* 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. *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#endif
#include "jtag.h"
+#include "swd.h"
#include "interface.h"
#include <transport/transport.h>
+#include <helper/jep106.h>
+#include "helper/system.h"
#ifdef HAVE_STRINGS_H
#include <strings.h>
#include "svf/svf.h"
#include "xsvf/xsvf.h"
+/* ipdbg are utilities to debug IP-cores. It uses JTAG for transport. */
+#include "server/ipdbg.h"
+
/** The number of JTAG queue flushes (for profiling and debugging purposes). */
static int jtag_flush_queue_count;
* List all TAPs that have been created.
*/
static struct jtag_tap *__jtag_all_taps;
-/**
- * The number of TAPs in the __jtag_all_taps list, used to track the
- * assigned chain position to new TAPs
- */
-static unsigned jtag_num_taps;
static enum reset_types jtag_reset_config = RESET_NONE;
tap_state_t cmd_queue_cur_state = TAP_RESET;
* when an event occurs.
*/
struct jtag_event_callback {
- /* / a event callback */
+ /** a event callback */
jtag_event_handler_t callback;
- /* / the private data to pass to the callback */
+ /** the private data to pass to the callback */
void *priv;
- /* / the next callback */
+ /** the next callback */
struct jtag_event_callback *next;
};
static enum {CLOCK_MODE_UNSELECTED, CLOCK_MODE_KHZ, CLOCK_MODE_RCLK} clock_mode;
static int jtag_speed;
-static struct jtag_interface *jtag;
+/* FIXME: change name to this variable, it is not anymore JTAG only */
+static struct adapter_driver *jtag;
-const struct swd_driver *swd;
-
-/* configuration */
-struct jtag_interface *jtag_interface;
+extern struct adapter_driver *adapter_driver;
void jtag_set_flush_queue_sleep(int ms)
{
* It is also implicitly disabled while TRST is active and
* while SRST is gating the JTAG clock.
*/
+ if (!transport_is_jtag())
+ return jtag_poll;
+
if (!jtag_poll || jtag_trst != 0)
return false;
return jtag_srst == 0 || (jtag_reset_config & RESET_SRST_NO_GATING);
unsigned jtag_tap_count(void)
{
- return jtag_num_taps;
+ struct jtag_tap *t = jtag_all_taps();
+ unsigned n = 0;
+ while (t) {
+ n++;
+ t = t->next_tap;
+ }
+ return n;
}
unsigned jtag_tap_count_enabled(void)
return n;
}
-/* / Append a new TAP to the chain of all taps. */
-void jtag_tap_add(struct jtag_tap *t)
+/** Append a new TAP to the chain of all taps. */
+static void jtag_tap_add(struct jtag_tap *t)
{
- t->abs_chain_position = jtag_num_taps++;
+ unsigned jtag_num_taps = 0;
struct jtag_tap **tap = &__jtag_all_taps;
- while (*tap != NULL)
+ while (*tap != NULL) {
+ jtag_num_taps++;
tap = &(*tap)->next_tap;
+ }
*tap = t;
+ t->abs_chain_position = jtag_num_taps;
}
/* returns a pointer to the n-th device in the scan chain */
for (int i = 0; i < in_num_fields; i++) {
if ((in_fields[i].check_value != NULL) && (in_fields[i].in_value != NULL)) {
- /* this is synchronous for a minidriver */
jtag_add_callback4(jtag_check_value_mask_callback,
(jtag_callback_data_t)in_fields[i].in_value,
(jtag_callback_data_t)in_fields[i].check_value,
/**
* If supported by the underlying adapter, this clocks a raw bit sequence
- * onto TMS for switching betwen JTAG and SWD modes.
+ * onto TMS for switching between JTAG and SWD modes.
*
* DO NOT use this to bypass the integrity checks and logging provided
* by the jtag_add_pathmove() and jtag_add_statemove() calls.
{
int retval;
- if (!(jtag->supported & DEBUG_CAP_TMS_SEQ))
+ if (!(jtag->jtag_ops->supported & DEBUG_CAP_TMS_SEQ))
return ERROR_JTAG_NOT_IMPLEMENTED;
jtag_checks();
}
}
-void jtag_add_reset(int req_tlr_or_trst, int req_srst)
+static int adapter_system_reset(int req_srst)
+{
+ int retval;
+
+ if (req_srst) {
+ if (!(jtag_reset_config & RESET_HAS_SRST)) {
+ LOG_ERROR("BUG: can't assert SRST");
+ return ERROR_FAIL;
+ }
+ req_srst = 1;
+ }
+
+ /* Maybe change SRST signal state */
+ if (jtag_srst != req_srst) {
+ retval = jtag->reset(0, req_srst);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("SRST error");
+ return ERROR_FAIL;
+ }
+ jtag_srst = req_srst;
+
+ if (req_srst) {
+ LOG_DEBUG("SRST line asserted");
+ if (adapter_nsrst_assert_width)
+ jtag_sleep(adapter_nsrst_assert_width * 1000);
+ } else {
+ LOG_DEBUG("SRST line released");
+ if (adapter_nsrst_delay)
+ jtag_sleep(adapter_nsrst_delay * 1000);
+ }
+ }
+
+ return ERROR_OK;
+}
+
+static void legacy_jtag_add_reset(int req_tlr_or_trst, int req_srst)
{
int trst_with_tlr = 0;
int new_srst = 0;
}
}
+/* FIXME: name is misleading; we do not plan to "add" reset into jtag queue */
+void jtag_add_reset(int req_tlr_or_trst, int req_srst)
+{
+ int retval;
+ int trst_with_tlr = 0;
+ int new_srst = 0;
+ int new_trst = 0;
+
+ if (!jtag->reset) {
+ legacy_jtag_add_reset(req_tlr_or_trst, req_srst);
+ return;
+ }
+
+ /* Without SRST, we must use target-specific JTAG operations
+ * on each target; callers should not be requesting SRST when
+ * that signal doesn't exist.
