intel/model_6ex: Prepare for dynamic CONFIG_RAMTOP

Change-Id: I9bfaa53f8d09962d36df1e86a0edcf100bb08403
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/15229
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/cpu/intel/model_6ex/cache_as_ram.inc

@@ -132,7 +132,12 @@ clear_mtrrs:
 	post_code(0x23)
 
 	/* Call romstage.c main function. */
-	call	main
+	call	romstage_main
+
+	/* Save return value from romstage_main. It contains the stack to use
+	 * after cache-as-ram is torn down. It also contains the information
+	 * for setting up MTRRs. */
+	movl	%eax, %ebx
 
 	post_code(0x2f)
 
@@ -219,7 +224,8 @@ __main:
 	post_code(POST_PREPARE_RAMSTAGE)
 	cld			/* Clear direction flag. */
 
-	movl	$CONFIG_RAMTOP, %esp
+	/* Setup stack as indicated by return value from romstage_main(). */
+	movl	%ebx, %esp
 	movl	%esp, %ebp
 	call	copy_and_run
 

src/cpu/intel/socket_BGA956/Makefile.inc

@@ -10,3 +10,4 @@ subdirs-y += ../speedstep
 
 # Use Intel Core (not Core 2) code for CAR init, any CPU might be used.
 cpu_incs-y += $(src)/cpu/intel/model_6ex/cache_as_ram.inc
+romstage-y += ../car/romstage.c

src/cpu/intel/socket_LGA771/Makefile.inc

@@ -9,3 +9,4 @@ subdirs-y += ../microcode
 subdirs-y += ../hyperthreading
 
 cpu_incs-y += $(src)/cpu/intel/model_6ex/cache_as_ram.inc
+romstage-y += ../car/romstage.c

src/cpu/intel/socket_LGA775/Makefile.inc

@@ -16,3 +16,4 @@ subdirs-y += ../speedstep
 
 cpu_incs-y += $(src)/cpu/intel/car/cache_as_ram_ht.inc
 romstage-y += ../car/romstage.c
+romstage-y += ../car/romstage.c

src/cpu/intel/socket_mFCPGA478/Makefile.inc

@@ -12,3 +12,4 @@ subdirs-y += ../hyperthreading
 subdirs-y += ../speedstep
 
 cpu_incs-y += $(src)/cpu/intel/model_6ex/cache_as_ram.inc
+romstage-y += ../car/romstage.c

src/mainboard/apple/macbook21/romstage.c

@@ -278,7 +278,7 @@ static void early_ich7_init(void)
 	RCBA32(0x2034) = reg32;
 }
 
-void main(unsigned long bist)
+void mainboard_romstage_entry(unsigned long bist)
 {
 	int s3resume = 0;
 	const u8 spd_addrmap[2 * DIMM_SOCKETS] = { 0x50, 0x51, 0x52, 0x53 };

src/mainboard/asus/dsbf/romstage.c

@@ -24,6 +24,7 @@
 #include <lib.h>
 #include <console/console.h>
 #include <cpu/x86/bist.h>
+#include <cpu/intel/romstage.h>
 #include <superio/winbond/common/winbond.h>
 #include <superio/winbond/w83627hf/w83627hf.h>
 #include <northbridge/intel/i5000/raminit.h>
@@ -105,8 +106,7 @@ int mainboard_set_fbd_clock(int speed)
 	}
 }
 
-#include <cpu/intel/romstage.h>
-void main(unsigned long bist)
+void mainboard_romstage_entry(unsigned long bist)
 {
 	if (bist == 0)
 		enable_lapic();

src/mainboard/getac/p470/romstage.c

@@ -26,6 +26,7 @@
 #include <pc80/mc146818rtc.h>
 #include <console/console.h>
 #include <cpu/x86/bist.h>
+#include <cpu/intel/romstage.h>
 #include <halt.h>
 #include <northbridge/intel/i945/i945.h>
 #include <northbridge/intel/i945/raminit.h>
@@ -259,8 +260,7 @@ static void early_ich7_init(void)
 	RCBA32(0x2034) = reg32;
 }
 
