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/** @file
Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiPei.h>
#include <Register/Intel/Msr.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/DebugLib.h>
#include <Library/PcdLib.h>
#include <Library/HobLib.h>
#include <Library/PeiServicesLib.h>
#include <Library/FspCommonLib.h>
#include <FspGlobalData.h>
#include <FspEas.h>
/**
Get system memory resource descriptor by owner.
@param[in] OwnerGuid resource owner guid
**/
EFI_HOB_RESOURCE_DESCRIPTOR *
EFIAPI
FspGetResourceDescriptorByOwner (
IN EFI_GUID *OwnerGuid
)
{
EFI_PEI_HOB_POINTERS Hob;
//
// Get the HOB list for processing
//
Hob.Raw = GetHobList ();
//
// Collect memory ranges
//
while (!END_OF_HOB_LIST (Hob)) {
if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
if ((Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_MEMORY_RESERVED) && \
(CompareGuid (&Hob.ResourceDescriptor->Owner, OwnerGuid)))
{
return Hob.ResourceDescriptor;
}
}
Hob.Raw = GET_NEXT_HOB (Hob);
}
return NULL;
}
/**
Get system memory from HOB.
@param[in,out] LowMemoryLength less than 4G memory length
@param[in,out] HighMemoryLength greater than 4G memory length
**/
VOID
EFIAPI
FspGetSystemMemorySize (
IN OUT UINT64 *LowMemoryLength,
IN OUT UINT64 *HighMemoryLength
)
{
EFI_STATUS Status;
EFI_BOOT_MODE BootMode;
EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttribute;
EFI_PEI_HOB_POINTERS Hob;
ResourceAttribute = (
EFI_RESOURCE_ATTRIBUTE_PRESENT |
EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
);
Status = PeiServicesGetBootMode (&BootMode);
ASSERT_EFI_ERROR (Status);
if (BootMode != BOOT_ON_S3_RESUME) {
ResourceAttribute |= EFI_RESOURCE_ATTRIBUTE_TESTED;
}
*HighMemoryLength = 0;
*LowMemoryLength = SIZE_1MB;
//
// Get the HOB list for processing
//
Hob.Raw = GetHobList ();
//
// Collect memory ranges
//
while (!END_OF_HOB_LIST (Hob)) {
if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
if ((Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) ||
((Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_MEMORY_RESERVED) &&
(Hob.ResourceDescriptor->ResourceAttribute == ResourceAttribute)))
{
//
// Need memory above 1MB to be collected here
//
if ((Hob.ResourceDescriptor->PhysicalStart >= BASE_1MB) &&
(Hob.ResourceDescriptor->PhysicalStart < (EFI_PHYSICAL_ADDRESS)BASE_4GB))
{
*LowMemoryLength += (UINT64)(Hob.ResourceDescriptor->ResourceLength);
} else if (Hob.ResourceDescriptor->PhysicalStart >= (EFI_PHYSICAL_ADDRESS)BASE_4GB) {
*HighMemoryLength += (UINT64)(Hob.ResourceDescriptor->ResourceLength);
}
}
}
Hob.Raw = GET_NEXT_HOB (Hob);
}
}
/**
Calculate TemporaryRam Size using Base address.
@param[in] TemporaryRamBase the address of target memory
@param[out] TemporaryRamSize the size of target memory
**/
VOID
EFIAPI
ReadTemporaryRamSize (
IN UINT32 TemporaryRamBase,
OUT UINT32 *TemporaryRamSize
)
{
MSR_IA32_MTRRCAP_REGISTER Msr;
UINT32 MsrNum;
UINT32 MsrNumEnd;
if (TemporaryRamBase == 0) {
return;
}
*TemporaryRamSize = 0;
Msr.Uint64 = AsmReadMsr64 (MSR_IA32_MTRRCAP);
MsrNumEnd = MSR_IA32_MTRR_PHYSBASE0 + (2 * (Msr.Bits.VCNT));
for (MsrNum = MSR_IA32_MTRR_PHYSBASE0; MsrNum < MsrNumEnd; MsrNum += 2) {
if ((AsmReadMsr64 (MsrNum+1) & BIT11) != 0 ) {
if (TemporaryRamBase == (AsmReadMsr64 (MsrNum) & 0xFFFFF000)) {
*TemporaryRamSize = (~(AsmReadMsr64 (MsrNum + 1) & 0xFFFFF000) + 1);
break;
}
}
}
return;
}
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