nb/intel/pineview: Switch to POSTCAR_STAGE

Change-Id: If23925e2837645c974e4094e7e2d90e700d3d9e8
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/26786
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/cpu/intel/socket_FCBGA559/Makefile.inc

@@ -8,10 +8,7 @@ subdirs-y += ../microcode
 subdirs-y += ../hyperthreading
 subdirs-y += ../speedstep
 
-ifneq ($(CONFIG_POSTCAR_STAGE),y)
-cpu_incs-y += $(src)/cpu/intel/car/cache_as_ram_ht.inc
-else
 cpu_incs-y += $(src)/cpu/intel/car/p4-netburst/cache_as_ram.S
 postcar-y += ../car/p4-netburst/exit_car.S
-endif
+
 romstage-y += ../car/romstage.c

src/northbridge/intel/pineview/Kconfig

@@ -29,6 +29,8 @@ config NORTHBRIDGE_SPECIFIC_OPTIONS # dummy
 	select INTEL_EDID if MAINBOARD_DO_NATIVE_VGA_INIT
 	select RELOCATABLE_RAMSTAGE
 	select INTEL_GMA_ACPI
+	select POSTCAR_STAGE
+	select POSTCAR_CONSOLE
 
 config BOOTBLOCK_NORTHBRIDGE_INIT
 	string

src/northbridge/intel/pineview/Makefile.inc

@@ -25,4 +25,6 @@ romstage-y += ram_calc.c
 romstage-y += raminit.c
 romstage-y += early_init.c
 
+postcar-y += ram_calc.c
+
 endif

src/northbridge/intel/pineview/ram_calc.c

@@ -107,9 +107,10 @@ void *cbmem_top(void)
 
 #define ROMSTAGE_RAM_STACK_SIZE 0x5000
 
-/* setup_stack_and_mtrrs() determines the stack to use after
- * cache-as-ram is torn down as well as the MTRR settings to use. */
-void *setup_stack_and_mtrrs(void)
+/* platform_enter_postcar() determines the stack to use after
+ * cache-as-ram is torn down as well as the MTRR settings to use,
+ * and continues execution in postcar stage. */
+void platform_enter_postcar(void)
 {
 	struct postcar_frame pcf;
 	uintptr_t top_of_ram;
@@ -132,8 +133,7 @@ void *setup_stack_and_mtrrs(void)
 	postcar_frame_add_mtrr(&pcf, top_of_ram - 4*MiB, 4*MiB, MTRR_TYPE_WRBACK);
 	postcar_frame_add_mtrr(&pcf, top_of_ram - 8*MiB, 4*MiB, MTRR_TYPE_WRBACK);
 
-	/* Save the number of MTRRs to setup. Return the stack location
-	 * pointing to the number of MTRRs.
-	 */
-	return postcar_commit_mtrrs(&pcf);
+	run_postcar_phase(&pcf);
+
+	/* We do not return here. */
 }