-#include <cpu/intel/romstage.h>
-void main(unsigned long bist)
+void mainboard_romstage_entry(unsigned long bist)
 {
 	int s3resume = 0;
 

src/mainboard/ibase/mb899/romstage.c

@@ -29,6 +29,7 @@
 #include <pc80/mc146818rtc.h>
 #include <console/console.h>
 #include <cpu/x86/bist.h>
+#include <cpu/intel/romstage.h>
 #include <halt.h>
 #include <northbridge/intel/i945/i945.h>
 #include <northbridge/intel/i945/raminit.h>
@@ -217,8 +218,7 @@ static void early_ich7_init(void)
 	RCBA32(0x2034) = reg32;
 }
 
-#include <cpu/intel/romstage.h>
-void main(unsigned long bist)
+void mainboard_romstage_entry(unsigned long bist)
 {
 	int s3resume = 0;
 

src/mainboard/intel/eagleheights/romstage.c

@@ -26,6 +26,7 @@
 #include <console/console.h>
 #include <delay.h>
 #include <cpu/x86/bist.h>
+#include <cpu/intel/romstage.h>
 #include <cpu/intel/speedstep.h>
 #include "southbridge/intel/i3100/early_smbus.c"
 #include "southbridge/intel/i3100/early_lpc.c"
@@ -117,8 +118,7 @@ static void early_config(void)
 	pci_write_config8(PCI_DEV(0, 0x1F, 2), SATA_MAP, (SATA_MODE_AHCI << 6) | (0 << 0));
 }
 
-#include <cpu/intel/romstage.h>
-void main(unsigned long bist)
+void mainboard_romstage_entry(unsigned long bist)
 {
 	/* int boot_mode = 0; */
 

src/mainboard/kontron/986lcd-m/romstage.c

@@ -28,6 +28,7 @@
 #include "option_table.h"
 #include <console/console.h>
 #include <cpu/x86/bist.h>
+#include <cpu/intel/romstage.h>
 #include <halt.h>
 #include <superio/winbond/w83627thg/w83627thg.h>
 #include <northbridge/intel/i945/i945.h>
@@ -323,8 +324,7 @@ static void early_ich7_init(void)
 	RCBA32(0x2034) = reg32;
 }
 
-#include <cpu/intel/romstage.h>
-void main(unsigned long bist)
+void mainboard_romstage_entry(unsigned long bist)
 {
 	int s3resume = 0;
 

src/mainboard/lenovo/t400/romstage.c

@@ -23,13 +23,13 @@
 #include <cpu/x86/lapic.h>
 #include <cpu/x86/msr.h>
 #include <cpu/x86/tsc.h>
+#include <cpu/intel/romstage.h>
 #include <cbmem.h>
 #include <lib.h>
 #include <pc80/mc146818rtc.h>
 #include <console/console.h>
 #include <southbridge/intel/i82801ix/i82801ix.h>
 #include <northbridge/intel/gm45/gm45.h>
-#include <cpu/intel/romstage.h>
 
 #define LPC_DEV PCI_DEV(0, 0x1f, 0)
 #define MCH_DEV PCI_DEV(0, 0, 0)
@@ -67,7 +67,7 @@ static void early_lpc_setup(void)
 	pci_write_config32(LPC_DEV, D31F0_GEN3_DEC, 0x1c1681);
 }
 
-void main(unsigned long bist)
+void mainboard_romstage_entry(unsigned long bist)
 {
 	sysinfo_t sysinfo;
 	int s3resume = 0;

src/mainboard/lenovo/t60/romstage.c

@@ -30,6 +30,7 @@
 #include <pc80/mc146818rtc.h>
 #include <console/console.h>
 #include <cpu/x86/bist.h>
+#include <cpu/intel/romstage.h>
 #include <halt.h>
 #include <northbridge/intel/i945/i945.h>
 #include <northbridge/intel/i945/raminit.h>
@@ -199,8 +200,7 @@ static void early_ich7_init(void)
 	RCBA32(0x2034) = reg32;
 }
 