+ *
+ * RESET_SRST_PULLS_TRST is a board or chip level quirk, which
+ * can kick in even if the JTAG adapter can't drive TRST.
+ */
+ if (req_srst) {
+ if (!(jtag_reset_config & RESET_HAS_SRST)) {
+ LOG_ERROR("BUG: can't assert SRST");
+ jtag_set_error(ERROR_FAIL);
+ return;
+ }
+ if ((jtag_reset_config & RESET_SRST_PULLS_TRST) != 0
+ && !req_tlr_or_trst) {
+ LOG_ERROR("BUG: can't assert only SRST");
+ jtag_set_error(ERROR_FAIL);
+ return;
+ }
+ new_srst = 1;
+ }
+
+ /* JTAG reset (entry to TAP_RESET state) can always be achieved
+ * using TCK and TMS; that may go through a TAP_{IR,DR}UPDATE
+ * state first. TRST accelerates it, and bypasses those states.
+ *
+ * RESET_TRST_PULLS_SRST is a board or chip level quirk, which
+ * can kick in even if the JTAG adapter can't drive SRST.
+ */
+ if (req_tlr_or_trst) {
+ if (!(jtag_reset_config & RESET_HAS_TRST))
+ trst_with_tlr = 1;
+ else if ((jtag_reset_config & RESET_TRST_PULLS_SRST) != 0
+ && !req_srst)
+ trst_with_tlr = 1;
+ else
+ new_trst = 1;
+ }
+
+ /* Maybe change TRST and/or SRST signal state */
+ if (jtag_srst != new_srst || jtag_trst != new_trst) {
+ /* guarantee jtag queue empty before changing reset status */
+ jtag_execute_queue();
+
+ retval = jtag->reset(new_trst, new_srst);
+ if (retval != ERROR_OK) {
+ jtag_set_error(retval);
+ LOG_ERROR("TRST/SRST error");
+ return;
+ }
+ }
+
+ /* SRST resets everything hooked up to that signal */
+ if (jtag_srst != new_srst) {
+ jtag_srst = new_srst;
+ if (jtag_srst) {
+ LOG_DEBUG("SRST line asserted");
+ if (adapter_nsrst_assert_width)
+ jtag_add_sleep(adapter_nsrst_assert_width * 1000);
+ } else {
+ LOG_DEBUG("SRST line released");
+ if (adapter_nsrst_delay)
+ jtag_add_sleep(adapter_nsrst_delay * 1000);
+ }
+ }
+
+ /* Maybe enter the JTAG TAP_RESET state ...
+ * - using only TMS, TCK, and the JTAG state machine
+ * - or else more directly, using TRST
+ *
+ * TAP_RESET should be invisible to non-debug parts of the system.
+ */
+ if (trst_with_tlr) {
+ LOG_DEBUG("JTAG reset with TLR instead of TRST");
+ jtag_add_tlr();
+ jtag_execute_queue();
+
+ } else if (jtag_trst != new_trst) {
+ jtag_trst = new_trst;
+ if (jtag_trst) {
+ LOG_DEBUG("TRST line asserted");
+ tap_set_state(TAP_RESET);
+ if (jtag_ntrst_assert_width)
+ jtag_add_sleep(jtag_ntrst_assert_width * 1000);
+ } else {
+ LOG_DEBUG("TRST line released");
+ if (jtag_ntrst_delay)
+ jtag_add_sleep(jtag_ntrst_delay * 1000);
+
+ /* We just asserted nTRST, so we're now in TAP_RESET.
+ * Inform possible listeners about this, now that
+ * JTAG instructions and data can be shifted. This
+ * sequence must match jtag_add_tlr().
+ */
+ jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
+ jtag_notify_event(JTAG_TRST_ASSERTED);
+ }
+ }
+}
+
void jtag_add_sleep(uint32_t us)
{
- /* / @todo Here, keep_alive() appears to be a layering violation!!! */
+ /** @todo Here, keep_alive() appears to be a layering violation!!! */
keep_alive();
jtag_set_error(interface_jtag_add_sleep(us));
}
/* NOTE: we've lost diagnostic context here -- 'which tap' */
- captured_str = buf_to_str(captured, bits, 16);
- in_check_value_str = buf_to_str(in_check_value, bits, 16);
+ captured_str = buf_to_hex_str(captured, bits);
+ in_check_value_str = buf_to_hex_str(in_check_value, bits);
LOG_WARNING("Bad value '%s' captured during DR or IR scan:",
captured_str);
if (in_check_mask) {
char *in_check_mask_str;
- in_check_mask_str = buf_to_str(in_check_mask, bits, 16);
+ in_check_mask_str = buf_to_hex_str(in_check_mask, bits);
LOG_WARNING(" check_mask: 0x%s", in_check_mask_str);
free(in_check_mask_str);
}
return ERROR_FAIL;
}
- return jtag->execute_queue();
+ if (!transport_is_jtag()) {
+ /*
+ * FIXME: This should not happen!
