board/gdsys/405ep/iocon.c

   1 /*
   2  * (C) Copyright 2010
   3  * Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.de
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <command.h>
  10 #include <errno.h>
  11 #include <asm/processor.h>
  12 #include <asm/io.h>
  13 #include <asm/ppc4xx-gpio.h>
  14
  15 #include "405ep.h"
  16 #include <gdsys_fpga.h>
  17
  18 #include "../common/osd.h"
  19 #include "../common/mclink.h"
  20 #include "../common/phy.h"
  21
  22 #include <i2c.h>
  23 #include <pca953x.h>
  24 #include <pca9698.h>
  25
  26 #include <miiphy.h>
  27
  28 DECLARE_GLOBAL_DATA_PTR;
  29
  30 #define LATCH0_BASE (CONFIG_SYS_LATCH_BASE)
  31 #define LATCH1_BASE (CONFIG_SYS_LATCH_BASE + 0x100)
  32 #define LATCH2_BASE (CONFIG_SYS_LATCH_BASE + 0x200)
  33
  34 #define MAX_MUX_CHANNELS 2
  35
  36 enum {
  37         UNITTYPE_MAIN_SERVER = 0,
  38         UNITTYPE_MAIN_USER = 1,
  39         UNITTYPE_VIDEO_SERVER = 2,
  40         UNITTYPE_VIDEO_USER = 3,
  41 };
  42
  43 enum {
  44         HWVER_100 = 0,
  45         HWVER_104 = 1,
  46         HWVER_110 = 2,
  47         HWVER_120 = 3,
  48         HWVER_200 = 4,
  49         HWVER_210 = 5,
  50         HWVER_220 = 6,
  51         HWVER_230 = 7,
  52 };
  53
  54 enum {
  55         FPGA_HWVER_200 = 0,
  56         FPGA_HWVER_210 = 1,
  57 };
  58
  59 enum {
  60         COMPRESSION_NONE = 0,
  61         COMPRESSION_TYPE1_DELTA = 1,
  62         COMPRESSION_TYPE1_TYPE2_DELTA = 3,
  63 };
  64
  65 enum {
  66         AUDIO_NONE = 0,
  67         AUDIO_TX = 1,
  68         AUDIO_RX = 2,
  69         AUDIO_RXTX = 3,
  70 };
  71
  72 enum {
  73         SYSCLK_147456 = 0,
  74 };
  75
  76 enum {
  77         RAM_DDR2_32 = 0,
  78         RAM_DDR3_32 = 1,
  79 };
  80
  81 enum {
  82         CARRIER_SPEED_1G = 0,
  83         CARRIER_SPEED_2_5G = 1,
  84 };
  85
  86 enum {
  87         MCFPGA_DONE = 1 << 0,
  88         MCFPGA_INIT_N = 1 << 1,
  89         MCFPGA_PROGRAM_N = 1 << 2,
  90         MCFPGA_UPDATE_ENABLE_N = 1 << 3,
  91         MCFPGA_RESET_N = 1 << 4,
  92 };
  93
  94 enum {
  95         GPIO_MDC = 1 << 14,
  96         GPIO_MDIO = 1 << 15,
  97 };
  98
  99 unsigned int mclink_fpgacount;
 100 struct ihs_fpga *fpga_ptr[] = CONFIG_SYS_FPGA_PTR;
 101
 102 int fpga_set_reg(u32 fpga, u16 *reg, off_t regoff, u16 data)
 103 {
 104         int res;
 105
 106         switch (fpga) {
 107         case 0:
 108                 out_le16(reg, data);
 109                 break;
 110         default:
 111                 res = mclink_send(fpga - 1, regoff, data);
 112                 if (res < 0) {
 113                         printf("mclink_send reg %02lx data %04x returned %d\n",
 114                                regoff, data, res);
 115                         return res;
 116                 }
 117                 break;
 118         }
 119
 120         return 0;
 121 }
 122
 123 int fpga_get_reg(u32 fpga, u16 *reg, off_t regoff, u16 *data)
 124 {
 125         int res;
 126
 127         switch (fpga) {
 128         case 0:
 129                 *data = in_le16(reg);
 130                 break;
 131         default:
 132                 if (fpga > mclink_fpgacount)
 133                         return -EINVAL;
 134                 res = mclink_receive(fpga - 1, regoff, data);
 135                 if (res < 0) {
 136                         printf("mclink_receive reg %02lx returned %d\n",
 137                                regoff, res);
 138                         return res;
 139                 }
 140         }
 141
