58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
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/*
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* Copyright (c) 2020 by UNISOC Technology(Shanghai), Inc. ALL RIGHTS RESERVED.
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*
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* These coded instructions, statements, and computer programs are the
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* copyrighted works and confidential proprietary information of
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* UNISOC Technology(Shanghai), Inc. They may not be modified, copied, reproduced,
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* distributed, or disclosed to third parties in any manner, medium, or form,
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* in whole or in part, without the prior written consent of UNISOC Technology(Shanghai), Inc.
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*/
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#include <stdint.h>
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#ifndef _UNISOC_BOOT_IMAGE_H_
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#define _UNISOC_BOOT_IMAGE_H_
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#define UNISOC_BOOT_MAGIC "UNISOCBOOTIMAGE!"
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#define UNISOC_BOOT_MAGIC_SIZE 16
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struct unioc_boot_img_hdr
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{
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uint8_t magic[UNISOC_BOOT_MAGIC_SIZE];
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uint32_t kernel_size; /* size in bytes */
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uint32_t kernel_addr; /* physical load addr */
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uint32_t ramdisk_size; /* size in bytes */
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uint32_t ramdisk_addr; /* physical load addr */
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uint32_t page_size; /* flash page size we assume */
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uint32_t dt_size; /* device tree in bytes */
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uint32_t unused; /* future expansion: should be 0 */
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} __attribute__((packed));
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/*
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** +-----------------+
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** | header | 1 page
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** +-----------------+
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** | kernel | n pages
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** +-----------------+
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** | ramdisk | m pages
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** +-----------------+
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** | device tree | p pages
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** +-----------------+
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**
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** n = (kernel_size + page_size - 1) / page_size
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** m = (ramdisk_size + page_size - 1) / page_size
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** p = (dt_size + page_size - 1) / page_size
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**
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** 0. all entities are page_size aligned in flash
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** 1. kernel and ramdisk are required (size != 0)
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** 2. load each element (kernel, ramdisk, second) at
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** the specified physical address (kernel_addr, etc)
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*/
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#endif
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