: #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) { 1d00: 11 24 eor r1, r1 #ifdef __AVR_ATmega8__ SP=RAMEND; // This is done by hardware reset #endif // Adaboot no-wait mod ch = MCUSR; 1d02: 84 b7 in r24, 0x34 ; 52 MCUSR = 0; 1d04: 14 be out 0x34, r1 ; 52 if (!(ch & _BV(EXTRF))) appStart(); 1d06: 81 ff sbrs r24, 1 1d08: 17 d1 rcall .+558 ; 0x1f38 #if LED_START_FLASHES > 0 // Set up Timer 1 for timeout counter TCCR1B = _BV(CS12) | _BV(CS10); // div 1024 1d0a: 85 e0 ldi r24, 0x05 ; 5 1d0c: 8e bd out 0x2e, r24 ; 46 UBRR0L = (uint8_t)( (F_CPU + BAUD_RATE * 4L) / (BAUD_RATE * 8L) - 1 ); #endif #endif // Set up watchdog to trigger after 500ms watchdogConfig(WATCHDOG_1S); 1d0e: 8e e0 ldi r24, 0x0E ; 14 1d10: ff d0 rcall .+510 ; 0x1f10 /* Set LED pin as output */ LED_DDR |= _BV(LED); 1d12: d4 9a sbi 0x1a, 4 ; 26 #ifdef SOFT_UART /* Set TX pin as output */ UART_DDR |= _BV(UART_TX_BIT); 1d14: d2 9a sbi 0x1a, 2 ; 26 1d16: 86 e0 ldi r24, 0x06 ; 6 } #if LED_START_FLASHES > 0 void flash_led(uint8_t count) { do { TCNT1 = -(F_CPU/(1024*16)); 1d18: 23 ec ldi r18, 0xC3 ; 195 1d1a: 3f ef ldi r19, 0xFF ; 255 TIFR1 = _BV(TOV1); 1d1c: 91 e0 ldi r25, 0x01 ; 1 } #if LED_START_FLASHES > 0 void flash_led(uint8_t count) { do { TCNT1 = -(F_CPU/(1024*16)); 1d1e: 3d bd out 0x2d, r19 ; 45 1d20: 2c bd out 0x2c, r18 ; 44 TIFR1 = _BV(TOV1); 1d22: 9b b9 out 0x0b, r25 ; 11 while(!(TIFR1 & _BV(TOV1))); 1d24: 58 9b sbis 0x0b, 0 ; 11 1d26: fe cf rjmp .-4 ; 0x1d24 #ifdef __AVR_ATmega8__ LED_PORT ^= _BV(LED); #else LED_PIN |= _BV(LED); 1d28: cc 9a sbi 0x19, 4 ; 25 } #endif // Watchdog functions. These are only safe with interrupts turned off. void watchdogReset() { __asm__ __volatile__ ( 1d2a: a8 95 wdr LED_PORT ^= _BV(LED); #else LED_PIN |= _BV(LED); #endif watchdogReset(); } while (--count); 1d2c: 81 50 subi r24, 0x01 ; 1 1d2e: b9 f7 brne .-18 ; 0x1d1e /* 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); 1d30: bb 24 eor r11, r11 1d32: b3 94 inc r11 __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); 1d34: 25 e0 ldi r18, 0x05 ; 5 1d36: a2 2e mov r10, r18 vect -= 4; // Instruction is a relative jump (rjmp), so recalculate. buff[8] = vect & 0xff; buff[9] = vect >> 8; // Add jump to bootloader at RESET vector buff[0] = 0x7f; 1d38: 9f e7 ldi r25, 0x7F ; 127 1d3a: d9 2e mov r13, r25 buff[1] = 0xce; // rjmp 0x1d00 instruction 1d3c: 8e ec ldi r24, 0xCE ; 206 1d3e: c8 2e mov r12, r24 #endif /* Forever loop */ for (;;) { /* get character from UART */ ch = getch(); 1d40: d4 d0 rcall .+424 ; 0x1eea if(ch == STK_GET_PARAMETER) { 1d42: 81 34 cpi r24, 0x41 ; 65 1d44: 21 f4 brne .+8 ; 0x1d4e // GET PARAMETER returns a generic 0x03 reply - enough to keep Avrdude happy getNch(1); 1d46: 81 e0 ldi r24, 0x01 ; 1 1d48: ef d0 rcall .