uboot/board/gdsys/mpc8308/hrcon.c
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   1/*
   2 * (C) Copyright 2014
   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 <hwconfig.h>
  10#include <i2c.h>
  11#include <spi.h>
  12#include <libfdt.h>
  13#include <fdt_support.h>
  14#include <pci.h>
  15#include <mpc83xx.h>
  16#include <fsl_esdhc.h>
  17#include <asm/io.h>
  18#include <asm/fsl_serdes.h>
  19#include <asm/fsl_mpc83xx_serdes.h>
  20
  21#include "mpc8308.h"
  22
  23#include <gdsys_fpga.h>
  24
  25#include "../common/ioep-fpga.h"
  26#include "../common/osd.h"
  27#include "../common/mclink.h"
  28#include "../common/phy.h"
  29#include "../common/fanctrl.h"
  30
  31#include <pca953x.h>
  32#include <pca9698.h>
  33
  34#include <miiphy.h>
  35
  36DECLARE_GLOBAL_DATA_PTR;
  37
  38#define MAX_MUX_CHANNELS 2
  39
  40enum {
  41        MCFPGA_DONE = 1 << 0,
  42        MCFPGA_INIT_N = 1 << 1,
  43        MCFPGA_PROGRAM_N = 1 << 2,
  44        MCFPGA_UPDATE_ENABLE_N = 1 << 3,
  45        MCFPGA_RESET_N = 1 << 4,
  46};
  47
  48enum {
  49        GPIO_MDC = 1 << 14,
  50        GPIO_MDIO = 1 << 15,
  51};
  52
  53unsigned int mclink_fpgacount;
  54struct ihs_fpga *fpga_ptr[] = CONFIG_SYS_FPGA_PTR;
  55
  56struct {
  57        u8 bus;
  58        u8 addr;
  59} hrcon_fans[] = CONFIG_HRCON_FANS;
  60
  61int fpga_set_reg(u32 fpga, u16 *reg, off_t regoff, u16 data)
  62{
  63        int res;
  64
  65        switch (fpga) {
  66        case 0:
  67                out_le16(reg, data);
  68                break;
  69        default:
  70                res = mclink_send(fpga - 1, regoff, data);
  71                if (res < 0) {
  72                        printf("mclink_send reg %02lx data %04x returned %d\n",
  73                               regoff, data, res);
  74                        return res;
  75                }
  76                break;
  77        }
  78
  79        return 0;
  80}
  81
  82int fpga_get_reg(u32 fpga, u16 *reg, off_t regoff, u16 *data)
  83{
  84        int res;
  85
  86        switch (fpga) {
  87        case 0:
  88                *data = in_le16(reg);
  89                break;
  90        default:
  91                if (fpga > mclink_fpgacount)
  92                        return -EINVAL;
  93                res = mclink_receive(fpga - 1, regoff, data);
  94                if (res < 0) {
  95                        printf("mclink_receive reg %02lx returned %d\n",
  96                               regoff, res);
  97                        return res;
  98                }
  99        }
 100
 101        return 0;
 102}
 103
 104int checkboard(void)
 105{
 106        char *s = getenv("serial#");
 107        bool hw_type_cat = pca9698_get_value(0x20, 20);
 108
 109        puts("Board: ");
 110
 111        printf("HRCon %s", hw_type_cat ? "CAT" : "Fiber");
 112
 113        if (s != NULL) {
 114                puts(", serial# ");
 115                puts(s);
 116        }
 117
 118        puts("\n");
 119
 120        return 0;
 121}
 122
 123int last_stage_init(void)
 124{
 125        int slaves;
 126        unsigned int k;
 127        unsigned int mux_ch;
 128        unsigned char mclink_controllers[] = { 0x3c, 0x3d, 0x3e };
 129        u16 fpga_features;
 130        bool hw_type_cat = pca9698_get_value(0x20, 20);
 131        bool ch0_rgmii2_present = false;
 132
 133        FPGA_GET_REG(0, fpga_features, &fpga_features);
 134
 135        /* Turn on Parade DP501 */
 136        pca9698_direction_output(0x20, 10, 1);
 137        pca9698_direction_output(0x20, 11, 1);
 138
 139        ch0_rgmii2_present = !pca9698_get_value(0x20, 30);
 140
 141        /* wait for FPGA done, then reset FPGA */
 142        for (k = 0; k < ARRAY_SIZE(mclink_controllers); ++k) {
 143                unsigned int ctr = 0;
 144
