* 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/>. *
***************************************************************************/
/**
*
* This code uses information contained in the MPSSE specification which was
* found here:
- * http://www.ftdichip.com/Documents/AppNotes/AN2232C-01_MPSSE_Cmnd.pdf
+ * https://www.ftdichip.com/Support/Documents/AppNotes/AN2232C-01_MPSSE_Cmnd.pdf
* Hereafter this is called the "MPSSE Spec".
*
- * The datasheet for the ftdichip.com's FT2232D part is here:
- * http://www.ftdichip.com/Documents/DataSheets/DS_FT2232D.pdf
+ * The datasheet for the ftdichip.com's FT2232H part is here:
+ * https://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT2232H.pdf
*
* Also note the issue with code 0x4b (clock data to TMS) noted in
* http://developer.intra2net.com/mailarchive/html/libftdi/2009/msg00292.html
#endif
/* project specific includes */
+#include <jtag/adapter.h>
#include <jtag/interface.h>
+#include <jtag/swd.h>
#include <transport/transport.h>
#include <helper/time_support.h>
+#include <helper/log.h>
#if IS_CYGWIN == 1
#include <windows.h>
#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 uint8_t ftdi_channel;
+static uint8_t ftdi_jtag_mode = JTAG_MODE;
+
+static bool swd_mode;
#define MAX_USB_IDS 8
/* vid = pid = 0 marks the end of the list */
struct signal {
const char *name;
uint16_t data_mask;
+ uint16_t input_mask;
uint16_t oe_mask;
bool invert_data;
+ bool invert_input;
bool invert_oe;
struct signal *next;
};
static struct signal *signals;
+/* FIXME: Where to store per-instance data? We need an SWD context. */
+static struct swd_cmd_queue_entry {
+ uint8_t cmd;
+ uint32_t *dst;
+ uint8_t trn_ack_data_parity_trn[DIV_ROUND_UP(4 + 3 + 32 + 1 + 4, 8)];
+} *swd_cmd_queue;
+static size_t swd_cmd_queue_length;
+static size_t swd_cmd_queue_alloced;
+static int queued_retval;
+static int freq;
+
static uint16_t output;
static uint16_t direction;
+static uint16_t jtag_output_init;
+static uint16_t jtag_direction_init;
+
+static int ftdi_swd_switch_seq(enum swd_special_seq seq);
static struct signal *find_signal_by_name(const char *name)
{
psig = &(*psig)->next;
*psig = calloc(1, sizeof(**psig));
- if (*psig == NULL)
+ if (!*psig)
return NULL;
(*psig)->name = strdup(name);
- if ((*psig)->name == NULL) {
+ if (!(*psig)->name) {
free(*psig);
*psig = NULL;
}
return ERROR_FAIL;
}
+ uint16_t old_output = output;
+ uint16_t old_direction = direction;
+
output = data ? output | s->data_mask : output & ~s->data_mask;
if (s->oe_mask == s->data_mask)
direction = oe ? direction | s->oe_mask : direction & ~s->oe_mask;
else
output = oe ? output | s->oe_mask : output & ~s->oe_mask;
- mpsse_set_data_bits_low_byte(mpsse_ctx, output & 0xff, direction & 0xff);
- mpsse_set_data_bits_high_byte(mpsse_ctx, output >> 8, direction >> 8);
+ if ((output & 0xff) != (old_output & 0xff) || (direction & 0xff) != (old_direction & 0xff))
+ mpsse_set_data_bits_low_byte(mpsse_ctx, output & 0xff, direction & 0xff);
+ if ((output >> 8 != old_output >> 8) || (direction >> 8 != old_direction >> 8))
+ mpsse_set_data_bits_high_byte(mpsse_ctx, output >> 8, direction >> 8);
