arch/mips/cavium-octeon/executive/octeon-model.c

   1 /***********************license start***************
   2  * Author: Cavium Networks
   3  *
   4  * Contact: support@caviumnetworks.com
   5  * This file is part of the OCTEON SDK
   6  *
   7  * Copyright (c) 2003-2010 Cavium Networks
   8  *
   9  * This file is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License, Version 2, as
  11  * published by the Free Software Foundation.
  12  *
  13  * This file is distributed in the hope that it will be useful, but
  14  * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
  15  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
  16  * NONINFRINGEMENT.  See the GNU General Public License for more
  17  * details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this file; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  22  * or visit http://www.gnu.org/licenses/.
  23  *
  24  * This file may also be available under a different license from Cavium.
  25  * Contact Cavium Networks for more information
  26  ***********************license end**************************************/
  27
  28 #include <asm/octeon/octeon.h>
  29
  30 /**
  31  * Read a byte of fuse data
  32  * @byte_addr:   address to read
  33  *
  34  * Returns fuse value: 0 or 1
  35  */
  36 static uint8_t __init cvmx_fuse_read_byte(int byte_addr)
  37 {
  38         union cvmx_mio_fus_rcmd read_cmd;
  39
  40         read_cmd.u64 = 0;
  41         read_cmd.s.addr = byte_addr;
  42         read_cmd.s.pend = 1;
  43         cvmx_write_csr(CVMX_MIO_FUS_RCMD, read_cmd.u64);
  44         while ((read_cmd.u64 = cvmx_read_csr(CVMX_MIO_FUS_RCMD))
  45                && read_cmd.s.pend)
  46                 ;
  47         return read_cmd.s.dat;
  48 }
  49
  50 /*
  51  * Version of octeon_model_get_string() that takes buffer as argument,
  52  * as running early in u-boot static/global variables don't work when
  53  * running from flash.
  54  */
  55 static const char *__init octeon_model_get_string_buffer(uint32_t chip_id,
  56                                                          char *buffer)
  57 {
  58         const char *family;
  59         const char *core_model;
  60         char pass[4];
  61         int clock_mhz;
  62         const char *suffix;
  63         union cvmx_l2d_fus3 fus3;
  64         int num_cores;
  65         union cvmx_mio_fus_dat2 fus_dat2;
  66         union cvmx_mio_fus_dat3 fus_dat3;
  67         char fuse_model[10];
  68         uint32_t fuse_data = 0;
  69
  70         fus3.u64 = 0;
  71         if (!OCTEON_IS_MODEL(OCTEON_CN6XXX))
  72                 fus3.u64 = cvmx_read_csr(CVMX_L2D_FUS3);
  73         fus_dat2.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT2);
  74         fus_dat3.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT3);
  75         num_cores = cvmx_pop(cvmx_read_csr(CVMX_CIU_FUSE));
  76
  77         /* Make sure the non existent devices look disabled */
  78         switch ((chip_id >> 8) & 0xff) {
  79         case 6:         /* CN50XX */
  80         case 2:         /* CN30XX */
  81                 fus_dat3.s.nodfa_dte = 1;
  82                 fus_dat3.s.nozip = 1;
  83                 break;
  84         case 4:         /* CN57XX or CN56XX */
  85                 fus_dat3.s.nodfa_dte = 1;
  86                 break;
  87         default:
  88                 break;
  89         }
  90
  91         /* Make a guess at the suffix */
  92         /* NSP = everything */
  93         /* EXP = No crypto */
  94         /* SCP = No DFA, No zip */
  95         /* CP = No DFA, No crypto, No zip */
  96         if (fus_dat3.s.nodfa_dte) {
  97                 if (fus_dat2.s.nocrypto)
  98                         suffix = "CP";
  99                 else
 100                         suffix = "SCP";
 101         } else if (fus_dat2.s.nocrypto)
 102                 suffix = "EXP";
 103         else
 104                 suffix = "NSP";
 105
 106         /*
 107          * Assume pass number is encoded using <5:3><2:0>. Exceptions
 108          * will be fixed later.
