/** @file
|
PCH PCR library.
|
All function in this library is available for PEI, DXE, and SMM,
|
But do not support UEFI RUNTIME environment call.
|
|
Copyright (c) 2019 Intel Corporation. All rights reserved. <BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
**/
|
|
#include <Base.h>
|
#include <Uefi/UefiBaseType.h>
|
#include <Library/IoLib.h>
|
#include <Library/DebugLib.h>
|
#include <Library/BaseLib.h>
|
#include <Library/PchPcrLib.h>
|
#include <Register/PchRegsPcr.h>
|
|
#ifndef MDEPKG_NDEBUG
|
/**
|
Checks if the offset is valid for a given memory access width
|
|
@param[in] Offset Offset of a register
|
@param[in] Size Size of memory access in bytes
|
|
@retval FALSE Offset is not valid for a given memory access
|
@retval TRUE Offset is valid
|
**/
|
STATIC
|
BOOLEAN
|
PchIsPcrOffsetValid (
|
IN UINT32 Offset,
|
IN UINTN Size
|
)
|
{
|
if (((Offset & (Size - 1)) != 0) || (Offset > 0xFFFF)) {
|
DEBUG ((DEBUG_ERROR, "PCR offset error. Invalid Offset: %x Size: %x", Offset, Size));
|
return FALSE;
|
} else {
|
return TRUE;
|
}
|
}
|
#endif
|
|
/**
|
Read PCR register.
|
It returns PCR register and size in 4bytes.
|
The Offset should not exceed 0xFFFF and must be aligned with size.
|
|
@param[in] Pid Port ID
|
@param[in] Offset Register offset of this Port ID
|
|
@retval UINT32 PCR register value.
|
**/
|
UINT32
|
PchPcrRead32 (
|
IN PCH_SBI_PID Pid,
|
IN UINT32 Offset
|
)
|
{
|
#ifndef MDEPKG_NDEBUG
|
ASSERT (PchIsPcrOffsetValid (Offset, 4));
|
#endif
|
return MmioRead32 (PCH_PCR_ADDRESS (Pid, Offset));
|
}
|
|
/**
|
Read PCR register.
|
It returns PCR register and size in 2bytes.
|
The Offset should not exceed 0xFFFF and must be aligned with size.
|
|
@param[in] Pid Port ID
|
@param[in] Offset Register offset of this Port ID
|
|
@retval UINT16 PCR register value.
|
**/
|
UINT16
|
PchPcrRead16 (
|
IN PCH_SBI_PID Pid,
|
IN UINT32 Offset
|
)
|
{
|
#ifndef MDEPKG_NDEBUG
|
ASSERT (PchIsPcrOffsetValid (Offset, 2));
|
#endif
|
return MmioRead16 (PCH_PCR_ADDRESS (Pid, Offset));
|
}
|
|
/**
|
Read PCR register.
|
It returns PCR register and size in 1bytes.
|
The Offset should not exceed 0xFFFF and must be aligned with size.
|
|
@param[in] Pid Port ID
|
@param[in] Offset Register offset of this Port ID
|
|
@retval UINT8 PCR register value
|
**/
|
UINT8
|
PchPcrRead8 (
|
IN PCH_SBI_PID Pid,
|
IN UINT32 Offset
|
)
|
{
|
return MmioRead8 (PCH_PCR_ADDRESS (Pid, Offset));
|
}
|
|
/**
|
Write PCR register.
|
It programs PCR register and size in 4bytes.
|
The Offset should not exceed 0xFFFF and must be aligned with size.
|
|
@param[in] Pid Port ID
|
@param[in] Offset Register offset of Port ID.
|
@param[in] Data Input Data. Must be the same size as Size parameter.
|
|
@retval UINT32 Value written to register
|
**/
|
UINT32
|
PchPcrWrite32 (
|
IN PCH_SBI_PID Pid,
|
IN UINT32 Offset,
|
IN UINT32 Data
|
)
|
{
|
#ifndef MDEPKG_NDEBUG
|
ASSERT (PchIsPcrOffsetValid (Offset, 4));
|
#endif
|
MmioWrite32 (PCH_PCR_ADDRESS (Pid, Offset), Data);
|
|
return Data;
|
}
|
|
/**
|
Write PCR register.
|
It programs PCR register and size in 2bytes.
|
The Offset should not exceed 0xFFFF and must be aligned with size.
|
|
@param[in] Pid Port ID
|
@param[in] Offset Register offset of Port ID.
|
@param[in] Data Input Data. Must be the same size as Size parameter.
