mirror of https://github.com/acidanthera/audk.git
538 lines
24 KiB
C
538 lines
24 KiB
C
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/** @file
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Produce FMP instance for Microcode.
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Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "MicrocodeUpdate.h"
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//
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// MicrocodeFmp driver private data
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//
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MICROCODE_FMP_PRIVATE_DATA *mMicrocodeFmpPrivate = NULL;
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EFI_FIRMWARE_MANAGEMENT_PROTOCOL mFirmwareManagementProtocol = {
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FmpGetImageInfo,
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FmpGetImage,
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FmpSetImage,
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FmpCheckImage,
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FmpGetPackageInfo,
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FmpSetPackageInfo
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};
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/**
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Initialize Microcode Descriptor.
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@param[in] MicrocodeFmpPrivate private data structure to be initialized.
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@return EFI_SUCCESS Microcode Descriptor is initialized.
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**/
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EFI_STATUS
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InitializeMicrocodeDescriptor (
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IN MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate
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);
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/**
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Returns information about the current firmware image(s) of the device.
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This function allows a copy of the current firmware image to be created and saved.
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The saved copy could later been used, for example, in firmware image recovery or rollback.
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@param[in] This A pointer to the EFI_FIRMWARE_MANAGEMENT_PROTOCOL instance.
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@param[in, out] ImageInfoSize A pointer to the size, in bytes, of the ImageInfo buffer.
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On input, this is the size of the buffer allocated by the caller.
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On output, it is the size of the buffer returned by the firmware
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if the buffer was large enough, or the size of the buffer needed
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to contain the image(s) information if the buffer was too small.
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@param[in, out] ImageInfo A pointer to the buffer in which firmware places the current image(s)
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information. The information is an array of EFI_FIRMWARE_IMAGE_DESCRIPTORs.
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@param[out] DescriptorVersion A pointer to the location in which firmware returns the version number
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associated with the EFI_FIRMWARE_IMAGE_DESCRIPTOR.
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@param[out] DescriptorCount A pointer to the location in which firmware returns the number of
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descriptors or firmware images within this device.
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@param[out] DescriptorSize A pointer to the location in which firmware returns the size, in bytes,
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of an individual EFI_FIRMWARE_IMAGE_DESCRIPTOR.
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@param[out] PackageVersion A version number that represents all the firmware images in the device.
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The format is vendor specific and new version must have a greater value
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than the old version. If PackageVersion is not supported, the value is
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0xFFFFFFFF. A value of 0xFFFFFFFE indicates that package version comparison
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is to be performed using PackageVersionName. A value of 0xFFFFFFFD indicates
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that package version update is in progress.
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@param[out] PackageVersionName A pointer to a pointer to a null-terminated string representing the
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package version name. The buffer is allocated by this function with
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AllocatePool(), and it is the caller's responsibility to free it with a call
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to FreePool().
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@retval EFI_SUCCESS The device was successfully updated with the new image.
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@retval EFI_BUFFER_TOO_SMALL The ImageInfo buffer was too small. The current buffer size
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needed to hold the image(s) information is returned in ImageInfoSize.
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@retval EFI_INVALID_PARAMETER ImageInfoSize is NULL.
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@retval EFI_DEVICE_ERROR Valid information could not be returned. Possible corrupted image.
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**/
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EFI_STATUS
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EFIAPI
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FmpGetImageInfo (
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IN EFI_FIRMWARE_MANAGEMENT_PROTOCOL *This,
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IN OUT UINTN *ImageInfoSize,
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IN OUT EFI_FIRMWARE_IMAGE_DESCRIPTOR *ImageInfo,
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OUT UINT32 *DescriptorVersion,
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OUT UINT8 *DescriptorCount,
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OUT UINTN *DescriptorSize,
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OUT UINT32 *PackageVersion,
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OUT CHAR16 **PackageVersionName
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)
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{
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MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate;
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UINTN Index;
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MicrocodeFmpPrivate = MICROCODE_FMP_PRIVATE_DATA_FROM_FMP(This);
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if(ImageInfoSize == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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if (*ImageInfoSize < sizeof(EFI_FIRMWARE_IMAGE_DESCRIPTOR) * MicrocodeFmpPrivate->DescriptorCount) {
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*ImageInfoSize = sizeof(EFI_FIRMWARE_IMAGE_DESCRIPTOR) * MicrocodeFmpPrivate->DescriptorCount;
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return EFI_BUFFER_TOO_SMALL;
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}
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if (ImageInfo == NULL ||
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DescriptorVersion == NULL ||
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DescriptorCount == NULL ||
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DescriptorSize == NULL ||
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PackageVersion == NULL ||
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PackageVersionName == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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*ImageInfoSize = sizeof(EFI_FIRMWARE_IMAGE_DESCRIPTOR) * MicrocodeFmpPrivate->DescriptorCount;
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*DescriptorSize = sizeof(EFI_FIRMWARE_IMAGE_DESCRIPTOR);
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*DescriptorCount = MicrocodeFmpPrivate->DescriptorCount;
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*DescriptorVersion = EFI_FIRMWARE_IMAGE_DESCRIPTOR_VERSION;
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//
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// supports 1 ImageInfo descriptor
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//
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CopyMem(&ImageInfo[0], MicrocodeFmpPrivate->ImageDescriptor, sizeof(EFI_FIRMWARE_IMAGE_DESCRIPTOR) * MicrocodeFmpPrivate->DescriptorCount);
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for (Index = 0; Index < MicrocodeFmpPrivate->DescriptorCount; Index++) {
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if ((ImageInfo[Index].AttributesSetting & IMAGE_ATTRIBUTE_IN_USE) != 0) {
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ImageInfo[Index].LastAttemptVersion = MicrocodeFmpPrivate->LastAttempt.LastAttemptVersion;
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ImageInfo[Index].LastAttemptStatus = MicrocodeFmpPrivate->LastAttempt.LastAttemptStatus;
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}
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}
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//
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// package version
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//
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*PackageVersion = MicrocodeFmpPrivate->PackageVersion;
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if (MicrocodeFmpPrivate->PackageVersionName != NULL) {
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*PackageVersionName = AllocateCopyPool(StrSize(MicrocodeFmpPrivate->PackageVersionName), MicrocodeFmpPrivate->PackageVersionName);
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}
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return EFI_SUCCESS;
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}
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/**
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Retrieves a copy of the current firmware image of the device.
