src/jtag/hla/hla_interface.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 <transport/transport.h>
  29 #include <helper/time_support.h>
  30
  31 #include <jtag/hla/hla_tcl.h>
  32 #include <jtag/hla/hla_layout.h>
  33 #include <jtag/hla/hla_transport.h>
  34 #include <jtag/hla/hla_interface.h>
  35
  36 #include <target/target.h>
  37
  38 static struct hl_interface_s hl_if = { {0, 0, { 0 }, { 0 }, 0, HL_TRANSPORT_UNKNOWN, false, -1}, 0, 0 };
  39
  40 int hl_interface_open(enum hl_transports tr)
  41 {
  42         LOG_DEBUG("hl_interface_open");
  43
  44         enum reset_types jtag_reset_config = jtag_get_reset_config();
  45
  46         if (jtag_reset_config & RESET_CNCT_UNDER_SRST) {
  47                 if (jtag_reset_config & RESET_SRST_NO_GATING)
  48                         hl_if.param.connect_under_reset = true;
  49                 else
  50                         LOG_WARNING("\'srst_nogate\' reset_config option is required");
  51         }
  52
  53         /* set transport mode */
  54         hl_if.param.transport = tr;
  55
  56         int result = hl_if.layout->open(&hl_if);
  57         if (result != ERROR_OK)
  58                 return result;
  59
  60         return hl_interface_init_reset();
  61 }
  62
  63 int hl_interface_init_target(struct target *t)
  64 {
  65         int res;
  66
  67         LOG_DEBUG("hl_interface_init_target");
  68
  69         /* this is the interface for the current target and we
  70          * can setup the private pointer in the tap structure
  71          * if the interface match the tap idcode
  72          */
  73         res = hl_if.layout->api->idcode(hl_if.handle, &t->tap->idcode);
  74
  75         if (res != ERROR_OK)
  76                 return res;
  77
  78         unsigned ii, limit = t->tap->expected_ids_cnt;
  79         int found = 0;
  80
  81         for (ii = 0; ii < limit; ii++) {
  82                 uint32_t expected = t->tap->expected_ids[ii];
  83
  84                 /* treat "-expected-id 0" as a "don't-warn" wildcard */
  85                 if (!expected || !t->tap->idcode ||
  86                     (t->tap->idcode == expected)) {
  87                         found = 1;
  88                         break;
  89                 }
  90         }
  91
  92         if (found == 0) {
  93                 LOG_WARNING("UNEXPECTED idcode: 0x%08" PRIx32, t->tap->idcode);
  94                 for (ii = 0; ii < limit; ii++)
  95                         LOG_ERROR("expected %u of %u: 0x%08" PRIx32, ii + 1, limit,
  96                                 t->tap->expected_ids[ii]);
  97
  98                 return ERROR_FAIL;
  99         }
 100
 101         t->tap->priv = &hl_if;
 102         t->tap->hasidcode = 1;
 103
 104         return ERROR_OK;
 105 }
 106
 107 static int hl_interface_init(void)
 108 {
 109         LOG_DEBUG("hl_interface_init");
 110
 111         /* here we can initialize the layout */
 112         return hl_layout_init(&hl_if);
 113 }
 114
 115 static int hl_interface_quit(void)
 116 {
 117         LOG_DEBUG("hl_interface_quit");
 118
 119         if (hl_if.layout->api->close)
 120                 hl_if.layout->api->close(hl_if.handle);
 121
 122         jtag_command_queue_reset();
 123
 124         free((void *)hl_if.param.device_desc);
 125         free((void *)hl_if.param.serial);
 126
 127         return ERROR_OK;
 128 }
 129
 130 static int hl_interface_reset(int req_trst, int req_srst)
 131 {
 132         return hl_if.layout->api->assert_srst(hl_if.handle, req_srst ? 0 : 1);
 133 }
 134
 135 int hl_interface_init_reset(void)
 136 {
 137         /* in case the adapter has not already handled asserting srst
 138          * we will attempt it again */
 139         if (hl_if.param.connect_under_reset) {
 140                 adapter_assert_reset();
 141         } else {
 142                 adapter_deassert_reset();
 143         }
 144
 145         return ERROR_OK;
