AGESA: Implement EARLY_CBMEM_INIT

Boards without AGESA_LEGACY_WRAPPER gain EARLY_CBMEM_INIT.
This does not apply to family12 and family14 just yet, as
they do invalidate without write-back on CAR teardown.

Change-Id: I008356efa2bc3df0ed1f0720e225ecc7e9995127
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/19329
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/cpu/amd/agesa/romstage.c

@@ -23,6 +23,7 @@
 #include <console/console.h>
 #include <halt.h>
 #include <program_loading.h>
+#include <romstage_handoff.h>
 #include <smp/node.h>
 #include <string.h>
 #include <northbridge/amd/agesa/agesa_helper.h>
@@ -52,6 +53,8 @@ void * asmlinkage romstage_main(unsigned long bist)
 	struct sysinfo romstage_state;
 	struct sysinfo *cb = &romstage_state;
 	u8 initial_apic_id = (u8) (cpuid_ebx(1) >> 24);
+	uintptr_t stack_top = CACHE_TMP_RAMTOP;
+	int cbmem_initted = 0;
 
 	fill_sysinfo(cb);
 
@@ -85,17 +88,23 @@ void * asmlinkage romstage_main(unsigned long bist)
 
 	}
 
-	uintptr_t stack_top = CACHE_TMP_RAMTOP;
-	if (cb->s3resume) {
-		if (cbmem_recovery(1)) {
+	if (IS_ENABLED(CONFIG_EARLY_CBMEM_INIT) || cb->s3resume)
+		cbmem_initted = !cbmem_recovery(cb->s3resume);
+
+	if (cb->s3resume && !cbmem_initted) {
 		printk(BIOS_EMERG, "Unable to recover CBMEM\n");
 		halt();
 	}
+
+	if (IS_ENABLED(CONFIG_EARLY_CBMEM_INIT) || cb->s3resume) {
 		stack_top = romstage_ram_stack_base(HIGH_ROMSTAGE_STACK_SIZE,
 			ROMSTAGE_STACK_CBMEM);
 		stack_top += HIGH_ROMSTAGE_STACK_SIZE;
 	}
 
+	if (IS_ENABLED(CONFIG_EARLY_CBMEM_INIT))
+		romstage_handoff_init(cb->s3resume);
+
 	printk(BIOS_DEBUG, "Move CAR stack.\n");
 	return (void*)stack_top;
 }

src/northbridge/amd/agesa/Kconfig

@@ -16,7 +16,7 @@
 config NORTHBRIDGE_AMD_AGESA
 	bool
 	default CPU_AMD_AGESA
-	select LATE_CBMEM_INIT
+	select CBMEM_TOP_BACKUP
 
 if NORTHBRIDGE_AMD_AGESA
 

src/northbridge/amd/agesa/family10/Kconfig

@@ -18,6 +18,7 @@ config NORTHBRIDGE_AMD_AGESA_FAMILY10
 	select HAVE_DEBUG_RAM_SETUP
 	select HAVE_DEBUG_SMBUS
 	select HYPERTRANSPORT_PLUGIN_SUPPORT
+	select LATE_CBMEM_INIT if AGESA_LEGACY_WRAPPER
 
 if NORTHBRIDGE_AMD_AGESA_FAMILY10
 

src/northbridge/amd/agesa/family12/Kconfig

@@ -17,6 +17,7 @@ config NORTHBRIDGE_AMD_AGESA_FAMILY12
 	select HAVE_DEBUG_RAM_SETUP
 	select HAVE_DEBUG_SMBUS
 	select HYPERTRANSPORT_PLUGIN_SUPPORT
+	select LATE_CBMEM_INIT
 
 if NORTHBRIDGE_AMD_AGESA_FAMILY12
 

src/northbridge/amd/agesa/family14/Kconfig

@@ -14,6 +14,7 @@
 ##
 config NORTHBRIDGE_AMD_AGESA_FAMILY14
 	bool
+	select LATE_CBMEM_INIT
 
 if NORTHBRIDGE_AMD_AGESA_FAMILY14
 

src/northbridge/amd/agesa/family15/Kconfig

@@ -18,6 +18,7 @@ config NORTHBRIDGE_AMD_AGESA_FAMILY15
 	select HAVE_DEBUG_RAM_SETUP
 	select HAVE_DEBUG_SMBUS
 	select HYPERTRANSPORT_PLUGIN_SUPPORT
+	select LATE_CBMEM_INIT if AGESA_LEGACY_WRAPPER
 
 if NORTHBRIDGE_AMD_AGESA_FAMILY15
 

src/northbridge/amd/agesa/family15rl/Kconfig

@@ -14,6 +14,7 @@
 ##
 config NORTHBRIDGE_AMD_AGESA_FAMILY15_RL
 	bool
+	select LATE_CBMEM_INIT if AGESA_LEGACY_WRAPPER
 
 if NORTHBRIDGE_AMD_AGESA_FAMILY15_RL
 

src/northbridge/amd/agesa/family15tn/Kconfig

@@ -14,6 +14,7 @@
 ##
 config NORTHBRIDGE_AMD_AGESA_FAMILY15_TN
 	bool
+	select LATE_CBMEM_INIT if AGESA_LEGACY_WRAPPER
 
 if NORTHBRIDGE_AMD_AGESA_FAMILY15_TN
 

src/northbridge/amd/agesa/family16kb/Kconfig

@@ -15,6 +15,7 @@
 ##
 config NORTHBRIDGE_AMD_AGESA_FAMILY16_KB
 	bool
+	select LATE_CBMEM_INIT if AGESA_LEGACY_WRAPPER
 
 if NORTHBRIDGE_AMD_AGESA_FAMILY16_KB