 145                if (i2c_probe(mclink_controllers[k]))
 146                        continue;
 147
 148                while (!(pca953x_get_val(mclink_controllers[k])
 149                       & MCFPGA_DONE)) {
 150                        udelay(100000);
 151                        if (ctr++ > 5) {
 152                                printf("no done for mclink_controller %d\n", k);
 153                                break;
 154                        }
 155                }
 156
 157                pca953x_set_dir(mclink_controllers[k], MCFPGA_RESET_N, 0);
 158                pca953x_set_val(mclink_controllers[k], MCFPGA_RESET_N, 0);
 159                udelay(10);
 160                pca953x_set_val(mclink_controllers[k], MCFPGA_RESET_N,
 161                                MCFPGA_RESET_N);
 162        }
 163
 164        if (hw_type_cat) {
 165                int retval;
 166                struct mii_dev *mdiodev = mdio_alloc();
 167                if (!mdiodev)
 168                        return -ENOMEM;
 169                strncpy(mdiodev->name, bb_miiphy_buses[0].name, MDIO_NAME_LEN);
 170                mdiodev->read = bb_miiphy_read;
 171                mdiodev->write = bb_miiphy_write;
 172
 173                retval = mdio_register(mdiodev);
 174                if (retval < 0)
 175                        return retval;
 176                for (mux_ch = 0; mux_ch < MAX_MUX_CHANNELS; ++mux_ch) {
 177                        if ((mux_ch == 1) && !ch0_rgmii2_present)
 178                                continue;
 179
 180                        setup_88e1514(bb_miiphy_buses[0].name, mux_ch);
 181                }
 182        }
 183
 184        /* give slave-PLLs and Parade DP501 some time to be up and running */
 185        udelay(500000);
 186
 187        mclink_fpgacount = CONFIG_SYS_MCLINK_MAX;
 188        slaves = mclink_probe();
 189        mclink_fpgacount = 0;
 190
 191        ioep_fpga_print_info(0);
 192        osd_probe(0);
 193#ifdef CONFIG_SYS_OSD_DH
 194        osd_probe(4);
 195#endif
 196
 197        if (slaves <= 0)
 198                return 0;
 199
 200        mclink_fpgacount = slaves;
 201
 202        for (k = 1; k <= slaves; ++k) {
 203                FPGA_GET_REG(k, fpga_features, &fpga_features);
 204
 205                ioep_fpga_print_info(k);
 206                osd_probe(k);
 207#ifdef CONFIG_SYS_OSD_DH
 208                osd_probe(k + 4);
 209#endif
 210                if (hw_type_cat) {
 211                        int retval;
 212                        struct mii_dev *mdiodev = mdio_alloc();
 213                        if (!mdiodev)
 214                                return -ENOMEM;
 215                        strncpy(mdiodev->name, bb_miiphy_buses[k].name,
 216                                MDIO_NAME_LEN);
 217                        mdiodev->read = bb_miiphy_read;
 218                        mdiodev->write = bb_miiphy_write;
 219
 220                        retval = mdio_register(mdiodev);
 221                        if (retval < 0)
 222                                return retval;
 223                        setup_88e1514(bb_miiphy_buses[k].name, 0);
 224                }
 225        }
 226
 227        for (k = 0; k < ARRAY_SIZE(hrcon_fans); ++k) {
 228                i2c_set_bus_num(hrcon_fans[k].bus);
 229                init_fan_controller(hrcon_fans[k].addr);
 230        }
 231
 232        return 0;
 233}
 234
 235/*
 236 * provide access to fpga gpios and controls (for I2C bitbang)
 237 * (these may look all too simple but make iocon.h much more readable)
 238 */
 239void fpga_gpio_set(unsigned int bus, int pin)
 240{
 241        FPGA_SET_REG(bus >= 4 ? (bus - 4) : bus, gpio.set, pin);
 242}
 243
 244void fpga_gpio_clear(unsigned int bus, int pin)
 245{
 246        FPGA_SET_REG(bus >= 4 ? (bus - 4) : bus, gpio.clear, pin);
