emulation/qemu-x86: Use common romstage code

This provides stack guards with checking and common
entry into postcar.

Change-Id: If0729721f0165187946107eb98e8bc754f28e517
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34973
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

4 files changed, 12 insertions, 42 deletions

diff --git a/src/cpu/qemu-x86/Makefile.inc b/src/cpu/qemu-x86/Makefile.inc
index 8ddaa81227..6278f1b231 100644
--- a/src/cpu/qemu-x86/Makefile.inc
+++ b/src/cpu/qemu-x86/Makefile.inc
@@ -14,7 +14,11 @@
 
 bootblock-y += cache_as_ram_bootblock.S
 bootblock-y += bootblock.c
+
+romstage-y += ../intel/car/romstage.c
+
 ramstage-y += qemu.c
+
 subdirs-y += ../x86/mtrr
 subdirs-y += ../x86/lapic
 subdirs-y += ../x86/smm
diff --git a/src/mainboard/emulation/qemu-i440fx/memory.c b/src/mainboard/emulation/qemu-i440fx/memory.c
index aa1ceba410..8209379bef 100644
--- a/src/mainboard/emulation/qemu-i440fx/memory.c
+++ b/src/mainboard/emulation/qemu-i440fx/memory.c
@@ -15,6 +15,7 @@
 
 #include <cbmem.h>
 #include <arch/io.h>
+#include <arch/romstage.h>
 #include "memory.h"
 #include "fw_cfg.h"
 
@@ -61,3 +62,8 @@ void *cbmem_top(void)
 
 	return (void *)top;
 }
+
+/* Nothing to do, MTRRs are no-op on QEMU. */
+void fill_postcar_frame(struct postcar_frame *pcf)
+{
+}
diff --git a/src/mainboard/emulation/qemu-i440fx/romstage.c b/src/mainboard/emulation/qemu-i440fx/romstage.c
index 32eab3de3a..8e5691fc71 100644
--- a/src/mainboard/emulation/qemu-i440fx/romstage.c
+++ b/src/mainboard/emulation/qemu-i440fx/romstage.c
@@ -14,31 +14,10 @@
  * GNU General Public License for more details.
  */
 
-#include <arch/cpu.h>
 #include <arch/romstage.h>
-#include <stdint.h>
 #include <cbmem.h>
-#include <console/console.h>
-#include <timestamp.h>
-#include <program_loading.h>
 
-asmlinkage void car_stage_entry(void)
+void mainboard_romstage_entry(void)
 {
-	struct postcar_frame pcf;
-
-	console_init();
-
 	cbmem_recovery(0);
-
-	timestamp_add_now(TS_START_ROMSTAGE);
-
-	if (postcar_frame_init(&pcf, 0))
-		die("Unable to initialize postcar frame.\n");
-
-	/**
-	 * Run postcar to tear down CAR and load relocatable ramstage.
-	 * There's no CAR on qemu, but for educational purposes and
-	 * testing the postcar stage is used on qemu, too.
-	 */
-	run_postcar_phase(&pcf);
 }
diff --git a/src/mainboard/emulation/qemu-q35/romstage.c b/src/mainboard/emulation/qemu-q35/romstage.c
index 6cd9ee4123..b7fdac2552 100644
--- a/src/mainboard/emulation/qemu-q35/romstage.c
+++ b/src/mainboard/emulation/qemu-q35/romstage.c
@@ -14,14 +14,10 @@
  * GNU General Public License for more details.
  */
 
-#include <arch/cpu.h>
 #include <arch/romstage.h>
-#include <stdint.h>
 #include <cbmem.h>
 #include <console/console.h>
-#include <timestamp.h>
 #include <southbridge/intel/i82801ix/i82801ix.h>
-#include <program_loading.h>
 #include <device/pci_ops.h>
 
 #define D0F0_PCIEXBAR_LO 0x60
@@ -35,26 +31,11 @@ static void mainboard_machine_check(void)
 		die("You must run qemu for machine Q35 (-M q35)");
 }
 
-asmlinkage void car_stage_entry(void)
+void mainboard_romstage_entry(void)
 {
-	struct postcar_frame pcf;
 	i82801ix_early_init();
-	console_init();
 
 	mainboard_machine_check();
 
 	cbmem_recovery(0);
-
-	timestamp_add_now(TS_START_ROMSTAGE);
-
-	if (postcar_frame_init(&pcf, 0))
-		die("Unable to initialize postcar frame.\n");
-
-	/**
-	 * Run postcar to tear down CAR and load relocatable ramstage.
-	 * There's no CAR on qemu, but for educational purposes and
-	 * testing the postcar stage is used on qemu, too.
-	 */
-
-	run_postcar_phase(&pcf);
 }