|
- /***************************************************************************
- * Copyright (C) 2005 by Dominic Rath *
- * Dominic.Rath@gmx.de *
- * *
- * Copyright (C) 2007-2010 Øyvind Harboe *
- * oyvind.harboe@zylin.com *
- * *
- * Copyright (C) 2009 SoftPLC Corporation *
- * http://softplc.com *
- * dick@softplc.com *
- * *
- * Copyright (C) 2009 Zachary T Welch *
- * zw@superlucidity.net *
- * *
- * 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, see <http://www.gnu.org/licenses/>. *
- ***************************************************************************/
-
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include "jtag.h"
- #include "minidriver.h"
- #include "interface.h"
- #include "interfaces.h"
- #include <transport/transport.h>
- #include <jtag/drivers/jtag_usb_common.h>
-
- #ifdef HAVE_STRINGS_H
- #include <strings.h>
- #endif
-
- /**
- * @file
- * Holds support for configuring debug adapters from TCl scripts.
- */
-
- struct adapter_driver *adapter_driver;
- const char * const jtag_only[] = { "jtag", NULL };
-
- static int jim_adapter_name(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
- {
- Jim_GetOptInfo goi;
- Jim_GetOpt_Setup(&goi, interp, argc-1, argv + 1);
-
- /* return the name of the interface */
- /* TCL code might need to know the exact type... */
- /* FUTURE: we allow this as a means to "set" the interface. */
- if (goi.argc != 0) {
- Jim_WrongNumArgs(goi.interp, 1, goi.argv-1, "(no params)");
- return JIM_ERR;
- }
- const char *name = adapter_driver ? adapter_driver->name : NULL;
- Jim_SetResultString(goi.interp, name ? : "undefined", -1);
- return JIM_OK;
- }
-
- COMMAND_HANDLER(adapter_transports_command)
- {
- char **transports;
- int retval;
-
- retval = CALL_COMMAND_HANDLER(transport_list_parse, &transports);
- if (retval != ERROR_OK)
- return retval;
-
- retval = allow_transports(CMD_CTX, (const char **)transports);
-
- if (retval != ERROR_OK) {
- for (unsigned i = 0; transports[i]; i++)
- free(transports[i]);
- free(transports);
- }
- return retval;
- }
-
- COMMAND_HANDLER(handle_adapter_list_command)
- {
- if (strcmp(CMD_NAME, "list") == 0 && CMD_ARGC > 0)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- command_print(CMD, "The following debug adapters are available:");
- for (unsigned i = 0; NULL != adapter_drivers[i]; i++) {
- const char *name = adapter_drivers[i]->name;
- command_print(CMD, "%u: %s", i + 1, name);
- }
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(handle_adapter_driver_command)
- {
- int retval;
-
- /* check whether the interface is already configured */
- if (adapter_driver) {
- LOG_WARNING("Interface already configured, ignoring");
- return ERROR_OK;
- }
-
- /* interface name is a mandatory argument */
- if (CMD_ARGC != 1 || CMD_ARGV[0][0] == '\0')
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- for (unsigned i = 0; NULL != adapter_drivers[i]; i++) {
- if (strcmp(CMD_ARGV[0], adapter_drivers[i]->name) != 0)
- continue;
-
- if (NULL != adapter_drivers[i]->commands) {
- retval = register_commands(CMD_CTX, NULL,
- adapter_drivers[i]->commands);
- if (ERROR_OK != retval)
- return retval;
- }
-
- adapter_driver = adapter_drivers[i];
-
- return allow_transports(CMD_CTX, adapter_driver->transports);
- }
-
- /* no valid interface was found (i.e. the configuration option,
- * didn't match one of the compiled-in interfaces
- */
- LOG_ERROR("The specified debug interface was not found (%s)",
- CMD_ARGV[0]);
- CALL_COMMAND_HANDLER(handle_adapter_list_command);
- return ERROR_JTAG_INVALID_INTERFACE;
- }
-
- COMMAND_HANDLER(handle_reset_config_command)
- {
- int new_cfg = 0;
- int mask = 0;
-
- /* Original versions cared about the order of these tokens:
- * reset_config signals [combination [trst_type [srst_type]]]
- * They also clobbered the previous configuration even on error.