 247}
 248
 249int fpga_gpio_get(unsigned int bus, int pin)
 250{
 251        u16 val;
 252
 253        FPGA_GET_REG(bus >= 4 ? (bus - 4) : bus, gpio.read, &val);
 254
 255        return val & pin;
 256}
 257
 258void fpga_control_set(unsigned int bus, int pin)
 259{
 260        u16 val;
 261
 262        FPGA_GET_REG(bus >= 4 ? (bus - 4) : bus, control, &val);
 263        FPGA_SET_REG(bus >= 4 ? (bus - 4) : bus, control, val | pin);
 264}
 265
 266void fpga_control_clear(unsigned int bus, int pin)
 267{
 268        u16 val;
 269
 270        FPGA_GET_REG(bus >= 4 ? (bus - 4) : bus, control, &val);
 271        FPGA_SET_REG(bus >= 4 ? (bus - 4) : bus, control, val & ~pin);
 272}
 273
 274void mpc8308_init(void)
 275{
 276        pca9698_direction_output(0x20, 4, 1);
 277}
 278
 279void mpc8308_set_fpga_reset(unsigned state)
 280{
 281        pca9698_set_value(0x20, 4, state ? 0 : 1);
 282}
 283
 284void mpc8308_setup_hw(void)
 285{
 286        immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
 287
 288        /*
 289         * set "startup-finished"-gpios
 290         */
 291        setbits_be32(&immr->gpio[0].dir, (1 << (31-11)) | (1 << (31-12)));
 292        setbits_be32(&immr->gpio[0].dat, 1 << (31-12));
 293}
 294
 295int mpc8308_get_fpga_done(unsigned fpga)
 296{
 297        return pca9698_get_value(0x20, 19);
 298}
 299
 300#ifdef CONFIG_FSL_ESDHC
 301int board_mmc_init(bd_t *bd)
 302{
 303        immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
 304        sysconf83xx_t *sysconf = &immr->sysconf;
 305
 306        /* Enable cache snooping in eSDHC system configuration register */
 307        out_be32(&sysconf->sdhccr, 0x02000000);
 308
 309        return fsl_esdhc_mmc_init(bd);
 310}
 311#endif
 312
 313static struct pci_region pcie_regions_0[] = {
 314        {
 315                .bus_start = CONFIG_SYS_PCIE1_MEM_BASE,
 316                .phys_start = CONFIG_SYS_PCIE1_MEM_PHYS,
 317                .size = CONFIG_SYS_PCIE1_MEM_SIZE,
 318                .flags = PCI_REGION_MEM,
 319        },
 320        {
 321                .bus_start = CONFIG_SYS_PCIE1_IO_BASE,
 322                .phys_start = CONFIG_SYS_PCIE1_IO_PHYS,
 323                .size = CONFIG_SYS_PCIE1_IO_SIZE,
 324                .flags = PCI_REGION_IO,
 325        },
 326};
 327
 328void pci_init_board(void)
 329{
 330        immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
 331        sysconf83xx_t *sysconf = &immr->sysconf;
 332        law83xx_t *pcie_law = sysconf->pcielaw;
 333        struct pci_region *pcie_reg[] = { pcie_regions_0 };
 334
 335        fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_PEX,
 336                         FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
 337
 338        /* Deassert the resets in the control register */
 339        out_be32(&sysconf->pecr1, 0xE0008000);
 340        udelay(2000);
 341
 342        /* Configure PCI Express Local Access Windows */
 343        out_be32(&pcie_law[0].bar, CONFIG_SYS_PCIE1_BASE & LAWBAR_BAR);
 344        out_be32(&pcie_law[0].ar, LBLAWAR_EN | LBLAWAR_512MB);
 345
 346        mpc83xx_pcie_init(1, pcie_reg);
 347}
 348
 349ulong board_flash_get_legacy(ulong base, int banknum, flash_info_t *info)
 350{
 351        info->portwidth = FLASH_CFI_16BIT;
 352        info->chipwidth = FLASH_CFI_BY16;
 353        info->interface = FLASH_CFI_X16;
 354        return 1;
 355}
 356
 357#if defined(CONFIG_OF_BOARD_SETUP)
 358int ft_board_setup(void *blob, bd_t *bd)
 359{
 360        ft_cpu_setup(blob, bd);
 361        fsl_fdt_fixup_dr_usb(blob, bd);
 362        fdt_fixup_esdhc(blob, bd);
 363
 364        return 0;
 365}
 366#endif
 367
 368/*
 369 * FPGA MII bitbang implementation
 370 */
 371
 372struct fpga_mii {
 373        unsigned fpga;
 374        int mdio;
 375} fpga_mii[] = {