 142         return 0;
 143 }
 144
 145 /*
 146  * Check Board Identity:
 147  */
 148 int checkboard(void)
 149 {
 150         char *s = getenv("serial#");
 151
 152         puts("Board: ");
 153
 154         puts("IoCon");
 155
 156         if (s != NULL) {
 157                 puts(", serial# ");
 158                 puts(s);
 159         }
 160
 161         puts("\n");
 162
 163         return 0;
 164 }
 165
 166 static void print_fpga_info(unsigned int fpga, bool rgmii2_present)
 167 {
 168         u16 versions;
 169         u16 fpga_version;
 170         u16 fpga_features;
 171         unsigned unit_type;
 172         unsigned hardware_version;
 173         unsigned feature_compression;
 174         unsigned feature_osd;
 175         unsigned feature_audio;
 176         unsigned feature_sysclock;
 177         unsigned feature_ramconfig;
 178         unsigned feature_carrier_speed;
 179         unsigned feature_carriers;
 180         unsigned feature_video_channels;
 181
 182         int legacy = get_fpga_state(fpga) & FPGA_STATE_PLATFORM;
 183
 184         FPGA_GET_REG(fpga, versions, &versions);
 185         FPGA_GET_REG(fpga, fpga_version, &fpga_version);
 186         FPGA_GET_REG(fpga, fpga_features, &fpga_features);
 187
 188         unit_type = (versions & 0xf000) >> 12;
 189         feature_compression = (fpga_features & 0xe000) >> 13;
 190         feature_osd = fpga_features & (1<<11);
 191         feature_audio = (fpga_features & 0x0600) >> 9;
 192         feature_sysclock = (fpga_features & 0x0180) >> 7;
 193         feature_ramconfig = (fpga_features & 0x0060) >> 5;
 194         feature_carrier_speed = fpga_features & (1<<4);
 195         feature_carriers = (fpga_features & 0x000c) >> 2;
 196         feature_video_channels = fpga_features & 0x0003;
 197
 198         if (legacy)
 199                 printf("legacy ");
 200
 201         switch (unit_type) {
 202         case UNITTYPE_MAIN_USER:
 203                 printf("Mainchannel");
 204                 break;
 205
 206         case UNITTYPE_VIDEO_USER:
 207                 printf("Videochannel");
 208                 break;
 209
 210         default:
 211                 printf("UnitType %d(not supported)", unit_type);
 212                 break;
 213         }
 214
 215         if (unit_type == UNITTYPE_MAIN_USER) {
 216                 if (legacy)
 217                         hardware_version =
 218                                 (in_le16((void *)LATCH2_BASE)>>8) & 0x0f;
 219                 else
 220                         hardware_version =
 221                                   (!!pca9698_get_value(0x20, 24) << 0)
 222                                 | (!!pca9698_get_value(0x20, 25) << 1)
 223                                 | (!!pca9698_get_value(0x20, 26) << 2)
 224                                 | (!!pca9698_get_value(0x20, 27) << 3);
 225                 switch (hardware_version) {
 226                 case HWVER_100:
 227                         printf(" HW-Ver 1.00,");
 228                         break;
 229
 230                 case HWVER_104:
 231                         printf(" HW-Ver 1.04,");
 232                         break;
 233
 234                 case HWVER_110:
 235                         printf(" HW-Ver 1.10,");
 236                         break;
 237
 238                 case HWVER_120:
 239                         printf(" HW-Ver 1.20-1.21,");
 240                         break;
 241
 242                 case HWVER_200:
 243                         printf(" HW-Ver 2.00,");
 244                         break;