|
|
@retval UINT16 Value written to register
|
**/
|
UINT16
|
PchPcrWrite16 (
|
IN PCH_SBI_PID Pid,
|
IN UINT32 Offset,
|
IN UINT16 Data
|
)
|
{
|
#ifndef MDEPKG_NDEBUG
|
ASSERT (PchIsPcrOffsetValid (Offset, 2));
|
#endif
|
MmioWrite16 (PCH_PCR_ADDRESS (Pid, Offset), Data);
|
|
return Data;
|
}
|
|
/**
|
Write PCR register.
|
It programs PCR register and size in 1bytes.
|
The Offset should not exceed 0xFFFF and must be aligned with size.
|
|
@param[in] Pid Port ID
|
@param[in] Offset Register offset of Port ID.
|
@param[in] Data Input Data. Must be the same size as Size parameter.
|
|
@retval UINT8 Value written to register
|
**/
|
UINT8
|
PchPcrWrite8 (
|
IN PCH_SBI_PID Pid,
|
IN UINT32 Offset,
|
IN UINT8 Data
|
)
|
{
|
MmioWrite8 (PCH_PCR_ADDRESS (Pid, Offset), Data);
|
|
return Data;
|
}
|
|
/**
|
Write PCR register.
|
It programs PCR register and size in 4bytes.
|
The Offset should not exceed 0xFFFF and must be aligned with size.
|
|
@param[in] Pid Port ID
|
@param[in] Offset Register offset of Port ID.
|
@param[in] AndData AND Data. Must be the same size as Size parameter.
|
@param[in] OrData OR Data. Must be the same size as Size parameter.
|
|
@retval UINT32 Value written to register
|
|
**/
|
UINT32
|
PchPcrAndThenOr32 (
|
IN PCH_SBI_PID Pid,
|
IN UINT32 Offset,
|
IN UINT32 AndData,
|
IN UINT32 OrData
|
)
|
{
|
return PchPcrWrite32 (Pid, Offset, (PchPcrRead32 (Pid, Offset) & AndData) | OrData);
|
}
|
|
/**
|
Write PCR register and read back.
|
The read back ensures the PCR cycle is completed before next operation.
|
It programs PCR register and size in 4bytes.
|
The Offset should not exceed 0xFFFF and must be aligned with size.
|
|
@param[in] Pid Port ID
|
@param[in] Offset Register offset of Port ID.
|
@param[in] AndData AND Data. Must be the same size as Size parameter.
|
@param[in] OrData OR Data. Must be the same size as Size parameter.
|
|
@retval UINT32 Value read back from the register
|
**/
|
UINT32
|
PchPcrAndThenOr32WithReadback (
|
IN PCH_SBI_PID Pid,
|
IN UINT32 Offset,
|
IN UINT32 AndData,
|
IN UINT32 OrData
|
)
|
{
|
PchPcrWrite32 (Pid, Offset, (PchPcrRead32 (Pid, Offset) & AndData) | OrData);
|
return PchPcrRead32 (Pid, Offset);
|
}
|
|
/**
|
Write PCR register.
|
It programs PCR register and size in 2bytes.
|
The Offset should not exceed 0xFFFF and must be aligned with size.
|
|
@param[in] Pid Port ID
|
@param[in] Offset Register offset of Port ID.
|
@param[in] AndData AND Data. Must be the same size as Size parameter.
|
@param[in] OrData OR Data. Must be the same size as Size parameter.
|
|
@retval UINT16 Value written to register
|
|
**/
|
UINT16
|
PchPcrAndThenOr16 (
|
IN PCH_SBI_PID Pid,
|
IN UINT32 Offset,
|
IN UINT16 AndData,
|
IN UINT16 OrData
|
)
|
{
|
return PchPcrWrite16 (Pid, Offset, (PchPcrRead16 (Pid, Offset) & AndData) | OrData);
|
}
|
|
/**
|
Write PCR register.
|
It programs PCR register and size in 1bytes.
|
The Offset should not exceed 0xFFFF and must be aligned with size.
|
|
@param[in] Pid Port ID
|
@param[in] Offset Register offset of Port ID.
|
@param[in] AndData AND Data. Must be the same size as Size parameter.
|
@param[in] OrData OR Data. Must be the same size as Size parameter.
|
|
@retval UINT8 Value written to register
|
|
**/
|
UINT8
|
PchPcrAndThenOr8 (
|
IN PCH_SBI_PID Pid,
|
IN UINT32 Offset,
|
IN UINT8 AndData,
|
IN UINT8 OrData
|
)
|
{
|
return PchPcrWrite8 (Pid, Offset, (PchPcrRead8 (Pid, Offset) & AndData) | OrData);
|
}
|
|
