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48d9325303
Add support for version 2 of the FWU metadata structure. The top level structure is kept separate through a config symbol. Most of the fields, primarily used for providing information on updatable images are common across the two versions. Also change a few existing structure members used for image identification to reflect the fact that these are GUIDs, and not UUIDs. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Tested-by: Michal Simek <michal.simek@amd.com>
128 lines
4.2 KiB
C
128 lines
4.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (c) 2022, Linaro Limited
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*/
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#if !defined _FWU_MDATA_H_
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#define _FWU_MDATA_H_
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#include <linux/compiler_attributes.h>
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#include <efi.h>
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/**
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* struct fwu_image_bank_info - firmware image information
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* @image_guid: Guid value of the image in this bank
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* @accepted: Acceptance status of the image
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* @reserved: Reserved
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*
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* The structure contains image specific fields which are
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* used to identify the image and to specify the image's
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* acceptance status
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*/
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struct fwu_image_bank_info {
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efi_guid_t image_guid;
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uint32_t accepted;
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uint32_t reserved;
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} __packed;
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/**
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* struct fwu_image_entry - information for a particular type of image
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* @image_type_guid: Guid value for identifying the image type
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* @location_guid: Guid of the storage volume where the image is located
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* @img_bank_info: Array containing properties of images
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*
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* This structure contains information on various types of updatable
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* firmware images. Each image type then contains an array of image
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* information per bank.
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*/
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struct fwu_image_entry {
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efi_guid_t image_type_guid;
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efi_guid_t location_guid;
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struct fwu_image_bank_info img_bank_info[CONFIG_FWU_NUM_BANKS];
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} __packed;
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/**
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* struct fwu_fw_store_desc - FWU updatable image information
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* @num_banks: Number of firmware banks
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* @num_images: Number of images per bank
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* @img_entry_size: The size of the img_entry array
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* @bank_info_entry_size: The size of the img_bank_info array
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* @img_entry: Array of image entries each giving information on a image
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*
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* This image descriptor structure contains information on the number of
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* updatable banks and images per bank. It also gives the total sizes of
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* the fwu_image_entry and fwu_image_bank_info arrays. This structure is
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* only present in version 2 of the metadata structure.
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*/
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struct fwu_fw_store_desc {
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uint8_t num_banks;
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uint8_t reserved;
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uint16_t num_images;
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uint16_t img_entry_size;
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uint16_t bank_info_entry_size;
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struct fwu_image_entry img_entry[CONFIG_FWU_NUM_IMAGES_PER_BANK];
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} __packed;
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#if defined(CONFIG_FWU_MDATA_V1)
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/**
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* struct fwu_mdata - FWU metadata structure for multi-bank updates
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* @crc32: crc32 value for the FWU metadata
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* @version: FWU metadata version
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* @active_index: Index of the bank currently used for booting images
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* @previous_active_inde: Index of the bank used before the current bank
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* being used for booting
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* @img_entry: Array of information on various firmware images that can
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* be updated
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*
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* This structure is used to store all the needed information for performing
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* multi bank updates on the platform. This contains info on the bank being
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* used to boot along with the information needed for identification of
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* individual images
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*/
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struct fwu_mdata {
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uint32_t crc32;
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uint32_t version;
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uint32_t active_index;
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uint32_t previous_active_index;
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struct fwu_image_entry img_entry[CONFIG_FWU_NUM_IMAGES_PER_BANK];
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} __packed;
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#else /* CONFIG_FWU_MDATA_V1 */
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/**
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* struct fwu_mdata - FWU metadata structure for multi-bank updates
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* @crc32: crc32 value for the FWU metadata
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* @version: FWU metadata version
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* @active_index: Index of the bank currently used for booting images
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* @previous_active_inde: Index of the bank used before the current bank
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* being used for booting
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* @metadata_size: Size of the entire metadata structure, including the
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* image descriptors
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* @desc_offset: The offset from the start of this structure where the
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* image descriptor structure starts. 0 if absent
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* @bank_state: State of each bank, valid, invalid or accepted
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* @fw_desc: The structure describing the FWU updatable images
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*
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* This is the top level structure used to store all information for performing
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* multi bank updates on the platform. This contains info on the bank being
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* used to boot along with the information on state of individual banks.
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*/
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struct fwu_mdata {
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uint32_t crc32;
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uint32_t version;
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uint32_t active_index;
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uint32_t previous_active_index;
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uint32_t metadata_size;
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uint16_t desc_offset;
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uint16_t reserved1;
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uint8_t bank_state[4];
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uint32_t reserved2;
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// struct fwu_fw_store_desc fw_desc;
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} __packed;
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#endif /* CONFIG_FWU_MDATA_V1 */
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#endif /* _FWU_MDATA_H_ */
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