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
  38 #include <FlashLayout.h>
  39
  40
  41 EFI_STATUS
  42 EFIAPI
  43 PeimInitializeWinNtFwh (
  44   IN EFI_FFS_FILE_HEADER       *FfsHeader,
  45   IN EFI_PEI_SERVICES          **PeiServices
  46   )
  47 /*++
  48
  49 Routine Description:
  50   Perform a call-back into the SEC simulator to get address of the Firmware Hub
  51
  52 Arguments:
  53   FfsHeader   - Ffs Header availible to every PEIM
  54   PeiServices - General purpose services available to every PEIM.
  55
  56 Returns:
  57   None
  58
  59 --*/
  60 {
  61   EFI_STATUS                  Status;
  62   EFI_PEI_PPI_DESCRIPTOR      *PpiDescriptor;
  63   NT_FWH_PPI                  *FwhPpi;
  64   EFI_PHYSICAL_ADDRESS        FdBase;
  65   EFI_FIRMWARE_VOLUME_HEADER  *FvHeader;
  66   UINT64                      FdSize;
  67   UINTN                       Index;
  68
  69   DEBUG ((EFI_D_ERROR, "NT 32 Firmware Volume PEIM Loaded\n"));
  70
  71   //
  72   // Get the Fwh Information PPI
  73   //
  74   Status = (**PeiServices).LocatePpi (
  75                             PeiServices,
  76                             &gNtFwhPpiGuid, // GUID
  77                             0,              // INSTANCE
  78                             &PpiDescriptor, // EFI_PEI_PPI_DESCRIPTOR
  79                             &FwhPpi         // PPI
  80                             );
  81   ASSERT_EFI_ERROR (Status);
  82
  83   Index = 0;
  84   do {
  85     //
  86     // Get information about all the FD's in the system
  87     //
  88     Status = FwhPpi->NtFwh (Index, &FdBase, &FdSize);
  89     if (!EFI_ERROR (Status)) {
  90       //
  91       // Assume the FD starts with an FV header
  92       //
  93       FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) (UINTN) FdBase;
  94
  95       //
  96       // Make an FV Hob for the first FV in the FD
  97       //
  98       BuildFvHob (FdBase, FvHeader->FvLength);
  99
 100       if (Index == 0) {
 101         //
 102         // Assume the first FD was produced by the NT32.DSC
 103         //  All these strange offests are needed to keep in
 104         //  sync with the FlashMap and NT32.dsc file
 105         //
 106         BuildResourceDescriptorHob (
 107           EFI_RESOURCE_FIRMWARE_DEVICE,
 108           (EFI_RESOURCE_ATTRIBUTE_PRESENT | EFI_RESOURCE_ATTRIBUTE_INITIALIZED | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE),
 109           FdBase,
 110           (FvHeader->FvLength + EFI_WINNT_RUNTIME_UPDATABLE_LENGTH + EFI_WINNT_FTW_SPARE_BLOCK_LENGTH)
 111           );
 112
 113         //
 114         // Hard code the address of the spare block and variable services.
 115         //  Assume it's a hard coded offset from FV0 in FD0.
 116         //
 117         FdBase  = FdBase + EFI_WINNT_RUNTIME_UPDATABLE_OFFSET;
 118         FdSize  = EFI_WINNT_RUNTIME_UPDATABLE_LENGTH + EFI_WINNT_FTW_SPARE_BLOCK_LENGTH;
 119
 120         BuildFvHob (FdBase, FdSize);
 121       } else {
 122         //
 123         // For other FD's just map them in.
 124         //
 125         BuildResourceDescriptorHob (
 126           EFI_RESOURCE_FIRMWARE_DEVICE,
 127           (EFI_RESOURCE_ATTRIBUTE_PRESENT | EFI_RESOURCE_ATTRIBUTE_INITIALIZED | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE),
 128           FdBase,
 129           FdSize
 130           );
 131       }
 132     }
 133
 134     Index++;
 135   } while (!EFI_ERROR (Status));
 136
 137   return Status;
 138 }