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stk500boot.c
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/****************************************************************************
Title: STK500v2 compatible bootloader
Modified for Wiring board ATMega128-16MHz
Author: Peter Fleury <[email protected]> http://jump.to/fleury
Compiler: avr-gcc 3.4.5 or 4.1 / avr-libc 1.4.3
Hardware: All AVRs with bootloader support, tested with ATmega8
License: GNU General Public License
Modified: Worapoht Kornkaewwattanakul <[email protected]> http://www.avride.com
Date: 17 October 2007
Update: 1st, 29 Dec 2007 : Enable CMD_SPI_MULTI but ignore unused command by return 0x00 byte response..
Compiler: WINAVR20060421
Description: add timeout feature like previous Wiring bootloader
DESCRIPTION:
This program allows an AVR with bootloader capabilities to
read/write its own Flash/EEprom. To enter Programming mode
an input pin is checked. If this pin is pulled low, programming mode
is entered. If not, normal execution is done from $0000
"reset" vector in Application area.
Size fits into a 1024 word bootloader section
when compiled with avr-gcc 4.1
(direct replace on Wiring Board without fuse setting changed)
USAGE:
- Set AVR MCU type and clock-frequency (F_CPU) in the Makefile.
- Set baud rate below (AVRISP only works with 115200 bps)
- compile/link the bootloader with the supplied Makefile
- program the "Boot Flash section size" (BOOTSZ fuses),
for boot-size 1024 words: program BOOTSZ01
- enable the BOOT Reset Vector (program BOOTRST)
- Upload the hex file to the AVR using any ISP programmer
- Program Boot Lock Mode 3 (program BootLock 11 and BootLock 12 lock bits) // (leave them)
- Reset your AVR while keeping PROG_PIN pulled low // (for enter bootloader by switch)
- Start AVRISP Programmer (AVRStudio/Tools/Program AVR)
- AVRISP will detect the bootloader
- Program your application FLASH file and optional EEPROM file using AVRISP
Note:
Erasing the device without flashing, through AVRISP GUI button "Erase Device"
is not implemented, due to AVRStudio limitations.
Flash is always erased before programming.
AVRdude:
Please uncomment #define REMOVE_CMD_SPI_MULTI when using AVRdude.
Comment #define REMOVE_PROGRAM_LOCK_BIT_SUPPORT to reduce code size
Read Fuse Bits and Read/Write Lock Bits is not supported
NOTES:
Based on Atmel Application Note AVR109 - Self-programming
Based on Atmel Application Note AVR068 - STK500v2 Protocol
LICENSE:
Copyright (C) 2006 Peter Fleury
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
any later version.
This program is distributed in the hope that 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.
*****************************************************************************/
//************************************************************************
//* Edit History
//************************************************************************
//* Jul 7, 2010 <MLS> = Mark Sproul [email protected]
//* Jul 7, 2010 <MLS> Working on mega2560. No Auto-restart
//* Jul 7, 2010 <MLS> Switched to 8K bytes (4K words) so that we have room for the monitor
//* Jul 8, 2010 <MLS> Found older version of source that had auto restart, put that code back in
//* Jul 8, 2010 <MLS> Adding monitor code
//* Jul 11, 2010 <MLS> Added blinking LED while waiting for download to start
//* Jul 11, 2010 <MLS> Added EEPROM test
//* Jul 29, 2010 <MLS> Added recchar_timeout for timing out on bootloading
//* Aug 23, 2010 <MLS> Added support for atmega2561
//* Aug 26, 2010 <MLS> Removed support for BOOT_BY_SWITCH
//* Sep 8, 2010 <MLS> Added support for atmega16
//* Nov 9, 2010 <MLS> Issue 392:Fixed bug that 3 !!! in code would cause it to jump to monitor
//* Jun 24, 2011 <MLS> Removed analogRead (was not used)
//* Dec 29, 2011 <MLS> Issue 181: added watch dog timmer support
//* Dec 29, 2011 <MLS> Issue 505: bootloader is comparing the seqNum to 1 or the current sequence
//* Jan 1, 2012 <MLS> Issue 543: CMD_CHIP_ERASE_ISP now returns STATUS_CMD_FAILED instead of STATUS_CMD_OK
//* Jan 1, 2012 <MLS> Issue 543: Write EEPROM now does something (NOT TESTED)
//* Jan 1, 2012 <MLS> Issue 544: stk500v2 bootloader doesn't support reading fuses
//************************************************************************
//************************************************************************
//* these are used to test issues
//* http://code.google.com/p/arduino/issues/detail?id=505
//* Reported by mark.stubbs, Mar 14, 2011
//* The STK500V2 bootloader is comparing the seqNum to 1 or the current sequence
//* (IE: Requiring the sequence to be 1 or match seqNum before continuing).