 245
 246                 case HWVER_210:
 247                         printf(" HW-Ver 2.10,");
 248                         break;
 249
 250                 case HWVER_220:
 251                         printf(" HW-Ver 2.20,");
 252                         break;
 253
 254                 case HWVER_230:
 255                         printf(" HW-Ver 2.30,");
 256                         break;
 257
 258                 default:
 259                         printf(" HW-Ver %d(not supported),",
 260                                hardware_version);
 261                         break;
 262                 }
 263                 if (rgmii2_present)
 264                         printf(" RGMII2,");
 265         }
 266
 267         if (unit_type == UNITTYPE_VIDEO_USER) {
 268                 hardware_version = versions & 0x000f;
 269                 switch (hardware_version) {
 270                 case FPGA_HWVER_200:
 271                         printf(" HW-Ver 2.00,");
 272                         break;
 273
 274                 case FPGA_HWVER_210:
 275                         printf(" HW-Ver 2.10,");
 276                         break;
 277
 278                 default:
 279                         printf(" HW-Ver %d(not supported),",
 280                                hardware_version);
 281                         break;
 282                 }
 283         }
 284
 285         printf(" FPGA V %d.%02d\n       features:",
 286                fpga_version / 100, fpga_version % 100);
 287
 288
 289         switch (feature_compression) {
 290         case COMPRESSION_NONE:
 291                 printf(" no compression");
 292                 break;
 293
 294         case COMPRESSION_TYPE1_DELTA:
 295                 printf(" type1-deltacompression");
 296                 break;
 297
 298         case COMPRESSION_TYPE1_TYPE2_DELTA:
 299                 printf(" type1-deltacompression, type2-inlinecompression");
 300                 break;
 301
 302         default:
 303                 printf(" compression %d(not supported)", feature_compression);
 304                 break;
 305         }
 306
 307         printf(", %sosd", feature_osd ? "" : "no ");
 308
 309         switch (feature_audio) {
 310         case AUDIO_NONE:
 311                 printf(", no audio");
 312                 break;
 313
 314         case AUDIO_TX:
 315                 printf(", audio tx");
 316                 break;
 317
 318         case AUDIO_RX:
 319                 printf(", audio rx");
 320                 break;
 321
 322         case AUDIO_RXTX:
 323                 printf(", audio rx+tx");
 324                 break;
 325
 326         default:
 327                 printf(", audio %d(not supported)", feature_audio);
 328                 break;
 329         }
 330
 331         puts(",\n       ");
 332
 333         switch (feature_sysclock) {
 334         case SYSCLK_147456:
 335                 printf("clock 147.456 MHz");
 336                 break;
 337
 338         default:
 339                 printf("clock %d(not supported)", feature_sysclock);
 340                 break;
 341         }
 342
 343         switch (feature_ramconfig) {
 344         case RAM_DDR2_32:
 345                 printf(", RAM 32 bit DDR2");
 346                 break;
 347
 348         case RAM_DDR3_32:
 349                 printf(", RAM 32 bit DDR3");
 350                 break;
 351
 352         default:
 353                 printf(", RAM %d(not supported)", feature_ramconfig);
 354                 break;
 355         }
 356
