1 /** @file 2 This PEIM will parse the hoblist from fsp and report them into pei core. 3 This file contains the main entrypoint of the PEIM. 4 5 Copyright (c) 2014, Intel Corporation. All rights reserved.<BR> 6 This program and the accompanying materials 7 are licensed and made available under the terms and conditions of the BSD License 8 which accompanies this distribution. The full text of the license may be found at 9 http://opensource.org/licenses/bsd-license.php. 10 11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 13 14 **/ 15 16 17 #include <PiPei.h> 18 #include <Library/DebugLib.h> 19 20 #include <Ppi/TopOfTemporaryRam.h> 21 #include <Ppi/SecPlatformInformation.h> 22 23 /** 24 Save BIST value before call FspInit. 25 26 @param Bist BIST value. 27 **/ 28 VOID 29 AsmSaveBistValue ( 30 IN UINT32 Bist 31 ); 32 33 /** 34 Save Ticker value before call FspInit. 35 36 @param Ticker Ticker value. 37 **/ 38 VOID 39 AsmSaveTickerValue ( 40 IN UINT64 Ticker 41 ); 42 43 /** 44 Save SEC context before call FspInit. 45 46 @param PeiServices Pointer to PEI Services Table. 47 **/ 48 VOID 49 EFIAPI 50 SaveSecContext ( 51 IN CONST EFI_PEI_SERVICES **PeiServices 52 ) 53 { 54 UINT32 *Bist; 55 UINT64 *Ticker; 56 UINT32 Size; 57 UINT32 Count; 58 UINT32 TopOfTemporaryRam; 59 VOID *TopOfTemporaryRamPpi; 60 EFI_STATUS Status; 61 62 DEBUG ((DEBUG_INFO, "SaveSecContext - 0x%x\n", PeiServices)); 63 64 Status = (*PeiServices)->LocatePpi ( 65 PeiServices, 66 &gTopOfTemporaryRamPpiGuid, 67 0, 68 NULL, 69 (VOID **) &TopOfTemporaryRamPpi 70 ); 71 if (EFI_ERROR (Status)) { 72 return ; 73 } 74 75 DEBUG ((DEBUG_INFO, "TopOfTemporaryRamPpi - 0x%x\n", TopOfTemporaryRamPpi)); 76 77 // 78 // The entries of BIST information, together with the number of them, 79 // reside in the bottom of stack, left untouched by normal stack operation. 80 // This routine copies the BIST information to the buffer pointed by 81 // PlatformInformationRecord for output. 82 // 83 // |--------------| <- TopOfTemporaryRam 84 // |Number of BSPs| 85 // |--------------| 86 // | BIST | 87 // |--------------| 88 // | .... | 89 // |--------------| 90 // | TSC[63:32] | 91 // |--------------| 92 // | TSC[31:00] | 93 // |--------------| 94 // 95 96 TopOfTemporaryRam = (UINT32)(UINTN)TopOfTemporaryRamPpi - sizeof(UINT32); 97 TopOfTemporaryRam -= sizeof(UINT32) * 2; 98 DEBUG ((DEBUG_INFO, "TopOfTemporaryRam - 0x%x\n", TopOfTemporaryRam)); 99 Count = *(UINT32 *)(UINTN)(TopOfTemporaryRam - sizeof(UINT32)); 100 DEBUG ((DEBUG_INFO, "Count - 0x%x\n", Count)); 101 Size = Count * sizeof (IA32_HANDOFF_STATUS); 102 DEBUG ((DEBUG_INFO, "Size - 0x%x\n", Size)); 103 104 Bist = (UINT32 *)(UINTN)(TopOfTemporaryRam - sizeof(UINT32) - Size); 105 DEBUG ((DEBUG_INFO, "Bist - 0x%x\n", *Bist)); 106 Ticker = (UINT64 *)(UINTN)(TopOfTemporaryRam - sizeof(UINT32) - Size - sizeof(UINT64)); 107 DEBUG ((DEBUG_INFO, "Ticker - 0x%lx\n", *Ticker)); 108 109 // 110 // Just need record BSP 111 // 112 AsmSaveBistValue (*Bist); 113 AsmSaveTickerValue (*Ticker); 114 } 115
