2003-01-05 Marcel Telka <marcel@telka.sk>
* include/register.h (register_inc, register_dec, register_shift_rigth, register_shift_left): Added new functions. * src/tap/register.c (register_inc, register_dec, register_shift_rigth, register_shift_left): Ditto. * src/Makefile.am: Added discovery.c file. * src/discovery.c: Added new file with discovery() implementation. * src/help.c (help): Added help for 'discovery' command. * src/jtag.c (main): Added 'discovery' command. * src/tap/tap.c (write_command): Removed unused function. git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@291 b68d4a1b-bc3d-0410-92ed-d4ac073336b7master
Marcel Telka
22 years ago
parent
cbd17308c5
commit
0ac86537b0
@ -0,0 +1,207 @@
|
||||
/*
|
||||
* $Id$
|
||||
*
|
||||
* Copyright (C) 2003 ETC s.r.o.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License
|
||||
* as published by the Free Software Foundation; either version 2
|
||||
* of the License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
|
||||
* 02111-1307, USA.
|
||||
*
|
||||
* Written by Marcel Telka <marcel@telka.sk>, 2003.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include <config.h>
|
||||
#endif
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include "ctrl.h"
|
||||
#include "tap.h"
|
||||
|
||||
#define DETECT_PATTERN_SIZE 8
|
||||
#define MAX_REGISTER_LENGTH 1024
|
||||
#define TEST_COUNT 5
|
||||
#define TEST_THRESHOLD 100 /* in % */
|
||||
|
||||
static int
|
||||
detect_register_size( FILE *f )
|
||||
{
|
||||
int len;
|
||||
tap_register *rz;
|
||||
tap_register *rout;
|
||||
tap_register *rpat;
|
||||
|
||||
for (len = 1; len < MAX_REGISTER_LENGTH; len++) {
|
||||
int p;
|
||||
int ok = 0;
|
||||
|
||||
fprintf( f, "\tTesting register length: %d\n", len );
|
||||
|
||||
rz = register_fill( register_alloc( len ), 0 );
|
||||
rout = register_alloc( DETECT_PATTERN_SIZE + len );
|
||||
rpat = register_inc( register_fill( register_alloc( DETECT_PATTERN_SIZE + len ), 0 ) );
|
||||
|
||||
for (p = 1; p < (1 << DETECT_PATTERN_SIZE); p++) {
|
||||
int i;
|
||||
const char *s;
|
||||
ok = 0;
|
||||
|
||||
s = register_get_string( rpat );
|
||||
while (*s)
|
||||
s++;
|
||||
fprintf( f, "\t\tPattern: %s, ", s - DETECT_PATTERN_SIZE );
|
||||
|
||||
for (i = 0; i < TEST_COUNT; i++) {
|
||||
tap_shift_register( rz, NULL, 0 );
|
||||
tap_shift_register( rpat, rout, 0 );
|
||||
|
||||
register_shift_right( rout, len );
|
||||
|
||||
if (register_compare( rpat, rout ) == 0)
|
||||
ok++;
|
||||
}
|
||||
fprintf( f, "%d %%\n", 100 * ok / TEST_COUNT );
|
||||
if (100 * ok / TEST_COUNT < TEST_THRESHOLD) {
|
||||
ok = 0;
|
||||
break;
|
||||
}
|
||||
|
||||
register_inc( rpat );
|
||||
}
|
||||
|
||||
register_free( rz );
|
||||
register_free( rout );
|
||||
register_free( rpat );
|
||||
|
||||
if (ok)
|
||||
return len;
|
||||
}
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
static void
|
||||
jtag_reset( void )
|
||||
{
|
||||
tap_set_trst( 0 );
|
||||
sleep( 1 );
|
||||
tap_set_trst( 1 );
|
||||
sleep( 1 );
|
||||
|
||||
tap_reset();
|
||||
}
|
||||
|
