main.c File Reference

Application to generate firmware for USB Host Mass Storage Bootloader.

Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.

#include <asf.h>
#include <string.h>
#include "conf_usb_host.h"
#include "conf_bootloader.h"
#include "main.h"
#include "aesa.h"

Macros
#define	MSC_DELAY_SOF_COUNT   100

Functions
static void	aes_encrypt (uint32_t *decrypted_data, uint32_t size)
	AES Decryption routine. More...
static void	console_init (void)
	Initializes the console output. More...
static void	firmware_gen_system_init ()
	Initializes the device for the bootloader. More...
static void	generate_crc (void)
	Generate the CRC value for the firmware. More...
static bool	generate_firmware (void)
	Function to generate the final firmware. More...
static void	init_aes ()
	AES Initialization routine. More...
int	main (void)
	Main function. More...
void	main_usb_connection_event (uhc_device_t *dev, bool b_present)
	Notify that a USB device has been connected or disconnected. More...
void	main_usb_sof_event (void)
	Notify that a SOF has been sent (each 1 ms) More...

Variables
COMPILER_WORD_ALIGNED volatile uint32_t	aes_output [FLASH_BUFFER_SIZE/4]
COMPILER_WORD_ALIGNED volatile uint8_t	buffer [FLASH_BUFFER_SIZE]
static crccu_dscr_type_t	crc_dscr
static DIR	file_dir
static FIL	file_object1
static FIL	file_object2
static uint32_t	firmware_crc = 0
static FATFS	fs
struct aes_config	g_aes_cfg
struct aes_dev_inst	g_aes_inst
static char	input_file_name []
static volatile bool	lun_connected = false
static char	output_file_name []
static volatile uint32_t	sof_count = 0

#define MSC_DELAY_SOF_COUNT   100

Referenced by main().

static void aes_encrypt ( uint32_t *  input_data, uint32_t  size  )

static

AES Decryption routine.

References aes_read_output_data(), aes_read_status(), aes_write_input_data(), and g_aes_inst.

Referenced by generate_firmware().

static void console_init ( void  )

static

Initializes the console output.

References sam_usart_opt_t::baudrate, sysclk_enable_peripheral_clock(), sysclk_get_peripheral_bus_hz(), usart_enable_tx(), and usart_init_rs232().

Referenced by firmware_gen_system_init().

static void firmware_gen_system_init ( void  )

static

Initializes the device for the bootloader.

References board_init(), console_init(), cpu_irq_enable, sleepmgr_init(), sysclk_init(), and uhc_start().

Referenced by main().

static void generate_crc ( void  )

static

Generate the CRC value for the firmware.

References APP_CRC_POLYNOMIAL_TYPE, buffer, crccu_configure_descriptor(), crccu_configure_mode(), crccu_enable_dma(), crccu_get_dma_status(), crccu_read_crc_value(), crccu_reset(), CRCCU_TR_CTRL_IEN_DISABLE, CRCCU_TR_CTRL_TRWIDTH_BYTE, f_close(), f_open(), f_read(), FA_OPEN_EXISTING, FA_READ, firmware_crc, input_file_name, sysclk_disable_peripheral_clock(), and sysclk_enable_peripheral_clock().

Referenced by main().

static bool generate_firmware ( void  )

static

Function to generate the final firmware.

References aes_encrypt(), APP_BINARY_OFFSET, APP_CRC_SIZE, APP_SIGNATURE, APP_SIGNATURE_SIZE, buffer, f_close(), f_lseek(), f_open(), f_read(), f_sync(), f_write(), FA_CREATE_ALWAYS, FA_OPEN_EXISTING, FA_READ, FA_WRITE, firmware_crc, FR_OK, init_aes(), input_file_name, and output_file_name.

Referenced by main().

static void init_aes ( void  )

static

AES Initialization routine.

References AES_CBC_MODE, AES_CFB_SIZE_128, aes_dev_inst::aes_cfg, AES_COUNTERMEASURE_TYPE_ALL, aes_enable(), AES_ENCRYPTION, aes_get_config_defaults(), aes_init(), AES_KEY_SIZE_128, AES_MANUAL_MODE, aes_set_config(), aes_set_new_message(), aes_write_initvector(), aes_write_key(), aes_config::cfb_size, aes_config::countermeasure_mask, aes_config::dma_mode, aes_config::encrypt_mode, g_aes_cfg, g_aes_inst, aes_config::key_size, and aes_config::opmode.

Referenced by generate_firmware().

int main

(

void

)

Main function.

Execution starts here.

References APP_BINARY_OFFSET, APP_MAX_SIZE, buffer, cpu_irq_disable, f_close(), f_lseek(), f_mount(), f_open(), f_opendir(), f_sync(), f_write(), FA_OPEN_EXISTING, FA_READ, FA_WRITE, firmware_gen_system_init(), FR_OK, FIL::fsize, generate_crc(), generate_firmware(), input_file_name, lun_connected, MSC_DELAY_SOF_COUNT, output_file_name, sof_count, uhc_stop(), and uhi_msc_mem_get_lun().

void main_usb_connection_event	(	uhc_device_t *	dev,
		bool	b_present
	)

Notify that a USB device has been connected or disconnected.

Parameters

dev	Pointer on USB device information
b_present	true, if the device has been connected

References lun_connected, sof_count, and UNUSED.

void main_usb_sof_event

(

void

)

Notify that a SOF has been sent (each 1 ms)

References sof_count.

COMPILER_WORD_ALIGNED volatile uint32_t aes_output[FLASH_BUFFER_SIZE/4]

COMPILER_WORD_ALIGNED volatile uint8_t buffer[FLASH_BUFFER_SIZE]

Referenced by generate_crc(), generate_firmware(), and main().

crccu_dscr_type_t crc_dscr

static

DIR file_dir

static

FIL file_object1

static

FIL file_object2

static

uint32_t firmware_crc = 0

static

Referenced by generate_crc(), and generate_firmware().

FATFS fs

static

Referenced by chk_mounted(), and f_mount().

struct aes_config g_aes_cfg

Referenced by init_aes().

struct aes_dev_inst g_aes_inst

Referenced by aes_encrypt(), and init_aes().

char input_file_name[]

static

Initial value:

= {
    FIRMWARE_IN_FILE_NAME
}

Referenced by generate_crc(), generate_firmware(), and main().

volatile bool lun_connected = false

static

Referenced by main(), and main_usb_connection_event().

char output_file_name[]

static

Initial value:

= {
    FIRMWARE_OUT_FILE_NAME
}

Referenced by generate_firmware(), and main().

volatile uint32_t sof_count = 0

static

Referenced by main(), main_usb_connection_event(), and main_usb_sof_event().