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audk/MdeModulePkg/Universal/EsrtDxe/EsrtImpl.c

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/** @file
Esrt management implementation.
Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "EsrtImpl.h"
/**
Find Esrt Entry stored in ESRT repository.
@param[in] FwClass Firmware class guid in Esrt entry
@param[in] Attribute Esrt from Non FMP or FMP instance
@param[out] Entry Esrt entry returned
@retval EFI_SUCCESS Successfully find an Esrt entry
@retval EF_NOT_FOUND No Esrt entry found
**/
EFI_STATUS
GetEsrtEntry (
IN EFI_GUID *FwClass,
IN UINTN Attribute,
OUT EFI_SYSTEM_RESOURCE_ENTRY *Entry
)
{
EFI_STATUS Status;
CHAR16 *VariableName;
EFI_SYSTEM_RESOURCE_ENTRY *EsrtRepository;
UINTN RepositorySize;
UINTN Index;
UINTN EsrtNum;
EsrtRepository = NULL;
//
// Get Esrt index buffer
//
if (Attribute == ESRT_FROM_FMP) {
VariableName = EFI_ESRT_FMP_VARIABLE_NAME;
} else {
VariableName = EFI_ESRT_NONFMP_VARIABLE_NAME;
}
Status = GetVariable2 (
VariableName,
&gEfiCallerIdGuid,
(VOID **) &EsrtRepository,
&RepositorySize
);
if (EFI_ERROR(Status)) {
goto EXIT;
}
if (RepositorySize % sizeof(EFI_SYSTEM_RESOURCE_ENTRY) != 0) {
DEBUG((EFI_D_ERROR, "Repository Corrupt. Need to rebuild Repository.\n"));
Status = EFI_ABORTED;
goto EXIT;
}
Status = EFI_NOT_FOUND;
EsrtNum = RepositorySize/sizeof(EFI_SYSTEM_RESOURCE_ENTRY);
for (Index = 0; Index < EsrtNum; Index++) {
if (CompareGuid(FwClass, &EsrtRepository[Index].FwClass)) {
CopyMem(Entry, &EsrtRepository[Index], sizeof(EFI_SYSTEM_RESOURCE_ENTRY));
Status = EFI_SUCCESS;
break;
}
}
EXIT:
if (EsrtRepository != NULL) {
FreePool(EsrtRepository);
}
return Status;
}
/**
Insert a new ESRT entry into ESRT Cache repository.
@param[in] Entry Esrt entry to be set
@param[in] Attribute Esrt from Esrt private protocol or FMP instance
@retval EFI_SUCCESS Successfully set a variable.
**/
EFI_STATUS
InsertEsrtEntry(
IN EFI_SYSTEM_RESOURCE_ENTRY *Entry,
UINTN Attribute
)
{
EFI_STATUS Status;
CHAR16 *VariableName;
EFI_SYSTEM_RESOURCE_ENTRY *EsrtRepository;
UINTN RepositorySize;
EFI_SYSTEM_RESOURCE_ENTRY *EsrtRepositoryNew;
EsrtRepository = NULL;
EsrtRepositoryNew = NULL;
//
// Get Esrt index buffer
//
if (Attribute == ESRT_FROM_FMP) {
VariableName = EFI_ESRT_FMP_VARIABLE_NAME;
} else {
VariableName = EFI_ESRT_NONFMP_VARIABLE_NAME;
}
Status = GetVariable2 (
VariableName,
&gEfiCallerIdGuid,
(VOID **) &EsrtRepository,
&RepositorySize
);
if (Status == EFI_NOT_FOUND) {
//
// If not exist, create new Esrt cache repository
//
Status = gRT->SetVariable(
VariableName,
&gEfiCallerIdGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
sizeof(EFI_SYSTEM_RESOURCE_ENTRY),
Entry
);
return Status;
} else if (Status == EFI_SUCCESS) {
//
// if exist, update Esrt cache repository
//
if (RepositorySize % sizeof(EFI_SYSTEM_RESOURCE_ENTRY) != 0) {
DEBUG((EFI_D_ERROR, "Repository Corrupt. Need to rebuild Repository.\n"));
//
// Repository is corrupt. Clear Repository before insert new entry
//
Status = gRT->SetVariable(
VariableName,
&gEfiCallerIdGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
0,
EsrtRepository
);
FreePool(EsrtRepository);
RepositorySize = 0;
