MdeModulePkg/PeiCore: honour minimal runtime allocation granularity

[mirror_edk2.git] / MdeModulePkg / Core / Pei / Memory / MemoryServices.c

diff --git a/MdeModulePkg/Core/Pei/Memory/MemoryServices.c b/MdeModulePkg/Core/Pei/Memory/MemoryServices.c
index 2f9b9dea3149202a0c0d7fcd13a5135bdb443e8d..719372e0612801176d6bd47d68c0c12b791b69f0 100644 (file)
--- a/MdeModulePkg/Core/Pei/Memory/MemoryServices.c
+++ b/MdeModulePkg/Core/Pei/Memory/MemoryServices.c
@@ -140,6 +140,8 @@ PeiAllocatePages (
   EFI_PHYSICAL_ADDRESS                    *FreeMemoryTop;\r
   EFI_PHYSICAL_ADDRESS                    *FreeMemoryBottom;\r
   UINTN                                   RemainingPages;\r
+  UINTN                                   Granularity;\r
+  UINTN                                   Padding;\r
 \r
   if ((MemoryType != EfiLoaderCode) &&\r
       (MemoryType != EfiLoaderData) &&\r
@@ -153,6 +155,20 @@ PeiAllocatePages (
     return EFI_INVALID_PARAMETER;\r
   }\r
 \r
+  Granularity = DEFAULT_PAGE_ALLOCATION_GRANULARITY;\r
+\r
+  if  (RUNTIME_PAGE_ALLOCATION_GRANULARITY > DEFAULT_PAGE_ALLOCATION_GRANULARITY &&\r
+       (MemoryType == EfiACPIReclaimMemory   ||\r
+        MemoryType == EfiACPIMemoryNVS       ||\r
+        MemoryType == EfiRuntimeServicesCode ||\r
+        MemoryType == EfiRuntimeServicesData)) {\r
+\r
+    Granularity = RUNTIME_PAGE_ALLOCATION_GRANULARITY;\r
+\r
+    DEBUG ((DEBUG_INFO, "AllocatePages: aligning allocation to %d KB\n",\r
+      Granularity / SIZE_1KB));\r
+  }\r
+\r
   PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);\r
   Hob.Raw     = PrivateData->HobList.Raw;\r
   \r
@@ -176,9 +192,27 @@ PeiAllocatePages (
   }\r
 \r
   //\r
-  // Check to see if on 4k boundary, If not aligned, make the allocation aligned.\r
+  // Check to see if on correct boundary for the memory type.\r
+  // If not aligned, make the allocation aligned.\r
   //\r
-  *(FreeMemoryTop) -= *(FreeMemoryTop) & 0xFFF;\r
+  Padding = *(FreeMemoryTop) & (Granularity - 1);\r
+  if ((UINTN) (*FreeMemoryTop - *FreeMemoryBottom) < Padding) {\r
+    DEBUG ((DEBUG_ERROR, "AllocatePages failed: Out of space after padding.\n"));\r
+    return EFI_OUT_OF_RESOURCES;\r
+  }\r
+\r
+  *(FreeMemoryTop) -= Padding;\r
+  if (Padding >= EFI_PAGE_SIZE) {\r
+    //\r
+    // Create a memory allocation HOB to cover\r
+    // the pages that we will lose to rounding\r
+    //\r
+    BuildMemoryAllocationHob (\r
+      *(FreeMemoryTop),\r
+      Padding & ~(UINTN)EFI_PAGE_MASK,\r
+      EfiConventionalMemory\r
+      );\r
+  }\r
 \r
   //\r
   // Verify that there is sufficient memory to satisfy the allocation.\r
@@ -192,6 +226,7 @@ PeiAllocatePages (
   //\r
   // The number of remaining pages needs to be greater than or equal to that of the request pages.\r
   //\r
+  Pages = ALIGN_VALUE (Pages, EFI_SIZE_TO_PAGES (Granularity));\r
   if (RemainingPages < Pages) {\r
     DEBUG ((EFI_D_ERROR, "AllocatePages failed: No 0x%lx Pages is available.\n", (UINT64) Pages));\r
     DEBUG ((EFI_D_ERROR, "There is only left 0x%lx pages memory resource to be allocated.\n", (UINT64) RemainingPages));\r
@@ -222,7 +257,7 @@ PeiAllocatePages (
 \r
 /**\r
 \r
-  Pool allocation service. Before permenent memory is discoveried, the pool will \r
+  Pool allocation service. Before permanent memory is discoveried, the pool will\r
   be allocated the heap in the temporary memory. Genenrally, the size of heap in temporary \r
   memory does not exceed to 64K, so the biggest pool size could be allocated is \r
   64K.\r