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   1 /***************************************************************************
   2  *   Copyright (C) 2006 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, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "virtex2.h"
  25 #include "xilinx_bit.h"
  26 #include "pld.h"
  27
  28
  29 int virtex2_register_commands(struct command_context_s *cmd_ctx);
  30 int virtex2_pld_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct pld_device_s *pld_device);
  31 int virtex2_load(struct pld_device_s *pld_device, char *filename);
  32
  33 pld_driver_t virtex2_pld =
  34 {
  35         .name = "virtex2",
  36         .register_commands = virtex2_register_commands,
  37         .pld_device_command = virtex2_pld_device_command,
  38         .load = virtex2_load,
  39 };
  40
  41 int virtex2_set_instr(jtag_tap_t *tap, u32 new_instr)
  42 {
  43         if (tap==NULL)
  44                 return ERROR_FAIL;
  45
  46         if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != new_instr)
  47         {
  48                 scan_field_t field;
  49
  50                 field.tap = tap;
  51                 field.num_bits = tap->ir_length;
  52                 field.out_value = calloc(CEIL(field.num_bits, 8), 1);
  53                 buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
  54
  55                 field.in_value = NULL;
  56
  57
  58
  59
  60
  61                 jtag_add_ir_scan(1, &field, TAP_IDLE);
  62
  63                 free(field.out_value);
  64         }
  65
  66         return ERROR_OK;
  67 }
  68
  69 int virtex2_send_32(struct pld_device_s *pld_device, int num_words, u32 *words)
  70 {
  71         virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
  72         scan_field_t scan_field;
  73         u8 *values;
  74         int i;
  75
  76         values = malloc(num_words * 4);
  77
  78         scan_field.tap = virtex2_info->tap;
  79         scan_field.num_bits = num_words * 32;
  80         scan_field.out_value = values;
  81         scan_field.in_value = NULL;
  82
  83         for (i = 0; i < num_words; i++)
  84                 buf_set_u32(values + 4 * i, 0, 32, flip_u32(*words++, 32));
  85
  86         virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
  87
  88         jtag_add_dr_scan(1, &scan_field, TAP_DRPAUSE);
  89
  90         free(values);
  91
  92         return ERROR_OK;
  93 }
  94
  95
  96 int virtex2_receive_32(struct pld_device_s *pld_device, int num_words, u32 *words)
  97 {
  98         virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
  99         scan_field_t scan_field;
 100
 101         scan_field.tap = virtex2_info->tap;
 102         scan_field.num_bits = 32;
 103         scan_field.out_value = NULL;
 104         u8 tmp[4];
 105         scan_field.in_value = tmp;
 106
 107         virtex2_set_instr(virtex2_info->tap, 0x4); /* CFG_OUT */
 108
 109         while (num_words--)
 110         {
 111                 jtag_add_dr_scan_now(1, &scan_field, TAP_DRPAUSE);
 112
 113                 *words++=flip_u32(le_to_h_u32(tmp), 32);
 114         }
 115
 116         return ERROR_OK;
 117 }
 118
 119 int virtex2_read_stat(struct pld_device_s *pld_device, u32 *status)
 120 {
 121         u32 data[5];
 122
 123         jtag_add_tlr();
 124
 125         data[0] = 0xaa995566; /* synch word */
 126         data[1] = 0x2800E001; /* Type 1, read, address 7, 1 word */
 127         data[2] = 0x20000000; /* NOOP (Type 1, read, address 0, 0 words */
 128         data[3] = 0x20000000; /* NOOP */
 129         data[4] = 0x20000000; /* NOOP */
 130         virtex2_send_32(pld_device, 5, data);
 131
 132         virtex2_receive_32(pld_device, 1, status);
 133
 134         jtag_execute_queue();
 135
 136         LOG_DEBUG("status: 0x%8.8x", *status);
 137
 138         return ERROR_OK;
 139 }
 140
 141 int virtex2_load(struct pld_device_s *pld_device, char *filename)
 142 {
 143         virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
 144         xilinx_bit_file_t bit_file;
 145         int retval;
 146         unsigned int i;
 147
 148         scan_field_t field;
 149
 150         field.tap = virtex2_info->tap;
 151
 152         field.in_value = NULL;
 153
 154
 155
 156
 157
 158         if ((retval = xilinx_read_bit_file(&bit_file, filename)) != ERROR_OK)
 159                 return retval;
 160
 161         jtag_add_end_state(TAP_IDLE);
 162         virtex2_set_instr(virtex2_info->tap, 0xb); /* JPROG_B */
 163         jtag_execute_queue();
 164         jtag_add_sleep(1000);
 165
 166         virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
 167         jtag_execute_queue();
 168
 169         for (i = 0; i < bit_file.length; i++)
 170                 bit_file.data[i] = flip_u32(bit_file.data[i], 8);
 171
 172         field.num_bits = bit_file.length * 8;
 173         field.out_value = bit_file.data;
 174
 175         jtag_add_dr_scan(1, &field, TAP_DRPAUSE);
 176         jtag_execute_queue();
 177
 178         jtag_add_tlr();
 179
 180         jtag_add_end_state(TAP_IDLE);
 181         virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
 182         jtag_add_runtest(13, TAP_IDLE);
 183         virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
 184         virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
 185         virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
 186         jtag_add_runtest(13, TAP_IDLE);
 187         virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
 188         jtag_execute_queue();
 189
 190         return ERROR_OK;
 191 }
 192
 193 int virtex2_handle_read_stat_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 194 {
 195         pld_device_t *device;
 196         virtex2_pld_device_t *virtex2_info;
 197         u32 status;
 198
 199         if (argc < 1)
 200         {
 201                 command_print(cmd_ctx, "usage: virtex2 read_stat <num>");
 202                 return ERROR_OK;
 203         }
 204
 205         device = get_pld_device_by_num(strtoul(args[0], NULL, 0));
 206         if (!device)
 207         {
 208                 command_print(cmd_ctx, "pld device '#%s' is out of bounds", args[0]);
 209                 return ERROR_OK;
 210         }
 211
 212         virtex2_info = device->driver_priv;
 213
 214         virtex2_read_stat(device, &status);
 215
 216         command_print(cmd_ctx, "virtex2 status register: 0x%8.8x", status);
 217
 218         return ERROR_OK;
 219 }
 220
 221 int virtex2_register_commands(struct command_context_s *cmd_ctx)
 222 {
 223         command_t *virtex2_cmd = register_command(cmd_ctx, NULL, "virtex2", NULL, COMMAND_ANY, "virtex2 specific commands");
 224
 225         register_command(cmd_ctx, virtex2_cmd, "read_stat", virtex2_handle_read_stat_command, COMMAND_EXEC,
 226                                          "read Virtex-II status register");
 227
 228         return ERROR_OK;
 229 }
 230
 231 int virtex2_pld_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct pld_device_s *pld_device)
 232 {
 233         jtag_tap_t *tap;
 234
 235         virtex2_pld_device_t *virtex2_info;
 236
 237         if (argc < 2)
 238         {
 239                 LOG_WARNING("incomplete pld device 'virtex2' configuration");
 240                 return ERROR_PLD_DEVICE_INVALID;
 241         }
 242
 243         tap = jtag_TapByString( args[1] );
 244         if( tap == NULL ){
 245                 command_print( cmd_ctx, "Tap: %s does not exist", args[1] );
 246                 return ERROR_OK;
 247         }
 248
 249         virtex2_info = malloc(sizeof(virtex2_pld_device_t));
 250         pld_device->driver_priv = virtex2_info;
 251         virtex2_info->tap = tap;
 252
 253         return ERROR_OK;
 254 }