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      1 /** @file
      2 
      3   Copyright (c) 2014 - 2016, 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 <FspGlobalData.h>
     24 #include <FspEas.h>
     25 
     26 /**
     27   Get system memory resource descriptor by owner.
     28 
     29   @param[in] OwnerGuid   resource owner guid
     30 **/
     31 EFI_HOB_RESOURCE_DESCRIPTOR *
     32 EFIAPI
     33 FspGetResourceDescriptorByOwner (
     34   IN EFI_GUID   *OwnerGuid
     35   )
     36 {
     37   EFI_PEI_HOB_POINTERS    Hob;
     38 
     39   //
     40   // Get the HOB list for processing
     41   //
     42   Hob.Raw = GetHobList ();
     43 
     44   //
     45   // Collect memory ranges
     46   //
     47   while (!END_OF_HOB_LIST (Hob)) {
     48     if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
     49       if ((Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_MEMORY_RESERVED) && \
     50           (CompareGuid (&Hob.ResourceDescriptor->Owner, OwnerGuid))) {
     51         return  Hob.ResourceDescriptor;
     52       }
     53     }
     54     Hob.Raw = GET_NEXT_HOB (Hob);
     55   }
     56 
     57   return NULL;
     58 }
     59 
     60 /**
     61   Get system memory from HOB.
     62 
     63   @param[in,out] LowMemoryLength   less than 4G memory length
     64   @param[in,out] HighMemoryLength  greater than 4G memory length
     65 **/
     66 VOID
     67 EFIAPI
     68 FspGetSystemMemorySize (
     69   IN OUT UINT64              *LowMemoryLength,
     70   IN OUT UINT64              *HighMemoryLength
     71   )
     72 {
     73   EFI_STATUS                  Status;
     74   EFI_BOOT_MODE               BootMode;
     75   EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttribute;
     76   EFI_PEI_HOB_POINTERS        Hob;
     77 
     78   ResourceAttribute = (
     79                        EFI_RESOURCE_ATTRIBUTE_PRESENT |
     80                        EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
     81                        EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
     82                        EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
     83                        EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
     84                        EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
     85                        );
     86 
     87   Status = PeiServicesGetBootMode (&BootMode);
     88   ASSERT_EFI_ERROR (Status);
     89 
     90   if (BootMode != BOOT_ON_S3_RESUME) {
     91     ResourceAttribute |= EFI_RESOURCE_ATTRIBUTE_TESTED;
     92   }
     93 
     94   *HighMemoryLength = 0;
     95   *LowMemoryLength  = SIZE_1MB;
     96   //
     97   // Get the HOB list for processing
     98   //
     99   Hob.Raw = GetHobList ();
    100 
    101   //
    102   // Collect memory ranges
    103   //
    104   while (!END_OF_HOB_LIST (Hob)) {
    105     if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
    106       if ((Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) ||
    107           ((Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_MEMORY_RESERVED) &&
    108            (Hob.ResourceDescriptor->ResourceAttribute == ResourceAttribute))) {
    109         //
    110         // Need memory above 1MB to be collected here
    111         //
    112         if (Hob.ResourceDescriptor->PhysicalStart >= BASE_1MB &&
    113             Hob.ResourceDescriptor->PhysicalStart < (EFI_PHYSICAL_ADDRESS) BASE_4GB) {
    114           *LowMemoryLength += (UINT64) (Hob.ResourceDescriptor->ResourceLength);
    115         } else if (Hob.ResourceDescriptor->PhysicalStart >= (EFI_PHYSICAL_ADDRESS) BASE_4GB) {
    116           *HighMemoryLength += (UINT64) (Hob.ResourceDescriptor->ResourceLength);
    117         }
    118       }
    119     }
    120     Hob.Raw = GET_NEXT_HOB (Hob);
    121   }
    122 }
    123