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|
/** @file
Esrt management implementation.
Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#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;
}
/**
Return if this FMP is a system FMP or a device FMP, based upon FmpImageInfo.
@param[in] FmpImageInfo A pointer to EFI_FIRMWARE_IMAGE_DESCRIPTOR
@return TRUE It is a system FMP.
@return FALSE It is a device FMP.
**/
BOOLEAN
IsSystemFmp (
IN EFI_FIRMWARE_IMAGE_DESCRIPTOR *FmpImageInfo
)
{
GUID *Guid;
UINTN Count;
UINTN Index;
Guid = PcdGetPtr(PcdSystemFmpCapsuleImageTypeIdGuid);
Count = PcdGetSize(PcdSystemFmpCapsuleImageTypeIdGuid)/sizeof(GUID);
for (Index = 0; Index < Count; Index++, Guid++) {
if (CompareGuid(&FmpImageInfo->ImageTypeId, Guid)) {
return TRUE;
}
}
return FALSE;
}
/**
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;
if (IsSystemFmp(FmpImageInfo)) {
EsrtEntry->FwType = ESRT_FW_TYPE_SYSTEMFIRMWARE;
} else {
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);
}
}
|
