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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(int chain_pos, u32 new_instr)
  47 {
  48         jtag_device_t *device = jtag_get_device(chain_pos);
  49         if (device==NULL)
  50                 return ERROR_FAIL;
  51
  52         if (buf_get_u32(device->cur_instr, 0, device->ir_length) != new_instr)
  53         {
  54                 scan_field_t field;
  55
  56                 field.device = chain_pos;
  57                 field.num_bits = device->ir_length;
  58                 field.out_value = calloc(CEIL(field.num_bits, 8), 1);
  59                 buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
  60                 field.out_mask = NULL;
  61                 field.in_value = NULL;
  62                 field.in_check_value = NULL;
  63                 field.in_check_mask = NULL;
  64                 field.in_handler = NULL;
  65                 field.in_handler_priv = NULL;
  66
  67                 jtag_add_ir_scan(1, &field, TAP_RTI);
  68
  69                 free(field.out_value);
  70         }
  71
  72         return ERROR_OK;
  73 }
  74
  75 int virtex2_send_32(struct pld_device_s *pld_device, int num_words, u32 *words)
  76 {
  77         virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
  78         scan_field_t scan_field;
  79         u8 *values;
  80         int i;
  81
  82         values = malloc(num_words * 4);
  83
  84         scan_field.device = virtex2_info->chain_pos;
  85         scan_field.num_bits = num_words * 32;
  86         scan_field.out_value = values;
  87         scan_field.out_mask = NULL;
  88         scan_field.in_value = NULL;
  89         scan_field.in_check_value = NULL;
  90         scan_field.in_check_mask = NULL;
  91         scan_field.in_handler = NULL;
  92         scan_field.in_handler_priv = NULL;
  93
  94         for (i = 0; i < num_words; i++)
  95                 buf_set_u32(values + 4 * i, 0, 32, flip_u32(*words++, 32));
  96
  97         virtex2_set_instr(virtex2_info->chain_pos, 0x5); /* CFG_IN */
  98
  99         jtag_add_dr_scan(1, &scan_field, TAP_PD);
 100
 101         free(values);
 102
 103         return ERROR_OK;
 104 }
 105
 106 int virtex2_jtag_buf_to_u32(u8 *in_buf, void *priv, struct scan_field_s *field)
 107 {
 108         u32 *dest = priv;
 109         *dest = flip_u32(le_to_h_u32(in_buf), 32);
 110         return ERROR_OK;
 111 }
 112
 113 int virtex2_receive_32(struct pld_device_s *pld_device, int num_words, u32 *words)
 114 {
 115         virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
 116         scan_field_t scan_field;
 117
 118         scan_field.device = virtex2_info->chain_pos;
 119         scan_field.num_bits = 32;
 120         scan_field.out_value = NULL;
 121         scan_field.out_mask = NULL;
 122         scan_field.in_value = NULL;
 123         scan_field.in_check_value = NULL;
 124         scan_field.in_check_mask = NULL;
 125         scan_field.in_handler = virtex2_jtag_buf_to_u32;
 126
 127         virtex2_set_instr(virtex2_info->chain_pos, 0x4); /* CFG_OUT */
 128
 129         while (num_words--)
 130         {
 131                 scan_field.in_handler_priv = words++;
 132                 jtag_add_dr_scan(1, &scan_field, TAP_PD);
 133         }
 134
 135         return ERROR_OK;
 136 }
 137
 138 int virtex2_read_stat(struct pld_device_s *pld_device, u32 *status)
 139 {
 140         u32 data[5];
 141
 142         jtag_add_tlr();
 143
 144         data[0] = 0xaa995566; /* synch word */
 145         data[1] = 0x2800E001; /* Type 1, read, address 7, 1 word */
 146         data[2] = 0x20000000; /* NOOP (Type 1, read, address 0, 0 words */
 147         data[3] = 0x20000000; /* NOOP */
 148         data[4] = 0x20000000; /* NOOP */
 149         virtex2_send_32(pld_device, 5, data);
 150
 151         virtex2_receive_32(pld_device, 1, status);
 152
 153         jtag_execute_queue();
 154