+478 ; 0x1f28 putch(0x03); 1d4a: 83 e0 ldi r24, 0x03 ; 3 1d4c: b5 c0 rjmp .+362 ; 0x1eb8 } else if(ch == STK_SET_DEVICE) { 1d4e: 82 34 cpi r24, 0x42 ; 66 1d50: 11 f4 brne .+4 ; 0x1d56 // SET DEVICE is ignored getNch(20); 1d52: 84 e1 ldi r24, 0x14 ; 20 1d54: 03 c0 rjmp .+6 ; 0x1d5c } else if(ch == STK_SET_DEVICE_EXT) { 1d56: 85 34 cpi r24, 0x45 ; 69 1d58: 19 f4 brne .+6 ; 0x1d60 // SET DEVICE EXT is ignored getNch(5); 1d5a: 85 e0 ldi r24, 0x05 ; 5 1d5c: e5 d0 rcall .+458 ; 0x1f28 1d5e: b3 c0 rjmp .+358 ; 0x1ec6 } else if(ch == STK_LOAD_ADDRESS) { 1d60: 85 35 cpi r24, 0x55 ; 85 1d62: 69 f4 brne .+26 ; 0x1d7e // LOAD ADDRESS uint16_t newAddress; newAddress = getch(); 1d64: c2 d0 rcall .+388 ; 0x1eea newAddress = (newAddress & 0xff) | (getch() << 8); 1d66: e8 2e mov r14, r24 1d68: ff 24 eor r15, r15 1d6a: bf d0 rcall .+382 ; 0x1eea 1d6c: 08 2f mov r16, r24 1d6e: 10 e0 ldi r17, 0x00 ; 0 1d70: 10 2f mov r17, r16 1d72: 00 27 eor r16, r16 1d74: 0e 29 or r16, r14 1d76: 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 1d78: 00 0f add r16, r16 1d7a: 11 1f adc r17, r17 1d7c: a3 c0 rjmp .+326 ; 0x1ec4 address = newAddress; verifySpace(); } else if(ch == STK_UNIVERSAL) { 1d7e: 86 35 cpi r24, 0x56 ; 86 1d80: 21 f4 brne .+8 ; 0x1d8a // UNIVERSAL command is ignored getNch(4); 1d82: 84 e0 ldi r24, 0x04 ; 4 1d84: d1 d0 rcall .+418 ; 0x1f28 putch(0x00); 1d86: 80 e0 ldi r24, 0x00 ; 0 1d88: 97 c0 rjmp .+302 ; 0x1eb8 } /* Write memory, length is big endian and is in bytes */ else if(ch == STK_PROG_PAGE) { 1d8a: 84 36 cpi r24, 0x64 ; 100 1d8c: 09 f0 breq .+2 ; 0x1d90 1d8e: 60 c0 rjmp .+192 ; 0x1e50 // PROGRAM PAGE - we support flash programming only, not EEPROM uint8_t *bufPtr; uint16_t addrPtr; getch(); /* getlen() */ 1d90: ac d0 rcall .+344 ; 0x1eea length = getch(); 1d92: ab d0 rcall .+342 ; 0x1eea 1d94: f8 2e mov r15, r24 getch(); 1d96: a9 d0 rcall .+338 ; 0x1eea 1d98: c0 e0 ldi r28, 0x00 ; 0 1d9a: d1 e0 ldi r29, 0x01 ; 1 // If we are in RWW section, immediately start page erase if (address < NRWWSTART) __boot_page_erase_short((uint16_t)(void*)address); // While that is going on, read in page contents bufPtr = buff; do *bufPtr++ = getch(); 1d9c: a6 d0 rcall .+332 ; 0x1eea 1d9e: 89 93 st Y+, r24 while (--length); 1da0: fc 16 cp r15, r28 1da2: e1 f7 brne .-8 ; 0x1d9c // 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); 1da4: 83 e0 ldi r24, 0x03 ; 3 1da6: f8 01 movw r30, r16 1da8: 87 bf out 0x37, r24 ; 55 1daa: e8 95 spm // Read command terminator, start reply verifySpace(); 1dac: b5 d0 rcall .+362 ; 0x1f18 // If only a partial page is to be programmed, the erase might not be complete. // So check that here boot_spm_busy_wait(); 1dae: 07 b6 in r0, 0x37 ; 55 1db0: 00 fc sbrc r0, 0 1db2: fd cf rjmp .