p470/romstage.c
index b0dd2bc544..5ebc4518f3 100644
--- a/src/mainboard/getac/p470/romstage.c
+++ b/src/mainboard/getac/p470/romstage.c
@@ -265,6 +265,7 @@ static void early_ich7_init(void)
 	RCBA32(0x2034) = reg32;
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	u32 reg32;
diff --git a/src/mainboard/gigabyte/ga-6bxc/romstage.c b/src/mainboard/gigabyte/ga-6bxc/romstage.c
index 1b2e29b9ff..d28ac34a6f 100644
--- a/src/mainboard/gigabyte/ga-6bxc/romstage.c
+++ b/src/mainboard/gigabyte/ga-6bxc/romstage.c
@@ -40,6 +40,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	it8671f_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/gigabyte/ga-6bxe/romstage.c b/src/mainboard/gigabyte/ga-6bxe/romstage.c
index c3926f0964..cad36944b0 100644
--- a/src/mainboard/gigabyte/ga-6bxe/romstage.c
+++ b/src/mainboard/gigabyte/ga-6bxe/romstage.c
@@ -40,6 +40,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	it8671f_48mhz_clkin();
diff --git a/src/mainboard/google/butterfly/romstage.c b/src/mainboard/google/butterfly/romstage.c
index d946ea338d..1c7b8baf28 100644
--- a/src/mainboard/google/butterfly/romstage.c
+++ b/src/mainboard/google/butterfly/romstage.c
@@ -112,6 +112,7 @@ static void rcba_config(void)
 	RCBA32(FD) = reg32;
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	int boot_mode = 0;
diff --git a/src/mainboard/google/link/romstage.c b/src/mainboard/google/link/romstage.c
index 18c833ad38..25c65298a9 100644
--- a/src/mainboard/google/link/romstage.c
+++ b/src/mainboard/google/link/romstage.c
@@ -150,6 +150,7 @@ static void copy_spd(struct pei_data *peid)
 	       sizeof(peid->spd_data[0]));
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	int boot_mode = 0;
diff --git a/src/mainboard/google/parrot/romstage.c b/src/mainboard/google/parrot/romstage.c
index 45cf7fef2a..a4daae5ab6 100644
--- a/src/mainboard/google/parrot/romstage.c
+++ b/src/mainboard/google/parrot/romstage.c
@@ -113,6 +113,7 @@ static void rcba_config(void)
 	RCBA32(FD) = reg32;
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	int boot_mode = 0;
diff --git a/src/mainboard/google/stout/romstage.c b/src/mainboard/google/stout/romstage.c
index 0e29b332df..008f1f8361 100644
--- a/src/mainboard/google/stout/romstage.c
+++ b/src/mainboard/google/stout/romstage.c
@@ -154,6 +154,7 @@ static void early_ec_init(void)
 	}
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	int boot_mode = 0;
diff --git a/src/mainboard/hp/e_vectra_p2706t/romstage.c b/src/mainboard/hp/e_vectra_p2706t/romstage.c
index 81e1ad26cd..85660c00f4 100644
--- a/src/mainboard/hp/e_vectra_p2706t/romstage.c
+++ b/src/mainboard/hp/e_vectra_p2706t/romstage.c
@@ -37,6 +37,7 @@
 /* TODO: It's a PC87364 actually! */
 #define SERIAL_DEV PNP_DEV(0x2e, PC87360_SP1)
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	/* TODO: It's a PC87364 actually! */
diff --git a/src/mainboard/ibase/mb899/romstage.c b/src/mainboard/ibase/mb899/romstage.c
index 0e74418981..eec574d139 100644
--- a/src/mainboard/ibase/mb899/romstage.c
+++ b/src/mainboard/ibase/mb899/romstage.c
@@ -223,6 +223,7 @@ static void early_ich7_init(void)
 	RCBA32(0x2034) = reg32;
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	u32 reg32;
diff --git a/src/mainboard/iei/juki-511p/romstage.c b/src/mainboard/iei/juki-511p/romstage.c
index 8b26b40e6a..b8daac4676 100644
--- a/src/mainboard/iei/juki-511p/romstage.c
+++ b/src/mainboard/iei/juki-511p/romstage.c
@@ -32,6 +32,7 @@
 
 #define SERIAL_DEV PNP_DEV(0x3f0, W83977F_SP1)
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	w83977f_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/iei/nova4899r/romstage.c b/src/mainboard/iei/nova4899r/romstage.c
index 174953d9c6..9a89107cdb 100644
--- a/src/mainboard/iei/nova4899r/romstage.c
+++ b/src/mainboard/iei/nova4899r/romstage.c
