1 /** @file 2 Source file for FSP notify phase PEI module 3 4 Copyright (c) 2016, Intel Corporation. All rights reserved. 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 #include "FspNotifyPhasePeim.h" 15 16 /** 17 18 This function waits for FSP notify. 19 20 @param This Entry point for DXE IPL PPI. 21 @param PeiServices General purpose services available to every PEIM. 22 @param HobList Address to the Pei HOB list. 23 24 @return EFI_SUCCESS This function never returns. 25 26 **/ 27 EFI_STATUS 28 EFIAPI 29 WaitForNotify ( 30 IN CONST EFI_DXE_IPL_PPI *This, 31 IN EFI_PEI_SERVICES **PeiServices, 32 IN EFI_PEI_HOB_POINTERS HobList 33 ); 34 35 CONST EFI_DXE_IPL_PPI mDxeIplPpi = { 36 WaitForNotify 37 }; 38 39 CONST EFI_PEI_PPI_DESCRIPTOR mInstallDxeIplPpi = { 40 EFI_PEI_PPI_DESCRIPTOR_PPI, 41 &gEfiDxeIplPpiGuid, 42 (VOID *) &mDxeIplPpi 43 }; 44 45 CONST EFI_PEI_PPI_DESCRIPTOR gEndOfPeiSignalPpi = { 46 (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST), 47 &gEfiEndOfPeiSignalPpiGuid, 48 NULL 49 }; 50 51 /** 52 53 This function waits for FSP notify. 54 55 @param This Entry point for DXE IPL PPI. 56 @param PeiServices General purpose services available to every PEIM. 57 @param HobList Address to the Pei HOB list. 58 59 @return EFI_SUCCESS This function never returns. 60 61 **/ 62 EFI_STATUS 63 EFIAPI 64 WaitForNotify ( 65 IN CONST EFI_DXE_IPL_PPI *This, 66 IN EFI_PEI_SERVICES **PeiServices, 67 IN EFI_PEI_HOB_POINTERS HobList 68 ) 69 { 70 EFI_STATUS Status; 71 72 DEBUG ((DEBUG_INFO | DEBUG_INIT, "FSP HOB is located at 0x%08X\n", HobList)); 73 74 // 75 // End of PEI phase signal 76 // 77 Status = PeiServicesInstallPpi (&gEndOfPeiSignalPpi); 78 ASSERT_EFI_ERROR (Status); 79 80 // 81 // Give control back to BootLoader after FspSiliconInit 82 // 83 DEBUG ((DEBUG_INFO | DEBUG_INIT, "FSP is waiting for NOTIFY\n")); 84 FspSiliconInitDone2 (EFI_SUCCESS); 85 86 // 87 // BootLoader called FSP again through NotifyPhase 88 // 89 FspWaitForNotify (); 90 91 // 92 // Should not come here 93 // 94 while (TRUE) { 95 DEBUG ((DEBUG_ERROR, "No FSP API should be called after FSP is DONE!\n")); 96 SetFspApiReturnStatus (EFI_UNSUPPORTED); 97 Pei2LoaderSwitchStack (); 98 } 99 100 return EFI_SUCCESS; 101 } 102 103 /** 104 FSP notify phase PEI module entry point 105 106 @param[in] FileHandle Not used. 107 @param[in] PeiServices General purpose services available to every PEIM. 108 109 @retval EFI_SUCCESS The function completes successfully 110 @retval EFI_OUT_OF_RESOURCES Insufficient resources to create database 111 **/ 112 EFI_STATUS 113 FspNotifyPhasePeimEntryPoint ( 114 IN EFI_PEI_FILE_HANDLE FileHandle, 115 IN CONST EFI_PEI_SERVICES **PeiServices 116 ) 117 { 118 EFI_STATUS Status; 119 VOID *OldDxeIplPpi; 120 EFI_PEI_PPI_DESCRIPTOR *OldDescriptor; 121 122 DEBUG ((DEBUG_INFO | DEBUG_INIT, "The entry of FspNotificationPeim\n")); 123 124 // 125 // Locate old DXE IPL PPI 126 // 127 Status = PeiServicesLocatePpi ( 128 &gEfiDxeIplPpiGuid, 129 0, 130 &OldDescriptor, 131 &OldDxeIplPpi 132 ); 133 ASSERT_EFI_ERROR (Status); 134 135 // 136 // Re-install the DXE IPL PPI to wait for notify 137 // 138 Status = PeiServicesReInstallPpi (OldDescriptor, &mInstallDxeIplPpi); 139 ASSERT_EFI_ERROR (Status); 140 141 return EFI_SUCCESS; 142 } 143
