arch/mips/cavium-octeon/octeon-platform.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2004-2016 Cavium Networks
   7  * Copyright (C) 2008 Wind River Systems
   8  */
   9
  10 #include <linux/init.h>
  11 #include <linux/delay.h>
  12 #include <linux/etherdevice.h>
  13 #include <linux/of_platform.h>
  14 #include <linux/of_fdt.h>
  15 #include <linux/libfdt.h>
  16 #include <linux/usb/ehci_def.h>
  17 #include <linux/usb/ehci_pdriver.h>
  18 #include <linux/usb/ohci_pdriver.h>
  19
  20 #include <asm/octeon/octeon.h>
  21 #include <asm/octeon/cvmx-helper-board.h>
  22 #include <asm/octeon/cvmx-uctlx-defs.h>
  23
  24 #define CVMX_UAHCX_EHCI_USBCMD  (CVMX_ADD_IO_SEG(0x00016F0000000010ull))
  25 #define CVMX_UAHCX_OHCI_USBCMD  (CVMX_ADD_IO_SEG(0x00016F0000000408ull))
  26
  27 /* Octeon Random Number Generator.  */
  28 static int __init octeon_rng_device_init(void)
  29 {
  30         struct platform_device *pd;
  31         int ret = 0;
  32
  33         struct resource rng_resources[] = {
  34                 {
  35                         .flags  = IORESOURCE_MEM,
  36                         .start  = XKPHYS_TO_PHYS(CVMX_RNM_CTL_STATUS),
  37                         .end    = XKPHYS_TO_PHYS(CVMX_RNM_CTL_STATUS) + 0xf
  38                 }, {
  39                         .flags  = IORESOURCE_MEM,
  40                         .start  = cvmx_build_io_address(8, 0),
  41                         .end    = cvmx_build_io_address(8, 0) + 0x7
  42                 }
  43         };
  44
  45         pd = platform_device_alloc("octeon_rng", -1);
  46         if (!pd) {
  47                 ret = -ENOMEM;
  48                 goto out;
  49         }
  50
  51         ret = platform_device_add_resources(pd, rng_resources,
  52                                             ARRAY_SIZE(rng_resources));
  53         if (ret)
  54                 goto fail;
  55
  56         ret = platform_device_add(pd);
  57         if (ret)
  58                 goto fail;
  59
  60         return ret;
  61 fail:
  62         platform_device_put(pd);
  63
  64 out:
  65         return ret;
  66 }
  67 device_initcall(octeon_rng_device_init);
  68
  69 #ifdef CONFIG_USB
  70
  71 static DEFINE_MUTEX(octeon2_usb_clocks_mutex);
  72
  73 static int octeon2_usb_clock_start_cnt;
  74
  75 static int __init octeon2_usb_reset(void)
  76 {
  77         union cvmx_uctlx_clk_rst_ctl clk_rst_ctl;
  78         u32 ucmd;
  79
  80         if (!OCTEON_IS_OCTEON2())
  81                 return 0;
  82
  83         clk_rst_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_CLK_RST_CTL(0));
  84         if (clk_rst_ctl.s.hrst) {
  85                 ucmd = cvmx_read64_uint32(CVMX_UAHCX_EHCI_USBCMD);
  86                 ucmd &= ~CMD_RUN;
  87                 cvmx_write64_uint32(CVMX_UAHCX_EHCI_USBCMD, ucmd);
  88                 mdelay(2);
  89                 ucmd |= CMD_RESET;
  90                 cvmx_write64_uint32(CVMX_UAHCX_EHCI_USBCMD, ucmd);
  91                 ucmd = cvmx_read64_uint32(CVMX_UAHCX_OHCI_USBCMD);
  92                 ucmd |= CMD_RUN;