 109          */
 110         sprintf(pass, "%d.%d", (int)((chip_id >> 3) & 7) + 1, (int)chip_id & 7);
 111
 112         /*
 113          * Use the number of cores to determine the last 2 digits of
 114          * the model number. There are some exceptions that are fixed
 115          * later.
 116          */
 117         switch (num_cores) {
 118         case 32:
 119                 core_model = "80";
 120                 break;
 121         case 24:
 122                 core_model = "70";
 123                 break;
 124         case 16:
 125                 core_model = "60";
 126                 break;
 127         case 15:
 128                 core_model = "58";
 129                 break;
 130         case 14:
 131                 core_model = "55";
 132                 break;
 133         case 13:
 134                 core_model = "52";
 135                 break;
 136         case 12:
 137                 core_model = "50";
 138                 break;
 139         case 11:
 140                 core_model = "48";
 141                 break;
 142         case 10:
 143                 core_model = "45";
 144                 break;
 145         case 9:
 146                 core_model = "42";
 147                 break;
 148         case 8:
 149                 core_model = "40";
 150                 break;
 151         case 7:
 152                 core_model = "38";
 153                 break;
 154         case 6:
 155                 core_model = "34";
 156                 break;
 157         case 5:
 158                 core_model = "32";
 159                 break;
 160         case 4:
 161                 core_model = "30";
 162                 break;
 163         case 3:
 164                 core_model = "25";
 165                 break;
 166         case 2:
 167                 core_model = "20";
 168                 break;
 169         case 1:
 170                 core_model = "10";
 171                 break;
 172         default:
 173                 core_model = "XX";
 174                 break;
 175         }
 176
 177         /* Now figure out the family, the first two digits */
 178         switch ((chip_id >> 8) & 0xff) {
 179         case 0:         /* CN38XX, CN37XX or CN36XX */
 180                 if (fus3.cn38xx.crip_512k) {
 181                         /*
 182                          * For some unknown reason, the 16 core one is
 183                          * called 37 instead of 36.
 184                          */
 185                         if (num_cores >= 16)
 186                                 family = "37";
 187                         else
 188                                 family = "36";
 189                 } else
 190                         family = "38";
 191                 /*
 192                  * This series of chips didn't follow the standard
 193                  * pass numbering.
 194                  */
 195                 switch (chip_id & 0xf) {
 196                 case 0:
 197                         strcpy(pass, "1.X");
 198                         break;
 199                 case 1:
 200                         strcpy(pass, "2.X");
 201                         break;
 202                 case 3:
 203                         strcpy(pass, "3.X");
 204                         break;
 205                 default:
 206                         strcpy(pass, "X.X");
 207                         break;
 208                 }
 209                 break;
 210         case 1:         /* CN31XX or CN3020 */
 211                 if ((chip_id & 0x10) || fus3.cn31xx.crip_128k)
 212                         family = "30";
 213                 else
 214                         family = "31";
 215                 /*
 216                  * This series of chips didn't follow the standard
 217                  * pass numbering.
 218                  */
 219                 switch (chip_id & 0xf) {
 220                 case 0:
 221                         strcpy(pass, "1.0");
 222                         break;
 223                 case 2:
 224                         strcpy(pass, "1.1");
 225                         break;
 226                 default:
 227                         strcpy(pass, "X.X");
 228                         break;
 229                 }
 230                 break;
 231         case 2:         /* CN3010 or CN3005 */
 232                 family = "30";
 233                 /* A chip with half cache is an 05 */
 234                 if (fus3.cn30xx.crip_64k)
 235                         core_model = "05";
 236                 /*
 237                  * This series of chips didn't follow the standard
 238                  * pass numbering.
