#include "command.h"
#include "log.h"
-#include "stdlib.h"
-#include "string.h"
+#include <stdlib.h>
+#include <string.h>
#include <unistd.h>
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
/* note that this is not marked as static as it must be available from outside jtag.c for those
that implement the jtag_xxx() minidriver layer
int jtag_verify_capture_ir = 1;
/* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
-int jtag_nsrst_delay = 0; /* default to no nSRST delay */
-int jtag_ntrst_delay = 0; /* default to no nTRST delay */
+static int jtag_nsrst_delay = 0; /* default to no nSRST delay */
+static int jtag_ntrst_delay = 0; /* default to no nTRST delay */
/* maximum number of JTAG devices expected in the chain
*/
jtag_interface_t *jtag = NULL;
/* configuration */
-jtag_interface_t *jtag_interface = NULL;
+static jtag_interface_t *jtag_interface = NULL;
int jtag_speed = 0;
/* forward declarations */
-void jtag_add_pathmove(int num_states, tap_state_t *path);
-void jtag_add_runtest(int num_cycles, tap_state_t endstate);
-void jtag_add_end_state(tap_state_t endstate);
-void jtag_add_sleep(u32 us);
-int jtag_execute_queue(void);
-int tap_state_by_name(const char *name);
+//void jtag_add_pathmove(int num_states, tap_state_t *path);
+//void jtag_add_runtest(int num_cycles, tap_state_t endstate);
+//void jtag_add_end_state(tap_state_t endstate);
+//void jtag_add_sleep(u32 us);
+//int jtag_execute_queue(void);
+static tap_state_t tap_state_by_name(const char *name);
/* jtag commands */
-int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
+static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
-int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
jtag_tap_t *jtag_AllTaps(void)
{
{
jtag_prelude1();
- if (state != -1)
+ if (state != TAP_INVALID)
jtag_add_end_state(state);
cmd_queue_cur_state = cmd_queue_end_state;
bit_count = 0;
#ifdef _DEBUG_JTAG_IO_
- LOG_DEBUG("num_fields: %i",cmd->num_fields);
+ LOG_DEBUG("%s num_fields: %i", cmd->ir_scan ? "IRSCAN" : "DRSCAN", cmd->num_fields);
#endif
for (i = 0; i < cmd->num_fields; i++)
free(char_buf);
#endif
}
+ else
+ {
+#ifdef _DEBUG_JTAG_IO_
+ LOG_DEBUG("fields[%i].out_value[%i]: NULL", i, cmd->fields[i].num_bits);
+#endif
+ }
bit_count += cmd->fields[i].num_bits;
}
+#ifdef _DEBUG_JTAG_IO_
+ //LOG_DEBUG("bit_count totalling: %i", bit_count );
+#endif
+
return bit_count;
}
u32 part;
u32 version;
- if (idcode == 0x000000FF)
+ /* some devices, such as AVR will output all 1's instead of TDI
+ input value at end of chain. */
+ if ((idcode == 0x000000FF)||(idcode == 0xFFFFFFFF))
{
int unexpected=0;
/* End of chain (invalid manufacturer ID)
for (bit_count += 32; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;bit_count += 32)
{
idcode = buf_get_u32(idcode_buffer, bit_count, 32);
- if (unexpected||(idcode != 0x000000FF))
+ if (unexpected||((idcode != 0x000000FF)&&(idcode != 0xFFFFFFFF)))
{
LOG_WARNING("Unexpected idcode after end of chain! %d 0x%08x", bit_count, idcode);
unexpected = 1;
jteap = tap->event_action;
/* replace existing? */
while (jteap) {
- if (jteap->event == n->value) {
+ if (jteap->event == (enum jtag_tap_event)n->value) {
break;
}
jteap = jteap->next;
return ERROR_OK;
}
-int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
int i;
int retval;
return ERROR_JTAG_INVALID_INTERFACE;
}
-int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
int e;
char buf[1024];
return e;
}
-int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
jtag_tap_t *tap;
return ERROR_OK;
}
-int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
if (argc < 1)
return ERROR_COMMAND_SYNTAX_ERROR;
return ERROR_OK;
}
-int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
if (argc < 1)
{
return ERROR_OK;
}
-int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
if (argc < 1)
{
return ERROR_OK;
}
-int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
int retval=ERROR_OK;
return retval;
}