 155         LOG_DEBUG("status: 0x%8.8x", *status);
 156
 157         return ERROR_OK;
 158 }
 159
 160 int virtex2_load(struct pld_device_s *pld_device, char *filename)
 161 {
 162         virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
 163         xilinx_bit_file_t bit_file;
 164         int retval;
 165         int i;
 166
 167         scan_field_t field;
 168
 169         field.device = virtex2_info->chain_pos;
 170         field.out_mask = NULL;
 171         field.in_value = NULL;
 172         field.in_check_value = NULL;
 173         field.in_check_mask = NULL;
 174         field.in_handler = NULL;
 175         field.in_handler_priv = NULL;
 176
 177         if ((retval = xilinx_read_bit_file(&bit_file, filename)) != ERROR_OK)
 178                 return retval;
 179
 180         jtag_add_end_state(TAP_RTI);
 181         virtex2_set_instr(virtex2_info->chain_pos, 0xb); /* JPROG_B */
 182         jtag_execute_queue();
 183         jtag_add_sleep(1000);
 184
 185         virtex2_set_instr(virtex2_info->chain_pos, 0x5); /* CFG_IN */
 186         jtag_execute_queue();
 187
 188         for (i = 0; i < bit_file.length; i++)
 189                 bit_file.data[i] = flip_u32(bit_file.data[i], 8);
 190
 191         field.num_bits = bit_file.length * 8;
 192         field.out_value = bit_file.data;
 193
 194         jtag_add_dr_scan(1, &field, TAP_PD);
 195         jtag_execute_queue();
 196
 197         jtag_add_tlr();
 198
 199         jtag_add_end_state(TAP_RTI);
 200         virtex2_set_instr(virtex2_info->chain_pos, 0xc); /* JSTART */
 201         jtag_add_runtest(13, TAP_RTI);
 202         virtex2_set_instr(virtex2_info->chain_pos, 0x3f); /* BYPASS */
 203         virtex2_set_instr(virtex2_info->chain_pos, 0x3f); /* BYPASS */
 204         virtex2_set_instr(virtex2_info->chain_pos, 0xc); /* JSTART */
 205         jtag_add_runtest(13, TAP_RTI);
 206         virtex2_set_instr(virtex2_info->chain_pos, 0x3f); /* BYPASS */
 207         jtag_execute_queue();
 208
 209         return ERROR_OK;
 210 }
 211
 212 int virtex2_handle_read_stat_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 213 {
 214         pld_device_t *device;
 215         virtex2_pld_device_t *virtex2_info;
 216         u32 status;
 217
 218         if (argc < 1)
 219         {
 220                 command_print(cmd_ctx, "usage: virtex2 read_stat <num>");
 221                 return ERROR_OK;
 222         }
 223
 224         device = get_pld_device_by_num(strtoul(args[0], NULL, 0));
 225         if (!device)
 226         {
 227                 command_print(cmd_ctx, "pld device '#%s' is out of bounds", args[0]);
 228                 return ERROR_OK;
 229         }
 230
 231         virtex2_info = device->driver_priv;
 232
 233         virtex2_read_stat(device, &status);
 234
 235         command_print(cmd_ctx, "virtex2 status register: 0x%8.8x", status);
 236
 237         return ERROR_OK;
 238 }
 239
 240 int virtex2_register_commands(struct command_context_s *cmd_ctx)
 241 {
 242         command_t *virtex2_cmd = register_command(cmd_ctx, NULL, "virtex2", NULL, COMMAND_ANY, "virtex2 specific commands");
 243
 244         register_command(cmd_ctx, virtex2_cmd, "read_stat", virtex2_handle_read_stat_command, COMMAND_EXEC,
 245                                          "read Virtex-II status register");
 246
 247         return ERROR_OK;
 248 }
 249
 250 int virtex2_pld_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct pld_device_s *pld_device)
 251 {
 252         virtex2_pld_device_t *virtex2_info;
 253
 254         if (argc < 2)
 255         {
 256                 LOG_WARNING("incomplete pld device 'virtex2' configuration");
 257                 return ERROR_PLD_DEVICE_INVALID;
 258         }
 259
 260         virtex2_info = malloc(sizeof(virtex2_pld_device_t));
 261         pld_device->driver_priv = virtex2_info;
 262
 263         virtex2_info->chain_pos = strtoul(args[1], NULL, 0);
 264
 265         return ERROR_OK;
 266 }