 357         printf(", %d carrier(s) %s", feature_carriers,
 358                feature_carrier_speed ? "2.5Gbit/s" : "1Gbit/s");
 359
 360         printf(", %d video channel(s)\n", feature_video_channels);
 361 }
 362
 363 int last_stage_init(void)
 364 {
 365         int slaves;
 366         unsigned int k;
 367         unsigned int mux_ch;
 368         unsigned char mclink_controllers[] = { 0x24, 0x25, 0x26 };
 369         int legacy = get_fpga_state(0) & FPGA_STATE_PLATFORM;
 370         u16 fpga_features;
 371         int feature_carrier_speed;
 372         bool ch0_rgmii2_present = false;
 373
 374         FPGA_GET_REG(0, fpga_features, &fpga_features);
 375         feature_carrier_speed = fpga_features & (1<<4);
 376
 377         if (!legacy) {
 378                 /* Turn on Parade DP501 */
 379                 pca9698_direction_output(0x20, 9, 1);
 380
 381                 ch0_rgmii2_present = !pca9698_get_value(0x20, 30);
 382         }
 383
 384         /* wait for FPGA done; then reset FPGA */
 385         for (k = 0; k < ARRAY_SIZE(mclink_controllers); ++k) {
 386                 unsigned int ctr = 0;
 387
 388                 if (i2c_probe(mclink_controllers[k]))
 389                         continue;
 390
 391                 while (!(pca953x_get_val(mclink_controllers[k])
 392                        & MCFPGA_DONE)) {
 393                         udelay(100000);
 394                         if (ctr++ > 5) {
 395                                 printf("no done for mclink_controller %d\n", k);
 396                                 break;
 397                         }
 398                 }
 399
 400                 pca953x_set_dir(mclink_controllers[k], MCFPGA_RESET_N, 0);
 401                 pca953x_set_val(mclink_controllers[k], MCFPGA_RESET_N, 0);
 402                 udelay(10);
 403                 pca953x_set_val(mclink_controllers[k], MCFPGA_RESET_N,
 404                                 MCFPGA_RESET_N);
 405         }
 406
 407         if (!legacy && (feature_carrier_speed == CARRIER_SPEED_1G)) {
 408                 int retval;
 409                 struct mii_dev *mdiodev = mdio_alloc();
 410                 if (!mdiodev)
 411                         return -ENOMEM;
 412                 strncpy(mdiodev->name, bb_miiphy_buses[0].name, MDIO_NAME_LEN);
 413                 mdiodev->read = bb_miiphy_read;
 414                 mdiodev->write = bb_miiphy_write;
 415
 416                 retval = mdio_register(mdiodev);
 417                 if (retval < 0)
 418                         return retval;
 419                 for (mux_ch = 0; mux_ch < MAX_MUX_CHANNELS; ++mux_ch) {
 420                         if ((mux_ch == 1) && !ch0_rgmii2_present)
 421                                 continue;
 422
 423                         setup_88e1518(bb_miiphy_buses[0].name, mux_ch);
 424                 }
 425         }
 426
 427         /* give slave-PLLs and Parade DP501 some time to be up and running */
 428         udelay(500000);
 429
 430         mclink_fpgacount = CONFIG_SYS_MCLINK_MAX;
 431         slaves = mclink_probe();
 432         mclink_fpgacount = 0;
 433
 434         print_fpga_info(0, ch0_rgmii2_present);
 435         osd_probe(0);
 436
 437         if (slaves <= 0)
 438                 return 0;
 439
 440         mclink_fpgacount = slaves;
 441
 442         for (k = 1; k <= slaves; ++k) {
 443                 FPGA_GET_REG(k, fpga_features, &fpga_features);
 444                 feature_carrier_speed = fpga_features & (1<<4);
 445
 446                 print_fpga_info(k, false);
 447                 osd_probe(k);
