EmulatorPkg/AutoScanPei/AutoScanPei.c

   1 /*++ @file
   2
   3 Copyright (c) 2006 - 2018, 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 <Ppi/MemoryDiscovered.h>
  12
  13 #include <Library/DebugLib.h>
  14 #include <Library/PeimEntryPoint.h>
  15 #include <Library/BaseLib.h>
  16 #include <Library/BaseMemoryLib.h>
  17 #include <Library/HobLib.h>
  18 #include <Library/PeiServicesLib.h>
  19 #include <Library/PeiServicesTablePointerLib.h>
  20
  21 EFI_STATUS
  22 EFIAPI
  23 PeimInitializeAutoScanPei (
  24   IN       EFI_PEI_FILE_HANDLE       FileHandle,
  25   IN CONST EFI_PEI_SERVICES          **PeiServices
  26   )
  27 /*++
  28
  29 Routine Description:
  30   Perform a call-back into the SEC simulator to get a memory value
  31
  32 Arguments:
  33   FfsHeader   - General purpose data available to every PEIM
  34   PeiServices - General purpose services available to every PEIM.
  35
  36 Returns:
  37   None
  38
  39 **/
  40 {
  41   EFI_STATUS                  Status;
  42   EFI_PEI_PPI_DESCRIPTOR      *PpiDescriptor;
  43   EMU_THUNK_PPI               *Thunk;
  44   UINT64                      MemorySize;
  45   EFI_PHYSICAL_ADDRESS        MemoryBase;
  46   UINTN                       Index;
  47   EFI_RESOURCE_ATTRIBUTE_TYPE Attributes;
  48
  49
  50   DEBUG ((EFI_D_ERROR, "Emu Autoscan PEIM Loaded\n"));
  51
  52   //
  53   // Get the PEI UNIX Autoscan PPI
  54   //
  55   Status = PeiServicesLocatePpi (
  56              &gEmuThunkPpiGuid,      // GUID
  57              0,                      // INSTANCE
  58              &PpiDescriptor,         // EFI_PEI_PPI_DESCRIPTOR
  59              (VOID **)&Thunk         // PPI
  60              );
  61   ASSERT_EFI_ERROR (Status);
  62
  63   Index = 0;
  64   do {
  65     Status = Thunk->MemoryAutoScan (Index, &MemoryBase, &MemorySize);
  66     if (!EFI_ERROR (Status)) {
  67       Attributes =
  68         (
  69           EFI_RESOURCE_ATTRIBUTE_PRESENT |
  70           EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
  71           EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
  72           EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
  73           EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
  74           EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
  75         );
  76
  77       if (Index == 0) {
  78         //
  79         // Register the memory with the PEI Core
  80         //
  81         Status = PeiServicesInstallPeiMemory (MemoryBase, MemorySize);
  82         ASSERT_EFI_ERROR (Status);
  83
  84         Attributes |= EFI_RESOURCE_ATTRIBUTE_TESTED;
  85       }
  86
  87       BuildResourceDescriptorHob (
  88         EFI_RESOURCE_SYSTEM_MEMORY,
  89         Attributes,
  90         MemoryBase,
  91         MemorySize
  92         );
  93     }
  94     Index++;
  95   } while (!EFI_ERROR (Status));
  96
  97   //
  98   // Build the CPU hob with 57-bit addressing and 16-bits of IO space.
  99   //
 100   BuildCpuHob (57, 16);
 101
 102   return Status;
 103 }