src/pld/virtex2.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 /***************************************************************************
   4  *   Copyright (C) 2006 by Dominic Rath                                    *
   5  *   Dominic.Rath@gmx.de                                                   *
   6  ***************************************************************************/
   7
   8 #ifdef HAVE_CONFIG_H
   9 #include "config.h"
  10 #endif
  11
  12 #include "virtex2.h"
  13 #include "xilinx_bit.h"
  14 #include "pld.h"
  15
  16 static const struct virtex2_command_set virtex2_default_commands = {
  17         .cfg_out   = 0x04,
  18         .cfg_in    = 0x05,
  19         .jprog_b   = 0x0b,
  20         .jstart    = 0x0c,
  21         .jshutdown = 0x0d,
  22         .bypass    = 0x3f,
  23         .user      = {0x02, 0x03},
  24         .num_user  = 2, /* virtex II has only 2 user instructions */
  25 };
  26
  27 static int virtex2_set_instr(struct jtag_tap *tap, uint64_t new_instr)
  28 {
  29         if (!tap)
  30                 return ERROR_FAIL;
  31
  32         if (buf_get_u64(tap->cur_instr, 0, tap->ir_length) != new_instr) {
  33                 struct scan_field field;
  34
  35                 field.num_bits = tap->ir_length;
  36                 void *t = calloc(DIV_ROUND_UP(field.num_bits, 8), 1);
  37                 if (!t) {
  38                         LOG_ERROR("Out of memory");
  39                         return ERROR_FAIL;
  40                 }
  41                 field.out_value = t;
  42                 buf_set_u64(t, 0, field.num_bits, new_instr);
  43                 field.in_value = NULL;
  44
  45                 jtag_add_ir_scan(tap, &field, TAP_IDLE);
  46
  47                 free(t);
  48         }
  49
  50         return ERROR_OK;
  51 }
  52
  53 static int virtex2_send_32(struct pld_device *pld_device,
  54         int num_words, uint32_t *words)
  55 {
  56         struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
  57         struct scan_field scan_field;
  58         uint8_t *values;
  59         int i;
  60
  61         values = malloc(num_words * 4);
  62         if (!values) {
  63                 LOG_ERROR("Out of memory");
  64                 return ERROR_FAIL;
  65         }
  66
  67         scan_field.num_bits = num_words * 32;
  68         scan_field.out_value = values;
  69         scan_field.in_value = NULL;
  70
  71         for (i = 0; i < num_words; i++)
  72                 buf_set_u32(values + 4 * i, 0, 32, flip_u32(*words++, 32));
  73
  74         int retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.cfg_in);
  75         if (retval != ERROR_OK) {
  76                 free(values);
  77                 return retval;
  78         }
  79
  80         jtag_add_dr_scan(virtex2_info->tap, 1, &scan_field, TAP_DRPAUSE);
  81
  82         free(values);
  83
  84         return ERROR_OK;
  85 }
  86
  87 static inline void virtexflip32(jtag_callback_data_t arg)
  88 {
  89         uint8_t *in = (uint8_t *)arg;
  90         *((uint32_t *)arg) = flip_u32(le_to_h_u32(in), 32);
  91 }
  92
  93 static int virtex2_receive_32(struct pld_device *pld_device,
  94         int num_words, uint32_t *words)
  95 {
  96         struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
  97         struct scan_field scan_field;
  98
  99         scan_field.num_bits = 32;
 100         scan_field.out_value = NULL;
 101         scan_field.in_value = NULL;
 102
 103         int retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.cfg_out);
 104         if (retval != ERROR_OK)
 105                 return retval;
 106
 107         while (num_words--) {
 108                 scan_field.in_value = (uint8_t *)words;
 109
 110                 jtag_add_dr_scan(virtex2_info->tap, 1, &scan_field, TAP_DRPAUSE);
 111
 112                 jtag_add_callback(virtexflip32, (jtag_callback_data_t)words);
 113
 114                 words++;
 115         }
 116
 117         return ERROR_OK;
 118 }
 119
 120 static int virtex2_read_stat(struct pld_device *pld_device, uint32_t *status)
 121 {
 122         uint32_t data[5];
 123
 124         jtag_add_tlr();
 125
 126         data[0] = 0xaa995566;   /* synch word */
 127         data[1] = 0x2800E001;   /* Type 1, read, address 7, 1 word */
 128         data[2] = 0x20000000;   /* NOOP (Type 1, read, address 0, 0 words */
 129         data[3] = 0x20000000;   /* NOOP */
 130         data[4] = 0x20000000;   /* NOOP */
 131         int retval = virtex2_send_32(pld_device, 5, data);
 132         if (retval != ERROR_OK)
 133                 return retval;
 134
 135         retval = virtex2_receive_32(pld_device, 1, status);
 136         if (retval != ERROR_OK)
 137                 return retval;
 138
 139         retval = jtag_execute_queue();
 140         if (retval == ERROR_OK)
