* 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., *
-* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
+* along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
/**
#include "mpsse.h"
#define JTAG_MODE (LSB_FIRST | POS_EDGE_IN | NEG_EDGE_OUT)
+#define JTAG_MODE_ALT (LSB_FIRST | NEG_EDGE_IN | NEG_EDGE_OUT)
#define SWD_MODE (LSB_FIRST | POS_EDGE_IN | NEG_EDGE_OUT)
static char *ftdi_device_desc;
static char *ftdi_serial;
+static char *ftdi_location;
static uint8_t ftdi_channel;
+static uint8_t ftdi_jtag_mode = JTAG_MODE;
static bool swd_mode;
static uint16_t direction;
static uint16_t jtag_output_init;
static uint16_t jtag_direction_init;
-static uint16_t swd_output_init;
-static uint16_t swd_direction_init;
-static int ftdi_swd_switch_seq(struct adiv5_dap *dap, enum swd_special_seq seq);
+static int ftdi_swd_switch_seq(enum swd_special_seq seq);
static struct signal *find_signal_by_name(const char *name)
{
0,
tms_count,
false,
- JTAG_MODE);
+ ftdi_jtag_mode);
}
static int ftdi_speed(int speed)
return retval;
}
+ if (!swd_mode && speed >= 10000000 && ftdi_jtag_mode != JTAG_MODE_ALT)
+ LOG_INFO("ftdi: if you experience problems at higher adapter clocks, try "
+ "the command \"ftdi_tdo_sample_edge falling\"");
return ERROR_OK;
}
while (i > 0) {
/* there are no state transitions in this code, so omit state tracking */
unsigned this_len = i > 7 ? 7 : i;
- mpsse_clock_tms_cs_out(mpsse_ctx, &zero, 0, this_len, false, JTAG_MODE);
+ mpsse_clock_tms_cs_out(mpsse_ctx, &zero, 0, this_len, false, ftdi_jtag_mode);
i -= this_len;
}
0,
cmd->cmd.tms->num_bits,
false,
- JTAG_MODE);
+ ftdi_jtag_mode);
}
static void ftdi_execute_pathmove(struct jtag_command *cmd)
0,
bit_count,
false,
- JTAG_MODE);
+ ftdi_jtag_mode);
bit_count = 0;
}
}
field->in_value,
0,
field->num_bits - 1,
- JTAG_MODE);
+ ftdi_jtag_mode);
uint8_t last_bit = 0;
if (field->out_value)
bit_copy(&last_bit, 0, field->out_value, field->num_bits - 1, 1);
field->num_bits - 1,
1,
last_bit,
- JTAG_MODE);
+ ftdi_jtag_mode);
tap_set_state(tap_state_transition(tap_get_state(), 1));
mpsse_clock_tms_cs_out(mpsse_ctx,
&tms_bits,
1,
1,
last_bit,
- JTAG_MODE);
+ ftdi_jtag_mode);
tap_set_state(tap_state_transition(tap_get_state(), 0));
} else
mpsse_clock_data(mpsse_ctx,
field->in_value,
0,
field->num_bits,
- JTAG_MODE);
+ ftdi_jtag_mode);
}
if (tap_get_state() != tap_get_end_state())
ftdi_set_signal(trst, '0');
else
LOG_ERROR("Can't assert TRST: nTRST signal is not defined");
- } else if (trst && cmd->cmd.reset->trst == 0) {
+ } else if (trst && jtag_get_reset_config() & RESET_HAS_TRST &&
+ cmd->cmd.reset->trst == 0) {
if (jtag_get_reset_config() & RESET_TRST_OPEN_DRAIN)
ftdi_set_signal(trst, 'z');
else
ftdi_set_signal(srst, '0');
else
LOG_ERROR("Can't assert SRST: nSRST signal is not defined");
- } else if (srst && cmd->cmd.reset->srst == 0) {
+ } else if (srst && jtag_get_reset_config() & RESET_HAS_SRST &&
+ cmd->cmd.reset->srst == 0) {
if (jtag_get_reset_config() & RESET_SRST_PUSH_PULL)
ftdi_set_signal(srst, '1');
else
while (num_cycles > 0) {
/* there are no state transitions in this code, so omit state tracking */
unsigned this_len = num_cycles > 7 ? 7 : num_cycles;
- mpsse_clock_tms_cs_out(mpsse_ctx, &tms, 0, this_len, false, JTAG_MODE);
+ mpsse_clock_tms_cs_out(mpsse_ctx, &tms, 0, this_len, false, ftdi_jtag_mode);
num_cycles -= this_len;
}
for (int i = 0; ftdi_vid[i] || ftdi_pid[i]; i++) {