@@ -32,6 +32,7 @@
 
 #include "northbridge/amd/gx1/raminit.c"
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	w83977tf_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/iei/pcisa-lx-800-r10/romstage.c b/src/mainboard/iei/pcisa-lx-800-r10/romstage.c
index a75691cbd7..2af0b2f7aa 100644
--- a/src/mainboard/iei/pcisa-lx-800-r10/romstage.c
+++ b/src/mainboard/iei/pcisa-lx-800-r10/romstage.c
@@ -49,6 +49,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 #include "cpu/amd/geode_lx/syspreinit.c"
 #include "cpu/amd/geode_lx/msrinit.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 
diff --git a/src/mainboard/iei/pm-lx-800-r11/romstage.c b/src/mainboard/iei/pm-lx-800-r11/romstage.c
index bf34e9ae51..d2e331eac8 100644
--- a/src/mainboard/iei/pm-lx-800-r11/romstage.c
+++ b/src/mainboard/iei/pm-lx-800-r11/romstage.c
@@ -53,6 +53,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 #include <cpu/amd/geode_lx/syspreinit.c>
 #include <cpu/amd/geode_lx/msrinit.c>
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	static const struct mem_controller memctrl[] = {
diff --git a/src/mainboard/iei/pm-lx2-800-r10/romstage.c b/src/mainboard/iei/pm-lx2-800-r10/romstage.c
index b34bce4d1d..947b52dab1 100644
--- a/src/mainboard/iei/pm-lx2-800-r10/romstage.c
+++ b/src/mainboard/iei/pm-lx2-800-r10/romstage.c
@@ -53,6 +53,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 #include <cpu/amd/geode_lx/syspreinit.c>
 #include <cpu/amd/geode_lx/msrinit.c>
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	static const struct mem_controller memctrl[] = {
diff --git a/src/mainboard/intel/d810e2cb/romstage.c b/src/mainboard/intel/d810e2cb/romstage.c
index 6c277d5cfe..982060c3b3 100644
--- a/src/mainboard/intel/d810e2cb/romstage.c
+++ b/src/mainboard/intel/d810e2cb/romstage.c
@@ -35,6 +35,7 @@
 
 #define SERIAL_DEV PNP_DEV(0x4e, SMSCSUPERIO_SP1)
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	/* Set southbridge and Super I/O GPIOs. */
diff --git a/src/mainboard/intel/d945gclf/romstage.c b/src/mainboard/intel/d945gclf/romstage.c
index fbec052fba..94b66104ab 100644
--- a/src/mainboard/intel/d945gclf/romstage.c
+++ b/src/mainboard/intel/d945gclf/romstage.c
@@ -156,6 +156,7 @@ static void early_ich7_init(void)
 	RCBA32(0x2034) = reg32;
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	u32 reg32;
diff --git a/src/mainboard/intel/eagleheights/romstage.c b/src/mainboard/intel/eagleheights/romstage.c
index 249fda44d5..99445b88e5 100644
--- a/src/mainboard/intel/eagleheights/romstage.c
+++ b/src/mainboard/intel/eagleheights/romstage.c
@@ -120,6 +120,7 @@ static void early_config(void)
 	pci_write_config8(PCI_DEV(0, 0x1F, 2), SATA_MAP, (SATA_MODE_AHCI << 6) | (0 << 0));
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	/* int boot_mode = 0; */
diff --git a/src/mainboard/intel/emeraldlake2/romstage.c b/src/mainboard/intel/emeraldlake2/romstage.c
index 5597a2d496..12abb548b5 100644
--- a/src/mainboard/intel/emeraldlake2/romstage.c
+++ b/src/mainboard/intel/emeraldlake2/romstage.c
@@ -162,6 +162,7 @@ static void setup_sio_gpios(void)
 	outb(0xaa, port);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	int boot_mode = 0;
diff --git a/src/mainboard/intel/jarrell/romstage.c b/src/mainboard/intel/jarrell/romstage.c
index bddb34afe6..a672afa5b1 100644
--- a/src/mainboard/intel/jarrell/romstage.c
+++ b/src/mainboard/intel/jarrell/romstage.c
@@ -38,6 +38,7 @@ static inline int spd_read_byte(unsigned device, unsigned address)
 #include "debug.c"
 #include "arch/x86/lib/stages.c"
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	static const struct mem_controller mch[] = {
diff --git a/src/mainboard/intel/mtarvon/romstage.c b/src/mainboard/intel/mtarvon/romstage.c
index 0cab9bdeed..2e99be558b 100644
--- a/src/mainboard/intel/mtarvon/romstage.c
