#pragma once

#include "common.h"

/*
 * Firmware chunk header.
 */
#define FW_MAGIC		0x7a07fbd6

struct fw_header {
    uint32_t magic;		/* Magic number */
    uint16_t type;		/* Content type */
    uint16_t flags;		/* Content flags */
    uint32_t len;		/* Content length (excluding header) */
    uint32_t addr;		/* Address or similar */
};

enum fw_data_type {
    FDT_END,			/* End of stream */
    FDT_DATA,			/* FPGA firmware ata to be flashed */
    FDT_TARGET,			/* Subsystem string (must match) */
    FDT_NOTE,			/* Version: XXXXX or similar */
    FDT_ESP_OTA,		/* ESP32 OTA image */
    FDT_FPGA_INIT		/* FPGA bitstream for update */
};
enum fw_data_flags {
    FDF_OPTIONAL     = 0x0001	/* Ignore if chunk data type unknown */
};

/*
 * Additional error codes
 */
#define FWUPDATE_ERR_ERASE_FAILED	(-7)
#define FWUPDATE_ERR_PROGRAM_FAILED	(-8)
#define FWUPDATE_ERR_WRITE_PROTECT	(-9)
#define FWUPDATE_ERR_NOT_READY		(-10)
#define FWUPDATE_ERR_DETECT		(-11)
#define FWUPDATE_ERR_DEVICE_MISMATCH	(-12)
#define FWUPDATE_ERR_IN_PROGRESS	(-13)

extern_c int firmware_update(read_func_t read_func, token_t token);
extern_c esp_err_t esp_update(read_func_t read_func, token_t token, size_t size);