/* xsvf has it's own definition of a statemove. This needs
* to be handled according to the xsvf spec, which has nothing
* to do with the JTAG spec or OpenOCD as such.
*
* Implemented via jtag_add_pathmove().
*/
static void xsvf_add_statemove(tap_state_t state)
{
tap_state_t moves[7]; /* max # of transitions */
tap_state_t curstate = cmd_queue_cur_state;
int i;
u8 move = tap_get_tms_path(cmd_queue_cur_state, state);
if (state != TAP_RESET && state==cmd_queue_cur_state)
return;
if(state==TAP_RESET)
{
jtag_add_tlr();
return;
}
for (i=0; i<7; i++)
{
int j = (move >> i) & 1;
if (j)
{
curstate = tap_state_transition(curstate, true);
}
else
{
curstate = tap_state_transition(curstate, false);
}
moves[i] = curstate;
}
jtag_add_pathmove(7, moves);
}
int jtag_add_statemove(tap_state_t goal_state)
{
tap_state_t cur_state = cmd_queue_cur_state;
if (goal_state != cur_state) {
LOG_DEBUG("cur_state=%s goal_state=%s",
tap_state_name(cur_state),
tap_state_name(goal_state));
}
/* If goal is RESET, be paranoid and force that that transition
* (e.g. five TCK cycles, TMS high). Else trust "cur_state".
*/
if (goal_state == TAP_RESET)
jtag_add_tlr();
else if (goal_state == cur_state)
/* nothing to do */;
else if (tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state)) {
unsigned tms_bits = tap_get_tms_path(cur_state, goal_state);
unsigned tms_count = tap_get_tms_path_len(cur_state, goal_state);
tap_state_t moves[8];
assert(tms_count < ARRAY_SIZE(moves));
for (unsigned i = 0; i < tms_count; i++, tms_bits >>= 1) {
bool bit = tms_bits & 1;
cur_state = tap_state_transition(cur_state, bit);
moves[i] = cur_state;
}
jtag_add_pathmove(tms_count, moves);
} else if (tap_state_transition(cur_state, true) == goal_state
/* REVISIT no error handling here! */
void arm11_add_dr_scan_vc(int num_fields, struct scan_field *fields,
tap_state_t state)
{
if (cmd_queue_cur_state == TAP_DRPAUSE)
jtag_add_pathmove(ARRAY_SIZE(arm11_move_pd_to_sd_via_cd), arm11_move_pd_to_sd_via_cd);
jtag_add_dr_scan(num_fields, fields, state);
}
/* REVISIT no error handling here! */
static void arm11_add_ir_scan_vc(int num_fields, struct scan_field *fields,
tap_state_t state)
{
if (cmd_queue_cur_state == TAP_IRPAUSE)
jtag_add_pathmove(ARRAY_SIZE(arm11_move_pi_to_si_via_ci), arm11_move_pi_to_si_via_ci);
jtag_add_ir_scan(num_fields, fields, state);
}
int arm11_add_dr_scan_vc(int num_fields, scan_field_t *fields, tap_state_t state)
{
if (cmd_queue_cur_state == TAP_DRPAUSE)
jtag_add_pathmove(asizeof(arm11_move_pd_to_sd_via_cd), arm11_move_pd_to_sd_via_cd);
jtag_add_dr_scan(num_fields, fields, state);
return ERROR_OK;
}
/** Execute one instruction via ITR repeatedly while
* passing data to the core via DTR on each execution.
*
* No Ready check during transmission.
*
* The executed instruction \em must read data from DTR.
*
* \pre arm11_run_instr_data_prepare() / arm11_run_instr_data_finish() block
*
* \param arm11 Target state variable.