return ERROR_OK;
}
+static int ftdi_get_signal(const struct signal *s, uint16_t *value_out)
+{
+ uint8_t data_low = 0;
+ uint8_t data_high = 0;
+
+ if (s->input_mask == 0) {
+ LOG_ERROR("interface doesn't provide signal '%s'", s->name);
+ return ERROR_FAIL;
+ }
+
+ if (s->input_mask & 0xff)
+ mpsse_read_data_bits_low_byte(mpsse_ctx, &data_low);
+ if (s->input_mask >> 8)
+ mpsse_read_data_bits_high_byte(mpsse_ctx, &data_high);
+
+ mpsse_flush(mpsse_ctx);
+
+ *value_out = (((uint16_t)data_high) << 8) | data_low;
+
+ if (s->invert_input)
+ *value_out = ~(*value_out);
+
+ *value_out &= s->input_mask;
+
+ return ERROR_OK;
+}
/**
* Function move_to_state
int tms_count = tap_get_tms_path_len(start_state, goal_state);
assert(tms_count <= 8);
- DEBUG_JTAG_IO("start=%s goal=%s", tap_state_name(start_state), tap_state_name(goal_state));
+ LOG_DEBUG_IO("start=%s goal=%s", tap_state_name(start_state), tap_state_name(goal_state));
/* Track state transitions step by step */
for (int i = 0; i < tms_count; i++)
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;
}
int i;
uint8_t zero = 0;
- DEBUG_JTAG_IO("runtest %i cycles, end in %s",
+ LOG_DEBUG_IO("runtest %i cycles, end in %s",
cmd->cmd.runtest->num_cycles,
tap_state_name(cmd->cmd.runtest->end_state));
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;
}
if (tap_get_state() != tap_get_end_state())
move_to_state(tap_get_end_state());
- DEBUG_JTAG_IO("runtest: %i, end in %s",
+ LOG_DEBUG_IO("runtest: %i, end in %s",
cmd->cmd.runtest->num_cycles,
tap_state_name(tap_get_end_state()));
}
static void ftdi_execute_statemove(struct jtag_command *cmd)
{
- DEBUG_JTAG_IO("statemove end in %s",
+ LOG_DEBUG_IO("statemove end in %s",
tap_state_name(cmd->cmd.statemove->end_state));
ftdi_end_state(cmd->cmd.statemove->end_state);
*/
static void ftdi_execute_tms(struct jtag_command *cmd)
{
- DEBUG_JTAG_IO("TMS: %d bits", cmd->cmd.tms->num_bits);
+ LOG_DEBUG_IO("TMS: %d bits", cmd->cmd.tms->num_bits);
/* TODO: Missing tap state tracking, also missing from ft2232.c! */
mpsse_clock_tms_cs_out(mpsse_ctx,
0,
cmd->cmd.tms->num_bits,
false,
- JTAG_MODE);
+ ftdi_jtag_mode);
}
static void ftdi_execute_pathmove(struct jtag_command *cmd)
tap_state_t *path = cmd->cmd.pathmove->path;
int num_states = cmd->cmd.pathmove->num_states;
- DEBUG_JTAG_IO("pathmove: %i states, current: %s end: %s", num_states,
+ LOG_DEBUG_IO("pathmove: %i states, current: %s end: %s", num_states,
tap_state_name(tap_get_state()),
tap_state_name(path[num_states-1]));
unsigned bit_count = 0;
uint8_t tms_byte = 0;
- DEBUG_JTAG_IO("-");
+ LOG_DEBUG_IO("-");
/* this loop verifies that the path is legal and logs each state in the path */
while (num_states--) {
0,
bit_count,
false,
- JTAG_MODE);
+ ftdi_jtag_mode);
bit_count = 0;
}
}
static void ftdi_execute_scan(struct jtag_command *cmd)
{
- DEBUG_JTAG_IO("%s type:%d", cmd->cmd.scan->ir_scan ? "IRSCAN" : "DRSCAN",
+ LOG_DEBUG_IO("%s type:%d", cmd->cmd.scan->ir_scan ? "IRSCAN" : "DRSCAN",
jtag_scan_type(cmd->cmd.scan));
/* Make sure there are no trailing fields with num_bits == 0, or the logic below will fail. */
