/*
 * Copyright (c) 2018-2019 Atmosphère-NX
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef EXOSPHERE_PACKAGE2_H
#define EXOSPHERE_PACKAGE2_H

/* This is code responsible for validating a package2. Actual file reading is done by bootloader. */

#include "utils.h"
#include "bootconfig.h"
#include "exocfg.h"
#include "memory_map.h"

/* Physaddr 0x40002EF8 */
static inline uintptr_t get_nx_bootloader_mailbox_base(unsigned int targetfw) {
    return MMIO_GET_DEVICE_ADDRESS(MMIO_DEVID_NXBOOTLOADER_MAILBOX) + ((targetfw >= ATMOSPHERE_TARGET_FIRMWARE_700) ? (0x000ull) : (0xE00ull));
}

#define MAILBOX_NX_BOOTLOADER_BASE(targetfw) (get_nx_bootloader_mailbox_base(targetfw))

#define MAILBOX_NX_SECMON_BOOT_TIME(targetfw)       MAKE_REG32(MAILBOX_NX_BOOTLOADER_BASE(targetfw) + 0x08ull)

#define MAILBOX_NX_BOOTLOADER_SETUP_STATE(targetfw) MAKE_REG32(MAILBOX_NX_BOOTLOADER_BASE(targetfw) + 0xF8ull)

#define NX_BOOTLOADER_STATE_INIT 0
#define NX_BOOTLOADER_STATE_MOVED_BOOTCONFIG 1

#define NX_BOOTLOADER_STATE_LOADED_PACKAGE2 2
#define NX_BOOTLOADER_STATE_FINISHED 3

#define NX_BOOTLOADER_STATE_DRAM_INITIALIZED_4X 2
#define NX_BOOTLOADER_STATE_LOADED_PACKAGE2_4X 3
#define NX_BOOTLOADER_STATE_FINISHED_4X 4

/* Physaddr 0x40002EFC */
#define MAILBOX_NX_BOOTLOADER_IS_SECMON_AWAKE(targetfw) MAKE_REG32(MAILBOX_NX_BOOTLOADER_BASE(targetfw) + 0xFCULL)

#define MAILBOX_NX_BOOTLOADER_BOOT_REASON(targetfw) (MAILBOX_NX_BOOTLOADER_BASE(targetfw) + 0x10ULL)

#define NX_BOOTLOADER_BOOTCONFIG_POINTER ((void *)(0x4003D000ull))
#define NX_BOOTLOADER_BOOTCONFIG_POINTER_6X ((void *)(0x4003F800ull))

#define NX_BOOTLOADER_PACKAGE2_LOAD_ADDRESS ((void *)(0xA9800000ull))

#define DRAM_BASE_PHYSICAL (0x80000000ull)

#define MAGIC_PK21 (0x31324B50)
#define PACKAGE2_SIZE_MAX 0x7FC000
#define PACKAGE2_SECTION_MAX 0x3

#define PACKAGE2_MINVER_THEORETICAL 0x0
#define PACKAGE2_MAXVER_100 0x2
#define PACKAGE2_MAXVER_200 0x3
#define PACKAGE2_MAXVER_300 0x4
#define PACKAGE2_MAXVER_302 0x5
#define PACKAGE2_MAXVER_400_410 0x6
#define PACKAGE2_MAXVER_500_510 0x7
#define PACKAGE2_MAXVER_600_610 0x8
#define PACKAGE2_MAXVER_620 0x9
#define PACKAGE2_MAXVER_700_CURRENT 0xA

#define PACKAGE2_MINVER_100 0x3
#define PACKAGE2_MINVER_200 0x4
#define PACKAGE2_MINVER_300 0x5
#define PACKAGE2_MINVER_302 0x6
#define PACKAGE2_MINVER_400_410 0x7
#define PACKAGE2_MINVER_500_510 0x8
#define PACKAGE2_MINVER_600_610 0x9
#define PACKAGE2_MINVER_620 0xA
#define PACKAGE2_MINVER_700_CURRENT 0xB

typedef struct {
    union {
        uint8_t ctr[0x10];
        uint32_t ctr_dwords[0x4];
    };
    uint8_t section_ctrs[4][0x10];
    uint32_t magic;
    uint32_t entrypoint;
    uint32_t _0x58;
    uint8_t version_max; /* Must be > TZ value. */
    uint8_t version_min; /* Must be < TZ value. */
    uint16_t _0x5E;
    uint32_t section_sizes[4];
    uint32_t section_offsets[4];
    uint8_t section_hashes[4][0x20];
} package2_meta_t;

typedef struct {
    uint8_t signature[0x100];
    union {
        package2_meta_t metadata;
        uint8_t encrypted_header[0x100];
    };
    uint8_t data[];
} package2_header_t;

void load_package2(coldboot_crt0_reloc_list_t *reloc_list);

#endif