x86 cache-as-ram: Remove BROKEN_CAR_MIGRATE option

This was added to handle cases of Intel FSP platforms that had
EARLY_CBMEM_INIT but could not migrate CAR variables to CBMEM.
These boards were recently fixed.

To support combination of EARLY_CBMEM_INIT without CAR migration was
added maintenance effort with little benefits. You had no CBMEM
console for romstage and the few timestamps you could store were
circulated via PCI scratchpads or CMOS nvram.

Change-Id: I5cffb7f2b14c45b67ee70cf48be4d7a4c9e5f761
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8636
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>

src/arch/x86/Kconfig

@@ -51,16 +51,8 @@ config ROMCC
 	bool
 	default n
 
-config BROKEN_CAR_MIGRATE
-	def_bool n
-	help
-	  Many boards use CAR_GLOBAL but have no EARLY_CBMEM_INIT and
-	  manage CAR migration on S3 resume path only. Couple boards use
-	  CAR_GLOBAL and never do CAR migration.
-
 config LATE_CBMEM_INIT
 	def_bool n
-	select BROKEN_CAR_MIGRATE
 	help
 	  Enable this in chipset's Kconfig if northbridge does not implement
 	  early get_top_of_ram() call for romstage. CBMEM tables will be

src/console/Kconfig

@@ -186,7 +186,7 @@ config CONSOLE_CBMEM_BUFFER_SIZE
 
 config CONSOLE_PRERAM_BUFFER_BASE
 	hex
-	default 0xabadbeef if !CACHE_AS_RAM || BROKEN_CAR_MIGRATE
+	default 0xabadbeef if !CACHE_AS_RAM || LATE_CBMEM_INIT
 	default 0x0
 
 config CONSOLE_PRERAM_BUFFER_SIZE

src/cpu/amd/agesa/Kconfig

@@ -34,7 +34,6 @@ config CPU_AMD_AGESA
 	select TSC_SYNC_LFENCE
 	select UDELAY_LAPIC
 	select LAPIC_MONOTONIC_TIMER
-	select BROKEN_CAR_MIGRATE
 	select SPI_FLASH if HAVE_ACPI_RESUME
 
 if CPU_AMD_AGESA

src/cpu/amd/pi/Kconfig

@@ -29,7 +29,6 @@ config CPU_AMD_PI
 	select TSC_SYNC_LFENCE
 	select UDELAY_LAPIC
 	select LAPIC_MONOTONIC_TIMER
-	select BROKEN_CAR_MIGRATE
 	select SPI_FLASH if HAVE_ACPI_RESUME
 
 if CPU_AMD_PI

src/cpu/intel/ep80579/Kconfig

@@ -6,7 +6,6 @@ config CPU_INTEL_EP80579
 	select ARCH_RAMSTAGE_X86_32
 	select SSE
 	select SUPPORT_CPU_UCODE_IN_CBFS
-	select BROKEN_CAR_MIGRATE
 
 if CPU_INTEL_EP80579
 

src/cpu/x86/car.c

@@ -149,9 +149,8 @@ static void do_car_migrate_hooks(void)
 
 void car_migrate_variables(void)
 {
-	if (!IS_ENABLED(CONFIG_BROKEN_CAR_MIGRATE) && !IS_ENABLED(PLATFORM_USES_FSP))
+	if (!IS_ENABLED(PLATFORM_USES_FSP))
 		do_car_migrate_variables();
 
-	if (!IS_ENABLED(CONFIG_BROKEN_CAR_MIGRATE))
-		do_car_migrate_hooks();
+	do_car_migrate_hooks();
 }

src/mainboard/asus/dsbf/Kconfig

@@ -10,7 +10,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select HAVE_PIRQ_TABLE
 	select DRIVERS_I2C_W83793
 	select DRIVERS_GENERIC_IOAPIC
-	select BROKEN_CAR_MIGRATE
 
 config MAINBOARD_DIR
 	string

src/mainboard/iwave/iWRainbowG6/Kconfig

@@ -12,7 +12,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select UDELAY_LAPIC
 	select HAVE_ACPI_TABLES
 	select BOARD_ROMSIZE_KB_1024
-	select BROKEN_CAR_MIGRATE
 
 config MAINBOARD_DIR
 	string

src/mainboard/supermicro/x7db8/Kconfig

@@ -10,7 +10,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select HAVE_PIRQ_TABLE
 	select DRIVERS_I2C_W83793
 	select DRIVERS_GENERIC_IOAPIC
-	select BROKEN_CAR_MIGRATE
 
 config MAINBOARD_DIR
 	string