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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007,2008 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  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  22  ***************************************************************************/
  23 #ifndef ARM_JTAG
  24 #define ARM_JTAG
  25
  26 #include <jtag/jtag.h>
  27
  28 struct arm_jtag
  29 {
  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,  void *no_verify_capture);
  40 static inline int arm_jtag_set_instr(struct arm_jtag *jtag_info,
  41                 uint32_t new_instr, void *no_verify_capture)
  42 {
  43         /* inline most common code path */
  44         struct jtag_tap *tap;
  45         tap = jtag_info->tap;
  46         if (tap == NULL)
  47                 return ERROR_FAIL;
  48
  49         if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != new_instr)
  50         {
  51                 return arm_jtag_set_instr_inner(jtag_info, new_instr, no_verify_capture);
  52         }
  53
  54         return ERROR_OK;
  55
  56 }
  57
  58
  59 int arm_jtag_scann_inner(struct arm_jtag *jtag_info, uint32_t new_scan_chain);
  60 static inline int arm_jtag_scann(struct arm_jtag *jtag_info, uint32_t new_scan_chain)
  61 {
  62         /* inline most common code path */
  63         int retval = ERROR_OK;
  64         if (jtag_info->cur_scan_chain != new_scan_chain)
  65         {
  66                 return arm_jtag_scann_inner(jtag_info, new_scan_chain);
  67         }
  68
  69         return retval;
  70 }
  71
  72
  73 int arm_jtag_setup_connection(struct arm_jtag *jtag_info);
  74
  75 /* use this as a static so we can inline it in -O3 and refer to it via a pointer  */
  76 static __inline__ void arm7flip32(jtag_callback_data_t arg)
  77 {
  78   uint8_t *in = (uint8_t *)arg;
  79   *((uint32_t *)in) = flip_u32(le_to_h_u32(in), 32);
  80 }
  81
  82 static __inline__ void arm_le_to_h_u32(jtag_callback_data_t arg)
  83 {
  84   uint8_t *in = (uint8_t *)arg;
  85   *((uint32_t *)in) = le_to_h_u32(in);
  86 }
  87
  88
  89 #endif /* ARM_JTAG */
  90