+++ b/src/mainboard/intel/mtarvon/romstage.c
@@ -51,6 +51,7 @@ static inline int spd_read_byte(u16 device, u8 address)
 #include "arch/x86/lib/stages.c"
 #endif
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	msr_t msr;
diff --git a/src/mainboard/intel/truxton/romstage.c b/src/mainboard/intel/truxton/romstage.c
index 71c5f38d8f..c56b1dfe31 100644
--- a/src/mainboard/intel/truxton/romstage.c
+++ b/src/mainboard/intel/truxton/romstage.c
@@ -51,6 +51,7 @@ static inline int spd_read_byte(u16 device, u8 address)
 
 #define SERIAL_DEV PNP_DEV(0x4e, I3100_SP1)
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	msr_t msr;
diff --git a/src/mainboard/intel/xe7501devkit/romstage.c b/src/mainboard/intel/xe7501devkit/romstage.c
index 342e6f14cb..f35f93ba20 100644
--- a/src/mainboard/intel/xe7501devkit/romstage.c
+++ b/src/mainboard/intel/xe7501devkit/romstage.c
@@ -33,6 +33,7 @@ static inline int spd_read_byte(unsigned device, unsigned address)
 #include "lib/generic_sdram.c"
 
 // This function MUST appear last (ROMCC limitation)
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	static const struct mem_controller memctrl[] = {
diff --git a/src/mainboard/iwave/iWRainbowG6/romstage.c b/src/mainboard/iwave/iWRainbowG6/romstage.c
index 4da6fe7fb9..5ede2f9ed6 100644
--- a/src/mainboard/iwave/iWRainbowG6/romstage.c
+++ b/src/mainboard/iwave/iWRainbowG6/romstage.c
@@ -332,6 +332,7 @@ static void poulsbo_setup_Stage2Regs(void)
 	printk(BIOS_DEBUG, " done.\n");
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	int boot_mode = 0;
diff --git a/src/mainboard/jetway/j7f2/romstage.c b/src/mainboard/jetway/j7f2/romstage.c
index 845561026d..cc207b1245 100644
--- a/src/mainboard/jetway/j7f2/romstage.c
+++ b/src/mainboard/jetway/j7f2/romstage.c
@@ -86,6 +86,7 @@ static const struct mem_controller ctrl = {
 	.channel0 = { DIMM0 },
 };
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	/* Enable multifunction for northbridge. */
diff --git a/src/mainboard/kontron/986lcd-m/romstage.c b/src/mainboard/kontron/986lcd-m/romstage.c
index 9c76a420ba..842f7bcf4e 100644
--- a/src/mainboard/kontron/986lcd-m/romstage.c
+++ b/src/mainboard/kontron/986lcd-m/romstage.c
@@ -329,6 +329,7 @@ static void early_ich7_init(void)
 	RCBA32(0x2034) = reg32;
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	u32 reg32;
diff --git a/src/mainboard/kontron/ktqm77/romstage.c b/src/mainboard/kontron/ktqm77/romstage.c
index d74f3a6da3..98f5f10b29 100644
--- a/src/mainboard/kontron/ktqm77/romstage.c
+++ b/src/mainboard/kontron/ktqm77/romstage.c
@@ -159,6 +159,7 @@ static void superio_gpio_config(void)
 	pnp_exit_ext_func_mode(dev);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	int boot_mode = 0;
diff --git a/src/mainboard/lanner/em8510/romstage.c b/src/mainboard/lanner/em8510/romstage.c
index 4ae5c125a6..186e9fd634 100644
--- a/src/mainboard/lanner/em8510/romstage.c
+++ b/src/mainboard/lanner/em8510/romstage.c
@@ -48,6 +48,7 @@ static inline int spd_read_byte(unsigned device, unsigned address)
 #include "northbridge/intel/i855/raminit.c"
 #include "northbridge/intel/i855/reset_test.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	if (bist == 0) {
diff --git a/src/mainboard/lenovo/t520/romstage.c b/src/mainboard/lenovo/t520/romstage.c
index 548c040086..df460922f2 100644
--- a/src/mainboard/lenovo/t520/romstage.c
+++ b/src/mainboard/lenovo/t520/romstage.c
@@ -108,6 +108,7 @@ static void rcba_config(void)
 	RCBA32(BUC) = 0;
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	int boot_mode = 0;
diff --git a/src/mainboard/lenovo/t530/romstage.c b/src/mainboard/lenovo/t530/romstage.c
index d65031adba..b2cd6163c4 100644
--- a/src/mainboard/lenovo/t530/romstage.c
+++ b/src/mainboard/lenovo/t530/romstage.c