+ * There could be old code that queues jtag commands with non jtag interfaces so, for
+ * the moment simply highlight it by log an error and return on empty execute_queue.
+ * We should fix it quitting with assert(0) because it is an internal error.
+ * The fix can be applied immediately after next release (v0.11.0 ?)
+ */
+ LOG_ERROR("JTAG API jtag_execute_queue() called on non JTAG interface");
+ if (!jtag->jtag_ops || !jtag->jtag_ops->execute_queue)
+ return ERROR_OK;
+ }
+
+ int result = jtag->jtag_ops->execute_queue();
+
+ struct jtag_command *cmd = jtag_command_queue;
+ while (debug_level >= LOG_LVL_DEBUG_IO && cmd) {
+ switch (cmd->type) {
+ case JTAG_SCAN:
+ LOG_DEBUG_IO("JTAG %s SCAN to %s",
+ cmd->cmd.scan->ir_scan ? "IR" : "DR",
+ tap_state_name(cmd->cmd.scan->end_state));
+ for (int i = 0; i < cmd->cmd.scan->num_fields; i++) {
+ struct scan_field *field = cmd->cmd.scan->fields + i;
+ if (field->out_value) {
+ char *str = buf_to_hex_str(field->out_value, field->num_bits);
+ LOG_DEBUG_IO(" %db out: %s", field->num_bits, str);
+ free(str);
+ }
+ if (field->in_value) {
+ char *str = buf_to_hex_str(field->in_value, field->num_bits);
+ LOG_DEBUG_IO(" %db in: %s", field->num_bits, str);
+ free(str);
+ }
+ }
+ break;
+ case JTAG_TLR_RESET:
+ LOG_DEBUG_IO("JTAG TLR RESET to %s",
+ tap_state_name(cmd->cmd.statemove->end_state));
+ break;
+ case JTAG_RUNTEST:
+ LOG_DEBUG_IO("JTAG RUNTEST %d cycles to %s",
+ cmd->cmd.runtest->num_cycles,
+ tap_state_name(cmd->cmd.runtest->end_state));
+ break;
+ case JTAG_RESET:
+ {
+ const char *reset_str[3] = {
+ "leave", "deassert", "assert"
+ };
+ LOG_DEBUG_IO("JTAG RESET %s TRST, %s SRST",
+ reset_str[cmd->cmd.reset->trst + 1],
+ reset_str[cmd->cmd.reset->srst + 1]);
+ }
+ break;
+ case JTAG_PATHMOVE:
+ LOG_DEBUG_IO("JTAG PATHMOVE (TODO)");
+ break;
+ case JTAG_SLEEP:
+ LOG_DEBUG_IO("JTAG SLEEP (TODO)");
+ break;
+ case JTAG_STABLECLOCKS:
+ LOG_DEBUG_IO("JTAG STABLECLOCKS (TODO)");
+ break;
+ case JTAG_TMS:
+ LOG_DEBUG_IO("JTAG TMS (TODO)");
+ break;
+ default:
+ LOG_ERROR("Unknown JTAG command: %d", cmd->type);
+ break;
+ }
+ cmd = cmd->next;
+ }
+
+ return result;
}
void jtag_execute_queue_noclear(void)
alive_sleep((us+999)/1000);
}
-/* Maximum number of enabled JTAG devices we expect in the scan chain,
- * plus one (to detect garbage at the end). Devices that don't support
- * IDCODE take up fewer bits, possibly allowing a few more devices.
- */
-#define JTAG_MAX_CHAIN_SIZE 20
+#define JTAG_MAX_AUTO_TAPS 20
+#define EXTRACT_JEP106_BANK(X) (((X) & 0xf00) >> 8)
+#define EXTRACT_JEP106_ID(X) (((X) & 0xfe) >> 1)
#define EXTRACT_MFG(X) (((X) & 0xffe) >> 1)
#define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
#define EXTRACT_VER(X) (((X) & 0xf0000000) >> 28)
/* A reserved manufacturer ID is used in END_OF_CHAIN_FLAG, so we
* know that no valid TAP will have it as an IDCODE value.
*/
-#define END_OF_CHAIN_FLAG 0x000000ff
+#define END_OF_CHAIN_FLAG 0xffffffff
/* a larger IR length than we ever expect to autoprobe */
#define JTAG_IRLEN_MAX 60
};
/* initialize to the end of chain ID value */
- for (unsigned i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
+ for (unsigned i = 0; i < num_idcode; i++)
buf_set_u32(idcode_buffer, i * 32, 32, END_OF_CHAIN_FLAG);
jtag_add_plain_dr_scan(field.num_bits, field.out_value, field.in_value, TAP_DRPAUSE);
{
log_printf_lf(level, __FILE__, __LINE__, __func__,
"JTAG tap: %s %16.16s: 0x%08x "
- "(mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
+ "(mfg: 0x%3.3x (%s), part: 0x%4.4x, ver: 0x%1.1x)",
name, msg,
(unsigned int)idcode,
(unsigned int)EXTRACT_MFG(idcode),
+ jep106_manufacturer(EXTRACT_JEP106_BANK(idcode), EXTRACT_JEP106_ID(idcode)),
(unsigned int)EXTRACT_PART(idcode),
(unsigned int)EXTRACT_VER(idcode));
}
{
/*
* Some devices, such as AVR8, will output all 1's instead
- * of TDI input value at end of chain. Allow those values
+ * of TDI input value at end of chain. Allow those values
* instead of failing.
