UnixPkg/UnixFirmwareVolumePei/UnixFwh.c

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