@@ -109,6 +109,7 @@ static void rcba_config(void)
 	RCBA32(BUC) = 0;
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	int boot_mode = 0;
diff --git a/src/mainboard/lenovo/t60/romstage.c b/src/mainboard/lenovo/t60/romstage.c
index 1e2b72d6b7..01e48e7042 100644
--- a/src/mainboard/lenovo/t60/romstage.c
+++ b/src/mainboard/lenovo/t60/romstage.c
@@ -206,6 +206,7 @@ static void early_ich7_init(void)
 	RCBA32(0x2034) = reg32;
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	u32 reg32;
diff --git a/src/mainboard/lenovo/x201/romstage.c b/src/mainboard/lenovo/x201/romstage.c
index aa2c36710d..5f8e291692 100644
--- a/src/mainboard/lenovo/x201/romstage.c
+++ b/src/mainboard/lenovo/x201/romstage.c
@@ -215,6 +215,7 @@ static void set_fsb_frequency(void)
 	smbus_block_write(0x69, 0, 5, block);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	u32 reg32;
diff --git a/src/mainboard/lenovo/x230/romstage.c b/src/mainboard/lenovo/x230/romstage.c
index 8c82e61539..1705003454 100644
--- a/src/mainboard/lenovo/x230/romstage.c
+++ b/src/mainboard/lenovo/x230/romstage.c
@@ -148,7 +148,7 @@ init_usb (void)
 	outw (0x0000, DEFAULT_PMBASE | 0x003c);
 }
 
-
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	int s3resume = 0;
diff --git a/src/mainboard/lenovo/x60/romstage.c b/src/mainboard/lenovo/x60/romstage.c
index d1f8f640a2..68a9b48937 100644
--- a/src/mainboard/lenovo/x60/romstage.c
+++ b/src/mainboard/lenovo/x60/romstage.c
@@ -213,6 +213,7 @@ static void early_ich7_init(void)
 	RCBA32(0x2034) = reg32;
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	u32 reg32;
diff --git a/src/mainboard/lippert/frontrunner/romstage.c b/src/mainboard/lippert/frontrunner/romstage.c
index 92a3a99da3..3192e5c1b2 100644
--- a/src/mainboard/lippert/frontrunner/romstage.c
+++ b/src/mainboard/lippert/frontrunner/romstage.c
@@ -71,6 +71,7 @@ static inline int spd_read_byte(unsigned int device, unsigned int address)
 #include "cpu/amd/geode_gx2/syspreinit.c"
 #include "cpu/amd/geode_lx/msrinit.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	static const struct mem_controller memctrl [] = {
diff --git a/src/mainboard/lippert/hurricane-lx/romstage.c b/src/mainboard/lippert/hurricane-lx/romstage.c
index 063721b059..b3b449862b 100644
--- a/src/mainboard/lippert/hurricane-lx/romstage.c
+++ b/src/mainboard/lippert/hurricane-lx/romstage.c
@@ -110,6 +110,7 @@ static void mb_gpio_init(void)
 	}
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 
diff --git a/src/mainboard/lippert/literunner-lx/romstage.c b/src/mainboard/lippert/literunner-lx/romstage.c
index 174620a8ac..2f7bd8580a 100644
--- a/src/mainboard/lippert/literunner-lx/romstage.c
+++ b/src/mainboard/lippert/literunner-lx/romstage.c
@@ -152,6 +152,7 @@ static void mb_gpio_init(void)
 	}
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	int err;
diff --git a/src/mainboard/lippert/roadrunner-lx/romstage.c b/src/mainboard/lippert/roadrunner-lx/romstage.c
index 2642373efd..18f48f6791 100644
--- a/src/mainboard/lippert/roadrunner-lx/romstage.c
+++ b/src/mainboard/lippert/roadrunner-lx/romstage.c
@@ -85,6 +85,7 @@ static void mb_gpio_init(void)
 	}
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 
diff --git a/src/mainboard/lippert/spacerunner-lx/romstage.c b/src/mainboard/lippert/spacerunner-lx/romstage.c
index 9d5539e2bb..c3f1c8a201 100644
--- a/src/mainboard/lippert/spacerunner-lx/romstage.c
+++ b/src/mainboard/lippert/spacerunner-lx/romstage.c
@@ -149,6 +149,7 @@ static void mb_gpio_init(void)
 	}
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	int err;
diff --git a/src/mainboard/mitac/6513wu/romstage.c b/src/mainboard/mitac/6513wu/romstage.c
index b337fb23b6..59e1c6d8ef 100644
--- a/src/mainboard/mitac/6513wu/romstage.c
+++ b/src/mainboard/mitac/6513wu/romstage.c
@@ -35,6 +35,7 @@
 
