From 8028b2907e20b21cd7d69639a36ac82a77c81dc1 Mon Sep 17 00:00:00 2001
From: Marcello Sylvester Bauer <marcello.bauer@9elements.com>
Date: Wed, 22 Jul 2020 11:00:29 +0200
Subject: UefiPayloadPkg: Support variable size MMCONF space

The default size is still 256MiB, but will be overwritten by
UefiPayloadPkg with the real MMCONF size.

e.g.: On embedded AMD platforms the MMCONF window size is usually
      only 64MiB.

Fixes crash on platforms not exposing 256 buses.
Tested on:
* AMD Stoney Ridge

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Marcello Sylvester Bauer <marcello.bauer@9elements.com>
Cc: Patrick Rudolph <patrick.rudolph@9elements.com>
Cc: Christian Walter <christian.walter@9elements.com>
Cc: Maurice Ma <maurice.ma@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
Reviewed-by: Guo Dong <guo.dong@intel.com>
---
 UefiPayloadPkg/BlSupportDxe/BlSupportDxe.c   | 4 +++-
 UefiPayloadPkg/BlSupportDxe/BlSupportDxe.inf | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

(limited to 'UefiPayloadPkg/BlSupportDxe')

diff --git a/UefiPayloadPkg/BlSupportDxe/BlSupportDxe.c b/UefiPayloadPkg/BlSupportDxe/BlSupportDxe.c
index a3974dcc02..a746d0581e 100644
--- a/UefiPayloadPkg/BlSupportDxe/BlSupportDxe.c
+++ b/UefiPayloadPkg/BlSupportDxe/BlSupportDxe.c
@@ -155,13 +155,15 @@ BlDxeEntryPoint (
   }
 
   //
-  // Set PcdPciExpressBaseAddress by HOB info
+  // Set PcdPciExpressBaseAddress and PcdPciExpressBaseSize by HOB info
   //
   GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);
   if (GuidHob != NULL) {
     AcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob);
     Status = PcdSet64S (PcdPciExpressBaseAddress, AcpiBoardInfo->PcieBaseAddress);
     ASSERT_EFI_ERROR (Status);
+    Status = PcdSet64S (PcdPciExpressBaseSize, AcpiBoardInfo->PcieBaseSize);
+    ASSERT_EFI_ERROR (Status);
   }
 
   return EFI_SUCCESS;
diff --git a/UefiPayloadPkg/BlSupportDxe/BlSupportDxe.inf b/UefiPayloadPkg/BlSupportDxe/BlSupportDxe.inf
index 1371d5eb79..cebc811355 100644
--- a/UefiPayloadPkg/BlSupportDxe/BlSupportDxe.inf
+++ b/UefiPayloadPkg/BlSupportDxe/BlSupportDxe.inf
@@ -54,6 +54,7 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdSetupVideoHorizontalResolution
   gEfiMdeModulePkgTokenSpaceGuid.PcdSetupVideoVerticalResolution
   gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress
+  gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseSize
 
 [Depex]
   TRUE
-- 
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