 239                  */
 240                 switch (chip_id & 0xf) {
 241                 case 0:
 242                         strcpy(pass, "1.0");
 243                         break;
 244                 case 2:
 245                         strcpy(pass, "1.1");
 246                         break;
 247                 default:
 248                         strcpy(pass, "X.X");
 249                         break;
 250                 }
 251                 break;
 252         case 3:         /* CN58XX */
 253                 family = "58";
 254                 /* Special case. 4 core, half cache (CP with half cache) */
 255                 if ((num_cores == 4) && fus3.cn58xx.crip_1024k && !strncmp(suffix, "CP", 2))
 256                         core_model = "29";
 257
 258                 /* Pass 1 uses different encodings for pass numbers */
 259                 if ((chip_id & 0xFF) < 0x8) {
 260                         switch (chip_id & 0x3) {
 261                         case 0:
 262                                 strcpy(pass, "1.0");
 263                                 break;
 264                         case 1:
 265                                 strcpy(pass, "1.1");
 266                                 break;
 267                         case 3:
 268                                 strcpy(pass, "1.2");
 269                                 break;
 270                         default:
 271                                 strcpy(pass, "1.X");
 272                                 break;
 273                         }
 274                 }
 275                 break;
 276         case 4:         /* CN57XX, CN56XX, CN55XX, CN54XX */
 277                 if (fus_dat2.cn56xx.raid_en) {
 278                         if (fus3.cn56xx.crip_1024k)
 279                                 family = "55";
 280                         else
 281                                 family = "57";
 282                         if (fus_dat2.cn56xx.nocrypto)
 283                                 suffix = "SP";
 284                         else
 285                                 suffix = "SSP";
 286                 } else {
 287                         if (fus_dat2.cn56xx.nocrypto)
 288                                 suffix = "CP";
 289                         else {
 290                                 suffix = "NSP";
 291                                 if (fus_dat3.s.nozip)
 292                                         suffix = "SCP";
 293
 294                                 if (fus_dat3.s.bar2_en)
 295                                         suffix = "NSPB2";
 296                         }
 297                         if (fus3.cn56xx.crip_1024k)
 298                                 family = "54";
 299                         else
 300                                 family = "56";
 301                 }
 302                 break;
 303         case 6:         /* CN50XX */
 304                 family = "50";
 305                 break;
 306         case 7:         /* CN52XX */
 307                 if (fus3.cn52xx.crip_256k)
 308                         family = "51";
 309                 else
 310                         family = "52";
 311                 break;
 312         case 0x93:              /* CN61XX */
 313                 family = "61";
 314                 if (fus_dat2.cn61xx.nocrypto && fus_dat2.cn61xx.dorm_crypto)
 315                         suffix = "AP";
 316                 if (fus_dat2.cn61xx.nocrypto)
 317                         suffix = "CP";
 318                 else if (fus_dat2.cn61xx.dorm_crypto)
 319                         suffix = "DAP";
 320                 else if (fus_dat3.cn61xx.nozip)
 321                         suffix = "SCP";
 322                 break;
 323         case 0x90:              /* CN63XX */
 324                 family = "63";
 325                 if (fus_dat3.s.l2c_crip == 2)
 326                         family = "62";
 327                 if (num_cores == 6)     /* Other core counts match generic */
 328                         core_model = "35";
 329                 if (fus_dat2.cn63xx.nocrypto)
 330                         suffix = "CP";
 331                 else if (fus_dat2.cn63xx.dorm_crypto)
 332                         suffix = "DAP";
 333                 else if (fus_dat3.cn63xx.nozip)
 334                         suffix = "SCP";
 335                 else
 336                         suffix = "AAP";
