: #define rstVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+4)) #define wdtVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+6)) #endif /* main program starts here */ int main(void) { 0: 11 24 eor r1, r1 #ifdef __AVR_ATmega8__ SP=RAMEND; // This is done by hardware reset #endif // Adaboot no-wait mod ch = MCUSR; 2: 84 b7 in r24, 0x34 ; 52 MCUSR = 0; 4: 14 be out 0x34, r1 ; 52 if (!(ch & _BV(EXTRF))) appStart(); 6: 81 ff sbrs r24, 1 8: e3 d0 rcall .+454 ; 0x1d0 #if LED_START_FLASHES > 0 // Set up Timer 1 for timeout counter TCCR1B = _BV(CS12) | _BV(CS10); // div 1024 a: 85 e0 ldi r24, 0x05 ; 5 c: 80 93 81 00 sts 0x0081, r24 UCSRA = _BV(U2X); //Double speed mode USART UCSRB = _BV(RXEN) | _BV(TXEN); // enable Rx & Tx UCSRC = _BV(URSEL) | _BV(UCSZ1) | _BV(UCSZ0); // config USART; 8N1 UBRRL = (uint8_t)( (F_CPU + BAUD_RATE * 4L) / (BAUD_RATE * 8L) - 1 ); #else UCSR0A = _BV(U2X0); //Double speed mode USART0 10: 82 e0 ldi r24, 0x02 ; 2 12: 80 93 c0 00 sts 0x00C0, r24 UCSR0B = _BV(RXEN0) | _BV(TXEN0); 16: 88 e1 ldi r24, 0x18 ; 24 18: 80 93 c1 00 sts 0x00C1, r24 UCSR0C = _BV(UCSZ00) | _BV(UCSZ01); 1c: 86 e0 ldi r24, 0x06 ; 6 1e: 80 93 c2 00 sts 0x00C2, r24 UBRR0L = (uint8_t)( (F_CPU + BAUD_RATE * 4L) / (BAUD_RATE * 8L) - 1 ); 22: 88 e0 ldi r24, 0x08 ; 8 24: 80 93 c4 00 sts 0x00C4, r24 #endif #endif // Set up watchdog to trigger after 500ms watchdogConfig(WATCHDOG_1S); 28: 8e e0 ldi r24, 0x0E ; 14 2a: bc d0 rcall .+376 ; 0x1a4 /* Set LED pin as output */ LED_DDR |= _BV(LED); 2c: 25 9a sbi 0x04, 5 ; 4 2e: 86 e0 ldi r24, 0x06 ; 6 } #if LED_START_FLASHES > 0 void flash_led(uint8_t count) { do { TCNT1 = -(F_CPU/(1024*16)); 30: 28 e1 ldi r18, 0x18 ; 24 32: 3e ef ldi r19, 0xFE ; 254 TIFR1 = _BV(TOV1); 34: 91 e0 ldi r25, 0x01 ; 1 } #if LED_START_FLASHES > 0 void flash_led(uint8_t count) { do { TCNT1 = -(F_CPU/(1024*16)); 36: 30 93 85 00 sts 0x0085, r19 3a: 20 93 84 00 sts 0x0084, r18 TIFR1 = _BV(TOV1); 3e: 96 bb out 0x16, r25 ; 22 while(!(TIFR1 & _BV(TOV1))); 40: b0 9b sbis 0x16, 0 ; 22 42: fe cf rjmp .-4 ; 0x40 <__SREG__+0x1> #ifdef __AVR_ATmega8__ LED_PORT ^= _BV(LED); #else LED_PIN |= _BV(LED); 44: 1d 9a sbi 0x03, 5 ; 3 } #endif // Watchdog functions. These are only safe with interrupts turned off. void watchdogReset() { __asm__ __volatile__ ( 46: a8 95 wdr LED_PORT ^= _BV(LED); #else LED_PIN |= _BV(LED); #endif watchdogReset(); } while (--count); 48: 81 50 subi r24, 0x01 ; 1 4a: a9 f7 brne .