MdeModulePkg/DxeCapsuleLibFmp: clone ESRT for runtime access

[mirror_edk2.git] / MdeModulePkg / Library / DxeCapsuleLibFmp / DxeCapsuleRuntime.c

diff --git a/MdeModulePkg/Library/DxeCapsuleLibFmp/DxeCapsuleRuntime.c b/MdeModulePkg/Library/DxeCapsuleLibFmp/DxeCapsuleRuntime.c
index 4725d531462cef7f5df9c8246d17e8e568055afb..f94044a409185fb1def509f6f9eb31c5b3e1ba99 100644 (file)
--- a/MdeModulePkg/Library/DxeCapsuleLibFmp/DxeCapsuleRuntime.c
+++ b/MdeModulePkg/Library/DxeCapsuleLibFmp/DxeCapsuleRuntime.c
@@ -2,13 +2,7 @@
   Capsule library runtime support.\r
 \r
   Copyright (c) 2016 - 2017, Intel Corporation. All rights reserved.<BR>\r
-  This program and the accompanying materials\r
-  are licensed and made available under the terms and conditions of the BSD License\r
-  which accompanies this distribution.  The full text of the license may be found at\r
-  http://opensource.org/licenses/bsd-license.php\r
-\r
-  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+  SPDX-License-Identifier: BSD-2-Clause-Patent\r
 \r
 **/\r
 \r
@@ -26,9 +20,10 @@
 #include <Library/UefiRuntimeServicesTableLib.h>\r
 #include <Library/MemoryAllocationLib.h>\r
 \r
-EFI_SYSTEM_RESOURCE_TABLE *mEsrtTable                                     = NULL;\r
-BOOLEAN                   mIsVirtualAddrConverted                         = FALSE;\r
+extern EFI_SYSTEM_RESOURCE_TABLE *mEsrtTable;\r
+extern BOOLEAN                   mIsVirtualAddrConverted;\r
 EFI_EVENT                 mDxeRuntimeCapsuleLibVirtualAddressChangeEvent  = NULL;\r
+EFI_EVENT                 mDxeRuntimeCapsuleLibReadyToBootEvent  = NULL;\r
 \r
 /**\r
   Convert EsrtTable physical address to virtual address.\r
@@ -44,8 +39,28 @@ DxeCapsuleLibVirtualAddressChangeEvent (
   IN  VOID        *Context\r
   )\r
 {\r
-  UINTN                    Index;\r
-  EFI_CONFIGURATION_TABLE  *ConfigEntry;\r
+  gRT->ConvertPointer (EFI_OPTIONAL_PTR, (VOID **)&mEsrtTable);\r
+  mIsVirtualAddrConverted = TRUE;\r
+}\r
+\r
+/**\r
+  Notify function for event group EFI_EVENT_GROUP_READY_TO_BOOT.\r
+\r
+  @param[in]  Event   The Event that is being processed.\r
+  @param[in]  Context The Event Context.\r
+\r
+**/\r
+STATIC\r
+VOID\r
+EFIAPI\r
+DxeCapsuleLibReadyToBootEventNotify (\r
+  IN EFI_EVENT        Event,\r
+  IN VOID             *Context\r
+  )\r
+{\r
+  UINTN                       Index;\r
+  EFI_CONFIGURATION_TABLE     *ConfigEntry;\r
+  EFI_SYSTEM_RESOURCE_TABLE   *EsrtTable;\r
 \r
   //\r
   // Get Esrt table first\r
@@ -65,16 +80,19 @@ DxeCapsuleLibVirtualAddressChangeEvent (
     //\r
     // Search Esrt to check given capsule is qualified\r
     //\r
-    mEsrtTable = (EFI_SYSTEM_RESOURCE_TABLE *) ConfigEntry->VendorTable;\r
+    EsrtTable = (EFI_SYSTEM_RESOURCE_TABLE *) ConfigEntry->VendorTable;\r
+\r
+    mEsrtTable = AllocateRuntimeCopyPool (\r
+                   sizeof (EFI_SYSTEM_RESOURCE_TABLE) +\r
+                   EsrtTable->FwResourceCount * sizeof (EFI_SYSTEM_RESOURCE_ENTRY),\r
+                   EsrtTable);\r
+    ASSERT (mEsrtTable != NULL);\r
 \r
     //\r
-    // Update protocol pointer to Esrt Table.\r
+    // Set FwResourceCountMax to a sane value.\r
     //\r
-    gRT->ConvertPointer (0x00, (VOID**) &(mEsrtTable));\r
+    mEsrtTable->FwResourceCountMax = mEsrtTable->FwResourceCount;\r
   }\r
-\r
-  mIsVirtualAddrConverted = TRUE;\r
-\r
 }\r
 \r
 /**\r
@@ -107,6 +125,19 @@ DxeRuntimeCapsuleLibConstructor (
                   );\r
   ASSERT_EFI_ERROR (Status);\r
 \r
+  //\r
+  // Register notify function to cache the FMP capsule GUIDs at ReadyToBoot.\r
+  //\r
+  Status = gBS->CreateEventEx (\r
+                  EVT_NOTIFY_SIGNAL,\r
+                  TPL_CALLBACK,\r
+                  DxeCapsuleLibReadyToBootEventNotify,\r
+                  NULL,\r
+                  &gEfiEventReadyToBootGuid,\r
+                  &mDxeRuntimeCapsuleLibReadyToBootEvent\r
+                  );\r
+  ASSERT_EFI_ERROR (Status);\r
+\r
   return EFI_SUCCESS;\r
 }\r
 \r
@@ -133,5 +164,11 @@ DxeRuntimeCapsuleLibDestructor (
   Status = gBS->CloseEvent (mDxeRuntimeCapsuleLibVirtualAddressChangeEvent);\r
   ASSERT_EFI_ERROR (Status);\r
 \r
+  //\r
+  // Close the ReadyToBoot event.\r
+  //\r
+  Status = gBS->CloseEvent (mDxeRuntimeCapsuleLibReadyToBootEvent);\r
+  ASSERT_EFI_ERROR (Status);\r
+\r
   return EFI_SUCCESS;\r
 }\r