*/
- return idcode == END_OF_CHAIN_FLAG || idcode == 0xFFFFFFFF;
+ return idcode == END_OF_CHAIN_FLAG;
}
/**
static bool jtag_examine_chain_match_tap(const struct jtag_tap *tap)
{
- uint32_t idcode = tap->idcode;
- /* ignore expected BYPASS codes; warn otherwise */
- if (0 == tap->expected_ids_cnt && !idcode)
+ if (tap->expected_ids_cnt == 0 || !tap->hasidcode)
return true;
- /* optionally ignore the JTAG version field */
- uint32_t mask = tap->ignore_version ? ~(0xff << 24) : ~0;
-
- idcode &= mask;
+ /* optionally ignore the JTAG version field - bits 28-31 of IDCODE */
+ uint32_t mask = tap->ignore_version ? ~(0xfU << 28) : ~0U;
+ uint32_t idcode = tap->idcode & mask;
/* Loop over the expected identification codes and test for a match */
- unsigned ii, limit = tap->expected_ids_cnt;
-
- for (ii = 0; ii < limit; ii++) {
+ for (unsigned ii = 0; ii < tap->expected_ids_cnt; ii++) {
uint32_t expected = tap->expected_ids[ii] & mask;
if (idcode == expected)
/* If none of the expected ids matched, warn */
jtag_examine_chain_display(LOG_LVL_WARNING, "UNEXPECTED",
tap->dotted_name, tap->idcode);
- for (ii = 0; ii < limit; ii++) {
+ for (unsigned ii = 0; ii < tap->expected_ids_cnt; ii++) {
char msg[32];
- snprintf(msg, sizeof(msg), "expected %u of %u", ii + 1, limit);
+ snprintf(msg, sizeof(msg), "expected %u of %u", ii + 1, tap->expected_ids_cnt);
jtag_examine_chain_display(LOG_LVL_ERROR, msg,
tap->dotted_name, tap->expected_ids[ii]);
}
*/
static int jtag_examine_chain(void)
{
- uint8_t idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
- unsigned bit_count;
int retval;
- int tapcount = 0;
- bool autoprobe = false;
+ unsigned max_taps = jtag_tap_count();
+
+ /* Autoprobe up to this many. */
+ if (max_taps < JTAG_MAX_AUTO_TAPS)
+ max_taps = JTAG_MAX_AUTO_TAPS;
+
+ /* Add room for end-of-chain marker. */
+ max_taps++;
+
+ uint8_t *idcode_buffer = calloc(4, max_taps);
+ if (idcode_buffer == NULL)
+ return ERROR_JTAG_INIT_FAILED;
/* DR scan to collect BYPASS or IDCODE register contents.
* Then make sure the scan data has both ones and zeroes.
*/
LOG_DEBUG("DR scan interrogation for IDCODE/BYPASS");
- retval = jtag_examine_chain_execute(idcode_buffer, JTAG_MAX_CHAIN_SIZE);
+ retval = jtag_examine_chain_execute(idcode_buffer, max_taps);
if (retval != ERROR_OK)
- return retval;
- if (!jtag_examine_chain_check(idcode_buffer, JTAG_MAX_CHAIN_SIZE))
- return ERROR_JTAG_INIT_FAILED;
+ goto out;
+ if (!jtag_examine_chain_check(idcode_buffer, max_taps)) {
+ retval = ERROR_JTAG_INIT_FAILED;
+ goto out;
+ }
- /* point at the 1st tap */
+ /* Point at the 1st predefined tap, if any */
struct jtag_tap *tap = jtag_tap_next_enabled(NULL);
- if (!tap)
- autoprobe = true;
-
- for (bit_count = 0;
- tap && bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;
- tap = jtag_tap_next_enabled(tap)) {
+ unsigned bit_count = 0;
+ unsigned autocount = 0;
+ for (unsigned i = 0; i < max_taps; i++) {
+ assert(bit_count < max_taps * 32);
uint32_t idcode = buf_get_u32(idcode_buffer, bit_count, 32);
+ /* No predefined TAP? Auto-probe. */
+ if (tap == NULL) {
+ /* Is there another TAP? */
+ if (jtag_idcode_is_final(idcode))
+ break;
+
+ /* Default everything in this TAP except IR length.
+ *
+ * REVISIT create a jtag_alloc(chip, tap) routine, and
+ * share it with jim_newtap_cmd().
