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Remove the erase cycle counter (options -y / -Y). 

git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1203 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Joerg Wunsch 2013-09-03 20:13:37 +00:00
parent 770d26689b
commit 8ed6920948
7 changed files with 15 additions and 127 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2013-09-03 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
* avrdude.h: Remove the erase cycle counter (options -y / -Y).
* avr.c: (Dito.)
* main.c: (Dito.)
* avrdude.1: Undocument -y / -Y.
* doc/avrdude.texi: (Dito.)
2013-09-03 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
bug #39691 Buffer overrun when reading EEPROM byte with JTAGICE3

4
NEWS
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@ -101,8 +101,8 @@ Current:
everything mentioned in the file (even in case the file has
large 0xFF blocks).
* The EEPROM contents for the cyclecounter is only read when
explicitly requested by a -y or -Y option.
* The eraes cycle counter (formerly options -y / -Y) has been
removed.
* The -U option now accepts ELF files as input files, and extracts
the appropriate section contents that matches the requested memory

21
avr.c
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@ -1172,31 +1172,10 @@ int avr_put_cycle_count(PROGRAMMER * pgm, AVRPART * p, int cycles)
int avr_chip_erase(PROGRAMMER * pgm, AVRPART * p)
{
int cycles;
int rc;
if (do_cycles) {
rc = avr_get_cycle_count(pgm, p, &cycles);
/*
* Don't update the cycle counter, if read failed
*/
if(rc != 0) {
do_cycles = 0;
}
}
rc = pgm->chip_erase(pgm, p);
/*
* Don't update the cycle counter, if erase failed
*/
if (do_cycles && (rc == 0)) {
cycles++;
fprintf(stderr, "%s: erase-rewrite cycle count is now %d\n",
progname, cycles);
avr_put_cycle_count(pgm, p, cycles);
}
return rc;
}

28
avrdude.1
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@ -18,7 +18,7 @@
.\"
.\" $Id$
.\"
.Dd DATE May 16, 2013
.Dd DATE September 3, 2013
.Os
.Dt AVRDUDE 1
.Sh NAME
@ -50,8 +50,6 @@
.Op Fl v
.Op Fl x Ar extended_param
.Op Fl V
.Op Fl y
.Op Fl Y
.Sh DESCRIPTION
.Nm Avrdude
is a program for downloading code and data to Atmel AVR
@ -673,30 +671,6 @@ to the chosen programmer implementation as an extended parameter.
The interpretation of the extended parameter depends on the
programmer itself.
See below for a list of programmers accepting extended parameters.
.It Fl y
Tells
.Nm
to use the last four bytes of the connected parts' EEPROM memory to
track the number of times the device has been erased. When this
option is used and the
.Fl e
flag is specified to generate a chip erase, the previous counter will
be saved before the chip erase, it is then incremented, and written
back after the erase cycle completes. Presumably, the device would
only be erased just before being programmed, and thus, this can be
utilized to give an indication of how many erase-rewrite cycles the
part has undergone. Since the FLASH memory can only endure a finite
number of erase-rewrite cycles, one can use this option to track when
a part is nearing the limit. The typical limit for Atmel AVR FLASH is
1000 cycles. Of course, if the application needs the last four bytes
of EEPROM memory, this option should not be used.
.It Fl Y Ar cycles
Instructs
.Nm
to initialize the erase-rewrite cycle counter residing at the last four
bytes of EEPROM memory to the specified value. If the application
needs the last four bytes of EEPROM memory, this option should not be
used.
.El
.Ss Terminal mode
In this mode,

1
avrdude.h
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@ -24,7 +24,6 @@
extern char * progname; /* name of program, for messages */
extern char progbuf[]; /* spaces same length as progname */
extern int do_cycles; /* track erase-rewrite cycles (-y) */
extern int ovsigck; /* override signature check (-F) */
extern int verbose; /* verbosity level (-v, -vv, ...) */
extern int quell_progress; /* quiteness level (-q, -qq) */