//* The correct behavior is for the STK500V2 to accept the PC's sequence number, and echo it back for the reply message.
#define _FIX_ISSUE_505_
//************************************************************************
//* Issue 181: added watch dog timmer support
#define _FIX_ISSUE_181_
#include <inttypes.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/boot.h>
#include <avr/pgmspace.h>
#include <util/delay.h>
#include <avr/eeprom.h>
#include <avr/common.h>
#include <stdlib.h>
#include "command.h"
#include <string.h>
// #include "aes.h"
const unsigned char iv [] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f };
const unsigned char key[] = {0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c};
#undef ENABLE_MONITOR
/*
#if defined(_MEGA_BOARD_) || defined(_BOARD_AMBER128_) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
|| defined(__AVR_ATmega2561__) || defined(__AVR_ATmega1284P__) || defined(ENABLE_MONITOR)
#undef ENABLE_MONITOR
#define ENABLE_MONITOR
static void RunMonitor(void);
#endif
*/
#ifndef EEWE
#define EEWE 1
#endif
#ifndef EEMWE
#define EEMWE 2
#endif
//#define _DEBUG_SERIAL_
//#define _DEBUG_WITH_LEDS_
/*
* Uncomment the following lines to save code space
*/
#define REMOVE_PROGRAM_LOCK_BIT_SUPPORT // disable program lock bits
#define REMOVE_BOOTLOADER_LED // no LED to show active bootloader
#define REMOVE_CMD_SPI_MULTI // disable processing of SPI_MULTI commands, Remark this line for AVRDUDE <Worapoht>
//
//************************************************************************
//* LED on pin "PROGLED_PIN" on port "PROGLED_PORT"
//* indicates that bootloader is active
//* PG2 -> LED on Wiring board
//************************************************************************
//#define BLINK_LED_WHILE_WAITING
#ifdef _MEGA_BOARD_
#define PROGLED_PORT PORTB
#define PROGLED_DDR DDRB
#define PROGLED_PIN PINB7
#elif defined( _BOARD_AMBER128_ )
//* this is for the amber 128 http://www.soc-robotics.com/
//* onbarod led is PORTE4
#define PROGLED_PORT PORTD
#define PROGLED_DDR DDRD
#define PROGLED_PIN PINE7
#elif defined( _CEREBOTPLUS_BOARD_ ) || defined(_CEREBOT_II_BOARD_)
//* this is for the Cerebot 2560 board and the Cerebot-ii
//* onbarod leds are on PORTE4-7
#define PROGLED_PORT PORTE
#define PROGLED_DDR DDRE
#define PROGLED_PIN PINE7
#elif defined( _PENGUINO_ )
//* this is for the Penguino
//* onbarod led is PORTE4
#define PROGLED_PORT PORTC
#define PROGLED_DDR DDRC
#define PROGLED_PIN PINC6
#elif defined( _ANDROID_2561_ ) || defined( __AVR_ATmega2561__ )
//* this is for the Boston Android 2561
//* onbarod led is PORTE4
#define PROGLED_PORT PORTA
#define PROGLED_DDR DDRA
#define PROGLED_PIN PINA3
#elif defined( _BOARD_MEGA16 )
//* onbarod led is PORTA7
#define PROGLED_PORT PORTA
#define PROGLED_DDR DDRA
#define PROGLED_PIN PINA7
#define UART_BAUDRATE_DOUBLE_SPEED 0
#elif defined( _BOARD_BAHBOT_ )
//* dosent have an onboard LED but this is what will probably be added to this port
#define PROGLED_PORT PORTB
#define PROGLED_DDR DDRB
#define PROGLED_PIN PINB0
#elif defined( _BOARD_ROBOTX_ )