while (cmd->cmd.scan->num_fields > 0
&& cmd->cmd.scan->fields[cmd->cmd.scan->num_fields - 1].num_bits == 0) {
cmd->cmd.scan->num_fields--;
- LOG_DEBUG("discarding trailing empty field");
+ LOG_DEBUG_IO("discarding trailing empty field");
}
if (cmd->cmd.scan->num_fields == 0) {
- LOG_DEBUG("empty scan, doing nothing");
+ LOG_DEBUG_IO("empty scan, doing nothing");
return;
}
for (int i = 0; i < cmd->cmd.scan->num_fields; i++, field++) {
scan_size += field->num_bits;
- DEBUG_JTAG_IO("%s%s field %d/%d %d bits",
+ LOG_DEBUG_IO("%s%s field %d/%d %d bits",
field->in_value ? "in" : "",
field->out_value ? "out" : "",
i,
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);
- uint8_t tms_bits = 0x01;
+
+ /* If endstate is TAP_IDLE, clock out 1-1-0 (->EXIT1 ->UPDATE ->IDLE)
+ * Otherwise, clock out 1-0 (->EXIT1 ->PAUSE)
+ */
+ uint8_t tms_bits = 0x03;
mpsse_clock_tms_cs(mpsse_ctx,
&tms_bits,
0,
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);
- tap_set_state(tap_state_transition(tap_get_state(), 0));
+ if (tap_get_end_state() == TAP_IDLE) {
+ mpsse_clock_tms_cs_out(mpsse_ctx,
+ &tms_bits,
+ 1,
+ 2,
+ last_bit,
+ ftdi_jtag_mode);
+ tap_set_state(tap_state_transition(tap_get_state(), 1));
+ tap_set_state(tap_state_transition(tap_get_state(), 0));
+ } else {
+ mpsse_clock_tms_cs_out(mpsse_ctx,
+ &tms_bits,
+ 2,
+ 1,
+ last_bit,
+ ftdi_jtag_mode);
+ tap_set_state(tap_state_transition(tap_get_state(), 0));
+ }
} else
mpsse_clock_data(mpsse_ctx,
field->out_value,
field->in_value,
0,
field->num_bits,
- JTAG_MODE);
+ ftdi_jtag_mode);
}
if (tap_get_state() != tap_get_end_state())
move_to_state(tap_get_end_state());
- DEBUG_JTAG_IO("%s scan, %i bits, end in %s",
+ LOG_DEBUG_IO("%s scan, %i bits, end in %s",
(cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size,
tap_state_name(tap_get_end_state()));
}
-static void ftdi_execute_reset(struct jtag_command *cmd)
+static int ftdi_reset(int trst, int srst)
{
- DEBUG_JTAG_IO("reset trst: %i srst %i",
- cmd->cmd.reset->trst, cmd->cmd.reset->srst);
-
- if (cmd->cmd.reset->trst == 1
- || (cmd->cmd.reset->srst
- && (jtag_get_reset_config() & RESET_SRST_PULLS_TRST)))
- tap_set_state(TAP_RESET);
-
- struct signal *trst = find_signal_by_name("nTRST");
- if (cmd->cmd.reset->trst == 1) {
- if (trst)
- 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) {
- if (jtag_get_reset_config() & RESET_TRST_OPEN_DRAIN)
- ftdi_set_signal(trst, 'z');
- else
- ftdi_set_signal(trst, '1');
+ struct signal *sig_ntrst = find_signal_by_name("nTRST");
+ struct signal *sig_nsrst = find_signal_by_name("nSRST");
+
+ LOG_DEBUG_IO("reset trst: %i srst %i", trst, srst);
+
+ if (!swd_mode) {
+ if (trst == 1) {
+ if (sig_ntrst)
+ ftdi_set_signal(sig_ntrst, '0');
+ else
+ LOG_ERROR("Can't assert TRST: nTRST signal is not defined");
+ } else if (sig_ntrst && jtag_get_reset_config() & RESET_HAS_TRST &&
+ trst == 0) {
+ if (jtag_get_reset_config() & RESET_TRST_OPEN_DRAIN)
+ ftdi_set_signal(sig_ntrst, 'z');
+ else
+ ftdi_set_signal(sig_ntrst, '1');
+ }
}
- struct signal *srst = find_signal_by_name("nSRST");