+ */
+ tap = calloc(1, sizeof(*tap));
+ if (!tap) {
+ retval = ERROR_FAIL;
+ goto out;
+ }
+
+ tap->chip = alloc_printf("auto%u", autocount++);
+ tap->tapname = strdup("tap");
+ tap->dotted_name = alloc_printf("%s.%s", tap->chip, tap->tapname);
+
+ tap->ir_length = 0; /* ... signifying irlen autoprobe */
+ tap->ir_capture_mask = 0x03;
+ tap->ir_capture_value = 0x01;
+
+ tap->enabled = true;
+
+ jtag_tap_init(tap);
+ }
+
if ((idcode & 1) == 0) {
/* Zero for LSB indicates a device in bypass */
- LOG_INFO("TAP %s does not have IDCODE",
- tap->dotted_name);
- idcode = 0;
+ LOG_INFO("TAP %s does not have valid IDCODE (idcode=0x%" PRIx32 ")",
+ tap->dotted_name, idcode);
tap->hasidcode = false;
+ tap->idcode = 0;
bit_count += 1;
} else {
/* Friendly devices support IDCODE */
tap->hasidcode = true;
- jtag_examine_chain_display(LOG_LVL_INFO,
- "tap/device found",
- tap->dotted_name, idcode);
+ tap->idcode = idcode;
+ jtag_examine_chain_display(LOG_LVL_INFO, "tap/device found", tap->dotted_name, idcode);
bit_count += 32;
}
- tap->idcode = idcode;
/* ensure the TAP ID matches what was expected */
if (!jtag_examine_chain_match_tap(tap))
retval = ERROR_JTAG_INIT_SOFT_FAIL;
- }
-
- /* Fail if too many TAPs were enabled for us to verify them all. */
- if (tap) {
- LOG_ERROR("Too many TAPs enabled; '%s' ignored.",
- tap->dotted_name);
- return ERROR_JTAG_INIT_FAILED;
- }
-
- /* if autoprobing, the tap list is still empty ... populate it! */
- while (autoprobe && bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31) {
- uint32_t idcode;
- char buf[12];
-
- /* Is there another TAP? */
- idcode = buf_get_u32(idcode_buffer, bit_count, 32);
- if (jtag_idcode_is_final(idcode))
- break;
-
- /* Default everything in this TAP except IR length.
- *
- * REVISIT create a jtag_alloc(chip, tap) routine, and
- * share it with jim_newtap_cmd().
- */
- tap = calloc(1, sizeof *tap);
- if (!tap)
- return ERROR_FAIL;
-
- sprintf(buf, "auto%d", tapcount++);
- tap->chip = strdup(buf);
- tap->tapname = strdup("tap");
-
- sprintf(buf, "%s.%s", tap->chip, tap->tapname);
- tap->dotted_name = strdup(buf);
-
- /* tap->ir_length == 0 ... signifying irlen autoprobe */
- tap->ir_capture_mask = 0x03;
- tap->ir_capture_value = 0x01;
- tap->enabled = true;
-
- if ((idcode & 1) == 0) {
- bit_count += 1;
- tap->hasidcode = false;
- } else {
- bit_count += 32;
- tap->hasidcode = true;
- tap->idcode = idcode;
-
- tap->expected_ids_cnt = 1;
- tap->expected_ids = malloc(sizeof(uint32_t));
- tap->expected_ids[0] = idcode;
- }
-
- LOG_WARNING("AUTO %s - use \"jtag newtap "
- "%s %s -expected-id 0x%8.8" PRIx32 " ...\"",
- tap->dotted_name, tap->chip, tap->tapname,
- tap->idcode);
-
- jtag_tap_init(tap);
+ tap = jtag_tap_next_enabled(tap);
}
/* After those IDCODE or BYPASS register values should be
* only the data we fed into the scan chain.
*/
- if (jtag_examine_chain_end(idcode_buffer, bit_count,
- 8 * sizeof(idcode_buffer))) {
- LOG_ERROR("double-check your JTAG setup (interface, "
- "speed, missing TAPs, ...)");
- return ERROR_JTAG_INIT_FAILED;
+ if (jtag_examine_chain_end(idcode_buffer, bit_count, max_taps * 32)) {
+ LOG_ERROR("double-check your JTAG setup (interface, speed, ...)");
+ retval = ERROR_JTAG_INIT_FAILED;
+ goto out;
}
/* Return success or, for backwards compatibility if only
* some IDCODE values mismatched, a soft/continuable fault.
*/
+out:
+ free(idcode_buffer);
return retval;
}
int total_ir_length = 0;
uint8_t *ir_test = NULL;
struct scan_field field;
- int val;
+ uint64_t val;
int chain_pos = 0;
int retval;
- /* when autoprobing, accomodate huge IR lengths */
+ /* when autoprobing, accommodate huge IR lengths */
for (tap = NULL, total_ir_length = 0;
(tap = jtag_tap_next_enabled(tap)) != NULL;
total_ir_length += tap->ir_length) {
* least two bits. Guessing will fail if (a) any TAP does
* not conform to the JTAG spec; or (b) when the upper bits
* captured from some conforming TAP are nonzero. Or if
- * (c) an IR length is longer than 32 bits -- which is only
+ * (c) an IR length is longer than JTAG_IRLEN_MAX bits,
* an implementation limit, which could someday be raised.