-int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
int retval=ERROR_OK;
LOG_DEBUG("handle jtag khz");
}
-int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
- int state;
+ tap_state_t state;
if (argc < 1)
{
command_print( cmd_ctx, "Invalid state name: %s\n", args[0] );
return ERROR_COMMAND_SYNTAX_ERROR;
}
- jtag_add_end_state( (tap_state_t)(state));
+ jtag_add_end_state(state);
jtag_execute_queue();
}
command_print(cmd_ctx, "current endstate: %s", tap_state_name(cmd_queue_end_state));
return ERROR_OK;
}
-int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
int trst = -1;
int srst = -1;
return ERROR_OK;
}
-int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
if (argc < 1)
{
return ERROR_COMMAND_SYNTAX_ERROR;
}
- jtag_add_runtest(strtol(args[0], NULL, 0), -1);
+ jtag_add_runtest(strtol(args[0], NULL, 0), TAP_INVALID);
jtag_execute_queue();
return ERROR_OK;
}
-int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
int i;
scan_field_t *fields;
jtag_tap_t *tap;
- int endstate;
+ tap_state_t endstate;
if ((argc < 2) || (argc % 2))
{
/* "statename" */
/* at the end of the arguments. */
/* assume none. */
- endstate = -1;
+ endstate = TAP_INVALID;
if( argc >= 4 ){
/* have at least one pair of numbers. */
/* is last pair the magic text? */
const char *cpA;
const char *cpS;
cpA = args[ argc-1 ];
- for( endstate = 0 ; endstate < 16 ; endstate++ ){
+ for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
cpS = tap_state_name( endstate );
if( 0 == strcmp( cpA, cpS ) ){
break;
}
}
- if( endstate >= 16 ){
+ if( endstate >= TAP_NUM_STATES ){
return ERROR_COMMAND_SYNTAX_ERROR;
} else {
/* found - remove the last 2 args */
fields[i].in_handler_priv = NULL;
}
- jtag_add_ir_scan(argc / 2, fields, -1);
+ jtag_add_ir_scan(argc / 2, fields, TAP_INVALID);
/* did we have an endstate? */
- if( endstate >= 0 ){
+ if (endstate != TAP_INVALID)
jtag_add_end_state(endstate);
- }
+
jtag_execute_queue();
for (i = 0; i < argc / 2; i++)
return ERROR_OK;
}
-int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
+static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
{
int retval;
scan_field_t *fields;
int field_count = 0;
int i, e;
jtag_tap_t *tap;
- int endstate;
+ tap_state_t endstate;
/* args[1] = device
* args[2] = num_bits
}
/* assume no endstate */
- endstate = -1;
+ endstate = TAP_INVALID;
/* validate arguments as numbers */
e = JIM_OK;
for (i = 2; i < argc; i+=2)
fields[field_count++].in_handler_priv = NULL;
}
- jtag_add_dr_scan(num_fields, fields, -1);
+ jtag_add_dr_scan(num_fields, fields, TAP_INVALID);
/* did we get an end state? */
- if( endstate >= 0 ){
- jtag_add_end_state( (tap_state_t)endstate );
- }
+ if (endstate != TAP_INVALID)
+ jtag_add_end_state(endstate);
+
retval = jtag_execute_queue();
if (retval != ERROR_OK)
{
return JIM_OK;
}
-int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
if (argc == 1)
{
{
/* given a stable state, return the index into the tms_seqs[] array within tap_get_tms_path() */
- /* old version
- const static int move_map[16] =
- {
- 0, -1, -1, 2, -1, 3, -1, -1,
- 1, -1, -1, 4, -1, 5, -1, -1
- };
- */
-
int ndx;
switch( astate )
return ndx;
}
-int tap_get_tms_path( tap_state_t from, tap_state_t to )
+
+/* tap_move[i][j]: tap movement command to go from state i to state j
+ * 0: Test-Logic-Reset
+ * 1: Run-Test/Idle
+ * 2: Shift-DR
+ * 3: Pause-DR
+ * 4: Shift-IR
+ * 5: Pause-IR
+ *
+ * DRSHIFT->DRSHIFT and IRSHIFT->IRSHIFT have to be caught in interface specific code
+ */
+static struct
{
- /* tap_move[i][j]: tap movement command to go from state i to state j
- * 0: Test-Logic-Reset
- * 1: Run-Test/Idle
- * 2: Shift-DR
- * 3: Pause-DR
- * 4: Shift-IR
- * 5: Pause-IR
- *
- * DRSHIFT->DRSHIFT and IRSHIFT->IRSHIFT have to be caught in interface specific code
+ u8 bits;
+ u8 bit_count;
+
+} tms_seqs[6][6] = /* [from_state_ndx][to_state_ndx] */
+{
+ /* value clocked to TMS to move from one of six stable states to another.
