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- /** @file
- Copyright (c) 2004 - 2019, Intel Corporation. All rights reserved.<BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
- Module Name:
- MemoryPeim.c
- Abstract:
- Tiano PEIM to provide the platform support functionality.
- This file implements the Platform Memory Range PPI
- --*/
- #include "PlatformEarlyInit.h"
- //
- // Need min. of 48MB PEI phase
- //
- #define PEI_MIN_MEMORY_SIZE (6 * 0x800000)
- #define PEI_RECOVERY_MIN_MEMORY_SIZE (6 * 0x800000)
- //
- // This is the memory needed for PEI to start up DXE.
- //
- // Over-estimating this size will lead to higher fragmentation
- // of main memory. Under-estimation of this will cause catastrophic
- // failure of PEI to load DXE. Generally, the failure may only be
- // realized during capsule updates.
- //
- #define PRERESERVED_PEI_MEMORY ( \
- EFI_SIZE_TO_PAGES (3 * 0x800000) /* PEI Core memory based stack */ \
- )
- EFI_MEMORY_TYPE_INFORMATION mDefaultMemoryTypeInformation[] = {
- { EfiACPIReclaimMemory, 0x40 }, // 0x40 pages = 256k for ASL
- { EfiACPIMemoryNVS, 0x40 }, // 0x40 pages = 256k MB for S3, SMM, HII, etc
- { EfiReservedMemoryType, 0x80 }, // 512k for BIOS Reserved
- { EfiRuntimeServicesCode, 0x100 },
- { EfiRuntimeServicesData, 0x100 },
- { EfiMaxMemoryType, 0 }
- };
- STATIC
- EFI_STATUS
- GetMemorySize (
- IN CONST EFI_PEI_SERVICES **PeiServices,
- OUT UINT64 *LowMemoryLength,
- OUT UINT64 *HighMemoryLength
- );
- /**
- Initializes the valid address mask for MTRRs.
- This function initializes the valid bits mask and valid address mask for MTRRs.
- **/
- UINT64
- InitializeAddressMtrrMask (
- VOID
- )
- {
- UINT32 RegEax;
- UINT8 PhysicalAddressBits;
- UINT64 ValidMtrrBitsMask;
- AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);
- if (RegEax >= 0x80000008) {
- AsmCpuid (0x80000008, &RegEax, NULL, NULL, NULL);
- PhysicalAddressBits = (UINT8) RegEax;
- } else {
- PhysicalAddressBits = 36;
- }
- ValidMtrrBitsMask = LShiftU64 (1, PhysicalAddressBits) - 1;
- return (ValidMtrrBitsMask & 0xfffffffffffff000ULL);
- }
- EFI_STATUS
- EFIAPI
- SetPeiCacheMode (
- IN CONST EFI_PEI_SERVICES **PeiServices
- )
- {
- EFI_STATUS Status;
- PEI_CACHE_PPI *CachePpi;
- EFI_BOOT_MODE BootMode;
- UINT64 MemoryLength;
- UINT64 MemOverflow;
- UINT64 MemoryLengthUc;
- UINT64 MaxMemoryLength;
- UINT64 LowMemoryLength;
- UINT64 HighMemoryLength;
- UINT8 Index;
- MTRR_SETTINGS MtrrSetting;
- UINT64 ValidMtrrAddressMask;
- //
- // Load Cache PPI
- //
- Status = (**PeiServices).LocatePpi (
- PeiServices,
- &gPeiCachePpiGuid, // GUID
- 0, // Instance
- NULL, // EFI_PEI_PPI_DESCRIPTOR
- (void **)&CachePpi // PPI
- );
- if (!EFI_ERROR(Status)) {
- //
- // Clear the CAR Settings (Default Cache Type => UC)
- //
- DEBUG ((EFI_D_INFO, "Reset cache attribute and disable CAR. \n"));
- CachePpi->ResetCache(
- (EFI_PEI_SERVICES**)PeiServices,
- CachePpi
- );
- }
- //
- // Variable initialization
- //
- LowMemoryLength = 0;
- HighMemoryLength = 0;
- MemoryLengthUc = 0;
- Status = (*PeiServices)->GetBootMode (
- PeiServices,
- &BootMode
- );
- ValidMtrrAddressMask = InitializeAddressMtrrMask ();
- //
- // Determine memory usage
- //
- GetMemorySize (
- PeiServices,
- &LowMemoryLength,
- &HighMemoryLength
- );
- LowMemoryLength = (EFI_PHYSICAL_ADDRESS)MmPci32( 0, 0, 2, 0, 0x70);
- LowMemoryLength &= 0xFFF00000ULL;
- MaxMemoryLength = LowMemoryLength;
- //
- // Round up to nearest 256MB with high memory and 64MB w/o high memory
- //
- if (HighMemoryLength != 0 ) {
- MemOverflow = (LowMemoryLength & 0x0fffffff);
- if (MemOverflow != 0) {
- MaxMemoryLength = LowMemoryLength + (0x10000000 - MemOverflow);
- }
- } else {
