src/pld/virtex2.c

   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(int chain_pos, u32 new_instr)
  47 {
  48         jtag_device_t *device = jtag_get_device(chain_pos);
  49
  50         if (buf_get_u32(device->cur_instr, 0, device->ir_length) != new_instr)
  51         {
  52                 scan_field_t field;
  53
  54                 field.device = chain_pos;
  55                 field.num_bits = device->ir_length;
  56                 field.out_value = calloc(CEIL(field.num_bits, 8), 1);
  57                 buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
  58                 field.out_mask = NULL;
  59                 field.in_value = NULL;
  60                 field.in_check_value = NULL;
  61                 field.in_check_mask = NULL;
  62                 field.in_handler = NULL;
  63                 field.in_handler_priv = NULL;
  64
  65                 jtag_add_ir_scan(1, &field, TAP_RTI);
  66
  67                 free(field.out_value);
  68         }
  69
  70         return ERROR_OK;
  71 }
  72
  73 int virtex2_send_32(struct pld_device_s *pld_device, int num_words, u32 *words)
  74 {
  75         virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
  76         scan_field_t scan_field;
  77         u8 *values;
  78         int i;
  79
  80         values = malloc(num_words * 4);
  81
  82         scan_field.device = virtex2_info->chain_pos;
  83         scan_field.num_bits = num_words * 32;
  84         scan_field.out_value = values;
  85         scan_field.out_mask = NULL;
  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->chain_pos, 0x5); /* CFG_IN */
  96
  97         jtag_add_dr_scan(1, &scan_field, TAP_PD);
  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.device = virtex2_info->chain_pos;
 117         scan_field.num_bits = 32;
 118         scan_field.out_value = NULL;
 119         scan_field.out_mask = NULL;
 120         scan_field.in_value = NULL;
 121         scan_field.in_check_value = NULL;
 122         scan_field.in_check_mask = NULL;
 123         scan_field.in_handler = virtex2_jtag_buf_to_u32;
 124
 125         virtex2_set_instr(virtex2_info->chain_pos, 0x4); /* CFG_OUT */
 126
 127         while (num_words--)
 128         {
 129                 scan_field.in_handler_priv = words++;
 130                 jtag_add_dr_scan(1, &scan_field, TAP_PD);
 131         }
 132
 133         return ERROR_OK;
 134 }
 135
 136 int virtex2_read_stat(struct pld_device_s *pld_device, u32 *status)
 137 {
 138         u32 data[5];
 139
 140         jtag_add_statemove(TAP_TLR);
 141
 142         data[0] = 0xaa995566; /* synch word */
 143         data[1] = 0x2800E001; /* Type 1, read, address 7, 1 word */
 144         data[2] = 0x20000000; /* NOOP (Type 1, read, address 0, 0 words */
 145         data[3] = 0x20000000; /* NOOP */
 146         data[4] = 0x20000000; /* NOOP */
 147         virtex2_send_32(pld_device, 5, data);
 148
 149         virtex2_receive_32(pld_device, 1, status);
 150
 151         jtag_execute_queue();
 152
 153         LOG_DEBUG("status: 0x%8.8x", *status);
 154
 155         return ERROR_OK;
 156 }
 157
 158 int virtex2_load(struct pld_device_s *pld_device, char *filename)
 159 {
 160         virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
 161         xilinx_bit_file_t bit_file;
 162         int retval;
 163         int i;
 164
 165         scan_field_t field;
 166
 167         field.device = virtex2_info->chain_pos;
 168         field.out_mask = NULL;
 169         field.in_value = NULL;
 170         field.in_check_value = NULL;
 171         field.in_check_mask = NULL;
 172         field.in_handler = NULL;
 173         field.in_handler_priv = NULL;
 174
 175         if ((retval = xilinx_read_bit_file(&bit_file, filename)) != ERROR_OK)
 176                 return retval;
 177
 178         jtag_add_end_state(TAP_RTI);
 179         virtex2_set_instr(virtex2_info->chain_pos, 0xb); /* JPROG_B */
 180         jtag_execute_queue();
 181         jtag_add_sleep(1000);
 182
 183         virtex2_set_instr(virtex2_info->chain_pos, 0x5); /* CFG_IN */
 184         jtag_execute_queue();
 185
 186         for (i = 0; i < bit_file.length; i++)
 187                 bit_file.data[i] = flip_u32(bit_file.data[i], 8);
 188
 189         field.num_bits = bit_file.length * 8;
 190         field.out_value = bit_file.data;
 191
 192         jtag_add_dr_scan(1, &field, TAP_PD);
 193         jtag_execute_queue();
 194
 195         jtag_add_statemove(TAP_TLR);
 196
 197         jtag_add_end_state(TAP_RTI);
 198         virtex2_set_instr(virtex2_info->chain_pos, 0xc); /* JSTART */
 199         jtag_add_runtest(13, TAP_RTI);
 200         virtex2_set_instr(virtex2_info->chain_pos, 0x3f); /* BYPASS */
 201         virtex2_set_instr(virtex2_info->chain_pos, 0x3f); /* BYPASS */
 202         virtex2_set_instr(virtex2_info->chain_pos, 0xc); /* JSTART */
 203         jtag_add_runtest(13, TAP_RTI);
 204         virtex2_set_instr(virtex2_info->chain_pos, 0x3f); /* BYPASS */
 205         jtag_execute_queue();
 206
 207         return ERROR_OK;
 208 }
 209
 210 int virtex2_handle_read_stat_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 211 {
 212         pld_device_t *device;
 213         virtex2_pld_device_t *virtex2_info;
 214         u32 status;
 215
 216         if (argc < 1)
 217         {
 218                 command_print(cmd_ctx, "usage: virtex2 read_stat <num>");
 219                 return ERROR_OK;
 220         }
 221
 222         device = get_pld_device_by_num(strtoul(args[0], NULL, 0));
 223         if (!device)
 224         {
 225                 command_print(cmd_ctx, "pld device '#%s' is out of bounds", args[0]);
 226                 return ERROR_OK;
 227         }
 228
 229         virtex2_info = device->driver_priv;
 230
 231         virtex2_read_stat(device, &status);
 232
 233         command_print(cmd_ctx, "virtex2 status register: 0x%8.8x", status);
 234
 235         return ERROR_OK;
 236 }
 237
 238 int virtex2_register_commands(struct command_context_s *cmd_ctx)
 239 {
 240         command_t *virtex2_cmd = register_command(cmd_ctx, NULL, "virtex2", NULL, COMMAND_ANY, "virtex2 specific commands");
 241
 242         register_command(cmd_ctx, virtex2_cmd, "read_stat", virtex2_handle_read_stat_command, COMMAND_EXEC,
 243                                          "read Virtex-II status register");
 244
 245         return ERROR_OK;
 246 }
 247
 248 int virtex2_pld_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct pld_device_s *pld_device)
 249 {
 250         virtex2_pld_device_t *virtex2_info;
 251
 252         if (argc < 2)
 253         {
 254                 LOG_WARNING("incomplete pld device 'virtex2' configuration");
 255                 return ERROR_PLD_DEVICE_INVALID;
 256         }
 257
 258         virtex2_info = malloc(sizeof(virtex2_pld_device_t));
 259         pld_device->driver_priv = virtex2_info;
 260
 261         virtex2_info->chain_pos = strtoul(args[1], NULL, 0);
 262
 263         return ERROR_OK;
 264 }