ArmRealViewEbPkg/MemoryInitPei/MemoryInit.c

   1 /**@file
   2
   3 Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
   4 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   MemoryInit.c
  15
  16 Abstract:
  17
  18   PEIM to provide fake memory init
  19
  20 **/
  21
  22
  23
  24 //
  25 // The package level header files this module uses
  26 //
  27 #include <PiPei.h>
  28 //
  29 // The protocols, PPI and GUID defintions for this module
  30 //
  31 #include <Ppi/MasterBootMode.h>
  32 #include <Ppi/BootInRecoveryMode.h>
  33 //
  34 // The Library classes this module consumes
  35 //
  36 #include <Library/DebugLib.h>
  37 #include <Library/PeimEntryPoint.h>
  38 #include <Library/PcdLib.h>
  39 #include <Library/HobLib.h>
  40 #include <Library/PeiServicesLib.h>
  41
  42
  43 //
  44 // Module globals
  45 //
  46
  47 EFI_STATUS
  48 EFIAPI
  49 InitializeMemory (
  50   IN       EFI_PEI_FILE_HANDLE  FileHandle,
  51   IN CONST EFI_PEI_SERVICES     **PeiServices
  52   )
  53 /*++
  54
  55 Routine Description:
  56
  57
  58
  59 Arguments:
  60
  61   FileHandle  - Handle of the file being invoked.
  62   PeiServices - Describes the list of possible PEI Services.
  63
  64 Returns:
  65
  66   Status -  EFI_SUCCESS if the boot mode could be set
  67
  68 --*/
  69 {
  70   EFI_STATUS                    Status;
  71   EFI_RESOURCE_ATTRIBUTE_TYPE   Attributes;
  72   UINT64                        MemoryBase;
  73   UINT64                        MemorySize;
  74
  75   DEBUG ((EFI_D_ERROR, "Memory Init PEIM Loaded\n"));
  76
  77   // NOTE: this needs to come from your memory controller initization process
  78   MemoryBase = 0;
  79   MemorySize = 0x10000000;
  80
  81   DEBUG ((EFI_D_ERROR, "Installing hardcoded 256MB\n"));
  82   Status = PeiServicesInstallPeiMemory (MemoryBase, MemorySize);
  83   ASSERT_EFI_ERROR (Status);
  84
  85   Attributes =
  86     (
  87       EFI_RESOURCE_ATTRIBUTE_PRESENT |
  88       EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
  89       EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
  90       EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
  91       EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
  92       EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
  93       EFI_RESOURCE_ATTRIBUTE_TESTED
  94     );
  95
  96   BuildResourceDescriptorHob (
  97     EFI_RESOURCE_SYSTEM_MEMORY,
  98     Attributes,
  99     MemoryBase,
 100     MemorySize
 101     );
 102
 103   return Status;
 104 }