*
* REVISIT optimization: if there's a *single* TAP we can
*/
if (tap->ir_length == 0) {
tap->ir_length = 2;
- while ((val = buf_get_u32(ir_test, chain_pos, tap->ir_length + 1)) == 1
- && tap->ir_length <= 32) {
+ while ((val = buf_get_u64(ir_test, chain_pos, tap->ir_length + 1)) == 1
+ && tap->ir_length < JTAG_IRLEN_MAX) {
tap->ir_length++;
}
- LOG_WARNING("AUTO %s - use \"... -irlen %d\"",
- jtag_tap_name(tap), tap->ir_length);
+ LOG_WARNING("AUTO %s - use \"jtag newtap %s %s -irlen %d "
+ "-expected-id 0x%08" PRIx32 "\"",
+ tap->dotted_name, tap->chip, tap->tapname, tap->ir_length, tap->idcode);
}
/* Validate the two LSBs, which must be 01 per JTAG spec.
* this part of the JTAG spec, so their capture mask/value
* attributes might disable this test.
*/
- val = buf_get_u32(ir_test, chain_pos, tap->ir_length);
+ val = buf_get_u64(ir_test, chain_pos, tap->ir_length);
if ((val & tap->ir_capture_mask) != tap->ir_capture_value) {
- LOG_ERROR("%s: IR capture error; saw 0x%0*x not 0x%0*x",
+ LOG_ERROR("%s: IR capture error; saw 0x%0*" PRIx64 " not 0x%0*" PRIx32,
jtag_tap_name(tap),
- (tap->ir_length + 7) / tap->ir_length,
- val,
- (tap->ir_length + 7) / tap->ir_length,
- (unsigned) tap->ir_capture_value);
+ (tap->ir_length + 7) / tap->ir_length, val,
+ (tap->ir_length + 7) / tap->ir_length, tap->ir_capture_value);
retval = ERROR_JTAG_INIT_FAILED;
goto done;
}
- LOG_DEBUG("%s: IR capture 0x%0*x", jtag_tap_name(tap),
+ LOG_DEBUG("%s: IR capture 0x%0*" PRIx64, jtag_tap_name(tap),
(tap->ir_length + 7) / tap->ir_length, val);
chain_pos += tap->ir_length;
}
/* verify the '11' sentinel we wrote is returned at the end */
- val = buf_get_u32(ir_test, chain_pos, 2);
+ val = buf_get_u64(ir_test, chain_pos, 2);
if (val != 0x3) {
- char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
+ char *cbuf = buf_to_hex_str(ir_test, total_ir_length);
LOG_ERROR("IR capture error at bit %d, saw 0x%s not 0x...3",
chain_pos, cbuf);
tap->expected_mask = calloc(1, ir_len_bytes);
tap->cur_instr = malloc(ir_len_bytes);
- /* / @todo cope better with ir_length bigger than 32 bits */
+ /** @todo cope better with ir_length bigger than 32 bits */
if (ir_len_bits > 32)
ir_len_bits = 32;
/* register the reset callback for the TAP */
jtag_register_event_callback(&jtag_reset_callback, tap);
+ jtag_tap_add(tap);
LOG_DEBUG("Created Tap: %s @ abs position %d, "
- "irlen %d, capture: 0x%x mask: 0x%x", tap->dotted_name,
- tap->abs_chain_position, tap->ir_length,
- (unsigned) tap->ir_capture_value,
- (unsigned) tap->ir_capture_mask);
- jtag_tap_add(tap);
+ "irlen %d, capture: 0x%x mask: 0x%x", tap->dotted_name,
+ tap->abs_chain_position, tap->ir_length,
+ (unsigned) tap->ir_capture_value,
+ (unsigned) tap->ir_capture_mask);
}
void jtag_tap_free(struct jtag_tap *tap)
{
jtag_unregister_event_callback(&jtag_reset_callback, tap);
- /* / @todo is anything missing? no memory leaks please */
- free((void *)tap->expected);
- free((void *)tap->expected_ids);
- free((void *)tap->chip);
- free((void *)tap->tapname);
- free((void *)tap->dotted_name);
+ struct jtag_tap_event_action *jteap = tap->event_action;
+ while (jteap) {
+ struct jtag_tap_event_action *next = jteap->next;
+ Jim_DecrRefCount(jteap->interp, jteap->body);
+ free(jteap);
+ jteap = next;
+ }
+
+ free(tap->expected);
+ free(tap->expected_mask);
+ free(tap->expected_ids);
+ free(tap->cur_instr);
+ free(tap->chip);
+ free(tap->tapname);
+ free(tap->dotted_name);
free(tap);
}
if (jtag)
return ERROR_OK;
- if (!jtag_interface) {
- /* nothing was previously specified by "interface" command */
+ if (!adapter_driver) {
+ /* nothing was previously specified by "adapter driver" command */
LOG_ERROR("Debug Adapter has to be specified, "
- "see \"interface\" command");
+ "see \"adapter driver\" command");
return ERROR_JTAG_INVALID_INTERFACE;
}
int retval;
- retval = jtag_interface->init();
+ retval = adapter_driver->init();
if (retval != ERROR_OK)
return retval;
- jtag = jtag_interface;
+ jtag = adapter_driver;
- /* LEGACY SUPPORT ... adapter drivers must declare what
- * transports they allow. Until they all do so, assume
- * the legacy drivers are JTAG-only
- */
- if (!transports_are_declared()) {
- LOG_ERROR("Adapter driver '%s' did not declare "
- "which transports it allows; assuming "
- "JTAG-only", jtag->name);
- retval = allow_transports(cmd_ctx, jtag_only);
- if (retval != ERROR_OK)
- return retval;
+ if (jtag->speed == NULL) {
+ LOG_INFO("This adapter doesn't support configurable speed");
+ return ERROR_OK;
}
if (CLOCK_MODE_UNSELECTED == clock_mode) {
LOG_ERROR("An adapter speed is not selected in the init script."