 #define SERIAL_DEV PNP_DEV(0x4e, SMSCSUPERIO_SP1)
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	smscsuperio_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/msi/ms6119/romstage.c b/src/mainboard/msi/ms6119/romstage.c
index 813e8557bd..578de61370 100644
--- a/src/mainboard/msi/ms6119/romstage.c
+++ b/src/mainboard/msi/ms6119/romstage.c
@@ -41,6 +41,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/msi/ms6147/romstage.c b/src/mainboard/msi/ms6147/romstage.c
index b7f99f5b58..a6767bc9a8 100644
--- a/src/mainboard/msi/ms6147/romstage.c
+++ b/src/mainboard/msi/ms6147/romstage.c
@@ -41,6 +41,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/msi/ms6156/romstage.c b/src/mainboard/msi/ms6156/romstage.c
index 09713d4f8b..3811cc53e5 100644
--- a/src/mainboard/msi/ms6156/romstage.c
+++ b/src/mainboard/msi/ms6156/romstage.c
@@ -41,6 +41,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/msi/ms6178/romstage.c b/src/mainboard/msi/ms6178/romstage.c
index fa78a82c37..4005ac8ff1 100644
--- a/src/mainboard/msi/ms6178/romstage.c
+++ b/src/mainboard/msi/ms6178/romstage.c
@@ -36,6 +36,7 @@
 #define SERIAL_DEV PNP_DEV(0x2e, W83627HF_SP1)
 #define DUMMY_DEV PNP_DEV(0x2e, 0)
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	w83627hf_set_clksel_48(DUMMY_DEV);
diff --git a/src/mainboard/nec/powermate2000/romstage.c b/src/mainboard/nec/powermate2000/romstage.c
index 08a845d5c1..97d05807c5 100644
--- a/src/mainboard/nec/powermate2000/romstage.c
+++ b/src/mainboard/nec/powermate2000/romstage.c
@@ -34,6 +34,7 @@
 
 #define SERIAL_DEV PNP_DEV(0x2e, SMSCSUPERIO_SP1)
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	smscsuperio_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/nokia/ip530/romstage.c b/src/mainboard/nokia/ip530/romstage.c
index c04067c489..39c75caa36 100644
--- a/src/mainboard/nokia/ip530/romstage.c
+++ b/src/mainboard/nokia/ip530/romstage.c
@@ -40,6 +40,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	smscsuperio_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/packardbell/ms2290/romstage.c b/src/mainboard/packardbell/ms2290/romstage.c
index 2ca520d267..93dd7c278b 100644
--- a/src/mainboard/packardbell/ms2290/romstage.c
+++ b/src/mainboard/packardbell/ms2290/romstage.c
@@ -198,6 +198,7 @@ static inline u16 read_acpi16(u32 addr)
 	return inw(DEFAULT_PMBASE | addr);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	u32 reg32;
diff --git a/src/mainboard/pcengines/alix1c/romstage.c b/src/mainboard/pcengines/alix1c/romstage.c
index 204f0bdad9..436edc0d63 100644
--- a/src/mainboard/pcengines/alix1c/romstage.c
+++ b/src/mainboard/pcengines/alix1c/romstage.c
@@ -107,6 +107,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 #include "cpu/amd/geode_lx/syspreinit.c"
 #include "cpu/amd/geode_lx/msrinit.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	static const struct mem_controller memctrl[] = {
diff --git a/src/mainboard/pcengines/alix2d/romstage.c b/src/mainboard/pcengines/alix2d/romstage.c
index 18453acdf2..9b272a4a65 100644
--- a/src/mainboard/pcengines/alix2d/romstage.c
+++ b/src/mainboard/pcengines/alix2d/romstage.c
@@ -130,6 +130,7 @@ static void mb_gpio_init(void)
 	outl(1 << 11, GPIO_IO_BASE + GPIOH_OUTPUT_VALUE);       /* Led 3 disabled */
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	static const struct mem_controller memctrl[] = {
diff --git a/src/mainboard/rca/rm4100/romstage.c b/src/mainboard/rca/rm4100/romstage.c
index 4db8cbb77a..7dd4b4811f 100644
--- a/src/mainboard/rca/rm4100/romstage.c
+++ b/src/mainboard/rca/rm4100/romstage.c
@@ -94,6 +94,7 @@ static void mb_early_setup(void)
 	pci_write_config8(PCI_DEV(0, 0x1f, 0), ACPI_CNTL, 0x10);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	if (bist == 0) {
diff --git a/src/mainboard/roda/rk886ex/romstage.c b/src/mainboard/roda/rk886ex/romstage.c