-#include <cpu/intel/romstage.h>
-void main(unsigned long bist)
+void mainboard_romstage_entry(unsigned long bist)
 {
 	int s3resume = 0;
 	int dock_err;

src/mainboard/lenovo/x200/romstage.c

@@ -23,13 +23,13 @@
 #include <cpu/x86/lapic.h>
 #include <cpu/x86/msr.h>
 #include <cpu/x86/tsc.h>
+#include <cpu/intel/romstage.h>
 #include <cbmem.h>
 #include <lib.h>
 #include <pc80/mc146818rtc.h>
 #include <console/console.h>
 #include <southbridge/intel/i82801ix/i82801ix.h>
 #include <northbridge/intel/gm45/gm45.h>
-#include <cpu/intel/romstage.h>
 
 #define LPC_DEV PCI_DEV(0, 0x1f, 0)
 #define MCH_DEV PCI_DEV(0, 0, 0)
@@ -67,7 +67,7 @@ static void early_lpc_setup(void)
 	pci_write_config32(LPC_DEV, D31F0_GEN3_DEC, 0x1c1681);
 }
 
-void main(unsigned long bist)
+void mainboard_romstage_entry(unsigned long bist)
 {
 	sysinfo_t sysinfo;
 	int s3resume = 0;

src/mainboard/lenovo/x60/romstage.c

@@ -30,6 +30,7 @@
 #include <pc80/mc146818rtc.h>
 #include <console/console.h>
 #include <cpu/x86/bist.h>
+#include <cpu/intel/romstage.h>
 #include <halt.h>
 #include <northbridge/intel/i945/i945.h>
 #include <northbridge/intel/i945/raminit.h>
@@ -206,8 +207,7 @@ static void early_ich7_init(void)
 	RCBA32(0x2034) = reg32;
 }
 
-#include <cpu/intel/romstage.h>
-void main(unsigned long bist)
+void mainboard_romstage_entry(unsigned long bist)
 {
 	int s3resume = 0;
 	const u8 spd_addrmap[2 * DIMM_SOCKETS] = { 0x50, 0x52, 0x51, 0x53 };

src/mainboard/roda/rk886ex/romstage.c

@@ -28,6 +28,7 @@
 #include <pc80/mc146818rtc.h>
 #include <console/console.h>
 #include <cpu/x86/bist.h>
+#include <cpu/intel/romstage.h>
 #include <halt.h>
 #include <northbridge/intel/i945/i945.h>
 #include <northbridge/intel/i945/raminit.h>
@@ -244,8 +245,7 @@ static void init_artec_dongle(void)
 	outb(0xf4, 0x88);
 }
 
-#include <cpu/intel/romstage.h>
-void main(unsigned long bist)
+void mainboard_romstage_entry(unsigned long bist)
 {
 	int s3resume = 0;
 

src/mainboard/roda/rk9/romstage.c

@@ -22,6 +22,7 @@
 #include <cpu/x86/lapic.h>
 #include <cpu/x86/msr.h>
 #include <cpu/x86/tsc.h>
+#include <cpu/intel/romstage.h>
 #include <arch/acpi.h>
 #include <cbmem.h>
 #include <lib.h>
@@ -115,8 +116,7 @@ static void default_superio_gpio_setup(void)
 	outb(0x10, 0x600 + 0xb + 4); /* GP40 - GP47 */
 }
 
-#include <cpu/intel/romstage.h>
-void main(unsigned long bist)
+void mainboard_romstage_entry(unsigned long bist)
 {
 	sysinfo_t sysinfo;
 	int s3resume = 0;

src/mainboard/supermicro/x7db8/romstage.c

@@ -24,6 +24,7 @@
 #include <lib.h>
 #include <console/console.h>
 #include <cpu/x86/bist.h>
+#include <cpu/intel/romstage.h>
 #include <superio/winbond/common/winbond.h>
 #include <superio/winbond/w83627hf/w83627hf.h>
 #include <northbridge/intel/i5000/raminit.h>
@@ -106,8 +107,7 @@ int mainboard_set_fbd_clock(int speed)
 	}
 }
 
-#include <cpu/intel/romstage.h>
-void main(unsigned long bist)
+void mainboard_romstage_entry(unsigned long bist)
 {
 	if (bist == 0)
 		enable_lapic();