- *
- * Here we don't care about the order, and only change values
- * which have been explicitly specified.
- */
- for (; CMD_ARGC; CMD_ARGC--, CMD_ARGV++) {
- int tmp = 0;
- int m;
-
- /* gating */
- m = RESET_SRST_NO_GATING;
- if (strcmp(*CMD_ARGV, "srst_gates_jtag") == 0)
- /* default: don't use JTAG while SRST asserted */;
- else if (strcmp(*CMD_ARGV, "srst_nogate") == 0)
- tmp = RESET_SRST_NO_GATING;
- else
- m = 0;
- if (mask & m) {
- LOG_ERROR("extra reset_config %s spec (%s)",
- "gating", *CMD_ARGV);
- return ERROR_COMMAND_SYNTAX_ERROR;
- }
- if (m)
- goto next;
-
- /* signals */
- m = RESET_HAS_TRST | RESET_HAS_SRST;
- if (strcmp(*CMD_ARGV, "none") == 0)
- tmp = RESET_NONE;
- else if (strcmp(*CMD_ARGV, "trst_only") == 0)
- tmp = RESET_HAS_TRST;
- else if (strcmp(*CMD_ARGV, "srst_only") == 0)
- tmp = RESET_HAS_SRST;
- else if (strcmp(*CMD_ARGV, "trst_and_srst") == 0)
- tmp = RESET_HAS_TRST | RESET_HAS_SRST;
- else
- m = 0;
- if (mask & m) {
- LOG_ERROR("extra reset_config %s spec (%s)",
- "signal", *CMD_ARGV);
- return ERROR_COMMAND_SYNTAX_ERROR;
- }
- if (m)
- goto next;
-
- /* combination (options for broken wiring) */
- m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
- if (strcmp(*CMD_ARGV, "separate") == 0)
- /* separate reset lines - default */;
- else if (strcmp(*CMD_ARGV, "srst_pulls_trst") == 0)
- tmp |= RESET_SRST_PULLS_TRST;
- else if (strcmp(*CMD_ARGV, "trst_pulls_srst") == 0)
- tmp |= RESET_TRST_PULLS_SRST;
- else if (strcmp(*CMD_ARGV, "combined") == 0)
- tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
- else
- m = 0;
- if (mask & m) {
- LOG_ERROR("extra reset_config %s spec (%s)",
- "combination", *CMD_ARGV);
- return ERROR_COMMAND_SYNTAX_ERROR;
- }
- if (m)
- goto next;
-
- /* trst_type (NOP without HAS_TRST) */
- m = RESET_TRST_OPEN_DRAIN;
- if (strcmp(*CMD_ARGV, "trst_open_drain") == 0)
- tmp |= RESET_TRST_OPEN_DRAIN;
- else if (strcmp(*CMD_ARGV, "trst_push_pull") == 0)
- /* push/pull from adapter - default */;
- else
- m = 0;
- if (mask & m) {
- LOG_ERROR("extra reset_config %s spec (%s)",
- "trst_type", *CMD_ARGV);
- return ERROR_COMMAND_SYNTAX_ERROR;
- }
- if (m)
- goto next;
-
- /* srst_type (NOP without HAS_SRST) */
- m = RESET_SRST_PUSH_PULL;
- if (strcmp(*CMD_ARGV, "srst_push_pull") == 0)
- tmp |= RESET_SRST_PUSH_PULL;
- else if (strcmp(*CMD_ARGV, "srst_open_drain") == 0)
- /* open drain from adapter - default */;
- else
- m = 0;
- if (mask & m) {
- LOG_ERROR("extra reset_config %s spec (%s)",
- "srst_type", *CMD_ARGV);
- return ERROR_COMMAND_SYNTAX_ERROR;
- }
- if (m)
- goto next;
-
- /* connect_type - only valid when srst_nogate */
- m = RESET_CNCT_UNDER_SRST;
- if (strcmp(*CMD_ARGV, "connect_assert_srst") == 0)
- tmp |= RESET_CNCT_UNDER_SRST;
- else if (strcmp(*CMD_ARGV, "connect_deassert_srst") == 0)
- /* connect normally - default */;
- else
- m = 0;
- if (mask & m) {
- LOG_ERROR("extra reset_config %s spec (%s)",
- "connect_type", *CMD_ARGV);
- return ERROR_COMMAND_SYNTAX_ERROR;
- }
- if (m)
- goto next;
-
- /* caller provided nonsense; fail */
- LOG_ERROR("unknown reset_config flag (%s)", *CMD_ARGV);
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- next:
- /* Remember the bits which were specified (mask)
- * and their new values (new_cfg).
