uboot/board/gdsys/mpc8308/hrcon.c
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   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2014
   4 * Dirk Eibach,  Guntermann & Drunck GmbH, dirk.eibach@gdsys.cc
   5 */
   6
   7#include <common.h>
   8#include <hwconfig.h>
   9#include <i2c.h>
  10#include <spi.h>
  11#include <linux/libfdt.h>
  12#include <fdt_support.h>
  13#include <pci.h>
  14#include <mpc83xx.h>
  15#include <fsl_esdhc.h>
  16#include <asm/io.h>
  17#include <asm/fsl_serdes.h>
  18#include <asm/fsl_mpc83xx_serdes.h>
  19
  20#include "mpc8308.h"
  21
  22#include <gdsys_fpga.h>
  23
  24#include "../common/ioep-fpga.h"
  25#include "../common/osd.h"
  26#include "../common/mclink.h"
  27#include "../common/phy.h"
  28#include "../common/fanctrl.h"
  29
  30#include <pca953x.h>
  31#include <pca9698.h>
  32
  33#include <miiphy.h>
  34
  35#define MAX_MUX_CHANNELS 2
  36
  37enum {
  38        MCFPGA_DONE = 1 << 0,
  39        MCFPGA_INIT_N = 1 << 1,
  40        MCFPGA_PROGRAM_N = 1 << 2,
  41        MCFPGA_UPDATE_ENABLE_N = 1 << 3,
  42        MCFPGA_RESET_N = 1 << 4,
  43};
  44
  45enum {
  46        GPIO_MDC = 1 << 14,
  47        GPIO_MDIO = 1 << 15,
  48};
  49
  50unsigned int mclink_fpgacount;
  51struct ihs_fpga *fpga_ptr[] = CONFIG_SYS_FPGA_PTR;
  52
  53struct {
  54        u8 bus;
  55        u8 addr;
  56} hrcon_fans[] = CONFIG_HRCON_FANS;
  57
  58int fpga_set_reg(u32 fpga, u16 *reg, off_t regoff, u16 data)
  59{
  60        int res;
  61
  62        switch (fpga) {
  63        case 0:
  64                out_le16(reg, data);
  65                break;
  66        default:
  67                res = mclink_send(fpga - 1, regoff, data);
  68                if (res < 0) {
  69                        printf("mclink_send reg %02lx data %04x returned %d\n",
  70                               regoff, data, res);
  71                        return res;
  72                }
  73                break;
  74        }
  75
  76        return 0;
  77}
  78
  79int fpga_get_reg(u32 fpga, u16 *reg, off_t regoff, u16 *data)
  80{
  81        int res;
  82
  83        switch (fpga) {
  84        case 0:
  85                *data = in_le16(reg);
  86                break;
  87        default:
  88                if (fpga > mclink_fpgacount)
  89                        return -EINVAL;
  90                res = mclink_receive(fpga - 1, regoff, data);
  91                if (res < 0) {
  92                        printf("mclink_receive reg %02lx returned %d\n",
  93                               regoff, res);
  94                        return res;
  95                }
  96        }
  97
  98        return 0;
  99}
 100
 101int checkboard(void)
 102{
 103        char *s = env_get("serial#");
 104        bool hw_type_cat = pca9698_get_value(0x20, 20);
 105
 106        puts("Board: ");
 107
 108        printf("HRCon %s", hw_type_cat ? "CAT" : "Fiber");
 109
 110        if (s != NULL) {
 111                puts(", serial# ");
 112                puts(s);
 113        }
 114
 115        puts("\n");
 116
 117        return 0;
 118}
 119
 120int last_stage_init(void)
 121{
 122        int slaves;
 123        unsigned int k;
 124        unsigned int mux_ch;
 125        unsigned char mclink_controllers[] = { 0x3c, 0x3d, 0x3e };
 126        u16 fpga_features;
 127        bool hw_type_cat = pca9698_get_value(0x20, 20);
 128        bool ch0_rgmii2_present = false;
 129
 130        FPGA_GET_REG(0, fpga_features, &fpga_features);
 131
 132        /* Turn on Parade DP501 */
 133        pca9698_direction_output(0x20, 10, 1);
 134        pca9698_direction_output(0x20, 11, 1);
 135
 136        ch0_rgmii2_present = !pca9698_get_value(0x20, 30);
 137
 138        /* wait for FPGA done, then reset FPGA */
 139        for (k = 0; k < ARRAY_SIZE(mclink_controllers); ++k) {