EsrtRepository = NULL;
}
//
// Check Repository size constraint
//
if ((Attribute == ESRT_FROM_FMP && RepositorySize >= PcdGet32(PcdMaxFmpEsrtCacheNum) * sizeof(EFI_SYSTEM_RESOURCE_ENTRY))
||(Attribute == ESRT_FROM_NONFMP && RepositorySize >= PcdGet32(PcdMaxNonFmpEsrtCacheNum) * sizeof(EFI_SYSTEM_RESOURCE_ENTRY)) ) {
Status = EFI_OUT_OF_RESOURCES;
goto EXIT;
}
EsrtRepositoryNew = AllocatePool(RepositorySize + sizeof(EFI_SYSTEM_RESOURCE_ENTRY));
if (EsrtRepositoryNew == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto EXIT;
}
if (RepositorySize != 0 && EsrtRepository != NULL) {
CopyMem(EsrtRepositoryNew, EsrtRepository, RepositorySize);
}
CopyMem((UINT8 *)EsrtRepositoryNew + RepositorySize, Entry, sizeof(EFI_SYSTEM_RESOURCE_ENTRY));
Status = gRT->SetVariable(
VariableName,
&gEfiCallerIdGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
RepositorySize + sizeof(EFI_SYSTEM_RESOURCE_ENTRY),
EsrtRepositoryNew
);
}
EXIT:
if (EsrtRepository != NULL) {
FreePool(EsrtRepository);
}
if (EsrtRepositoryNew != NULL) {
FreePool(EsrtRepositoryNew);
}
return Status;
}
/**
Delete ESRT Entry from ESRT repository.
@param[in] FwClass FwClass of Esrt entry to delete
@param[in] Attribute Esrt from Esrt private protocol or FMP instance
@retval EFI_SUCCESS Insert all entries Successfully
@retval EFI_NOT_FOUND ESRT entry with FwClass doesn't exsit
**/
EFI_STATUS
DeleteEsrtEntry(
IN EFI_GUID *FwClass,
IN UINTN Attribute
)
{
EFI_STATUS Status;
CHAR16 *VariableName;
EFI_SYSTEM_RESOURCE_ENTRY *EsrtRepository;
UINTN RepositorySize;
UINTN Index;
UINTN EsrtNum;
EsrtRepository = NULL;
//
// Get Esrt index buffer
//
if (Attribute == ESRT_FROM_FMP) {
VariableName = EFI_ESRT_FMP_VARIABLE_NAME;
} else {
VariableName = EFI_ESRT_NONFMP_VARIABLE_NAME;
}
Status = GetVariable2 (
VariableName,
&gEfiCallerIdGuid,
(VOID **) &EsrtRepository,
&RepositorySize
);
if (EFI_ERROR(Status)) {
goto EXIT;
}
if ((RepositorySize % sizeof(EFI_SYSTEM_RESOURCE_ENTRY)) != 0) {
DEBUG((EFI_D_ERROR, "Repository Corrupt. Need to rebuild Repository.\n"));
//
// Repository is corrupt. Clear Repository before insert new entry
//
Status = gRT->SetVariable(
VariableName,
&gEfiCallerIdGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
0,
EsrtRepository
);
goto EXIT;
}
Status = EFI_NOT_FOUND;
EsrtNum = RepositorySize/sizeof(EFI_SYSTEM_RESOURCE_ENTRY);
for (Index = 0; Index < EsrtNum; Index++) {
//
// Delete Esrt entry if it is found in repository
//
if (CompareGuid(FwClass, &EsrtRepository[Index].FwClass)) {
//
// If delete Esrt entry is not at the rail
//
if (Index < EsrtNum - 1) {
CopyMem(&EsrtRepository[Index], &EsrtRepository[Index + 1], (EsrtNum - Index - 1) * sizeof(EFI_SYSTEM_RESOURCE_ENTRY));
}
//
// Update New Repository
//
Status = gRT->SetVariable(
VariableName,
&gEfiCallerIdGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
(EsrtNum - 1) * sizeof(EFI_SYSTEM_RESOURCE_ENTRY),
EsrtRepository
);
break;
}
}
EXIT:
if (EsrtRepository != NULL) {
FreePool(EsrtRepository);
}
return Status;
}
/**
Update one ESRT entry in ESRT repository
@param[in] Entry Esrt entry to be set
@param[in] Attribute Esrt from Non Esrt or FMP instance
@retval EFI_SUCCESS Successfully Update a variable.
