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* jtag3.c (jtag3_read_byte, jtag3_write_byte): Remove the 

m->offset from addr, JTAGICE3 doesn't need it anymore (similar
to JTAGICEmkII with 7+ firmware)
* jtag3.c (jtag3_read_byte): Allow for full-page reads of
EEPROM also for Xmega and debugWIRE, allow for signature
read in debugWIRE




git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1117 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
joerg_wunsch 2012-11-30 12:51:07 +00:00
parent d8ad0fdb28
commit 4e0801803f
2 changed files with 38 additions and 35 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2012-11-30 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
* jtag3.c (jtag3_read_byte, jtag3_write_byte): Remove the
m->offset from addr, JTAGICE3 doesn't need it anymore (similar
to JTAGICEmkII with 7+ firmware)
* jtag3.c (jtag3_read_byte): Allow for full-page reads of
EEPROM also for Xmega and debugWIRE, allow for signature
read in debugWIRE
2012-11-30 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
* jtag3_private.h: Add two more error detail codes I stumbled

64
jtag3.c
View File

@ -1474,7 +1474,6 @@ static int jtag3_read_byte(PROGRAMMER * pgm, AVRPART * p, AVRMEM * mem,
cmd[1] = CMD3_READ_MEMORY;
cmd[2] = 0;
addr += mem->offset;
cmd[3] = ( p->flags & AVRPART_HAS_PDI ) ? MTYPE_FLASH : MTYPE_FLASH_PAGE;
if (strcmp(mem->desc, "flash") == 0 ||
strcmp(mem->desc, "application") == 0 ||
@ -1486,15 +1485,14 @@ static int jtag3_read_byte(PROGRAMMER * pgm, AVRPART * p, AVRMEM * mem,
cache_ptr = PDATA(pgm)->flash_pagecache;
} else if (strcmp(mem->desc, "eeprom") == 0) {
if ( (pgm->flag & PGM_FL_IS_DW) || ( p->flags & AVRPART_HAS_PDI ) ) {
/* debugWire cannot use page access for EEPROM */
cmd[3] = MTYPE_EEPROM;
} else {
cmd[3] = MTYPE_EEPROM_PAGE;
pagesize = mem->page_size;
paddr = addr & ~(pagesize - 1);
paddr_ptr = &PDATA(pgm)->eeprom_pageaddr;
cache_ptr = PDATA(pgm)->eeprom_pagecache;
}
pagesize = mem->page_size;
paddr = addr & ~(pagesize - 1);
paddr_ptr = &PDATA(pgm)->eeprom_pageaddr;
cache_ptr = PDATA(pgm)->eeprom_pagecache;
} else if (strcmp(mem->desc, "lfuse") == 0) {
cmd[3] = MTYPE_FUSE_BITS;
addr = 0;
@ -1525,38 +1523,36 @@ static int jtag3_read_byte(PROGRAMMER * pgm, AVRPART * p, AVRMEM * mem,
if (pgm->flag & PGM_FL_IS_DW)
unsupp = 1;
} else if (strcmp(mem->desc, "signature") == 0) {
static unsigned char signature_cache[2];
cmd[3] = MTYPE_SIGN_JTAG;
if (pgm->flag & PGM_FL_IS_DW) {
#if 0
/*
* In debugWire mode, there is no accessible memory area to read
* the signature from, but the essential two bytes can be read
* as a parameter from the ICE.
*/
unsigned char parm[4];
/*
* dW can read out the signature on JTAGICE3, but only allows
* for a full three-byte read. We cache them in a local
* variable to avoid multiple reads. This optimization does not
* harm for other connection types either.
*/
u32_to_b4(cmd + 8, 3);
u32_to_b4(cmd + 4, 0);
switch (addr) {
case 0:
*value = 0x1E; /* Atmel vendor ID */
break;
case 1:
case 2:
if (jtag3_getparm(pgm, PAR_TARGET_SIGNATURE, parm) < 0)
return -1;
*value = parm[2 - addr];
break;
default:
fprintf(stderr, "%s: illegal address %lu for signature memory\n",
progname, addr);
if (addr == 0) {
if ((status = jtag3_command(pgm, cmd, 12, &resp, "read memory")) < 0)
return -1;
}
return 0;
#endif
}
signature_cache[0] = resp[4];
signature_cache[1] = resp[5];
*value = resp[3];
free(resp);
return 0;
} else if (addr <= 2) {
*value = signature_cache[addr - 1];
return 0;
} else {
/* should not happen */
fprintf(stderr, "address out of range for signature memory: %u\n", addr);
return -1;
}
}
/*
@ -1623,8 +1619,6 @@ static int jtag3_write_byte(PROGRAMMER * pgm, AVRPART * p, AVRMEM * mem,
fprintf(stderr, "%s: jtag3_write_byte(.., %s, 0x%lx, ...)\n",
progname, mem->desc, addr);
addr += mem->offset;
cmd[0] = SCOPE_AVR;
cmd[1] = CMD3_WRITE_MEMORY;
cmd[2] = 0;