[edk2-devel] [PATCH 05/14] MdeModulePkg: Update Dxe to handle unaccepted memory type

[Min Xu]

From: Min M Xu <min.m.xu at intel.com>

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3937

Unaccepted memory is a kind of new memory type,
CoreInitializeGcdServices() and CoreGetMemoryMap() are updated to handle
the unaccepted memory type.

Ref: microsoft/mu_basecore at 97e9c31

Cc: Jian J Wang <jian.j.wang at intel.com>
Cc: Liming Gao <gaoliming at byosoft.com.cn>
Cc: Ray Ni <ray.ni at intel.com>
Cc: Erdem Aktas <erdemaktas at google.com>
Cc: Gerd Hoffmann <kraxel at redhat.com>
Cc: James Bottomley <jejb at linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao at intel.com>
Cc: Tom Lendacky <thomas.lendacky at amd.com>
Signed-off-by: Min Xu <min.m.xu at intel.com>
---
 MdeModulePkg/Core/Dxe/Gcd/Gcd.c  |  5 +++++
 MdeModulePkg/Core/Dxe/Mem/Page.c | 28 ++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)

diff --git a/MdeModulePkg/Core/Dxe/Gcd/Gcd.c b/MdeModulePkg/Core/Dxe/Gcd/Gcd.c
index 3763467bdbc0..b82fe11cb0f3 100644
--- a/MdeModulePkg/Core/Dxe/Gcd/Gcd.c
+++ b/MdeModulePkg/Core/Dxe/Gcd/Gcd.c
@@ -8,6 +8,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
 
+#include <Pi/PrePiHob.h>
 #include "DxeMain.h"
 #include "Gcd.h"
 #include "Mem/HeapGuard.h"
@@ -103,6 +104,7 @@ GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8  *mGcdMemoryTypeNames[] = {
   "MMIO     ",  // EfiGcdMemoryTypeMemoryMappedIo
   "PersisMem",  // EfiGcdMemoryTypePersistent
   "MoreRelia",  // EfiGcdMemoryTypeMoreReliable
+  "Unaccepte",  // EfiGcdMemoryTypeUnaccepted
   "Unknown  "   // EfiGcdMemoryTypeMaximum
 };
 
@@ -2600,6 +2602,9 @@ CoreInitializeGcdServices (
         case EFI_RESOURCE_MEMORY_RESERVED:
           GcdMemoryType = EfiGcdMemoryTypeReserved;
           break;
+        case EFI_RESOURCE_MEMORY_UNACCEPTED:
+          GcdMemoryType = EfiGcdMemoryTypeUnaccepted;
+          break;
         case EFI_RESOURCE_IO:
           GcdIoType = EfiGcdIoTypeIo;
           break;
diff --git a/MdeModulePkg/Core/Dxe/Mem/Page.c b/MdeModulePkg/Core/Dxe/Mem/Page.c
index 47d4c5d92e15..008efdf397e0 100644
--- a/MdeModulePkg/Core/Dxe/Mem/Page.c
+++ b/MdeModulePkg/Core/Dxe/Mem/Page.c
@@ -61,6 +61,7 @@ EFI_MEMORY_TYPE_STATISTICS  mMemoryTypeStatistics[EfiMaxMemoryType + 1] = {
   { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE },  // EfiMemoryMappedIOPortSpace
   { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE,  TRUE  },  // EfiPalCode
   { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE },  // EfiPersistentMemory
+  { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE,  FALSE },  // EfiUnacceptedMemory
   { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }   // EfiMaxMemoryType
 };
 
@@ -83,6 +84,7 @@ EFI_MEMORY_TYPE_INFORMATION  gMemoryTypeInformation[EfiMaxMemoryType + 1] = {
   { EfiMemoryMappedIOPortSpace, 0 },
   { EfiPalCode,                 0 },
   { EfiPersistentMemory,        0 },
+  { EfiGcdMemoryTypeUnaccepted, 0 },
   { EfiMaxMemoryType,           0 }
 };
 //
@@ -1947,6 +1949,32 @@ CoreGetMemoryMap (
       MemoryMap = MergeMemoryMapDescriptor (MemoryMapStart, MemoryMap, Size);
     }
 
+    if (MergeGcdMapEntry.GcdMemoryType == EfiGcdMemoryTypeUnaccepted) {
+      //
+      // Page Align GCD range is required. When it is converted to EFI_MEMORY_DESCRIPTOR,
+      // it will be recorded as page PhysicalStart and NumberOfPages.
+      //
+      ASSERT ((MergeGcdMapEntry.BaseAddress & EFI_PAGE_MASK) == 0);
+      ASSERT (((MergeGcdMapEntry.EndAddress - MergeGcdMapEntry.BaseAddress + 1) & EFI_PAGE_MASK) == 0);
+
+      //
+      // Create EFI_MEMORY_DESCRIPTOR for every Unaccepted GCD entries
+      //
+      MemoryMap->PhysicalStart = MergeGcdMapEntry.BaseAddress;
+      MemoryMap->VirtualStart  = 0;
+      MemoryMap->NumberOfPages = RShiftU64 ((MergeGcdMapEntry.EndAddress - MergeGcdMapEntry.BaseAddress + 1), EFI_PAGE_SHIFT);
+      MemoryMap->Attribute     = MergeGcdMapEntry.Attributes |
+                                 (MergeGcdMapEntry.Capabilities & (EFI_MEMORY_RP | EFI_MEMORY_WP | EFI_MEMORY_XP | EFI_MEMORY_RO |
+                                                                   EFI_MEMORY_UC | EFI_MEMORY_UCE | EFI_MEMORY_WC | EFI_MEMORY_WT | EFI_MEMORY_WB));
+      MemoryMap->Type = EfiUnacceptedMemory;
+
+      //
+      // Check to see if the new Memory Map Descriptor can be merged with an
+      // existing descriptor if they are adjacent and have the same attributes
+      //
+      MemoryMap = MergeMemoryMapDescriptor (MemoryMapStart, MemoryMap, Size);
+    }
+
     if (Link == &mGcdMemorySpaceMap) {
       //
       // break loop when arrive at head.
-- 
2.29.2.windows.2



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