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   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include <string.h>
  25
  26 #include "etm_dummy.h"
  27 #include "etm.h"
  28
  29 #include "arm7_9_common.h"
  30 #include "log.h"
  31 #include "types.h"
  32 #include "binarybuffer.h"
  33 #include "target.h"
  34 #include "register.h"
  35 #include "jtag.h"
  36
  37 #include <stdlib.h>
  38
  39 static int handle_etm_dummy_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
  40 {
  41         target_t *target;
  42         armv4_5_common_t *armv4_5;
  43         arm7_9_common_t *arm7_9;
  44
  45         target = get_target_by_num(strtoul(args[0], NULL, 0));
  46
  47         if (!target)
  48         {
  49                 LOG_ERROR("target number '%s' not defined", args[0]);
  50                 return ERROR_FAIL;
  51         }
  52
  53         if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
  54         {
  55                 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
  56                 return ERROR_FAIL;
  57         }
  58
  59         if (arm7_9->etm_ctx)
  60         {
  61                 arm7_9->etm_ctx->capture_driver_priv = NULL;
  62         }
  63         else
  64         {
  65                 LOG_ERROR("target has no ETM defined, ETM dummy left unconfigured");
  66                 return ERROR_FAIL;
  67         }
  68
  69         return ERROR_OK;
  70 }
  71
  72 static int etm_dummy_register_commands(struct command_context_s *cmd_ctx)
  73 {
  74         command_t *etm_dummy_cmd;
  75
  76         etm_dummy_cmd = register_command(cmd_ctx, NULL, "etm_dummy", NULL, COMMAND_ANY, "Dummy ETM capture driver");
  77
  78         register_command(cmd_ctx, etm_dummy_cmd, "config", handle_etm_dummy_config_command, COMMAND_CONFIG, NULL);
  79
  80         return ERROR_OK;
  81 }
  82
  83 static int etm_dummy_init(etm_context_t *etm_ctx)
  84 {
  85         return ERROR_OK;
  86 }
  87
  88 static trace_status_t etm_dummy_status(etm_context_t *etm_ctx)
  89 {
  90         return TRACE_IDLE;
  91 }
  92
  93 static int etm_dummy_read_trace(etm_context_t *etm_ctx)
  94 {
  95         return ERROR_OK;
  96 }
  97
  98 static int etm_dummy_start_capture(etm_context_t *etm_ctx)
  99 {
 100         return ERROR_ETM_PORTMODE_NOT_SUPPORTED;
 101 }
 102
 103 static int etm_dummy_stop_capture(etm_context_t *etm_ctx)
 104 {
 105         return ERROR_OK;
 106 }
 107
 108 etm_capture_driver_t etm_dummy_capture_driver =
 109 {
 110         .name = "dummy",
 111         .register_commands = etm_dummy_register_commands,
 112         .init = etm_dummy_init,
 113         .status = etm_dummy_status,
 114         .start_capture = etm_dummy_start_capture,
 115         .stop_capture = etm_dummy_stop_capture,
 116         .read_trace = etm_dummy_read_trace,
 117 };