 448                 if (feature_carrier_speed == CARRIER_SPEED_1G) {
 449                         int retval;
 450                         struct mii_dev *mdiodev = mdio_alloc();
 451                         if (!mdiodev)
 452                                 return -ENOMEM;
 453                         strncpy(mdiodev->name, bb_miiphy_buses[k].name,
 454                                 MDIO_NAME_LEN);
 455                         mdiodev->read = bb_miiphy_read;
 456                         mdiodev->write = bb_miiphy_write;
 457
 458                         retval = mdio_register(mdiodev);
 459                         if (retval < 0)
 460                                 return retval;
 461                         setup_88e1518(bb_miiphy_buses[k].name, 0);
 462                 }
 463         }
 464
 465         return 0;
 466 }
 467
 468 /*
 469  * provide access to fpga gpios (for I2C bitbang)
 470  * (these may look all too simple but make iocon.h much more readable)
 471  */
 472 void fpga_gpio_set(unsigned int bus, int pin)
 473 {
 474         FPGA_SET_REG(bus, gpio.set, pin);
 475 }
 476
 477 void fpga_gpio_clear(unsigned int bus, int pin)
 478 {
 479         FPGA_SET_REG(bus, gpio.clear, pin);
 480 }
 481
 482 int fpga_gpio_get(unsigned int bus, int pin)
 483 {
 484         u16 val;
 485
 486         FPGA_GET_REG(bus, gpio.read, &val);
 487
 488         return val & pin;
 489 }
 490
 491 void gd405ep_init(void)
 492 {
 493         unsigned int k;
 494
 495         if (i2c_probe(0x20)) { /* i2c_probe returns 0 on success */
 496                 for (k = 0; k < CONFIG_SYS_FPGA_COUNT; ++k)
 497                         gd->arch.fpga_state[k] |= FPGA_STATE_PLATFORM;
 498         } else {
 499                 pca9698_direction_output(0x20, 4, 1);
 500         }
 501 }
 502
 503 void gd405ep_set_fpga_reset(unsigned state)
 504 {
 505         int legacy = get_fpga_state(0) & FPGA_STATE_PLATFORM;
 506
 507         if (legacy) {
 508                 if (state) {
 509                         out_le16((void *)LATCH0_BASE, CONFIG_SYS_LATCH0_RESET);
 510                         out_le16((void *)LATCH1_BASE, CONFIG_SYS_LATCH1_RESET);
 511                 } else {
 512                         out_le16((void *)LATCH0_BASE, CONFIG_SYS_LATCH0_BOOT);
 513                         out_le16((void *)LATCH1_BASE, CONFIG_SYS_LATCH1_BOOT);
 514                 }
 515         } else {
 516                 pca9698_set_value(0x20, 4, state ? 0 : 1);
 517         }
 518 }
 519
 520 void gd405ep_setup_hw(void)
 521 {
 522         /*
 523          * set "startup-finished"-gpios
 524          */
 525         gpio_write_bit(21, 0);
 526         gpio_write_bit(22, 1);
 527 }
 528
 529 int gd405ep_get_fpga_done(unsigned fpga)
 530 {
 531         int legacy = get_fpga_state(0) & FPGA_STATE_PLATFORM;
 532
 533         if (legacy)
 534                 return in_le16((void *)LATCH2_BASE)
 535                        & CONFIG_SYS_FPGA_DONE(fpga);
 536         else
 537                 return pca9698_get_value(0x20, 20);
 538 }
 539
 540 /*
 541  * FPGA MII bitbang implementation
 542  */
 543
 544 struct fpga_mii {
 545         unsigned fpga;
 546         int mdio;
 547 } fpga_mii[] = {
 548         { 0, 1},
 549         { 1, 1},
 550         { 2, 1},
 551         { 3, 1},
 552 };
 553
 554 static int mii_dummy_init(struct bb_miiphy_bus *bus)
 555 {
 556         return 0;
 557 }
 558
 559 static int mii_mdio_active(struct bb_miiphy_bus *bus)
 560 {
 561         struct fpga_mii *fpga_mii = bus->priv;
 562
 563         if (fpga_mii->mdio)
