FmpDevicePkg: Add FmpDependency library class and BASE instance
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2696 This library provides services to evaluate Fmp capsule dependency expression, validate dependency expression and get dependency from firmware image. Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Liming Gao <liming.gao@intel.com> Cc: Sean Brogan <sean.brogan@microsoft.com> Signed-off-by: Wei6 Xu <wei6.xu@intel.com> Reviewed-by: Sean Brogan <sean.brogan@microsoft.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
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FmpDevicePkg/Include/Library/FmpDependencyLib.h
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89
FmpDevicePkg/Include/Library/FmpDependencyLib.h
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/** @file
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Fmp Capsule Dependency support functions for Firmware Management Protocol based
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firmware updates.
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Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __FMP_DEPENDENCY_LIB__
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#define __FMP_DEPENDENCY_LIB__
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#include <PiDxe.h>
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#include <Protocol/FirmwareManagement.h>
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//
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// Data struct to store FMP ImageType and version for dependency check.
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//
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typedef struct {
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EFI_GUID ImageTypeId;
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UINT32 Version;
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} FMP_DEPEX_CHECK_VERSION_DATA;
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/**
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Validate the dependency expression and output its size.
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@param[in] Dependencies Pointer to the EFI_FIRMWARE_IMAGE_DEP.
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@param[in] MaxDepexSize Max size of the dependency.
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@param[out] DepexSize Size of dependency.
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@retval TRUE The capsule is valid.
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@retval FALSE The capsule is invalid.
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**/
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BOOLEAN
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EFIAPI
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ValidateDependency (
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IN EFI_FIRMWARE_IMAGE_DEP *Dependencies,
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IN UINTN MaxDepexSize,
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OUT UINT32 *DepexSize
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);
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/**
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Get dependency from firmware image.
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@param[in] Image Points to the firmware image.
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@param[in] ImageSize Size, in bytes, of the firmware image.
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@param[out] DepexSize Size, in bytes, of the dependency.
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@retval The pointer to dependency.
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@retval Null
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**/
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EFI_FIRMWARE_IMAGE_DEP*
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EFIAPI
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GetImageDependency (
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IN EFI_FIRMWARE_IMAGE_AUTHENTICATION *Image,
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IN UINTN ImageSize,
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OUT UINT32 *DepexSize
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);
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/**
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Evaluate the dependencies. The caller must search all the Fmp instances and
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gather their versions into FmpVersions parameter. If there is PUSH_GUID opcode
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in dependency expression with no FmpVersions provided, the dependency will
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evaluate to FALSE.
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@param[in] Dependencies Dependency expressions.
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@param[in] DependenciesSize Size of Dependency expressions.
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@param[in] FmpVersions Array of Fmp ImageTypeId and version. This
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parameter is optional and can be set to NULL.
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@param[in] FmpVersionsCount Element count of the array. When FmpVersions
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is NULL, FmpVersionsCount must be 0.
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@retval TRUE Dependency expressions evaluate to TRUE.
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@retval FALSE Dependency expressions evaluate to FALSE.
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**/
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BOOLEAN
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EFIAPI
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EvaluateDependency (
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IN EFI_FIRMWARE_IMAGE_DEP *Dependencies,
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IN UINTN DependenciesSize,
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IN FMP_DEPEX_CHECK_VERSION_DATA *FmpVersions OPTIONAL,
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IN UINTN FmpVersionsCount
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);
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#endif
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