#define PROGLED_PORT PORTB
#define PROGLED_DDR DDRB
#define PROGLED_PIN PINB6
#elif defined( _BOARD_CUSTOM1284_BLINK_B0_ )
#define PROGLED_PORT PORTB
#define PROGLED_DDR DDRB
#define PROGLED_PIN PINB0
#elif defined( _BOARD_CUSTOM1284_ )
#define PROGLED_PORT PORTD
#define PROGLED_DDR DDRD
#define PROGLED_PIN PIND5
#elif defined( _AVRLIP_ )
#define PROGLED_PORT PORTB
#define PROGLED_DDR DDRB
#define PROGLED_PIN PINB5
#elif defined( _BOARD_STK500_ )
#define PROGLED_PORT PORTA
#define PROGLED_DDR DDRA
#define PROGLED_PIN PINA7
#elif defined( _BOARD_STK502_ )
#define PROGLED_PORT PORTB
#define PROGLED_DDR DDRB
#define PROGLED_PIN PINB5
#elif defined( _BOARD_STK525_ )
#define PROGLED_PORT PORTB
#define PROGLED_DDR DDRB
#define PROGLED_PIN PINB7
#else
#define PROGLED_PORT PORTG
#define PROGLED_DDR DDRG
#define PROGLED_PIN PING2
#endif
/*
* define CPU frequency in Mhz here if not defined in Makefile
*/
#ifndef F_CPU
#define F_CPU 16000000UL
#endif
#define _BLINK_LOOP_COUNT_ (F_CPU / 2250)
/*
* UART Baudrate, AVRStudio AVRISP only accepts 115200 bps
*/
#ifndef BAUDRATE
#define BAUDRATE 115200
#endif
/*
* Enable (1) or disable (0) USART double speed operation
*/
#ifndef UART_BAUDRATE_DOUBLE_SPEED
#if defined (__AVR_ATmega32__)
#define UART_BAUDRATE_DOUBLE_SPEED 0
#else
#define UART_BAUDRATE_DOUBLE_SPEED 1
#endif
#endif
/*
* HW and SW version, reported to AVRISP, must match version of AVRStudio
*/
#define CONFIG_PARAM_BUILD_NUMBER_LOW 0
#define CONFIG_PARAM_BUILD_NUMBER_HIGH 0
#define CONFIG_PARAM_HW_VER 0x0F
#define CONFIG_PARAM_SW_MAJOR 2
#define CONFIG_PARAM_SW_MINOR 0x0A
/*
* Calculate the address where the bootloader starts from FLASHEND and BOOTSIZE
* (adjust BOOTSIZE below and BOOTLOADER_ADDRESS in Makefile if you want to change the size of the bootloader)
*/
//#define BOOTSIZE 1024
#if FLASHEND > 0x0F000
#define BOOTSIZE 8192
#else
#define BOOTSIZE 2048
#endif
#define APP_END (FLASHEND -(2*BOOTSIZE) + 1)
/*
* Signature bytes are not available in avr-gcc io_xxx.h
*/
#if defined (__AVR_ATmega8__)
#define SIGNATURE_BYTES 0x1E9307
#elif defined (__AVR_ATmega16__)
#define SIGNATURE_BYTES 0x1E9403
#elif defined (__AVR_ATmega32__)
#define SIGNATURE_BYTES 0x1E9502
#elif defined (__AVR_ATmega8515__)
#define SIGNATURE_BYTES 0x1E9306
#elif defined (__AVR_ATmega8535__)
#define SIGNATURE_BYTES 0x1E9308
#elif defined (__AVR_ATmega162__)
#define SIGNATURE_BYTES 0x1E9404
#elif defined (__AVR_ATmega128__)
#define SIGNATURE_BYTES 0x1E9702
#elif defined (__AVR_ATmega1280__)
#define SIGNATURE_BYTES 0x1E9703
#elif defined (__AVR_ATmega2560__)
#define SIGNATURE_BYTES 0x1E9801
#elif defined (__AVR_ATmega2561__)
#define SIGNATURE_BYTES 0x1e9802
#elif defined (__AVR_ATmega1284P__)
#define SIGNATURE_BYTES 0x1e9705
#elif defined (__AVR_ATmega640__)
#define SIGNATURE_BYTES 0x1e9608
#elif defined (__AVR_ATmega64__)
#define SIGNATURE_BYTES 0x1E9602
#elif defined (__AVR_ATmega169__)
#define SIGNATURE_BYTES 0x1e9405
#elif defined (__AVR_AT90USB1287__)
#define SIGNATURE_BYTES 0x1e9782
#else
#error "no signature definition for MCU available"
#endif