+ * N.B. OOCD clocks TMS from LSB first, so read these right-to-left.
+ * N.B. These values are tightly bound to the table in tap_get_tms_path_len().
+ * N.B. Reset only needs to be 0b11111, but in JLink an even byte of 1's is more stable.
+ * These extra ones cause no TAP state problem, because we go into reset and stay in reset.
*/
- const static u8 tms_seqs[6][6] =
- {
- /* value clocked to TMS to move from one of six stable states to another */
- /* RESET IDLE DRSHIFT DRPAUSE IRSHIFT IRPAUSE */
- { 0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16 }, /* RESET */
- { 0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b }, /* IDLE */
- { 0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f }, /* DRSHIFT */
- { 0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f }, /* DRPAUSE */
- { 0x7f, 0x31, 0x07, 0x17, 0x00, 0x01 }, /* IRSHIFT */
- { 0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f } /* IRPAUSE */
- };
+/*
+ * These macros allow us to specify TMS state transitions by bits rather than hex bytes.
+ * Read the bits from LSBit first to MSBit last (right-to-left).
+ */
+#define HEX__(n) 0x##n##LU
+
+#define B8__(x) \
+ (((x) & 0x0000000FLU)?(1<<0):0) \
+ +(((x) & 0x000000F0LU)?(1<<1):0) \
+ +(((x) & 0x00000F00LU)?(1<<2):0) \
+ +(((x) & 0x0000F000LU)?(1<<3):0) \
+ +(((x) & 0x000F0000LU)?(1<<4):0) \
+ +(((x) & 0x00F00000LU)?(1<<5):0) \
+ +(((x) & 0x0F000000LU)?(1<<6):0) \
+ +(((x) & 0xF0000000LU)?(1<<7):0)
+
+#define B8(bits,count) { ((u8)B8__(HEX__(bits))), (count) }
+
+#if 0 && ((BUILD_FT2232_FTD2XX==1) || (BUILD_FT2232_LIBFTDI==1))
+ /* this is the table submitted by Jeff Williams on 3/30/2009 with this comment:
+
+ OK, I added Peter's version of the state table, and it works OK for
+ me on MC1322x. I've recreated the jlink portion of patch with this
+ new state table. His changes to my state table are pretty minor in
+ terms of total transitions, but Peter feels that his version fixes
+ some long-standing problems.
