diff options
Diffstat (limited to 'UefiCpuPkg/Feature/Capsule/MicrocodeUpdateDxe/MicrocodeFmp.c')
| -rw-r--r-- | UefiCpuPkg/Feature/Capsule/MicrocodeUpdateDxe/MicrocodeFmp.c | 537 |
1 files changed, 537 insertions, 0 deletions
diff --git a/UefiCpuPkg/Feature/Capsule/MicrocodeUpdateDxe/MicrocodeFmp.c b/UefiCpuPkg/Feature/Capsule/MicrocodeUpdateDxe/MicrocodeFmp.c new file mode 100644 index 0000000000..df3563d879 --- /dev/null +++ b/UefiCpuPkg/Feature/Capsule/MicrocodeUpdateDxe/MicrocodeFmp.c @@ -0,0 +1,537 @@ +/** @file
+ Produce FMP instance for Microcode.
+
+ Copyright (c) 2016, 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 "MicrocodeUpdate.h"
+
+//
+// MicrocodeFmp driver private data
+//
+MICROCODE_FMP_PRIVATE_DATA *mMicrocodeFmpPrivate = NULL;
+
+EFI_FIRMWARE_MANAGEMENT_PROTOCOL mFirmwareManagementProtocol = {
+ FmpGetImageInfo,
+ FmpGetImage,
+ FmpSetImage,
+ FmpCheckImage,
+ FmpGetPackageInfo,
+ FmpSetPackageInfo
+};
+
+/**
+ Initialize Microcode Descriptor.
+
+ @param[in] MicrocodeFmpPrivate private data structure to be initialized.
+
+ @return EFI_SUCCESS Microcode Descriptor is initialized.
+**/
+EFI_STATUS
+InitializeMicrocodeDescriptor (
+ IN MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate
+ );
+
+/**
+ Returns information about the current firmware image(s) of the device.
+
+ This function allows a copy of the current firmware image to be created and saved.
+ The saved copy could later been used, for example, in firmware image recovery or rollback.
+
+ @param[in] This A pointer to the EFI_FIRMWARE_MANAGEMENT_PROTOCOL instance.
+ @param[in, out] ImageInfoSize A pointer to the size, in bytes, of the ImageInfo buffer.
+ On input, this is the size of the buffer allocated by the caller.
+ On output, it is the size of the buffer returned by the firmware
+ if the buffer was large enough, or the size of the buffer needed
+ to contain the image(s) information if the buffer was too small.
+ @param[in, out] ImageInfo A pointer to the buffer in which firmware places the current image(s)
+ information. The information is an array of EFI_FIRMWARE_IMAGE_DESCRIPTORs.
+ @param[out] DescriptorVersion A pointer to the location in which firmware returns the version number
+ associated with the EFI_FIRMWARE_IMAGE_DESCRIPTOR.
+ @param[out] DescriptorCount A pointer to the location in which firmware returns the number of
+ descriptors or firmware images within this device.
+ @param[out] DescriptorSize A pointer to the location in which firmware returns the size, in bytes,
+ of an individual EFI_FIRMWARE_IMAGE_DESCRIPTOR.
+ @param[out] PackageVersion A version number that represents all the firmware images in the device.
+ The format is vendor specific and new version must have a greater value
+ than the old version. If PackageVersion is not supported, the value is
+ 0xFFFFFFFF. A value of 0xFFFFFFFE indicates that package version comparison
+ is to be performed using PackageVersionName. A value of 0xFFFFFFFD indicates
+ that package version update is in progress.
+ @param[out] PackageVersionName A pointer to a pointer to a null-terminated string representing the
+ package version name. The buffer is allocated by this function with
+ AllocatePool(), and it is the caller's responsibility to free it with a call
+ to FreePool().
+
+ @retval EFI_SUCCESS The device was successfully updated with the new image.
+ @retval EFI_BUFFER_TOO_SMALL The ImageInfo buffer was too small. The current buffer size
+ needed to hold the image(s) information is returned in ImageInfoSize.
+ @retval EFI_INVALID_PARAMETER ImageInfoSize is NULL.
+ @retval EFI_DEVICE_ERROR Valid information could not be returned. Possible corrupted image.