 376        { 0, 1},
 377        { 1, 1},
 378        { 2, 1},
 379        { 3, 1},
 380};
 381
 382static int mii_dummy_init(struct bb_miiphy_bus *bus)
 383{
 384        return 0;
 385}
 386
 387static int mii_mdio_active(struct bb_miiphy_bus *bus)
 388{
 389        struct fpga_mii *fpga_mii = bus->priv;
 390
 391        if (fpga_mii->mdio)
 392                FPGA_SET_REG(fpga_mii->fpga, gpio.set, GPIO_MDIO);
 393        else
 394                FPGA_SET_REG(fpga_mii->fpga, gpio.clear, GPIO_MDIO);
 395
 396        return 0;
 397}
 398
 399static int mii_mdio_tristate(struct bb_miiphy_bus *bus)
 400{
 401        struct fpga_mii *fpga_mii = bus->priv;
 402
 403        FPGA_SET_REG(fpga_mii->fpga, gpio.set, GPIO_MDIO);
 404
 405        return 0;
 406}
 407
 408static int mii_set_mdio(struct bb_miiphy_bus *bus, int v)
 409{
 410        struct fpga_mii *fpga_mii = bus->priv;
 411
 412        if (v)
 413                FPGA_SET_REG(fpga_mii->fpga, gpio.set, GPIO_MDIO);
 414        else
 415                FPGA_SET_REG(fpga_mii->fpga, gpio.clear, GPIO_MDIO);
 416
 417        fpga_mii->mdio = v;
 418
 419        return 0;
 420}
 421
 422static int mii_get_mdio(struct bb_miiphy_bus *bus, int *v)
 423{
 424        u16 gpio;
 425        struct fpga_mii *fpga_mii = bus->priv;
 426
 427        FPGA_GET_REG(fpga_mii->fpga, gpio.read, &gpio);
 428
 429        *v = ((gpio & GPIO_MDIO) != 0);
 430
 431        return 0;
 432}
 433
 434static int mii_set_mdc(struct bb_miiphy_bus *bus, int v)
 435{
 436        struct fpga_mii *fpga_mii = bus->priv;
 437
 438        if (v)
 439                FPGA_SET_REG(fpga_mii->fpga, gpio.set, GPIO_MDC);
 440        else
 441                FPGA_SET_REG(fpga_mii->fpga, gpio.clear, GPIO_MDC);
 442
 443        return 0;
 444}
 445
 446static int mii_delay(struct bb_miiphy_bus *bus)
 447{
 448        udelay(1);
 449
 450        return 0;
 451}
 452
 453struct bb_miiphy_bus bb_miiphy_buses[] = {
 454        {
 455                .name = "board0",
 456                .init = mii_dummy_init,
 457                .mdio_active = mii_mdio_active,
 458                .mdio_tristate = mii_mdio_tristate,
 459                .set_mdio = mii_set_mdio,
 460                .get_mdio = mii_get_mdio,
 461                .set_mdc = mii_set_mdc,
 462                .delay = mii_delay,
 463                .priv = &fpga_mii[0],
 464        },
 465        {
 466                .name = "board1",
 467                .init = mii_dummy_init,
 468                .mdio_active = mii_mdio_active,
 469                .mdio_tristate = mii_mdio_tristate,
 470                .set_mdio = mii_set_mdio,
 471                .get_mdio = mii_get_mdio,
 472                .set_mdc = mii_set_mdc,
 473                .delay = mii_delay,
 474                .priv = &fpga_mii[1],
 475        },
 476        {
 477                .name = "board2",
 478                .init = mii_dummy_init,
 479                .mdio_active = mii_mdio_active,
 480                .mdio_tristate = mii_mdio_tristate,
 481                .set_mdio = mii_set_mdio,
 482                .get_mdio = mii_get_mdio,
 483                .set_mdc = mii_set_mdc,
 484                .delay = mii_delay,
 485                .priv = &fpga_mii[2],
 486        },
 487        {
 488                .name = "board3",
 489                .init = mii_dummy_init,
 490                .mdio_active = mii_mdio_active,
 491                .mdio_tristate = mii_mdio_tristate,
 492                .set_mdio = mii_set_mdio,
 493                .get_mdio = mii_get_mdio,
 494                .set_mdc = mii_set_mdc,
 495                .delay = mii_delay,
 496                .priv = &fpga_mii[3],
 497        },
 498};
 499
 500int bb_miiphy_buses_num = sizeof(bb_miiphy_buses) /
 501                          sizeof(bb_miiphy_buses[0]);
 502