* \param opcode ARM opcode
* \param data Pointer to the data words to be passed to the core
* \param count Number of data words and instruction repetitions
*
*/
void arm11_run_instr_data_to_core_noack(arm11_common_t * arm11, u32 opcode, u32 * data, size_t count)
{
arm11_add_IR(arm11, ARM11_ITRSEL, -1);
arm11_add_debug_INST(arm11, opcode, NULL, TAP_DRPAUSE);
arm11_add_IR(arm11, ARM11_EXTEST, -1);
scan_field_t chain5_fields[3];
arm11_setup_field(arm11, 32, NULL/*&Data*/, NULL, chain5_fields + 0);
arm11_setup_field(arm11, 1, NULL, NULL /*&Ready*/, chain5_fields + 1);
arm11_setup_field(arm11, 1, NULL, NULL, chain5_fields + 2);
u8 Readies[count + 1];
u8 * ReadyPos = Readies;
while (count--)
{
chain5_fields[0].out_value = (void *)(data++);
chain5_fields[1].in_value = ReadyPos++;
if (count)
{
jtag_add_dr_scan(asizeof(chain5_fields), chain5_fields, TAP_DRPAUSE);
jtag_add_pathmove(asizeof(arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay),
arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay);
}
else
{
jtag_add_dr_scan(asizeof(chain5_fields), chain5_fields, TAP_IDLE);
}
}
arm11_add_IR(arm11, ARM11_INTEST, -1);
chain5_fields[0].out_value = 0;
chain5_fields[1].in_value = ReadyPos++;
arm11_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, TAP_DRPAUSE);
jtag_execute_queue();
size_t error_count = 0;
{size_t i;
for (i = 0; i < asizeof(Readies); i++)
{
if (Readies[i] != 1)
{
error_count++;
}
}}
if (error_count)
LOG_ERROR("Transfer errors " ZU, error_count);
}
static int Jim_Command_pathmove(Jim_Interp *interp, int argc, Jim_Obj *const *args)
{
tap_state_t states[8];
if ((argc < 2) || ((size_t)argc > (ARRAY_SIZE(states) + 1)))
{
Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
return JIM_ERR;
}
script_debug(interp, "pathmove", argc, args);
int i;
for (i = 0; i < argc-1; i++)
{
const char *cp;
cp = Jim_GetString(args[i + 1], NULL);
states[i] = tap_state_by_name(cp);
if (states[i] < 0)
{
/* update the error message */
Jim_SetResultFormatted(interp,"endstate: %s invalid", cp);
return JIM_ERR;
}
}
if ((jtag_add_statemove(states[0]) != ERROR_OK) || (jtag_execute_queue()!= ERROR_OK))
{
Jim_SetResultString(interp, "pathmove: jtag execute failed",-1);
return JIM_ERR;
}
jtag_add_pathmove(argc-2, states + 1);
if (jtag_execute_queue()!= ERROR_OK)
{
Jim_SetResultString(interp, "pathmove: failed",-1);
return JIM_ERR;
}
return JIM_OK;
}
/** Execute one instruction via ITR repeatedly while
* passing data to the core via DTR on each execution.
*
* Caller guarantees that processor is in debug state, that DSCR_ITR_EN
* is set, the ITR Ready flag is set (as seen on the previous entry to
* TAP_DRCAPTURE), and the DSCR sticky abort flag is clear.
*
* No Ready check during transmission.
*
* The executed instruction \em must read data from DTR.
*
* \pre arm11_run_instr_data_prepare() / arm11_run_instr_data_finish() block
*
* \param arm11 Target state variable.