+
+**/
+EFI_STATUS
+EFIAPI
+FmpGetImageInfo (
+ IN EFI_FIRMWARE_MANAGEMENT_PROTOCOL *This,
+ IN OUT UINTN *ImageInfoSize,
+ IN OUT EFI_FIRMWARE_IMAGE_DESCRIPTOR *ImageInfo,
+ OUT UINT32 *DescriptorVersion,
+ OUT UINT8 *DescriptorCount,
+ OUT UINTN *DescriptorSize,
+ OUT UINT32 *PackageVersion,
+ OUT CHAR16 **PackageVersionName
+ )
+{
+ MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate;
+ UINTN Index;
+
+ MicrocodeFmpPrivate = MICROCODE_FMP_PRIVATE_DATA_FROM_FMP(This);
+
+ if(ImageInfoSize == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (*ImageInfoSize < sizeof(EFI_FIRMWARE_IMAGE_DESCRIPTOR) * MicrocodeFmpPrivate->DescriptorCount) {
+ *ImageInfoSize = sizeof(EFI_FIRMWARE_IMAGE_DESCRIPTOR) * MicrocodeFmpPrivate->DescriptorCount;
+ return EFI_BUFFER_TOO_SMALL;
+ }
+
+ if (ImageInfo == NULL ||
+ DescriptorVersion == NULL ||
+ DescriptorCount == NULL ||
+ DescriptorSize == NULL ||
+ PackageVersion == NULL ||
+ PackageVersionName == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ *ImageInfoSize = sizeof(EFI_FIRMWARE_IMAGE_DESCRIPTOR) * MicrocodeFmpPrivate->DescriptorCount;
+ *DescriptorSize = sizeof(EFI_FIRMWARE_IMAGE_DESCRIPTOR);
+ *DescriptorCount = MicrocodeFmpPrivate->DescriptorCount;
+ *DescriptorVersion = EFI_FIRMWARE_IMAGE_DESCRIPTOR_VERSION;
+
+ //
+ // supports 1 ImageInfo descriptor
+ //
+ CopyMem(&ImageInfo[0], MicrocodeFmpPrivate->ImageDescriptor, sizeof(EFI_FIRMWARE_IMAGE_DESCRIPTOR) * MicrocodeFmpPrivate->DescriptorCount);
+ for (Index = 0; Index < MicrocodeFmpPrivate->DescriptorCount; Index++) {
+ if ((ImageInfo[Index].AttributesSetting & IMAGE_ATTRIBUTE_IN_USE) != 0) {
+ ImageInfo[Index].LastAttemptVersion = MicrocodeFmpPrivate->LastAttempt.LastAttemptVersion;
+ ImageInfo[Index].LastAttemptStatus = MicrocodeFmpPrivate->LastAttempt.LastAttemptStatus;
+ }
+ }
+
+ //
+ // package version
+ //
+ *PackageVersion = MicrocodeFmpPrivate->PackageVersion;
+ if (MicrocodeFmpPrivate->PackageVersionName != NULL) {
+ *PackageVersionName = AllocateCopyPool(StrSize(MicrocodeFmpPrivate->PackageVersionName), MicrocodeFmpPrivate->PackageVersionName);
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Retrieves a copy of the current firmware image of the device.
+
+ This function allows a copy of the current firmware image to be created and saved.
+ The saved copy could later been used, for example, in firmware image recovery or rollback.
+
+ @param[in] This A pointer to the EFI_FIRMWARE_MANAGEMENT_PROTOCOL instance.
+ @param[in] ImageIndex A unique number identifying the firmware image(s) within the device.
+ The number is between 1 and DescriptorCount.
+ @param[in,out] Image Points to the buffer where the current image is copied to.
+ @param[in,out] ImageSize On entry, points to the size of the buffer pointed to by Image, in bytes.
+ On return, points to the length of the image, in bytes.
+
+ @retval EFI_SUCCESS The device was successfully updated with the new image.
+ @retval EFI_BUFFER_TOO_SMALL The buffer specified by ImageSize is too small to hold the
+ image. The current buffer size needed to hold the image is returned
+ in ImageSize.
+ @retval EFI_INVALID_PARAMETER The Image was NULL.