#if defined(_BOARD_ROBOTX_) || defined(__AVR_AT90USB1287__) || defined(__AVR_AT90USB1286__)
#define UART_BAUD_RATE_LOW UBRR1L
#define UART_STATUS_REG UCSR1A
#define UART_CONTROL_REG UCSR1B
#define UART_ENABLE_TRANSMITTER TXEN1
#define UART_ENABLE_RECEIVER RXEN1
#define UART_TRANSMIT_COMPLETE TXC1
#define UART_RECEIVE_COMPLETE RXC1
#define UART_DATA_REG UDR1
#define UART_DOUBLE_SPEED U2X1
#elif defined(__AVR_ATmega8__) || defined(__AVR_ATmega16__) || defined(__AVR_ATmega32__) \
|| defined(__AVR_ATmega8515__) || defined(__AVR_ATmega8535__)
/* ATMega8 with one USART */
#define UART_BAUD_RATE_LOW UBRRL
#define UART_STATUS_REG UCSRA
#define UART_CONTROL_REG UCSRB
#define UART_ENABLE_TRANSMITTER TXEN
#define UART_ENABLE_RECEIVER RXEN
#define UART_TRANSMIT_COMPLETE TXC
#define UART_RECEIVE_COMPLETE RXC
#define UART_DATA_REG UDR
#define UART_DOUBLE_SPEED U2X
#elif defined(__AVR_ATmega64__) || defined(__AVR_ATmega128__) || defined(__AVR_ATmega162__) \
|| defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__) || defined(__AVR_ATmega2561__)
/* ATMega with two USART, use UART0 */
#define UART_BAUD_RATE_LOW UBRR0L
#define UART_STATUS_REG UCSR0A
#define UART_CONTROL_REG UCSR0B
#define UART_ENABLE_TRANSMITTER TXEN0
#define UART_ENABLE_RECEIVER RXEN0
#define UART_TRANSMIT_COMPLETE TXC0
#define UART_RECEIVE_COMPLETE RXC0
#define UART_DATA_REG UDR0
#define UART_DOUBLE_SPEED U2X0
#elif defined(UBRR0L) && defined(UCSR0A) && defined(TXEN0)
/* ATMega with two USART, use UART0 */
#define UART_BAUD_RATE_LOW UBRR0L
#define UART_STATUS_REG UCSR0A
#define UART_CONTROL_REG UCSR0B
#define UART_ENABLE_TRANSMITTER TXEN0
#define UART_ENABLE_RECEIVER RXEN0
#define UART_TRANSMIT_COMPLETE TXC0
#define UART_RECEIVE_COMPLETE RXC0
#define UART_DATA_REG UDR0
#define UART_DOUBLE_SPEED U2X0
#elif defined(UBRRL) && defined(UCSRA) && defined(UCSRB) && defined(TXEN) && defined(RXEN)
//* catch all
#define UART_BAUD_RATE_LOW UBRRL
#define UART_STATUS_REG UCSRA
#define UART_CONTROL_REG UCSRB
#define UART_ENABLE_TRANSMITTER TXEN
#define UART_ENABLE_RECEIVER RXEN
#define UART_TRANSMIT_COMPLETE TXC
#define UART_RECEIVE_COMPLETE RXC
#define UART_DATA_REG UDR
#define UART_DOUBLE_SPEED U2X
#else
#error "no UART definition for MCU available"
#endif
/*
* Macro to calculate UBBR from XTAL and baudrate
*/
#if defined(__AVR_ATmega32__) && UART_BAUDRATE_DOUBLE_SPEED
#define UART_BAUD_SELECT(baudRate,xtalCpu) ((xtalCpu / 4 / baudRate - 1) / 2)
#elif defined(__AVR_ATmega32__)
#define UART_BAUD_SELECT(baudRate,xtalCpu) ((xtalCpu / 8 / baudRate - 1) / 2)
#elif UART_BAUDRATE_DOUBLE_SPEED
#define UART_BAUD_SELECT(baudRate,xtalCpu) (((float)(xtalCpu))/(((float)(baudRate))*8.0)-1.0+0.5)
#else
#define UART_BAUD_SELECT(baudRate,xtalCpu) (((float)(xtalCpu))/(((float)(baudRate))*16.0)-1.0+0.5)
#endif
/*
* States used in the receive state machine
*/
#define ST_START 0
#define ST_GET_SEQ_NUM 1
#define ST_MSG_SIZE_1 2
#define ST_MSG_SIZE_2 3
#define ST_GET_TOKEN 4
#define ST_GET_DATA 5
#define ST_GET_CHECK 6
#define ST_PROCESS 7
/*
* States used in the encrypted command packet stage.