 564                 FPGA_SET_REG(fpga_mii->fpga, gpio.set, GPIO_MDIO);
 565         else
 566                 FPGA_SET_REG(fpga_mii->fpga, gpio.clear, GPIO_MDIO);
 567
 568         return 0;
 569 }
 570
 571 static int mii_mdio_tristate(struct bb_miiphy_bus *bus)
 572 {
 573         struct fpga_mii *fpga_mii = bus->priv;
 574
 575         FPGA_SET_REG(fpga_mii->fpga, gpio.set, GPIO_MDIO);
 576
 577         return 0;
 578 }
 579
 580 static int mii_set_mdio(struct bb_miiphy_bus *bus, int v)
 581 {
 582         struct fpga_mii *fpga_mii = bus->priv;
 583
 584         if (v)
 585                 FPGA_SET_REG(fpga_mii->fpga, gpio.set, GPIO_MDIO);
 586         else
 587                 FPGA_SET_REG(fpga_mii->fpga, gpio.clear, GPIO_MDIO);
 588
 589         fpga_mii->mdio = v;
 590
 591         return 0;
 592 }
 593
 594 static int mii_get_mdio(struct bb_miiphy_bus *bus, int *v)
 595 {
 596         u16 gpio;
 597         struct fpga_mii *fpga_mii = bus->priv;
 598
 599         FPGA_GET_REG(fpga_mii->fpga, gpio.read, &gpio);
 600
 601         *v = ((gpio & GPIO_MDIO) != 0);
 602
 603         return 0;
 604 }
 605
 606 static int mii_set_mdc(struct bb_miiphy_bus *bus, int v)
 607 {
 608         struct fpga_mii *fpga_mii = bus->priv;
 609
 610         if (v)
 611                 FPGA_SET_REG(fpga_mii->fpga, gpio.set, GPIO_MDC);
 612         else
 613                 FPGA_SET_REG(fpga_mii->fpga, gpio.clear, GPIO_MDC);
 614
 615         return 0;
 616 }
 617
 618 static int mii_delay(struct bb_miiphy_bus *bus)
 619 {
 620         udelay(1);
 621
 622         return 0;
 623 }
 624
 625 struct bb_miiphy_bus bb_miiphy_buses[] = {
 626         {
 627                 .name = "board0",
 628                 .init = mii_dummy_init,
 629                 .mdio_active = mii_mdio_active,
 630                 .mdio_tristate = mii_mdio_tristate,
 631                 .set_mdio = mii_set_mdio,
 632                 .get_mdio = mii_get_mdio,
 633                 .set_mdc = mii_set_mdc,
 634                 .delay = mii_delay,
 635                 .priv = &fpga_mii[0],
 636         },
 637         {
 638                 .name = "board1",
 639                 .init = mii_dummy_init,
 640                 .mdio_active = mii_mdio_active,
 641                 .mdio_tristate = mii_mdio_tristate,
 642                 .set_mdio = mii_set_mdio,
 643                 .get_mdio = mii_get_mdio,
 644                 .set_mdc = mii_set_mdc,
 645                 .delay = mii_delay,
 646                 .priv = &fpga_mii[1],
 647         },
 648         {
 649                 .name = "board2",
 650                 .init = mii_dummy_init,
 651                 .mdio_active = mii_mdio_active,
 652                 .mdio_tristate = mii_mdio_tristate,
 653                 .set_mdio = mii_set_mdio,
 654                 .get_mdio = mii_get_mdio,
 655                 .set_mdc = mii_set_mdc,
 656                 .delay = mii_delay,
 657                 .priv = &fpga_mii[2],
 658         },
 659         {
 660                 .name = "board3",
 661                 .init = mii_dummy_init,
 662                 .mdio_active = mii_mdio_active,
 663                 .mdio_tristate = mii_mdio_tristate,
 664                 .set_mdio = mii_set_mdio,
 665                 .get_mdio = mii_get_mdio,
 666                 .set_mdc = mii_set_mdc,
 667                 .delay = mii_delay,
 668                 .priv = &fpga_mii[3],
 669         },
 670 };
 671
 672 int bb_miiphy_buses_num = sizeof(bb_miiphy_buses) /
 673                           sizeof(bb_miiphy_buses[0]);