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 4efe14313ca5dddd53cab65f733a9f94cbeb8c40..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
   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
 \r
   if ((MemoryType != EfiLoaderCode) &&\r
       (MemoryType != EfiLoaderData) &&\r


@@ -153,6 +155,20 @@ PeiAllocatePages (
     return EFI_INVALID_PARAMETER;\r
   }\r
 \r
     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
   PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);\r
   Hob.Raw     = PrivateData->HobList.Raw;\r
   \r


@@ -176,9 +192,27 @@ PeiAllocatePages (
   }\r
 \r
   //\r
   }\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
   //\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
 \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
   //\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
   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