-static void leaveBootloader() __attribute__((__noreturn__));
-
#include "bootloaderconfig.h"
#include "usbdrv/usbdrv.c"
0x1e, 0x93, 0x0F, 0
#elif defined (__AVR_ATmega164A__)
0x1e, 0x94, 0x0f, 0
-#elif defined (__AVR_ATmega164P__)
+#elif defined (__AVR_ATmega164P__) || defined (__AVR_ATmega164PA__)
0x1e, 0x94, 0x0a, 0
#elif defined (__AVR_ATmega168__) || defined (__AVR_ATmega168A__) || defined (__AVR_ATmega168P__)
0x1e, 0x94, 0x06, 0
/* ------------------------------------------------------------------------ */
+#if (USE_BOOTUP_CLEARRAM)
+/*
+* Under normal circumstances, RESET will not clear contents of RAM.
+* As always, if you want it done - do it yourself...
+*/
+void __attribute__ ((naked)) __attribute__ ((section (".init3"))) __clearram(void);
+void __clearram(void) {
+ extern size_t __bss_end;
+ asm volatile (
+ "__clearram:\n\t"
+ "ldi r29, %[ramendhi]\n\t"
+ "ldi r28, %[ramendlo]\n\t"
+ "__clearramloop%=:\n\t"
+ "st -Y , __zero_reg__\n\t"
+ "cp r28, %A[bssend]\n\t"
+ "cpc r29, %B[bssend]\n\t"
+ "brne __clearramloop%=\n\t"
+ :
+ : [ramendhi] "M" (((RAMEND+1)>>8) & 0xff),
+ [ramendlo] "M" (((RAMEND+1)>>0) & 0xff),
+ [bssend] "r" (&__bss_end)
+ : "memory"
+ );
+}
+#endif
+
+#if (!USE_EXCESSIVE_ASSEMBLER) || (!(defined (__AVR_ATmega8__) || defined (__AVR_ATmega8A__) || defined (__AVR_ATmega8HVA__)))
static void (*nullVector)(void) __attribute__((__noreturn__));
+#endif
-static void leaveBootloader()
+static void __attribute__((__noreturn__)) leaveBootloader()
{
+#if (USE_EXCESSIVE_ASSEMBLER) && (defined (__AVR_ATmega8__) || defined (__AVR_ATmega8A__) || defined (__AVR_ATmega8HVA__))
+asm volatile (
+ "cli\n\t"
+ "clr r30\n\t"
+ "sbi %[usbddr], %[usbminus]\n\t"
+ "cbi %[port], %[bit]\n\t"
+ "out %[usbintrenab], r30\n\t"
+ "out %[usbintrcfg], r30\n\t"
+ "ldi r31, %[ivce]\n\t"
+ "out %[mygicr], r31\n\t"
+ "out %[mygicr], r30\n\t"
+ "clr r31\n\t"
+ "icall\n\t"
+ :
+ : [port] "I" (_SFR_IO_ADDR(PIN_PORT(JUMPER_PORT))),
+ [bit] "I" (PIN(JUMPER_PORT, JUMPER_BIT)),
+ [usbintrenab] "I" (_SFR_IO_ADDR(USB_INTR_ENABLE)),
+ [usbintrcfg] "I" (_SFR_IO_ADDR(USB_INTR_CFG)),
+ [usbddr] "I" (_SFR_IO_ADDR(USBDDR)),
+ [usbminus] "I" (USBMINUS),
+ [mygicr] "I" (_SFR_IO_ADDR(GICR)),
+ [ivce] "I" (1<<IVCE)
+);
+/* TODO: compiler will put an unnecessary "ret" at this end ! */
+#else
DBG1(0x01, 0, 0);
cli();
usbDeviceDisconnect();
* handled correctly by the assembler.
