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, write to the                         *
  20  *   Free Software Foundation, Inc.,                                       *
  21  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
  22  ***************************************************************************/
  23
  24 #ifndef ARM_JTAG
  25 #define ARM_JTAG
  26
  27 #include <jtag/jtag.h>
  28
  29 struct arm_jtag {
  30         struct jtag_tap *tap;
  31
  32         uint32_t scann_size;
  33         uint32_t scann_instr;
  34         uint32_t cur_scan_chain;
  35
  36         uint32_t intest_instr;
  37 };
  38
  39 int arm_jtag_set_instr_inner(struct arm_jtag *jtag_info, uint32_t new_instr,
  40                 void *no_verify_capture,
  41                 tap_state_t end_state);
  42
  43 static inline int arm_jtag_set_instr(struct arm_jtag *jtag_info,
  44                 uint32_t new_instr, void *no_verify_capture, tap_state_t end_state)
  45 {
  46         /* inline most common code path */
  47         struct jtag_tap *tap;
  48         tap = jtag_info->tap;
  49         assert(tap != NULL);
  50
  51         if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != new_instr)
  52                 return arm_jtag_set_instr_inner(jtag_info, new_instr, no_verify_capture, end_state);
  53
  54         return ERROR_OK;
  55
  56 }
  57
  58 int arm_jtag_scann_inner(struct arm_jtag *jtag_info, uint32_t new_scan_chain, tap_state_t end_state);
  59 static inline int arm_jtag_scann(struct arm_jtag *jtag_info, uint32_t new_scan_chain, tap_state_t end_state)
  60 {
  61         /* inline most common code path */
  62         int retval = ERROR_OK;
  63         if (jtag_info->cur_scan_chain != new_scan_chain)
  64                 return arm_jtag_scann_inner(jtag_info, new_scan_chain, end_state);
  65
  66         return retval;
  67 }
  68
  69 int arm_jtag_setup_connection(struct arm_jtag *jtag_info);
  70
  71 /* use this as a static so we can inline it in -O3 and refer to it via a pointer  */
  72 static inline void arm7flip32(jtag_callback_data_t arg)
  73 {
  74         uint8_t *in = (uint8_t *)arg;
  75         *((uint32_t *)arg) = flip_u32(le_to_h_u32(in), 32);
  76 }
  77
  78 static inline void arm_le_to_h_u32(jtag_callback_data_t arg)
  79 {
  80         uint8_t *in = (uint8_t *)arg;
  81         *((uint32_t *)arg) = le_to_h_u32(in);
  82 }
  83
  84 #endif /* ARM_JTAG */