* \param opcode ARM opcode
* \param data Pointer to the data words to be passed to the core
* \param count Number of data words and instruction repetitions
*
*/
int arm11_run_instr_data_to_core_noack(struct arm11_common * arm11, uint32_t opcode, uint32_t * data, size_t count)
{
arm11_add_IR(arm11, ARM11_ITRSEL, ARM11_TAP_DEFAULT);
arm11_add_debug_INST(arm11, opcode, NULL, TAP_DRPAUSE);
arm11_add_IR(arm11, ARM11_EXTEST, ARM11_TAP_DEFAULT);
struct scan_field chain5_fields[3];
arm11_setup_field(arm11, 32, NULL/*&Data*/, NULL, chain5_fields + 0);
arm11_setup_field(arm11, 1, NULL, NULL /*&Ready*/, chain5_fields + 1);
arm11_setup_field(arm11, 1, NULL, NULL, chain5_fields + 2);
uint8_t *Readies;
unsigned readiesNum = count + 1;
unsigned bytes = sizeof(*Readies)*readiesNum;
Readies = (uint8_t *) malloc(bytes);
if (Readies == NULL)
{
LOG_ERROR("Out of memory allocating %u bytes", bytes);
return ERROR_FAIL;
}
uint8_t * ReadyPos = Readies;
while (count--)
{
chain5_fields[0].out_value = (void *)(data++);
chain5_fields[1].in_value = ReadyPos++;
if (count)
{
jtag_add_dr_scan(ARRAY_SIZE(chain5_fields), chain5_fields, jtag_set_end_state(TAP_DRPAUSE));
jtag_add_pathmove(ARRAY_SIZE(arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay),
arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay);
}
else
{
jtag_add_dr_scan(ARRAY_SIZE(chain5_fields), chain5_fields, jtag_set_end_state(TAP_IDLE));
}
}
arm11_add_IR(arm11, ARM11_INTEST, ARM11_TAP_DEFAULT);
chain5_fields[0].out_value = 0;
chain5_fields[1].in_value = ReadyPos++;
arm11_add_dr_scan_vc(ARRAY_SIZE(chain5_fields), chain5_fields, TAP_DRPAUSE);
int retval = jtag_execute_queue();
if (retval == ERROR_OK)
{
unsigned error_count = 0;
for (size_t i = 0; i < readiesNum; i++)
{
if (Readies[i] != 1)
{
error_count++;
}
}
if (error_count > 0 )
LOG_ERROR("%u words out of %u not transferred",
error_count, readiesNum);
}
free(Readies);
return retval;
}
/* This inner loop can be implemented by the minidriver, oftentimes in hardware... The
* minidriver can call the default implementation as a fallback or implement it
* from scratch.
*/
int arm11_run_instr_data_to_core_noack_inner_default(struct jtag_tap * tap, uint32_t opcode, uint32_t * data, size_t count)
{
struct scan_field chain5_fields[3];
chain5_fields[0].num_bits = 32;
chain5_fields[0].out_value = NULL; /*&Data*/
chain5_fields[0].in_value = NULL;
chain5_fields[1].num_bits = 1;
chain5_fields[1].out_value = NULL;
chain5_fields[1].in_value = NULL; /*&Ready*/
chain5_fields[2].num_bits = 1;
chain5_fields[2].out_value = NULL;
chain5_fields[2].in_value = NULL;
uint8_t *Readies;
unsigned readiesNum = count;
unsigned bytes = sizeof(*Readies)*readiesNum;
Readies = (uint8_t *) malloc(bytes);
if (Readies == NULL)
{
LOG_ERROR("Out of memory allocating %u bytes", bytes);
return ERROR_FAIL;
}
uint8_t * ReadyPos = Readies;
while (count--)
{
chain5_fields[0].out_value = (void *)(data++);
chain5_fields[1].in_value = ReadyPos++;
if (count > 0)
{
jtag_add_dr_scan(tap, ARRAY_SIZE(chain5_fields), chain5_fields, TAP_DRPAUSE);