*/
#define SOTA_PACKET_RETRIEVE_START 0
#define SOTA_PACKET_RETRIEVE_SIZE 1
#define SOTA_PACKET_RETRIEVE_PROCESSING 2
#define SOTA_PACKET_RETRIEVE_FINISHED 3
/*
* use 16bit address variable for ATmegas with <= 64K flash
*/
#if defined(RAMPZ)
typedef uint32_t address_t;
#else
typedef uint16_t address_t;
#endif
/*
* function prototypes
*/
static void sendchar(char c);
void PrintDecInt(int theNumber, int digitCnt)
{
int theChar;
int myNumber;
myNumber = theNumber;
if ((myNumber > 100) || (digitCnt >= 3))
{
theChar = 0x30 + myNumber / 100;
sendchar(theChar );
}
if ((myNumber > 10) || (digitCnt >= 2))
{
theChar = 0x30 + ((myNumber % 100) / 10 );
sendchar(theChar );
}
theChar = 0x30 + (myNumber % 10);
sendchar(theChar );
}
static unsigned char recchar(void);
//Burak
#define Nb 4
// The number of 32 bit words in a key.
#define Nk 4
// The number of rounds in AES Cipher.
#define Nr 10
#define BLOCKLEN 16
// jcallan@github points out that declaring Multiply as a function
// reduces code size considerably with the Keil ARM compiler.
// See this link for more information: https://github.com/kokke/tiny-AES128-C/pull/3
#ifndef MULTIPLY_AS_A_FUNCTION
#define MULTIPLY_AS_A_FUNCTION 0
#endif
/*****************************************************************************/
/* Private variables: */
/*****************************************************************************/
// state - array holding the intermediate results during decryption.
typedef unsigned char state_t[4][4];
static state_t* state;
// The array that stores the round keys.
static unsigned char RoundKey[176];
// The Key input to the AES Program
static const unsigned char* Key;
// #if defined(CBC) && CBC
// Initial Vector used only for CBC mode
static unsigned char* Iv;
// #endif
// The lookup-tables are marked const so they can be placed in read-only storage instead of RAM
// The numbers below can be computed dynamically trading ROM for RAM -
// This can be useful in (embedded) bootloader applications, where ROM is often limited.
static const unsigned char sbox[256] = {
//0 1 2 3 4 5 6 7 8 9 A B C D E F
0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 };
static const unsigned char rsbox[256] =
{ 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,
0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,
0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,
0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,
0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,
0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,
0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,
0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,
0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,
0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,
0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d };
// The round constant word array, Rcon[i], contains the values given by
// x to th e power (i-1) being powers of x (x is denoted as {02}) in the field GF(2^8)
// Note that i starts at 1, not 0).
static const unsigned char Rcon[255] = {
0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a,
0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39,
0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a,
0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8,
0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef,
0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc,
0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b,
0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3,
0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94,
0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20,
0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35,
0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f,
0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04,
0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63,
0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd,
0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb };
/*****************************************************************************/
/* Private functions: */
/*****************************************************************************/
static unsigned char getSBoxValue(unsigned char num)
{
return sbox[num];
}
static unsigned char getSBoxInvert(unsigned char num)
{
return rsbox[num];
}
static void XorWithIv(unsigned char* buf)
{
unsigned char i;
for(i = 0; i < 16; ++i)
{
buf[i] ^= Iv[i];
}
}
// This function produces Nb(Nr+1) round keys. The round keys are used in each round to decrypt the states.
static void KeyExpansion(void)
{
uint32_t i, j, k;
unsigned char tempa[4]; // Used for the column/row operations
// The first round key is the key itself.
for(i = 0; i < Nk; ++i)
{
RoundKey[(i * 4) + 0] = Key[(i * 4) + 0];
RoundKey[(i * 4) + 1] = Key[(i * 4) + 1];
RoundKey[(i * 4) + 2] = Key[(i * 4) + 2];
RoundKey[(i * 4) + 3] = Key[(i * 4) + 3];
}
// All other round keys are found from the previous round keys.
for(; (i < (Nb * (Nr + 1))); ++i)
{
for(j = 0; j < 4; ++j)
{
tempa[j]=RoundKey[(i-1) * 4 + j];
}
if (i % Nk == 0)
{
// This function rotates the 4 bytes in a word to the left once.
