1 /** @file 2 3 Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR> 4 5 6 This program and the accompanying materials are licensed and made available under 7 8 the terms and conditions of the BSD License that accompanies this distribution. 9 10 The full text of the license may be found at 11 12 http://opensource.org/licenses/bsd-license.php. 13 14 15 16 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 17 18 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 19 20 21 22 23 Module Name: 24 25 PlatformCpuInfoDxe.c 26 27 Abstract: 28 Platform Cpu Info driver to public platform related HOB data PlatformCpuInfoInit(IN EFI_HANDLE ImageHandle,IN EFI_SYSTEM_TABLE * SystemTable)29 30 --*/ 31 32 #include "PlatformCpuInfoDxe.h" 33 34 CHAR16 EfiPlatformCpuInfoVariable[] = L"PlatformCpuInfo"; 35 36 EFI_STATUS 37 EFIAPI 38 PlatformCpuInfoInit ( 39 IN EFI_HANDLE ImageHandle, 40 IN EFI_SYSTEM_TABLE *SystemTable 41 ) 42 { 43 EFI_STATUS Status; 44 EFI_PLATFORM_CPU_INFO *PlatformCpuInfoPtr; 45 EFI_PEI_HOB_POINTERS GuidHob; 46 47 // 48 // Get Platform Cpu Info HOB 49 // 50 GuidHob.Raw = GetHobList (); 51 while ((GuidHob.Raw = GetNextGuidHob (&gEfiPlatformCpuInfoGuid, GuidHob.Raw)) != NULL) { 52 PlatformCpuInfoPtr = GET_GUID_HOB_DATA (GuidHob.Guid); 53 GuidHob.Raw = GET_NEXT_HOB (GuidHob); 54 55 // 56 // Write the Platform CPU Info to volatile memory for runtime purposes. 57 // This must be done in its own driver because SetVariable protocol is dependent on chipset, 58 // which is dependent on CpuIo, PlatformInfo, and Metronome. 59 // 60 Status = gRT->SetVariable( 61 EfiPlatformCpuInfoVariable, 62 &gEfiVlv2VariableGuid, 63 EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS, 64 sizeof(EFI_PLATFORM_CPU_INFO), 65 PlatformCpuInfoPtr 66 ); 67 if (EFI_ERROR(Status)) { 68 return Status; 69 } 70 } 71 72 return EFI_SUCCESS; 73 } 74 75