-22 ; 0x36 <__CCP__+0x2> /* get character from UART */ ch = getch(); if(ch == STK_GET_PARAMETER) { // GET PARAMETER returns a generic 0x03 reply - enough to keep Avrdude happy getNch(1); 4c: 99 24 eor r9, r9 4e: 93 94 inc r9 __boot_page_fill_short((uint16_t)(void*)addrPtr,a); addrPtr += 2; } while (--ch); // Write from programming buffer __boot_page_write_short((uint16_t)(void*)address); 50: a5 e0 ldi r26, 0x05 ; 5 52: aa 2e mov r10, r26 boot_spm_busy_wait(); #if defined(RWWSRE) // Reenable read access to flash boot_rww_enable(); 54: f1 e1 ldi r31, 0x11 ; 17 56: bf 2e mov r11, r31 #endif /* Forever loop */ for (;;) { /* get character from UART */ ch = getch(); 58: 9d d0 rcall .+314 ; 0x194 if(ch == STK_GET_PARAMETER) { 5a: 81 34 cpi r24, 0x41 ; 65 5c: 21 f4 brne .+8 ; 0x66 <__SREG__+0x27> // GET PARAMETER returns a generic 0x03 reply - enough to keep Avrdude happy getNch(1); 5e: 81 e0 ldi r24, 0x01 ; 1 60: af d0 rcall .+350 ; 0x1c0 putch(0x03); 62: 83 e0 ldi r24, 0x03 ; 3 64: 1f c0 rjmp .+62 ; 0xa4 <__SREG__+0x65> } else if(ch == STK_SET_DEVICE) { 66: 82 34 cpi r24, 0x42 ; 66 68: 11 f4 brne .+4 ; 0x6e <__SREG__+0x2f> // SET DEVICE is ignored getNch(20); 6a: 84 e1 ldi r24, 0x14 ; 20 6c: 03 c0 rjmp .+6 ; 0x74 <__SREG__+0x35> } else if(ch == STK_SET_DEVICE_EXT) { 6e: 85 34 cpi r24, 0x45 ; 69 70: 19 f4 brne .+6 ; 0x78 <__SREG__+0x39> // SET DEVICE EXT is ignored getNch(5); 72: 85 e0 ldi r24, 0x05 ; 5 74: a5 d0 rcall .+330 ; 0x1c0 76: 83 c0 rjmp .+262 ; 0x17e <__SREG__+0x13f> } else if(ch == STK_LOAD_ADDRESS) { 78: 85 35 cpi r24, 0x55 ; 85 7a: 79 f4 brne .+30 ; 0x9a <__SREG__+0x5b> // LOAD ADDRESS uint16_t newAddress; newAddress = getch(); 7c: 8b d0 rcall .+278 ; 0x194 newAddress = (newAddress & 0xff) | (getch() << 8); 7e: e8 2e mov r14, r24 80: ff 24 eor r15, r15 82: 88 d0 rcall .+272 ; 0x194 84: 08 2f mov r16, r24 86: 10 e0 ldi r17, 0x00 ; 0 88: 10 2f mov r17, r16 8a: 00 27 eor r16, r16 8c: 0e 29 or r16, r14 8e: 1f 29 or r17, r15 #ifdef RAMPZ // Transfer top bit to RAMPZ RAMPZ = (newAddress & 0x8000) ? 1 : 0; #endif newAddress += newAddress; // Convert from word address to byte address 90: 00 0f add r16, r16 92: 11 1f adc r17, r17 address = newAddress; verifySpace(); 94: 8d d0 rcall .+282 ; 0x1b0 96: 68 01 movw r12, r16 98: 72 c0 rjmp .+228 ; 0x17e <__SREG__+0x13f> } else if(ch == STK_UNIVERSAL) { 9a: 86 35 cpi r24, 0x56 ; 86 9c: 29 f4 brne .+10 ; 0xa8 <__SREG__+0x69> // UNIVERSAL command is ignored getNch(4); 9e: 84 e0 ldi r24, 0x04 ; 4 a0: 8f d0 rcall .+286 ; 0x1c0 putch(0x00); a2: 80 e0 ldi r24, 0x00 ; 0 a4: 6f d0 rcall .+222 ; 0x184 a6: 6b c0 rjmp .