 141                 LOG_DEBUG("status: 0x%8.8" PRIx32, *status);
 142
 143         return retval;
 144 }
 145
 146 static int virtex2_load_prepare(struct pld_device *pld_device)
 147 {
 148         struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
 149         int retval;
 150
 151         retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.jprog_b);
 152         if (retval != ERROR_OK)
 153                 return retval;
 154
 155         retval = jtag_execute_queue();
 156         if (retval != ERROR_OK)
 157                 return retval;
 158         jtag_add_sleep(1000);
 159
 160         retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.cfg_in);
 161         if (retval != ERROR_OK)
 162                 return retval;
 163
 164         return jtag_execute_queue();
 165 }
 166
 167 static int virtex2_load_cleanup(struct pld_device *pld_device)
 168 {
 169         struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
 170         int retval;
 171
 172         jtag_add_tlr();
 173
 174         if (!(virtex2_info->no_jstart)) {
 175                 retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.jstart);
 176                 if (retval != ERROR_OK)
 177                         return retval;
 178         }
 179         jtag_add_runtest(13, TAP_IDLE);
 180         retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.bypass);
 181         if (retval != ERROR_OK)
 182                 return retval;
 183         retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.bypass);
 184         if (retval != ERROR_OK)
 185                 return retval;
 186         if (!(virtex2_info->no_jstart)) {
 187                 retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.jstart);
 188                 if (retval != ERROR_OK)
 189                         return retval;
 190         }
 191         jtag_add_runtest(13, TAP_IDLE);
 192         retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.bypass);
 193         if (retval != ERROR_OK)
 194                 return retval;
 195
 196         return jtag_execute_queue();
 197 }
 198
 199 static int virtex2_load(struct pld_device *pld_device, const char *filename)
 200 {
 201         struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
 202         struct xilinx_bit_file bit_file;
 203         int retval;
 204         unsigned int i;
 205         struct scan_field field;
 206
 207         field.in_value = NULL;
 208
 209         retval = xilinx_read_bit_file(&bit_file, filename);
 210         if (retval != ERROR_OK)
 211                 return retval;
 212
 213         retval = virtex2_load_prepare(pld_device);
 214         if (retval != ERROR_OK) {
 215                 xilinx_free_bit_file(&bit_file);
 216                 return retval;
 217         }
 218
 219         for (i = 0; i < bit_file.length; i++)
 220                 bit_file.data[i] = flip_u32(bit_file.data[i], 8);
 221
 222         field.num_bits = bit_file.length * 8;
 223         field.out_value = bit_file.data;
 224
 225         jtag_add_dr_scan(virtex2_info->tap, 1, &field, TAP_DRPAUSE);
 226         retval = jtag_execute_queue();
 227         if (retval != ERROR_OK) {
 228                 xilinx_free_bit_file(&bit_file);
 229                 return retval;
 230         }
 231
 232         retval = virtex2_load_cleanup(pld_device);
 233
 234         xilinx_free_bit_file(&bit_file);
 235
 236         return retval;
 237 }
 238
 239 COMMAND_HANDLER(virtex2_handle_read_stat_command)
 240 {
 241         struct pld_device *device;
 242         uint32_t status;
 243
 244         if (CMD_ARGC < 1)
 245                 return ERROR_COMMAND_SYNTAX_ERROR;
 246
 247         device = get_pld_device_by_name_or_numstr(CMD_ARGV[0]);
 248         if (!device) {
 249                 command_print(CMD, "pld device '#%s' is out of bounds or unknown", CMD_ARGV[0]);
 250                 return ERROR_FAIL;
 251         }
 252
 253         int retval = virtex2_read_stat(device, &status);
 254         if (retval != ERROR_OK) {
 255                 command_print(CMD, "cannot read virtex2 status register");
 256                 return retval;
 257         }
 258
 259         command_print(CMD, "virtex2 status register: 0x%8.8" PRIx32, status);
 260
 261         return ERROR_OK;
 262 }
 263
 264 COMMAND_HANDLER(virtex2_handle_set_instuction_codes_command)
 265 {
 266         if (CMD_ARGC < 6 || CMD_ARGC > (6 + VIRTEX2_MAX_USER_INSTRUCTIONS))
 267                 return ERROR_COMMAND_SYNTAX_ERROR;
 268
 269         struct pld_device *device = get_pld_device_by_name(CMD_ARGV[0]);
 270         if (!device) {
 271                 command_print(CMD, "pld device '#%s' is unknown", CMD_ARGV[0]);
 272                 return ERROR_FAIL;
 273         }
 274
 275         struct virtex2_pld_device *virtex2_info = device->driver_priv;
 276         if (!virtex2_info)
