@ -0,0 +1,22 @@ | |||
/* | |||
Copyright 2011 Jun Wako <wakojun@gmail.com> | |||
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 | |||
(at your option) 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. | |||
You should have received a copy of the GNU General Public License | |||
along with this program. If not, see <http://www.gnu.org/licenses/>. | |||
*/ | |||
#include "bootloader.h" | |||
void bootloader_jump(void) __attribute__ ((weak)); | |||
void bootloader_jump(void) {} |
@ -0,0 +1,25 @@ | |||
/* | |||
Copyright 2011 Jun Wako <wakojun@gmail.com> | |||
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 | |||
(at your option) 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. | |||
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 BOOTLOADER_H | |||
#define BOOTLOADER_H | |||
/* give code for your bootloader to come up if needed */ | |||
void bootloader_jump(void); | |||
#endif |
@ -1,7 +0,0 @@ | |||
/* See http://www.pjrc.com/teensy/jump_to_bootloader.html */ | |||
#ifndef JUMP_BOOTLOADER_H | |||
#define JUMP_BOOTLOADER_H 1 | |||
void jump_bootloader(void); | |||
#endif |
@ -0,0 +1,47 @@ | |||
/* | |||
Copyright 2011 Jun Wako <wakojun@gmail.com> | |||
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 | |||
(at your option) 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. | |||
You should have received a copy of the GNU General Public License | |||
along with this program. If not, see <http://www.gnu.org/licenses/>. | |||
*/ | |||
#include <avr/io.h> | |||
#include <avr/interrupt.h> | |||
#include "bootloader.h" | |||
void bootloader_jump(void) { | |||
cli(); | |||
// This makes custom USBasploader come up. | |||
MCUSR = 0; | |||
// ATmega168PA | |||
// initialize ports | |||
PORTB = 0; PORTC= 0; PORTD = 0; | |||
DDRB = 0; DDRC= 0; DDRD = 0; | |||
// disable interrupts | |||
EIMSK = 0; EECR = 0; SPCR = 0; | |||
ACSR = 0; SPMCSR = 0; WDTCSR = 0; PCICR = 0; | |||
TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; | |||
ADCSRA = 0; TWCR = 0; UCSR0B = 0; | |||
// Boot Loader Section Start Address: | |||
// BOOTSZ Size Address | |||
// (lock bit) (word) (word) (byte) | |||
// '11' 128 0x1F80 0x3F00 | |||
// '10' 256 0x1F00 0x3E00 | |||
// '01' 512 0x1E00 0x3C00 | |||
// '00' 1024 0x1C00 0x3800 | |||
asm volatile("jmp 0x3800"); | |||
} |