EmulatorPkg/AutoScanPei/AutoScanPei.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 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
  15 #include "PiPei.h"
  16 #include <Ppi/EmuThunk.h>
  17 #include <Ppi/MemoryDiscovered.h>
  18
  19 #include <Library/DebugLib.h>
  20 #include <Library/PeimEntryPoint.h>
  21 #include <Library/BaseLib.h>
  22 #include <Library/BaseMemoryLib.h>
  23 #include <Library/HobLib.h>
  24 #include <Library/PeiServicesLib.h>
  25 #include <Library/PeiServicesTablePointerLib.h>
  26
  27 EFI_STATUS
  28 EFIAPI
  29 PeimInitializeAutoScanPei (
  30   IN       EFI_PEI_FILE_HANDLE       FileHandle,
  31   IN CONST EFI_PEI_SERVICES          **PeiServices
  32   )
  33 /*++
  34
  35 Routine Description:
  36   Perform a call-back into the SEC simulator to get a memory value
  37
  38 Arguments:
  39   FfsHeader   - General purpose data available to every PEIM
  40   PeiServices - General purpose services available to every PEIM.
  41
  42 Returns:
  43   None
  44
  45 **/
  46 {
  47   EFI_STATUS                  Status;
  48   EFI_PEI_PPI_DESCRIPTOR      *PpiDescriptor;
  49   EMU_THUNK_PPI               *Thunk;
  50   UINT64                      MemorySize;
  51   EFI_PHYSICAL_ADDRESS        MemoryBase;
  52   UINTN                       Index;
  53   EFI_RESOURCE_ATTRIBUTE_TYPE Attributes;
  54
  55
  56   DEBUG ((EFI_D_ERROR, "Emu Autoscan PEIM Loaded\n"));
  57
  58   //
  59   // Get the PEI UNIX Autoscan PPI
  60   //
  61   Status = PeiServicesLocatePpi (
  62              &gEmuThunkPpiGuid,      // GUID
  63              0,                      // INSTANCE
  64              &PpiDescriptor,         // EFI_PEI_PPI_DESCRIPTOR
  65              (VOID **)&Thunk         // PPI
  66              );
  67   ASSERT_EFI_ERROR (Status);
  68
  69   Index = 0;
  70   do {
  71     Status = Thunk->MemoryAutoScan (Index, &MemoryBase, &MemorySize);
  72     if (!EFI_ERROR (Status)) {
  73       Attributes =
  74         (
  75           EFI_RESOURCE_ATTRIBUTE_PRESENT |
  76           EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
  77           EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
  78           EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
  79           EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
  80           EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
  81         );
  82
  83       if (Index == 0) {
  84         //
  85         // Register the memory with the PEI Core
  86         //
  87         Status = PeiServicesInstallPeiMemory (MemoryBase, MemorySize);
  88         ASSERT_EFI_ERROR (Status);
  89
  90         Attributes |= EFI_RESOURCE_ATTRIBUTE_TESTED;
  91       }
  92
  93       BuildResourceDescriptorHob (
  94         EFI_RESOURCE_SYSTEM_MEMORY,
  95         Attributes,
  96         MemoryBase,
  97         MemorySize
  98         );
  99     }
 100     Index++;
 101   } while (!EFI_ERROR (Status));
 102
 103   //
 104   // Build the CPU hob with 36-bit addressing and 16-bits of IO space.
 105   //
 106   BuildCpuHob (36, 16);
 107
 108   return Status;
 109 }