+ @retval EFI_NOT_FOUND The current image is not copied to the buffer.
+ @retval EFI_UNSUPPORTED The operation is not supported.
+ @retval EFI_SECURITY_VIOLATIO The operation could not be performed due to an authentication failure.
+
+**/
+EFI_STATUS
+EFIAPI
+FmpGetImage (
+ IN EFI_FIRMWARE_MANAGEMENT_PROTOCOL *This,
+ IN UINT8 ImageIndex,
+ IN OUT VOID *Image,
+ IN OUT UINTN *ImageSize
+ )
+{
+ MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate;
+ EFI_STATUS Status;
+
+ if (Image == NULL || ImageSize == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ MicrocodeFmpPrivate = MICROCODE_FMP_PRIVATE_DATA_FROM_FMP(This);
+
+ if (ImageIndex == 0 || ImageIndex > MicrocodeFmpPrivate->DescriptorCount || ImageSize == NULL || Image == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Status = MicrocodeRead(ImageIndex, (VOID *)Image, ImageSize);
+ return Status;
+}
+
+/**
+ Updates the firmware image of the device.
+
+ This function updates the hardware with the new firmware image.
+ This function returns EFI_UNSUPPORTED if the firmware image is not updatable.
+ If the firmware image is updatable, the function should perform the following minimal validations
+ before proceeding to do the firmware image update.
+ - Validate the image authentication if image has attribute
+ IMAGE_ATTRIBUTE_AUTHENTICATION_REQUIRED. The function returns
+ EFI_SECURITY_VIOLATION if the validation fails.
+ - Validate the image is a supported image for this device. The function returns EFI_ABORTED if
+ the image is unsupported. The function can optionally provide more detailed information on
+ why the image is not a supported image.
+ - Validate the data from VendorCode if not null. Image validation must be performed before
+ VendorCode data validation. VendorCode data is ignored or considered invalid if image
+ validation failed. The function returns EFI_ABORTED if the data is invalid.
+
+ VendorCode enables vendor to implement vendor-specific firmware image update policy. Null if
+ the caller did not specify the policy or use the default policy. As an example, vendor can implement
+ a policy to allow an option to force a firmware image update when the abort reason is due to the new
+ firmware image version is older than the current firmware image version or bad image checksum.
+ Sensitive operations such as those wiping the entire firmware image and render the device to be
+ non-functional should be encoded in the image itself rather than passed with the VendorCode.
+ AbortReason enables vendor to have the option to provide a more detailed description of the abort
+ reason to the caller.
+
+ @param[in] This A pointer to the EFI_FIRMWARE_MANAGEMENT_PROTOCOL instance.
+ @param[in] ImageIndex A unique number identifying the firmware image(s) within the device.
+ The number is between 1 and DescriptorCount.
+ @param[in] Image Points to the new image.
+ @param[in] ImageSize Size of the new image in bytes.
+ @param[in] VendorCode This enables vendor to implement vendor-specific firmware image update policy.
+ Null indicates the caller did not specify the policy or use the default policy.
+ @param[in] Progress A function used by the driver to report the progress of the firmware update.
+ @param[out] AbortReason A pointer to a pointer to a null-terminated string providing more
+ details for the aborted operation. The buffer is allocated by this function
+ with AllocatePool(), and it is the caller's responsibility to free it with a
+ call to FreePool().
+
+ @retval EFI_SUCCESS The device was successfully updated with the new image.
+ @retval EFI_ABORTED The operation is aborted.
+ @retval EFI_INVALID_PARAMETER The Image was NULL.
+ @retval EFI_UNSUPPORTED The operation is not supported.
+ @retval EFI_SECURITY_VIOLATIO The operation could not be performed due to an authentication failure.