- if (cmd->cmd.reset->srst == 1) {
- if (srst)
- ftdi_set_signal(srst, '0');
+ if (srst == 1) {
+ if (sig_nsrst)
+ ftdi_set_signal(sig_nsrst, '0');
else
LOG_ERROR("Can't assert SRST: nSRST signal is not defined");
- } else if (srst && cmd->cmd.reset->srst == 0) {
+ } else if (sig_nsrst && jtag_get_reset_config() & RESET_HAS_SRST &&
+ srst == 0) {
if (jtag_get_reset_config() & RESET_SRST_PUSH_PULL)
- ftdi_set_signal(srst, '1');
+ ftdi_set_signal(sig_nsrst, '1');
else
- ftdi_set_signal(srst, 'z');
+ ftdi_set_signal(sig_nsrst, 'z');
}
- DEBUG_JTAG_IO("trst: %i, srst: %i",
- cmd->cmd.reset->trst, cmd->cmd.reset->srst);
+ return mpsse_flush(mpsse_ctx);
}
static void ftdi_execute_sleep(struct jtag_command *cmd)
{
- DEBUG_JTAG_IO("sleep %" PRIi32, cmd->cmd.sleep->us);
+ LOG_DEBUG_IO("sleep %" PRIu32, cmd->cmd.sleep->us);
mpsse_flush(mpsse_ctx);
jtag_sleep(cmd->cmd.sleep->us);
- DEBUG_JTAG_IO("sleep %" PRIi32 " usec while in %s",
+ LOG_DEBUG_IO("sleep %" PRIu32 " usec while in %s",
cmd->cmd.sleep->us,
tap_state_name(tap_get_state()));
}
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;
}
- DEBUG_JTAG_IO("clocks %i while in %s",
+ LOG_DEBUG_IO("clocks %i while in %s",
cmd->cmd.stableclocks->num_cycles,
tap_state_name(tap_get_state()));
}
static void ftdi_execute_command(struct jtag_command *cmd)
{
switch (cmd->type) {
- case JTAG_RESET:
- ftdi_execute_reset(cmd);
- break;
case JTAG_RUNTEST:
ftdi_execute_runtest(cmd);
break;
else
LOG_DEBUG("ftdi interface using shortest path jtag state transitions");
+ if (!ftdi_vid[0] && !ftdi_pid[0]) {
+ LOG_ERROR("Please specify ftdi vid_pid");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
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, adapter_usb_get_location(), ftdi_channel);
if (mpsse_ctx)
break;
}
if (!mpsse_ctx)
return ERROR_JTAG_INIT_FAILED;
+ 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);
+ freq = mpsse_set_frequency(mpsse_ctx, jtag_get_speed_khz() * 1000);
+
return mpsse_flush(mpsse_ctx);
}
{
mpsse_close(mpsse_ctx);
+ struct signal *sig = signals;
+ while (sig) {
+ struct signal *next = sig->next;
+ free((void *)sig->name);
+ free(sig);
+ sig = next;
+ }
+
+ free(ftdi_device_desc);
+ free(ftdi_serial);
+
+ free(swd_cmd_queue);
+
return ERROR_OK;
}
COMMAND_HANDLER(ftdi_handle_device_desc_command)
{
if (CMD_ARGC == 1) {
- if (ftdi_device_desc)
- free(ftdi_device_desc);
+ free(ftdi_device_desc);
ftdi_device_desc = strdup(CMD_ARGV[0]);
} else {
- LOG_ERROR("expected exactly one argument to ftdi_device_desc <description>");
+ LOG_ERROR("expected exactly one argument to ftdi device_desc <description>");
}
return ERROR_OK;
COMMAND_HANDLER(ftdi_handle_serial_command)
{
if (CMD_ARGC == 1) {
- if (ftdi_serial)
- free(ftdi_serial);
+ free(ftdi_serial);
ftdi_serial = strdup(CMD_ARGV[0]);
} else {
return ERROR_COMMAND_SYNTAX_ERROR;
if (CMD_ARGC != 2)
return ERROR_COMMAND_SYNTAX_ERROR;
- COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0], output);
- COMMAND_PARSE_NUMBER(u16, CMD_ARGV[1], direction);
+ COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0], jtag_output_init);
