IntelFspPkg/Library/BaseFspPlatformLib/FspPlatformMemory.c

   1 /** @file
   2
   3   Copyright (c) 2014 - 2015, 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/MemoryAllocationLib.h>
  18 #include <Library/DebugLib.h>
  19 #include <Library/PcdLib.h>
  20 #include <Library/HobLib.h>
  21 #include <Library/PeiServicesLib.h>
  22 #include <Library/FspCommonLib.h>
  23 #include <Guid/GuidHobFsp.h>
  24 #include <FspGlobalData.h>
  25 #include <FspApi.h>
  26
  27 /**
  28   Get system memory from HOB.
  29
  30   @param[in,out] LowMemoryLength   less than 4G memory length
  31   @param[in,out] HighMemoryLength  greater than 4G memory length
  32 **/
  33 VOID
  34 EFIAPI
  35 FspGetSystemMemorySize (
  36   IN OUT UINT64              *LowMemoryLength,
  37   IN OUT UINT64              *HighMemoryLength
  38   )
  39 {
  40   EFI_PEI_HOB_POINTERS    Hob;
  41
  42   *HighMemoryLength = 0;
  43   *LowMemoryLength  = SIZE_1MB;
  44   //
  45   // Get the HOB list for processing
  46   //
  47   Hob.Raw = GetHobList ();
  48
  49   //
  50   // Collect memory ranges
  51   //
  52   while (!END_OF_HOB_LIST (Hob)) {
  53     if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
  54       if (Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) {
  55         //
  56         // Need memory above 1MB to be collected here
  57         //
  58         if (Hob.ResourceDescriptor->PhysicalStart >= BASE_1MB &&
  59             Hob.ResourceDescriptor->PhysicalStart < (EFI_PHYSICAL_ADDRESS) BASE_4GB) {
  60           *LowMemoryLength += (UINT64) (Hob.ResourceDescriptor->ResourceLength);
  61         } else if (Hob.ResourceDescriptor->PhysicalStart >= (EFI_PHYSICAL_ADDRESS) BASE_4GB) {
  62           *HighMemoryLength += (UINT64) (Hob.ResourceDescriptor->ResourceLength);
  63         }
  64       }
  65     }
  66     Hob.Raw = GET_NEXT_HOB (Hob);
  67   }
  68 }
  69
  70 /**
  71   Migrate bootloader data before destroying CAR.
  72
  73 **/
  74 VOID
  75 EFIAPI
  76 FspMigrateTemporaryMemory (
  77   VOID
  78  )
  79 {
  80   FSP_INIT_RT_COMMON_BUFFER *FspInitRtBuffer;
  81   UINT32                    BootLoaderTempRamStart;
  82   UINT32                    BootLoaderTempRamEnd;
  83   UINT32                    BootLoaderTempRamSize;
  84   UINT32                    OffsetGap;
  85   UINT32                    FspParamPtr;
  86   FSP_INIT_PARAMS           *FspInitParams;
  87   UINT32                    *NewStackTop;
  88   VOID                      *BootLoaderTempRamHob;
  89   VOID                      *UpdDataRgnPtr;
  90   VOID                      *PlatformDataPtr;
  91   UINT8                      ApiMode;
  92
  93   ApiMode = GetFspApiCallingMode ();
  94
  95   //
  96   // Get the temporary memory range used by the bootloader
  97   //
  98   BootLoaderTempRamStart = PcdGet32(PcdTemporaryRamBase);
  99   BootLoaderTempRamSize  = PcdGet32(PcdTemporaryRamSize) - PcdGet32(PcdFspTemporaryRamSize);
 100   BootLoaderTempRamEnd   = BootLoaderTempRamStart +  BootLoaderTempRamSize;
 101
 102   //
 103   // Build a Boot Loader Temporary Memory GUID HOB
 104   //
 105   if (ApiMode == 0) {
 106     BootLoaderTempRamHob = BuildGuidHob (&gFspBootLoaderTempMemoryGuid, BootLoaderTempRamSize);
 107   } else {
 108         BootLoaderTempRamHob = (VOID *)AllocatePool (BootLoaderTempRamSize);
 109   }
 110
 111   CopyMem (BootLoaderTempRamHob, (VOID *)BootLoaderTempRamStart, BootLoaderTempRamSize);
 112   OffsetGap = (UINT32)BootLoaderTempRamHob - BootLoaderTempRamStart;
 113
 114   //
 115   // Set a new stack frame for the continuation function
 116   //
 117   if (ApiMode == 0) {
 118     FspInitParams   = (FSP_INIT_PARAMS *)GetFspApiParameter ();
 119     FspInitRtBuffer = (FSP_INIT_RT_COMMON_BUFFER *)FspInitParams->RtBufferPtr;
 120     NewStackTop     = (UINT32 *)FspInitRtBuffer->StackTop - 1;
 121     SetFspCoreStackPointer (NewStackTop);
 122   }
 123
 124   //
 125   // Fix the FspInit Parameter Pointers to the new location.