-6 ; 0x1dae #ifdef VIRTUAL_BOOT_PARTITION if ((uint16_t)(void*)address == 0) { 1db4: 01 15 cp r16, r1 1db6: 11 05 cpc r17, r1 1db8: 11 f0 breq .+4 ; 0x1dbe 1dba: a8 01 movw r20, r16 1dbc: 2a c0 rjmp .+84 ; 0x1e12 // This is the reset vector page. We need to live-patch the code so the // bootloader runs. // // Move RESET vector to WDT vector uint16_t vect = buff[0] | (buff[1]<<8); 1dbe: 80 91 00 01 lds r24, 0x0100 1dc2: 20 91 01 01 lds r18, 0x0101 1dc6: 30 e0 ldi r19, 0x00 ; 0 1dc8: 32 2f mov r19, r18 1dca: 22 27 eor r18, r18 1dcc: 90 e0 ldi r25, 0x00 ; 0 1dce: 28 2b or r18, r24 1dd0: 39 2b or r19, r25 rstVect = vect; 1dd2: 30 93 85 01 sts 0x0185, r19 1dd6: 20 93 84 01 sts 0x0184, r18 wdtVect = buff[8] | (buff[9]<<8); 1dda: 40 91 08 01 lds r20, 0x0108 1dde: 80 91 09 01 lds r24, 0x0109 1de2: 90 e0 ldi r25, 0x00 ; 0 1de4: 98 2f mov r25, r24 1de6: 88 27 eor r24, r24 1de8: 50 e0 ldi r21, 0x00 ; 0 1dea: 84 2b or r24, r20 1dec: 95 2b or r25, r21 1dee: 90 93 87 01 sts 0x0187, r25 1df2: 80 93 86 01 sts 0x0186, r24 vect -= 4; // Instruction is a relative jump (rjmp), so recalculate. 1df6: 24 50 subi r18, 0x04 ; 4 1df8: 30 40 sbci r19, 0x00 ; 0 buff[8] = vect & 0xff; 1dfa: 20 93 08 01 sts 0x0108, r18 buff[9] = vect >> 8; 1dfe: 23 2f mov r18, r19 1e00: 33 27 eor r19, r19 1e02: 20 93 09 01 sts 0x0109, r18 // Add jump to bootloader at RESET vector buff[0] = 0x7f; 1e06: d0 92 00 01 sts 0x0100, r13 buff[1] = 0xce; // rjmp 0x1d00 instruction 1e0a: c0 92 01 01 sts 0x0101, r12 1e0e: 40 e0 ldi r20, 0x00 ; 0 1e10: 50 e0 ldi r21, 0x00 ; 0 1e12: a0 e0 ldi r26, 0x00 ; 0 1e14: b1 e0 ldi r27, 0x01 ; 1 bufPtr = buff; addrPtr = (uint16_t)(void*)address; ch = SPM_PAGESIZE / 2; do { uint16_t a; a = *bufPtr++; 1e16: 2c 91 ld r18, X 1e18: 30 e0 ldi r19, 0x00 ; 0 a |= (*bufPtr++) << 8; 1e1a: 11 96 adiw r26, 0x01 ; 1 1e1c: 8c 91 ld r24, X 1e1e: 11 97 sbiw r26, 0x01 ; 1 1e20: 90 e0 ldi r25, 0x00 ; 0 1e22: 98 2f mov r25, r24 1e24: 88 27 eor r24, r24 1e26: 82 2b or r24, r18 1e28: 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) { 1e2a: 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); 1e2c: fa 01 movw r30, r20 1e2e: 0c 01 movw r0, r24 1e30: b7 be out 0x37, r11 ; 55 1e32: e8 95 spm 1e34: 11 24 eor r1, r1 addrPtr += 2; 1e36: 4e 5f subi r20, 0xFE ; 254 1e38: 5f 4f sbci r21, 0xFF ; 255 } while (--ch); 1e3a: f1 e0 ldi r31, 0x01 ; 1 1e3c: a0 34 cpi r26, 0x40 ; 64 1e3e: bf 07 cpc r27, r31 1e40: 51 f7 brne .-44 ; 0x1e16 // Write from programming buffer __boot_page_write_short((uint16_t)(void*)address); 1e42: f8 01 movw r30, r16 1e44: a7 be out 0x37, r10 ; 55 1e46: e8 95 spm boot_spm_busy_wait(); 1e48: 07 b6 in r0, 0x37 ; 55 1e4a: 00 fc sbrc r0, 0 1e4c: fd cf rjmp .