+
+**/
+EFI_STATUS
+EFIAPI
+FmpSetImage (
+ IN EFI_FIRMWARE_MANAGEMENT_PROTOCOL *This,
+ IN UINT8 ImageIndex,
+ IN CONST VOID *Image,
+ IN UINTN ImageSize,
+ IN CONST VOID *VendorCode,
+ IN EFI_FIRMWARE_MANAGEMENT_UPDATE_IMAGE_PROGRESS Progress,
+ OUT CHAR16 **AbortReason
+ )
+{
+ EFI_STATUS Status;
+ EFI_STATUS VarStatus;
+ MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate;
+
+ if (Image == NULL || AbortReason == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ MicrocodeFmpPrivate = MICROCODE_FMP_PRIVATE_DATA_FROM_FMP(This);
+ *AbortReason = NULL;
+
+ if (ImageIndex == 0 || ImageIndex > MicrocodeFmpPrivate->DescriptorCount || Image == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Status = MicrocodeWrite(ImageIndex, (VOID *)Image, ImageSize, &MicrocodeFmpPrivate->LastAttempt.LastAttemptVersion, &MicrocodeFmpPrivate->LastAttempt.LastAttemptStatus, AbortReason);
+ DEBUG((DEBUG_INFO, "SetImage - LastAttemp Version - 0x%x, State - 0x%x\n", MicrocodeFmpPrivate->LastAttempt.LastAttemptVersion, MicrocodeFmpPrivate->LastAttempt.LastAttemptStatus));
+ VarStatus = gRT->SetVariable(
+ MICROCODE_FMP_LAST_ATTEMPT_VARIABLE_NAME,
+ &gEfiCallerIdGuid,
+ EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
+ sizeof(MicrocodeFmpPrivate->LastAttempt),
+ &MicrocodeFmpPrivate->LastAttempt
+ );
+ DEBUG((DEBUG_INFO, "SetLastAttemp - %r\n", VarStatus));
+
+ if (!EFI_ERROR(Status)) {
+ InitializeMicrocodeDescriptor(MicrocodeFmpPrivate);
+ }
+
+ return Status;
+}
+
+/**
+ Checks if the firmware image is valid for the device.
+
+ This function allows firmware update application to validate the firmware image without
+ invoking the SetImage() first.
+
+ @param[in] This A pointer to the EFI_FIRMWARE_MANAGEMENT_PROTOCOL instance.
+ @param[in] ImageIndex A unique number identifying the firmware image(s) within the device.
+ The number is between 1 and DescriptorCount.
+ @param[in] Image Points to the new image.
+ @param[in] ImageSize Size of the new image in bytes.
+ @param[out] ImageUpdatable Indicates if the new image is valid for update. It also provides,
+ if available, additional information if the image is invalid.
+
+ @retval EFI_SUCCESS The image was successfully checked.
+ @retval EFI_INVALID_PARAMETER The Image was NULL.
+ @retval EFI_UNSUPPORTED The operation is not supported.
+ @retval EFI_SECURITY_VIOLATIO The operation could not be performed due to an authentication failure.
+
+**/
+EFI_STATUS
+EFIAPI
+FmpCheckImage (
+ IN EFI_FIRMWARE_MANAGEMENT_PROTOCOL *This,
+ IN UINT8 ImageIndex,
+ IN CONST VOID *Image,
+ IN UINTN ImageSize,
+ OUT UINT32 *ImageUpdatable
+ )
+{
+ return EFI_UNSUPPORTED;
+}
+
+/**
+ Returns information about the firmware package.
+
+ This function returns package information.
+
+ @param[in] This A pointer to the EFI_FIRMWARE_MANAGEMENT_PROTOCOL instance.
+ @param[out] PackageVersion A version number that represents all the firmware images in the device.
+ The format is vendor specific and new version must have a greater value
+ than the old version. If PackageVersion is not supported, the value is
+ 0xFFFFFFFF. A value of 0xFFFFFFFE indicates that package version
+ comparison is to be performed using PackageVersionName. A value of
+ 0xFFFFFFFD indicates that package version update is in progress.
+ @param[out] PackageVersionName A pointer to a pointer to a null-terminated string representing
+ the package version name. The buffer is allocated by this function with
+ AllocatePool(), and it is the caller's responsibility to free it with a
+ call to FreePool().
+ @param[out] PackageVersionNameMaxLen The maximum length of package version name if device supports update of
+ package version name. A value of 0 indicates the device does not support
+ update of package version name. Length is the number of Unicode characters,
+ including the terminating null character.
