Change in coreboot[master]: vendorcode/intel/edk2/edk2-stable202111: Use fixed size struct elements

[Subrata Banik (Code Review)]

Subrata Banik has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/62847 )

Change subject: vendorcode/intel/edk2/edk2-stable202111: Use fixed size struct elements
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vendorcode/intel/edk2/edk2-stable202111: Use fixed size struct elements

Fix the FSP headers and replace void pointers by fixed sized integers
depending on the used mode to compile the FSP.
Change request here:https://github.com/intel/FSP/issues/59

This is necessary to run on x86_64, as pointers have different size.
Add preprocessor error to warn that x86_64 FSP isn't supported by the
current code.

BUG=b:200113959
TEST=Verified on Meteor Lake platform, without any compilation error

Signed-off-by: Subrata Banik 
Change-Id: I1f33db43f7932cf6d165d0c70a0e2922dad00a09
---
M src/vendorcode/intel/edk2/edk2-stable202111/IntelFsp2Pkg/Include/FspEas/FspApi.h
1 file changed, 13 insertions(+), 3 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/47/62847/1

diff --git a/src/vendorcode/intel/edk2/edk2-stable202111/IntelFsp2Pkg/Include/FspEas/FspApi.h b/src/vendorcode/intel/edk2/edk2-stable202111/IntelFsp2Pkg/Include/FspEas/FspApi.h
index eb9ce86..5576f41 100644
--- a/src/vendorcode/intel/edk2/edk2-stable202111/IntelFsp2Pkg/Include/FspEas/FspApi.h
+++ b/src/vendorcode/intel/edk2/edk2-stable202111/IntelFsp2Pkg/Include/FspEas/FspApi.h
@@ -128,6 +128,7 @@
   UINT8                       Reserved1[20];
 } FSPT_ARCH_UPD;

+#if CONFIG(PLATFORM_USES_FSP2_X86_32)
 ///
 /// FSPM_ARCH_UPD Configuration.
 ///
@@ -141,12 +142,16 @@
   /// Pointer to the non-volatile storage (NVS) data buffer.
   /// If it is NULL it indicates the NVS data is not available.
   ///
-  VOID                        *NvsBufferPtr;
+  /// Note: This ought to be VOID*, but that won't allow calling this binary on x86_64.
+  ///
+  UINT32                      NvsBufferPtr;
   ///
   /// Pointer to the temporary stack base address to be
   /// consumed inside FspMemoryInit() API.
   ///
-  VOID                        *StackBase;
+  /// Note: This ought to be VOID*, but that won't allow calling this binary on x86_64.
+  ///
+  UINT32                      StackBase;
   ///
   /// Temporary stack size to be consumed inside
   /// FspMemoryInit() API.
@@ -165,9 +170,14 @@
   /// Optional event handler for the bootloader to be informed of events occurring during FSP execution.
   /// This value is only valid if Revision is >= 2.
   ///
-  FSP_EVENT_HANDLER           *FspEventHandler;
+  /// Note: This ought to be FSP_EVENT_HANDLER*, but that won't allow calling this binary on x86_64.
+  ///
+  UINT32                      FspEventHandler;
   UINT8                       Reserved1[4];
 } FSPM_ARCH_UPD;
+#else
+#error You need to implement this struct for x86_64 FSP
+#endif

typedef struct {
   ///