*/
nullVector();
+#endif
}
/* ------------------------------------------------------------------------ */
-uchar usbFunctionSetup(uchar data[8])
-{
-usbRequest_t *rq = (void *)data;
-uchar len = 0;
-static uchar replyBuffer[4];
- usbMsgPtr = replyBuffer;
- if(rq->bRequest == USBASP_FUNC_TRANSMIT){ /* emulate parts of ISP protocol */
- uchar rval = 0;
- usbWord_t address;
- address.bytes[1] = rq->wValue.bytes[1];
- address.bytes[0] = rq->wIndex.bytes[0];
- if(rq->wValue.bytes[0] == 0x30){ /* read signature */
- rval = rq->wIndex.bytes[0] & 3;
- rval = signatureBytes[rval];
+uchar usbFunctionSetup_USBASP_FUNC_TRANSMIT(usbRequest_t *rq) {
+ uchar rval = 0;
+ usbWord_t address;
+ address.bytes[1] = rq->wValue.bytes[1];
+ address.bytes[0] = rq->wIndex.bytes[0];
+
+ if(rq->wValue.bytes[0] == 0x30){ /* read signature */
+ rval = rq->wIndex.bytes[0] & 3;
+ rval = signatureBytes[rval];
#if HAVE_READ_LOCK_FUSE
#if defined (__AVR_ATmega8__) || defined (__AVR_ATmega8A__) || defined (__AVR_ATmega32__)
- }else if(rq->wValue.bytes[0] == 0x58 && rq->wValue.bytes[1] == 0x00){ /* read lock bits */
- rval = boot_lock_fuse_bits_get(GET_LOCK_BITS);
- }else if(rq->wValue.bytes[0] == 0x50 && rq->wValue.bytes[1] == 0x00){ /* read lfuse bits */
- rval = boot_lock_fuse_bits_get(GET_LOW_FUSE_BITS);
- }else if(rq->wValue.bytes[0] == 0x58 && rq->wValue.bytes[1] == 0x08){ /* read hfuse bits */
- rval = boot_lock_fuse_bits_get(GET_HIGH_FUSE_BITS);
+ }else if(rq->wValue.bytes[0] == 0x58 && rq->wValue.bytes[1] == 0x00){ /* read lock bits */
+ rval = boot_lock_fuse_bits_get(GET_LOCK_BITS);
+ }else if(rq->wValue.bytes[0] == 0x50 && rq->wValue.bytes[1] == 0x00){ /* read lfuse bits */
+ rval = boot_lock_fuse_bits_get(GET_LOW_FUSE_BITS);
+ }else if(rq->wValue.bytes[0] == 0x58 && rq->wValue.bytes[1] == 0x08){ /* read hfuse bits */
+ rval = boot_lock_fuse_bits_get(GET_HIGH_FUSE_BITS);
#elif defined (__AVR_ATmega48__) || defined (__AVR_ATmega48A__) || defined (__AVR_ATmega48P__) || defined (__AVR_ATmega48PA__) || \
- defined (__AVR_ATmega88__) || defined (__AVR_ATmega88A__) || defined (__AVR_ATmega88P__) || defined (__AVR_ATmega88PA__) || \
- defined (__AVR_ATmega164A__) || defined (__AVR_ATmega164P__) || \
- defined (__AVR_ATmega168__) || defined (__AVR_ATmega168A__) || defined (__AVR_ATmega168P__) || defined (__AVR_ATmega168PA__) || \
- defined (__AVR_ATmega324A__) || defined (__AVR_ATmega324P__) || \
- defined (__AVR_ATmega328__) || defined (__AVR_ATmega328P__) || \
- defined (__AVR_ATmega644__) || defined (__AVR_ATmega644A__) || defined (__AVR_ATmega644P__) || defined (__AVR_ATmega644PA__) || \
- defined (__AVR_ATmega128__) || \
- defined (__AVR_ATmega1284__) || defined (__AVR_ATmega1284P__)
- }else if(rq->wValue.bytes[0] == 0x58 && rq->wValue.bytes[1] == 0x00){ /* read lock bits */
- rval = boot_lock_fuse_bits_get(GET_LOCK_BITS);
- }else if(rq->wValue.bytes[0] == 0x50 && rq->wValue.bytes[1] == 0x00){ /* read lfuse bits */
- rval = boot_lock_fuse_bits_get(GET_LOW_FUSE_BITS);
- }else if(rq->wValue.bytes[0] == 0x58 && rq->wValue.bytes[1] == 0x08){ /* read hfuse bits */
