|
- /**************************************************************************
- * Copyright (C) 2012 by Andreas Fritiofson *
- * andreas.fritiofson@gmail.com *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * 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. *
- ***************************************************************************/
-
- /**
- * @file
- * JTAG adapters based on the FT2232 full and high speed USB parts are
- * popular low cost JTAG debug solutions. Many FT2232 based JTAG adapters
- * are discrete, but development boards may integrate them as alternatives
- * to more capable (and expensive) third party JTAG pods.
- *
- * JTAG uses only one of the two communications channels ("MPSSE engines")
- * on these devices. Adapters based on FT4232 parts have four ports/channels
- * (A/B/C/D), instead of just two (A/B).
- *
- * Especially on development boards integrating one of these chips (as
- * opposed to discrete pods/dongles), the additional channels can be used
- * for a variety of purposes, but OpenOCD only uses one channel at a time.
- *
- * - As a USB-to-serial adapter for the target's console UART ...
- * which may be able to support ROM boot loaders that load initial
- * firmware images to flash (or SRAM).
- *
- * - On systems which support ARM's SWD in addition to JTAG, or instead
- * of it, that second port can be used for reading SWV/SWO trace data.
- *
- * - Additional JTAG links, e.g. to a CPLD or * FPGA.
- *
- * FT2232 based JTAG adapters are "dumb" not "smart", because most JTAG
- * request/response interactions involve round trips over the USB link.
- * A "smart" JTAG adapter has intelligence close to the scan chain, so it
- * can for example poll quickly for a status change (usually taking on the
- * order of microseconds not milliseconds) before beginning a queued
- * transaction which require the previous one to have completed.
- *
- * There are dozens of adapters of this type, differing in details which
- * this driver needs to understand. Those "layout" details are required
- * as part of FT2232 driver configuration.
- *
- * This code uses information contained in the MPSSE specification which was
- * found here:
- * http://www.ftdichip.com/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
- *
- * Also note the issue with code 0x4b (clock data to TMS) noted in
- * http://developer.intra2net.com/mailarchive/html/libftdi/2009/msg00292.html
- * which can affect longer JTAG state paths.
- */
-
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- /* project specific includes */
- #include <jtag/interface.h>
- #include <transport/transport.h>
- #include <helper/time_support.h>
-
- #if IS_CYGWIN == 1
- #include <windows.h>
- #endif
-
- #include <assert.h>
-
- /* FTDI access library includes */
- #include "mpsse.h"
-
- #define JTAG_MODE (LSB_FIRST | POS_EDGE_IN | NEG_EDGE_OUT)
-
- static char *ftdi_device_desc;
- static char *ftdi_serial;
- static uint8_t ftdi_channel;
-
- #define MAX_USB_IDS 8
- /* vid = pid = 0 marks the end of the list */
- static uint16_t ftdi_vid[MAX_USB_IDS + 1] = { 0 };
- static uint16_t ftdi_pid[MAX_USB_IDS + 1] = { 0 };
-
- static struct mpsse_ctx *mpsse_ctx;
-
- struct signal {
- const char *name;
- uint16_t data_mask;
- uint16_t oe_mask;
- bool invert_data;
- bool invert_oe;
- struct signal *next;
- };
-
- static struct signal *signals;
-