 126   //
 127   FspParamPtr = GetFspApiParameter ();
 128   if (FspParamPtr >= BootLoaderTempRamStart && FspParamPtr < BootLoaderTempRamEnd) {
 129     SetFspApiParameter(FspParamPtr + OffsetGap);
 130   }
 131
 132   FspInitParams = (FSP_INIT_PARAMS *)GetFspApiParameter ();
 133   if ((UINT32)(FspInitParams->RtBufferPtr) >= BootLoaderTempRamStart &&
 134       (UINT32)(FspInitParams->RtBufferPtr) <  BootLoaderTempRamEnd) {
 135     FspInitParams->RtBufferPtr = (VOID *)((UINT32)(FspInitParams->RtBufferPtr) + OffsetGap);
 136   }
 137
 138   if ((UINT32)(FspInitParams->NvsBufferPtr) >= BootLoaderTempRamStart &&
 139       (UINT32)(FspInitParams->NvsBufferPtr) <  BootLoaderTempRamEnd) {
 140     FspInitParams->NvsBufferPtr = (VOID *)((UINT32)(FspInitParams->NvsBufferPtr) + OffsetGap);
 141   }
 142
 143   if ((UINT32)(((FSP_INIT_RT_COMMON_BUFFER *)(FspInitParams->RtBufferPtr))->UpdDataRgnPtr) >= BootLoaderTempRamStart &&
 144       (UINT32)(((FSP_INIT_RT_COMMON_BUFFER *)(FspInitParams->RtBufferPtr))->UpdDataRgnPtr) <  BootLoaderTempRamEnd) {
 145     ((FSP_INIT_RT_COMMON_BUFFER *)(FspInitParams->RtBufferPtr))->UpdDataRgnPtr = \
 146            (VOID *)((UINT32)(((FSP_INIT_RT_COMMON_BUFFER *)(FspInitParams->RtBufferPtr))->UpdDataRgnPtr) + OffsetGap);
 147   }
 148
 149   //
 150   // Update UPD pointer in FSP Global Data
 151   //
 152   UpdDataRgnPtr = ((FSP_INIT_RT_COMMON_BUFFER *)FspInitParams->RtBufferPtr)->UpdDataRgnPtr;
 153   if (UpdDataRgnPtr != NULL) {
 154     SetFspUpdDataPointer (UpdDataRgnPtr);
 155   }
 156
 157   //
 158   // Update Platform data pointer in FSP Global Data
 159   //
 160   PlatformDataPtr = GetFspPlatformDataPointer ();
 161   if (((UINT32)PlatformDataPtr >= BootLoaderTempRamStart) &&
 162       ((UINT32)PlatformDataPtr <  BootLoaderTempRamEnd)) {
 163     SetFspPlatformDataPointer ((UINT8 *)PlatformDataPtr + OffsetGap);
 164   }
 165 }