index 1bea48c875..a4f55a8bec 100644
--- a/src/mainboard/roda/rk886ex/romstage.c
+++ b/src/mainboard/roda/rk886ex/romstage.c
@@ -251,6 +251,7 @@ static void init_artec_dongle(void)
 	outb(0xf4, 0x88);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	u32 reg32;
diff --git a/src/mainboard/roda/rk9/romstage.c b/src/mainboard/roda/rk9/romstage.c
index 3d11fee3fa..01389368a1 100644
--- a/src/mainboard/roda/rk9/romstage.c
+++ b/src/mainboard/roda/rk9/romstage.c
@@ -120,6 +120,7 @@ static void default_superio_gpio_setup(void)
 	outb(0x10, 0x600 + 0xb + 4); /* GP40 - GP47 */
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	sysinfo_t sysinfo;
diff --git a/src/mainboard/samsung/lumpy/romstage.c b/src/mainboard/samsung/lumpy/romstage.c
index 001a1f8636..f984af2baa 100644
--- a/src/mainboard/samsung/lumpy/romstage.c
+++ b/src/mainboard/samsung/lumpy/romstage.c
@@ -132,6 +132,7 @@ static void early_pch_init(void)
 	pci_write_config8(PCH_LPC_DEV, 0xa4, reg8);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	int boot_mode = 0;
diff --git a/src/mainboard/samsung/stumpy/romstage.c b/src/mainboard/samsung/stumpy/romstage.c
index 153ce5c68b..3abea10f14 100644
--- a/src/mainboard/samsung/stumpy/romstage.c
+++ b/src/mainboard/samsung/stumpy/romstage.c
@@ -172,6 +172,7 @@ static void setup_sio_gpios(void)
 	it8772f_gpio_setup(DUMMY_DEV, 6, 0x00, 0x00, 0x00, 0x00, 0x00);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	int boot_mode = 0;
diff --git a/src/mainboard/soyo/sy-6ba-plus-iii/romstage.c b/src/mainboard/soyo/sy-6ba-plus-iii/romstage.c
index 551c060944..fccd29adf2 100644
--- a/src/mainboard/soyo/sy-6ba-plus-iii/romstage.c
+++ b/src/mainboard/soyo/sy-6ba-plus-iii/romstage.c
@@ -40,6 +40,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	it8671f_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/supermicro/x6dai_g/romstage.c b/src/mainboard/supermicro/x6dai_g/romstage.c
index c998466c39..6b10a68eb5 100644
--- a/src/mainboard/supermicro/x6dai_g/romstage.c
+++ b/src/mainboard/supermicro/x6dai_g/romstage.c
@@ -42,6 +42,7 @@ static inline int spd_read_byte(unsigned device, unsigned address)
 #include "lib/generic_sdram.c"
 #include "arch/x86/lib/stages.c"
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	static const struct mem_controller mch[] = {
diff --git a/src/mainboard/supermicro/x6dhe_g/romstage.c b/src/mainboard/supermicro/x6dhe_g/romstage.c
index b1c3cfa998..9a637be7ab 100644
--- a/src/mainboard/supermicro/x6dhe_g/romstage.c
+++ b/src/mainboard/supermicro/x6dhe_g/romstage.c
@@ -46,6 +46,7 @@ static inline int spd_read_byte(unsigned device, unsigned address)
 #include "lib/generic_sdram.c"
 #include "arch/x86/lib/stages.c"
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	static const struct mem_controller mch[] = {
diff --git a/src/mainboard/supermicro/x6dhe_g2/romstage.c b/src/mainboard/supermicro/x6dhe_g2/romstage.c
index c6350e8e11..09f4c57de1 100644
--- a/src/mainboard/supermicro/x6dhe_g2/romstage.c
+++ b/src/mainboard/supermicro/x6dhe_g2/romstage.c
@@ -43,6 +43,7 @@ static inline int spd_read_byte(unsigned device, unsigned address)
 #include "lib/generic_sdram.c"
 #include "arch/x86/lib/stages.c"
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	static const struct mem_controller mch[] = {
diff --git a/src/mainboard/supermicro/x6dhr_ig/romstage.c b/src/mainboard/supermicro/x6dhr_ig/romstage.c
index 2dc96c1705..3e51b732a4 100644
--- a/src/mainboard/supermicro/x6dhr_ig/romstage.c
+++ b/src/mainboard/supermicro/x6dhr_ig/romstage.c
@@ -45,6 +45,7 @@ static inline int spd_read_byte(unsigned device, unsigned address)
 #include "lib/generic_sdram.c"
 #include "arch/x86/lib/stages.c"
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	static const struct mem_controller mch[] = {
