EdkModulePkg/Universal/GenericMemoryTest/Pei/BaseMemoryTest.c

   1 /*++
   2
   3 Copyright (c) 2006 - 2007, 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
  14   BaseMemoryTest.c
  15
  16 Abstract:
  17
  18   The PEI memory test support
  19
  20 --*/
  21
  22 #include <BaseMemoryTest.h>
  23
  24 static PEI_BASE_MEMORY_TEST_PPI mPeiBaseMemoryTestPpi = { BaseMemoryTest };
  25
  26 static EFI_PEI_PPI_DESCRIPTOR   PpiListPeiBaseMemoryTest = {
  27   (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
  28   &gPeiBaseMemoryTestPpiGuid,
  29   &mPeiBaseMemoryTestPpi
  30 };
  31
  32 EFI_STATUS
  33 EFIAPI
  34 PeiBaseMemoryTestInit (
  35   IN EFI_FFS_FILE_HEADER       *FfsHeader,
  36   IN EFI_PEI_SERVICES          **PeiServices
  37   )
  38 /*++
  39 Description:
  40
  41   Entry point function of BaseMemoryTestInit Peim.
  42
  43 Arguments:
  44
  45   PeiServices           - General purpose services available to every PEIM.
  46   FfsHeader             - Ffs header pointer
  47
  48 Returns:
  49
  50   Status                - Result of InstallPpi
  51
  52 --*/
  53 {
  54   EFI_STATUS  Status;
  55
  56   Status = (**PeiServices).InstallPpi (PeiServices, &PpiListPeiBaseMemoryTest);
  57
  58   return Status;
  59 }
  60
  61 EFI_STATUS
  62 EFIAPI
  63 BaseMemoryTest (
  64   IN  EFI_PEI_SERVICES                   **PeiServices,
  65   IN PEI_BASE_MEMORY_TEST_PPI            *This,
  66   IN  EFI_PHYSICAL_ADDRESS               BeginAddress,
  67   IN  UINT64                             MemoryLength,
  68   IN  PEI_MEMORY_TEST_OP                 Operation,
  69   OUT EFI_PHYSICAL_ADDRESS               *ErrorAddress
  70   )
  71 /*++
  72 Description:
  73
  74   Test base memory.
  75
  76 Arguments:
  77
  78   PeiServices   - General purpose services available to every PEIM.
  79   This          - Pei memory test PPI pointer.
  80   BeginAddress  - Beginning of the memory address to be checked.
  81   MemoryLength  - Bytes of memory range to be checked.
  82   Operation     - Type of memory check operation to be performed.
  83   ErrorAddress  - Return the address of the error memory address.
  84   ErrorAddress  - Address which has error when checked.
  85
  86 Returns:
  87
  88   Status        - Result of InstallPpi
  89
  90 --*/
  91 {
  92   UINT32                TestPattern;
  93   EFI_PHYSICAL_ADDRESS  TempAddress;
  94   UINT32                SpanSize;
  95
  96   REPORT_STATUS_CODE (
  97     EFI_PROGRESS_CODE,
  98     EFI_COMPUTING_UNIT_MEMORY + EFI_CU_MEMORY_PC_TEST
  99     );
 100
 101   TestPattern = TEST_PATTERN;
 102   SpanSize    = 0;
 103
 104   //
 105   // Make sure we don't try and test anything above the max physical address range
 106   //
 107   ASSERT (BeginAddress + MemoryLength < EFI_MAX_ADDRESS);
 108
 109   switch (Operation) {
 110   case Extensive:
 111     SpanSize = 0x4;
 112     break;
 113
 114   case Sparse:
 115   case Quick:
 116     SpanSize = COVER_SPAN;
 117     break;
 118
 119   case Ignore:
 120     goto Done;
 121     break;
 122   }
 123   //
 124   // Write the test pattern into memory range
 125   //
 126   TempAddress = BeginAddress;
 127   while (TempAddress < BeginAddress + MemoryLength) {
 128     (*(UINT32 *) (UINTN) TempAddress) = TestPattern;
 129     TempAddress += SpanSize;
 130   }
 131   //
 132   // Read pattern from memory and compare it
 133   //
 134   TempAddress = BeginAddress;
 135   while (TempAddress < BeginAddress + MemoryLength) {
 136     if ((*(UINT32 *) (UINTN) TempAddress) != TestPattern) {
 137       *ErrorAddress = TempAddress;
 138       REPORT_STATUS_CODE (
 139         EFI_ERROR_CODE | EFI_ERROR_UNRECOVERED,
 140         EFI_COMPUTING_UNIT_MEMORY | EFI_CU_MEMORY_EC_UNCORRECTABLE
 141         );
 142
 143       return EFI_DEVICE_ERROR;
 144     }
 145
 146     TempAddress += SpanSize;
 147   }
 148
 149 Done:
 150   return EFI_SUCCESS;
 151 }