- */
- mask |= m;
- new_cfg |= tmp;
- }
-
- /* clear previous values of those bits, save new values */
- if (mask) {
- int old_cfg = jtag_get_reset_config();
-
- old_cfg &= ~mask;
- new_cfg |= old_cfg;
- jtag_set_reset_config(new_cfg);
- } else
- new_cfg = jtag_get_reset_config();
-
- /*
- * Display the (now-)current reset mode
- */
- char *modes[6];
-
- /* minimal JTAG has neither SRST nor TRST (so that's the default) */
- switch (new_cfg & (RESET_HAS_TRST | RESET_HAS_SRST)) {
- case RESET_HAS_SRST:
- modes[0] = "srst_only";
- break;
- case RESET_HAS_TRST:
- modes[0] = "trst_only";
- break;
- case RESET_TRST_AND_SRST:
- modes[0] = "trst_and_srst";
- break;
- default:
- modes[0] = "none";
- break;
- }
-
- /* normally SRST and TRST are decoupled; but bugs happen ... */
- switch (new_cfg & (RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST)) {
- case RESET_SRST_PULLS_TRST:
- modes[1] = "srst_pulls_trst";
- break;
- case RESET_TRST_PULLS_SRST:
- modes[1] = "trst_pulls_srst";
- break;
- case RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST:
- modes[1] = "combined";
- break;
- default:
- modes[1] = "separate";
- break;
- }
-
- /* TRST-less connectors include Altera, Xilinx, and minimal JTAG */
- if (new_cfg & RESET_HAS_TRST) {
- if (new_cfg & RESET_TRST_OPEN_DRAIN)
- modes[3] = " trst_open_drain";
- else
- modes[3] = " trst_push_pull";
- } else
- modes[3] = "";
-
- /* SRST-less connectors include TI-14, Xilinx, and minimal JTAG */
- if (new_cfg & RESET_HAS_SRST) {
- if (new_cfg & RESET_SRST_NO_GATING)
- modes[2] = " srst_nogate";
- else
- modes[2] = " srst_gates_jtag";
-
- if (new_cfg & RESET_SRST_PUSH_PULL)
- modes[4] = " srst_push_pull";
- else
- modes[4] = " srst_open_drain";
-
- if (new_cfg & RESET_CNCT_UNDER_SRST)
- modes[5] = " connect_assert_srst";
- else
- modes[5] = " connect_deassert_srst";
- } else {
- modes[2] = "";
- modes[4] = "";
- modes[5] = "";
- }
-
- command_print(CMD, "%s %s%s%s%s%s",
- modes[0], modes[1],
- modes[2], modes[3], modes[4], modes[5]);
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(handle_adapter_srst_delay_command)
- {
- if (CMD_ARGC > 1)
- return ERROR_COMMAND_SYNTAX_ERROR;
- if (CMD_ARGC == 1) {
- unsigned delay;
- COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], delay);
-
- jtag_set_nsrst_delay(delay);
- }
- command_print(CMD, "adapter srst delay: %u", jtag_get_nsrst_delay());
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(handle_adapter_srst_pulse_width_command)
- {
- if (CMD_ARGC > 1)
- return ERROR_COMMAND_SYNTAX_ERROR;
- if (CMD_ARGC == 1) {
- unsigned width;
- COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], width);
-
- jtag_set_nsrst_assert_width(width);
- }
- command_print(CMD, "adapter srst pulse_width: %u", jtag_get_nsrst_assert_width());
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(handle_adapter_speed_command)
- {
- if (CMD_ARGC > 1)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- int retval = ERROR_OK;
- if (CMD_ARGC == 1) {
- unsigned khz = 0;
- COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], khz);
-
- retval = jtag_config_khz(khz);
- if (ERROR_OK != retval)
- return retval;
- }
-
- int cur_speed = jtag_get_speed_khz();
- retval = jtag_get_speed_readable(&cur_speed);
- if (ERROR_OK != retval)