+ COMMAND_PARSE_NUMBER(u16, CMD_ARGV[1], jtag_direction_init);
return ERROR_OK;
}
bool invert_data = false;
uint16_t data_mask = 0;
+ bool invert_input = false;
+ uint16_t input_mask = 0;
bool invert_oe = false;
uint16_t oe_mask = 0;
for (unsigned i = 1; i < CMD_ARGC; i += 2) {
} else if (strcmp("-ndata", CMD_ARGV[i]) == 0) {
invert_data = true;
COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], data_mask);
+ } else if (strcmp("-input", CMD_ARGV[i]) == 0) {
+ invert_input = false;
+ COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], input_mask);
+ } else if (strcmp("-ninput", CMD_ARGV[i]) == 0) {
+ invert_input = true;
+ COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], input_mask);
} else if (strcmp("-oe", CMD_ARGV[i]) == 0) {
invert_oe = false;
COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], oe_mask);
} else if (strcmp("-noe", CMD_ARGV[i]) == 0) {
invert_oe = true;
COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], oe_mask);
+ } else if (!strcmp("-alias", CMD_ARGV[i]) ||
+ !strcmp("-nalias", CMD_ARGV[i])) {
+ if (!strcmp("-nalias", CMD_ARGV[i])) {
+ invert_data = true;
+ invert_input = true;
+ }
+ struct signal *sig = find_signal_by_name(CMD_ARGV[i + 1]);
+ if (!sig) {
+ LOG_ERROR("signal %s is not defined", CMD_ARGV[i + 1]);
+ return ERROR_FAIL;
+ }
+ data_mask = sig->data_mask;
+ input_mask = sig->input_mask;
+ oe_mask = sig->oe_mask;
+ invert_input ^= sig->invert_input;
+ invert_oe = sig->invert_oe;
+ invert_data ^= sig->invert_data;
} else {
LOG_ERROR("unknown option '%s'", CMD_ARGV[i]);
return ERROR_COMMAND_SYNTAX_ERROR;
sig->invert_data = invert_data;
sig->data_mask = data_mask;
+ sig->invert_input = invert_input;
+ sig->input_mask = input_mask;
sig->invert_oe = invert_oe;
sig->oe_mask = oe_mask;
ftdi_set_signal(sig, *CMD_ARGV[1]);
break;
}
+ /* fallthrough */
default:
LOG_ERROR("unknown signal level '%s', use 0, 1 or z", CMD_ARGV[1]);
return ERROR_COMMAND_SYNTAX_ERROR;
return mpsse_flush(mpsse_ctx);
}
+COMMAND_HANDLER(ftdi_handle_get_signal_command)
+{
+ if (CMD_ARGC < 1)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ struct signal *sig;
+ uint16_t sig_data = 0;
+ sig = find_signal_by_name(CMD_ARGV[0]);
+ if (!sig) {
+ LOG_ERROR("interface configuration doesn't define signal '%s'", CMD_ARGV[0]);
+ return ERROR_FAIL;
+ }
+
+ int ret = ftdi_get_signal(sig, &sig_data);
+ if (ret != ERROR_OK)
+ return ret;
+
+ LOG_USER("Signal %s = %#06x", sig->name, sig_data);
+
+ return ERROR_OK;
+}
+
COMMAND_HANDLER(ftdi_handle_vid_pid_command)
{
if (CMD_ARGC > MAX_USB_IDS * 2) {
- LOG_WARNING("ignoring extra IDs in ftdi_vid_pid "
+ LOG_WARNING("ignoring extra IDs in ftdi vid_pid "
"(maximum is %d pairs)", MAX_USB_IDS);
CMD_ARGC = MAX_USB_IDS * 2;
}
if (CMD_ARGC < 2 || (CMD_ARGC & 1)) {
- LOG_WARNING("incomplete ftdi_vid_pid configuration directive");
+ LOG_WARNING("incomplete ftdi vid_pid configuration directive");
if (CMD_ARGC < 2)
return ERROR_COMMAND_SYNTAX_ERROR;
/* remove the incomplete trailing id */
/*
* Explicitly terminate, in case there are multiples instances of
- * ftdi_vid_pid.
+ * ftdi vid_pid.
