IntelFspPkg/Library/BaseFspPlatformLib/FspPlatformMemory.c

   1 /** @file
   2
   3   Copyright (c) 2014, 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 **/
  13
  14 #include <PiPei.h>
  15 #include <Library/BaseLib.h>
  16 #include <Library/BaseMemoryLib.h>
  17 #include <Library/DebugLib.h>
  18 #include <Library/PcdLib.h>
  19 #include <Library/HobLib.h>
  20 #include <Library/PeiServicesLib.h>
  21 #include <Library/FspCommonLib.h>
  22 #include <Guid/GuidHobFsp.h>
  23 #include <FspGlobalData.h>
  24 #include <FspApi.h>
  25
  26 /**
  27   Get system memory from HOB.
  28
  29   @param[in,out] LowMemoryLength   less than 4G memory length
  30   @param[in,out] HighMemoryLength  greater than 4G memory length
  31 **/
  32 VOID
  33 EFIAPI
  34 FspGetSystemMemorySize (
  35   IN OUT UINT64              *LowMemoryLength,
  36   IN OUT UINT64              *HighMemoryLength
  37   )
  38 {
  39   EFI_PEI_HOB_POINTERS    Hob;
  40
  41   *HighMemoryLength = 0;
  42   *LowMemoryLength  = SIZE_1MB;
  43   //
  44   // Get the HOB list for processing
  45   //
  46   Hob.Raw = GetHobList ();
  47
  48   //
  49   // Collect memory ranges
  50   //
  51   while (!END_OF_HOB_LIST (Hob)) {
  52     if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
  53       if (Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) {
  54         //
  55         // Need memory above 1MB to be collected here
  56         //
  57         if (Hob.ResourceDescriptor->PhysicalStart >= BASE_1MB &&
  58             Hob.ResourceDescriptor->PhysicalStart < (EFI_PHYSICAL_ADDRESS) BASE_4GB) {
  59           *LowMemoryLength += (UINT64) (Hob.ResourceDescriptor->ResourceLength);
  60         } else if (Hob.ResourceDescriptor->PhysicalStart >= (EFI_PHYSICAL_ADDRESS) BASE_4GB) {
  61           *HighMemoryLength += (UINT64) (Hob.ResourceDescriptor->ResourceLength);
  62         }
  63       }
  64     }
  65     Hob.Raw = GET_NEXT_HOB (Hob);
  66   }
  67 }
  68
  69 /**
  70   Migrate bootloader data before destroying CAR.
  71
  72 **/
  73 VOID
  74 EFIAPI
  75 FspMigrateTemporaryMemory (
  76   VOID
  77  )
  78 {
  79   FSP_INIT_RT_COMMON_BUFFER  *FspInitRtBuffer;
  80   UINT32             BootLoaderTempRamStart;
  81   UINT32             BootLoaderTempRamEnd;
  82   UINT32             BootLoaderTempRamSize;
  83   UINT32             OffsetGap;
  84   UINT32             FspParamPtr;
  85   FSP_INIT_PARAMS   *FspInitParams;
  86   UINT32            *NewStackTop;
  87   VOID              *BootLoaderTempRamHob;
  88   VOID              *UpdDataRgnPtr;
  89   VOID              *PlatformDataPtr;
  90
  91   //
  92   // Get the temporary memory range used by the bootloader
  93   //
  94   BootLoaderTempRamStart = PcdGet32(PcdTemporaryRamBase);
  95   BootLoaderTempRamSize  = PcdGet32(PcdTemporaryRamSize) - PcdGet32(PcdFspTemporaryRamSize);
  96   BootLoaderTempRamEnd   = BootLoaderTempRamStart +  BootLoaderTempRamSize;
  97
  98   //
  99   // Build a Boot Loader Temporary Memory GUID HOB
 100   //
 101   BootLoaderTempRamHob = BuildGuidHob (&gFspBootLoaderTemporaryMemoryGuid, BootLoaderTempRamSize);
 102   CopyMem (BootLoaderTempRamHob, (VOID *)BootLoaderTempRamStart, BootLoaderTempRamSize);
 103   OffsetGap = (UINT32)BootLoaderTempRamHob - BootLoaderTempRamStart;
 104
 105   //
 106   // Set a new stack frame for the continuation function
 107   //
 108   FspInitParams   = (FSP_INIT_PARAMS *)GetFspApiParameter ();
 109   FspInitRtBuffer = (FSP_INIT_RT_COMMON_BUFFER *)FspInitParams->RtBufferPtr;
 110   NewStackTop     = (UINT32 *)FspInitRtBuffer->StackTop - 1;
 111   SetFspCoreStackPointer (NewStackTop);
 112
 113   //
 114   // Fix the FspInit Parameter Pointers to the new location.
 115   //
 116   FspParamPtr = GetFspApiParameter ();
 117   if (FspParamPtr >= BootLoaderTempRamStart && FspParamPtr < BootLoaderTempRamEnd) {
 118     SetFspApiParameter(FspParamPtr + OffsetGap);
 119   }
 120
 121   FspInitParams = (FSP_INIT_PARAMS *)GetFspApiParameter ();
 122   if ((UINT32)(FspInitParams->RtBufferPtr) >= BootLoaderTempRamStart &&
 123       (UINT32)(FspInitParams->RtBufferPtr) <  BootLoaderTempRamEnd) {
 124     FspInitParams->RtBufferPtr = (VOID *)((UINT32)(FspInitParams->RtBufferPtr) + OffsetGap);
 125   }
 126
 127   if ((UINT32)(FspInitParams->NvsBufferPtr) >= BootLoaderTempRamStart &&
 128       (UINT32)(FspInitParams->NvsBufferPtr) <  BootLoaderTempRamEnd) {
 129     FspInitParams->NvsBufferPtr = (VOID *)((UINT32)(FspInitParams->NvsBufferPtr) + OffsetGap);
 130   }
 131
 132   if ((UINT32)(((FSP_INIT_RT_COMMON_BUFFER *)(FspInitParams->RtBufferPtr))->UpdDataRgnPtr) >= BootLoaderTempRamStart &&
 133       (UINT32)(((FSP_INIT_RT_COMMON_BUFFER *)(FspInitParams->RtBufferPtr))->UpdDataRgnPtr) <  BootLoaderTempRamEnd) {
 134     ((FSP_INIT_RT_COMMON_BUFFER *)(FspInitParams->RtBufferPtr))->UpdDataRgnPtr = \
 135            (VOID *)((UINT32)(((FSP_INIT_RT_COMMON_BUFFER *)(FspInitParams->RtBufferPtr))->UpdDataRgnPtr) + OffsetGap);
 136   }
 137
 138   //
 139   // Update UPD pointer in FSP Global Data
 140   //
 141   UpdDataRgnPtr = ((FSP_INIT_RT_COMMON_BUFFER *)FspInitParams->RtBufferPtr)->UpdDataRgnPtr;
 142   if (UpdDataRgnPtr != NULL) {
 143     SetFspUpdDataPointer (UpdDataRgnPtr);
 144   }
 145
 146   //
 147   // Update Platform data pointer in FSP Global Data
 148   //
 149   PlatformDataPtr = GetFspPlatformDataPointer ();
 150   if (((UINT32)PlatformDataPtr >= BootLoaderTempRamStart) &&
 151       ((UINT32)PlatformDataPtr <  BootLoaderTempRamEnd)) {
 152     SetFspPlatformDataPointer ((UINT8 *)PlatformDataPtr + OffsetGap);
 153   }
 154
 155 }