[edk2-platforms] [PATCH v2] WhiskeylakeOpenBoardPkg: Update PCDs to enable stack sharing

["Agyeman, Prince" <prince.agyeman@intel.com>]

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2409

Updated WhiskeylakeURvp PCDs to enable FSP/BL stack sharing.
This fixes the boot failure seen with the latest Coffee Lake (CFL)
FSP binary (v 7.0.68.41)

Cc: Chasel Chiu <chasel.chiu@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Michael Kubacki <michael.a.kubacki@intel.com>

Signed-off-by: Prince Agyeman <prince.agyeman@intel.com>
---
 .../WhiskeylakeURvp/OpenBoardPkgPcd.dsc               | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/Platform/Intel/WhiskeylakeOpenBoardPkg/WhiskeylakeURvp/OpenBoardPkgPcd.dsc b/Platform/Intel/WhiskeylakeOpenBoardPkg/WhiskeylakeURvp/OpenBoardPkgPcd.dsc
index 906f7b7ade..cfe42883be 100644
--- a/Platform/Intel/WhiskeylakeOpenBoardPkg/WhiskeylakeURvp/OpenBoardPkgPcd.dsc
+++ b/Platform/Intel/WhiskeylakeOpenBoardPkg/WhiskeylakeURvp/OpenBoardPkgPcd.dsc
@@ -54,15 +54,14 @@
   gSiPkgTokenSpaceGuid.PcdTsegSize|0x1000000
 
   #
-  # FSP API mode does not share stack with the boot loader,
-  # so FSP needs more temporary memory for FSP heap + stack size.
+  # When sharing stack with boot loader, FSP only needs small temp ram for heap
   #
-  gIntelFsp2PkgTokenSpaceGuid.PcdFspTemporaryRamSize|0x26000
+  gIntelFsp2PkgTokenSpaceGuid.PcdFspTemporaryRamSize|0x10000
+
   #
-  # FSP API mode does not need to enlarge the boot loader stack size
-  # since the stacks are separate.
+  # Boot loader stack size has to be big enough to executing FSP
   #
-  gSiPkgTokenSpaceGuid.PcdPeiTemporaryRamStackSize|0x20000
+  gSiPkgTokenSpaceGuid.PcdPeiTemporaryRamStackSize|0x28000
 
   gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress|0xE0000000
   gMinPlatformPkgTokenSpaceGuid.PcdPciExpressRegionLength|0x10000000
-- 
2.19.1.windows.1