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/** @file
PlatformInitLib header file.
Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef PLATFORM_INIT_LIB_H_
#define PLATFORM_INIT_LIB_H_
#include <PiPei.h>
#pragma pack(1)
typedef struct {
EFI_HOB_GUID_TYPE GuidHeader;
UINT16 HostBridgeDevId;
UINT64 PcdConfidentialComputingGuestAttr;
BOOLEAN SevEsIsEnabled;
UINT32 BootMode;
BOOLEAN S3Supported;
BOOLEAN SmmSmramRequire;
BOOLEAN Q35SmramAtDefaultSmbase;
UINT16 Q35TsegMbytes;
UINT64 FirstNonAddress;
UINT8 PhysMemAddressWidth;
UINT32 Uc32Base;
UINT32 Uc32Size;
BOOLEAN PcdSetNxForStack;
UINT64 PcdTdxSharedBitMask;
UINT64 PcdPciMmio64Base;
UINT64 PcdPciMmio64Size;
UINT32 PcdPciMmio32Base;
UINT32 PcdPciMmio32Size;
UINT64 PcdPciIoBase;
UINT64 PcdPciIoSize;
UINT64 PcdEmuVariableNvStoreReserved;
UINT32 PcdCpuBootLogicalProcessorNumber;
UINT32 PcdCpuMaxLogicalProcessorNumber;
UINT32 DefaultMaxCpuNumber;
UINT32 S3AcpiReservedMemoryBase;
UINT32 S3AcpiReservedMemorySize;
UINT64 FeatureControlValue;
BOOLEAN QemuFwCfgChecked;
BOOLEAN QemuFwCfgSupported;
BOOLEAN QemuFwCfgDmaSupported;
} EFI_HOB_PLATFORM_INFO;
#pragma pack()
/**
Reads 8-bits of CMOS data.
Reads the 8-bits of CMOS data at the location specified by Index.
The 8-bit read value is returned.
@param Index The CMOS location to read.
@return The value read.
**/
UINT8
EFIAPI
PlatformCmosRead8 (
IN UINTN Index
);
/**
Writes 8-bits of CMOS data.
Writes 8-bits of CMOS data to the location specified by Index
with the value specified by Value and returns Value.
@param Index The CMOS location to write.
@param Value The value to write to CMOS.
@return The value written to CMOS.
**/
UINT8
EFIAPI
PlatformCmosWrite8 (
IN UINTN Index,
IN UINT8 Value
);
/**
Dump the CMOS content
*/
VOID
EFIAPI
PlatformDebugDumpCmos (
VOID
);
VOID
EFIAPI
PlatformAddIoMemoryBaseSizeHob (
IN EFI_PHYSICAL_ADDRESS MemoryBase,
IN UINT64 MemorySize
);
VOID
EFIAPI
PlatformAddIoMemoryRangeHob (
IN EFI_PHYSICAL_ADDRESS MemoryBase,
IN EFI_PHYSICAL_ADDRESS MemoryLimit
);
VOID
EFIAPI
PlatformAddMemoryBaseSizeHob (
IN EFI_PHYSICAL_ADDRESS MemoryBase,
IN UINT64 MemorySize
);
VOID
EFIAPI
PlatformAddMemoryRangeHob (
IN EFI_PHYSICAL_ADDRESS MemoryBase,
IN EFI_PHYSICAL_ADDRESS MemoryLimit
);
VOID
EFIAPI
PlatformAddReservedMemoryBaseSizeHob (
IN EFI_PHYSICAL_ADDRESS MemoryBase,
IN UINT64 MemorySize,
IN BOOLEAN Cacheable
);
VOID
EFIAPI
PlatformQemuUc32BaseInitialization (
IN OUT EFI_HOB_PLATFORM_INFO *PlatformInfoHob
);
UINT32
EFIAPI
PlatformGetSystemMemorySizeBelow4gb (
IN EFI_HOB_PLATFORM_INFO *PlatformInfoHob
);
/**
Initialize the PhysMemAddressWidth field in PlatformInfoHob based on guest RAM size.