- rval = boot_lock_fuse_bits_get(GET_HIGH_FUSE_BITS);
- }else if(rq->wValue.bytes[0] == 0x50 && rq->wValue.bytes[1] == 0x08){ /* read efuse bits */
- rval = boot_lock_fuse_bits_get(GET_EXTENDED_FUSE_BITS );
+defined (__AVR_ATmega88__) || defined (__AVR_ATmega88A__) || defined (__AVR_ATmega88P__) || defined (__AVR_ATmega88PA__) || \
+defined (__AVR_ATmega164A__) || defined (__AVR_ATmega164P__) || \
+defined (__AVR_ATmega168__) || defined (__AVR_ATmega168A__) || defined (__AVR_ATmega168P__) || defined (__AVR_ATmega168PA__) || \
+defined (__AVR_ATmega324A__) || defined (__AVR_ATmega324P__) || \
+defined (__AVR_ATmega328__) || defined (__AVR_ATmega328P__) || \
+defined (__AVR_ATmega644__) || defined (__AVR_ATmega644A__) || defined (__AVR_ATmega644P__) || defined (__AVR_ATmega644PA__) || \
+defined (__AVR_ATmega128__) || \
+defined (__AVR_ATmega1284__) || defined (__AVR_ATmega1284P__)
+ }else if(rq->wValue.bytes[0] == 0x58 && rq->wValue.bytes[1] == 0x00){ /* read lock bits */
+ rval = boot_lock_fuse_bits_get(GET_LOCK_BITS);
+ }else if(rq->wValue.bytes[0] == 0x50 && rq->wValue.bytes[1] == 0x00){ /* read lfuse bits */
+ rval = boot_lock_fuse_bits_get(GET_LOW_FUSE_BITS);
+ }else if(rq->wValue.bytes[0] == 0x58 && rq->wValue.bytes[1] == 0x08){ /* read hfuse bits */
+ rval = boot_lock_fuse_bits_get(GET_HIGH_FUSE_BITS);
+ }else if(rq->wValue.bytes[0] == 0x50 && rq->wValue.bytes[1] == 0x08){ /* read efuse bits */
+ rval = boot_lock_fuse_bits_get(GET_EXTENDED_FUSE_BITS );
#else
- #warning "HAVE_READ_LOCK_FUSE is activated but MCU unknown -> will not support this feature"
+ #warning "HAVE_READ_LOCK_FUSE is activated but MCU unknown -> will not support this feature"
#endif
#endif
#if HAVE_FLASH_BYTE_READACCESS
- }else if(rq->wValue.bytes[0] == 0x20){ /* read FLASH low byte */
+ }else if(rq->wValue.bytes[0] == 0x20){ /* read FLASH low byte */
#if ((FLASHEND) > 65535)
- rval = pgm_read_byte_far((((addr_t)address.word)<<1)+0);
+ rval = pgm_read_byte_far((((addr_t)address.word)<<1)+0);
#else
- rval = pgm_read_byte((((addr_t)address.word)<<1)+0);
+ rval = pgm_read_byte((((addr_t)address.word)<<1)+0);
#endif
- }else if(rq->wValue.bytes[0] == 0x28){ /* read FLASH high byte */
+ }else if(rq->wValue.bytes[0] == 0x28){ /* read FLASH high byte */
#if ((FLASHEND) > 65535)
- rval = pgm_read_byte_far((((addr_t)address.word)<<1)+1);
+ rval = pgm_read_byte_far((((addr_t)address.word)<<1)+1);
#else
- rval = pgm_read_byte((((addr_t)address.word)<<1)+1);
+ rval = pgm_read_byte((((addr_t)address.word)<<1)+1);
#endif
#endif
#if HAVE_EEPROM_BYTE_ACCESS
- }else if(rq->wValue.bytes[0] == 0xa0){ /* read EEPROM byte */
- rval = eeprom_read_byte((void *)address.word);
- }else if(rq->wValue.bytes[0] == 0xc0){ /* write EEPROM byte */
- eeprom_write_byte((void *)address.word, rq->wIndex.bytes[1]);
+ }else if(rq->wValue.bytes[0] == 0xa0){ /* read EEPROM byte */
+ rval = eeprom_read_byte((void *)address.word);
+ }else if(rq->wValue.bytes[0] == 0xc0){ /* write EEPROM byte */