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This function allows a copy of the current firmware image to be created and saved.
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The saved copy could later been used, for example, in firmware image recovery or rollback.
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@param[in] This A pointer to the EFI_FIRMWARE_MANAGEMENT_PROTOCOL instance.
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@param[in] ImageIndex A unique number identifying the firmware image(s) within the device.
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The number is between 1 and DescriptorCount.
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@param[in,out] Image Points to the buffer where the current image is copied to.
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@param[in,out] ImageSize On entry, points to the size of the buffer pointed to by Image, in bytes.
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On return, points to the length of the image, in bytes.
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@retval EFI_SUCCESS The device was successfully updated with the new image.
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@retval EFI_BUFFER_TOO_SMALL The buffer specified by ImageSize is too small to hold the
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image. The current buffer size needed to hold the image is returned
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in ImageSize.
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@retval EFI_INVALID_PARAMETER The Image was NULL.
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@retval EFI_NOT_FOUND The current image is not copied to the buffer.
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@retval EFI_UNSUPPORTED The operation is not supported.
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@retval EFI_SECURITY_VIOLATIO The operation could not be performed due to an authentication failure.
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**/
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EFI_STATUS
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EFIAPI
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FmpGetImage (
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IN EFI_FIRMWARE_MANAGEMENT_PROTOCOL *This,
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IN UINT8 ImageIndex,
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IN OUT VOID *Image,
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IN OUT UINTN *ImageSize
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)
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{
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MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate;
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EFI_STATUS Status;
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if (Image == NULL || ImageSize == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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MicrocodeFmpPrivate = MICROCODE_FMP_PRIVATE_DATA_FROM_FMP(This);
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if (ImageIndex == 0 || ImageIndex > MicrocodeFmpPrivate->DescriptorCount || ImageSize == NULL || Image == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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Status = MicrocodeRead(ImageIndex, (VOID *)Image, ImageSize);
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return Status;
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}
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/**
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Updates the firmware image of the device.
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This function updates the hardware with the new firmware image.
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This function returns EFI_UNSUPPORTED if the firmware image is not updatable.
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If the firmware image is updatable, the function should perform the following minimal validations
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before proceeding to do the firmware image update.
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- Validate the image authentication if image has attribute
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IMAGE_ATTRIBUTE_AUTHENTICATION_REQUIRED. The function returns
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EFI_SECURITY_VIOLATION if the validation fails.
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- Validate the image is a supported image for this device. The function returns EFI_ABORTED if
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the image is unsupported. The function can optionally provide more detailed information on
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why the image is not a supported image.
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- Validate the data from VendorCode if not null. Image validation must be performed before
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VendorCode data validation. VendorCode data is ignored or considered invalid if image
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validation failed. The function returns EFI_ABORTED if the data is invalid.
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VendorCode enables vendor to implement vendor-specific firmware image update policy. Null if
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the caller did not specify the policy or use the default policy. As an example, vendor can implement
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a policy to allow an option to force a firmware image update when the abort reason is due to the new
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firmware image version is older than the current firmware image version or bad image checksum.
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Sensitive operations such as those wiping the entire firmware image and render the device to be
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non-functional should be encoded in the image itself rather than passed with the VendorCode.
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AbortReason enables vendor to have the option to provide a more detailed description of the abort
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reason to the caller.
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@param[in] This A pointer to the EFI_FIRMWARE_MANAGEMENT_PROTOCOL instance.
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@param[in] ImageIndex A unique number identifying the firmware image(s) within the device.
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The number is between 1 and DescriptorCount.
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@param[in] Image Points to the new image.
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@param[in] ImageSize Size of the new image in bytes.
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@param[in] VendorCode This enables vendor to implement vendor-specific firmware image update policy.
