* 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. *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#endif
#include "jtag.h"
+#include "swd.h"
#include "interface.h"
#include <transport/transport.h>
static struct jtag_interface *jtag;
-const struct swd_driver *swd;
-
/* configuration */
struct jtag_interface *jtag_interface;
}
}
+void swd_add_reset(int req_srst)
+{
+ if (req_srst) {
+ if (!(jtag_reset_config & RESET_HAS_SRST)) {
+ LOG_ERROR("BUG: can't assert SRST");
+ jtag_set_error(ERROR_FAIL);
+ return;
+ }
+ req_srst = 1;
+ }
+
+ /* Maybe change SRST signal state */
+ if (jtag_srst != req_srst) {
+ int retval;
+
+ retval = interface_jtag_add_reset(0, req_srst);
+ if (retval != ERROR_OK)
+ jtag_set_error(retval);
+ else
+ retval = jtag_execute_queue();
+
+ if (retval != ERROR_OK) {
+ LOG_ERROR("TRST/SRST error");
+ return;
+ }
+
+ /* SRST resets everything hooked up to that signal */
+ jtag_srst = req_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);
+ }
+ }
+}
+
void jtag_add_reset(int req_tlr_or_trst, int req_srst)
{
int trst_with_tlr = 0;
/* 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
{
/*
* 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;
}
/**
if (0 == tap->expected_ids_cnt && !idcode)
return true;
- /* optionally ignore the JTAG version field */
- uint32_t mask = tap->ignore_version ? ~(0xff << 24) : ~0;
+ /* optionally ignore the JTAG version field - bits 28-31 of IDCODE */
+ uint32_t mask = tap->ignore_version ? ~(0xf << 28) : ~0;
idcode &= mask;
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;
*/
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 <= 64) {
tap->ir_length++;
}
LOG_WARNING("AUTO %s - use \"... -irlen %d\"",
* 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);
/* 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);
+ free(tap->expected);
+ free(tap->expected_ids);
+ free(tap->chip);
+ free(tap->tapname);
+ free(tap->dotted_name);
free(tap);
}
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.");
return ERROR_OK;
}
+int swd_init_reset(struct command_context *cmd_ctx)
+{
+ int 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)
+ swd_add_reset(1);
+ swd_add_reset(0);
+ retval = jtag_execute_queue();
+ return retval;
+}
int jtag_init_reset(struct command_context *cmd_ctx)
{
if ((jtag_reset_config & RESET_SRST_PULLS_TRST) == 0)
jtag_add_reset(0, 1);
}
- 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;
{
return get_current_transport() == &jtag_transport;
}
+
+void 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);
+ } else if (transport_is_swd())
+ swd_add_reset(1);
+ else if (transport_is_cmsis_dap())
+ swd_add_reset(1); /* FIXME */
+ 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");
+}
+
+void adapter_deassert_reset(void)
+{
+ if (transport_is_jtag())
+ jtag_add_reset(0, 0);
+ else if (transport_is_swd())
+ swd_add_reset(0);
+ else if (transport_is_cmsis_dap())
+ swd_add_reset(0); /* FIXME */
+ 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");
+}
projects / openocd / blobdiff