+ eeprom_write_byte((void *)address.word, rq->wIndex.bytes[1]);
#endif
#if HAVE_CHIP_ERASE
- }else if(rq->wValue.bytes[0] == 0xac && rq->wValue.bytes[1] == 0x80){ /* chip erase */
- addr_t addr;
+ }else if(rq->wValue.bytes[0] == 0xac && rq->wValue.bytes[1] == 0x80){ /* chip erase */
+ addr_t addr;
#if HAVE_BLB11_SOFTW_LOCKBIT
- for(addr = 0; addr < (addr_t)(BOOTLOADER_PAGEADDR) ; addr += SPM_PAGESIZE) {
+ for(addr = 0; addr < (addr_t)(BOOTLOADER_PAGEADDR) ; addr += SPM_PAGESIZE) {
#else
- for(addr = 0; addr <= (addr_t)(FLASHEND) ; addr += SPM_PAGESIZE) {
+ for(addr = 0; addr <= (addr_t)(FLASHEND) ; addr += SPM_PAGESIZE) {
#endif
- /* wait and erase page */
- DBG1(0x33, 0, 0);
+ /* wait and erase page */
+ DBG1(0x33, 0, 0);
# ifndef NO_FLASH_WRITE
- boot_spm_busy_wait();
- cli();
- boot_page_erase(addr);
- sei();
+ boot_spm_busy_wait();
+ cli();
+ boot_page_erase(addr);
+ sei();
# endif
- }
+ }
#endif
- }else{
- /* ignore all others, return default value == 0 */
- }
- replyBuffer[3] = rval;
+ }else{
+ /* ignore all others, return default value == 0 */
+ }
+
+ return rval;
+}
+
+
+uchar usbFunctionSetup(uchar data[8])
+{
+usbRequest_t *rq = (void *)data;
+uchar len = 0;
+static uchar replyBuffer[4];
+
+ usbMsgPtr = replyBuffer;
+ if(rq->bRequest == USBASP_FUNC_TRANSMIT){ /* emulate parts of ISP protocol */
+ replyBuffer[3] = usbFunctionSetup_USBASP_FUNC_TRANSMIT(rq);
len = 4;
}else if((rq->bRequest == USBASP_FUNC_ENABLEPROG) || (rq->bRequest == USBASP_FUNC_SETISPSCK)){
/* replyBuffer[0] = 0; is never touched and thus always 0 which means success */
return len;
}
+#if (USE_EXCESSIVE_ASSEMBLER) && ((!HAVE_CHIP_ERASE) || (HAVE_ONDEMAND_PAGEERASE)) && (SPM_PAGESIZE <= 256) && (((BOOTLOADER_PAGEADDR>>0)&0xff) == 0)
+uchar usbFunctionWrite(uchar *data, uchar len)
+{
+uchar isLast;
+
+ DBG1(0x31, (void *)¤tAddress.l, 4);
+ if(len > bytesRemaining)
+ len = bytesRemaining;
+ bytesRemaining -= len;
+ isLast = bytesRemaining == 0;
+ if(currentRequest >= USBASP_FUNC_READEEPROM){
+ uchar i;
+ for(i = 0; i < len; i++){
+ eeprom_write_byte((void *)(currentAddress.w[0]++), *data++);
+ }
+ }else{
+ asm volatile (
+ "sbrc %[len], 0\n\t"
+ "inc %[len]\n\t"
+"usbFunctionWrite_flashloop:\n\t"
+ "subi %[len], 2\n\t"
+ "brlo usbFunctionWrite_finished\n\t"
+
+#if HAVE_BLB11_SOFTW_LOCKBIT
+ "cpi r31, %[blsaddrhi]\n\t" /* accelerated BLB11_SOFTW_LOCKBIT check */
+ "brsh usbFunctionWrite_finished\n\t"
+// "brlo usbFunctionWrite_addrunlock_ok\n\t"
+// "brne usbFunctionWrite_finished\n\t"
+// "cpi r30, %[blsaddrlo]\n\t"
+// "brlo usbFunctionWrite_addrunlock_ok\n\t"
+// "rjmp usbFunctionWrite_finished\n\t"
+// "usbFunctionWrite_addrunlock_ok:\n\t"
+#endif
+ "rcall usbFunctionWrite_waitA\n\t"
+ "cli\n\t" /* r0 or r1 may be __zero_reg__ and may become dangerous nonzero within interrupts */
+ "ld r0, X+\n\t"
+ "ld r1, X+\n\t"
+
+ "ldi r18, %[pagfillval]\n\t"
+ "rcall usbFunctionWrite_saveflash\n\t" /* page fill */
+
+ "mov r18, r30\n\t"
+ "subi r18, 0xfe\n\t" /* add with 2 */
+ "andi r18, %[pagemask]\n\t"
+ "breq usbFunctionWrite_pageisfull\n\t"