-6 ; 0x1e48 1e4e: 3b c0 rjmp .+118 ; 0x1ec6 boot_rww_enable(); #endif } /* Read memory block mode, length is big endian. */ else if(ch == STK_READ_PAGE) { 1e50: 84 37 cpi r24, 0x74 ; 116 1e52: 51 f5 brne .+84 ; 0x1ea8 // READ PAGE - we only read flash getch(); /* getlen() */ 1e54: 4a d0 rcall .+148 ; 0x1eea length = getch(); 1e56: 49 d0 rcall .+146 ; 0x1eea 1e58: f8 2e mov r15, r24 getch(); 1e5a: 47 d0 rcall .+142 ; 0x1eea verifySpace(); 1e5c: 5d d0 rcall .+186 ; 0x1f18 1e5e: e8 01 movw r28, r16 1e60: ef 2c mov r14, r15 #ifdef VIRTUAL_BOOT_PARTITION do { // Undo vector patch in bottom page so verify passes if (address == 0) ch=rstVect & 0xff; 1e62: 20 97 sbiw r28, 0x00 ; 0 1e64: 19 f4 brne .+6 ; 0x1e6c 1e66: 80 91 84 01 lds r24, 0x0184 1e6a: 14 c0 rjmp .+40 ; 0x1e94 else if (address == 1) ch=rstVect >> 8; 1e6c: c1 30 cpi r28, 0x01 ; 1 1e6e: d1 05 cpc r29, r1 1e70: 19 f4 brne .+6 ; 0x1e78 1e72: 80 91 85 01 lds r24, 0x0185 1e76: 0e c0 rjmp .+28 ; 0x1e94 else if (address == 8) ch=wdtVect & 0xff; 1e78: c8 30 cpi r28, 0x08 ; 8 1e7a: d1 05 cpc r29, r1 1e7c: 19 f4 brne .+6 ; 0x1e84 1e7e: 80 91 86 01 lds r24, 0x0186 1e82: 08 c0 rjmp .+16 ; 0x1e94 else if (address == 9) ch=wdtVect >> 8; 1e84: c9 30 cpi r28, 0x09 ; 9 1e86: d1 05 cpc r29, r1 1e88: 19 f4 brne .+6 ; 0x1e90 1e8a: 80 91 87 01 lds r24, 0x0187 1e8e: 02 c0 rjmp .+4 ; 0x1e94 else ch = pgm_read_byte_near(address); 1e90: fe 01 movw r30, r28 1e92: 84 91 lpm r24, Z+ address++; 1e94: 21 96 adiw r28, 0x01 ; 1 putch(ch); 1e96: 1a d0 rcall .+52 ; 0x1ecc } while (--length); 1e98: ea 94 dec r14 1e9a: 19 f7 brne .-58 ; 0x1e62 #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) { 1e9c: 0f 5f subi r16, 0xFF ; 255 1e9e: 1f 4f sbci r17, 0xFF ; 255 1ea0: fa 94 dec r15 1ea2: 0f 0d add r16, r15 1ea4: 11 1d adc r17, r1 1ea6: 0f c0 rjmp .+30 ; 0x1ec6 #endif #endif } /* Get device signature bytes */ else if(ch == STK_READ_SIGN) { 1ea8: 85 37 cpi r24, 0x75 ; 117 1eaa: 41 f4 brne .+16 ; 0x1ebc // READ SIGN - return what Avrdude wants to hear verifySpace(); 1eac: 35 d0 rcall .+106 ; 0x1f18 putch(SIGNATURE_0); 1eae: 8e e1 ldi r24, 0x1E ; 30 1eb0: 0d d0 rcall .+26 ; 0x1ecc putch(SIGNATURE_1); 1eb2: 83 e9 ldi r24, 0x93 ; 147 1eb4: 0b d0 rcall .+22 ; 0x1ecc putch(SIGNATURE_2); 1eb6: 8c e0 ldi r24, 0x0C ; 12 1eb8: 09 d0 rcall .+18 ; 0x1ecc 1eba: 05 c0 rjmp .+10 ; 0x1ec6 } else if (ch == 'Q') { 1ebc: 81 35 cpi r24, 0x51 ; 81 1ebe: 11 f4 brne .+4 ; 0x1ec4 // Adaboot no-wait mod watchdogConfig(WATCHDOG_16MS); 1ec0: 88 e0 ldi r24, 0x08 ; 8 1ec2: 26 d0 rcall .+76 ; 0x1f10 verifySpace(); } else { // This covers the response to commands like STK_ENTER_PROGMODE verifySpace(); 1ec4: 29 d0 rcall .