  93                 cvmx_write64_uint32(CVMX_UAHCX_OHCI_USBCMD, ucmd);
  94         }
  95
  96         return 0;
  97 }
  98 arch_initcall(octeon2_usb_reset);
  99
 100 static void octeon2_usb_clocks_start(struct device *dev)
 101 {
 102         u64 div;
 103         union cvmx_uctlx_if_ena if_ena;
 104         union cvmx_uctlx_clk_rst_ctl clk_rst_ctl;
 105         union cvmx_uctlx_uphy_portx_ctl_status port_ctl_status;
 106         int i;
 107         unsigned long io_clk_64_to_ns;
 108         u32 clock_rate = 12000000;
 109         bool is_crystal_clock = false;
 110
 111
 112         mutex_lock(&octeon2_usb_clocks_mutex);
 113
 114         octeon2_usb_clock_start_cnt++;
 115         if (octeon2_usb_clock_start_cnt != 1)
 116                 goto exit;
 117
 118         io_clk_64_to_ns = 64000000000ull / octeon_get_io_clock_rate();
 119
 120         if (dev->of_node) {
 121                 struct device_node *uctl_node;
 122                 const char *clock_type;
 123
 124                 uctl_node = of_get_parent(dev->of_node);
 125                 if (!uctl_node) {
 126                         dev_err(dev, "No UCTL device node\n");
 127                         goto exit;
 128                 }
 129                 i = of_property_read_u32(uctl_node,
 130                                          "refclk-frequency", &clock_rate);
 131                 if (i) {
 132                         dev_err(dev, "No UCTL \"refclk-frequency\"\n");
 133                         goto exit;
 134                 }
 135                 i = of_property_read_string(uctl_node,
 136                                             "refclk-type", &clock_type);
 137
 138                 if (!i && strcmp("crystal", clock_type) == 0)
 139                         is_crystal_clock = true;
 140         }
 141
 142         /*
 143          * Step 1: Wait for voltages stable.  That surely happened
 144          * before starting the kernel.
 145          *
 146          * Step 2: Enable  SCLK of UCTL by writing UCTL0_IF_ENA[EN] = 1
 147          */
 148         if_ena.u64 = 0;
 149         if_ena.s.en = 1;
 150         cvmx_write_csr(CVMX_UCTLX_IF_ENA(0), if_ena.u64);
 151
 152         for (i = 0; i <= 1; i++) {
 153                 port_ctl_status.u64 =
 154                         cvmx_read_csr(CVMX_UCTLX_UPHY_PORTX_CTL_STATUS(i, 0));
 155                 /* Set txvreftune to 15 to obtain compliant 'eye' diagram. */
 156                 port_ctl_status.s.txvreftune = 15;
 157                 port_ctl_status.s.txrisetune = 1;
 158                 port_ctl_status.s.txpreemphasistune = 1;
 159                 cvmx_write_csr(CVMX_UCTLX_UPHY_PORTX_CTL_STATUS(i, 0),
 160                                port_ctl_status.u64);
 161         }
 162
 163         /* Step 3: Configure the reference clock, PHY, and HCLK */
 164         clk_rst_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_CLK_RST_CTL(0));
 165
 166         /*
 167          * If the UCTL looks like it has already been started, skip
 168          * the initialization, otherwise bus errors are obtained.