@retval EFI_NOT_FOUND The Esrt enry doesn't exist
**/
EFI_STATUS
UpdateEsrtEntry(
IN EFI_SYSTEM_RESOURCE_ENTRY *Entry,
UINTN Attribute
)
{
EFI_STATUS Status;
CHAR16 *VariableName;
EFI_SYSTEM_RESOURCE_ENTRY *EsrtRepository;
UINTN RepositorySize;
UINTN Index;
UINTN EsrtNum;
EsrtRepository = NULL;
//
// Get Esrt index buffer
//
if (Attribute == ESRT_FROM_FMP) {
VariableName = EFI_ESRT_FMP_VARIABLE_NAME;
} else {
VariableName = EFI_ESRT_NONFMP_VARIABLE_NAME;
}
Status = GetVariable2 (
VariableName,
&gEfiCallerIdGuid,
(VOID **) &EsrtRepository,
&RepositorySize
);
if (!EFI_ERROR(Status)) {
//
// if exist, update Esrt cache repository
//
if (RepositorySize % sizeof(EFI_SYSTEM_RESOURCE_ENTRY) != 0) {
DEBUG((EFI_D_ERROR, "Repository Corrupt. Need to rebuild Repository.\n"));
//
// Repository is corrupt. Clear Repository before insert new entry
//
Status = gRT->SetVariable(
VariableName,
&gEfiCallerIdGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
0,
EsrtRepository
);
Status = EFI_NOT_FOUND;
goto EXIT;
}
Status = EFI_NOT_FOUND;
EsrtNum = RepositorySize/sizeof(EFI_SYSTEM_RESOURCE_ENTRY);
for (Index = 0; Index < EsrtNum; Index++) {
//
// Update Esrt entry if it is found in repository
//
if (CompareGuid(&Entry->FwClass, &EsrtRepository[Index].FwClass)) {
CopyMem(&EsrtRepository[Index], Entry, sizeof(EFI_SYSTEM_RESOURCE_ENTRY));
//
// Update New Repository
//
Status = gRT->SetVariable(
VariableName,
&gEfiCallerIdGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
RepositorySize,
EsrtRepository
);
break;
}
}
}
EXIT:
if (EsrtRepository != NULL) {
FreePool(EsrtRepository);
}
return Status;
}
/**
Init one ESRT entry according to input FmpImageInfo (V1, V2, V3) .
@param[in, out] EsrtEntry Esrt entry to be Init
@param[in] FmpImageInfo FMP image info descriptor
@param[in] DescriptorVersion FMP Image info descriptor version
**/
VOID
SetEsrtEntryFromFmpInfo (
IN OUT EFI_SYSTEM_RESOURCE_ENTRY *EsrtEntry,
IN EFI_FIRMWARE_IMAGE_DESCRIPTOR *FmpImageInfo,
IN UINT32 DescriptorVersion
)
{
EsrtEntry->FwVersion = FmpImageInfo->Version;
EsrtEntry->FwClass = FmpImageInfo->ImageTypeId;
EsrtEntry->FwType = ESRT_FW_TYPE_DEVICEFIRMWARE;
EsrtEntry->LowestSupportedFwVersion = 0;
EsrtEntry->CapsuleFlags = 0;
EsrtEntry->LastAttemptVersion = 0;
EsrtEntry->LastAttemptStatus = LAST_ATTEMPT_STATUS_SUCCESS;
if (DescriptorVersion >= 2) {
//
// LowestSupportedImageVersion only available in FMP V2 or higher
//
EsrtEntry->LowestSupportedFwVersion = FmpImageInfo->LowestSupportedImageVersion;
}
if (DescriptorVersion >= 3) {
//
// LastAttemptVersion & LastAttemptStatus only available in FMP V3 or higher
//
EsrtEntry->LastAttemptVersion = FmpImageInfo->LastAttemptVersion;
EsrtEntry->LastAttemptStatus = FmpImageInfo->LastAttemptStatus;
}
//
// Set capsule customized flag
//
if ((FmpImageInfo->AttributesSupported & IMAGE_ATTRIBUTE_RESET_REQUIRED) != 0
&& (FmpImageInfo->AttributesSetting & IMAGE_ATTRIBUTE_RESET_REQUIRED) != 0) {
EsrtEntry->CapsuleFlags = PcdGet16(PcdSystemRebootAfterCapsuleProcessFlag);
}
}
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