*/
ftdi_vid[i >> 1] = ftdi_pid[i >> 1] = 0;
return ERROR_OK;
}
-static const struct command_registration ftdi_command_handlers[] = {
+COMMAND_HANDLER(ftdi_handle_tdo_sample_edge_command)
+{
+ struct jim_nvp *n;
+ static const struct 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)
+ 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, "ftdi samples TDO on %s edge of TCK", n->name);
+
+ return ERROR_OK;
+}
+
+static const struct command_registration ftdi_subcommand_handlers[] = {
{
- .name = "ftdi_device_desc",
+ .name = "device_desc",
.handler = &ftdi_handle_device_desc_command,
.mode = COMMAND_CONFIG,
.help = "set the USB device description of the FTDI device",
.usage = "description_string",
},
{
- .name = "ftdi_serial",
+ .name = "serial",
.handler = &ftdi_handle_serial_command,
.mode = COMMAND_CONFIG,
.help = "set the serial number of the FTDI device",
.usage = "serial_string",
},
{
- .name = "ftdi_channel",
+ .name = "channel",
.handler = &ftdi_handle_channel_command,
.mode = COMMAND_CONFIG,
.help = "set the channel of the FTDI device that is used as JTAG",
.usage = "(0-3)",
},
{
- .name = "ftdi_layout_init",
+ .name = "layout_init",
.handler = &ftdi_handle_layout_init_command,
.mode = COMMAND_CONFIG,
.help = "initialize the FTDI GPIO signals used "
.usage = "data direction",
},
{
- .name = "ftdi_layout_signal",
+ .name = "layout_signal",
.handler = &ftdi_handle_layout_signal_command,
.mode = COMMAND_ANY,
.help = "define a signal controlled by one or more FTDI GPIO as data "
"and/or output enable",
- .usage = "name [-data mask|-ndata mask] [-oe mask|-noe mask]",
+ .usage = "name [-data mask|-ndata mask] [-oe mask|-noe mask] [-alias|-nalias name]",
},
{
- .name = "ftdi_set_signal",
+ .name = "set_signal",
.handler = &ftdi_handle_set_signal_command,
.mode = COMMAND_EXEC,
.help = "control a layout-specific signal",
.usage = "name (1|0|z)",
},
{
- .name = "ftdi_vid_pid",
+ .name = "get_signal",
+ .handler = &ftdi_handle_get_signal_command,
+ .mode = COMMAND_EXEC,
+ .help = "read the value of a layout-specific signal",
+ .usage = "name",
+ },
+ {
+ .name = "vid_pid",
.handler = &ftdi_handle_vid_pid_command,
.mode = COMMAND_CONFIG,
.help = "the vendor ID and product ID of the FTDI device",
- .usage = "(vid pid)* ",
+ .usage = "(vid pid)*",
+ },
+ {
+ .name = "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
};
-struct jtag_interface ftdi_interface = {
- .name = "ftdi",
+static const struct command_registration ftdi_command_handlers[] = {
+ {
+ .name = "ftdi",
+ .mode = COMMAND_ANY,
+ .help = "perform ftdi management",
+ .chain = ftdi_subcommand_handlers,
+ .usage = "",
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+static int create_default_signal(const char *name, uint16_t data_mask)
+{
+ struct signal *sig = create_signal(name);
+ if (!sig) {
+ LOG_ERROR("failed to create signal %s", name);
+ return ERROR_FAIL;
+ }
+ sig->invert_data = false;
+ sig->data_mask = data_mask;
+ sig->invert_oe = false;
+ sig->oe_mask = 0;
+
+ return ERROR_OK;
+}
+
+static int create_signals(void)
+{
+ if (create_default_signal("TCK", 0x01) != ERROR_OK)
+ return ERROR_FAIL;
