EmulatorPkg/FirmwareVolumePei/FirmwareVolumePei.c

   1 /*++ @file
   2
   3 Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
   4 Portions copyright (c) 2011, Apple Inc. All rights reserved.
   5 SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 #include "PiPei.h"
  10 #include <Ppi/EmuThunk.h>
  11 #include <Library/DebugLib.h>
  12 #include <Library/PeimEntryPoint.h>
  13 #include <Library/HobLib.h>
  14 #include <Library/PeiServicesLib.h>
  15 #include <Library/PeiServicesTablePointerLib.h>
  16 #include <Library/PcdLib.h>
  17
  18 EFI_STATUS
  19 EFIAPI
  20 PeimInitializeFirmwareVolumePei (
  21   IN       EFI_PEI_FILE_HANDLE  FileHandle,
  22   IN CONST EFI_PEI_SERVICES     **PeiServices
  23   )
  24
  25 /*++
  26
  27 Routine Description:
  28   Perform a call-back into the SEC simulator to get address of the Firmware Hub
  29
  30 Arguments:
  31   FfsHeader   - Ffs Header available to every PEIM
  32   PeiServices - General purpose services available to every PEIM.
  33
  34 Returns:
  35   None
  36
  37 **/
  38 {
  39   EFI_STATUS                  Status;
  40   EFI_PEI_PPI_DESCRIPTOR      *PpiDescriptor;
  41   EMU_THUNK_PPI               *Thunk;
  42   EFI_PHYSICAL_ADDRESS        FdBase;
  43   EFI_PHYSICAL_ADDRESS        FdFixUp;
  44   EFI_FIRMWARE_VOLUME_HEADER  *FvHeader;
  45   UINT64                      FdSize;
  46   UINTN                       Index;
  47
  48   DEBUG ((DEBUG_ERROR, "Unix Firmware Volume PEIM Loaded\n"));
  49
  50   //
  51   // Get the Fwh Information PPI
  52   //
  53   Status = PeiServicesLocatePpi (
  54              &gEmuThunkPpiGuid,   // GUID
  55              0,                   // INSTANCE
  56              &PpiDescriptor,      // EFI_PEI_PPI_DESCRIPTOR
  57              (VOID **)&Thunk      // PPI
  58              );
  59   ASSERT_EFI_ERROR (Status);
  60
  61   Index = 0;
  62   do {
  63     //
  64     // Get information about all the FD's in the system
  65     //
  66     Status = Thunk->FirmwareDevices (Index, &FdBase, &FdSize, &FdFixUp);
  67     if (!EFI_ERROR (Status)) {
  68       //
  69       // Assume the FD starts with an FV header
  70       //
  71       FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)FdBase;
  72
  73       //
  74       // Make an FV Hob for the first FV in the FD
  75       //
  76       BuildFvHob (FdBase, FvHeader->FvLength);
  77
  78       if (Index == 0) {
  79         //
  80         // Assume the first FD was produced by the NT32.DSC
  81         //  All these strange offests are needed to keep in
  82         //  sync with the FlashMap and NT32.dsc file
  83         //
  84         BuildResourceDescriptorHob (
  85           EFI_RESOURCE_FIRMWARE_DEVICE,
  86           (EFI_RESOURCE_ATTRIBUTE_PRESENT | EFI_RESOURCE_ATTRIBUTE_INITIALIZED | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE),
  87           FdBase,
  88           (
  89            FvHeader->FvLength +
  90            PcdGet32 (PcdFlashNvStorageVariableSize) +
  91            PcdGet32 (PcdFlashNvStorageFtwWorkingSize) +
  92            PcdGet32 (PcdFlashNvStorageFtwSpareSize) +
  93            PcdGet32 (PcdEmuFlashNvStorageEventLogSize)
  94           )
  95           );
  96
  97         //
  98         // Hard code the address of the spare block and variable services.
  99         //  Assume it's a hard coded offset from FV0 in FD0.
 100         //
 101         FdSize =
 102           PcdGet32 (PcdFlashNvStorageVariableSize) +
 103           PcdGet32 (PcdFlashNvStorageFtwWorkingSize) +
 104           PcdGet32 (PcdFlashNvStorageFtwSpareSize) +
 105           PcdGet32 (PcdEmuFlashNvStorageEventLogSize);
 106
 107         BuildFvHob (FdFixUp + PcdGet64 (PcdEmuFlashNvStorageVariableBase), FdSize);
 108       } else {
 109         //
 110         // For other FD's just map them in.
 111         //
 112         BuildResourceDescriptorHob (
 113           EFI_RESOURCE_FIRMWARE_DEVICE,
 114           (EFI_RESOURCE_ATTRIBUTE_PRESENT | EFI_RESOURCE_ATTRIBUTE_INITIALIZED | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE),
 115           FdBase,
 116           FdSize
 117           );
 118       }
 119     }
 120
 121     Index++;
 122   } while (!EFI_ERROR (Status));
 123
 124   return Status;
 125 }