- return retval;
-
- if (cur_speed)
- command_print(CMD, "adapter speed: %d kHz", cur_speed);
- else
- command_print(CMD, "adapter speed: RCLK - adaptive");
-
- return retval;
- }
-
- COMMAND_HANDLER(handle_adapter_reset_de_assert)
- {
- enum values {
- VALUE_UNDEFINED = -1,
- VALUE_DEASSERT = 0,
- VALUE_ASSERT = 1,
- };
- enum values value;
- enum values srst = VALUE_UNDEFINED;
- enum values trst = VALUE_UNDEFINED;
- enum reset_types jtag_reset_config = jtag_get_reset_config();
- char *signal;
-
- if (CMD_ARGC == 0) {
- if (transport_is_jtag()) {
- if (jtag_reset_config & RESET_HAS_TRST)
- signal = jtag_get_trst() ? "asserted" : "deasserted";
- else
- signal = "not present";
- command_print(CMD, "trst %s", signal);
- }
-
- if (jtag_reset_config & RESET_HAS_SRST)
- signal = jtag_get_srst() ? "asserted" : "deasserted";
- else
- signal = "not present";
- command_print(CMD, "srst %s", signal);
-
- return ERROR_OK;
- }
-
- if (CMD_ARGC != 1 && CMD_ARGC != 3)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- value = (strcmp(CMD_NAME, "assert") == 0) ? VALUE_ASSERT : VALUE_DEASSERT;
- if (strcmp(CMD_ARGV[0], "srst") == 0)
- srst = value;
- else if (strcmp(CMD_ARGV[0], "trst") == 0)
- trst = value;
- else
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- if (CMD_ARGC == 3) {
- if (strcmp(CMD_ARGV[1], "assert") == 0)
- value = VALUE_ASSERT;
- else if (strcmp(CMD_ARGV[1], "deassert") == 0)
- value = VALUE_DEASSERT;
- else
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- if (strcmp(CMD_ARGV[2], "srst") == 0 && srst == VALUE_UNDEFINED)
- srst = value;
- else if (strcmp(CMD_ARGV[2], "trst") == 0 && trst == VALUE_UNDEFINED)
- trst = value;
- else
- return ERROR_COMMAND_SYNTAX_ERROR;
- }
-
- if (trst == VALUE_UNDEFINED) {
- if (transport_is_jtag())
- trst = jtag_get_trst() ? VALUE_ASSERT : VALUE_DEASSERT;
- else
- trst = VALUE_DEASSERT; /* unused, safe value */
- }
-
- if (srst == VALUE_UNDEFINED) {
- if (jtag_reset_config & RESET_HAS_SRST)
- srst = jtag_get_srst() ? VALUE_ASSERT : VALUE_DEASSERT;
- else
- srst = VALUE_DEASSERT; /* unused, safe value */
- }
-
- if (trst == VALUE_ASSERT && !transport_is_jtag()) {
- LOG_ERROR("transport has no trst signal");
- return ERROR_FAIL;
- }
-
- if (srst == VALUE_ASSERT && !(jtag_reset_config & RESET_HAS_SRST)) {
- LOG_ERROR("adapter has no srst signal");
- return ERROR_FAIL;
- }
-
- return adapter_resets((trst == VALUE_DEASSERT) ? TRST_DEASSERT : TRST_ASSERT,
- (srst == VALUE_DEASSERT) ? SRST_DEASSERT : SRST_ASSERT);
- }
-
- #ifdef HAVE_LIBUSB_GET_PORT_NUMBERS
- COMMAND_HANDLER(handle_usb_location_command)
- {
- if (CMD_ARGC == 1)
- jtag_usb_set_location(CMD_ARGV[0]);
-
- command_print(CMD, "adapter usb location: %s", jtag_usb_get_location());
-
- return ERROR_OK;
- }
- #endif /* HAVE_LIBUSB_GET_PORT_NUMBERS */
-
- static const struct command_registration adapter_usb_command_handlers[] = {
- #ifdef HAVE_LIBUSB_GET_PORT_NUMBERS
- {
- .name = "location",
- .handler = &handle_usb_location_command,
- .mode = COMMAND_CONFIG,
- .help = "display or set the USB bus location of the USB device",
- .usage = "[<bus>-port[.port]...]",
- },
- #endif /* HAVE_LIBUSB_GET_PORT_NUMBERS */
- COMMAND_REGISTRATION_DONE
- };
-
- static const struct command_registration adapter_srst_command_handlers[] = {