- static uint16_t output;
- static uint16_t direction;
-
- static struct signal *find_signal_by_name(const char *name)
- {
- for (struct signal *sig = signals; sig; sig = sig->next) {
- if (strcmp(name, sig->name) == 0)
- return sig;
- }
- return NULL;
- }
-
- static struct signal *create_signal(const char *name)
- {
- struct signal **psig = &signals;
- while (*psig)
- psig = &(*psig)->next;
-
- *psig = calloc(1, sizeof(**psig));
- if (*psig)
- (*psig)->name = strdup(name);
- if ((*psig)->name == NULL) {
- free(*psig);
- *psig = NULL;
- }
- return *psig;
- }
-
- static int ftdi_set_signal(const struct signal *s, char value)
- {
- int retval;
- bool data;
- bool oe;
-
- if (s->data_mask == 0 && s->oe_mask == 0) {
- LOG_ERROR("interface doesn't provide signal '%s'", s->name);
- return ERROR_FAIL;
- }
- switch (value) {
- case '0':
- data = s->invert_data;
- oe = !s->invert_oe;
- break;
- case '1':
- if (s->data_mask == 0) {
- LOG_ERROR("interface can't drive '%s' high", s->name);
- return ERROR_FAIL;
- }
- data = !s->invert_data;
- oe = !s->invert_oe;
- break;
- case 'z':
- case 'Z':
- if (s->oe_mask == 0) {
- LOG_ERROR("interface can't tri-state '%s'", s->name);
- return ERROR_FAIL;
- }
- data = s->invert_data;
- oe = s->invert_oe;
- break;
- default:
- assert(0 && "invalid signal level specifier");
- return ERROR_FAIL;
- }
-
- 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;
-
- retval = mpsse_set_data_bits_low_byte(mpsse_ctx, output & 0xff, direction & 0xff);
- if (retval == ERROR_OK)
- retval = mpsse_set_data_bits_high_byte(mpsse_ctx, output >> 8, direction >> 8);
- if (retval != ERROR_OK) {
- LOG_ERROR("couldn't initialize FTDI GPIO");
- return ERROR_JTAG_INIT_FAILED;
- }
-
- return ERROR_OK;
- }
-
-
- /**
- * Function move_to_state
- * moves the TAP controller from the current state to a
- * \a goal_state through a path given by tap_get_tms_path(). State transition
- * logging is performed by delegation to clock_tms().
- *
- * @param goal_state is the destination state for the move.
- */
- static int move_to_state(tap_state_t goal_state)
- {
- tap_state_t start_state = tap_get_state();
-
- /* goal_state is 1/2 of a tuple/pair of states which allow convenient
- lookup of the required TMS pattern to move to this state from the
- start state.
- */
-
- /* do the 2 lookups */
- int tms_bits = tap_get_tms_path(start_state, goal_state);
- int tms_count = tap_get_tms_path_len(start_state, goal_state);
-
- DEBUG_JTAG_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++)
- tap_set_state(tap_state_transition(tap_get_state(), (tms_bits >> i) & 1));
-
- return mpsse_clock_tms_cs_out(mpsse_ctx,
- (uint8_t *)&tms_bits,
- 0,
- tms_count,
- false,
- JTAG_MODE);
- }
-
- static int ftdi_speed(int speed)
- {
- int retval;
- retval = mpsse_set_frequency(mpsse_ctx, speed);
-
- if (retval < 0) {
- LOG_ERROR("couldn't set FTDI TCK speed");
- return retval;
- }
-
- return ERROR_OK;
- }
-
- static int ftdi_speed_div(int speed, int *khz)
- {
- *khz = speed / 1000;
- return ERROR_OK;
- }
-
- static int ftdi_khz(int khz, int *jtag_speed)
- {
- *jtag_speed = khz * 1000;
- return ERROR_OK;
- }
-
- static void ftdi_end_state(tap_state_t state)
- {
- if (tap_is_state_stable(state))
- tap_set_end_state(state);
- else {
- LOG_ERROR("BUG: %s is not a stable end state", tap_state_name(state));
- exit(-1);
- }
- }
-