 140                unsigned int ctr = 0;
 141
 142                if (i2c_probe(mclink_controllers[k]))
 143                        continue;
 144
 145                while (!(pca953x_get_val(mclink_controllers[k])
 146                       & MCFPGA_DONE)) {
 147                        udelay(100000);
 148                        if (ctr++ > 5) {
 149                                printf("no done for mclink_controller %d\n", k);
 150                                break;
 151                        }
 152                }
 153
 154                pca953x_set_dir(mclink_controllers[k], MCFPGA_RESET_N, 0);
 155                pca953x_set_val(mclink_controllers[k], MCFPGA_RESET_N, 0);
 156                udelay(10);
 157                pca953x_set_val(mclink_controllers[k], MCFPGA_RESET_N,
 158                                MCFPGA_RESET_N);
 159        }
 160
 161        if (hw_type_cat) {
 162                int retval;
 163                struct mii_dev *mdiodev = mdio_alloc();
 164                if (!mdiodev)
 165                        return -ENOMEM;
 166                strncpy(mdiodev->name, bb_miiphy_buses[0].name, MDIO_NAME_LEN);
 167                mdiodev->read = bb_miiphy_read;
 168                mdiodev->write = bb_miiphy_write;
 169
 170                retval = mdio_register(mdiodev);
 171                if (retval < 0)
 172                        return retval;
 173                for (mux_ch = 0; mux_ch < MAX_MUX_CHANNELS; ++mux_ch) {
 174                        if ((mux_ch == 1) && !ch0_rgmii2_present)
 175                                continue;
 176
 177                        setup_88e1514(bb_miiphy_buses[0].name, mux_ch);
 178                }
 179        }
 180
 181        /* give slave-PLLs and Parade DP501 some time to be up and running */
 182        udelay(500000);
 183
 184        mclink_fpgacount = CONFIG_SYS_MCLINK_MAX;
 185        slaves = mclink_probe();
 186        mclink_fpgacount = 0;
 187
 188        ioep_fpga_print_info(0);
 189        osd_probe(0);
 190#ifdef CONFIG_SYS_OSD_DH
 191        osd_probe(4);
 192#endif
 193
 194        if (slaves <= 0)
 195                return 0;
 196
 197        mclink_fpgacount = slaves;
 198
 199        for (k = 1; k <= slaves; ++k) {
 200                FPGA_GET_REG(k, fpga_features, &fpga_features);
 201
 202                ioep_fpga_print_info(k);
 203                osd_probe(k);
 204#ifdef CONFIG_SYS_OSD_DH
 205                osd_probe(k + 4);
 206#endif
 207                if (hw_type_cat) {
 208                        int retval;
 209                        struct mii_dev *mdiodev = mdio_alloc();
 210                        if (!mdiodev)
 211                                return -ENOMEM;
 212                        strncpy(mdiodev->name, bb_miiphy_buses[k].name,
 213                                MDIO_NAME_LEN);
 214                        mdiodev->read = bb_miiphy_read;
 215                        mdiodev->write = bb_miiphy_write;
 216
 217                        retval = mdio_register(mdiodev);
 218                        if (retval < 0)
 219                                return retval;
 220                        setup_88e1514(bb_miiphy_buses[k].name, 0);
 221                }
 222        }
 223
 224        for (k = 0; k < ARRAY_SIZE(hrcon_fans); ++k) {
 225                i2c_set_bus_num(hrcon_fans[k].bus);
 226                init_fan_controller(hrcon_fans[k].addr);
 227        }
 228
 229        return 0;
 230}
 231
 232/*
 233 * provide access to fpga gpios and controls (for I2C bitbang)
 234 * (these may look all too simple but make iocon.h much more readable)
 235 */
 236void fpga_gpio_set(unsigned int bus, int pin)
 237{
 238        FPGA_SET_REG(bus >= 4 ? (bus - 4) : bus, gpio.set, pin);
 239}
 240
 241void fpga_gpio_clear(unsigned int bus, int pin)
 242{
