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, write to the                         *
  20  *   Free Software Foundation, Inc.,                                       *
  21  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  22  ***************************************************************************/
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include "config.h"
  26 #endif
  27
  28 /* project specific includes */
  29 #include <jtag/interface.h>
  30 #include <transport/transport.h>
  31 #include <helper/time_support.h>
  32
  33 #include <jtag/hla/hla_tcl.h>
  34 #include <jtag/hla/hla_layout.h>
  35 #include <jtag/hla/hla_transport.h>
  36 #include <jtag/hla/hla_interface.h>
  37
  38 #include <target/target.h>
  39
  40 static struct hl_interface_s hl_if = { {0, 0, 0, 0, 0, HL_TRANSPORT_UNKNOWN, 0, false}, 0, 0 };
  41
  42 int hl_interface_open(enum hl_transports tr)
  43 {
  44         LOG_DEBUG("hl_interface_open");
  45
  46         enum reset_types jtag_reset_config = jtag_get_reset_config();
  47
  48         if (jtag_reset_config & RESET_CNCT_UNDER_SRST) {
  49                 if (jtag_reset_config & RESET_SRST_NO_GATING)
  50                         hl_if.param.connect_under_reset = true;
  51                 else
  52                         LOG_WARNING("\'srst_nogate\' reset_config option is required");
  53         }
  54
  55         /* set transport mode */
  56         hl_if.param.transport = tr;
  57
  58         int result = hl_if.layout->open(&hl_if);
  59         if (result != ERROR_OK)
  60                 return result;
  61
  62         return hl_interface_init_reset();
  63 }
  64
  65 int hl_interface_init_target(struct target *t)
  66 {
  67         int res;
  68
  69         LOG_DEBUG("hl_interface_init_target");
  70
  71         /* this is the interface for the current target and we
  72          * can setup the private pointer in the tap structure
  73          * if the interface match the tap idcode
  74          */
  75         res = hl_if.layout->api->idcode(hl_if.fd, &t->tap->idcode);
  76
  77         if (res != ERROR_OK)
  78                 return res;
  79
  80         unsigned ii, limit = t->tap->expected_ids_cnt;
  81         int found = 0;
  82
  83         for (ii = 0; ii < limit; ii++) {
  84                 uint32_t expected = t->tap->expected_ids[ii];
  85
  86                 /* treat "-expected-id 0" as a "don't-warn" wildcard */
  87                 if (!expected || (t->tap->idcode == expected)) {
  88                         found = 1;
  89                         break;
  90                 }
  91         }
  92
  93         if (found == 0) {
  94                 LOG_ERROR("hl_interface_init_target: target not found: idcode: 0x%08x",
  95                                 t->tap->idcode);
  96                 return ERROR_FAIL;
  97         }
  98
  99         t->tap->priv = &hl_if;
 100         t->tap->hasidcode = 1;
 101
 102         return ERROR_OK;
 103 }
 104
 105 static int hl_interface_init(void)
 106 {
 107         LOG_DEBUG("hl_interface_init");
 108
 109         /* here we can initialize the layout */
 110         return hl_layout_init(&hl_if);
 111 }
 112
 113 static int hl_interface_quit(void)
 114 {
 115         LOG_DEBUG("hl_interface_quit");
 116
 117         return ERROR_OK;
 118 }
 119
 120 static int hl_interface_execute_queue(void)
 121 {
 122         LOG_DEBUG("hl_interface_execute_queue: ignored");
 123
 124         return ERROR_OK;
 125 }
 126
 127 int hl_interface_init_reset(void)
 128 {
 129         /* incase the adapter has not already handled asserting srst
 130          * we will attempt it again */
 131         if (hl_if.param.connect_under_reset) {
 132                 jtag_add_reset(0, 1);
 133                 hl_if.layout->api->assert_srst(hl_if.fd, 0);
 134         }
 135
 136         return ERROR_OK;
 137 }
 138
 139 COMMAND_HANDLER(hl_interface_handle_device_desc_command)
 140 {
 141         LOG_DEBUG("hl_interface_handle_device_desc_command");
 142
 143         if (CMD_ARGC == 1) {
 144                 hl_if.param.device_desc = strdup(CMD_ARGV[0]);
 145         } else {
 146                 LOG_ERROR("expected exactly one argument to hl_device_desc <description>");
 147         }
 148
 149         return ERROR_OK;