 337                 break;
 338         case 0x92:              /* CN66XX */
 339                 family = "66";
 340                 if (num_cores == 6)     /* Other core counts match generic */
 341                         core_model = "35";
 342                 if (fus_dat2.cn66xx.nocrypto && fus_dat2.cn66xx.dorm_crypto)
 343                         suffix = "AP";
 344                 if (fus_dat2.cn66xx.nocrypto)
 345                         suffix = "CP";
 346                 else if (fus_dat2.cn66xx.dorm_crypto)
 347                         suffix = "DAP";
 348                 else if (fus_dat3.cn66xx.nozip)
 349                         suffix = "SCP";
 350                 else
 351                         suffix = "AAP";
 352                 break;
 353         case 0x91:              /* CN68XX */
 354                 family = "68";
 355                 if (fus_dat2.cn68xx.nocrypto && fus_dat3.cn68xx.nozip)
 356                         suffix = "CP";
 357                 else if (fus_dat2.cn68xx.dorm_crypto)
 358                         suffix = "DAP";
 359                 else if (fus_dat3.cn68xx.nozip)
 360                         suffix = "SCP";
 361                 else if (fus_dat2.cn68xx.nocrypto)
 362                         suffix = "SP";
 363                 else
 364                         suffix = "AAP";
 365                 break;
 366         default:
 367                 family = "XX";
 368                 core_model = "XX";
 369                 strcpy(pass, "X.X");
 370                 suffix = "XXX";
 371                 break;
 372         }
 373
 374         clock_mhz = octeon_get_clock_rate() / 1000000;
 375         if (family[0] != '3') {
 376                 int fuse_base = 384 / 8;
 377                 if (family[0] == '6')
 378                         fuse_base = 832 / 8;
 379
 380                 /* Check for model in fuses, overrides normal decode */
 381                 /* This is _not_ valid for Octeon CN3XXX models */
 382                 fuse_data |= cvmx_fuse_read_byte(fuse_base + 3);
 383                 fuse_data = fuse_data << 8;
 384                 fuse_data |= cvmx_fuse_read_byte(fuse_base + 2);
 385                 fuse_data = fuse_data << 8;
 386                 fuse_data |= cvmx_fuse_read_byte(fuse_base + 1);
 387                 fuse_data = fuse_data << 8;
 388                 fuse_data |= cvmx_fuse_read_byte(fuse_base);
 389                 if (fuse_data & 0x7ffff) {
 390                         int model = fuse_data & 0x3fff;
 391                         int suffix = (fuse_data >> 14) & 0x1f;
 392                         if (suffix && model) {
 393                                 /* Have both number and suffix in fuses, so both */
 394                                 sprintf(fuse_model, "%d%c", model, 'A' + suffix - 1);
 395                                 core_model = "";
 396                                 family = fuse_model;
 397                         } else if (suffix && !model) {
 398                                 /* Only have suffix, so add suffix to 'normal' model number */
 399                                 sprintf(fuse_model, "%s%c", core_model, 'A' + suffix - 1);
 400                                 core_model = fuse_model;
 401                         } else {
 402                                 /* Don't have suffix, so just use model from fuses */
 403                                 sprintf(fuse_model, "%d", model);
 404                                 core_model = "";
 405                                 family = fuse_model;
 406                         }
 407                 }
 408         }
 409         sprintf(buffer, "CN%s%sp%s-%d-%s", family, core_model, pass, clock_mhz, suffix);
 410         return buffer;
 411 }
 412
 413 /**
 414  * Given the chip processor ID from COP0, this function returns a
 415  * string representing the chip model number. The string is of the
 416  * form CNXXXXpX.X-FREQ-SUFFIX.
 417  * - XXXX = The chip model number
 418  * - X.X = Chip pass number
 419  * - FREQ = Current frequency in Mhz
 420  * - SUFFIX = NSP, EXP, SCP, SSP, or CP
 421  *
 422  * @chip_id: Chip ID
 423  *
 424  * Returns Model string
 425  */
 426 const char *__init octeon_model_get_string(uint32_t chip_id)
 427 {
 428         static char buffer[32];
 429         return octeon_model_get_string_buffer(chip_id, buffer);
 430 }