jtag_add_pathmove(ARRAY_SIZE(arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay),
arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay);
} else
{
jtag_add_dr_scan(tap, ARRAY_SIZE(chain5_fields), chain5_fields, TAP_IDLE);
}
}
int retval = jtag_execute_queue();
if (retval == ERROR_OK)
{
unsigned error_count = 0;
for (size_t i = 0; i < readiesNum; i++)
{
if (Readies[i] != 1)
{
error_count++;
}
}
if (error_count > 0 )
{
LOG_ERROR("%u words out of %u not transferred",
error_count, readiesNum);
retval = ERROR_FAIL;
}
}
free(Readies);
return retval;
}
static int handle_xsvf_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
u8 *dr_out_buf = NULL; /* from host to device (TDI) */
u8 *dr_in_buf = NULL; /* from device to host (TDO) */
u8 *dr_in_mask = NULL;
int xsdrsize = 0;
int xruntest = 0; /* number of TCK cycles OR microseconds */
int xrepeat = 0; /* number of retries */
tap_state_t xendir = TAP_IDLE; /* see page 8 of the SVF spec, initial xendir to be TAP_IDLE */
tap_state_t xenddr = TAP_IDLE;
u8 opcode;
u8 uc;
long file_offset = 0;
int loop_count = 0;
tap_state_t loop_state = TAP_IDLE;
int loop_clocks = 0;
int loop_usecs = 0;
int do_abort = 0;
int unsupported = 0;
int tdo_mismatch = 0;
int result;
int verbose = 1;
char* filename;
int runtest_requires_tck = 0; /* a flag telling whether to clock TCK during waits, or simply sleep, controled by virt2 */
/* use NULL to indicate a "plain" xsvf file which accounts for
additional devices in the scan chain, otherwise the device
that should be affected
*/
jtag_tap_t *tap = NULL;
if (argc < 2)
{
command_print(cmd_ctx, "usage: xsvf <device#|plain> <file> [<variant>] [quiet]");
return ERROR_FAIL;
}
filename = args[1]; /* we mess with args starting point below, snapshot filename here */
if (strcmp(args[0], "plain") != 0)
{
tap = jtag_TapByString( args[0] );
if (!tap )
{
command_print( cmd_ctx, "Tap: %s unknown", args[0] );
return ERROR_FAIL;
}
}
if ((xsvf_fd = open(filename, O_RDONLY)) < 0)
{
command_print(cmd_ctx, "file \"%s\" not found", filename);
return ERROR_FAIL;
}
/* if this argument is present, then interpret xruntest counts as TCK cycles rather than as usecs */
if ((argc > 2) && (strcmp(args[2], "virt2") == 0))
{
runtest_requires_tck = 1;
--argc;
++args;
}
if ((argc > 2) && (strcmp(args[2], "quiet") == 0))
{
verbose = 0;
}
LOG_USER("xsvf processing file: \"%s\"", filename);
while( read(xsvf_fd, &opcode, 1) > 0 )
{
/* record the position of the just read opcode within the file */
file_offset = lseek(xsvf_fd, 0, SEEK_CUR) - 1;
switch (opcode)
{
case XCOMPLETE:
LOG_DEBUG("XCOMPLETE");
result = jtag_execute_queue();
if (result != ERROR_OK)
{
tdo_mismatch = 1;
break;
}
break;
case XTDOMASK:
LOG_DEBUG("XTDOMASK");
if (dr_in_mask && (xsvf_read_buffer(xsdrsize, xsvf_fd, dr_in_mask) != ERROR_OK))
do_abort = 1;
break;
case XRUNTEST:
{
u8 xruntest_buf[4];
if (read(xsvf_fd, xruntest_buf, 4) < 0)
{
do_abort = 1;
break;
}
xruntest = be_to_h_u32(xruntest_buf);
LOG_DEBUG("XRUNTEST %d 0x%08X", xruntest, xruntest);
}
break;
case XREPEAT:
{
u8 myrepeat;
if (read(xsvf_fd, &myrepeat, 1) < 0)
do_abort = 1;
else
{
xrepeat = myrepeat;
LOG_DEBUG("XREPEAT %d", xrepeat );
}
}
break;
case XSDRSIZE:
{
u8 xsdrsize_buf[4];
if (read(xsvf_fd, xsdrsize_buf, 4) < 0)
{
do_abort = 1;
break;
}
xsdrsize = be_to_h_u32(xsdrsize_buf);
LOG_DEBUG("XSDRSIZE %d", xsdrsize);
if( dr_out_buf ) free(dr_out_buf);
if( dr_in_buf) free(dr_in_buf);
if( dr_in_mask) free(dr_in_mask);
dr_out_buf = malloc((xsdrsize + 7) / 8);
dr_in_buf = malloc((xsdrsize + 7) / 8);
dr_in_mask = malloc((xsdrsize + 7) / 8);
}
break;
case XSDR: /* these two are identical except for the dr_in_buf */
case XSDRTDO:
{
int limit = xrepeat;
int matched = 0;
int attempt;
const char* op_name = (opcode == XSDR ? "XSDR" : "XSDRTDO");
if (xsvf_read_buffer(xsdrsize, xsvf_fd, dr_out_buf) != ERROR_OK)
{
do_abort = 1;
break;
}
if (opcode == XSDRTDO)
{
if(xsvf_read_buffer(xsdrsize, xsvf_fd, dr_in_buf) != ERROR_OK )
{
do_abort = 1;
break;
}
}
if (limit < 1)
limit = 1;
LOG_DEBUG("%s %d", op_name, xsdrsize);
for( attempt=0; attempt<limit; ++attempt )
{
scan_field_t field;
if( attempt>0 )
{
/* perform the XC9500 exception handling sequence shown in xapp067.pdf and
illustrated in psuedo code at end of this file. We start from state
DRPAUSE:
go to Exit2-DR
go to Shift-DR
go to Exit1-DR
go to Update-DR
go to Run-Test/Idle
This sequence should be harmless for other devices, and it
will be skipped entirely if xrepeat is set to zero.
*/
static tap_state_t exception_path[] = {
TAP_DREXIT2,
TAP_DRSHIFT,
TAP_DREXIT1,
TAP_DRUPDATE,
TAP_IDLE,
};
jtag_add_pathmove( sizeof(exception_path)/sizeof(exception_path[0]), exception_path);
if (verbose)
LOG_USER("%s %d retry %d", op_name, xsdrsize, attempt);
}
field.tap = tap;
field.num_bits = xsdrsize;
field.out_value = dr_out_buf;
field.out_mask = NULL;
field.in_value = NULL;
jtag_set_check_value(&field, dr_in_buf, dr_in_mask, NULL);
if (tap == NULL)
jtag_add_plain_dr_scan(1, &field, TAP_DRPAUSE);
else
jtag_add_dr_scan(1, &field, TAP_DRPAUSE);
/* LOG_DEBUG("FLUSHING QUEUE"); */
result = jtag_execute_queue();
if (result == ERROR_OK)
{
matched = 1;
break;
}
}
if (!matched)
{
LOG_USER( "%s mismatch", op_name);
tdo_mismatch = 1;
break;
}
/* See page 19 of XSVF spec regarding opcode "XSDR" */
if (xruntest)
{
xsvf_add_statemove(TAP_IDLE);
if (runtest_requires_tck)
jtag_add_clocks(xruntest);
else
jtag_add_sleep(xruntest);
}
else if (xendir != TAP_DRPAUSE) /* we are already in TAP_DRPAUSE */
xsvf_add_statemove(xenddr);
}
break;
case XSETSDRMASKS:
LOG_ERROR("unsupported XSETSDRMASKS\n");
unsupported = 1;
break;
case XSDRINC:
LOG_ERROR("unsupported XSDRINC\n");
unsupported = 1;
break;
case XSDRB:
LOG_ERROR("unsupported XSDRB\n");
unsupported = 1;
break;
case XSDRC:
LOG_ERROR("unsupported XSDRC\n");
unsupported = 1;
break;
case XSDRE:
LOG_ERROR("unsupported XSDRE\n");
unsupported = 1;
break;
case XSDRTDOB:
LOG_ERROR("unsupported XSDRTDOB\n");
unsupported = 1;
break;
case XSDRTDOC:
LOG_ERROR("unsupported XSDRTDOC\n");
unsupported = 1;
break;
case XSDRTDOE:
LOG_ERROR("unsupported XSDRTDOE\n");
unsupported = 1;
break;
case XSTATE:
{
tap_state_t mystate;
tap_state_t *path;
int path_len;
if (read(xsvf_fd, &uc, 1) < 0)
{
do_abort = 1;
break;
}
mystate = xsvf_to_tap(uc);
LOG_DEBUG("XSTATE 0x%02X %s", uc, tap_state_name(mystate) );
path = calloc(XSTATE_MAX_PATH, 4);
path_len = 1;
path[0] = mystate;
if (xsvf_read_xstates(xsvf_fd, path, XSTATE_MAX_PATH, &path_len) != ERROR_OK)
do_abort = 1;
else
{
int i,lasti;
/* here the trick is that jtag_add_pathmove() must end in a stable
* state, so we must only invoke jtag_add_tlr() when we absolutely
* have to
*/
for(i=0,lasti=0; i<path_len; i++)
{
if(path[i]==TAP_RESET)
{
if(i>lasti)
{
jtag_add_pathmove(i-lasti,path+lasti);
}
lasti=i+1;
jtag_add_tlr();
}
}
if(i>=lasti)
{
jtag_add_pathmove(i-lasti, path+lasti);
}
}
free(path);
}
break;
case XENDIR:
{
tap_state_t mystate;
if (read(xsvf_fd, &uc, 1) < 0)
{
do_abort = 1;
break;
}
/* see page 22 of XSVF spec */
mystate = uc == 1 ? TAP_IRPAUSE : TAP_IDLE;
LOG_DEBUG("XENDIR 0x%02X %s", uc, tap_state_name(mystate));
/* assuming that the XRUNTEST comes from SVF RUNTEST, then only these states
* should come here because the SVF spec only allows these with a RUNTEST
*/
if (mystate != TAP_IRPAUSE && mystate != TAP_DRPAUSE && mystate != TAP_RESET && mystate != TAP_IDLE )
{
LOG_ERROR("illegal XENDIR endstate: \"%s\"", tap_state_name(mystate));
unsupported = 1;
break;
}
xendir = mystate;
}
break;
case XENDDR:
{
tap_state_t mystate;
if (read(xsvf_fd, &uc, 1) < 0)
{
do_abort = 1;
break;
}
/* see page 22 of XSVF spec */
mystate = uc == 1 ? TAP_DRPAUSE : TAP_IDLE;
LOG_DEBUG("XENDDR %02X %s", uc, tap_state_name(mystate));
if (mystate != TAP_IRPAUSE && mystate != TAP_DRPAUSE && mystate != TAP_RESET && mystate != TAP_IDLE )
{
LOG_ERROR("illegal XENDDR endstate: \"%s\"", tap_state_name( mystate ));
unsupported = 1;
break;
}
xenddr = mystate;
}
break;
case XSIR:
case XSIR2:
{
u8 short_buf[2];
u8* ir_buf;
int bitcount;
tap_state_t my_end_state = xruntest ? TAP_IDLE : xendir;
if( opcode == XSIR )
{
/* one byte bitcount */
if (read(xsvf_fd, short_buf, 1) < 0)
{
do_abort = 1;
break;
}
bitcount = short_buf[0];
LOG_DEBUG("XSIR %d", bitcount);
}
else
{
if (read(xsvf_fd, short_buf, 2) < 0)
{
do_abort = 1;
break;
}
bitcount = be_to_h_u16(short_buf);
LOG_DEBUG("XSIR2 %d", bitcount);
}
ir_buf = malloc((bitcount+7) / 8);
if (xsvf_read_buffer(bitcount, xsvf_fd, ir_buf) != ERROR_OK)
do_abort = 1;
else
{
scan_field_t field;
field.tap = tap;
field.num_bits = bitcount;
field.out_value = ir_buf;
field.out_mask = NULL;
field.in_value = NULL;
field.in_check_value = NULL;
field.in_check_mask = NULL;
field.in_handler = NULL;
field.in_handler_priv = NULL;
if (tap == NULL)
jtag_add_plain_ir_scan(1, &field, my_end_state);
else
jtag_add_ir_scan(1, &field, my_end_state);
if (xruntest)
{
if (runtest_requires_tck)
jtag_add_clocks(xruntest);
else
jtag_add_sleep(xruntest);
}
/* Note that an -irmask of non-zero in your config file
* can cause this to fail. Setting -irmask to zero cand work
* around the problem.