 150 }
 151
 152 COMMAND_HANDLER(hl_interface_handle_serial_command)
 153 {
 154         LOG_DEBUG("hl_interface_handle_serial_command");
 155
 156         if (CMD_ARGC == 1) {
 157                 hl_if.param.serial = strdup(CMD_ARGV[0]);
 158         } else {
 159                 LOG_ERROR("expected exactly one argument to hl_serial <serial-number>");
 160         }
 161
 162         return ERROR_OK;
 163 }
 164
 165 COMMAND_HANDLER(hl_interface_handle_layout_command)
 166 {
 167         LOG_DEBUG("hl_interface_handle_layout_command");
 168
 169         if (CMD_ARGC != 1) {
 170                 LOG_ERROR("Need exactly one argument to stlink_layout");
 171                 return ERROR_COMMAND_SYNTAX_ERROR;
 172         }
 173
 174         if (hl_if.layout) {
 175                 LOG_ERROR("already specified hl_layout %s",
 176                                 hl_if.layout->name);
 177                 return (strcmp(hl_if.layout->name, CMD_ARGV[0]) != 0)
 178                     ? ERROR_FAIL : ERROR_OK;
 179         }
 180
 181         for (const struct hl_layout *l = hl_layout_get_list(); l->name;
 182              l++) {
 183                 if (strcmp(l->name, CMD_ARGV[0]) == 0) {
 184                         hl_if.layout = l;
 185                         return ERROR_OK;
 186                 }
 187         }
 188
 189         LOG_ERROR("No adapter layout '%s' found", CMD_ARGV[0]);
 190         return ERROR_FAIL;
 191 }
 192
 193 COMMAND_HANDLER(hl_interface_handle_vid_pid_command)
 194 {
 195         LOG_DEBUG("hl_interface_handle_vid_pid_command");
 196
 197         if (CMD_ARGC != 2) {
 198                 LOG_WARNING("ignoring extra IDs in hl_vid_pid (maximum is 1 pair)");
 199                 return ERROR_COMMAND_SYNTAX_ERROR;
 200         }
 201
 202         COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0], hl_if.param.vid);
 203         COMMAND_PARSE_NUMBER(u16, CMD_ARGV[1], hl_if.param.pid);
 204
 205         return ERROR_OK;
 206 }
 207
 208 COMMAND_HANDLER(stlink_interface_handle_api_command)
 209 {
 210         if (CMD_ARGC != 1)
 211                 return ERROR_COMMAND_SYNTAX_ERROR;
 212
 213         unsigned new_api;
 214         COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], new_api);
 215         if ((new_api == 0) || (new_api > 2))
 216                 return ERROR_COMMAND_SYNTAX_ERROR;
 217
 218         hl_if.param.api = new_api;
 219
 220         return ERROR_OK;
 221 }
 222
 223 static const struct command_registration hl_interface_command_handlers[] = {
 224         {
 225          .name = "hla_device_desc",
 226          .handler = &hl_interface_handle_device_desc_command,
 227          .mode = COMMAND_CONFIG,
 228          .help = "set the a device description of the adapter",
 229          .usage = "description_string",
 230          },
 231         {
 232          .name = "hla_serial",
 233          .handler = &hl_interface_handle_serial_command,
 234          .mode = COMMAND_CONFIG,
 235          .help = "set the serial number of the adapter",
 236          .usage = "serial_string",
 237          },
 238         {
 239          .name = "hla_layout",
 240          .handler = &hl_interface_handle_layout_command,
 241          .mode = COMMAND_CONFIG,
 242          .help = "set the layout of the adapter",
 243          .usage = "layout_name",
 244          },
 245         {
 246          .name = "hla_vid_pid",
 247          .handler = &hl_interface_handle_vid_pid_command,
 248          .mode = COMMAND_CONFIG,
 249          .help = "the vendor and product ID of the adapter",
 250          .usage = "(vid pid)* ",
 251          },
 252          {
 253          .name = "stlink_api",
 254          .handler = &stlink_interface_handle_api_command,
 255          .mode = COMMAND_CONFIG,
 256          .help = "set the desired stlink api level",
 257          .usage = "api version 1 or 2",
 258          },
 259         COMMAND_REGISTRATION_DONE
 260 };
 261
 262 struct jtag_interface hl_interface = {
 263         .name = "hla",
 264         .supported = 0,
 265         .commands = hl_interface_command_handlers,
 266         .transports = hl_transports,
 267         .init = hl_interface_init,
 268         .quit = hl_interface_quit,
 269         .execute_queue = hl_interface_execute_queue,
 270 };