src/jtag/hla/hla_transport.c

   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Mathias Kuester                                 *
   3  *   Mathias Kuester <kesmtp@freenet.de>                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2012 by Spencer Oliver                                  *
   6  *   spen@spen-soft.co.uk                                                  *
   7  *                                                                         *
   8  *   This program is free software; you can redistribute it and/or modify  *
   9  *   it under the terms of the GNU General Public License as published by  *
  10  *   the Free Software Foundation; either version 2 of the License, or     *
  11  *   (at your option) any later version.                                   *
  12  *                                                                         *
  13  *   This program is distributed in the hope that it will be useful,       *
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  16  *   GNU General Public License for more details.                          *
  17  *                                                                         *
  18  *   You should have received a copy of the GNU General Public License     *
  19  *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  20  ***************************************************************************/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include "config.h"
  24 #endif
  25
  26 /* project specific includes */
  27 #include <jtag/interface.h>
  28 #include <jtag/tcl.h>
  29 #include <transport/transport.h>
  30 #include <helper/time_support.h>
  31 #include <target/target.h>
  32 #include <jtag/hla/hla_tcl.h>
  33 #include <jtag/hla/hla_transport.h>
  34 #include <jtag/hla/hla_interface.h>
  35
  36 COMMAND_HANDLER(hl_transport_jtag_command)
  37 {
  38         LOG_DEBUG("hl_transport_jtag_command");
  39
  40         return ERROR_OK;
  41 }
  42
  43 COMMAND_HANDLER(hl_transport_reset_command)
  44 {
  45         return hl_interface_init_reset();
  46 }
  47
  48 static const struct command_registration hl_swd_transport_subcommand_handlers[] = {
  49         {
  50          .name = "newdap",
  51          .mode = COMMAND_CONFIG,
  52          .jim_handler = jim_hl_newtap,
  53          .help = "declare a new SWD DAP",
  54          },
  55         COMMAND_REGISTRATION_DONE
  56 };
  57
  58 static const struct command_registration hl_swd_transport_command_handlers[] = {
  59         {
  60          .name = "swd",
  61          .mode = COMMAND_ANY,
  62          .help = "SWD command group",
  63          .usage = "",
  64          .chain = hl_swd_transport_subcommand_handlers,
  65          },
  66         COMMAND_REGISTRATION_DONE
  67 };
  68
  69 static const struct command_registration hl_transport_jtag_subcommand_handlers[] = {
  70         {
  71          .name = "newtap",
  72          .mode = COMMAND_CONFIG,
  73          .jim_handler = jim_hl_newtap,
  74          .help = "Create a new TAP instance named basename.tap_type, "
  75          "and appends it to the scan chain.",
  76          .usage = "basename tap_type '-irlen' count "
  77          "['-expected_id' number]",
  78          },
  79         {
  80          .name = "init",
  81          .mode = COMMAND_ANY,
  82          .handler = hl_transport_jtag_command,
  83          .usage = ""
  84          },
  85         {
  86          .name = "arp_init",
  87          .mode = COMMAND_ANY,
  88          .handler = hl_transport_jtag_command,
  89          .usage = ""
  90          },
  91         {
  92          .name = "arp_init-reset",
  93          .mode = COMMAND_ANY,
  94          .handler = hl_transport_reset_command,
  95          .usage = ""
  96          },
  97         {
  98          .name = "tapisenabled",
  99          .mode = COMMAND_EXEC,
 100          .jim_handler = jim_jtag_tap_enabler,
 101          },
 102         {
 103          .name = "tapenable",
 104          .mode = COMMAND_EXEC,
 105          .jim_handler = jim_jtag_tap_enabler,
 106          },