- static int ftdi_execute_runtest(struct jtag_command *cmd)
- {
- int retval = ERROR_OK;
- int i;
- uint8_t zero = 0;
-
- DEBUG_JTAG_IO("runtest %i cycles, end in %s",
- cmd->cmd.runtest->num_cycles,
- tap_state_name(cmd->cmd.runtest->end_state));
-
- if (tap_get_state() != TAP_IDLE)
- move_to_state(TAP_IDLE);
-
- /* TODO: Reuse ftdi_execute_stableclocks */
- i = cmd->cmd.runtest->num_cycles;
- while (i > 0 && retval == ERROR_OK) {
- /* there are no state transitions in this code, so omit state tracking */
- unsigned this_len = i > 7 ? 7 : i;
- retval = mpsse_clock_tms_cs_out(mpsse_ctx, &zero, 0, this_len, false, JTAG_MODE);
- i -= this_len;
- }
-
- ftdi_end_state(cmd->cmd.runtest->end_state);
-
- if (tap_get_state() != tap_get_end_state())
- move_to_state(tap_get_end_state());
-
- DEBUG_JTAG_IO("runtest: %i, end in %s",
- cmd->cmd.runtest->num_cycles,
- tap_state_name(tap_get_end_state()));
- return retval;
- }
-
- static int ftdi_execute_statemove(struct jtag_command *cmd)
- {
- int retval = ERROR_OK;
-
- DEBUG_JTAG_IO("statemove end in %s",
- tap_state_name(cmd->cmd.statemove->end_state));
-
- ftdi_end_state(cmd->cmd.statemove->end_state);
-
- /* shortest-path move to desired end state */
- if (tap_get_state() != tap_get_end_state() || tap_get_end_state() == TAP_RESET)
- move_to_state(tap_get_end_state());
-
- return retval;
- }
-
- /**
- * Clock a bunch of TMS (or SWDIO) transitions, to change the JTAG
- * (or SWD) state machine. REVISIT: Not the best method, perhaps.
- */
- static int ftdi_execute_tms(struct jtag_command *cmd)
- {
- DEBUG_JTAG_IO("TMS: %d bits", cmd->cmd.tms->num_bits);
-
- /* TODO: Missing tap state tracking, also missing from ft2232.c! */
- return mpsse_clock_tms_cs_out(mpsse_ctx,
- cmd->cmd.tms->bits,
- 0,
- cmd->cmd.tms->num_bits,
- false,
- JTAG_MODE);
- }
-
- static int ftdi_execute_pathmove(struct jtag_command *cmd)
- {
- int retval = ERROR_OK;
-
- 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,
- tap_state_name(tap_get_state()),
- tap_state_name(path[num_states-1]));
-
- int state_count = 0;
- unsigned bit_count = 0;
- uint8_t tms_byte = 0;
-
- DEBUG_JTAG_IO("-");
-
- /* this loop verifies that the path is legal and logs each state in the path */
- while (num_states-- && retval == ERROR_OK) {
-
- /* either TMS=0 or TMS=1 must work ... */
- if (tap_state_transition(tap_get_state(), false)
- == path[state_count])
- buf_set_u32(&tms_byte, bit_count++, 1, 0x0);
- else if (tap_state_transition(tap_get_state(), true)
- == path[state_count]) {
- buf_set_u32(&tms_byte, bit_count++, 1, 0x1);
-
- /* ... or else the caller goofed BADLY */
- } else {
- LOG_ERROR("BUG: %s -> %s isn't a valid "
- "TAP state transition",
- tap_state_name(tap_get_state()),
- tap_state_name(path[state_count]));
- exit(-1);
- }
-
- tap_set_state(path[state_count]);
- state_count++;
-
- if (bit_count == 7 || num_states == 0) {
- retval = mpsse_clock_tms_cs_out(mpsse_ctx,
- &tms_byte,
- 0,
- bit_count,
- false,
- JTAG_MODE);
- bit_count = 0;
- }
- }
- tap_set_end_state(tap_get_state());
-
- return retval;
- }
-
- static int ftdi_execute_scan(struct jtag_command *cmd)
- {
- int retval = ERROR_OK;
-
- DEBUG_JTAG_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");
- }
-
- if (cmd->cmd.scan->num_fields == 0) {
- LOG_DEBUG("empty scan, doing nothing");
- return retval;
- }
-
- if (cmd->cmd.scan->ir_scan) {
- if (tap_get_state() != TAP_IRSHIFT)