 243        FPGA_SET_REG(bus >= 4 ? (bus - 4) : bus, gpio.clear, pin);
 244}
 245
 246int fpga_gpio_get(unsigned int bus, int pin)
 247{
 248        u16 val;
 249
 250        FPGA_GET_REG(bus >= 4 ? (bus - 4) : bus, gpio.read, &val);
 251
 252        return val & pin;
 253}
 254
 255void fpga_control_set(unsigned int bus, int pin)
 256{
 257        u16 val;
 258
 259        FPGA_GET_REG(bus >= 4 ? (bus - 4) : bus, control, &val);
 260        FPGA_SET_REG(bus >= 4 ? (bus - 4) : bus, control, val | pin);
 261}
 262
 263void fpga_control_clear(unsigned int bus, int pin)
 264{
 265        u16 val;
 266
 267        FPGA_GET_REG(bus >= 4 ? (bus - 4) : bus, control, &val);
 268        FPGA_SET_REG(bus >= 4 ? (bus - 4) : bus, control, val & ~pin);
 269}
 270
 271void mpc8308_init(void)
 272{
 273        pca9698_direction_output(0x20, 4, 1);
 274}
 275
 276void mpc8308_set_fpga_reset(unsigned state)
 277{
 278        pca9698_set_value(0x20, 4, state ? 0 : 1);
 279}
 280
 281void mpc8308_setup_hw(void)
 282{
 283        immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
 284
 285        /*
 286         * set "startup-finished"-gpios
 287         */
 288        setbits_be32(&immr->gpio[0].dir, (1 << (31-11)) | (1 << (31-12)));
 289        setbits_be32(&immr->gpio[0].dat, 1 << (31-12));
 290}
 291
 292int mpc8308_get_fpga_done(unsigned fpga)
 293{
 294        return pca9698_get_value(0x20, 19);
 295}
 296
 297#ifdef CONFIG_FSL_ESDHC
 298int board_mmc_init(bd_t *bd)
 299{
 300        immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
 301        sysconf83xx_t *sysconf = &immr->sysconf;
 302
 303        /* Enable cache snooping in eSDHC system configuration register */
 304        out_be32(&sysconf->sdhccr, 0x02000000);
 305
 306        return fsl_esdhc_mmc_init(bd);
 307}
 308#endif
 309
 310static struct pci_region pcie_regions_0[] = {
 311        {
 312                .bus_start = CONFIG_SYS_PCIE1_MEM_BASE,
 313                .phys_start = CONFIG_SYS_PCIE1_MEM_PHYS,
 314                .size = CONFIG_SYS_PCIE1_MEM_SIZE,
 315                .flags = PCI_REGION_MEM,
 316        },
 317        {
 318                .bus_start = CONFIG_SYS_PCIE1_IO_BASE,
 319                .phys_start = CONFIG_SYS_PCIE1_IO_PHYS,
 320                .size = CONFIG_SYS_PCIE1_IO_SIZE,
 321                .flags = PCI_REGION_IO,
 322        },
 323};
 324
 325void pci_init_board(void)
 326{
 327        immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
 328        sysconf83xx_t *sysconf = &immr->sysconf;
 329        law83xx_t *pcie_law = sysconf->pcielaw;
 330        struct pci_region *pcie_reg[] = { pcie_regions_0 };
 331
 332        fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_PEX,
 333                         FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
 334
 335        /* Deassert the resets in the control register */
 336        out_be32(&sysconf->pecr1, 0xE0008000);
 337        udelay(2000);
 338
 339        /* Configure PCI Express Local Access Windows */
 340        out_be32(&pcie_law[0].bar, CONFIG_SYS_PCIE1_BASE & LAWBAR_BAR);
 341        out_be32(&pcie_law[0].ar, LBLAWAR_EN | LBLAWAR_512MB);
 342
 343        mpc83xx_pcie_init(1, pcie_reg);
 344}
 345
 346ulong board_flash_get_legacy(ulong base, int banknum, flash_info_t *info)
 347{
 348        info->portwidth = FLASH_CFI_16BIT;
 349        info->chipwidth = FLASH_CFI_BY16;
 350        info->interface = FLASH_CFI_X16;
 351        return 1;
 352}
 353
 354#if defined(CONFIG_OF_BOARD_SETUP)
 355int ft_board_setup(void *blob, bd_t *bd)
 356{
 357        ft_cpu_setup(blob, bd);
 358        fsl_fdt_fixup_dr_usb(blob, bd);
 359        fdt_fixup_esdhc(blob, bd);
 360
 361        return 0;
 362}
 363#endif
 364
 365/*
 366 * FPGA MII bitbang implementation
 367 */
 368
 369struct fpga_mii {
 370        unsigned fpga;
 371        int mdio;
