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