- move_to_state(TAP_IRSHIFT);
- } else {
- if (tap_get_state() != TAP_DRSHIFT)
- move_to_state(TAP_DRSHIFT);
- }
-
- ftdi_end_state(cmd->cmd.scan->end_state);
-
- struct scan_field *field = cmd->cmd.scan->fields;
- unsigned scan_size = 0;
-
- 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",
- field->in_value ? "in" : "",
- field->out_value ? "out" : "",
- i,
- cmd->cmd.scan->num_fields,
- field->num_bits);
-
- if (i == cmd->cmd.scan->num_fields - 1 && tap_get_state() != tap_get_end_state()) {
- /* Last field, and we're leaving IRSHIFT/DRSHIFT. Clock last bit during tap
- * movement. This last field can't have length zero, it was checked above. */
- mpsse_clock_data(mpsse_ctx,
- field->out_value,
- 0,
- field->in_value,
- 0,
- field->num_bits - 1,
- 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;
- retval = mpsse_clock_tms_cs(mpsse_ctx,
- &tms_bits,
- 0,
- field->in_value,
- field->num_bits - 1,
- 1,
- last_bit,
- JTAG_MODE);
- tap_set_state(tap_state_transition(tap_get_state(), 1));
- retval = 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));
- } else
- mpsse_clock_data(mpsse_ctx,
- field->out_value,
- 0,
- field->in_value,
- 0,
- field->num_bits,
- JTAG_MODE);
- if (retval != ERROR_OK) {
- LOG_ERROR("failed to add field %d in scan", i);
- return retval;
- }
- }
-
- 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",
- (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size,
- tap_state_name(tap_get_end_state()));
- return retval;
-
- }
-
- static int ftdi_execute_reset(struct jtag_command *cmd)
- {
- 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 (trst && cmd->cmd.reset->trst == 1) {
- ftdi_set_signal(trst, '0');
- } 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 *srst = find_signal_by_name("nSRST");
- if (srst && cmd->cmd.reset->srst == 1) {
- ftdi_set_signal(srst, '0');
- } else if (srst && cmd->cmd.reset->srst == 0) {
- if (jtag_get_reset_config() & RESET_SRST_PUSH_PULL)
- ftdi_set_signal(srst, '1');
- else
- ftdi_set_signal(srst, 'z');
- }
-
- DEBUG_JTAG_IO("trst: %i, srst: %i",
- cmd->cmd.reset->trst, cmd->cmd.reset->srst);
- return ERROR_OK;
- }
-
- static int ftdi_execute_sleep(struct jtag_command *cmd)
- {
- int retval = ERROR_OK;
-
- DEBUG_JTAG_IO("sleep %" PRIi32, cmd->cmd.sleep->us);
-
- retval = mpsse_flush(mpsse_ctx);
- jtag_sleep(cmd->cmd.sleep->us);
- DEBUG_JTAG_IO("sleep %" PRIi32 " usec while in %s",
- cmd->cmd.sleep->us,
- tap_state_name(tap_get_state()));
- return retval;
- }
-
- static int ftdi_execute_stableclocks(struct jtag_command *cmd)
- {
- int retval = ERROR_OK;
-
- /* this is only allowed while in a stable state. A check for a stable
- * state was done in jtag_add_clocks()
- */
- int num_cycles = cmd->cmd.stableclocks->num_cycles;
-
- /* 7 bits of either ones or zeros. */
- uint8_t tms = tap_get_state() == TAP_RESET ? 0x7f : 0x00;
-
- /* TODO: Use mpsse_clock_data with in=out=0 for this, if TMS can be set to
- * the correct level and remain there during the scan */
- while (num_cycles > 0 && retval == ERROR_OK) {
- /* there are no state transitions in this code, so omit state tracking */
- unsigned this_len = num_cycles > 7 ? 7 : num_cycles;
- retval = mpsse_clock_tms_cs_out(mpsse_ctx, &tms, 0, this_len, false, JTAG_MODE);
- num_cycles -= this_len;
- }
-
- DEBUG_JTAG_IO("clocks %i while in %s",
- cmd->cmd.stableclocks->num_cycles,
