EdkNt32Pkg/Pei/Autoscan/WinntAutoscan.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   WinNtAutoscan.c
  14
  15 Abstract:
  16   This PEIM to abstract memory auto-scan in a Windows NT environment.
  17
  18 Revision History
  19
  20 --*/
  21
  22 EFI_STATUS
  23 EFIAPI
  24 PeimInitializeWinNtAutoScan (
  25   IN EFI_FFS_FILE_HEADER       *FfsHeader,
  26   IN EFI_PEI_SERVICES          **PeiServices
  27   )
  28 /*++
  29
  30 Routine Description:
  31   Perform a call-back into the SEC simulator to get a memory value
  32
  33 Arguments:
  34   FfsHeader   - General purpose data available to every PEIM
  35   PeiServices - General purpose services available to every PEIM.
  36
  37 Returns:
  38   None
  39
  40 --*/
  41 {
  42   EFI_STATUS                  Status;
  43   EFI_PEI_PPI_DESCRIPTOR      *PpiDescriptor;
  44   PEI_NT_AUTOSCAN_PPI         *PeiNtService;
  45   UINT64                      MemorySize;
  46   EFI_PHYSICAL_ADDRESS        MemoryBase;
  47   PEI_BASE_MEMORY_TEST_PPI    *MemoryTestPpi;
  48   EFI_PHYSICAL_ADDRESS        ErrorAddress;
  49   UINTN                       Index;
  50   EFI_RESOURCE_ATTRIBUTE_TYPE Attributes;
  51
  52
  53   DEBUG ((EFI_D_ERROR, "NT 32 Autoscan PEIM Loaded\n"));
  54
  55   //
  56   // Get the PEI NT Autoscan PPI
  57   //
  58   Status = (**PeiServices).LocatePpi (
  59                             PeiServices,
  60                             &gPeiNtAutoScanPpiGuid, // GUID
  61                             0,                      // INSTANCE
  62                             &PpiDescriptor,         // EFI_PEI_PPI_DESCRIPTOR
  63                             &PeiNtService           // PPI
  64                             );
  65   ASSERT_EFI_ERROR (Status);
  66
  67   //
  68   // Get the Memory Test PPI
  69   //
  70   Status = (**PeiServices).LocatePpi (
  71                             PeiServices,
  72                             &gPeiBaseMemoryTestPpiGuid,
  73                             0,
  74                             NULL,
  75                             &MemoryTestPpi
  76                             );
  77   ASSERT_EFI_ERROR (Status);
  78
  79   Index = 0;
  80   do {
  81     Status = PeiNtService->NtAutoScan (Index, &MemoryBase, &MemorySize);
  82     if (!EFI_ERROR (Status)) {
  83       Attributes =
  84         (
  85           EFI_RESOURCE_ATTRIBUTE_PRESENT |
  86           EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
  87           EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
  88           EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
  89           EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
  90           EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
  91         );
  92
  93       if (Index == 0) {
  94         //
  95         // For the first area register it as PEI tested memory
  96         //
  97         Status = MemoryTestPpi->BaseMemoryTest (
  98                                   PeiServices,
  99                                   MemoryTestPpi,
 100                                   MemoryBase,
 101                                   MemorySize,
 102                                   Quick,
 103                                   &ErrorAddress
 104                                   );
 105         ASSERT_EFI_ERROR (Status);
 106
 107         //
 108         // Register the "tested" memory with the PEI Core
 109         //
 110         Status = (**PeiServices).InstallPeiMemory (PeiServices, MemoryBase, MemorySize);
 111         ASSERT_EFI_ERROR (Status);
 112
 113         Attributes |= EFI_RESOURCE_ATTRIBUTE_TESTED;
 114       }
 115
 116       BuildResourceDescriptorHob (
 117         EFI_RESOURCE_SYSTEM_MEMORY,
 118         Attributes,
 119         MemoryBase,
 120         MemorySize
 121         );
 122     }
 123     Index++;
 124   } while (!EFI_ERROR (Status));
 125
 126   //
 127   // Build the CPU hob with 36-bit addressing and 16-bits of IO space.
 128   //
 129   BuildCpuHob (36, 16);
 130
 131   return Status;
 132 }