- " Insert a call to adapter_khz or jtag_rclk to proceed.");
+ " Insert a call to \"adapter speed\" or \"jtag_rclk\" to proceed.");
return ERROR_JTAG_INIT_FAILED;
}
int adapter_quit(void)
{
- if (!jtag || !jtag->quit)
- return ERROR_OK;
+ if (jtag && jtag->quit) {
+ /* close the JTAG interface */
+ int result = jtag->quit();
+ if (ERROR_OK != result)
+ LOG_ERROR("failed: %d", result);
+ }
- /* close the JTAG interface */
- int result = jtag->quit();
- if (ERROR_OK != result)
- LOG_ERROR("failed: %d", result);
+ struct jtag_tap *t = jtag_all_taps();
+ while (t) {
+ struct jtag_tap *n = t->next_tap;
+ jtag_tap_free(t);
+ t = n;
+ }
return ERROR_OK;
}
+int swd_init_reset(struct command_context *cmd_ctx)
+{
+ int retval, retval1;
+
+ retval = adapter_init(cmd_ctx);
+ if (retval != ERROR_OK)
+ return retval;
+
+ LOG_DEBUG("Initializing with hard SRST reset");
+
+ if (jtag_reset_config & RESET_HAS_SRST)
+ retval = adapter_system_reset(1);
+ retval1 = adapter_system_reset(0);
+
+ return (retval == ERROR_OK) ? retval1 : retval;
+}
int jtag_init_reset(struct command_context *cmd_ctx)
{
* REVISIT once Tcl code can read the reset_config modes, this won't
* need to be a C routine at all...
*/
- jtag_add_reset(1, 0); /* TAP_RESET, using TMS+TCK or TRST */
if (jtag_reset_config & RESET_HAS_SRST) {
jtag_add_reset(1, 1);
if ((jtag_reset_config & RESET_SRST_PULLS_TRST) == 0)
jtag_add_reset(0, 1);
+ } else {
+ jtag_add_reset(1, 0); /* TAP_RESET, using TMS+TCK or TRST */
}
- jtag_add_reset(0, 0);
+
+ /* some targets enable us to connect with srst asserted */
+ if (jtag_reset_config & RESET_CNCT_UNDER_SRST) {
+ if (jtag_reset_config & RESET_SRST_NO_GATING)
+ jtag_add_reset(0, 1);
+ else {
+ LOG_WARNING("\'srst_nogate\' reset_config option is required");
+ jtag_add_reset(0, 0);
+ }
+ } else
+ jtag_add_reset(0, 0);
retval = jtag_execute_queue();
if (retval != ERROR_OK)
return retval;
/* guard against oddball hardware: force resets to be inactive */
jtag_add_reset(0, 0);
+
+ /* some targets enable us to connect with srst asserted */
+ if (jtag_reset_config & RESET_CNCT_UNDER_SRST) {
+ if (jtag_reset_config & RESET_SRST_NO_GATING)
+ jtag_add_reset(0, 1);
+ else
+ LOG_WARNING("\'srst_nogate\' reset_config option is required");
+ }
retval = jtag_execute_queue();
if (retval != ERROR_OK)
return retval;
{
LOG_DEBUG("convert khz to interface specific speed value");
speed_khz = khz;
- if (jtag != NULL) {
- LOG_DEBUG("have interface set up");
- int speed_div1;
- int retval = jtag->khz(jtag_get_speed_khz(), &speed_div1);
- if (ERROR_OK != retval)
- return retval;
- *speed = speed_div1;
+ if (!jtag)
+ return ERROR_OK;
+ LOG_DEBUG("have interface set up");
+ if (!jtag->khz) {
+ LOG_ERROR("Translation from khz to jtag_speed not implemented");
+ return ERROR_FAIL;
}
+ int speed_div1;
+ int retval = jtag->khz(jtag_get_speed_khz(), &speed_div1);
+ if (ERROR_OK != retval)
+ return retval;
+ *speed = speed_div1;
return ERROR_OK;
}
int retval = jtag_get_speed(&jtag_speed_var);
if (retval != ERROR_OK)
return retval;
- return jtag ? jtag->speed_div(jtag_speed_var, khz) : ERROR_OK;
+ if (!jtag)
+ return ERROR_OK;
+ if (!jtag->speed_div) {
+ LOG_ERROR("Translation from jtag_speed to khz not implemented");
+ return ERROR_FAIL;
+ }
+ return jtag->speed_div(jtag_speed_var, khz);
}
void jtag_set_verify(bool enable)
jtag_verify = enable;
}
-bool jtag_will_verify()
+bool jtag_will_verify(void)
{
return jtag_verify;
}
jtag_verify_capture_ir = enable;
}
-bool jtag_will_verify_capture_ir()
+bool jtag_will_verify_capture_ir(void)
{
return jtag_verify_capture_ir;
}
LOG_ERROR("No Valid JTAG Interface Configured.");
exit(-1);
}
- return jtag->power_dropout(dropout);
+ if (jtag->power_dropout)
+ return jtag->power_dropout(dropout);
+