- tap_state_name(tap_get_state()));
- return retval;
- }
-
- static int ftdi_execute_command(struct jtag_command *cmd)
- {
- int retval;
-
- switch (cmd->type) {
- case JTAG_RESET:
- retval = ftdi_execute_reset(cmd);
- break;
- case JTAG_RUNTEST:
- retval = ftdi_execute_runtest(cmd);
- break;
- case JTAG_TLR_RESET:
- retval = ftdi_execute_statemove(cmd);
- break;
- case JTAG_PATHMOVE:
- retval = ftdi_execute_pathmove(cmd);
- break;
- case JTAG_SCAN:
- retval = ftdi_execute_scan(cmd);
- break;
- case JTAG_SLEEP:
- retval = ftdi_execute_sleep(cmd);
- break;
- case JTAG_STABLECLOCKS:
- retval = ftdi_execute_stableclocks(cmd);
- break;
- case JTAG_TMS:
- retval = ftdi_execute_tms(cmd);
- break;
- default:
- LOG_ERROR("BUG: unknown JTAG command type encountered: %d", cmd->type);
- retval = ERROR_JTAG_QUEUE_FAILED;
- break;
- }
- return retval;
- }
-
- static int ftdi_execute_queue(void)
- {
- int retval = ERROR_OK;
-
- /* blink, if the current layout has that feature */
- struct signal *led = find_signal_by_name("LED");
- if (led)
- ftdi_set_signal(led, '1');
-
- for (struct jtag_command *cmd = jtag_command_queue; cmd; cmd = cmd->next) {
- /* fill the write buffer with the desired command */
- if (ftdi_execute_command(cmd) != ERROR_OK)
- retval = ERROR_JTAG_QUEUE_FAILED;
- }
-
- if (led)
- ftdi_set_signal(led, '0');
-
- retval = mpsse_flush(mpsse_ctx);
- if (retval != ERROR_OK)
- LOG_ERROR("error while flushing MPSSE queue: %d", retval);
-
- return retval;
- }
-
- static int ftdi_initialize(void)
- {
- int retval;
-
- if (tap_get_tms_path_len(TAP_IRPAUSE, TAP_IRPAUSE) == 7)
- LOG_DEBUG("ftdi interface using 7 step jtag state transitions");
- else
- LOG_DEBUG("ftdi interface using shortest path jtag state transitions");
-
- 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);
- if (mpsse_ctx)
- break;
- }
-
- if (!mpsse_ctx)
- return ERROR_JTAG_INIT_FAILED;
-
- retval = mpsse_set_data_bits_low_byte(mpsse_ctx, output & 0xff, direction & 0xff);
- if (retval == ERROR_OK)
- retval = mpsse_set_data_bits_high_byte(mpsse_ctx, output >> 8, direction >> 8);
- if (retval != ERROR_OK) {
- LOG_ERROR("couldn't initialize FTDI with configured layout");
- return ERROR_JTAG_INIT_FAILED;
- }
-
- retval = mpsse_loopback_config(mpsse_ctx, false);
- if (retval != ERROR_OK) {
- LOG_ERROR("couldn't write to FTDI to disable loopback");
- return ERROR_JTAG_INIT_FAILED;
- }
-
- return mpsse_flush(mpsse_ctx);
- }
-
- static int ftdi_quit(void)
- {
- mpsse_close(mpsse_ctx);
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(ftdi_handle_device_desc_command)
- {
- if (CMD_ARGC == 1) {
- if (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>");
- }
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(ftdi_handle_serial_command)
- {
- if (CMD_ARGC == 1) {
- if (ftdi_serial)
- free(ftdi_serial);
- ftdi_serial = strdup(CMD_ARGV[0]);
- } else {
- return ERROR_COMMAND_SYNTAX_ERROR;
- }
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(ftdi_handle_channel_command)
- {
- if (CMD_ARGC == 1)
- COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0], ftdi_channel);
- else
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(ftdi_handle_layout_init_command)
- {
- 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);
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(ftdi_handle_layout_signal_command)
- {
