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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, jtag_add_end_state(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 static __inline__ void virtexflip32(u8 *in)
  96 {
  97         *((u32 *)in)=flip_u32(le_to_h_u32(in), 32);
  98 }
  99
 100 int virtex2_receive_32(struct pld_device_s *pld_device, int num_words, u32 *words)
 101 {
 102         virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
 103         scan_field_t scan_field;
 104
 105         scan_field.tap = virtex2_info->tap;
 106         scan_field.num_bits = 32;
 107         scan_field.out_value = NULL;
 108         scan_field.in_value = NULL;
 109
 110         virtex2_set_instr(virtex2_info->tap, 0x4); /* CFG_OUT */
 111
 112         while (num_words--)
 113         {
 114                 scan_field.in_value = (u8 *)words;
 115
 116                 jtag_add_dr_scan(1, &scan_field, TAP_DRPAUSE);
 117
 118                 jtag_add_callback(virtexflip32, (u8 *)words);
 119
 120                 words++;;
 121         }
 122
 123         return ERROR_OK;
 124 }
 125
 126 int virtex2_read_stat(struct pld_device_s *pld_device, u32 *status)
 127 {
 128         u32 data[5];
 129
 130         jtag_add_tlr();
 131
 132         data[0] = 0xaa995566; /* synch word */
 133         data[1] = 0x2800E001; /* Type 1, read, address 7, 1 word */
 134         data[2] = 0x20000000; /* NOOP (Type 1, read, address 0, 0 words */
 135         data[3] = 0x20000000; /* NOOP */
 136         data[4] = 0x20000000; /* NOOP */
 137         virtex2_send_32(pld_device, 5, data);
 138
 139         virtex2_receive_32(pld_device, 1, status);
 140
 141         jtag_execute_queue();
 142
 143         LOG_DEBUG("status: 0x%8.8x", *status);
 144
 145         return ERROR_OK;
 146 }
 147
 148 int virtex2_load(struct pld_device_s *pld_device, char *filename)
 149 {
 150         virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
 151         xilinx_bit_file_t bit_file;
 152         int retval;
 153         unsigned int i;
 154
 155         scan_field_t field;
 156
 157         field.tap = virtex2_info->tap;
 158
 159         field.in_value = NULL;
 160
 161
 162
 163
 164
 165         if ((retval = xilinx_read_bit_file(&bit_file, filename)) != ERROR_OK)
 166                 return retval;
 167
 168         jtag_add_end_state(TAP_IDLE);
 169         virtex2_set_instr(virtex2_info->tap, 0xb); /* JPROG_B */
 170         jtag_execute_queue();
 171         jtag_add_sleep(1000);
 172
 173         virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
 174         jtag_execute_queue();
 175
 176         for (i = 0; i < bit_file.length; i++)
 177                 bit_file.data[i] = flip_u32(bit_file.data[i], 8);
 178
 179         field.num_bits = bit_file.length * 8;
 180         field.out_value = bit_file.data;
 181
 182         jtag_add_dr_scan(1, &field, TAP_DRPAUSE);
 183         jtag_execute_queue();
 184
 185         jtag_add_tlr();
 186
 187         jtag_add_end_state(TAP_IDLE);
 188         virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
 189         jtag_add_runtest(13, jtag_add_end_state(TAP_IDLE));
 190         virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
 191         virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
 192         virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
 193         jtag_add_runtest(13, jtag_add_end_state(TAP_IDLE));
 194         virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
 195         jtag_execute_queue();
 196
 197         return ERROR_OK;
 198 }
 199
 200 int virtex2_handle_read_stat_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 201 {
 202         pld_device_t *device;
 203         virtex2_pld_device_t *virtex2_info;
 204         u32 status;
 205
 206         if (argc < 1)
 207         {
 208                 command_print(cmd_ctx, "usage: virtex2 read_stat <num>");
 209                 return ERROR_OK;
 210         }
 211
 212         device = get_pld_device_by_num(strtoul(args[0], NULL, 0));
 213         if (!device)
 214         {
 215                 command_print(cmd_ctx, "pld device '#%s' is out of bounds", args[0]);
 216                 return ERROR_OK;
 217         }
 218
 219         virtex2_info = device->driver_priv;
 220
 221         virtex2_read_stat(device, &status);
 222
 223         command_print(cmd_ctx, "virtex2 status register: 0x%8.8x", status);
 224
 225         return ERROR_OK;
 226 }
 227
 228 int virtex2_register_commands(struct command_context_s *cmd_ctx)
 229 {
 230         command_t *virtex2_cmd = register_command(cmd_ctx, NULL, "virtex2", NULL, COMMAND_ANY, "virtex2 specific commands");
 231
 232         register_command(cmd_ctx, virtex2_cmd, "read_stat", virtex2_handle_read_stat_command, COMMAND_EXEC,
 233                                          "read Virtex-II status register");
 234
 235         return ERROR_OK;
 236 }
 237
 238 int virtex2_pld_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct pld_device_s *pld_device)
 239 {
 240         jtag_tap_t *tap;
 241
 242         virtex2_pld_device_t *virtex2_info;
 243
 244         if (argc < 2)
 245         {
 246                 LOG_WARNING("incomplete pld device 'virtex2' configuration");
 247                 return ERROR_PLD_DEVICE_INVALID;
 248         }
 249
 250         tap = jtag_TapByString( args[1] );
 251         if( tap == NULL ){
 252                 command_print( cmd_ctx, "Tap: %s does not exist", args[1] );
 253                 return ERROR_OK;
 254         }
 255
 256         virtex2_info = malloc(sizeof(virtex2_pld_device_t));
 257         pld_device->driver_priv = virtex2_info;
 258         virtex2_info->tap = tap;
 259
 260         return ERROR_OK;
 261 }