+214 ; 0x17e <__SREG__+0x13f> } /* Write memory, length is big endian and is in bytes */ else if(ch == STK_PROG_PAGE) { a8: 84 36 cpi r24, 0x64 ; 100 aa: 09 f0 breq .+2 ; 0xae <__SREG__+0x6f> ac: 42 c0 rjmp .+132 ; 0x132 <__SREG__+0xf3> // PROGRAM PAGE - we support flash programming only, not EEPROM uint8_t *bufPtr; uint16_t addrPtr; getch(); /* getlen() */ ae: 72 d0 rcall .+228 ; 0x194 length = getch(); b0: 71 d0 rcall .+226 ; 0x194 b2: 08 2f mov r16, r24 getch(); b4: 6f d0 rcall .+222 ; 0x194 // If we are in RWW section, immediately start page erase if (address < NRWWSTART) __boot_page_erase_short((uint16_t)(void*)address); b6: 80 e0 ldi r24, 0x00 ; 0 b8: c8 16 cp r12, r24 ba: 80 e7 ldi r24, 0x70 ; 112 bc: d8 06 cpc r13, r24 be: 20 f4 brcc .+8 ; 0xc8 <__SREG__+0x89> c0: 83 e0 ldi r24, 0x03 ; 3 c2: f6 01 movw r30, r12 c4: 87 bf out 0x37, r24 ; 55 c6: e8 95 spm c8: c0 e0 ldi r28, 0x00 ; 0 ca: d1 e0 ldi r29, 0x01 ; 1 // While that is going on, read in page contents bufPtr = buff; do *bufPtr++ = getch(); cc: 63 d0 rcall .+198 ; 0x194 ce: 89 93 st Y+, r24 while (--length); d0: 0c 17 cp r16, r28 d2: e1 f7 brne .-8 ; 0xcc <__SREG__+0x8d> // If we are in NRWW section, page erase has to be delayed until now. // Todo: Take RAMPZ into account if (address >= NRWWSTART) __boot_page_erase_short((uint16_t)(void*)address); d4: f0 e0 ldi r31, 0x00 ; 0 d6: cf 16 cp r12, r31 d8: f0 e7 ldi r31, 0x70 ; 112 da: df 06 cpc r13, r31 dc: 20 f0 brcs .+8 ; 0xe6 <__SREG__+0xa7> de: 83 e0 ldi r24, 0x03 ; 3 e0: f6 01 movw r30, r12 e2: 87 bf out 0x37, r24 ; 55 e4: e8 95 spm // Read command terminator, start reply verifySpace(); e6: 64 d0 rcall .+200 ; 0x1b0 // If only a partial page is to be programmed, the erase might not be complete. // So check that here boot_spm_busy_wait(); e8: 07 b6 in r0, 0x37 ; 55 ea: 00 fc sbrc r0, 0 ec: fd cf rjmp .-6 ; 0xe8 <__SREG__+0xa9> ee: a6 01 movw r20, r12 f0: a0 e0 ldi r26, 0x00 ; 0 f2: b1 e0 ldi r27, 0x01 ; 1 bufPtr = buff; addrPtr = (uint16_t)(void*)address; ch = SPM_PAGESIZE / 2; do { uint16_t a; a = *bufPtr++; f4: 2c 91 ld r18, X f6: 30 e0 ldi r19, 0x00 ; 0 a |= (*bufPtr++) << 8; f8: 11 96 adiw r26, 0x01 ; 1 fa: 8c 91 ld r24, X fc: 11 97 sbiw r26, 0x01 ; 1 fe: 90 e0 ldi r25, 0x00 ; 0 100: 98 2f mov r25, r24 102: 88 27 eor r24, r24 104: 82 2b or r24, r18 106: 93 2b or r25, r19 #define rstVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+4)) #define wdtVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+6)) #endif /* main program starts here */ int main(void) { 108: 12 96 adiw r26, 0x02 ; 2 ch = SPM_PAGESIZE / 2; do { uint16_t a; a = *bufPtr++; a |= (*bufPtr++) << 8; __boot_page_fill_short((uint16_t)(void*)addrPtr,a); 10a: fa 01 movw r30, r20 10c: 0c 01 movw r0, r24 10e: 97 be out 0x37, r9 ; 55 110: e8 95 spm 112: 11 24 eor r1, r1 addrPtr += 2; 114: 4e 5f subi r20, 0xFE ; 254 116: 5f 4f sbci r21, 0xFF ; 255 } while (--ch); 118: f1 e0 ldi r31, 0x01 ; 1 11a: a0 38 cpi r26, 0x80 ; 128 11c: bf 07 cpc r27, r31 11e: 51 f7 brne .-44 ; 0xf4 <__SREG__+0xb5> // Write from programming buffer __boot_page_write_short((uint16_t)(void*)address); 120: f6 01 movw r30, r12 122: a7 be out 0x37, r10 ; 55 124: e8 95 spm boot_spm_busy_wait(); 126: 07 b6 in r0, 0x37 ; 55 128: 00 fc sbrc r0, 0 12a: fd cf rjmp .-6 ; 0x126 <__SREG__+0xe7> #if defined(RWWSRE) // Reenable read access to flash boot_rww_enable(); 12c: b7 be out 0x37, r11 ; 55 12e: e8 95 spm 130: 26 c0 rjmp .+76 ; 0x17e <__SREG__+0x13f> #endif } /* Read memory block mode, length is big endian. */ else if(ch == STK_READ_PAGE) { 132: 84 37 cpi r24, 0x74 ; 116 134: b1 f4 brne .+44 ; 0x162 <__SREG__+0x123> // READ PAGE - we only read flash getch(); /* getlen() */ 136: 2e d0 rcall .+92 ; 0x194 length = getch(); 138: 2d d0 rcall .+90 ; 0x194 13a: f8 2e mov r15, r24 getch(); 13c: 2b d0 rcall .+86 ; 0x194 verifySpace(); 13e: 38 d0 rcall .+112 ; 0x1b0 140: f6 01 movw r30, r12 142: ef 2c mov r14, r15 putch(result); address++; } while (--length); #else do putch(pgm_read_byte_near(address++)); 144: 8f 01 movw r16, r30 146: 0f 5f subi r16, 0xFF ; 255 148: 1f 4f sbci r17, 0xFF ; 255 14a: 84 91 lpm r24, Z+ 14c: 1b d0 rcall .+54 ; 0x184 while (--length); 14e: ea 94 dec r14 150: f8 01 movw r30, r16 152: c1 f7 brne .-16 ; 0x144 <__SREG__+0x105> #define rstVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+4)) #define wdtVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+6)) #endif /* main program starts here */ int main(void) { 154: 08 94 sec 156: c1 1c adc r12, r1 158: d1 1c adc r13, r1 15a: fa 94 dec r15 15c: cf 0c add r12, r15 15e: d1 1c adc r13, r1 160: 0e c0 rjmp .+28 ; 0x17e <__SREG__+0x13f> #endif #endif } /* Get device signature bytes */ else if(ch == STK_READ_SIGN) { 162: 85 37 cpi r24, 0x75 ; 117 164: 39 f4 brne .+14 ; 0x174 <__SREG__+0x135> // READ SIGN - return what Avrdude wants to hear verifySpace(); 166: 24 d0 rcall .+72 ; 0x1b0 putch(SIGNATURE_0); 168: 8e e1 ldi r24, 0x1E ; 30 16a: 0c d0 rcall .+24 ; 0x184 putch(SIGNATURE_1); 16c: 85 e9 ldi r24, 0x95 ; 149 16e: 0a d0 rcall .+20 ; 0x184 putch(SIGNATURE_2); 170: 8f e0 ldi r24, 0x0F ; 15 172: 98 cf rjmp .