 169          */
 170         if (clk_rst_ctl.s.hrst)
 171                 goto end_clock;
 172         /* 3a */
 173         clk_rst_ctl.s.p_por = 1;
 174         clk_rst_ctl.s.hrst = 0;
 175         clk_rst_ctl.s.p_prst = 0;
 176         clk_rst_ctl.s.h_clkdiv_rst = 0;
 177         clk_rst_ctl.s.o_clkdiv_rst = 0;
 178         clk_rst_ctl.s.h_clkdiv_en = 0;
 179         clk_rst_ctl.s.o_clkdiv_en = 0;
 180         cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
 181
 182         /* 3b */
 183         clk_rst_ctl.s.p_refclk_sel = is_crystal_clock ? 0 : 1;
 184         switch (clock_rate) {
 185         default:
 186                 pr_err("Invalid UCTL clock rate of %u, using 12000000 instead\n",
 187                         clock_rate);
 188                 /* Fall through */
 189         case 12000000:
 190                 clk_rst_ctl.s.p_refclk_div = 0;
 191                 break;
 192         case 24000000:
 193                 clk_rst_ctl.s.p_refclk_div = 1;
 194                 break;
 195         case 48000000:
 196                 clk_rst_ctl.s.p_refclk_div = 2;
 197                 break;
 198         }
 199         cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
 200
 201         /* 3c */
 202         div = octeon_get_io_clock_rate() / 130000000ull;
 203
 204         switch (div) {
 205         case 0:
 206                 div = 1;
 207                 break;
 208         case 1:
 209         case 2:
 210         case 3:
 211         case 4:
 212                 break;
 213         case 5:
 214                 div = 4;
 215                 break;
 216         case 6:
 217         case 7:
 218                 div = 6;
 219                 break;
 220         case 8:
 221         case 9:
 222         case 10:
 223         case 11:
 224                 div = 8;
 225                 break;
 226         default:
 227                 div = 12;
 228                 break;
 229         }
 230         clk_rst_ctl.s.h_div = div;
 231         cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
 232         /* Read it back, */
 233         clk_rst_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_CLK_RST_CTL(0));
 234         clk_rst_ctl.s.h_clkdiv_en = 1;
 235         cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
 236         /* 3d */
 237         clk_rst_ctl.s.h_clkdiv_rst = 1;
 238         cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
 239
 240         /* 3e: delay 64 io clocks */
 241         ndelay(io_clk_64_to_ns);
 242
 243         /*
 244          * Step 4: Program the power-on reset field in the UCTL
 245          * clock-reset-control register.
 246          */
 247         clk_rst_ctl.s.p_por = 0;
 248         cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
 249
 250         /* Step 5:    Wait 3 ms for the PHY clock to start. */
 251         mdelay(3);
 252
 253         /* Steps 6..9 for ATE only, are skipped. */
 254
 255         /* Step 10: Configure the OHCI_CLK48 and OHCI_CLK12 clocks. */
 256         /* 10a */
 257         clk_rst_ctl.s.o_clkdiv_rst = 1;
 258         cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
 259
 260         /* 10b */
 261         clk_rst_ctl.s.o_clkdiv_en = 1;
 262         cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
 263
 264         /* 10c */
 265         ndelay(io_clk_64_to_ns);
 266
 267         /*
 268          * Step 11: Program the PHY reset field:
 269          * UCTL0_CLK_RST_CTL[P_PRST] = 1
 270          */
 271         clk_rst_ctl.s.p_prst = 1;
 272         cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
 273
 274         /* Step 11b */
 275         udelay(1);
 276
 277         /* Step 11c */
 278         clk_rst_ctl.s.p_prst = 0;
 279         cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
 280
 281         /* Step 11d */
 282         mdelay(1);
 283
 284         /* Step 11e */
 285         clk_rst_ctl.s.p_prst = 1;
 286         cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
 287
 288         /* Step 12: Wait 1 uS. */
 289         udelay(1);
 290
 291         /* Step 13: Program the HRESET_N field: UCTL0_CLK_RST_CTL[HRST] = 1 */
 292         clk_rst_ctl.s.hrst = 1;
 293         cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
 294
 295 end_clock:
 296         /* Set uSOF cycle period to 60,000 bits. */
 297         cvmx_write_csr(CVMX_UCTLX_EHCI_FLA(0), 0x20ull);
 298
 299 exit:
 300         mutex_unlock(&octeon2_usb_clocks_mutex);
 301 }
 302
 303 static void octeon2_usb_clocks_stop(void)
 304 {
 305         mutex_lock(&octeon2_usb_clocks_mutex);
 306         octeon2_usb_clock_start_cnt--;
 307         mutex_unlock(&octeon2_usb_clocks_mutex);
 308 }
 309
 310 static int octeon_ehci_power_on(struct platform_device *pdev)
 311 {
 312         octeon2_usb_clocks_start(&pdev->dev);
 313         return 0;
 314 }
 315
 316 static void octeon_ehci_power_off(struct platform_device *pdev)
 317 {
 318         octeon2_usb_clocks_stop();
 319 }
 320
 321 static struct usb_ehci_pdata octeon_ehci_pdata = {
 322         /* Octeon EHCI matches CPU endianness. */
 323 #ifdef __BIG_ENDIAN
 324         .big_endian_mmio        = 1,
 325 #endif
 326         /*
 327          * We can DMA from anywhere. But the descriptors must be in
 328          * the lower 4GB.
