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core: Fix comment and remove unused code

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tmk 2019-09-16 18:42:50 +09:00
parent 19350e3ee5
commit b3980122bb
1 changed files with 15 additions and 100 deletions
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115
tmk_core/common/avr/bootloader.c
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@ -16,8 +16,8 @@
* AVR Boot section size are defined by setting BOOTSZ fuse in fact. Consult with your MCU datasheet.
* Note that 'Word'(2 bytes) size and address are used in datasheet while TMK uses 'Byte'.
*
*
* Size of Bootloaders in bytes:
* Atmel DFU loader(ATmega32U2) 4096
* Atmel DFU loader(ATmega32U4) 4096
* Atmel DFU loader(AT90USB128) 8192
* LUFA bootloader(ATmega32U4) 4096
@ -27,33 +27,19 @@
* Teensy++ halfKay(AT90USB128) 1024
*
*
* AVR Boot section is located at the end of Flash memory like the followings.
* AVR Boot section is located at the end of Flash memory.
*
*
* byte Atmel/LUFA(ATMega32u4) byte Atmel(AT90SUB128)
* 0x0000 +---------------+ 0x00000 +---------------+
* | | | |
* | | | |
* | Application | | Application |
* | | | |
* = = = =
* | | 32KB-4KB | | 128KB-8KB
* 0x6000 +---------------+ 0x1FC00 +---------------+
* | Bootloader | 4KB | Bootloader | 8KB
* 0x7FFF +---------------+ 0x1FFFF +---------------+
*
*
* byte Teensy(ATMega32u4) byte Teensy++(AT90SUB128)
* 0x0000 +---------------+ 0x00000 +---------------+
* | | | |
* | | | |
* | Application | | Application |
* | | | |
* = = = =
* | | 32KB-512B | | 128KB-1KB
* 0x7E00 +---------------+ 0x1FC00 +---------------+
* | Bootloader | 512B | Bootloader | 1KB
* 0x7FFF +---------------+ 0x1FFFF +---------------+
* byte ATMega32u4 with 4096-byte Boot section
* 0x0000 +---------------+
* | |
* | |
* | Application | 28KB
* | |
* = =
* | |
* 0x7000 +---------------+ <---- BOOTLOADER_START
* | Bootloader | 4KB BOOTLOADER_SIZE
* 0x7FFF +---------------+ <---- FLASHEND
*/
#ifndef BOOTLOADER_SIZE
#warning To use bootloader_jump() you need to define BOOTLOADER_SIZE in config.h.
@ -64,8 +50,8 @@
#define BOOTLOADER_START (FLASH_SIZE - BOOTLOADER_SIZE)
/*
* Entering the Bootloader via Software
/*
* Entering the Bootloader via Software
* http://www.fourwalledcubicle.com/files/LUFA/Doc/120730/html/_page__software_bootloader_start.html
*/
#define BOOTLOADER_RESET_KEY 0xB007B007
@ -127,74 +113,3 @@ void bootloader_jump_after_watchdog_reset(void)
((void (*)(void))(BOOTLOADER_START/2))();
}
}
#if 0
/* Jumping To The Bootloader
* http://www.pjrc.com/teensy/jump_to_bootloader.html
*
* This method doen't work when using LUFA. idk why.
* - needs to initialize more regisers or interrupt setting?
*/
void bootloader_jump(void) {
#ifdef PROTOCOL_LUFA
USB_Disable();
cli();
_delay_ms(2000);
#endif
#ifdef PROTOCOL_PJRC
cli();
UDCON = 1;
USBCON = (1<<FRZCLK);
UCSR1B = 0;
_delay_ms(5);
#endif
/*
* Initialize
*/
#if defined(__AVR_AT90USB162__)
EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0;
TIMSK0 = 0; TIMSK1 = 0; UCSR1B = 0;
DDRB = 0; DDRC = 0; DDRD = 0;
PORTB = 0; PORTC = 0; PORTD = 0;
#elif defined(__AVR_ATmega32U4__)
EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
TIMSK0 = 0; TIMSK1 = 0; TIMSK3 = 0; TIMSK4 = 0; UCSR1B = 0; TWCR = 0;
DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0; TWCR = 0;
PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
#elif defined(__AVR_AT90USB646__)
EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0; UCSR1B = 0; TWCR = 0;
DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
#elif defined(__AVR_AT90USB1286__)
EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0; UCSR1B = 0; TWCR = 0;
DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
#endif
/*
* USBaspLoader
*/
#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega168P__) || defined(__AVR_ATmega328P__)
// This makes custom USBasploader come up.
MCUSR = 0;
// 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;
#endif
// This is compled into 'icall', address should be in word unit, not byte.
((void (*)(void))(BOOTLOADER_START/2))();
}
#endif