+ Jeff
+
+ I added the bit count into the table
+ Dick
+ */
- if( !tap_is_state_stable(from) )
- {
- LOG_ERROR( "fatal: tap_state \"from\" (=%s) is not stable", tap_state_name(from) );
- exit(1);
- }
+ /* to state: */
+ /* RESET IDLE DRSHIFT DRPAUSE IRSHIFT IRPAUSE */ /* from state: */
+ { B8(11111,5), B8(0,1), B8(0010,4), B8(01010,5), B8(00110,5), B8(010110,6) }, /* RESET */
+ { B8(11111,5), B8(0,1), B8(001,3), B8(0101,4), B8(0011,4), B8(01011,5) }, /* IDLE */
+ { B8(11111,5), B8(011,3), B8(00111,5), B8(01,2), B8(001111,6), B8(0101111,7) }, /* DRSHIFT */
+ { B8(11111,5), B8(011,3), B8(01,2), B8(0,1), B8(001111,6), B8(0101111,7) }, /* DRPAUSE */
+ { B8(11111,5), B8(011,3), B8(00111,5), B8(010111,6), B8(001111,6), B8(01,2) }, /* IRSHIFT */
+ { B8(11111,5), B8(011,3), B8(00111,5), B8(010111,6), B8(01,2), B8(0,1) } /* IRPAUSE */
+
+#else /* this is the old table, converted from hex and with the bit_count set to 7 for each combo, like before */
+
+ /* to state: */
+ /* RESET IDLE DRSHIFT DRPAUSE IRSHIFT IRPAUSE */ /* from state: */
+ { B8(1111111,7), B8(0000000,7), B8(0010111,7), B8(0001010,7), B8(0011011,7), B8(0010110,7) }, /* RESET */
+ { B8(1111111,7), B8(0000000,7), B8(0100101,7), B8(0000101,7), B8(0101011,7), B8(0001011,7) }, /* IDLE */
+ { B8(1111111,7), B8(0110001,7), B8(0000000,7), B8(0000001,7), B8(0001111,7), B8(0101111,7) }, /* DRSHIFT */
+ { B8(1111111,7), B8(0110000,7), B8(0100000,7), B8(0010111,7), B8(0011110,7), B8(0101111,7) }, /* DRPAUSE */
+ { B8(1111111,7), B8(0110001,7), B8(0000111,7), B8(0010111,7), B8(0000000,7), B8(0000001,7) }, /* IRSHIFT */
+ { B8(1111111,7), B8(0110000,7), B8(0011100,7), B8(0010111,7), B8(0100000,7), B8(0101111,7) }, /* IRPAUSE */
- if( !tap_is_state_stable(to) )
- {
- LOG_ERROR( "fatal: tap_state \"to\" (=%s) is not stable", tap_state_name(to) );
- exit(1);
- }
+#endif
- /* @todo: support other than 7 clocks ? */
- return tms_seqs[tap_move_ndx(from)][tap_move_ndx(to)];
+#if 0 /* keeping old hex stuff for awhile, for reference */
+ /* RESET IDLE DRSHIFT DRPAUSE IRSHIFT IRPAUSE */
+ { 0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16 }, /* RESET */
+ { 0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b }, /* IDLE */
+ { 0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f }, /* DRSHIFT */
+ { 0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f }, /* DRPAUSE */
+ { 0x7f, 0x31, 0x07, 0x17, 0x00, 0x01 }, /* IRSHIFT */
+ { 0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f } /* IRPAUSE */
+#endif
+};
+
+
+int tap_get_tms_path( tap_state_t from, tap_state_t to )
+{
+ return tms_seqs[tap_move_ndx(from)][tap_move_ndx(to)].bits;
+}
+
+
+int tap_get_tms_path_len( tap_state_t from, tap_state_t to )
+{
+ return tms_seqs[tap_move_ndx(from)][tap_move_ndx(to)].bit_count;
}
switch( state )
{
case TAP_RESET: ret = "RESET"; break;
- case TAP_IDLE: ret = "IDLE"; break;
+ case TAP_IDLE: ret = "RUN/IDLE"; break;
case TAP_DRSELECT: ret = "DRSELECT"; break;
