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- /*
- Copyright 2011 Jun Wako <[email protected]>
-
- 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");
- }
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