+ @param[out] AttributesSupported Package attributes that are supported by this device. See 'Package Attribute
+ Definitions' for possible returned values of this parameter. A value of 1
+ indicates the attribute is supported and the current setting value is
+ indicated in AttributesSetting. A value of 0 indicates the attribute is not
+ supported and the current setting value in AttributesSetting is meaningless.
+ @param[out] AttributesSetting Package attributes. See 'Package Attribute Definitions' for possible returned
+ values of this parameter
+
+ @retval EFI_SUCCESS The package information was successfully returned.
+ @retval EFI_UNSUPPORTED The operation is not supported.
+
+**/
+EFI_STATUS
+EFIAPI
+FmpGetPackageInfo (
+ IN EFI_FIRMWARE_MANAGEMENT_PROTOCOL *This,
+ OUT UINT32 *PackageVersion,
+ OUT CHAR16 **PackageVersionName,
+ OUT UINT32 *PackageVersionNameMaxLen,
+ OUT UINT64 *AttributesSupported,
+ OUT UINT64 *AttributesSetting
+ )
+{
+ return EFI_UNSUPPORTED;
+}
+
+/**
+ Updates information about the firmware package.
+
+ This function updates package information.
+ This function returns EFI_UNSUPPORTED if the package information is not updatable.
+ VendorCode enables vendor to implement vendor-specific package information update policy.
+ Null if the caller did not specify this policy or use the default policy.
+
+ @param[in] This A pointer to the EFI_FIRMWARE_MANAGEMENT_PROTOCOL instance.
+ @param[in] Image Points to the authentication image.
+ Null if authentication is not required.
+ @param[in] ImageSize Size of the authentication image in bytes.
+ 0 if authentication is not required.
+ @param[in] VendorCode This enables vendor to implement vendor-specific firmware
+ image update policy.
+ Null indicates the caller did not specify this policy or use
+ the default policy.
+ @param[in] PackageVersion The new package version.
+ @param[in] PackageVersionName A pointer to the new null-terminated Unicode string representing
+ the package version name.
+ The string length is equal to or less than the value returned in
+ PackageVersionNameMaxLen.
+
+ @retval EFI_SUCCESS The device was successfully updated with the new package
+ information.
+ @retval EFI_INVALID_PARAMETER The PackageVersionName length is longer than the value
+ returned in PackageVersionNameMaxLen.
+ @retval EFI_UNSUPPORTED The operation is not supported.
+ @retval EFI_SECURITY_VIOLATIO The operation could not be performed due to an authentication failure.
+
+**/
+EFI_STATUS
+EFIAPI
+FmpSetPackageInfo (
+ IN EFI_FIRMWARE_MANAGEMENT_PROTOCOL *This,
+ IN CONST VOID *Image,
+ IN UINTN ImageSize,
+ IN CONST VOID *VendorCode,
+ IN UINT32 PackageVersion,
+ IN CONST CHAR16 *PackageVersionName
+ )
+{
+ return EFI_UNSUPPORTED;
+}
+
+/**
+ Initialize Microcode Descriptor.
+
+ @param[in] MicrocodeFmpPrivate private data structure to be initialized.
+
+ @return EFI_SUCCESS Microcode Descriptor is initialized.
+**/
+EFI_STATUS
+InitializeMicrocodeDescriptor (
+ IN MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate
+ )
+{
+ UINT8 CurrentMicrocodeCount;
+
+ CurrentMicrocodeCount = (UINT8)GetMicrocodeInfo(NULL, 0);
+
+ if (CurrentMicrocodeCount > MicrocodeFmpPrivate->DescriptorCount) {
+ if (MicrocodeFmpPrivate->ImageDescriptor != NULL) {
+ FreePool(MicrocodeFmpPrivate->ImageDescriptor);
+ MicrocodeFmpPrivate->ImageDescriptor = NULL;
+ }
+ } else {
+ ZeroMem(MicrocodeFmpPrivate->ImageDescriptor, MicrocodeFmpPrivate->DescriptorCount * sizeof(EFI_FIRMWARE_IMAGE_DESCRIPTOR));
+ }
+
+ MicrocodeFmpPrivate->DescriptorCount = CurrentMicrocodeCount;
+
+ if (MicrocodeFmpPrivate->ImageDescriptor == NULL) {
+ MicrocodeFmpPrivate->ImageDescriptor = AllocateZeroPool(MicrocodeFmpPrivate->DescriptorCount * sizeof(EFI_FIRMWARE_IMAGE_DESCRIPTOR));
+ if (MicrocodeFmpPrivate->ImageDescriptor == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+ }
+
+ CurrentMicrocodeCount = (UINT8)GetMicrocodeInfo(MicrocodeFmpPrivate->ImageDescriptor, MicrocodeFmpPrivate->DescriptorCount);
+ ASSERT(CurrentMicrocodeCount == MicrocodeFmpPrivate->DescriptorCount);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Initialize MicrocodeFmpDriver private data structure.