- {
- .name = "delay",
- .handler = handle_adapter_srst_delay_command,
- .mode = COMMAND_ANY,
- .help = "delay after deasserting SRST in ms",
- .usage = "[milliseconds]",
- },
- {
- .name = "pulse_width",
- .handler = handle_adapter_srst_pulse_width_command,
- .mode = COMMAND_ANY,
- .help = "SRST assertion pulse width in ms",
- .usage = "[milliseconds]",
- },
- COMMAND_REGISTRATION_DONE
- };
-
- static const struct command_registration adapter_command_handlers[] = {
- {
- .name = "driver",
- .handler = handle_adapter_driver_command,
- .mode = COMMAND_CONFIG,
- .help = "Select a debug adapter driver",
- .usage = "driver_name",
- },
- {
- .name = "speed",
- .handler = handle_adapter_speed_command,
- .mode = COMMAND_ANY,
- .help = "With an argument, change to the specified maximum "
- "jtag speed. For JTAG, 0 KHz signifies adaptive "
- "clocking. "
- "With or without argument, display current setting.",
- .usage = "[khz]",
- },
- {
- .name = "list",
- .handler = handle_adapter_list_command,
- .mode = COMMAND_ANY,
- .help = "List all built-in debug adapter drivers",
- .usage = "",
- },
- {
- .name = "name",
- .mode = COMMAND_ANY,
- .jim_handler = jim_adapter_name,
- .help = "Returns the name of the currently "
- "selected adapter (driver)",
- },
- {
- .name = "srst",
- .mode = COMMAND_ANY,
- .help = "srst adapter command group",
- .usage = "",
- .chain = adapter_srst_command_handlers,
- },
- {
- .name = "transports",
- .handler = adapter_transports_command,
- .mode = COMMAND_CONFIG,
- .help = "Declare transports the adapter supports.",
- .usage = "transport ... ",
- },
- {
- .name = "usb",
- .mode = COMMAND_ANY,
- .help = "usb adapter command group",
- .usage = "",
- .chain = adapter_usb_command_handlers,
- },
- {
- .name = "assert",
- .handler = handle_adapter_reset_de_assert,
- .mode = COMMAND_EXEC,
- .help = "Controls SRST and TRST lines.",
- .usage = "|deassert [srst|trst [assert|deassert srst|trst]]",
- },
- {
- .name = "deassert",
- .handler = handle_adapter_reset_de_assert,
- .mode = COMMAND_EXEC,
- .help = "Controls SRST and TRST lines.",
- .usage = "|assert [srst|trst [deassert|assert srst|trst]]",
- },
- COMMAND_REGISTRATION_DONE
- };
-
- static const struct command_registration interface_command_handlers[] = {
- {
- .name = "adapter",
- .mode = COMMAND_ANY,
- .help = "adapter command group",
- .usage = "",
- .chain = adapter_command_handlers,
- },
- {
- .name = "reset_config",
- .handler = handle_reset_config_command,
- .mode = COMMAND_ANY,
- .help = "configure adapter reset behavior",
- .usage = "[none|trst_only|srst_only|trst_and_srst] "
- "[srst_pulls_trst|trst_pulls_srst|combined|separate] "
- "[srst_gates_jtag|srst_nogate] "
- "[trst_push_pull|trst_open_drain] "
- "[srst_push_pull|srst_open_drain] "
- "[connect_deassert_srst|connect_assert_srst]",
- },
- COMMAND_REGISTRATION_DONE
- };
-
- /**
- * Register the commands which deal with arbitrary debug adapter drivers.
- *
- * @todo Remove internal assumptions that all debug adapters use JTAG for
- * transport. Various types and data structures are not named generically.
- */
- int interface_register_commands(struct command_context *ctx)
- {
- return register_commands(ctx, NULL, interface_command_handlers);
- }
|