||||
#define MAX_CHAIN_LENGTH 128
|
||||
|
||||
void
|
||||
discovery( const char *filename )
|
||||
{
|
||||
int i;
|
||||
int irlen;
|
||||
tap_register *ir;
|
||||
tap_register *irz;
|
||||
FILE *f = NULL;
|
||||
|
||||
tap_register *id = register_alloc( 32 );
|
||||
tap_register *zeros = register_fill( register_alloc( 32 ), 0 );
|
||||
tap_register *ones = register_fill( register_alloc( 32 ), 1 );
|
||||
|
||||
if (id && zeros && ones) {
|
||||
f = fopen( filename, "w" );
|
||||
if (!f)
|
||||
printf( "Error: Unable to create file '%s'.\n", filename );
|
||||
} else
|
||||
printf( "Error: Out of memory!\n" );
|
||||
|
||||
if (!id || !zeros || !ones || !f) {
|
||||
register_free( id );
|
||||
register_free( zeros );
|
||||
register_free( ones );
|
||||
return;
|
||||
}
|
||||
|
||||
printf( "Detecting JTAG chain length:\n" );
|
||||
fprintf( f, "Detecting JTAG chain length:\n" );
|
||||
|
||||
jtag_reset();
|
||||
|
||||
tap_capture_dr();
|
||||
for (i = 0; i < MAX_CHAIN_LENGTH; i++) {
|
||||
tap_shift_register( zeros, id, 0 );
|
||||
if (!register_compare( id, zeros ))
|
||||
break; /* end of chain */
|
||||
|
||||
if (!register_compare( ones, id )) {
|
||||
printf( "bad JTAG connection (TDO is 1)\n" );
|
||||
fprintf( f, "bad JTAG connection (TDO is 1)\n" );
|
||||
return; /* FIXME: memory leak */
|
||||
}
|
||||
|
||||
printf( "ID[%d]: %s\n", i, register_get_string( id ) );
|
||||
fprintf( f, "ID[%d]: %s\n", i, register_get_string( id ) );
|
||||
}
|
||||
|
||||
if (i == MAX_CHAIN_LENGTH) {
|
||||
printf( "Warning: Maximum internal JTAG chain length exceeded!\n" );
|
||||
fprintf( f, "Warning: Maximum internal JTAG chain length exceeded!\n" );
|
||||
} else {
|
||||
printf( "JTAG chain length is %d\n", i );
|
||||
fprintf( f, "JTAG chain length is %d\n", i );
|
||||
}
|
||||
|
||||
/* detecting IR size */
|
||||
jtag_reset();
|
||||
|
||||
printf( "Detecting IR size...\n" );
|
||||
fprintf( f, "Detecting IR size:\n" );
|
||||
|
||||
tap_capture_ir();
|
||||
irlen = detect_register_size( f );
|
||||
|
||||
printf( "IR length is %d\n\n", irlen );
|
||||
fprintf( f, "IR length is %d\n\n", irlen );
|
||||
|
||||
ir = register_fill( register_alloc( irlen ), 0 );
|
||||
irz = register_duplicate( ir );
|
||||
/* TODO: test for out of memory */
|
||||
for (;;) {
|
||||
int rs;
|
||||
|
||||
jtag_reset();
|
||||
|
||||
tap_capture_ir();
|
||||
tap_shift_register( ir, NULL, 1 );
|
||||
|
||||
printf( "Detecting DR size for IR %s ...\n", register_get_string( ir ) );
|
||||
fprintf( f, "Detecting DR size for IR %s:\n", register_get_string( ir ) );
|
||||
|
||||
tap_capture_dr();
|
||||
rs = detect_register_size( f );
|
||||
|
||||
printf( "DR length for IR %s is %d\n\n", register_get_string( ir ), rs );
|
||||
fprintf( f, "DR length for IR %s is %d\n\n", register_get_string( ir ), rs );
|
||||
|
||||
register_inc( ir );
|
||||
if (register_compare( ir, irz ) == 0)
|
||||
break;
|
||||
}
|
||||
register_free( ir );
|
||||
register_free( irz );
|
||||
|
||||
fclose( f );
|
||||
}
|
||||
Loading…
Reference in New Issue