MdeModulePkg/Universal/MemoryTest/BaseMemoryTestPei/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 #include <Library/PeiServicesLib.h>
  24
  25 static PEI_BASE_MEMORY_TEST_PPI mPeiBaseMemoryTestPpi = { BaseMemoryTest };
  26
  27 static EFI_PEI_PPI_DESCRIPTOR   PpiListPeiBaseMemoryTest = {
  28   (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
  29   &gPeiBaseMemoryTestPpiGuid,
  30   &mPeiBaseMemoryTestPpi
  31 };
  32
  33 EFI_STATUS
  34 EFIAPI
  35 PeiBaseMemoryTestInit (
  36   IN EFI_FFS_FILE_HEADER       *FfsHeader,
  37   IN EFI_PEI_SERVICES          **PeiServices
  38   )
  39 /*++
  40 Description:
  41
  42   Entry point function of BaseMemoryTestInit Peim.
  43
  44 Arguments:
  45
  46   PeiServices           - General purpose services available to every PEIM.
  47   FfsHeader             - Ffs header pointer
  48
  49 Returns:
  50
  51   Status                - Result of InstallPpi
  52
  53 --*/
  54 {
  55
  56   return PeiServicesInstallPpi (&PpiListPeiBaseMemoryTest);
  57
  58 }
  59
  60 EFI_STATUS
  61 EFIAPI
  62 BaseMemoryTest (
  63   IN  EFI_PEI_SERVICES                   **PeiServices,
  64   IN PEI_BASE_MEMORY_TEST_PPI            *This,
  65   IN  EFI_PHYSICAL_ADDRESS               BeginAddress,
  66   IN  UINT64                             MemoryLength,
  67   IN  PEI_MEMORY_TEST_OP                 Operation,
  68   OUT EFI_PHYSICAL_ADDRESS               *ErrorAddress
  69   )
  70 /*++
  71 Description:
  72
  73   Test base memory.
  74
  75 Arguments:
  76
  77   PeiServices   - General purpose services available to every PEIM.
  78   This          - Pei memory test PPI pointer.
  79   BeginAddress  - Beginning of the memory address to be checked.
  80   MemoryLength  - Bytes of memory range to be checked.
  81   Operation     - Type of memory check operation to be performed.
  82   ErrorAddress  - Return the address of the error memory address.
  83   ErrorAddress  - Address which has error when checked.
  84
  85 Returns:
  86
  87   Status        - Result of InstallPpi
  88
  89 --*/
  90 {
  91   UINT32                TestPattern;
  92   EFI_PHYSICAL_ADDRESS  TempAddress;
  93   UINT32                SpanSize;
  94
  95   REPORT_STATUS_CODE (EFI_PROGRESS_CODE,  PcdGet32 (PcdStatusCodeValueMemoryTestStarted));
  96
  97   TestPattern = TEST_PATTERN;
  98   SpanSize    = 0;
  99
 100   //
 101   // Make sure we don't try and test anything above the max physical address range
 102   //
 103   ASSERT (BeginAddress + MemoryLength < EFI_MAX_ADDRESS);
 104
 105   switch (Operation) {
 106   case Extensive:
 107     SpanSize = 0x4;
 108     break;
 109
 110   case Sparse:
 111   case Quick:
 112     SpanSize = COVER_SPAN;
 113     break;
 114
 115   case Ignore:
 116     goto Done;
 117     break;
 118   }
 119   //
 120   // Write the test pattern into memory range
 121   //
 122   TempAddress = BeginAddress;
 123   while (TempAddress < BeginAddress + MemoryLength) {
 124     (*(UINT32 *) (UINTN) TempAddress) = TestPattern;
 125     TempAddress += SpanSize;
 126   }
 127   //
 128   // Read pattern from memory and compare it
 129   //
 130   TempAddress = BeginAddress;
 131   while (TempAddress < BeginAddress + MemoryLength) {
 132     if ((*(UINT32 *) (UINTN) TempAddress) != TestPattern) {
 133       *ErrorAddress = TempAddress;
 134       REPORT_STATUS_CODE (EFI_ERROR_CODE | EFI_ERROR_UNRECOVERED, PcdGet32 (PcdStatusCodeValueUncorrectableMemoryError));
 135
 136       return EFI_DEVICE_ERROR;
 137     }
 138
 139     TempAddress += SpanSize;
 140   }
 141
 142 Done:
 143   return EFI_SUCCESS;
 144 }