diff --git a/src/mainboard/supermicro/x6dhr_ig2/romstage.c b/src/mainboard/supermicro/x6dhr_ig2/romstage.c
index 0f2a644ba2..868fbdc929 100644
--- a/src/mainboard/supermicro/x6dhr_ig2/romstage.c
+++ b/src/mainboard/supermicro/x6dhr_ig2/romstage.c
@@ -45,6 +45,7 @@ static inline int spd_read_byte(unsigned device, unsigned address)
 #include "lib/generic_sdram.c"
 #include "arch/x86/lib/stages.c"
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	static const struct mem_controller mch[] = {
diff --git a/src/mainboard/supermicro/x7db8/romstage.c b/src/mainboard/supermicro/x7db8/romstage.c
index 791028e7dc..a52193f4a0 100644
--- a/src/mainboard/supermicro/x7db8/romstage.c
+++ b/src/mainboard/supermicro/x7db8/romstage.c
@@ -111,6 +111,7 @@ int mainboard_set_fbd_clock(int speed)
 	}
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	if (bist == 0)
diff --git a/src/mainboard/technologic/ts5300/romstage.c b/src/mainboard/technologic/ts5300/romstage.c
index 453ceccb11..64de0c036d 100644
--- a/src/mainboard/technologic/ts5300/romstage.c
+++ b/src/mainboard/technologic/ts5300/romstage.c
@@ -136,6 +136,7 @@ static void hard_reset(void)
 	while (1) ;
 }
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	volatile int i;
diff --git a/src/mainboard/televideo/tc7020/romstage.c b/src/mainboard/televideo/tc7020/romstage.c
index 053da17753..e733003b5c 100644
--- a/src/mainboard/televideo/tc7020/romstage.c
+++ b/src/mainboard/televideo/tc7020/romstage.c
@@ -31,6 +31,7 @@
 
 #define SERIAL_DEV PNP_DEV(0x2e, PC97317_SP1)
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	pc97317_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/thomson/ip1000/romstage.c b/src/mainboard/thomson/ip1000/romstage.c
index 77255e7b10..ed87462d80 100644
--- a/src/mainboard/thomson/ip1000/romstage.c
+++ b/src/mainboard/thomson/ip1000/romstage.c
@@ -92,6 +92,7 @@ static void mb_early_setup(void)
 	pci_write_config8(PCI_DEV(0, 0x1f, 0), ACPI_CNTL, 0x10);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	if (bist == 0) {
diff --git a/src/mainboard/traverse/geos/romstage.c b/src/mainboard/traverse/geos/romstage.c
index 36d55a7803..115b402c08 100644
--- a/src/mainboard/traverse/geos/romstage.c
+++ b/src/mainboard/traverse/geos/romstage.c
@@ -46,6 +46,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 #include "cpu/amd/geode_lx/syspreinit.c"
 #include "cpu/amd/geode_lx/msrinit.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	static const struct mem_controller memctrl[] = {
diff --git a/src/mainboard/tyan/s1846/romstage.c b/src/mainboard/tyan/s1846/romstage.c
index bbd63eeb5e..78313fcc03 100644
--- a/src/mainboard/tyan/s1846/romstage.c
+++ b/src/mainboard/tyan/s1846/romstage.c
@@ -40,6 +40,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 	return smbus_read_byte(device, address);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	pc87309_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
diff --git a/src/mainboard/tyan/s2735/romstage.c b/src/mainboard/tyan/s2735/romstage.c
index 600d8069c7..1b03982fd0 100644
--- a/src/mainboard/tyan/s2735/romstage.c
+++ b/src/mainboard/tyan/s2735/romstage.c
@@ -34,6 +34,7 @@ static inline int spd_read_byte(unsigned device, unsigned address)
 #include "northbridge/intel/e7501/reset_test.c"
 #include "lib/generic_sdram.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	static const struct mem_controller memctrl[] = {
diff --git a/src/mainboard/via/epia-cn/romstage.c b/src/mainboard/via/epia-cn/romstage.c
index 2d780dbedd..e7e65f2d44 100644
--- a/src/mainboard/via/epia-cn/romstage.c
+++ b/src/mainboard/via/epia-cn/romstage.c
@@ -79,6 +79,7 @@ static const struct mem_controller ctrl = {
 	.channel0 = { DIMM0 },
 };
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	/* Enable multifunction for northbridge. */
