/** @file
|
PCH private PMC Library.
|
All function in this library is available for PEI, DXE, and SMM,
|
But do not support UEFI RUNTIME environment call.
|
|
Copyright (c) 2021, 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/PchCycleDecodingLib.h>
|
#include <Library/S3BootScriptLib.h>
|
#include <Library/PmcLib.h>
|
#include <Library/PmcPrivateLib.h>
|
|
/**
|
This S3 BootScript only function disables triggering Global Reset of both
|
the Host and the ME partitions after CF9h write of 6h or Eh.
|
**/
|
VOID
|
PmcDisableCf9GlobalResetInS3BootScript (
|
VOID
|
)
|
{
|
UINT32 Data;
|
|
UINT32 PchPwrmBase;
|
PchPwrmBase = PmcGetPwrmBase ();
|
|
Data = MmioRead32 (PchPwrmBase + R_PMC_PWRM_ETR3);
|
|
Data &= (UINT32) ~B_PMC_PWRM_ETR3_CF9GR;
|
|
S3BootScriptSaveMemWrite (
|
S3BootScriptWidthUint32,
|
(UINTN) PchPwrmBase +
|
R_PMC_PWRM_ETR3,
|
1,
|
&Data
|
);
|
}
|
|
/**
|
This S3 BootScript only function disables triggering Global Reset of both
|
the Host and the ME partitions after CF9h write of 6h or Eh.
|
Global Reset configuration is locked after programming
|
**/
|
VOID
|
PmcDisableCf9GlobalResetWithLockInS3BootScript (
|
VOID
|
)
|
{
|
UINT32 Data;
|
|
UINT32 PchPwrmBase;
|
PchPwrmBase = PmcGetPwrmBase ();
|
|
Data = MmioRead32 (PchPwrmBase + R_PMC_PWRM_ETR3);
|
|
Data &= (UINT32) ~B_PMC_PWRM_ETR3_CF9GR;
|
Data |= (UINT32) B_PMC_PWRM_ETR3_CF9LOCK;
|
|
S3BootScriptSaveMemWrite (
|
S3BootScriptWidthUint32,
|
(UINTN) PchPwrmBase +
|
R_PMC_PWRM_ETR3,
|
1,
|
&Data
|
);
|
}
|
|
/**
|
This function sets SMI Lock with S3 Boot Script programming
|
**/
|
VOID
|
PmcLockSmiWithS3BootScript (
|
VOID
|
)
|
{
|
UINT32 PchPwrmBase;
|
|
PchPwrmBase = PmcGetPwrmBase ();
|
|
MmioOr8 ((UINTN) (PchPwrmBase + R_PMC_PWRM_GEN_PMCON_B), B_PMC_PWRM_GEN_PMCON_B_SMI_LOCK);
|
|
S3BootScriptSaveMemWrite (
|
S3BootScriptWidthUint8,
|
(UINTN) (PchPwrmBase + R_PMC_PWRM_GEN_PMCON_B),
|
1,
|
(VOID *) (UINTN) (PchPwrmBase + R_PMC_PWRM_GEN_PMCON_B)
|
);
|
}
|
|
/**
|
This function sets eSPI SMI Lock
|
@attention This function must be called after eSPI SMI generation has been enabled.
|
This setting is required in all boot modes and before EndOfDxe.
|
If set value will be restored upon S3 resume by bootscript.
|
**/
|
VOID
|
PmcLockEspiSmiWithS3BootScript (
|
VOID
|
)
|
{
|
UINT8 Data8Or;
|
UINT8 Data8And;
|
|
Data8Or = (UINT8) (B_PMC_PWRM_GEN_PMCON_A_ESPI_SMI_LOCK >> 8);
|
Data8And = (UINT8)~((B_PMC_PWRM_GEN_PMCON_A_PWR_FLR | B_PMC_PWRM_GEN_PMCON_A_HOST_RST_STS) >> 8);
|
|
MmioAndThenOr8 (PmcGetPwrmBase () + R_PMC_PWRM_GEN_PMCON_A + 1, Data8And, Data8Or);
|
S3BootScriptSaveMemReadWrite (
|
S3BootScriptWidthUint8,
|
PmcGetPwrmBase () + R_PMC_PWRM_GEN_PMCON_A + 1,
|
&Data8Or,
|
&Data8And
|
);
|
}
|