*/
/* LOG_DEBUG("FLUSHING QUEUE"); */
result = jtag_execute_queue();
if(result != ERROR_OK)
{
tdo_mismatch = 1;
}
}
free(ir_buf);
}
break;
case XCOMMENT:
{
int ndx = 0;
char comment[128];
do
{
if (read(xsvf_fd, &uc, 1) < 0)
{
do_abort = 1;
break;
}
if ( ndx < sizeof(comment)-1 )
comment[ndx++] = uc;
} while (uc != 0);
comment[sizeof(comment)-1] = 0; /* regardless, terminate */
if (verbose)
LOG_USER(comment);
}
break;
case XWAIT:
{
/* expected in stream:
XWAIT <u8 wait_state> <u8 end_state> <u32 usecs>
*/
u8 wait;
u8 end;
u8 delay_buf[4];
tap_state_t wait_state;
tap_state_t end_state;
int delay;
if ( read(xsvf_fd, &wait, 1) < 0
|| read(xsvf_fd, &end, 1) < 0
|| read(xsvf_fd, delay_buf, 4) < 0)
{
do_abort = 1;
break;
}
wait_state = xsvf_to_tap(wait);
end_state = xsvf_to_tap(end);
delay = be_to_h_u32(delay_buf);
LOG_DEBUG("XWAIT %s %s usecs:%d", tap_state_name(wait_state), tap_state_name(end_state), delay);
if (runtest_requires_tck && wait_state == TAP_IDLE )
{
jtag_add_runtest(delay, end_state);
}
else
{
xsvf_add_statemove( wait_state );
jtag_add_sleep(delay);
xsvf_add_statemove( end_state );
}
}
break;
case XWAITSTATE:
{
/* expected in stream:
XWAITSTATE <u8 wait_state> <u8 end_state> <u32 clock_count> <u32 usecs>
*/
u8 clock_buf[4];
u8 usecs_buf[4];
u8 wait;
u8 end;
tap_state_t wait_state;
tap_state_t end_state;
int clock_count;
int usecs;
if ( read(xsvf_fd, &wait, 1) < 0
|| read(xsvf_fd, &end, 1) < 0
|| read(xsvf_fd, clock_buf, 4) < 0
|| read(xsvf_fd, usecs_buf, 4) < 0 )
{
do_abort = 1;
break;
}
wait_state = xsvf_to_tap( wait );
end_state = xsvf_to_tap( end );
clock_count = be_to_h_u32(clock_buf);
usecs = be_to_h_u32(usecs_buf);
LOG_DEBUG("XWAITSTATE %s %s clocks:%i usecs:%i",
tap_state_name(wait_state),
tap_state_name(end_state),
clock_count, usecs);
/* the following states are 'stable', meaning that they have a transition
* in the state diagram back to themselves. This is necessary because we will
* be issuing a number of clocks in this state. This set of allowed states is also
* determined by the SVF RUNTEST command's allowed states.
*/
if (wait_state != TAP_IRPAUSE && wait_state != TAP_DRPAUSE && wait_state != TAP_RESET && wait_state != TAP_IDLE)
{
LOG_ERROR("illegal XWAITSTATE wait_state: \"%s\"", tap_state_name( wait_state ));
unsupported = 1;
}
xsvf_add_statemove( wait_state );
jtag_add_clocks( clock_count );
jtag_add_sleep( usecs );
xsvf_add_statemove( end_state );
}
break;
case LCOUNT:
{
/* expected in stream:
LCOUNT <u32 loop_count>
*/
u8 count_buf[4];
if ( read(xsvf_fd, count_buf, 4) < 0 )
{
do_abort = 1;
break;
}
loop_count = be_to_h_u32(count_buf);
LOG_DEBUG("LCOUNT %d", loop_count);
}
break;
case LDELAY:
{
/* expected in stream:
LDELAY <u8 wait_state> <u32 clock_count> <u32 usecs_to_sleep>
*/
u8 state;
u8 clock_buf[4];
u8 usecs_buf[4];
if ( read(xsvf_fd, &state, 1) < 0
|| read(xsvf_fd, clock_buf, 4) < 0
|| read(xsvf_fd, usecs_buf, 4) < 0 )
{
do_abort = 1;
break;
}
loop_state = xsvf_to_tap(state);
loop_clocks = be_to_h_u32(clock_buf);
loop_usecs = be_to_h_u32(usecs_buf);
LOG_DEBUG("LDELAY %s clocks:%d usecs:%d", tap_state_name(loop_state), loop_clocks, loop_usecs);
}
break;
/* LSDR is more like XSDRTDO than it is like XSDR. It uses LDELAY which
* comes with clocks !AND! sleep requirements.