diff --git a/src/mainboard/via/epia-m/romstage.c b/src/mainboard/via/epia-m/romstage.c
index ebe6a503a1..b3b515df2b 100644
--- a/src/mainboard/via/epia-m/romstage.c
+++ b/src/mainboard/via/epia-m/romstage.c
@@ -66,6 +66,7 @@ static void enable_shadow_ram(void)
 	pci_write_config8(dev, 0x63, shadowreg);
 }
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	device_t dev;
diff --git a/src/mainboard/via/epia-m700/romstage.c b/src/mainboard/via/epia-m700/romstage.c
index 6198cda12d..c33acbe24b 100644
--- a/src/mainboard/via/epia-m700/romstage.c
+++ b/src/mainboard/via/epia-m700/romstage.c
@@ -373,6 +373,7 @@ static void EmbedComInit(void)
 #endif
 
 /* cache_as_ram.inc jumps to here. */
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	u16 boot_mode;
diff --git a/src/mainboard/via/epia-m850/romstage.c b/src/mainboard/via/epia-m850/romstage.c
index ece64d8597..969e2b6aec 100644
--- a/src/mainboard/via/epia-m850/romstage.c
+++ b/src/mainboard/via/epia-m850/romstage.c
@@ -42,6 +42,7 @@
 #define SERIAL_DEV PNP_DEV(0x4e, F81865F_SP1)
 
 /* cache_as_ram.inc jumps to here. */
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	u32 tolm;
diff --git a/src/mainboard/via/epia-n/romstage.c b/src/mainboard/via/epia-n/romstage.c
index 568dab5667..5c1477d3a9 100644
--- a/src/mainboard/via/epia-n/romstage.c
+++ b/src/mainboard/via/epia-n/romstage.c
@@ -101,6 +101,7 @@ static void enable_shadow_ram(void)
 	pci_write_config8(ctrl.d0f3, 0x82, shadowreg);
 }
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	unsigned long x;
diff --git a/src/mainboard/via/epia/romstage.c b/src/mainboard/via/epia/romstage.c
index b1e6c54169..e839541a27 100644
--- a/src/mainboard/via/epia/romstage.c
+++ b/src/mainboard/via/epia/romstage.c
@@ -69,6 +69,7 @@ static void enable_shadow_ram(void)
 	pci_write_config8(dev, 0x63, shadowreg);
 }
 
+#include <cpu/intel/car.h>
 static void main(unsigned long bist)
 {
 	if (bist == 0)
diff --git a/src/mainboard/via/pc2500e/romstage.c b/src/mainboard/via/pc2500e/romstage.c
index b2703506a2..aa7e2de6ec 100644
--- a/src/mainboard/via/pc2500e/romstage.c
+++ b/src/mainboard/via/pc2500e/romstage.c
@@ -55,6 +55,7 @@ static const struct mem_controller ctrl = {
 	.channel0 = { DIMM0 }, /* TODO: CN700 currently only supports 1 DIMM. */
 };
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	/* Enable multifunction for northbridge. */
diff --git a/src/mainboard/via/vt8454c/romstage.c b/src/mainboard/via/vt8454c/romstage.c
index e1532be14f..d3ad0e2964 100644
--- a/src/mainboard/via/vt8454c/romstage.c
+++ b/src/mainboard/via/vt8454c/romstage.c
@@ -83,6 +83,7 @@ static void enable_shadow_ram(const struct mem_controller *ctrl)
 	pci_write_config8(PCI_DEV(0, 0, 3), 0x83, shadowreg);
 }
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	/* Set statically so it should work with cx700 as well */
diff --git a/src/mainboard/winent/pl6064/romstage.c b/src/mainboard/winent/pl6064/romstage.c
index 6a38355972..f9b4eecd50 100644
--- a/src/mainboard/winent/pl6064/romstage.c
+++ b/src/mainboard/winent/pl6064/romstage.c
@@ -51,6 +51,7 @@ int spd_read_byte(unsigned int device, unsigned int address)
 #include "cpu/amd/geode_lx/syspreinit.c"
 #include "cpu/amd/geode_lx/msrinit.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 
diff --git a/src/mainboard/wyse/s50/romstage.c b/src/mainboard/wyse/s50/romstage.c
index 9e5dd5337e..07216d5d47 100644
--- a/src/mainboard/wyse/s50/romstage.c
+++ b/src/mainboard/wyse/s50/romstage.c
@@ -49,6 +49,7 @@ static inline int spd_read_byte(unsigned int device, unsigned int address)
 #include "cpu/amd/geode_gx2/syspreinit.c"
 #include "cpu/amd/geode_lx/msrinit.c"
 
+#include <cpu/intel/car.h>
 void main(unsigned long bist)
 {
 	static const struct mem_controller memctrl [] = {