 146 }
 147
 148 static int hl_interface_khz(int khz, int *jtag_speed)
 149 {
 150         if (hl_if.layout->api->speed == NULL)
 151                 return ERROR_OK;
 152
 153         *jtag_speed = hl_if.layout->api->speed(hl_if.handle, khz, true);
 154         return ERROR_OK;
 155 }
 156
 157 static int hl_interface_speed_div(int speed, int *khz)
 158 {
 159         *khz = speed;
 160         return ERROR_OK;
 161 }
 162
 163 static int hl_interface_speed(int speed)
 164 {
 165         if (hl_if.layout->api->speed == NULL)
 166                 return ERROR_OK;
 167
 168         if (hl_if.handle == NULL) {
 169                 /* pass speed as initial param as interface not open yet */
 170                 hl_if.param.initial_interface_speed = speed;
 171                 return ERROR_OK;
 172         }
 173
 174         hl_if.layout->api->speed(hl_if.handle, speed, false);
 175
 176         return ERROR_OK;
 177 }
 178
 179 int hl_interface_override_target(const char **targetname)
 180 {
 181         if (hl_if.layout->api->override_target) {
 182                 if (hl_if.layout->api->override_target(*targetname)) {
 183                         *targetname = "hla_target";
 184                         return ERROR_OK;
 185                 } else
 186                         return ERROR_FAIL;
 187         }
 188         return ERROR_FAIL;
 189 }
 190
 191 int hl_interface_config_trace(bool enabled, enum tpiu_pin_protocol pin_protocol,
 192                 uint32_t port_size, unsigned int *trace_freq,
 193                 unsigned int traceclkin_freq, uint16_t *prescaler)
 194 {
 195         if (hl_if.layout->api->config_trace)
 196                 return hl_if.layout->api->config_trace(hl_if.handle, enabled,
 197                         pin_protocol, port_size, trace_freq, traceclkin_freq, prescaler);
 198         else if (enabled) {
 199                 LOG_ERROR("The selected interface does not support tracing");
 200                 return ERROR_FAIL;
 201         }
 202
 203         return ERROR_OK;
 204 }
 205
 206 int hl_interface_poll_trace(uint8_t *buf, size_t *size)
 207 {
 208         if (hl_if.layout->api->poll_trace)
 209                 return hl_if.layout->api->poll_trace(hl_if.handle, buf, size);
 210
 211         return ERROR_FAIL;
 212 }
 213
 214 COMMAND_HANDLER(hl_interface_handle_device_desc_command)
 215 {
 216         LOG_DEBUG("hl_interface_handle_device_desc_command");
 217
 218         if (CMD_ARGC == 1) {
 219                 hl_if.param.device_desc = strdup(CMD_ARGV[0]);
 220         } else {
 221                 LOG_ERROR("expected exactly one argument to hl_device_desc <description>");
 222         }
 223
 224         return ERROR_OK;
 225 }
 226
 227 COMMAND_HANDLER(hl_interface_handle_serial_command)
 228 {
 229         LOG_DEBUG("hl_interface_handle_serial_command");
 230
 231         if (CMD_ARGC == 1) {
 232                 hl_if.param.serial = strdup(CMD_ARGV[0]);
 233         } else {
 234                 LOG_ERROR("expected exactly one argument to hl_serial <serial-number>");
 235         }
 236
 237         return ERROR_OK;
 238 }
 239
 240 COMMAND_HANDLER(hl_interface_handle_layout_command)
 241 {
 242         LOG_DEBUG("hl_interface_handle_layout_command");
 243
 244         if (CMD_ARGC != 1) {
 245                 LOG_ERROR("Need exactly one argument to stlink_layout");
 246                 return ERROR_COMMAND_SYNTAX_ERROR;
 247         }
 248
 249         if (hl_if.layout) {
 250                 LOG_ERROR("already specified hl_layout %s",
 251                                 hl_if.layout->name);
 252                 return (strcmp(hl_if.layout->name, CMD_ARGV[0]) != 0)
 253                     ? ERROR_FAIL : ERROR_OK;
 254         }
 255
 256         for (const struct hl_layout *l = hl_layout_get_list(); l->name;
 257              l++) {
 258                 if (strcmp(l->name, CMD_ARGV[0]) == 0) {