 107         {
 108          .name = "tapdisable",
 109          .mode = COMMAND_EXEC,
 110          .handler = hl_transport_jtag_command,
 111          .usage = "",
 112          },
 113         {
 114          .name = "configure",
 115          .mode = COMMAND_EXEC,
 116          .handler = hl_transport_jtag_command,
 117          .usage = "",
 118          },
 119         {
 120          .name = "cget",
 121          .mode = COMMAND_EXEC,
 122          .jim_handler = jim_jtag_configure,
 123          },
 124         {
 125          .name = "names",
 126          .mode = COMMAND_ANY,
 127          .handler = hl_transport_jtag_command,
 128          .usage = "",
 129          },
 130
 131         COMMAND_REGISTRATION_DONE
 132 };
 133
 134 static const struct command_registration hl_jtag_transport_command_handlers[] = {
 135         {
 136          .name = "jtag",
 137          .mode = COMMAND_ANY,
 138          .help = "perform jtag tap actions",
 139          .usage = "",
 140          .chain = hl_transport_jtag_subcommand_handlers,
 141          },
 142         {
 143          .name = "jtag_ntrst_delay",
 144          .mode = COMMAND_ANY,
 145          .handler = hl_transport_jtag_command,
 146          .usage = "",
 147          },
 148         COMMAND_REGISTRATION_DONE
 149 };
 150
 151
 152 static int hl_transport_init(struct command_context *cmd_ctx)
 153 {
 154         LOG_DEBUG("hl_transport_init");
 155         struct target *t = get_current_target(cmd_ctx);
 156         struct transport *transport;
 157         enum hl_transports tr;
 158
 159         if (!t) {
 160                 LOG_ERROR("no current target");
 161                 return ERROR_FAIL;
 162         }
 163
 164         transport = get_current_transport();
 165
 166         if (!transport) {
 167                 LOG_ERROR("no transport selected");
 168                 return ERROR_FAIL;
 169         }
 170
 171         LOG_DEBUG("current transport %s", transport->name);
 172
 173         /* get selected transport as enum */
 174         tr = HL_TRANSPORT_UNKNOWN;
 175
 176         if (strcmp(transport->name, "hla_swd") == 0)
 177                 tr = HL_TRANSPORT_SWD;
 178         else if (strcmp(transport->name, "hla_jtag") == 0)
 179                 tr = HL_TRANSPORT_JTAG;
 180
 181         int retval = hl_interface_open(tr);
 182
 183         if (retval != ERROR_OK)
 184                 return retval;
 185
 186         return hl_interface_init_target(t);
 187 }
 188
 189 static int hl_jtag_transport_select(struct command_context *cmd_ctx)
 190 {
 191         LOG_DEBUG("hl_jtag_transport_select");
 192
 193         /* NOTE:  interface init must already have been done.
 194          * That works with only C code ... no Tcl glue required.
 195          */
 196
 197         return register_commands(cmd_ctx, NULL, hl_jtag_transport_command_handlers);
 198 }
 199
 200 static int hl_swd_transport_select(struct command_context *cmd_ctx)
 201 {
 202         LOG_DEBUG("hl_swd_transport_select");
 203         return register_commands(cmd_ctx, NULL, hl_swd_transport_command_handlers);
 204 }
 205
 206 static struct transport hl_swd_transport = {
 207         .name = "hla_swd",
 208         .select = hl_swd_transport_select,
 209         .init = hl_transport_init,
 210         .override_target = hl_interface_override_target,
 211 };
 212
 213 static struct transport hl_jtag_transport = {
 214         .name = "hla_jtag",
 215         .select = hl_jtag_transport_select,
 216         .init = hl_transport_init,
 217         .override_target = hl_interface_override_target,
 218 };
 219
 220 const char *hl_transports[] = { "hla_swd", "hla_jtag", NULL };
 221
 222 static void hl_constructor(void) __attribute__ ((constructor));
 223 static void hl_constructor(void)
 224 {
 225         transport_register(&hl_swd_transport);
 226         transport_register(&hl_jtag_transport);
 227 }
 228
 229 bool transport_is_hla(void)
 230 {
 231         struct transport *t;
 232         t = get_current_transport();
 233         return t == &hl_swd_transport || t == &hl_jtag_transport;
 234 }