src/target/etb.h

   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, see <http://www.gnu.org/licenses/>. *
  17  ***************************************************************************/
  18
  19 #ifndef OPENOCD_TARGET_ETB_H
  20 #define OPENOCD_TARGET_ETB_H
  21
  22 /* ETB registers */
  23 enum {
  24         ETB_ID = 0x00,
  25         ETB_RAM_DEPTH = 0x01,
  26         ETB_RAM_WIDTH = 0x02,
  27         ETB_STATUS = 0x03,
  28         ETB_RAM_DATA = 0x04,
  29         ETB_RAM_READ_POINTER = 0x05,
  30         ETB_RAM_WRITE_POINTER = 0x06,
  31         ETB_TRIGGER_COUNTER = 0x07,
  32         ETB_CTRL = 0x08,
  33 };
  34
  35 struct etb {
  36         struct etm_context *etm_ctx;
  37         struct jtag_tap *tap;
  38         uint32_t cur_scan_chain;
  39         struct reg_cache *reg_cache;
  40
  41         /* ETB parameters */
  42         uint32_t ram_depth;
  43         uint32_t ram_width;
  44
  45         /** how much trace buffer to fill after trigger */
  46         unsigned trigger_percent;
  47 };
  48
  49 struct etb_reg {
  50         uint32_t addr;
  51         struct etb *etb;
  52 };
  53
  54 extern struct etm_capture_driver etb_capture_driver;
  55
  56 struct reg_cache *etb_build_reg_cache(struct etb *etb);
  57
  58 #endif /* OPENOCD_TARGET_ETB_H */