+82 ; 0x1f18 } putch(STK_OK); 1ec6: 80 e1 ldi r24, 0x10 ; 16 1ec8: 01 d0 rcall .+2 ; 0x1ecc 1eca: 3a cf rjmp .-396 ; 0x1d40 00001ecc : void putch(char ch) { #ifndef SOFT_UART while (!(UCSR0A & _BV(UDRE0))); UDR0 = ch; #else __asm__ __volatile__ ( 1ecc: 2a e0 ldi r18, 0x0A ; 10 1ece: 30 e0 ldi r19, 0x00 ; 0 1ed0: 80 95 com r24 1ed2: 08 94 sec 1ed4: 10 f4 brcc .+4 ; 0x1eda 1ed6: da 98 cbi 0x1b, 2 ; 27 1ed8: 02 c0 rjmp .+4 ; 0x1ede 1eda: da 9a sbi 0x1b, 2 ; 27 1edc: 00 00 nop 1ede: 14 d0 rcall .+40 ; 0x1f08 1ee0: 13 d0 rcall .+38 ; 0x1f08 1ee2: 86 95 lsr r24 1ee4: 2a 95 dec r18 1ee6: b1 f7 brne .-20 ; 0x1ed4 [uartBit] "I" (UART_TX_BIT) : "r25" ); #endif } 1ee8: 08 95 ret 00001eea : LED_PIN |= _BV(LED); #endif #endif return ch; } 1eea: 29 e0 ldi r18, 0x09 ; 9 1eec: 30 e0 ldi r19, 0x00 ; 0 1eee: cb 99 sbic 0x19, 3 ; 25 1ef0: fe cf rjmp .-4 ; 0x1eee 1ef2: 0a d0 rcall .+20 ; 0x1f08 1ef4: 09 d0 rcall .+18 ; 0x1f08 1ef6: 08 d0 rcall .+16 ; 0x1f08 1ef8: 88 94 clc 1efa: cb 99 sbic 0x19, 3 ; 25 1efc: 08 94 sec 1efe: 2a 95 dec r18 1f00: 11 f0 breq .+4 ; 0x1f06 1f02: 87 95 ror r24 1f04: f7 cf rjmp .-18 ; 0x1ef4 1f06: 08 95 ret 00001f08 : #if UART_B_VALUE > 255 #error Baud rate too slow for soft UART #endif void uartDelay() { __asm__ __volatile__ ( 1f08: 9e e0 ldi r25, 0x0E ; 14 1f0a: 9a 95 dec r25 1f0c: f1 f7 brne .-4 ; 0x1f0a 1f0e: 08 95 ret 00001f10 : "wdr\n" ); } void watchdogConfig(uint8_t x) { WDTCSR = _BV(WDCE) | _BV(WDE); 1f10: 98 e1 ldi r25, 0x18 ; 24 1f12: 91 bd out 0x21, r25 ; 33 WDTCSR = x; 1f14: 81 bd out 0x21, r24 ; 33 } 1f16: 08 95 ret 00001f18 : do getch(); while (--count); verifySpace(); } void verifySpace() { if (getch() != CRC_EOP) { 1f18: e8 df rcall .-48 ; 0x1eea 1f1a: 80 32 cpi r24, 0x20 ; 32 1f1c: 19 f0 breq .+6 ; 0x1f24 watchdogConfig(WATCHDOG_16MS); // shorten WD timeout 1f1e: 88 e0 ldi r24, 0x08 ; 8 1f20: f7 df rcall .-18 ; 0x1f10 1f22: ff cf rjmp .-2 ; 0x1f22 while (1) // and busy-loop so that WD causes ; // a reset and app start. } putch(STK_INSYNC); 1f24: 84 e1 ldi r24, 0x14 ; 20 } 1f26: d2 cf rjmp .-92 ; 0x1ecc 00001f28 : ::[count] "M" (UART_B_VALUE) ); } #endif void getNch(uint8_t count) { 1f28: 1f 93 push r17 1f2a: 18 2f mov r17, r24 do getch(); while (--count); 1f2c: de df rcall .-68 ; 0x1eea 1f2e: 11 50 subi r17, 0x01 ; 1 1f30: e9 f7 brne .-6 ; 0x1f2c verifySpace(); 1f32: f2 df rcall .-28 ; 0x1f18 } 1f34: 1f 91 pop r17 1f36: 08 95 ret 00001f38 : WDTCSR = _BV(WDCE) | _BV(WDE); WDTCSR = x; } void appStart() { watchdogConfig(WATCHDOG_OFF); 1f38: 80 e0 ldi r24, 0x00 ; 0 1f3a: ea df rcall .-44 ; 0x1f10 __asm__ __volatile__ ( 1f3c: e4 e0 ldi r30, 0x04 ; 4 1f3e: ff 27 eor r31, r31 1f40: 09 94 ijmp