1 /** @file 2 3 Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR> 4 5 This program and the accompanying materials are licensed and made available under 7 the terms and conditions of the BSD License that accompanies this distribution. 9 The full text of the license may be found at 11 http://opensource.org/licenses/bsd-license.php. 13 15 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 17 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 19 21 23 Module Name: 24 25 PlatformCpuInfoDxe.c 26 27 Abstract: 28 Platform Cpu Info driver to public platform related HOB data 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