- MemOverflow = (LowMemoryLength & 0x03ffffff);
- if (MemOverflow != 0) {
- MaxMemoryLength = LowMemoryLength + (0x4000000 - MemOverflow);
- }
- }
- ZeroMem (&MtrrSetting, sizeof(MTRR_SETTINGS));
- for (Index = 0; Index < 2; Index++) {
- MtrrSetting.Fixed.Mtrr[Index]=0x0606060606060606;
- }
- for (Index = 2; Index < 11; Index++) {
- MtrrSetting.Fixed.Mtrr[Index]=0x0505050505050505;
- }
- //
- // Cache the flash area to improve the boot performance in PEI phase
- //
- Index = 0;
- ((MSR_IA32_MTRR_PHYSBASE_REGISTER *) &MtrrSetting.Variables.Mtrr[0].Base)->Uint64 = FixedPcdGet32 (PcdFlashAreaBaseAddress);
- ((MSR_IA32_MTRR_PHYSBASE_REGISTER *) &MtrrSetting.Variables.Mtrr[0].Base)->Bits.Type = CacheWriteProtected;
- ((MSR_IA32_MTRR_PHYSMASK_REGISTER *) &MtrrSetting.Variables.Mtrr[0].Mask)->Uint64 = (~((UINT64)(FixedPcdGet32 (PcdFlashAreaSize) - 1))) & ValidMtrrAddressMask;
- ((MSR_IA32_MTRR_PHYSMASK_REGISTER *) &MtrrSetting.Variables.Mtrr[0].Mask)->Bits.V = 1;
- Index ++;
- MemOverflow =0;
- while (MaxMemoryLength > MemOverflow){
- MemoryLength = MaxMemoryLength - MemOverflow;
- MemoryLength = GetPowerOfTwo64 (MemoryLength);
- ((MSR_IA32_MTRR_PHYSBASE_REGISTER *) &MtrrSetting.Variables.Mtrr[Index].Base)->Uint64 = MemOverflow & ValidMtrrAddressMask;
- ((MSR_IA32_MTRR_PHYSBASE_REGISTER *) &MtrrSetting.Variables.Mtrr[Index].Base)->Bits.Type = CacheWriteBack;
- ((MSR_IA32_MTRR_PHYSMASK_REGISTER *) &MtrrSetting.Variables.Mtrr[Index].Mask)->Uint64 = (~(MemoryLength - 1)) & ValidMtrrAddressMask;
- ((MSR_IA32_MTRR_PHYSMASK_REGISTER *) &MtrrSetting.Variables.Mtrr[Index].Mask)->Bits.V = 1;
- MemOverflow += MemoryLength;
- Index++;
- }
- MemoryLength = LowMemoryLength;
- while (MaxMemoryLength != MemoryLength) {
- MemoryLengthUc = GetPowerOfTwo64 (MaxMemoryLength - MemoryLength);
- ((MSR_IA32_MTRR_PHYSBASE_REGISTER *) &MtrrSetting.Variables.Mtrr[Index].Base)->Uint64 = (MaxMemoryLength - MemoryLengthUc) & ValidMtrrAddressMask;
- ((MSR_IA32_MTRR_PHYSBASE_REGISTER *) &MtrrSetting.Variables.Mtrr[Index].Base)->Bits.Type = CacheUncacheable;
- ((MSR_IA32_MTRR_PHYSMASK_REGISTER *) &MtrrSetting.Variables.Mtrr[Index].Mask)->Uint64 = (~(MemoryLengthUc - 1)) & ValidMtrrAddressMask;
- ((MSR_IA32_MTRR_PHYSMASK_REGISTER *) &MtrrSetting.Variables.Mtrr[Index].Mask)->Bits.V = 1;
- MaxMemoryLength -= MemoryLengthUc;
- Index++;
- }
- MemOverflow =0x100000000;
- while (HighMemoryLength > 0) {
- MemoryLength = HighMemoryLength;
- MemoryLength = GetPowerOfTwo64 (MemoryLength);
- if (MemoryLength > MemOverflow){
- MemoryLength = MemOverflow;
- }
- ((MSR_IA32_MTRR_PHYSBASE_REGISTER *) &MtrrSetting.Variables.Mtrr[Index].Base)->Uint64 = MemOverflow & ValidMtrrAddressMask;
- ((MSR_IA32_MTRR_PHYSBASE_REGISTER *) &MtrrSetting.Variables.Mtrr[Index].Base)->Bits.Type = CacheWriteBack;
- ((MSR_IA32_MTRR_PHYSMASK_REGISTER *) &MtrrSetting.Variables.Mtrr[Index].Mask)->Uint64 = (~(MemoryLength - 1)) & ValidMtrrAddressMask;
- ((MSR_IA32_MTRR_PHYSMASK_REGISTER *) &MtrrSetting.Variables.Mtrr[Index].Mask)->Bits.V = 1;
- MemOverflow += MemoryLength;
- HighMemoryLength -= MemoryLength;
- Index++;
- }
- for (Index = 0; Index < MTRR_NUMBER_OF_VARIABLE_MTRR; Index++) {
- if (MtrrSetting.Variables.Mtrr[Index].Base == 0){
- break;
- }
- DEBUG ((EFI_D_INFO, "Base=%lx, Mask=%lx\n",MtrrSetting.Variables.Mtrr[Index].Base ,MtrrSetting.Variables.Mtrr[Index].Mask));
- }
- //
- // set FE/E bits for IA32_MTRR_DEF_TYPE
- //
- MtrrSetting.MtrrDefType |= 3 <<10;
- MtrrSetAllMtrrs(&MtrrSetting);
- //
- // Dump MTRR Setting
- //
- MtrrDebugPrintAllMtrrs ();
- return EFI_SUCCESS;
- }
- EFI_STATUS
- EFIAPI
- SetDxeCacheMode (
- IN CONST EFI_PEI_SERVICES **PeiServices
- )
- {
- //
- // This is not needed for now.