case TAP_DRCAPTURE: ret = "DRCAPTURE"; break;
case TAP_DRSHIFT: ret = "DRSHIFT"; break;
return ret;
}
-int tap_state_by_name( const char *name )
+static tap_state_t tap_state_by_name( const char *name )
{
- int x;
+ tap_state_t x;
- for( x = 0 ; x < 16 ; x++ ){
+ for( x = 0 ; x < TAP_NUM_STATES ; x++ ){
/* be nice to the human */
if( 0 == strcasecmp( name, tap_state_name(x) ) ){
return x;
}
}
/* not found */
- return -1;
+ return TAP_INVALID;
+}
+
+#ifdef _DEBUG_JTAG_IO_
+
+#define JTAG_DEBUG_STATE_APPEND(buf, len, bit) \
+ do { buf[len] = bit ? '1' : '0'; } while(0)
+#define JTAG_DEBUG_STATE_PRINT(a, b, astr, bstr) \
+ DEBUG_JTAG_IO("TAP/SM: %9s -> %5s\tTMS: %s\tTDI: %s", \
+ tap_state_name(a), tap_state_name(b), astr, bstr)
+
+tap_state_t jtag_debug_state_machine(const void *tms_buf, const void *tdi_buf,
+ unsigned tap_bits, tap_state_t next_state)
+{
+ const u8 *tms_buffer;
+ const u8 *tdi_buffer;
+ unsigned tap_bytes;
+ unsigned cur_byte;
+ unsigned cur_bit;
+
+ unsigned tap_out_bits;
+ char tms_str[33];
+ char tdi_str[33];
+
+ tap_state_t last_state;
+
+ // set startstate (and possibly last, if tap_bits == 0)
+ last_state = next_state;
+ DEBUG_JTAG_IO("TAP/SM: START state: %s", tap_state_name(next_state));
+
+ tms_buffer = (const u8 *)tms_buf;
+ tdi_buffer = (const u8 *)tdi_buf;
+
+ tap_bytes = TAP_SCAN_BYTES(tap_bits);
+ DEBUG_JTAG_IO("TAP/SM: TMS bits: %u (bytes: %u)", tap_bits, tap_bytes);
+
+ tap_out_bits = 0;
+ for(cur_byte = 0; cur_byte < tap_bytes; cur_byte++)
+ {
+ for(cur_bit = 0; cur_bit < 8; cur_bit++)
+ {
+ // make sure we do not run off the end of the buffers
+ unsigned tap_bit = cur_byte * 8 + cur_bit;
+ if (tap_bit == tap_bits)
+ break;
+
+ // check and save TMS bit
+ tap_bit = !!(tms_buffer[cur_byte] & (1 << cur_bit));
+ JTAG_DEBUG_STATE_APPEND(tms_str, tap_out_bits, tap_bit);
+
+ // use TMS bit to find the next TAP state
+ next_state = tap_state_transition(last_state, tap_bit);
+
+ // check and store TDI bit
+ tap_bit = !!(tdi_buffer[cur_byte] & (1 << cur_bit));
+ JTAG_DEBUG_STATE_APPEND(tdi_str, tap_out_bits, tap_bit);
+
+ // increment TAP bits
+ tap_out_bits++;
+
+ // Only show TDO bits on state transitions, or
+ // after some number of bits in the same state.
+ if ((next_state == last_state) && (tap_out_bits < 32))
+ continue;
+
+ // terminate strings and display state transition
+ tms_str[tap_out_bits] = tdi_str[tap_out_bits] = 0;
+ JTAG_DEBUG_STATE_PRINT(last_state, next_state, tms_str, tdi_str);
+
+ // reset state
+ last_state = next_state;
+ tap_out_bits = 0;
+ }
+ }
+
+ if (tap_out_bits)
+ {
+ // terminate strings and display state transition
+ tms_str[tap_out_bits] = tdi_str[tap_out_bits] = 0;
+ JTAG_DEBUG_STATE_PRINT(last_state, next_state, tms_str, tdi_str);
+ }
+
+ DEBUG_JTAG_IO("TAP/SM: FINAL state: %s", tap_state_name(next_state));
+
+ return next_state;
}
+#endif // _DEBUG_JTAG_IO_
/*-----</Cable Helper API>--------------------------------------*/
Code Review / openocd.git / blobdiff