21
doc/avrdude.texi
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@ -709,27 +709,6 @@ an extended parameter. The interpretation of the extended parameter
depends on the programmer itself. See below for a list of programmers
accepting extended parameters.
@item -y
Tells AVRDUDE to use the last four bytes of the connected parts' EEPROM
memory to track the number of times the device has been erased. When
this option is used and the @option{-e} flag is specified to generate a
chip erase, the previous counter will be saved before the chip erase, it
is then incremented, and written back after the erase cycle completes.
Presumably, the device would only be erased just before being
programmed, and thus, this can be utilized to give an indication of how
many erase-rewrite cycles the part has undergone. Since the FLASH
memory can only endure a finite number of erase-rewrite cycles, one can
use this option to track when a part is nearing the limit. The typical
limit for Atmel AVR FLASH is 1000 cycles. Of course, if the
application needs the last four bytes of EEPROM memory, this option
should not be used.
@item -Y @var{cycles}
Instructs AVRDUDE to initialize the erase-rewrite cycle counter residing
at the last four bytes of EEPROM memory to the specified value. If the
application needs the last four bytes of EEPROM memory, this option
should not be used.
@end table
@page

59
main.c
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@ -82,7 +82,6 @@ static PROGRAMMER * pgm;
/*
* global options
*/
int do_cycles; /* track erase-rewrite cycles */
int verbose; /* verbose output */
int quell_progress; /* un-verebose output */
int ovsigck; /* 1=override sig check, 0=don't */
@ -323,8 +322,6 @@ int main(int argc, char * argv [])
char * partdesc; /* part id */
char sys_config[PATH_MAX]; /* system wide config file */
char usr_config[PATH_MAX]; /* per-user config file */
int cycles; /* erase-rewrite cycles */
int set_cycles; /* value to set the erase-rewrite cycles to */
char * e; /* for strtol() error checking */
int baudrate; /* override default programmer baud rate */
double bitclock; /* Specify programmer bit clock (JTAG ICE) */
@ -405,8 +402,6 @@ int main(int argc, char * argv [])
pgm = NULL;
programmer = default_programmer;
verbose = 0;
do_cycles = 0;
set_cycles = -1;
baudrate = 0;
bitclock = 0.0;
ispdelay = 0;
@ -588,17 +583,13 @@ int main(int argc, char * argv [])
break;
case 'y':
do_cycles = 1;
fprintf(stderr, "%s: erase cycle counter no longer supported\n",
progname);
break;
case 'Y':
set_cycles = strtol(optarg, &e, 0);
if ((e == optarg) || (*e != 0)) {
fprintf(stderr, "%s: invalid cycle count '%s'\n",
progname, optarg);
exit(1);
}
do_cycles = 1;
fprintf(stderr, "%s: erase cycle counter no longer supported\n",
progname);
break;
case '?': /* help */
@ -1176,48 +1167,6 @@ int main(int argc, char * argv [])
}
}
/*
* Display cycle count, if and only if it is not set later on.
*
* The cycle count will be displayed anytime it will be changed later.
*/
if (init_ok && !(p->flags & AVRPART_AVR32) && do_cycles) {
/*
* see if the cycle count in the last four bytes of eeprom seems
* reasonable
*/
rc = avr_get_cycle_count(pgm, p, &cycles);
if (quell_progress < 2) {
if ((rc >= 0) && (cycles != 0)) {
fprintf(stderr,
"%s: current erase-rewrite cycle count is %d\n",
progname, cycles);
}
}
}
if (init_ok && set_cycles != -1 && !(p->flags & AVRPART_AVR32)) {
rc = avr_get_cycle_count(pgm, p, &cycles);
if (rc == 0) {
/*
* only attempt to update the cycle counter if we can actually
* read the old value
*/
cycles = set_cycles;
if (quell_progress < 2) {
fprintf(stderr, "%s: setting erase-rewrite cycle count to %d\n",
progname, cycles);
}
rc = avr_put_cycle_count(pgm, p, cycles);
if (rc < 0) {
fprintf(stderr,
"%s: WARNING: failed to update the erase-rewrite cycle "
"counter\n",
progname);
}
}
}
if (init_ok && erase) {
/*
* erase the chip's flash and eeprom memories, this is required