 329          */
 330         .dma_mask_64    = 0,
 331         .power_on       = octeon_ehci_power_on,
 332         .power_off      = octeon_ehci_power_off,
 333 };
 334
 335 static void __init octeon_ehci_hw_start(struct device *dev)
 336 {
 337         union cvmx_uctlx_ehci_ctl ehci_ctl;
 338
 339         octeon2_usb_clocks_start(dev);
 340
 341         ehci_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_EHCI_CTL(0));
 342         /* Use 64-bit addressing. */
 343         ehci_ctl.s.ehci_64b_addr_en = 1;
 344         ehci_ctl.s.l2c_addr_msb = 0;
 345 #ifdef __BIG_ENDIAN
 346         ehci_ctl.s.l2c_buff_emod = 1; /* Byte swapped. */
 347         ehci_ctl.s.l2c_desc_emod = 1; /* Byte swapped. */
 348 #else
 349         ehci_ctl.s.l2c_buff_emod = 0; /* not swapped. */
 350         ehci_ctl.s.l2c_desc_emod = 0; /* not swapped. */
 351         ehci_ctl.s.inv_reg_a2 = 1;
 352 #endif
 353         cvmx_write_csr(CVMX_UCTLX_EHCI_CTL(0), ehci_ctl.u64);
 354
 355         octeon2_usb_clocks_stop();
 356 }
 357
 358 static int __init octeon_ehci_device_init(void)
 359 {
 360         struct platform_device *pd;
 361         struct device_node *ehci_node;
 362         int ret = 0;
 363
 364         ehci_node = of_find_node_by_name(NULL, "ehci");
 365         if (!ehci_node)
 366                 return 0;
 367
 368         pd = of_find_device_by_node(ehci_node);
 369         if (!pd)
 370                 return 0;
 371
 372         pd->dev.platform_data = &octeon_ehci_pdata;
 373         octeon_ehci_hw_start(&pd->dev);
 374
 375         return ret;
 376 }
 377 device_initcall(octeon_ehci_device_init);
 378
 379 static int octeon_ohci_power_on(struct platform_device *pdev)
 380 {
 381         octeon2_usb_clocks_start(&pdev->dev);
 382         return 0;
 383 }
 384
 385 static void octeon_ohci_power_off(struct platform_device *pdev)
 386 {
 387         octeon2_usb_clocks_stop();
 388 }
 389
 390 static struct usb_ohci_pdata octeon_ohci_pdata = {
 391         /* Octeon OHCI matches CPU endianness. */
 392 #ifdef __BIG_ENDIAN
 393         .big_endian_mmio        = 1,
 394 #endif
 395         .power_on       = octeon_ohci_power_on,
 396         .power_off      = octeon_ohci_power_off,
 397 };
 398
 399 static void __init octeon_ohci_hw_start(struct device *dev)
 400 {
 401         union cvmx_uctlx_ohci_ctl ohci_ctl;
 402
 403         octeon2_usb_clocks_start(dev);
 404
 405         ohci_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_OHCI_CTL(0));
 406         ohci_ctl.s.l2c_addr_msb = 0;
 407 #ifdef __BIG_ENDIAN
 408         ohci_ctl.s.l2c_buff_emod = 1; /* Byte swapped. */
 409         ohci_ctl.s.l2c_desc_emod = 1; /* Byte swapped. */
 410 #else
 411         ohci_ctl.s.l2c_buff_emod = 0; /* not swapped. */
 412         ohci_ctl.s.l2c_desc_emod = 0; /* not swapped. */
 413         ohci_ctl.s.inv_reg_a2 = 1;
 414 #endif
 415         cvmx_write_csr(CVMX_UCTLX_OHCI_CTL(0), ohci_ctl.u64);
 416
 417         octeon2_usb_clocks_stop();
 418 }
 419
 420 static int __init octeon_ohci_device_init(void)
 421 {
 422         struct platform_device *pd;
 423         struct device_node *ohci_node;
 424         int ret = 0;