// [a0,a1,a2,a3] becomes [a1,a2,a3,a0]
// Function RotWord()
{
k = tempa[0];
tempa[0] = tempa[1];
tempa[1] = tempa[2];
tempa[2] = tempa[3];
tempa[3] = k;
}
// SubWord() is a function that takes a four-byte input word and
// applies the S-box to each of the four bytes to produce an output word.
// Function Subword()
{
tempa[0] = getSBoxValue(tempa[0]);
tempa[1] = getSBoxValue(tempa[1]);
tempa[2] = getSBoxValue(tempa[2]);
tempa[3] = getSBoxValue(tempa[3]);
}
tempa[0] = tempa[0] ^ Rcon[i/Nk];
}
else if (Nk > 6 && i % Nk == 4)
{
// Function Subword()
{
tempa[0] = getSBoxValue(tempa[0]);
tempa[1] = getSBoxValue(tempa[1]);
tempa[2] = getSBoxValue(tempa[2]);
tempa[3] = getSBoxValue(tempa[3]);
}
}
// uint32_t brk = 0xFF ^ tempa[0];
// static unsigned char burakim[1024];
// for(uint8_t i =0; i<1024;i++)
// burakim[i] = 0xFF;
// RoundKey[i * 4 + 0] = RoundKey[(i - Nk) * 4 + 0];
// sendchar(0x91);
RoundKey[i * 4 + 0] = RoundKey[(i - Nk) * 4 + 0] ^ tempa[0];
// sendchar(0x92);
RoundKey[i * 4 + 1] = RoundKey[(i - Nk) * 4 + 1] ^ tempa[1];
// sendchar(0x93);
RoundKey[i * 4 + 2] = RoundKey[(i - Nk) * 4 + 2] ^ tempa[2];
// sendchar(0x94);
RoundKey[i * 4 + 3] = RoundKey[(i - Nk) * 4 + 3] ^ tempa[3];
// sendchar(0x95);
}
}
// This function adds the round key to state.
// The round key is added to the state by an XOR function.
static void AddRoundKey(unsigned char round)
{
unsigned char i,j;
for(i=0;i<4;++i)
{
for(j = 0; j < 4; ++j)
{
(*state)[i][j] ^= RoundKey[round * Nb * 4 + i * Nb + j];
}
}
}
// The SubBytes Function Substitutes the values in the
// state matrix with values in an S-box.
static void SubBytes(void)
{
unsigned char i, j;
for(i = 0; i < 4; ++i)
{
for(j = 0; j < 4; ++j)
{
(*state)[j][i] = getSBoxValue((*state)[j][i]);
}
}
}
// The ShiftRows() function shifts the rows in the state to the left.
// Each row is shifted with different offset.
// Offset = Row number. So the first row is not shifted.
