/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2020 Rockchip Electronics Co., Ltd
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*/
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#ifndef _SPL_RESOURCE_IMG_H_
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#define _SPL_RESOURCE_IMG_H_
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#define RESOURCE_MAGIC "RSCE"
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#define RESOURCE_MAGIC_SIZE 4
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#define RESOURCE_VERSION 0
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#define CONTENT_VERSION 0
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#define ENTRY_TAG "ENTR"
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#define ENTRY_TAG_SIZE 4
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#define MAX_FILE_NAME_LEN 220
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#define MAX_HASH_LEN 32
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#define DEFAULT_DTB_FILE "rk-kernel.dtb"
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/*
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* resource image structure
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* ----------------------------------------------
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* | |
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* | header (1 block) |
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* | |
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* ---------------------------------------------|
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* | | |
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* | entry0 (1 block) | |
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* | | |
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* ------------------------ |
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* | | |
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* | entry1 (1 block) | contents (n blocks) |
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* | | |
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* ------------------------ |
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* | ...... | |
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* ------------------------ |
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* | | |
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* | entryn (1 block) | |
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* | | |
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* ----------------------------------------------
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* | |
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* | file0 (x blocks) |
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* | |
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* ----------------------------------------------
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* | |
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* | file1 (y blocks) |
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* | |
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* ----------------------------------------------
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* | ...... |
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* |---------------------------------------------
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* | |
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* | filen (z blocks) |
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* | |
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* ----------------------------------------------
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*/
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/**
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* struct resource_image_header
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*
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* @magic: should be "RSCE"
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* @version: resource image version, current is 0
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* @c_version: content version, current is 0
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* @blks: the size of the header ( 1 block = 512 bytes)
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* @c_offset: contents offset(by block) in the image
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* @e_blks: the size(by block) of the entry in the contents
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* @e_num: numbers of the entries.
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*/
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struct resource_img_hdr {
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char magic[4];
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uint16_t version;
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uint16_t c_version;
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uint8_t blks;
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uint8_t c_offset;
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uint8_t e_blks;
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uint32_t e_nums;
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};
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struct resource_entry {
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char tag[4];
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char name[MAX_FILE_NAME_LEN];
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char hash[MAX_HASH_LEN];
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uint32_t hash_size;
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uint32_t f_offset;
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uint32_t f_size;
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};
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int spl_resource_image_check_header(const struct resource_img_hdr *hdr);
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struct resource_entry *
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spl_resource_image_get_dtb_entry(const struct resource_img_hdr *hdr);
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#endif
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