northbridge/amd/pi: Add support for memory settings

This adds support for binarypi based boards that have
to make adjustments to the memory configuration settings.
A PlatformMemoryConfiguration[] table that describes
the memory configuration must be defined in the
mainboard folder.

Change-Id: I5e4b476a4adf3dd1f3b7843274a81ecb243d10ab
Signed-off-by: Dave Frodin <dave.frodin@se-eng.com>
Reviewed-on: http://review.coreboot.org/10672
Tested-by: build bot (Jenkins)
Reviewed-by: WANG Siyuan <wangsiyuanbuaa@gmail.com>
Reviewed-by: Marc Jones <marc.jones@se-eng.com>

src/northbridge/amd/pi/agesawrapper.c

@@ -26,6 +26,9 @@
 #include <heapManager.h>
 #include <northbridge/amd/pi/agesawrapper.h>
 #include <northbridge/amd/pi/BiosCallOuts.h>
+#include <PlatformMemoryConfiguration.h>
+
+extern const PSO_ENTRY PlatformMemoryConfiguration[];
 
 VOID FchInitS3LateRestore (IN FCH_DATA_BLOCK *FchDataPtr);
 VOID FchInitS3EarlyRestore (IN FCH_DATA_BLOCK *FchDataPtr);
@@ -136,6 +139,18 @@ AGESA_STATUS agesawrapper_amdinitpost(void)
 	AmdCreateStruct (&AmdParamStruct);
 	PostParams = (AMD_POST_PARAMS *)AmdParamStruct.NewStructPtr;
 
+	/*
+	* A PlatformMemoryConfiguration[] table must be added in the
+	* mainboard folder to any boards that need the memory configuation
+	* settings altered from the standard settings. Examples of boards
+	* requiring this change might be boards with soldered down memory,
+	* or boards that use a non-standard memory clock routing scheme
+	* There are PlatformMemoryConfiguration[] tables in many existing
+	* mainboards that can be used as an example.
+	*/
+	if (PlatformMemoryConfiguration[0] != PSO_END)
+		PostParams->MemConfig.PlatformMemoryConfiguration = (PSO_ENTRY *)PlatformMemoryConfiguration;
+
 	// Do not use IS_ENABLED here.  CONFIG_GFXUMA should always have a value.  Allow
 	// the compiler to flag the error if CONFIG_GFXUMA is not set.
 	PostParams->MemConfig.UmaMode = CONFIG_GFXUMA ? UMA_AUTO : UMA_NONE;

src/northbridge/amd/pi/def_callouts.c

@@ -27,6 +27,9 @@
 #include "agesawrapper.h"
 #include "BiosCallOuts.h"
 #include "dimmSpd.h"
+#include <PlatformMemoryConfiguration.h>
+
+const PSO_ENTRY __attribute__((weak)) PlatformMemoryConfiguration[] = { PSO_END };
 
 AGESA_STATUS GetBiosCallout (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
 {