- if (CMD_ARGC < 1)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- bool invert_data = false;
- uint16_t data_mask = 0;
- bool invert_oe = false;
- uint16_t oe_mask = 0;
- for (unsigned i = 1; i < CMD_ARGC; i += 2) {
- if (strcmp("-data", CMD_ARGV[i]) == 0) {
- invert_data = false;
- COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], data_mask);
- } else if (strcmp("-ndata", CMD_ARGV[i]) == 0) {
- invert_data = true;
- COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], data_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 {
- LOG_ERROR("unknown option '%s'", CMD_ARGV[i]);
- return ERROR_COMMAND_SYNTAX_ERROR;
- }
- }
-
- struct signal *sig;
- sig = find_signal_by_name(CMD_ARGV[0]);
- if (!sig)
- sig = create_signal(CMD_ARGV[0]);
- if (!sig) {
- LOG_ERROR("failed to create signal %s", CMD_ARGV[0]);
- return ERROR_FAIL;
- }
-
- sig->invert_data = invert_data;
- sig->data_mask = data_mask;
- sig->invert_oe = invert_oe;
- sig->oe_mask = oe_mask;
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(ftdi_handle_set_signal_command)
- {
- if (CMD_ARGC < 2)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- struct signal *sig;
- 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;
- }
-
- switch (*CMD_ARGV[1]) {
- case '0':
- case '1':
- case 'z':
- case 'Z':
- /* single character level specifier only */
- if (CMD_ARGV[1][1] == '\0') {
- ftdi_set_signal(sig, *CMD_ARGV[1]);
- break;
- }
- 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_vid_pid_command)
- {
- if (CMD_ARGC > MAX_USB_IDS * 2) {
- 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");
- if (CMD_ARGC < 2)
- return ERROR_COMMAND_SYNTAX_ERROR;
- /* remove the incomplete trailing id */
- CMD_ARGC -= 1;
- }
-
- unsigned i;
- for (i = 0; i < CMD_ARGC; i += 2) {
- COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i], ftdi_vid[i >> 1]);
- COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], ftdi_pid[i >> 1]);
- }
-
- /*
- * Explicitly terminate, in case there are multiples instances of
- * ftdi_vid_pid.
- */
- ftdi_vid[i >> 1] = ftdi_pid[i >> 1] = 0;
-
- return ERROR_OK;
- }
-
- static const struct command_registration ftdi_command_handlers[] = {
- {
- .name = "ftdi_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",
- .handler = &ftdi_handle_serial_command,
- .mode = COMMAND_CONFIG,
- .help = "set the serial number of the FTDI device",
- .usage = "serial_string",
- },
- {
- .name = "ftdi_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",
- .handler = &ftdi_handle_layout_init_command,
- .mode = COMMAND_CONFIG,
- .help = "initialize the FTDI GPIO signals used "
- "to control output-enables and reset signals",
- .usage = "data direction",
- },
- {
- .name = "ftdi_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]",
- },
- {
- .name = "ftdi_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",
- .handler = &ftdi_handle_vid_pid_command,
- .mode = COMMAND_CONFIG,
- .help = "the vendor ID and product ID of the FTDI device",
- .usage = "(vid pid)* ",
- },
- COMMAND_REGISTRATION_DONE
- };
-
- struct jtag_interface ftdi_interface = {
- .name = "ftdi",
- .supported = DEBUG_CAP_TMS_SEQ,
- .commands = ftdi_command_handlers,
- .transports = jtag_only,
-
- .init = ftdi_initialize,
- .quit = ftdi_quit,
- .speed = ftdi_speed,
- .speed_div = ftdi_speed_div,
- .khz = ftdi_khz,
- .execute_queue = ftdi_execute_queue,
- };
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