git.sur5r.net Git - openocd/blob - src/target/arm_jtag.h

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007-2010 Øyvind Harboe                                 *
   6  *   oyvind.harboe@zylin.com                                               *
   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 #ifndef ARM_JTAG
  23 #define ARM_JTAG
  24
  25 #include <jtag/jtag.h>
  26
  27 struct arm_jtag {
  28         struct jtag_tap *tap;
  29
  30         uint32_t scann_size;
  31         uint32_t scann_instr;
  32         uint32_t cur_scan_chain;
  33
  34         uint32_t intest_instr;
  35 };
  36
  37 int arm_jtag_set_instr_inner(struct jtag_tap *tap, uint32_t new_instr,
  38                 void *no_verify_capture,
  39                 tap_state_t end_state);
  40
  41 static inline int arm_jtag_set_instr(struct jtag_tap *tap,
  42                 uint32_t new_instr, void *no_verify_capture, tap_state_t end_state)
  43 {
  44         /* inline most common code path */
  45         if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != new_instr)
  46                 return arm_jtag_set_instr_inner(tap, new_instr, no_verify_capture, end_state);
  47
  48         return ERROR_OK;
  49
  50 }
  51
  52 int arm_jtag_scann_inner(struct arm_jtag *jtag_info, uint32_t new_scan_chain, tap_state_t end_state);
  53 static inline int arm_jtag_scann(struct arm_jtag *jtag_info, uint32_t new_scan_chain, tap_state_t end_state)
  54 {
  55         /* inline most common code path */
  56         int retval = ERROR_OK;
  57         if (jtag_info->cur_scan_chain != new_scan_chain)
  58                 return arm_jtag_scann_inner(jtag_info, new_scan_chain, end_state);
  59
  60         return retval;
  61 }
  62
  63 int arm_jtag_setup_connection(struct arm_jtag *jtag_info);
  64
  65 /* use this as a static so we can inline it in -O3 and refer to it via a pointer  */
  66 static inline void arm7flip32(jtag_callback_data_t arg)
  67 {
  68         uint8_t *in = (uint8_t *)arg;
  69         *((uint32_t *)arg) = flip_u32(le_to_h_u32(in), 32);
  70 }
  71
  72 static inline void arm_le_to_h_u32(jtag_callback_data_t arg)
  73 {
  74         uint8_t *in = (uint8_t *)arg;
  75         *((uint32_t *)arg) = le_to_h_u32(in);
  76 }
  77
  78 #endif /* ARM_JTAG */