/*
* Copyright (c) 2020 by UNISOC Technology(Shanghai), Inc.  ALL RIGHTS RESERVED.
*
* These coded instructions, statements, and computer programs are the
* copyrighted works and confidential proprietary information of
* UNISOC Technology(Shanghai), Inc. They may not be modified, copied, reproduced,
* distributed, or disclosed to third parties in any manner, medium, or form,
* in whole or in part, without the prior written consent of UNISOC Technology(Shanghai), Inc.
*/

#include <stdint.h>

#ifndef _UNISOC_BOOT_IMAGE_H_
#define _UNISOC_BOOT_IMAGE_H_


#define UNISOC_BOOT_MAGIC "UNISOCBOOTIMAGE!"
#define UNISOC_BOOT_MAGIC_SIZE 16

struct unioc_boot_img_hdr
{
    uint8_t magic[UNISOC_BOOT_MAGIC_SIZE];

    uint32_t kernel_size;  /* size in bytes */
    uint32_t kernel_addr;  /* physical load addr */

    uint32_t ramdisk_size; /* size in bytes */
    uint32_t ramdisk_addr; /* physical load addr */

    uint32_t page_size;    /* flash page size we assume */

    uint32_t dt_size; /* device tree in bytes */
    uint32_t unused;    /* future expansion: should be 0 */

} __attribute__((packed));

/*
** +-----------------+
** | header          | 1 page
** +-----------------+
** | kernel          | n pages
** +-----------------+
** | ramdisk         | m pages
** +-----------------+
** | device tree     | p pages
** +-----------------+
**
** n = (kernel_size + page_size - 1) / page_size
** m = (ramdisk_size + page_size - 1) / page_size
** p = (dt_size + page_size - 1) / page_size
**
** 0. all entities are page_size aligned in flash
** 1. kernel and ramdisk are required (size != 0)
** 2. load each element (kernel, ramdisk, second) at
**    the specified physical address (kernel_addr, etc)
*/

#endif