 372} fpga_mii[] = {
 373        { 0, 1},
 374        { 1, 1},
 375        { 2, 1},
 376        { 3, 1},
 377};
 378
 379static int mii_dummy_init(struct bb_miiphy_bus *bus)
 380{
 381        return 0;
 382}
 383
 384static int mii_mdio_active(struct bb_miiphy_bus *bus)
 385{
 386        struct fpga_mii *fpga_mii = bus->priv;
 387
 388        if (fpga_mii->mdio)
 389                FPGA_SET_REG(fpga_mii->fpga, gpio.set, GPIO_MDIO);
 390        else
 391                FPGA_SET_REG(fpga_mii->fpga, gpio.clear, GPIO_MDIO);
 392
 393        return 0;
 394}
 395
 396static int mii_mdio_tristate(struct bb_miiphy_bus *bus)
 397{
 398        struct fpga_mii *fpga_mii = bus->priv;
 399
 400        FPGA_SET_REG(fpga_mii->fpga, gpio.set, GPIO_MDIO);
 401
 402        return 0;
 403}
 404
 405static int mii_set_mdio(struct bb_miiphy_bus *bus, int v)
 406{
 407        struct fpga_mii *fpga_mii = bus->priv;
 408
 409        if (v)
 410                FPGA_SET_REG(fpga_mii->fpga, gpio.set, GPIO_MDIO);
 411        else
 412                FPGA_SET_REG(fpga_mii->fpga, gpio.clear, GPIO_MDIO);
 413
 414        fpga_mii->mdio = v;
 415
 416        return 0;
 417}
 418
 419static int mii_get_mdio(struct bb_miiphy_bus *bus, int *v)
 420{
 421        u16 gpio;
 422        struct fpga_mii *fpga_mii = bus->priv;
 423
 424        FPGA_GET_REG(fpga_mii->fpga, gpio.read, &gpio);
 425
 426        *v = ((gpio & GPIO_MDIO) != 0);
 427
 428        return 0;
 429}
 430
 431static int mii_set_mdc(struct bb_miiphy_bus *bus, int v)
 432{
 433        struct fpga_mii *fpga_mii = bus->priv;
 434
 435        if (v)
 436                FPGA_SET_REG(fpga_mii->fpga, gpio.set, GPIO_MDC);
 437        else
 438                FPGA_SET_REG(fpga_mii->fpga, gpio.clear, GPIO_MDC);
 439
 440        return 0;
 441}
 442
 443static int mii_delay(struct bb_miiphy_bus *bus)
 444{
 445        udelay(1);
 446
 447        return 0;
 448}
 449
 450struct bb_miiphy_bus bb_miiphy_buses[] = {
 451        {
 452                .name = "board0",
 453                .init = mii_dummy_init,
 454                .mdio_active = mii_mdio_active,
 455                .mdio_tristate = mii_mdio_tristate,
 456                .set_mdio = mii_set_mdio,
 457                .get_mdio = mii_get_mdio,
 458                .set_mdc = mii_set_mdc,
 459                .delay = mii_delay,
 460                .priv = &fpga_mii[0],
 461        },
 462        {
 463                .name = "board1",
 464                .init = mii_dummy_init,
 465                .mdio_active = mii_mdio_active,
 466                .mdio_tristate = mii_mdio_tristate,
 467                .set_mdio = mii_set_mdio,
 468                .get_mdio = mii_get_mdio,
 469                .set_mdc = mii_set_mdc,
 470                .delay = mii_delay,
 471                .priv = &fpga_mii[1],
 472        },
 473        {
 474                .name = "board2",
 475                .init = mii_dummy_init,
 476                .mdio_active = mii_mdio_active,
 477                .mdio_tristate = mii_mdio_tristate,
 478                .set_mdio = mii_set_mdio,
 479                .get_mdio = mii_get_mdio,
 480                .set_mdc = mii_set_mdc,
 481                .delay = mii_delay,
 482                .priv = &fpga_mii[2],
 483        },
 484        {
 485                .name = "board3",
 486                .init = mii_dummy_init,
 487                .mdio_active = mii_mdio_active,
 488                .mdio_tristate = mii_mdio_tristate,
 489                .set_mdio = mii_set_mdio,
 490                .get_mdio = mii_get_mdio,
 491                .set_mdc = mii_set_mdc,
 492                .delay = mii_delay,
 493                .priv = &fpga_mii[3],
 494        },
 495};
 496
 497int bb_miiphy_buses_num = sizeof(bb_miiphy_buses) /
 498                          sizeof(bb_miiphy_buses[0]);
 499