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