**/
VOID
EFIAPI
PlatformAddressWidthInitialization (
IN OUT EFI_HOB_PLATFORM_INFO *PlatformInfoHob
);
/**
Peform Memory Detection for QEMU / KVM
**/
VOID
EFIAPI
PlatformQemuInitializeRam (
IN EFI_HOB_PLATFORM_INFO *PlatformInfoHob
);
VOID
EFIAPI
PlatformQemuInitializeRamForS3 (
IN EFI_HOB_PLATFORM_INFO *PlatformInfoHob
);
VOID
EFIAPI
PlatformMemMapInitialization (
IN OUT EFI_HOB_PLATFORM_INFO *PlatformInfoHob
);
/**
* Fetch "opt/ovmf/PcdSetNxForStack" from QEMU
*
* @param Setting The pointer to the setting of "/opt/ovmf/PcdSetNxForStack".
* @return EFI_SUCCESS Successfully fetch the settings.
*/
EFI_STATUS
EFIAPI
PlatformNoexecDxeInitialization (
IN OUT EFI_HOB_PLATFORM_INFO *PlatformInfoHob
);
VOID
EFIAPI
PlatformMiscInitialization (
IN EFI_HOB_PLATFORM_INFO *PlatformInfoHob
);
/**
Fetch the boot CPU count and the possible CPU count from QEMU, and expose
them to UefiCpuPkg modules.
**/
VOID
EFIAPI
PlatformMaxCpuCountInitialization (
IN OUT EFI_HOB_PLATFORM_INFO *PlatformInfoHob
);
/**
In Tdx guest, some information need to be passed from host VMM to guest
firmware. For example, the memory resource, etc. These information are
prepared by host VMM and put in HobList which is described in TdxMetadata.
Information in HobList is treated as external input. From the security
perspective before it is consumed, it should be validated.
@retval EFI_SUCCESS Successfully process the hoblist
@retval Others Other error as indicated
**/
EFI_STATUS
EFIAPI
ProcessTdxHobList (
VOID
);
/**
In Tdx guest, the system memory is passed in TdHob by host VMM. So
the major task of PlatformTdxPublishRamRegions is to walk thru the
TdHob list and transfer the ResourceDescriptorHob and MemoryAllocationHob
to the hobs in DXE phase.
MemoryAllocationHob should also be created for Mailbox and Ovmf work area.
**/
VOID
EFIAPI
PlatformTdxPublishRamRegions (
VOID
);
/**
Check the integrity of NvVarStore.
@param[in] NvVarStoreBase - A pointer to NvVarStore header
@param[in] NvVarStoreSize - NvVarStore size
@retval TRUE - The NvVarStore is valid.
@retval FALSE - The NvVarStore is invalid.
**/
BOOLEAN
EFIAPI
PlatformValidateNvVarStore (
IN UINT8 *NvVarStoreBase,
IN UINT32 NvVarStoreSize
);
/**
Allocate storage for NV variables early on so it will be
at a consistent address. Since VM memory is preserved
across reboots, this allows the NV variable storage to survive
a VM reboot.
*
* @retval VOID* The pointer to the storage for NV Variables
*/
VOID *
EFIAPI
PlatformReserveEmuVariableNvStore (
VOID
);
/**
When OVMF is lauched with -bios parameter, UEFI variables will be
partially emulated, and non-volatile variables may lose their contents
after a reboot. This makes the secure boot feature not working.
This function is used to initialize the EmuVariableNvStore
with the conent in PcdOvmfFlashNvStorageVariableBase.
@param[in] EmuVariableNvStore - A pointer to EmuVariableNvStore
@retval EFI_SUCCESS - Successfully init the EmuVariableNvStore
@retval Others - As the error code indicates
*/
EFI_STATUS
EFIAPI
PlatformInitEmuVariableNvStore (
IN VOID *EmuVariableNvStore
);
#endif // PLATFORM_INIT_LIB_H_
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