static void ShiftRows(void)
{
unsigned char temp;
// Rotate first row 1 columns to left
temp = (*state)[0][1];
(*state)[0][1] = (*state)[1][1];
(*state)[1][1] = (*state)[2][1];
(*state)[2][1] = (*state)[3][1];
(*state)[3][1] = temp;
// Rotate second row 2 columns to left
temp = (*state)[0][2];
(*state)[0][2] = (*state)[2][2];
(*state)[2][2] = temp;
temp = (*state)[1][2];
(*state)[1][2] = (*state)[3][2];
(*state)[3][2] = temp;
// Rotate third row 3 columns to left
temp = (*state)[0][3];
(*state)[0][3] = (*state)[3][3];
(*state)[3][3] = (*state)[2][3];
(*state)[2][3] = (*state)[1][3];
(*state)[1][3] = temp;
}
static unsigned char xtime(unsigned char x)
{
return ((x<<1) ^ (((x>>7) & 1) * 0x1b));
}
// MixColumns function mixes the columns of the state matrix
static void MixColumns(void)
{
unsigned char i;
unsigned char Tmp,Tm,t;
for(i = 0; i < 4; ++i)
{
t = (*state)[i][0];
Tmp = (*state)[i][0] ^ (*state)[i][1] ^ (*state)[i][2] ^ (*state)[i][3] ;
Tm = (*state)[i][0] ^ (*state)[i][1] ; Tm = xtime(Tm); (*state)[i][0] ^= Tm ^ Tmp ;
Tm = (*state)[i][1] ^ (*state)[i][2] ; Tm = xtime(Tm); (*state)[i][1] ^= Tm ^ Tmp ;
Tm = (*state)[i][2] ^ (*state)[i][3] ; Tm = xtime(Tm); (*state)[i][2] ^= Tm ^ Tmp ;
Tm = (*state)[i][3] ^ t ; Tm = xtime(Tm); (*state)[i][3] ^= Tm ^ Tmp ;
}
}
// Multiply is used to multiply numbers in the field GF(2^8)
#if MULTIPLY_AS_A_FUNCTION
static unsigned char Multiply(unsigned char x, unsigned char y)
{
return (((y & 1) * x) ^
((y>>1 & 1) * xtime(x)) ^
((y>>2 & 1) * xtime(xtime(x))) ^
((y>>3 & 1) * xtime(xtime(xtime(x)))) ^
((y>>4 & 1) * xtime(xtime(xtime(xtime(x))))));
}
#else
#define Multiply(x, y) \
( ((y & 1) * x) ^ \
((y>>1 & 1) * xtime(x)) ^ \
((y>>2 & 1) * xtime(xtime(x))) ^ \
((y>>3 & 1) * xtime(xtime(xtime(x)))) ^ \
((y>>4 & 1) * xtime(xtime(xtime(xtime(x)))))) \
#endif
// MixColumns function mixes the columns of the state matrix.
// The method used to multiply may be difficult to understand for the inexperienced.
// Please use the references to gain more information.
static void InvMixColumns(void)
{
int i;
unsigned char a,b,c,d;
for(i=0;i<4;++i)
{
a = (*state)[i][0];
b = (*state)[i][1];
c = (*state)[i][2];
d = (*state)[i][3];
(*state)[i][0] = Multiply(a, 0x0e) ^ Multiply(b, 0x0b) ^ Multiply(c, 0x0d) ^ Multiply(d, 0x09);
(*state)[i][1] = Multiply(a, 0x09) ^ Multiply(b, 0x0e) ^ Multiply(c, 0x0b) ^ Multiply(d, 0x0d);
(*state)[i][2] = Multiply(a, 0x0d) ^ Multiply(b, 0x09) ^ Multiply(c, 0x0e) ^ Multiply(d, 0x0b);
(*state)[i][3] = Multiply(a, 0x0b) ^ Multiply(b, 0x0d) ^ Multiply(c, 0x09) ^ Multiply(d, 0x0e);
}
}
// The SubBytes Function Substitutes the values in the
// state matrix with values in an S-box.
static void InvSubBytes(void)
{
unsigned char i,j;
for(i=0;i<4;++i)
{
for(j=0;j<4;++j)
{
(*state)[j][i] = getSBoxInvert((*state)[j][i]);
}
}
}
static void InvShiftRows(void)
{
unsigned char temp;
// Rotate first row 1 columns to right
temp=(*state)[3][1];
(*state)[3][1]=(*state)[2][1];
(*state)[2][1]=(*state)[1][1];
(*state)[1][1]=(*state)[0][1];
(*state)[0][1]=temp;
// Rotate second row 2 columns to right
temp=(*state)[0][2];
(*state)[0][2]=(*state)[2][2];
(*state)[2][2]=temp;
temp=(*state)[1][2];
(*state)[1][2]=(*state)[3][2];
(*state)[3][2]=temp;
// Rotate third row 3 columns to right
temp=(*state)[0][3];
(*state)[0][3]=(*state)[1][3];
(*state)[1][3]=(*state)[2][3];
(*state)[2][3]=(*state)[3][3];
(*state)[3][3]=temp;
}
// Cipher is the main function that encrypts the PlainText.
static void Cipher(void)
{
unsigned char round = 0;
// Add the First round key to the state before starting the rounds.
AddRoundKey(0);
// There will be Nr rounds.
// The first Nr-1 rounds are identical.
