src/jtag/minidummy/minidummy.c

   1 /***************************************************************************
   2  *   Copyright (C) 2007-2008 by Øyvind Harboe                              *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  18  ***************************************************************************/
  19 #ifdef HAVE_CONFIG_H
  20 #include "config.h"
  21 #endif
  22
  23 #include <jtag/jtag.h>
  24 #include <target/embeddedice.h>
  25 #include <jtag/minidriver.h>
  26 #include <jtag/interface.h>
  27
  28 struct jtag_interface minidummy_interface =
  29 {
  30         .name = "minidummy",
  31         .execute_queue = NULL,
  32         .speed = NULL,
  33         .commands = NULL,
  34         .init = NULL,
  35         .quit = NULL,
  36         .khz = NULL,
  37         .speed_div = NULL,
  38         .power_dropout = NULL,
  39         .srst_asserted = NULL,
  40 };
  41
  42 int interface_jtag_execute_queue(void)
  43 {
  44         /* synchronously do the operation here */
  45
  46         return ERROR_OK;
  47 }
  48
  49 int interface_jtag_add_ir_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
  50 {
  51         /* synchronously do the operation here */
  52
  53         return ERROR_OK;
  54
  55 }
  56
  57 int interface_jtag_add_plain_ir_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
  58 {
  59         /* synchronously do the operation here */
  60
  61         return ERROR_OK;
  62 }
  63
  64 int interface_jtag_add_dr_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
  65 {
  66         /* synchronously do the operation here */
  67
  68         return ERROR_OK;
  69 }
  70
  71 int interface_jtag_add_plain_dr_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
  72 {
  73         /* synchronously do the operation here */
  74
  75         return ERROR_OK;
  76 }
  77
  78 int interface_jtag_add_tlr()
  79 {
  80         /* synchronously do the operation here */
  81
  82         return ERROR_OK;
  83 }
  84
  85 int interface_jtag_add_reset(int req_trst, int req_srst)
  86 {
  87         /* synchronously do the operation here */
  88
  89         return ERROR_OK;
  90 }
  91
  92 int interface_jtag_add_runtest(int num_cycles, tap_state_t state)
  93 {
  94         /* synchronously do the operation here */
  95
  96         return ERROR_OK;
  97 }
  98
  99 int interface_jtag_add_clocks(int num_cycles)
 100 {
 101         /* synchronously do the operation here */
 102
 103         return ERROR_OK;
 104 }
 105
 106 int interface_jtag_add_sleep(uint32_t us)
 107 {
 108         jtag_sleep(us);
 109         return ERROR_OK;
 110 }
 111
 112 int interface_jtag_add_pathmove(int num_states, const tap_state_t *path)
 113 {
 114         int state_count;
 115         int tms = 0;
 116
 117         state_count = 0;
 118
 119         tap_state_t cur_state = cmd_queue_cur_state;
 120
 121         while (num_states)
 122         {
 123                 if (tap_state_transition(cur_state, false) == path[state_count])
 124                 {
 125                         tms = 0;
 126                 }
 127                 else if (tap_state_transition(cur_state, true) == path[state_count])
 128                 {
 129                         tms = 1;
 130                 }
 131                 else
 132                 {
 133                         LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[state_count]));
 134                         exit(-1);
 135                 }
 136
 137                 /* synchronously do the operation here */
 138
 139                 cur_state = path[state_count];
 140                 state_count++;
 141                 num_states--;
 142         }
 143
 144
 145         /* synchronously do the operation here */
 146
 147         return ERROR_OK;
 148 }
 149
 150 void embeddedice_write_dcc(struct jtag_tap *tap, int reg_addr, uint8_t *buffer, int little, int count)
 151 {
 152         int i;
 153         for (i = 0; i < count; i++)
 154         {
 155                 embeddedice_write_reg_inner(tap, reg_addr, fast_target_buffer_get_u32(buffer, little));
 156                 buffer += 4;
 157         }
 158 }