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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
  26 #include "pld.h"
  27 #include "xilinx_bit.h"
  28 #include "command.h"
  29 #include "log.h"
  30 #include "jtag.h"
  31
  32 #include <stdlib.h>
  33
  34 int virtex2_register_commands(struct command_context_s *cmd_ctx);
  35 int virtex2_pld_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct pld_device_s *pld_device);
  36 int virtex2_load(struct pld_device_s *pld_device, char *filename);
  37
  38 pld_driver_t virtex2_pld =
  39 {
  40         .name = "virtex2",
  41         .register_commands = virtex2_register_commands,
  42         .pld_device_command = virtex2_pld_device_command,
  43         .load = virtex2_load,
  44 };
  45
  46 int virtex2_set_instr(jtag_tap_t *tap, u32 new_instr)
  47 {
  48         if (tap==NULL)
  49                 return ERROR_FAIL;
  50
  51         if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != new_instr)
  52         {
  53                 scan_field_t field;
  54
  55                 field.tap = tap;
  56                 field.num_bits = tap->ir_length;
  57                 field.out_value = calloc(CEIL(field.num_bits, 8), 1);
  58                 buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
  59
  60                 field.in_value = NULL;
  61                 field.in_check_value = NULL;
  62                 field.in_check_mask = NULL;
  63                 field.in_handler = NULL;
  64                 field.in_handler_priv = NULL;
  65
  66                 jtag_add_ir_scan(1, &field, TAP_IDLE);
  67
  68                 free(field.out_value);
  69         }
  70
  71         return ERROR_OK;
  72 }
  73
  74 int virtex2_send_32(struct pld_device_s *pld_device, int num_words, u32 *words)
  75 {
  76         virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
  77         scan_field_t scan_field;
  78         u8 *values;
  79         int i;
  80
  81         values = malloc(num_words * 4);
  82
  83         scan_field.tap = virtex2_info->tap;
  84         scan_field.num_bits = num_words * 32;
  85         scan_field.out_value = values;
  86         scan_field.in_value = NULL;
  87         scan_field.in_check_value = NULL;
  88         scan_field.in_check_mask = NULL;
  89         scan_field.in_handler = NULL;
  90         scan_field.in_handler_priv = NULL;
  91
  92         for (i = 0; i < num_words; i++)
  93                 buf_set_u32(values + 4 * i, 0, 32, flip_u32(*words++, 32));
  94
  95         virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
  96
  97         jtag_add_dr_scan(1, &scan_field, TAP_DRPAUSE);
  98
  99         free(values);
 100
 101         return ERROR_OK;
 102 }
 103
 104 int virtex2_jtag_buf_to_u32(u8 *in_buf, void *priv, struct scan_field_s *field)
 105 {
 106         u32 *dest = priv;
 107         *dest = flip_u32(le_to_h_u32(in_buf), 32);
 108         return ERROR_OK;
 109 }
 110
 111 int virtex2_receive_32(struct pld_device_s *pld_device, int num_words, u32 *words)
 112 {
 113         virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
 114         scan_field_t scan_field;
 115
 116         scan_field.tap = virtex2_info->tap;
 117         scan_field.num_bits = 32;
 118         scan_field.out_value = NULL;
 119         scan_field.in_value = NULL;
 120         scan_field.in_check_value = NULL;
 121         scan_field.in_check_mask = NULL;
 122         scan_field.in_handler = virtex2_jtag_buf_to_u32; /* deprecated! invoke this from user code! */
 123
 124         virtex2_set_instr(virtex2_info->tap, 0x4); /* CFG_OUT */
 125
 126         while (num_words--)
 127         {
 128                 scan_field.in_handler_priv = words++;
 129                 jtag_add_dr_scan(1, &scan_field, TAP_DRPAUSE);
 130         }
 131
 132         return ERROR_OK;
 133 }
 134
 135 int virtex2_read_stat(struct pld_device_s *pld_device, u32 *status)
 136 {
 137         u32 data[5];
 138
 139         jtag_add_tlr();
 140
 141         data[0] = 0xaa995566; /* synch word */
 142         data[1] = 0x2800E001; /* Type 1, read, address 7, 1 word */
 143         data[2] = 0x20000000; /* NOOP (Type 1, read, address 0, 0 words */
 144         data[3] = 0x20000000; /* NOOP */
 145         data[4] = 0x20000000; /* NOOP */