+ if (create_default_signal("TDI", 0x02) != ERROR_OK)
+ return ERROR_FAIL;
+ if (create_default_signal("TDO", 0x04) != ERROR_OK)
+ return ERROR_FAIL;
+ if (create_default_signal("TMS", 0x08) != ERROR_OK)
+ return ERROR_FAIL;
+ return ERROR_OK;
+}
+
+static int ftdi_swd_init(void)
+{
+ LOG_INFO("FTDI SWD mode enabled");
+ swd_mode = true;
+
+ if (create_signals() != ERROR_OK)
+ return ERROR_FAIL;
+
+ swd_cmd_queue_alloced = 10;
+ swd_cmd_queue = malloc(swd_cmd_queue_alloced * sizeof(*swd_cmd_queue));
+
+ return swd_cmd_queue ? ERROR_OK : ERROR_FAIL;
+}
+
+static void ftdi_swd_swdio_en(bool enable)
+{
+ struct signal *oe = find_signal_by_name("SWDIO_OE");
+ if (oe) {
+ if (oe->data_mask)
+ ftdi_set_signal(oe, enable ? '1' : '0');
+ else {
+ /* Sets TDI/DO pin to input during rx when both pins are connected
+ to SWDIO */
+ if (enable)
+ direction |= jtag_direction_init & 0x0002U;
+ else
+ direction &= ~0x0002U;
+ mpsse_set_data_bits_low_byte(mpsse_ctx, output & 0xff, direction & 0xff);
+ }
+ }
+}
+
+/**
+ * Flush the MPSSE queue and process the SWD transaction queue
+ * @return
+ */
+static int ftdi_swd_run_queue(void)
+{
+ LOG_DEBUG_IO("Executing %zu queued transactions", swd_cmd_queue_length);
+ int retval;
+ struct signal *led = find_signal_by_name("LED");
+
+ if (queued_retval != ERROR_OK) {
+ LOG_DEBUG_IO("Skipping due to previous errors: %d", queued_retval);
+ goto skip;
+ }
+
+ /* A transaction must be followed by another transaction or at least 8 idle cycles to
+ * ensure that data is clocked through the AP. */
+ mpsse_clock_data_out(mpsse_ctx, NULL, 0, 8, SWD_MODE);
+
+ /* Terminate the "blink", if the current layout has that feature */
+ if (led)
+ ftdi_set_signal(led, '0');
+
+ queued_retval = mpsse_flush(mpsse_ctx);
+ if (queued_retval != ERROR_OK) {
+ LOG_ERROR("MPSSE failed");
+ goto skip;
+ }
+
+ 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);
+
+ LOG_DEBUG_IO("%s %s %s reg %X = %08"PRIx32,
+ ack == SWD_ACK_OK ? "OK" : ack == SWD_ACK_WAIT ? "WAIT" : ack == SWD_ACK_FAULT ? "FAULT" : "JUNK",
+ swd_cmd_queue[i].cmd & SWD_CMD_APNDP ? "AP" : "DP",
+ swd_cmd_queue[i].cmd & SWD_CMD_RNW ? "read" : "write",
+ (swd_cmd_queue[i].cmd & SWD_CMD_A32) >> 1,
+ buf_get_u32(swd_cmd_queue[i].trn_ack_data_parity_trn,
+ 1 + 3 + (swd_cmd_queue[i].cmd & SWD_CMD_RNW ? 0 : 1), 32));
+
+ if (ack != SWD_ACK_OK) {
+ queued_retval = ack == SWD_ACK_WAIT ? ERROR_WAIT : ERROR_FAIL;
+ goto skip;
+
+ } else if (swd_cmd_queue[i].cmd & SWD_CMD_RNW) {
+ uint32_t data = buf_get_u32(swd_cmd_queue[i].trn_ack_data_parity_trn, 1 + 3, 32);
+ int parity = buf_get_u32(swd_cmd_queue[i].trn_ack_data_parity_trn, 1 + 3 + 32, 1);
+
+ if (parity != parity_u32(data)) {
+ LOG_ERROR("SWD Read data parity mismatch");
+ queued_retval = ERROR_FAIL;
+ goto skip;
+ }
+
+ if (swd_cmd_queue[i].dst)
+ *swd_cmd_queue[i].dst = data;
+ }
+ }
+
+skip:
+ swd_cmd_queue_length = 0;
+ retval = queued_retval;
+ queued_retval = ERROR_OK;
+
+ /* Queue a new "blink" */
+ if (led && retval == ERROR_OK)
+ ftdi_set_signal(led, '1');
+
+ return retval;
+}
+
+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();