mpsse_ctx = mpsse_open(&ftdi_vid[i], &ftdi_pid[i], ftdi_device_desc,
- ftdi_serial, ftdi_channel);
+ ftdi_serial, ftdi_location, ftdi_channel);
if (mpsse_ctx)
break;
}
if (!mpsse_ctx)
return ERROR_JTAG_INIT_FAILED;
- output = swd_mode ? swd_output_init : jtag_output_init;
- direction = swd_mode ? swd_direction_init : jtag_direction_init;
+ output = jtag_output_init;
+ direction = jtag_direction_init;
+
+ if (swd_mode) {
+ struct signal *sig = find_signal_by_name("SWD_EN");
+ if (!sig) {
+ LOG_ERROR("SWD mode is active but SWD_EN signal is not defined");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+ /* A dummy SWD_EN would have zero mask */
+ if (sig->data_mask)
+ ftdi_set_signal(sig, '1');
+ }
mpsse_set_data_bits_low_byte(mpsse_ctx, output & 0xff, direction & 0xff);
mpsse_set_data_bits_high_byte(mpsse_ctx, output >> 8, direction >> 8);
mpsse_loopback_config(mpsse_ctx, false);
- /* Set a low default */
- freq = mpsse_set_frequency(mpsse_ctx, 1000);
-
- if (swd_mode)
- ftdi_swd_switch_seq(NULL, JTAG_TO_SWD);
- else
- ftdi_swd_switch_seq(NULL, SWD_TO_JTAG);
+ freq = mpsse_set_frequency(mpsse_ctx, jtag_get_speed_khz() * 1000);
return mpsse_flush(mpsse_ctx);
}
{
mpsse_close(mpsse_ctx);
+ free(swd_cmd_queue);
+
return ERROR_OK;
}
return ERROR_OK;
}
+#ifdef HAVE_LIBUSB_GET_PORT_NUMBERS
+COMMAND_HANDLER(ftdi_handle_location_command)
+{
+ if (CMD_ARGC == 1) {
+ if (ftdi_location)
+ free(ftdi_location);
+ ftdi_location = strdup(CMD_ARGV[0]);
+ } else {
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+
+ return ERROR_OK;
+}
+#endif
+
COMMAND_HANDLER(ftdi_handle_channel_command)
{
if (CMD_ARGC == 1)
return ERROR_OK;
}
-COMMAND_HANDLER(ftdi_handle_layout_init_swd_command)
-{
- if (CMD_ARGC != 2)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0], swd_output_init);
- COMMAND_PARSE_NUMBER(u16, CMD_ARGV[1], swd_direction_init);
-
- return ERROR_OK;
-}
-
COMMAND_HANDLER(ftdi_handle_layout_signal_command)
{
if (CMD_ARGC < 1)
return ERROR_OK;
}
+COMMAND_HANDLER(ftdi_handle_tdo_sample_edge_command)
+{
+ Jim_Nvp *n;
+ static const Jim_Nvp nvp_ftdi_jtag_modes[] = {
+ { .name = "rising", .value = JTAG_MODE },
+ { .name = "falling", .value = JTAG_MODE_ALT },
+ { .name = NULL, .value = -1 },
+ };
+
+ if (CMD_ARGC > 0) {
+ n = Jim_Nvp_name2value_simple(nvp_ftdi_jtag_modes, CMD_ARGV[0]);
+ if (n->name == NULL)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ ftdi_jtag_mode = n->value;
+
+ }
+
+ n = Jim_Nvp_value2name_simple(nvp_ftdi_jtag_modes, ftdi_jtag_mode);
+ command_print(CMD_CTX, "ftdi samples TDO on %s edge of TCK", n->name);
+
+ return ERROR_OK;
+}
+
static const struct command_registration ftdi_command_handlers[] = {
{
.name = "ftdi_device_desc",
.help = "set the serial number of the FTDI device",
.usage = "serial_string",
},
+#ifdef HAVE_LIBUSB_GET_PORT_NUMBERS
+ {
+ .name = "ftdi_location",
+ .handler = &ftdi_handle_location_command,
+ .mode = COMMAND_CONFIG,
+ .help = "set the USB bus location of the FTDI device",
+ .usage = "<bus>:port[,port]...",
+ },
+#endif
{
.name = "ftdi_channel",
.handler = &ftdi_handle_channel_command,
.handler = &ftdi_handle_layout_init_command,
.mode = COMMAND_CONFIG,
.help = "initialize the FTDI GPIO signals used "
- "to control output-enables and reset signals"
- "when JTAG mode is selected",
- .usage = "data direction",
- },
- {
- .name = "ftdi_layout_init_swd",
- .handler = &ftdi_handle_layout_init_swd_command,
- .mode = COMMAND_CONFIG,
