1/*++ @file
2
3Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
4Portions copyright (c) 2011, Apple Inc. All rights reserved.
5This program and the accompanying materials
6are licensed and made available under the terms and conditions of the BSD License
7which accompanies this distribution.  The full text of the license may be found at
8http://opensource.org/licenses/bsd-license.php
9
10THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11WITHOUT 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
27EFI_STATUS
28EFIAPI
29PeimInitializeAutoScanPei (
30  IN       EFI_PEI_FILE_HANDLE       FileHandle,
31  IN CONST EFI_PEI_SERVICES          **PeiServices
32  )
33/*++
34
35Routine Description:
36  Perform a call-back into the SEC simulator to get a memory value
37
38Arguments:
39  FfsHeader   - General purpose data available to every PEIM
40  PeiServices - General purpose services available to every PEIM.
41
42Returns:
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}
110