+ "tst %[islast]\n\t"
+ "breq usbFunctionWrite_skippageisfull\n\t"
+ "tst %[isLastPage]\n\t"
+ "breq usbFunctionWrite_skippageisfull\n\t"
+ "cpi %[len], 0\n\t"
+ "brne usbFunctionWrite_skippageisfull\n\t"
+
+"usbFunctionWrite_pageisfull:\n\t" /* start writing the page */
+ "ldi r18, %[pageraseval]\n\t"
+ "rcall usbFunctionWrite_saveflash\n\t" /* page erase */
+ "rcall usbFunctionWrite_waitA\n\t"
+
+ "ldi r18, %[pagwriteval]\n\t"
+ "rcall usbFunctionWrite_saveflash\n\t" /* page write */
+ "rcall usbFunctionWrite_waitA\n\t"
+
+ "in __tmp_reg__, %[spmcr]\n\t"
+ "sbrs __tmp_reg__, %[rwwsbbit]\n\t"
+ "rjmp usbFunctionWrite_skippageisfull\n\t"
+ "ldi r18, %[rwwenrval]\n\t"
+ "rcall usbFunctionWrite_saveflash\n\t" /* reenable rww*/
+// "rcall usbFunctionWrite_waitA\n\t"
+
+
+"usbFunctionWrite_skippageisfull:\n\t"
+ "adiw r30, 0x2\n\t"
+ "rjmp usbFunctionWrite_flashloop\n\t"
+
+"usbFunctionWrite_saveflash:\n\t"
+ "cli\n\t"
+ "out %[spmcr], r18\n\t"
+ "spm\n\t"
+ "clr __zero_reg__\n\t" /* if r0 or r1 is __zero_reg__ it may have become inconsisten while page-fill */
+ "sei\n\t"
+ "ret\n\t"
+
+"usbFunctionWrite_waitA:\n\t"
+ "in __tmp_reg__, %[spmcr]\n\t"
+ "sbrc __tmp_reg__, %[spmenbit]\n\t"
+ "rjmp usbFunctionWrite_waitA\n\t"
+ "ret\n\t"
+
+"usbFunctionWrite_finished:\n\t"
+ : [addr] "+z" (currentAddress.l)
+
+ : [spmenbit] "I" (SPMEN),
+ [rwwsbbit] "I" (RWWSB),
+ [spmcr] "I" (_SFR_IO_ADDR(__SPM_REG)),
+ [pagfillval] "M" ((1<<SPMEN)),
+ [pageraseval] "M" ((1<<PGERS) | (1<<SPMEN)),
+ [pagwriteval] "M" ((1<<PGWRT) | (1<<SPMEN)),
+ [rwwenrval] "M" ((1<<RWWSRE) | (1<<SPMEN)),
+ [pagemask] "M" (SPM_PAGESIZE-1),
+#if HAVE_BLB11_SOFTW_LOCKBIT
+ [blsaddrhi] "M" ((uint8_t)((BOOTLOADER_PAGEADDR>>8)&0xff)),
+// [blsaddrlo] "M" ((uint8_t)((BOOTLOADER_PAGEADDR>>0)&0xff)),
+#endif
+ [islast] "r" (isLast),
+ [isLastPage] "r" (isLastPage),
+ [len] "d" (len),
+ [dataptr] "x" (data)
+
+ : "r0", "r1", "r18"
+ );
+ }
+ return isLast;
+}
+#else
uchar usbFunctionWrite(uchar *data, uchar len)
{
uchar i,isLast;
}
return isLast;
}
+#endif
uchar usbFunctionRead(uchar *data, uchar len)
{
sei();
}
-int __attribute__((noreturn)) main(void)
+int __attribute__((__noreturn__)) main(void)
{
/* initialize */
bootLoaderInit();
do{
usbPoll();
#if BOOTLOADER_CAN_EXIT
+#if USE_EXCESSIVE_ASSEMBLER
+asm volatile (
+ "cpi %[sil], 0x10\n\t"
+ "brlo main_stayinloader_smaller\n\t"
+ "sbic %[pin], %[bit]\n\t"
+ "subi %[sil], 0x10\n\t"
+ "rjmp main_stayinloader_finished\n\t"
+
+ "main_stayinloader_smaller:\n\t"
+ "cpi %[sil], 0x2\n\t"
+ "brlo main_stayinloader_finished\n\t"
+ "sbis %[pin], %[bit]\n\t"
+ "subi %[sil], 0x2\n\t"
+
+ "main_stayinloader_finished:\n\t"
+ : [sil] "+d" (stayinloader)
+ : [pin] "I" (_SFR_IO_ADDR(PIN_PIN(JUMPER_PORT))),
+ [bit] "I" (PIN(JUMPER_PORT, JUMPER_BIT))
+);
+#else
if (stayinloader >= 0x10) {
if (!bootLoaderCondition()) {
stayinloader-=0x10;
}
}
#endif
+#endif
#if BOOTLOADER_CAN_EXIT
}while (stayinloader); /* main event loop, if BOOTLOADER_CAN_EXIT*/
projects / pub / USBaspLoader.git / blobdiff