- .help = "initialize the FTDI GPIO signals used "
- "to control output-enables and reset signals"
- "when SWD mode is selected",
+ "to control output-enables and reset signals",
.usage = "data direction",
},
{
.help = "the vendor ID and product ID of the FTDI device",
.usage = "(vid pid)* ",
},
+ {
+ .name = "ftdi_tdo_sample_edge",
+ .handler = &ftdi_handle_tdo_sample_edge_command,
+ .mode = COMMAND_ANY,
+ .help = "set which TCK clock edge is used for sampling TDO "
+ "- default is rising-edge (Setting to falling-edge may "
+ "allow signalling speed increase)",
+ .usage = "(rising|falling)",
+ },
COMMAND_REGISTRATION_DONE
};
* @param dap
* @return
*/
-static int ftdi_swd_run_queue(struct adiv5_dap *dap)
+static int ftdi_swd_run_queue(void)
{
LOG_DEBUG("Executing %zu queued transactions", swd_cmd_queue_length);
int retval;
}
for (size_t i = 0; i < swd_cmd_queue_length; i++) {
- int ack = buf_get_u32(&swd_cmd_queue[i].trn_ack_data_parity_trn, 1, 3);
+ int ack = buf_get_u32(swd_cmd_queue[i].trn_ack_data_parity_trn, 1, 3);
LOG_DEBUG("%s %s %s reg %X = %08"PRIx32,
ack == SWD_ACK_OK ? "OK" : ack == SWD_ACK_WAIT ? "WAIT" : ack == SWD_ACK_FAULT ? "FAULT" : "JUNK",
1 + 3 + (swd_cmd_queue[i].cmd & SWD_CMD_RnW ? 0 : 1), 32));
if (ack != SWD_ACK_OK) {
- queued_retval = ack;
+ queued_retval = ack == SWD_ACK_WAIT ? ERROR_WAIT : ERROR_FAIL;
goto skip;
} else if (swd_cmd_queue[i].cmd & SWD_CMD_RnW) {
return retval;
}
-static void ftdi_swd_queue_cmd(struct adiv5_dap *dap, uint8_t cmd, uint32_t *dst, uint32_t data)
+static void ftdi_swd_queue_cmd(uint8_t cmd, uint32_t *dst, uint32_t data, uint32_t ap_delay_clk)
{
if (swd_cmd_queue_length >= swd_cmd_queue_alloced) {
/* Not enough room in the queue. Run the queue and increase its size for next time.
* Note that it's not possible to avoid running the queue here, because mpsse contains
* pointers into the queue which may be invalid after the realloc. */
- queued_retval = ftdi_swd_run_queue(dap);
+ queued_retval = ftdi_swd_run_queue();
struct swd_cmd_queue_entry *q = realloc(swd_cmd_queue, swd_cmd_queue_alloced * 2 * sizeof(*swd_cmd_queue));
if (q != NULL) {
swd_cmd_queue = q;
/* Insert idle cycles after AP accesses to avoid WAIT */
if (cmd & SWD_CMD_APnDP)
- mpsse_clock_data_out(mpsse_ctx, NULL, 0, dap->memaccess_tck, SWD_MODE);
+ mpsse_clock_data_out(mpsse_ctx, NULL, 0, ap_delay_clk, SWD_MODE);
}
-static void ftdi_swd_read_reg(struct adiv5_dap *dap, uint8_t cmd, uint32_t *value)
+static void ftdi_swd_read_reg(uint8_t cmd, uint32_t *value, uint32_t ap_delay_clk)
{
assert(cmd & SWD_CMD_RnW);
- ftdi_swd_queue_cmd(dap, cmd, value, 0);
+ ftdi_swd_queue_cmd(cmd, value, 0, ap_delay_clk);
}
-static void ftdi_swd_write_reg(struct adiv5_dap *dap, uint8_t cmd, uint32_t value)
+static void ftdi_swd_write_reg(uint8_t cmd, uint32_t value, uint32_t ap_delay_clk)
{
assert(!(cmd & SWD_CMD_RnW));
- ftdi_swd_queue_cmd(dap, cmd, NULL, value);
+ ftdi_swd_queue_cmd(cmd, NULL, value, ap_delay_clk);
}
-static int_least32_t ftdi_swd_frequency(struct adiv5_dap *dap, int_least32_t hz)
+static int_least32_t ftdi_swd_frequency(int_least32_t hz)
{
if (hz > 0)
freq = mpsse_set_frequency(mpsse_ctx, hz);
return freq;
}
-static int ftdi_swd_switch_seq(struct adiv5_dap *dap, enum swd_special_seq seq)
+static int ftdi_swd_switch_seq(enum swd_special_seq seq)
{
switch (seq) {
case LINE_RESET:
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