IntelFsp2Pkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / IntelFsp2Pkg / Library / BaseFspPlatformLib / FspPlatformMemory.c

/** @file\r
\r
  Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include <PiPei.h>\r
#include <Library/BaseLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/PcdLib.h>\r
#include <Library/HobLib.h>\r
#include <Library/PeiServicesLib.h>\r
#include <Library/FspCommonLib.h>\r
#include <FspGlobalData.h>\r
#include <FspEas.h>\r
\r
/**\r
  Get system memory resource descriptor by owner.\r
\r
  @param[in] OwnerGuid   resource owner guid\r
**/\r
EFI_HOB_RESOURCE_DESCRIPTOR *\r
EFIAPI\r
FspGetResourceDescriptorByOwner (\r
  IN EFI_GUID   *OwnerGuid\r
  )\r
{\r
  EFI_PEI_HOB_POINTERS    Hob;\r
\r
  //\r
  // Get the HOB list for processing\r
  //\r
  Hob.Raw = GetHobList ();\r
\r
  //\r
  // Collect memory ranges\r
  //\r
  while (!END_OF_HOB_LIST (Hob)) {\r
    if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {\r
      if ((Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_MEMORY_RESERVED) && \\r
          (CompareGuid (&Hob.ResourceDescriptor->Owner, OwnerGuid))) {\r
        return  Hob.ResourceDescriptor;\r
      }\r
    }\r
    Hob.Raw = GET_NEXT_HOB (Hob);\r
  }\r
\r
  return NULL;\r
}\r
\r
/**\r
  Get system memory from HOB.\r
\r
  @param[in,out] LowMemoryLength   less than 4G memory length\r
  @param[in,out] HighMemoryLength  greater than 4G memory length\r
**/\r
VOID\r
EFIAPI\r
FspGetSystemMemorySize (\r
  IN OUT UINT64              *LowMemoryLength,\r
  IN OUT UINT64              *HighMemoryLength\r
  )\r
{\r
  EFI_STATUS                  Status;\r
  EFI_BOOT_MODE               BootMode;\r
  EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttribute;\r
  EFI_PEI_HOB_POINTERS        Hob;\r
\r
  ResourceAttribute = (\r
                       EFI_RESOURCE_ATTRIBUTE_PRESENT |\r
                       EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r
                       EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |\r
                       EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r
                       EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r
                       EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE\r
                       );\r
\r
  Status = PeiServicesGetBootMode (&BootMode);\r
  ASSERT_EFI_ERROR (Status);\r
\r
  if (BootMode != BOOT_ON_S3_RESUME) {\r
    ResourceAttribute |= EFI_RESOURCE_ATTRIBUTE_TESTED;\r
  }\r
\r
  *HighMemoryLength = 0;\r
  *LowMemoryLength  = SIZE_1MB;\r
  //\r
  // Get the HOB list for processing\r
  //\r
  Hob.Raw = GetHobList ();\r
\r
  //\r
  // Collect memory ranges\r
  //\r
  while (!END_OF_HOB_LIST (Hob)) {\r
    if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {\r
      if ((Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) ||\r
          ((Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_MEMORY_RESERVED) &&\r
           (Hob.ResourceDescriptor->ResourceAttribute == ResourceAttribute))) {\r
        //\r
        // Need memory above 1MB to be collected here\r
        //\r
        if (Hob.ResourceDescriptor->PhysicalStart >= BASE_1MB &&\r
            Hob.ResourceDescriptor->PhysicalStart < (EFI_PHYSICAL_ADDRESS) BASE_4GB) {\r
          *LowMemoryLength += (UINT64) (Hob.ResourceDescriptor->ResourceLength);\r
        } else if (Hob.ResourceDescriptor->PhysicalStart >= (EFI_PHYSICAL_ADDRESS) BASE_4GB) {\r
          *HighMemoryLength += (UINT64) (Hob.ResourceDescriptor->ResourceLength);\r
        }\r
      }\r
    }\r
    Hob.Raw = GET_NEXT_HOB (Hob);\r
  }\r
}\r