1 /** @file 2 Build FV related hobs for platform. 3 4 Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR> 5 This program and the accompanying materials 6 are licensed and made available under the terms and conditions of the BSD License 7 which accompanies this distribution. The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license.php 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 **/ 14 15 #include "PiPei.h" 16 #include "Platform.h" 17 #include <Library/DebugLib.h> 18 #include <Library/HobLib.h> 19 #include <Library/PeiServicesLib.h> 20 #include <Library/PcdLib.h> 21 22 23 /** 24 Publish PEI & DXE (Decompressed) Memory based FVs to let PEI 25 and DXE know about them. 26 27 @retval EFI_SUCCESS Platform PEI FVs were initialized successfully. 28 29 **/ 30 EFI_STATUS 31 PeiFvInitialization ( 32 VOID 33 ) 34 { 35 BOOLEAN SecureS3Needed; 36 37 DEBUG ((EFI_D_INFO, "Platform PEI Firmware Volume Initialization\n")); 38 39 // 40 // Create a memory allocation HOB for the PEI FV. 41 // 42 // Allocate as ACPI NVS is S3 is supported 43 // 44 BuildMemoryAllocationHob ( 45 PcdGet32 (PcdOvmfPeiMemFvBase), 46 PcdGet32 (PcdOvmfPeiMemFvSize), 47 mS3Supported ? EfiACPIMemoryNVS : EfiBootServicesData 48 ); 49 50 // 51 // Let DXE know about the DXE FV 52 // 53 BuildFvHob (PcdGet32 (PcdOvmfDxeMemFvBase), PcdGet32 (PcdOvmfDxeMemFvSize)); 54 55 SecureS3Needed = mS3Supported && FeaturePcdGet (PcdSmmSmramRequire); 56 57 // 58 // Create a memory allocation HOB for the DXE FV. 59 // 60 // If "secure" S3 is needed, then SEC will decompress both PEI and DXE 61 // firmware volumes at S3 resume too, hence we need to keep away the OS from 62 // DXEFV as well. Otherwise we only need to keep away DXE itself from the 63 // DXEFV area. 64 // 65 BuildMemoryAllocationHob ( 66 PcdGet32 (PcdOvmfDxeMemFvBase), 67 PcdGet32 (PcdOvmfDxeMemFvSize), 68 SecureS3Needed ? EfiACPIMemoryNVS : EfiBootServicesData 69 ); 70 71 // 72 // Additionally, said decompression will use temporary memory above the end 73 // of DXEFV, so let's keep away the OS from there too. 74 // 75 if (SecureS3Needed) { 76 UINT32 DxeMemFvEnd; 77 78 DxeMemFvEnd = PcdGet32 (PcdOvmfDxeMemFvBase) + 79 PcdGet32 (PcdOvmfDxeMemFvSize); 80 BuildMemoryAllocationHob ( 81 DxeMemFvEnd, 82 PcdGet32 (PcdOvmfDecompressionScratchEnd) - DxeMemFvEnd, 83 EfiACPIMemoryNVS 84 ); 85 } 86 87 // 88 // Let PEI know about the DXE FV so it can find the DXE Core 89 // 90 PeiServicesInstallFvInfoPpi ( 91 NULL, 92 (VOID *)(UINTN) PcdGet32 (PcdOvmfDxeMemFvBase), 93 PcdGet32 (PcdOvmfDxeMemFvSize), 94 NULL, 95 NULL 96 ); 97 98 return EFI_SUCCESS; 99 } 100 101