+ *dropout = 0; /* by default we can't detect power dropout */
+ return ERROR_OK;
}
int jtag_srst_asserted(int *srst_asserted)
{
- return jtag->srst_asserted(srst_asserted);
+ if (jtag->srst_asserted)
+ return jtag->srst_asserted(srst_asserted);
+
+ *srst_asserted = 0; /* by default we can't detect srst asserted */
+ return ERROR_OK;
}
enum reset_types jtag_get_reset_config(void)
int jtag_get_trst(void)
{
- return jtag_trst;
+ return jtag_trst == 1;
}
int jtag_get_srst(void)
{
- return jtag_srst;
+ return jtag_srst == 1;
}
void jtag_set_nsrst_delay(unsigned delay)
if (retval != ERROR_OK)
return retval;
- return xsvf_register_commands(ctx);
+ retval = xsvf_register_commands(ctx);
+
+ if (retval != ERROR_OK)
+ return retval;
+
+ return ipdbg_register_commands(ctx);
}
static struct transport jtag_transport = {
{
return get_current_transport() == &jtag_transport;
}
+
+int adapter_resets(int trst, int srst)
+{
+ if (get_current_transport() == NULL) {
+ LOG_ERROR("transport is not selected");
+ return ERROR_FAIL;
+ }
+
+ if (transport_is_jtag()) {
+ if (srst == SRST_ASSERT && !(jtag_reset_config & RESET_HAS_SRST)) {
+ LOG_ERROR("adapter has no srst signal");
+ return ERROR_FAIL;
+ }
+
+ /* adapters without trst signal will eventually use tlr sequence */
+ jtag_add_reset(trst, srst);
+ /*
+ * The jtag queue is still used for reset by some adapter. Flush it!
+ * FIXME: To be removed when all adapter drivers will be updated!
+ */
+ jtag_execute_queue();
+ return ERROR_OK;
+ } else if (transport_is_swd() || transport_is_hla() ||
+ transport_is_dapdirect_swd() || transport_is_dapdirect_jtag() ||
+ transport_is_swim()) {
+ if (trst == TRST_ASSERT) {
+ LOG_ERROR("transport %s has no trst signal",
+ get_current_transport()->name);
+ return ERROR_FAIL;
+ }
+
+ if (srst == SRST_ASSERT && !(jtag_reset_config & RESET_HAS_SRST)) {
+ LOG_ERROR("adapter has no srst signal");
+ return ERROR_FAIL;
+ }
+ adapter_system_reset(srst);
+ return ERROR_OK;
+ }
+
+ if (trst == TRST_DEASSERT && srst == SRST_DEASSERT)
+ return ERROR_OK;
+
+ LOG_ERROR("reset is not supported on transport %s",
+ get_current_transport()->name);
+
+ return ERROR_FAIL;
+}
+
+int adapter_assert_reset(void)
+{
+ if (transport_is_jtag()) {
+ if (jtag_reset_config & RESET_SRST_PULLS_TRST)
+ jtag_add_reset(1, 1);
+ else
+ jtag_add_reset(0, 1);
+ return ERROR_OK;
+ } else if (transport_is_swd() || transport_is_hla() ||
+ transport_is_dapdirect_jtag() || transport_is_dapdirect_swd() ||
+ transport_is_swim())
+ return adapter_system_reset(1);
+ else if (get_current_transport() != NULL)
+ LOG_ERROR("reset is not supported on %s",
+ get_current_transport()->name);
+ else
+ LOG_ERROR("transport is not selected");
+ return ERROR_FAIL;
+}
+
+int adapter_deassert_reset(void)
+{
+ if (transport_is_jtag()) {
+ jtag_add_reset(0, 0);
+ return ERROR_OK;
+ } else if (transport_is_swd() || transport_is_hla() ||
+ transport_is_dapdirect_jtag() || transport_is_dapdirect_swd() ||
+ transport_is_swim())
+ return adapter_system_reset(0);
+ else if (get_current_transport() != NULL)
+ LOG_ERROR("reset is not supported on %s",
+ get_current_transport()->name);
+ else
+ LOG_ERROR("transport is not selected");
+ return ERROR_FAIL;
+}
+
+int adapter_config_trace(bool enabled, enum tpiu_pin_protocol pin_protocol,
+ uint32_t port_size, unsigned int *trace_freq,
+ unsigned int traceclkin_freq, uint16_t *prescaler)
+{
+ if (jtag->config_trace) {
+ return jtag->config_trace(enabled, pin_protocol, port_size, trace_freq,
+ traceclkin_freq, prescaler);
+ } else if (enabled) {
+ LOG_ERROR("The selected interface does not support tracing");
+ return ERROR_FAIL;
+ }
+
+ return ERROR_OK;
+}
+
+int adapter_poll_trace(uint8_t *buf, size_t *size)
+{
+ if (jtag->poll_trace)
+ return jtag->poll_trace(buf, size);
+
+ return ERROR_FAIL;
+}