// These Nr-1 rounds are executed in the loop below.
for(round = 1; round < Nr; ++round)
{
SubBytes();
ShiftRows();
MixColumns();
AddRoundKey(round);
}
// The last round is given below.
// The MixColumns function is not here in the last round.
SubBytes();
ShiftRows();
AddRoundKey(Nr);
}
static void InvCipher(void)
{
unsigned char round=0;
// Add the First round key to the state before starting the rounds.
AddRoundKey(Nr);
// There will be Nr rounds.
// The first Nr-1 rounds are identical.
// These Nr-1 rounds are executed in the loop below.
for(round=Nr-1;round>0;round--)
{
InvShiftRows();
InvSubBytes();
AddRoundKey(round);
InvMixColumns();
}
// The last round is given below.
// The MixColumns function is not here in the last round.
InvShiftRows();
InvSubBytes();
AddRoundKey(0);
}
static void BlockCopy(unsigned char* output, const unsigned char* input)
{
unsigned char i;
for (i=0;i<16;++i)
{
output[i] = input[i];
}
}
static void aes_decrypt(unsigned char* output, unsigned char* input, unsigned int length)
{
uintptr_t i;
uint8_t extra = length % BLOCKLEN; /* Remaining bytes in the last non-full block */
// Skip the key expansion if key is passed as 0
if (0 != key)
{
Key = key;
KeyExpansion();
}
// sendchar(0x16);
// PrintDecInt(length,10);
// sendchar(0x17);
// If iv is passed as 0, we continue to encrypt without re-setting the Iv
if (iv != 0)
{
Iv = (uint8_t*)iv;
}
// sendchar(0x18);
// PrintDecInt(length,10);
// sendchar(0x19);
for (i = 0; i < length; i += BLOCKLEN)
{
memcpy(output, input, BLOCKLEN);
state = (state_t*)output;
InvCipher();
XorWithIv(output);
Iv = input;
input += BLOCKLEN;
output += BLOCKLEN;
}
// sendchar(0x20);
// PrintDecInt(length,10);
// sendchar(0x21);
if (extra)
{
memcpy(output, input, extra);
state = (state_t*)output;
InvCipher();
}
}
static void aes_encrypt(unsigned char* output, unsigned char* input, unsigned int length){
uintptr_t i;
uint8_t extra = length % 16; /* Remaining bytes in the last non-full block */
// Skip the key expansion if key is passed as 0
if (0 != key)
{
Key = key;
KeyExpansion();
}
if (iv != 0)
{
Iv = (uint8_t*)iv;
}
for (i = 0; i < length; i += 16)
{
XorWithIv(input);
memcpy(output, input, 16);
state = (state_t*)output;
Cipher();
Iv = output;
input += 16;
output += 16;
//printf("Step %d - %d", i/16, i);
}
if (extra)
{
memcpy(output, input, extra);
state = (state_t*)output;
Cipher();
}
}
//Burak
/*
* since this bootloader is not linked against the avr-gcc crt1 functions,
* to reduce the code size, we need to provide our own initialization
*/
void __jumpMain (void) __attribute__ ((naked)) __attribute__ ((section (".init9")));
#include <avr/sfr_defs.h>
//#define SPH_REG 0x3E
//#define SPL_REG 0x3D
//*****************************************************************************
void __jumpMain(void)
{
//* July 17, 2010 <MLS> Added stack pointer initialzation
//* the first line did not do the job on the ATmega128
asm volatile ( ".set __stack, %0" :: "i" (RAMEND) );
//* set stack pointer to top of RAM
asm volatile ( "ldi 16, %0" :: "i" (RAMEND >> 8) );
asm volatile ( "out %0,16" :: "i" (AVR_STACK_POINTER_HI_ADDR) );
asm volatile ( "ldi 16, %0" :: "i" (RAMEND & 0x0ff) );
asm volatile ( "out %0,16" :: "i" (AVR_STACK_POINTER_LO_ADDR) );
asm volatile ( "clr __zero_reg__" ); // GCC depends on register r1 set to 0
asm volatile ( "out %0, __zero_reg__" :: "I" (_SFR_IO_ADDR(SREG)) ); // set SREG to 0
asm volatile ( "jmp main"); // jump to main()
}
//*****************************************************************************
void delay_ms(unsigned int timedelay)
{
unsigned int i;
for (i=0;i<timedelay;i++)
{
_delay_ms(0.5);
}