+
+ @param[in] MicrocodeFmpPrivate private data structure to be initialized.
+
+ @return EFI_SUCCESS private data is initialized.
+**/
+EFI_STATUS
+InitializePrivateData (
+ IN MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate
+ )
+{
+ EFI_STATUS Status;
+ EFI_STATUS VarStatus;
+ UINTN VarSize;
+
+ MicrocodeFmpPrivate->Signature = MICROCODE_FMP_PRIVATE_DATA_SIGNATURE;
+ MicrocodeFmpPrivate->Handle = NULL;
+ CopyMem(&MicrocodeFmpPrivate->Fmp, &mFirmwareManagementProtocol, sizeof(EFI_FIRMWARE_MANAGEMENT_PROTOCOL));
+
+ MicrocodeFmpPrivate->PackageVersion = 0x1;
+ MicrocodeFmpPrivate->PackageVersionName = L"Microcode";
+
+ MicrocodeFmpPrivate->LastAttempt.LastAttemptVersion = 0x0;
+ MicrocodeFmpPrivate->LastAttempt.LastAttemptStatus = 0x0;
+ VarSize = sizeof(MicrocodeFmpPrivate->LastAttempt);
+ VarStatus = gRT->GetVariable(
+ MICROCODE_FMP_LAST_ATTEMPT_VARIABLE_NAME,
+ &gEfiCallerIdGuid,
+ NULL,
+ &VarSize,
+ &MicrocodeFmpPrivate->LastAttempt
+ );
+ DEBUG((DEBUG_INFO, "GetLastAttemp - %r\n", VarStatus));
+ DEBUG((DEBUG_INFO, "GetLastAttemp Version - 0x%x, State - 0x%x\n", MicrocodeFmpPrivate->LastAttempt.LastAttemptVersion, MicrocodeFmpPrivate->LastAttempt.LastAttemptStatus));
+
+ Status = InitializeMicrocodeDescriptor(MicrocodeFmpPrivate);
+
+ return Status;
+}
+
+/**
+ Microcode FMP module entrypoint
+
+ @param[in] ImageHandle The firmware allocated handle for the EFI image.
+ @param[in] SystemTable A pointer to the EFI System Table.
+
+ @return EFI_SUCCESS Microcode FMP module is initialized.
+**/
+EFI_STATUS
+EFIAPI
+MicrocodeFmpMain (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ //
+ // Initialize MicrocodeFmpPrivateData
+ //
+ mMicrocodeFmpPrivate = AllocateZeroPool (sizeof(MICROCODE_FMP_PRIVATE_DATA));
+ if (mMicrocodeFmpPrivate == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Status = InitializePrivateData(mMicrocodeFmpPrivate);
+ if (EFI_ERROR(Status)) {
+ FreePool(mMicrocodeFmpPrivate);
+ mMicrocodeFmpPrivate = NULL;
+ return Status;
+ }
+
+ //
+ // Install FMP protocol.
+ //
+ Status = gBS->InstallProtocolInterface (
+ &mMicrocodeFmpPrivate->Handle,
+ &gEfiFirmwareManagementProtocolGuid,
+ EFI_NATIVE_INTERFACE,
+ &mMicrocodeFmpPrivate->Fmp
+ );
+ if (EFI_ERROR (Status)) {
+ FreePool(mMicrocodeFmpPrivate);
+ mMicrocodeFmpPrivate = NULL;
+ return Status;
+ }
+
+ return Status;
+}
|