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* stk500v2.c: Use stk500isp_read_byte/stk500isp_write_byte for 

every byte-wide access (rather than JTAGICE3 only).  This finally
obsoletes the use of the prehistoric SPI_MULTI command where
AVRDUDE used to assemble all the low-level ISP stuff by itself.




git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1336 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Joerg Wunsch 2014-10-06 22:15:29 +00:00
parent 361e948a7a
commit b348d97620
3 changed files with 72 additions and 21 deletions
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7
ChangeLog
View File

@ -1,3 +1,10 @@
2014-10-06 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
* stk500v2.c: Use stk500isp_read_byte/stk500isp_write_byte for
every byte-wide access (rather than JTAGICE3 only). This finally
obsoletes the use of the prehistoric SPI_MULTI command where
AVRDUDE used to assemble all the low-level ISP stuff by itself.
2014-10-06 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
bug #22248: Read efuse error

9
NEWS
View File

@ -8,7 +8,14 @@ Approximate change log for AVRDUDE by version.
Current:
* Major changes compared to the previous version:
- ...
- The stk500v2 implementation now uses its own higher-level
command implementation for byte-wide access, rather than the
historic SPI_MULTI command where all the low-level ISP
implementation had to be assembled manually inside AVRDUDE. In
addition to the traditional STK500, this implementation is also
used by all the more modern Atmel tools (AVRISPmkII, JTAGICEmkII
in ISP mode, STK600 in ISP mode).
* New programmers supported:
- ...

77
stk500v2.c
View File

@ -1249,6 +1249,8 @@ static int stk500hvsp_program_enable(PROGRAMMER * pgm, AVRPART * p)
*/
static int stk500v2_initialize(PROGRAMMER * pgm, AVRPART * p)
{
LNODEID ln;
AVRMEM * m;
if ((PDATA(pgm)->pgmtype == PGMTYPE_STK600 ||
PDATA(pgm)->pgmtype == PGMTYPE_AVRISP_MKII ||
@ -1277,6 +1279,42 @@ static int stk500v2_initialize(PROGRAMMER * pgm, AVRPART * p)
stk600_setup_isp(pgm);
}
/*
* Examine the avrpart's memory definitions, and initialize the page
* caches. For devices/memory that are not page oriented, treat
* them as page size 1 for EEPROM, and 2 for flash.
*/
PDATA(pgm)->flash_pagesize = 2;
PDATA(pgm)->eeprom_pagesize = 1;
for (ln = lfirst(p->mem); ln; ln = lnext(ln)) {
m = ldata(ln);
if (strcmp(m->desc, "flash") == 0) {
if (m->page_size > 0) {
if (m->page_size > 256)
PDATA(pgm)->flash_pagesize = 256;
else
PDATA(pgm)->flash_pagesize = m->page_size;
}
} else if (strcmp(m->desc, "eeprom") == 0) {
if (m->page_size > 0)
PDATA(pgm)->eeprom_pagesize = m->page_size;
}
}
free(PDATA(pgm)->flash_pagecache);
free(PDATA(pgm)->eeprom_pagecache);
if ((PDATA(pgm)->flash_pagecache = malloc(PDATA(pgm)->flash_pagesize)) == NULL) {
avrdude_message(MSG_INFO, "%s: stk500v2_initialize(): Out of memory\n",
progname);
return -1;
}
if ((PDATA(pgm)->eeprom_pagecache = malloc(PDATA(pgm)->eeprom_pagesize)) == NULL) {
avrdude_message(MSG_INFO, "%s: stk500v2_initialize(): Out of memory\n",
progname);
free(PDATA(pgm)->flash_pagecache);
return -1;
}
PDATA(pgm)->flash_pageaddr = PDATA(pgm)->eeprom_pageaddr = (unsigned long)-1L;
if (p->flags & AVRPART_IS_AT90S1200) {
/*
* AT90S1200 needs a positive reset pulse after a chip erase.
@ -2143,20 +2181,19 @@ static int stk500isp_write_byte(PROGRAMMER * pgm, AVRPART * p, AVRMEM * mem,
}
/*
* We use paged writes for flash and EEPROM. As both, flash and
* EEPROM cells can only be programmed from `1' to `0' bits (even
* EEPROM does not support auto-erase in parallel mode), we just
* pre-fill the page cache with 0xff, so all those cells that are
* outside our current address will remain unaffected.
* We use paged writes for flash and EEPROM, reading back the
* current page first, modify the byte to write, and write out the
* entire page.
*/
memset(cache_ptr, 0xff, pagesize);
if (stk500v2_paged_load(pgm, p, mem, pagesize, paddr, pagesize) < 0)
return -1;
memcpy(cache_ptr, mem->buf + paddr, pagesize);
*paddr_ptr = paddr;
cache_ptr[addr & (pagesize - 1)] = data;
memcpy(mem->buf + paddr, cache_ptr, pagesize);
stk500v2_paged_write(pgm, p, mem, pagesize, addr, pagesize);
/* Invalidate the page cache. */
*paddr_ptr = (unsigned long)-1L;
stk500v2_paged_write(pgm, p, mem, pagesize, paddr, pagesize);
return 0;
}
@ -4284,8 +4321,8 @@ static void stk600_setup_isp(PROGRAMMER * pgm)
{
pgm->program_enable = stk500v2_program_enable;
pgm->disable = stk500v2_disable;
pgm->read_byte = avr_read_byte_default;
pgm->write_byte = avr_write_byte_default;
pgm->read_byte = stk500isp_read_byte;
pgm->write_byte = stk500isp_write_byte;
pgm->paged_load = stk500v2_paged_load;
pgm->paged_write = stk500v2_paged_write;
pgm->page_erase = stk500v2_page_erase;
@ -4310,8 +4347,8 @@ void stk500v2_initpgm(PROGRAMMER * pgm)
pgm->cmd = stk500v2_cmd;
pgm->open = stk500v2_open;
pgm->close = stk500v2_close;
pgm->read_byte = avr_read_byte_default;
pgm->write_byte = avr_write_byte_default;
pgm->read_byte = stk500isp_read_byte;
pgm->write_byte = stk500isp_write_byte;
/*
* optional functions
@ -4418,8 +4455,8 @@ void stk500v2_jtagmkII_initpgm(PROGRAMMER * pgm)
pgm->cmd = stk500v2_cmd;
pgm->open = stk500v2_jtagmkII_open;
pgm->close = stk500v2_jtagmkII_close;
pgm->read_byte = avr_read_byte_default;
pgm->write_byte = avr_write_byte_default;
pgm->read_byte = stk500isp_read_byte;
pgm->write_byte = stk500isp_write_byte;
/*
* optional functions
@ -4453,8 +4490,8 @@ void stk500v2_dragon_isp_initpgm(PROGRAMMER * pgm)
pgm->cmd = stk500v2_cmd;
pgm->open = stk500v2_dragon_isp_open;
pgm->close = stk500v2_jtagmkII_close;
pgm->read_byte = avr_read_byte_default;
pgm->write_byte = avr_write_byte_default;
pgm->read_byte = stk500isp_read_byte;
pgm->write_byte = stk500isp_write_byte;
/*
* optional functions
@ -4557,8 +4594,8 @@ void stk600_initpgm(PROGRAMMER * pgm)
pgm->cmd = stk500v2_cmd;
pgm->open = stk600_open;
pgm->close = stk500v2_close;
pgm->read_byte = avr_read_byte_default;
pgm->write_byte = avr_write_byte_default;
pgm->read_byte = stk500isp_read_byte;
pgm->write_byte = stk500isp_write_byte;
/*
* optional functions