Nt32Pkg/WinNtFirmwareVolumePei/WinntFwh.c

   1 /*++
   2
   3 Copyright (c) 2006, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13   WinNtFwh.c
  14
  15 Abstract:
  16   PEIM to abstract construction of firmware volume in a Windows NT environment.
  17
  18 Revision History
  19
  20 --*/
  21
  22 //
  23 // The package level header files this module uses
  24 //
  25 #include <PiPei.h>
  26 #include <WinNtPeim.h>
  27 //
  28 // The protocols, PPI and GUID defintions for this module
  29 //
  30 #include <Ppi/NtFwh.h>
  31 //
  32 // The Library classes this module consumes
  33 //
  34 #include <Library/DebugLib.h>
  35 #include <Library/PeimEntryPoint.h>
  36 #include <Library/HobLib.h>
  37 #include <Library/PcdLib.h>
  38
  39 EFI_STATUS
  40 EFIAPI
  41 PeimInitializeWinNtFwh (
  42   IN EFI_FFS_FILE_HEADER       *FfsHeader,
  43   IN EFI_PEI_SERVICES          **PeiServices
  44   )
  45 /*++
  46
  47 Routine Description:
  48   Perform a call-back into the SEC simulator to get address of the Firmware Hub
  49
  50 Arguments:
  51   FfsHeader   - Ffs Header availible to every PEIM
  52   PeiServices - General purpose services available to every PEIM.
  53
  54 Returns:
  55   None
  56
  57 --*/
  58 {
  59   EFI_STATUS                  Status;
  60   EFI_PEI_PPI_DESCRIPTOR      *PpiDescriptor;
  61   NT_FWH_PPI                  *FwhPpi;
  62   EFI_PHYSICAL_ADDRESS        FdBase;
  63   EFI_FIRMWARE_VOLUME_HEADER  *FvHeader;
  64   UINT64                      FdSize;
  65   UINTN                       Index;
  66
  67   DEBUG ((EFI_D_ERROR, "NT 32 Firmware Volume PEIM Loaded\n"));
  68
  69   //
  70   // Get the Fwh Information PPI
  71   //
  72   Status = (**PeiServices).LocatePpi (
  73                             PeiServices,
  74                             &gNtFwhPpiGuid, // GUID
  75                             0,              // INSTANCE
  76                             &PpiDescriptor, // EFI_PEI_PPI_DESCRIPTOR
  77                             &FwhPpi         // PPI
  78                             );
  79   ASSERT_EFI_ERROR (Status);
  80
  81   Index = 0;
  82   do {
  83     //
  84     // Get information about all the FD's in the system
  85     //
  86     Status = FwhPpi->NtFwh (Index, &FdBase, &FdSize);
  87     if (!EFI_ERROR (Status)) {
  88       //
  89       // Assume the FD starts with an FV header
  90       //
  91       FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) (UINTN) FdBase;
  92
  93       //
  94       // Make an FV Hob for the first FV in the FD
  95       //
  96       BuildFvHob (FdBase, FvHeader->FvLength);
  97
  98       if (Index == 0) {
  99         //
 100         // Assume the first FD was produced by the NT32.DSC
 101         //  All these strange offests are needed to keep in
 102         //  sync with the FlashMap and NT32.dsc file
 103         //
 104         BuildResourceDescriptorHob (
 105           EFI_RESOURCE_FIRMWARE_DEVICE,
 106           (EFI_RESOURCE_ATTRIBUTE_PRESENT | EFI_RESOURCE_ATTRIBUTE_INITIALIZED | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE),
 107           FdBase,
 108           (
 109             FvHeader->FvLength +
 110             PcdGet32 (PcdFlashNvStorageVariableSize) +
 111             PcdGet32 (PcdFlashNvStorageFtwWorkingSize) +
 112             PcdGet32 (PcdFlashNvStorageFtwSpareSize) +
 113             PcdGet32 (PcdWinNtFlashNvStorageEventLogSize)
 114           )
 115           );
 116         //
 117         // Hard code the address of the spare block and variable services.
 118         //  Assume it's a hard coded offset from FV0 in FD0.
 119         //
 120         FdBase  = FdBase + PcdGet32 (PcdWinNtFlashNvStorageVariableBase);
 121         FdSize  =
 122           PcdGet32 (PcdFlashNvStorageVariableSize) +
 123           PcdGet32 (PcdFlashNvStorageFtwWorkingSize) +
 124           PcdGet32 (PcdFlashNvStorageFtwSpareSize) +
 125           PcdGet32 (PcdWinNtFlashNvStorageEventLogSize);
 126
 127         BuildFvHob (FdBase, FdSize);
 128       } else {
 129         //
 130         // For other FD's just map them in.
 131         //
 132         BuildResourceDescriptorHob (
 133           EFI_RESOURCE_FIRMWARE_DEVICE,
 134           (EFI_RESOURCE_ATTRIBUTE_PRESENT | EFI_RESOURCE_ATTRIBUTE_INITIALIZED | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE),
 135           FdBase,
 136           FdSize
 137           );
 138       }
 139     }
 140
 141     Index++;
 142   } while (!EFI_ERROR (Status));
 143
 144   return Status;
 145 }