*/
case LSDR:
{
int limit = loop_count;
int matched = 0;
int attempt;
LOG_DEBUG("LSDR");
if ( xsvf_read_buffer(xsdrsize, xsvf_fd, dr_out_buf) != ERROR_OK
|| xsvf_read_buffer(xsdrsize, xsvf_fd, dr_in_buf) != ERROR_OK )
{
do_abort = 1;
break;
}
if (limit < 1)
limit = 1;
for( attempt=0; attempt<limit; ++attempt )
{
scan_field_t field;
xsvf_add_statemove( loop_state );
jtag_add_clocks(loop_clocks);
jtag_add_sleep(loop_usecs);
field.tap = tap;
field.num_bits = xsdrsize;
field.out_value = dr_out_buf;
field.out_mask = NULL;
field.in_value = NULL;
if (attempt > 0 && verbose)
LOG_USER("LSDR retry %d", attempt);
jtag_set_check_value(&field, dr_in_buf, dr_in_mask, NULL);
if (tap == NULL)
jtag_add_plain_dr_scan(1, &field, TAP_DRPAUSE);
else
jtag_add_dr_scan(1, &field, TAP_DRPAUSE);
/* LOG_DEBUG("FLUSHING QUEUE"); */
result = jtag_execute_queue();
if(result == ERROR_OK)
{
matched = 1;
break;
}
}
if (!matched )
{
LOG_USER( "LSDR mismatch" );
tdo_mismatch = 1;
break;
}
}
break;
case XTRST:
{
u8 trst_mode;
if (read(xsvf_fd, &trst_mode, 1) < 0)
{
do_abort = 1;
break;
}
switch( trst_mode )
{
case XTRST_ON:
jtag_add_reset(1, 0);
break;
case XTRST_OFF:
case XTRST_Z:
jtag_add_reset(0, 0);
break;
case XTRST_ABSENT:
break;
default:
LOG_ERROR( "XTRST mode argument (0x%02X) out of range", trst_mode );
do_abort = 1;
}
}
break;
default:
LOG_ERROR("unknown xsvf command (0x%02X)\n", uc);
unsupported = 1;
}
if (do_abort || unsupported || tdo_mismatch)
{
LOG_DEBUG("xsvf failed, setting taps to reasonable state");
/* upon error, return the TAPs to a reasonable state */
xsvf_add_statemove( TAP_IDLE );
jtag_execute_queue();
break;
}
}
if (tdo_mismatch)
{
command_print(cmd_ctx, "TDO mismatch, somewhere near offset %lu in xsvf file, aborting",
file_offset );
return ERROR_FAIL;
}
if (unsupported)
{
command_print(cmd_ctx,
"unsupported xsvf command: 0x%02X in xsvf file at offset %ld, aborting",
uc, lseek(xsvf_fd, 0, SEEK_CUR)-1 );
return ERROR_FAIL;
}
if (do_abort)
{
command_print(cmd_ctx, "premature end of xsvf file detected, aborting");
return ERROR_FAIL;
}
if (dr_out_buf)
free(dr_out_buf);
if (dr_in_buf)
free(dr_in_buf);
if (dr_in_mask)
free(dr_in_mask);
close(xsvf_fd);
command_print(cmd_ctx, "XSVF file programmed successfully");
return ERROR_OK;
}