+ struct swd_cmd_queue_entry *q = realloc(swd_cmd_queue, swd_cmd_queue_alloced * 2 * sizeof(*swd_cmd_queue));
+ if (q) {
+ swd_cmd_queue = q;
+ swd_cmd_queue_alloced *= 2;
+ LOG_DEBUG("Increased SWD command queue to %zu elements", swd_cmd_queue_alloced);
+ }
+ }
+
+ if (queued_retval != ERROR_OK)
+ return;
+
+ size_t i = swd_cmd_queue_length++;
+ swd_cmd_queue[i].cmd = cmd | SWD_CMD_START | SWD_CMD_PARK;
+
+ mpsse_clock_data_out(mpsse_ctx, &swd_cmd_queue[i].cmd, 0, 8, SWD_MODE);
+
+ if (swd_cmd_queue[i].cmd & SWD_CMD_RNW) {
+ /* Queue a read transaction */
+ swd_cmd_queue[i].dst = dst;
+
+ ftdi_swd_swdio_en(false);
+ mpsse_clock_data_in(mpsse_ctx, swd_cmd_queue[i].trn_ack_data_parity_trn,
+ 0, 1 + 3 + 32 + 1 + 1, SWD_MODE);
+ ftdi_swd_swdio_en(true);
+ } else {
+ /* Queue a write transaction */
+ ftdi_swd_swdio_en(false);
+
+ mpsse_clock_data_in(mpsse_ctx, swd_cmd_queue[i].trn_ack_data_parity_trn,
+ 0, 1 + 3 + 1, SWD_MODE);
+
+ ftdi_swd_swdio_en(true);
+
+ buf_set_u32(swd_cmd_queue[i].trn_ack_data_parity_trn, 1 + 3 + 1, 32, data);
+ buf_set_u32(swd_cmd_queue[i].trn_ack_data_parity_trn, 1 + 3 + 1 + 32, 1, parity_u32(data));
+
+ mpsse_clock_data_out(mpsse_ctx, swd_cmd_queue[i].trn_ack_data_parity_trn,
+ 1 + 3 + 1, 32 + 1, SWD_MODE);
+ }
+
+ /* Insert idle cycles after AP accesses to avoid WAIT */
+ if (cmd & SWD_CMD_APNDP)
+ mpsse_clock_data_out(mpsse_ctx, NULL, 0, ap_delay_clk, SWD_MODE);
+
+}
+
+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(cmd, value, 0, ap_delay_clk);
+}
+
+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(cmd, NULL, value, ap_delay_clk);
+}
+
+static int ftdi_swd_switch_seq(enum swd_special_seq seq)
+{
+ switch (seq) {
+ case LINE_RESET:
+ LOG_DEBUG("SWD line reset");
+ ftdi_swd_swdio_en(true);
+ mpsse_clock_data_out(mpsse_ctx, swd_seq_line_reset, 0, swd_seq_line_reset_len, SWD_MODE);
+ break;
+ case JTAG_TO_SWD:
+ LOG_DEBUG("JTAG-to-SWD");
+ ftdi_swd_swdio_en(true);
+ mpsse_clock_data_out(mpsse_ctx, swd_seq_jtag_to_swd, 0, swd_seq_jtag_to_swd_len, SWD_MODE);
+ break;
+ case SWD_TO_JTAG:
+ LOG_DEBUG("SWD-to-JTAG");
+ ftdi_swd_swdio_en(true);
+ mpsse_clock_data_out(mpsse_ctx, swd_seq_swd_to_jtag, 0, swd_seq_swd_to_jtag_len, SWD_MODE);
+ break;
+ default:
+ LOG_ERROR("Sequence %d not supported", seq);
+ return ERROR_FAIL;
+ }
+
+ return ERROR_OK;
+}
+
+static const struct swd_driver ftdi_swd = {
+ .init = ftdi_swd_init,
+ .switch_seq = ftdi_swd_switch_seq,
+ .read_reg = ftdi_swd_read_reg,
+ .write_reg = ftdi_swd_write_reg,
+ .run = ftdi_swd_run_queue,
+};
+
+static const char * const ftdi_transports[] = { "jtag", "swd", NULL };
+
+static struct jtag_interface ftdi_interface = {
.supported = DEBUG_CAP_TMS_SEQ,
+ .execute_queue = ftdi_execute_queue,
+};
+
+struct adapter_driver ftdi_adapter_driver = {
+ .name = "ftdi",
+ .transports = ftdi_transports,
.commands = ftdi_command_handlers,
- .transports = jtag_only,
.init = ftdi_initialize,
.quit = ftdi_quit,
+ .reset = ftdi_reset,
.speed = ftdi_speed,
- .speed_div = ftdi_speed_div,
.khz = ftdi_khz,
- .execute_queue = ftdi_execute_queue,
+ .speed_div = ftdi_speed_div,
+
+ .jtag_ops = &ftdi_interface,
+ .swd_ops = &ftdi_swd,
};
Code Review / openocd.git / blobdiff