 259                         hl_if.layout = l;
 260                         return ERROR_OK;
 261                 }
 262         }
 263
 264         LOG_ERROR("No adapter layout '%s' found", CMD_ARGV[0]);
 265         return ERROR_FAIL;
 266 }
 267
 268 COMMAND_HANDLER(hl_interface_handle_vid_pid_command)
 269 {
 270         if (CMD_ARGC > HLA_MAX_USB_IDS * 2) {
 271                 LOG_WARNING("ignoring extra IDs in hla_vid_pid "
 272                         "(maximum is %d pairs)", HLA_MAX_USB_IDS);
 273                 CMD_ARGC = HLA_MAX_USB_IDS * 2;
 274         }
 275         if (CMD_ARGC < 2 || (CMD_ARGC & 1)) {
 276                 LOG_WARNING("incomplete hla_vid_pid configuration directive");
 277                 return ERROR_COMMAND_SYNTAX_ERROR;
 278         }
 279
 280         unsigned i;
 281         for (i = 0; i < CMD_ARGC; i += 2) {
 282                 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i], hl_if.param.vid[i / 2]);
 283                 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], hl_if.param.pid[i / 2]);
 284         }
 285
 286         /*
 287          * Explicitly terminate, in case there are multiple instances of
 288          * hla_vid_pid.
 289          */
 290         hl_if.param.vid[i / 2] = hl_if.param.pid[i / 2] = 0;
 291
 292         return ERROR_OK;
 293 }
 294
 295 COMMAND_HANDLER(interface_handle_hla_command)
 296 {
 297         if (CMD_ARGC != 1)
 298                 return ERROR_COMMAND_SYNTAX_ERROR;
 299
 300         if (!hl_if.layout->api->custom_command) {
 301                 LOG_ERROR("The selected adapter doesn't support custom commands");
 302                 return ERROR_FAIL;
 303         }
 304
 305         hl_if.layout->api->custom_command(hl_if.handle, CMD_ARGV[0]);
 306
 307         return ERROR_OK;
 308 }
 309
 310 static const struct command_registration hl_interface_command_handlers[] = {
 311         {
 312          .name = "hla_device_desc",
 313          .handler = &hl_interface_handle_device_desc_command,
 314          .mode = COMMAND_CONFIG,
 315          .help = "set the a device description of the adapter",
 316          .usage = "description_string",
 317          },
 318         {
 319          .name = "hla_serial",
 320          .handler = &hl_interface_handle_serial_command,
 321          .mode = COMMAND_CONFIG,
 322          .help = "set the serial number of the adapter",
 323          .usage = "serial_string",
 324          },
 325         {
 326          .name = "hla_layout",
 327          .handler = &hl_interface_handle_layout_command,
 328          .mode = COMMAND_CONFIG,
 329          .help = "set the layout of the adapter",
 330          .usage = "layout_name",
 331          },
 332         {
 333          .name = "hla_vid_pid",
 334          .handler = &hl_interface_handle_vid_pid_command,
 335          .mode = COMMAND_CONFIG,
 336          .help = "the vendor and product ID of the adapter",
 337          .usage = "(vid pid)* ",
 338          },
 339          {
 340          .name = "hla_command",
 341          .handler = &interface_handle_hla_command,
 342          .mode = COMMAND_EXEC,
 343          .help = "execute a custom adapter-specific command",
 344          .usage = "hla_command <command>",
 345          },
 346         COMMAND_REGISTRATION_DONE
 347 };
 348
 349 struct adapter_driver hl_adapter_driver = {
 350         .name = "hla",
 351         .transports = hl_transports,
 352         .commands = hl_interface_command_handlers,
 353
 354         .init = hl_interface_init,
 355         .quit = hl_interface_quit,
 356         .reset = hl_interface_reset,
 357         .speed = &hl_interface_speed,
 358         .khz = &hl_interface_khz,
 359         .speed_div = &hl_interface_speed_div,
 360         .config_trace = &hl_interface_config_trace,
 361         .poll_trace = &hl_interface_poll_trace,
 362
 363         /* no ops for HLA, targets hla_target and stm8 intercept them all */
 364 };