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