 146         virtex2_send_32(pld_device, 5, data);
 147
 148         virtex2_receive_32(pld_device, 1, status);
 149
 150         jtag_execute_queue();
 151
 152         LOG_DEBUG("status: 0x%8.8x", *status);
 153
 154         return ERROR_OK;
 155 }
 156
 157 int virtex2_load(struct pld_device_s *pld_device, char *filename)
 158 {
 159         virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
 160         xilinx_bit_file_t bit_file;
 161         int retval;
 162         unsigned int i;
 163
 164         scan_field_t field;
 165
 166         field.tap = virtex2_info->tap;
 167
 168         field.in_value = NULL;
 169         field.in_check_value = NULL;
 170         field.in_check_mask = NULL;
 171         field.in_handler = NULL;
 172         field.in_handler_priv = NULL;
 173
 174         if ((retval = xilinx_read_bit_file(&bit_file, filename)) != ERROR_OK)
 175                 return retval;
 176
 177         jtag_add_end_state(TAP_IDLE);
 178         virtex2_set_instr(virtex2_info->tap, 0xb); /* JPROG_B */
 179         jtag_execute_queue();
 180         jtag_add_sleep(1000);
 181
 182         virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
 183         jtag_execute_queue();
 184
 185         for (i = 0; i < bit_file.length; i++)
 186                 bit_file.data[i] = flip_u32(bit_file.data[i], 8);
 187
 188         field.num_bits = bit_file.length * 8;
 189         field.out_value = bit_file.data;
 190
 191         jtag_add_dr_scan(1, &field, TAP_DRPAUSE);
 192         jtag_execute_queue();
 193
 194         jtag_add_tlr();
 195
 196         jtag_add_end_state(TAP_IDLE);
 197         virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
 198         jtag_add_runtest(13, TAP_IDLE);
 199         virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
 200         virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
 201         virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
 202         jtag_add_runtest(13, TAP_IDLE);
 203         virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
 204         jtag_execute_queue();
 205
 206         return ERROR_OK;
 207 }
 208
 209 int virtex2_handle_read_stat_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 210 {
 211         pld_device_t *device;
 212         virtex2_pld_device_t *virtex2_info;
 213         u32 status;
 214
 215         if (argc < 1)
 216         {
 217                 command_print(cmd_ctx, "usage: virtex2 read_stat <num>");
 218                 return ERROR_OK;
 219         }
 220
 221         device = get_pld_device_by_num(strtoul(args[0], NULL, 0));
 222         if (!device)
 223         {
 224                 command_print(cmd_ctx, "pld device '#%s' is out of bounds", args[0]);
 225                 return ERROR_OK;
 226         }
 227
 228         virtex2_info = device->driver_priv;
 229
 230         virtex2_read_stat(device, &status);
 231
 232         command_print(cmd_ctx, "virtex2 status register: 0x%8.8x", status);
 233
 234         return ERROR_OK;
 235 }
 236
 237 int virtex2_register_commands(struct command_context_s *cmd_ctx)
 238 {
 239         command_t *virtex2_cmd = register_command(cmd_ctx, NULL, "virtex2", NULL, COMMAND_ANY, "virtex2 specific commands");
 240
 241         register_command(cmd_ctx, virtex2_cmd, "read_stat", virtex2_handle_read_stat_command, COMMAND_EXEC,
 242                                          "read Virtex-II status register");
 243
 244         return ERROR_OK;
 245 }
 246
 247 int virtex2_pld_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct pld_device_s *pld_device)
 248 {
 249         jtag_tap_t *tap;
 250
 251         virtex2_pld_device_t *virtex2_info;
 252
 253         if (argc < 2)
 254         {
 255                 LOG_WARNING("incomplete pld device 'virtex2' configuration");
 256                 return ERROR_PLD_DEVICE_INVALID;
 257         }
 258
 259         tap = jtag_TapByString( args[1] );
 260         if( tap == NULL ){
 261                 command_print( cmd_ctx, "Tap: %s does not exist", args[1] );
 262                 return ERROR_OK;
 263         }
 264
 265         virtex2_info = malloc(sizeof(virtex2_pld_device_t));
 266         pld_device->driver_priv = virtex2_info;
 267         virtex2_info->tap = tap;
 268
 269         return ERROR_OK;
 270 }