 277                 return ERROR_FAIL;
 278
 279         struct virtex2_command_set instr_codes;
 280         COMMAND_PARSE_NUMBER(u64, CMD_ARGV[1], instr_codes.cfg_out);
 281         COMMAND_PARSE_NUMBER(u64, CMD_ARGV[2], instr_codes.cfg_in);
 282         COMMAND_PARSE_NUMBER(u64, CMD_ARGV[3], instr_codes.jprog_b);
 283         COMMAND_PARSE_NUMBER(u64, CMD_ARGV[4], instr_codes.jstart);
 284         COMMAND_PARSE_NUMBER(u64, CMD_ARGV[5], instr_codes.jshutdown);
 285         instr_codes.bypass = 0xffffffffffffffff;
 286
 287         unsigned int num_user = CMD_ARGC - 6;
 288         for (unsigned int i = 0; i < num_user; ++i)
 289                 COMMAND_PARSE_NUMBER(u64, CMD_ARGV[6 + i], instr_codes.user[i]);
 290         instr_codes.num_user = num_user;
 291
 292         virtex2_info->command_set = instr_codes;
 293         return ERROR_OK;
 294 }
 295
 296 COMMAND_HANDLER(virtex2_handle_set_user_codes_command)
 297 {
 298         if (CMD_ARGC < 2 || CMD_ARGC > (1 + VIRTEX2_MAX_USER_INSTRUCTIONS))
 299                 return ERROR_COMMAND_SYNTAX_ERROR;
 300
 301         struct pld_device *device = get_pld_device_by_name(CMD_ARGV[0]);
 302         if (!device) {
 303                 command_print(CMD, "pld device '#%s' is unknown", CMD_ARGV[0]);
 304                 return ERROR_FAIL;
 305         }
 306
 307         struct virtex2_pld_device *virtex2_info = device->driver_priv;
 308         if (!virtex2_info)
 309                 return ERROR_FAIL;
 310
 311         uint64_t user[VIRTEX2_MAX_USER_INSTRUCTIONS];
 312         unsigned int num_user = CMD_ARGC - 1;
 313         for (unsigned int i = 0; i < num_user; ++i)
 314                 COMMAND_PARSE_NUMBER(u64, CMD_ARGV[1 + i], user[i]);
 315         virtex2_info->command_set.num_user = num_user;
 316         memcpy(virtex2_info->command_set.user, user, num_user * sizeof(uint64_t));
 317         return ERROR_OK;
 318 }
 319
 320 PLD_CREATE_COMMAND_HANDLER(virtex2_pld_create_command)
 321 {
 322         if (CMD_ARGC < 4)
 323                 return ERROR_COMMAND_SYNTAX_ERROR;
 324
 325         if (strcmp(CMD_ARGV[2], "-chain-position") != 0)
 326                 return ERROR_COMMAND_SYNTAX_ERROR;
 327
 328         struct jtag_tap *tap = jtag_tap_by_string(CMD_ARGV[3]);
 329         if (!tap) {
 330                 command_print(CMD, "Tap: %s does not exist", CMD_ARGV[3]);
 331                 return ERROR_FAIL;
 332         }
 333
 334         struct virtex2_pld_device *virtex2_info = malloc(sizeof(struct virtex2_pld_device));
 335         if (!virtex2_info) {
 336                 LOG_ERROR("Out of memory");
 337                 return ERROR_FAIL;
 338         }
 339         virtex2_info->tap = tap;
 340         virtex2_info->command_set = virtex2_default_commands;
 341
 342         virtex2_info->no_jstart = 0;
 343         if (CMD_ARGC >= 5 && strcmp(CMD_ARGV[4], "-no_jstart") == 0)
 344                 virtex2_info->no_jstart = 1;
 345
 346         pld->driver_priv = virtex2_info;
 347
 348         return ERROR_OK;
 349 }
 350
 351 static const struct command_registration virtex2_exec_command_handlers[] = {
 352         {
 353                 .name = "read_stat",
 354                 .mode = COMMAND_EXEC,
 355                 .handler = virtex2_handle_read_stat_command,
 356                 .help = "read status register",
 357                 .usage = "pld_name",
 358         }, {
 359                 .name = "set_instr_codes",
 360                 .mode = COMMAND_EXEC,
 361                 .handler = virtex2_handle_set_instuction_codes_command,
 362                 .help = "set instructions codes used for loading the bitstream/refreshing/jtag-hub",
 363                 .usage = "pld_name cfg_out cfg_in jprogb jstart jshutdown"
 364                                  " [user1 [user2 [user3 [user4]]]]",
 365         }, {
 366                 .name = "set_user_codes",
 367                 .mode = COMMAND_EXEC,
 368                 .handler = virtex2_handle_set_user_codes_command,
 369                 .help = "set instructions codes used for jtag-hub",
 370                 .usage = "pld_name user1 [user2 [user3 [user4]]]",
 371         },
 372         COMMAND_REGISTRATION_DONE
 373 };
 374
 375 static const struct command_registration virtex2_command_handler[] = {
 376         {
 377                 .name = "virtex2",
 378                 .mode = COMMAND_ANY,
 379                 .help = "Virtex-II specific commands",
 380                 .usage = "",
 381                 .chain = virtex2_exec_command_handlers,
 382         },
 383         COMMAND_REGISTRATION_DONE
 384 };
 385
 386 struct pld_driver virtex2_pld = {
 387         .name = "virtex2",
 388         .commands = virtex2_command_handler,
 389         .pld_create_command = &virtex2_pld_create_command,
 390         .load = &virtex2_load,
 391 };