UnixPkg/UnixAutoScanPei/UnixAutoScan.c

   1 /*++
   2
   3 Copyright (c) 2006 - 2008, 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   UnixAutoscan.c
  14
  15 Abstract:
  16   This PEIM to abstract memory auto-scan in an Unix environment.
  17
  18 Revision History
  19
  20 --*/
  21
  22 #include "PiPei.h"
  23 #include <Ppi/UnixAutoScan.h>
  24 #include <Ppi/BaseMemoryTest.h>
  25 #include <Ppi/MemoryDiscovered.h>
  26
  27 #include <Library/DebugLib.h>
  28 #include <Library/PeimEntryPoint.h>
  29 #include <Library/BaseLib.h>
  30 #include <Library/BaseMemoryLib.h>
  31 #include <Library/HobLib.h>
  32 #include <Library/PeiServicesLib.h>
  33 #include <Library/PeiServicesTablePointerLib.h>
  34
  35 EFI_STATUS
  36 EFIAPI
  37 PeimInitializeUnixAutoScan (
  38   IN       EFI_PEI_FILE_HANDLE       FileHandle,
  39   IN CONST EFI_PEI_SERVICES          **PeiServices
  40   )
  41 /*++
  42
  43 Routine Description:
  44   Perform a call-back into the SEC simulator to get a memory value
  45
  46 Arguments:
  47   FfsHeader   - General purpose data available to every PEIM
  48   PeiServices - General purpose services available to every PEIM.
  49
  50 Returns:
  51   None
  52
  53 --*/
  54 {
  55   EFI_STATUS                  Status;
  56   EFI_PEI_PPI_DESCRIPTOR      *PpiDescriptor;
  57   PEI_UNIX_AUTOSCAN_PPI      *PeiUnixService;
  58   UINT64                      MemorySize;
  59   EFI_PHYSICAL_ADDRESS        MemoryBase;
  60   PEI_BASE_MEMORY_TEST_PPI    *MemoryTestPpi;
  61   EFI_PHYSICAL_ADDRESS        ErrorAddress;
  62   UINTN                       Index;
  63   EFI_RESOURCE_ATTRIBUTE_TYPE Attributes;
  64
  65
  66   DEBUG ((EFI_D_ERROR, "Unix Autoscan PEIM Loaded\n"));
  67
  68   //
  69   // Get the PEI UNIX Autoscan PPI
  70   //
  71   Status = PeiServicesLocatePpi (
  72              &gPeiUnixAutoScanPpiGuid, // GUID
  73              0,                      // INSTANCE
  74              &PpiDescriptor,         // EFI_PEI_PPI_DESCRIPTOR
  75              (VOID **)&PeiUnixService           // PPI
  76              );
  77   ASSERT_EFI_ERROR (Status);
  78
  79   //
  80   // Get the Memory Test PPI
  81   //
  82   Status = PeiServicesLocatePpi (
  83              &gPeiBaseMemoryTestPpiGuid,
  84              0,
  85              NULL,
  86             (VOID**)&MemoryTestPpi
  87             );
  88   ASSERT_EFI_ERROR (Status);
  89
  90   Index = 0;
  91   do {
  92     Status = PeiUnixService->UnixAutoScan (Index, &MemoryBase, &MemorySize);
  93     if (!EFI_ERROR (Status)) {
  94       Attributes =
  95         (
  96           EFI_RESOURCE_ATTRIBUTE_PRESENT |
  97           EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
  98           EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
  99           EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
 100           EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
 101           EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
 102         );
 103
 104       if (Index == 0) {
 105         //
 106         // For the first area register it as PEI tested memory
 107         //
 108         Status = MemoryTestPpi->BaseMemoryTest (
 109                                   PeiServices,
 110                                   MemoryTestPpi,
 111                                   MemoryBase,
 112                                   MemorySize,
 113                                   Quick,
 114                                   &ErrorAddress
 115                                   );
 116         ASSERT_EFI_ERROR (Status);
 117
 118         //
 119         // Register the "tested" memory with the PEI Core
 120         //
 121         Status = PeiServicesInstallPeiMemory (MemoryBase, MemorySize);
 122         ASSERT_EFI_ERROR (Status);
 123
 124         Attributes |= EFI_RESOURCE_ATTRIBUTE_TESTED;
 125       }
 126
 127       BuildResourceDescriptorHob (
 128         EFI_RESOURCE_SYSTEM_MEMORY,
 129         Attributes,
 130         MemoryBase,
 131         MemorySize
 132         );
 133     }
 134     Index++;
 135   } while (!EFI_ERROR (Status));
 136
 137   //
 138   // Build the CPU hob with 36-bit addressing and 16-bits of IO space.
 139   //
 140   BuildCpuHob (36, 16);
 141
 142   return Status;
 143 }