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Null indicates the caller did not specify the policy or use the default policy.
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@param[in] Progress A function used by the driver to report the progress of the firmware update.
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@param[out] AbortReason A pointer to a pointer to a null-terminated string providing more
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details for the aborted operation. The buffer is allocated by this function
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with AllocatePool(), and it is the caller's responsibility to free it with a
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call to FreePool().
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@retval EFI_SUCCESS The device was successfully updated with the new image.
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@retval EFI_ABORTED The operation is aborted.
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@retval EFI_INVALID_PARAMETER The Image was NULL.
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@retval EFI_UNSUPPORTED The operation is not supported.
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@retval EFI_SECURITY_VIOLATIO The operation could not be performed due to an authentication failure.
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**/
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EFI_STATUS
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EFIAPI
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FmpSetImage (
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IN EFI_FIRMWARE_MANAGEMENT_PROTOCOL *This,
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IN UINT8 ImageIndex,
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IN CONST VOID *Image,
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IN UINTN ImageSize,
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IN CONST VOID *VendorCode,
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IN EFI_FIRMWARE_MANAGEMENT_UPDATE_IMAGE_PROGRESS Progress,
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OUT CHAR16 **AbortReason
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)
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{
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EFI_STATUS Status;
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EFI_STATUS VarStatus;
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MICROCODE_FMP_PRIVATE_DATA *MicrocodeFmpPrivate;
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if (Image == NULL || AbortReason == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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MicrocodeFmpPrivate = MICROCODE_FMP_PRIVATE_DATA_FROM_FMP(This);
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*AbortReason = NULL;
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if (ImageIndex == 0 || ImageIndex > MicrocodeFmpPrivate->DescriptorCount || Image == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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Status = MicrocodeWrite(ImageIndex, (VOID *)Image, ImageSize, &MicrocodeFmpPrivate->LastAttempt.LastAttemptVersion, &MicrocodeFmpPrivate->LastAttempt.LastAttemptStatus, AbortReason);
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DEBUG((DEBUG_INFO, "SetImage - LastAttemp Version - 0x%x, State - 0x%x\n", MicrocodeFmpPrivate->LastAttempt.LastAttemptVersion, MicrocodeFmpPrivate->LastAttempt.LastAttemptStatus));
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VarStatus = gRT->SetVariable(
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MICROCODE_FMP_LAST_ATTEMPT_VARIABLE_NAME,
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&gEfiCallerIdGuid,
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EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
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sizeof(MicrocodeFmpPrivate->LastAttempt),
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&MicrocodeFmpPrivate->LastAttempt
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);
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DEBUG((DEBUG_INFO, "SetLastAttemp - %r\n", VarStatus));
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if (!EFI_ERROR(Status)) {
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InitializeMicrocodeDescriptor(MicrocodeFmpPrivate);
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}
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return Status;
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}
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/**
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Checks if the firmware image is valid for the device.
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This function allows firmware update application to validate the firmware image without
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invoking the SetImage() first.
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@param[in] This A pointer to the EFI_FIRMWARE_MANAGEMENT_PROTOCOL instance.
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@param[in] ImageIndex A unique number identifying the firmware image(s) within the device.
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The number is between 1 and DescriptorCount.
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@param[in] Image Points to the new image.
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@param[in] ImageSize Size of the new image in bytes.
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@param[out] ImageUpdatable Indicates if the new image is valid for update. It also provides,
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if available, additional information if the image is invalid.
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@retval EFI_SUCCESS The image was successfully checked.
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@retval EFI_INVALID_PARAMETER The Image was NULL.
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@retval EFI_UNSUPPORTED The operation is not supported.
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@retval EFI_SECURITY_VIOLATIO The operation could not be performed due to an authentication failure.
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**/
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EFI_STATUS
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EFIAPI
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FmpCheckImage (
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IN EFI_FIRMWARE_MANAGEMENT_PROTOCOL *This,
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IN UINT8 ImageIndex,
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IN CONST VOID *Image,
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IN UINTN ImageSize,
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OUT UINT32 *ImageUpdatable
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)
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{
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return EFI_UNSUPPORTED;
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}
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/**
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Returns information about the firmware package.
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This function returns package information.
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@param[in] This A pointer to the EFI_FIRMWARE_MANAGEMENT_PROTOCOL instance.
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@param[out] PackageVersion A version number that represents all the firmware images in the device.
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The format is vendor specific and new version must have a greater value
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than the old version. If PackageVersion is not supported, the value is
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0xFFFFFFFF. A value of 0xFFFFFFFE indicates that package version
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comparison is to be performed using PackageVersionName. A value of
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0xFFFFFFFD indicates that package version update is in progress.
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@param[out] PackageVersionName A pointer to a pointer to a null-terminated string representing
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the package version name. The buffer is allocated by this function with
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AllocatePool(), and it is the caller's responsibility to free it with a
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call to FreePool().
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@param[out] PackageVersionNameMaxLen The maximum length of package version name if device supports update of
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package version name. A value of 0 indicates the device does not support
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update of package version name. Length is the number of Unicode characters,
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|
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;
|
||
|
|
}
|