- //
- return EFI_SUCCESS;
- }
- STATIC
- EFI_STATUS
- GetMemorySize (
- IN CONST EFI_PEI_SERVICES **PeiServices,
- OUT UINT64 *LowMemoryLength,
- OUT UINT64 *HighMemoryLength
- )
- {
- EFI_STATUS Status;
- EFI_PEI_HOB_POINTERS Hob;
- *HighMemoryLength = 0;
- *LowMemoryLength = 0x100000;
- //
- // Get the HOB list for processing
- //
- Status = (*PeiServices)->GetHobList (PeiServices, (void **)&Hob.Raw);
- if (EFI_ERROR(Status)) {
- return Status;
- }
- //
- // 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) {
- //
- // Need memory above 1MB to be collected here
- //
- if (Hob.ResourceDescriptor->PhysicalStart >= 0x100000 &&
- Hob.ResourceDescriptor->PhysicalStart < (EFI_PHYSICAL_ADDRESS) 0x100000000) {
- *LowMemoryLength += (UINT64) (Hob.ResourceDescriptor->ResourceLength);
- } else if (Hob.ResourceDescriptor->PhysicalStart >= (EFI_PHYSICAL_ADDRESS) 0x100000000) {
- *HighMemoryLength += (UINT64) (Hob.ResourceDescriptor->ResourceLength);
- }
- }
- }
- Hob.Raw = GET_NEXT_HOB (Hob);
- }
- return EFI_SUCCESS;
- }
- /**
- Publish Memory Type Information.
- @param NULL
- @retval EFI_SUCCESS Success.
- @retval Others Errors have occurred.
- **/
- EFI_STATUS
- EFIAPI
- PublishMemoryTypeInfo (
- void
- )
- {
- EFI_STATUS Status;
- EFI_PEI_READ_ONLY_VARIABLE2_PPI *Variable;
- UINTN DataSize;
- EFI_MEMORY_TYPE_INFORMATION MemoryData[EfiMaxMemoryType + 1];
- Status = PeiServicesLocatePpi (
- &gEfiPeiReadOnlyVariable2PpiGuid,
- 0,
- NULL,
- (void **)&Variable
- );
- if (EFI_ERROR(Status)) {
- DEBUG((EFI_D_ERROR, "WARNING: Locating Pei variable failed 0x%x \n", Status));
- DEBUG((EFI_D_ERROR, "Build Hob from default\n"));
- //
- // Build the default GUID'd HOB for DXE
- //
- BuildGuidDataHob (
- &gEfiMemoryTypeInformationGuid,
- mDefaultMemoryTypeInformation,
- sizeof (mDefaultMemoryTypeInformation)
- );
- return Status;
- }
- DataSize = sizeof (MemoryData);
- //
- // This variable is saved in BDS stage. Now read it back
- //
- Status = Variable->GetVariable (
- Variable,
- EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,
- &gEfiMemoryTypeInformationGuid,
- NULL,
- &DataSize,
- &MemoryData
- );
- if (EFI_ERROR (Status)) {
- //
- //build default
- //
- DEBUG((EFI_D_ERROR, "Build Hob from default\n"));
- BuildGuidDataHob (
- &gEfiMemoryTypeInformationGuid,
- mDefaultMemoryTypeInformation,
- sizeof (mDefaultMemoryTypeInformation)
- );
- } else {
- //
- // Build the GUID'd HOB for DXE from variable
- //
- DEBUG((EFI_D_ERROR, "Build Hob from variable \n"));
- BuildGuidDataHob (
- &gEfiMemoryTypeInformationGuid,
- MemoryData,
- DataSize
- );
- }
- return Status;
- }
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