-208 ; 0xa4 <__SREG__+0x65> } else if (ch == 'Q') { 174: 81 35 cpi r24, 0x51 ; 81 176: 11 f4 brne .+4 ; 0x17c <__SREG__+0x13d> // Adaboot no-wait mod watchdogConfig(WATCHDOG_16MS); 178: 88 e0 ldi r24, 0x08 ; 8 17a: 14 d0 rcall .+40 ; 0x1a4 verifySpace(); } else { // This covers the response to commands like STK_ENTER_PROGMODE verifySpace(); 17c: 19 d0 rcall .+50 ; 0x1b0 } putch(STK_OK); 17e: 80 e1 ldi r24, 0x10 ; 16 180: 01 d0 rcall .+2 ; 0x184 182: 6a cf rjmp .-300 ; 0x58 <__SREG__+0x19> 00000184 : } } void putch(char ch) { 184: 98 2f mov r25, r24 #ifndef SOFT_UART while (!(UCSR0A & _BV(UDRE0))); 186: 80 91 c0 00 lds r24, 0x00C0 18a: 85 ff sbrs r24, 5 18c: fc cf rjmp .-8 ; 0x186 UDR0 = ch; 18e: 90 93 c6 00 sts 0x00C6, r25 [uartBit] "I" (UART_TX_BIT) : "r25" ); #endif } 192: 08 95 ret 00000194 : } #endif // Watchdog functions. These are only safe with interrupts turned off. void watchdogReset() { __asm__ __volatile__ ( 194: a8 95 wdr [uartBit] "I" (UART_RX_BIT) : "r25" ); #else while(!(UCSR0A & _BV(RXC0))); 196: 80 91 c0 00 lds r24, 0x00C0 19a: 87 ff sbrs r24, 7 19c: fc cf rjmp .-8 ; 0x196 ch = UDR0; 19e: 80 91 c6 00 lds r24, 0x00C6 LED_PIN |= _BV(LED); #endif #endif return ch; } 1a2: 08 95 ret 000001a4 : "wdr\n" ); } void watchdogConfig(uint8_t x) { WDTCSR = _BV(WDCE) | _BV(WDE); 1a4: e0 e6 ldi r30, 0x60 ; 96 1a6: f0 e0 ldi r31, 0x00 ; 0 1a8: 98 e1 ldi r25, 0x18 ; 24 1aa: 90 83 st Z, r25 WDTCSR = x; 1ac: 80 83 st Z, r24 } 1ae: 08 95 ret 000001b0 : do getch(); while (--count); verifySpace(); } void verifySpace() { if (getch() != CRC_EOP) { 1b0: f1 df rcall .-30 ; 0x194 1b2: 80 32 cpi r24, 0x20 ; 32 1b4: 19 f0 breq .+6 ; 0x1bc watchdogConfig(WATCHDOG_16MS); // shorten WD timeout 1b6: 88 e0 ldi r24, 0x08 ; 8 1b8: f5 df rcall .-22 ; 0x1a4 1ba: ff cf rjmp .-2 ; 0x1ba while (1) // and busy-loop so that WD causes ; // a reset and app start. } putch(STK_INSYNC); 1bc: 84 e1 ldi r24, 0x14 ; 20 } 1be: e2 cf rjmp .-60 ; 0x184 000001c0 : ::[count] "M" (UART_B_VALUE) ); } #endif void getNch(uint8_t count) { 1c0: 1f 93 push r17 1c2: 18 2f mov r17, r24 do getch(); while (--count); 1c4: e7 df rcall .-50 ; 0x194 1c6: 11 50 subi r17, 0x01 ; 1 1c8: e9 f7 brne .-6 ; 0x1c4 verifySpace(); 1ca: f2 df rcall .-28 ; 0x1b0 } 1cc: 1f 91 pop r17 1ce: 08 95 ret 000001d0 : WDTCSR = _BV(WDCE) | _BV(WDE); WDTCSR = x; } void appStart() { watchdogConfig(WATCHDOG_OFF); 1d0: 80 e0 ldi r24, 0x00 ; 0 1d2: e8 df rcall .-48 ; 0x1a4 __asm__ __volatile__ ( 1d4: ee 27 eor r30, r30 1d6: ff 27 eor r31, r31 1d8: 09 94 ijmp