 425
 426         ohci_node = of_find_node_by_name(NULL, "ohci");
 427         if (!ohci_node)
 428                 return 0;
 429
 430         pd = of_find_device_by_node(ohci_node);
 431         if (!pd)
 432                 return 0;
 433
 434         pd->dev.platform_data = &octeon_ohci_pdata;
 435         octeon_ohci_hw_start(&pd->dev);
 436
 437         return ret;
 438 }
 439 device_initcall(octeon_ohci_device_init);
 440
 441 #endif /* CONFIG_USB */
 442
 443
 444 static struct of_device_id __initdata octeon_ids[] = {
 445         { .compatible = "simple-bus", },
 446         { .compatible = "cavium,octeon-6335-uctl", },
 447         { .compatible = "cavium,octeon-5750-usbn", },
 448         { .compatible = "cavium,octeon-3860-bootbus", },
 449         { .compatible = "cavium,mdio-mux", },
 450         { .compatible = "gpio-leds", },
 451         { .compatible = "cavium,octeon-7130-usb-uctl", },
 452         {},
 453 };
 454
 455 static bool __init octeon_has_88e1145(void)
 456 {
 457         return !OCTEON_IS_MODEL(OCTEON_CN52XX) &&
 458                !OCTEON_IS_MODEL(OCTEON_CN6XXX) &&
 459                !OCTEON_IS_MODEL(OCTEON_CN56XX);
 460 }
 461
 462 static void __init octeon_fdt_set_phy(int eth, int phy_addr)
 463 {
 464         const __be32 *phy_handle;
 465         const __be32 *alt_phy_handle;
 466         const __be32 *reg;
 467         u32 phandle;
 468         int phy;
 469         int alt_phy;
 470         const char *p;
 471         int current_len;
 472         char new_name[20];
 473
 474         phy_handle = fdt_getprop(initial_boot_params, eth, "phy-handle", NULL);
 475         if (!phy_handle)
 476                 return;
 477
 478         phandle = be32_to_cpup(phy_handle);
 479         phy = fdt_node_offset_by_phandle(initial_boot_params, phandle);
 480
 481         alt_phy_handle = fdt_getprop(initial_boot_params, eth, "cavium,alt-phy-handle", NULL);
 482         if (alt_phy_handle) {
 483                 u32 alt_phandle = be32_to_cpup(alt_phy_handle);
 484                 alt_phy = fdt_node_offset_by_phandle(initial_boot_params, alt_phandle);
 485         } else {
 486                 alt_phy = -1;
 487         }
 488
 489         if (phy_addr < 0 || phy < 0) {
 490                 /* Delete the PHY things */
 491                 fdt_nop_property(initial_boot_params, eth, "phy-handle");
 492                 /* This one may fail */
 493                 fdt_nop_property(initial_boot_params, eth, "cavium,alt-phy-handle");
 494                 if (phy >= 0)
 495                         fdt_nop_node(initial_boot_params, phy);
 496                 if (alt_phy >= 0)
 497                         fdt_nop_node(initial_boot_params, alt_phy);
 498                 return;
 499         }
 500
 501         if (phy_addr >= 256 && alt_phy > 0) {
 502                 const struct fdt_property *phy_prop;
 503                 struct fdt_property *alt_prop;
 504                 u32 phy_handle_name;
 505
 506                 /* Use the alt phy node instead.*/
 507                 phy_prop = fdt_get_property(initial_boot_params, eth, "phy-handle", NULL);
 508                 phy_handle_name = phy_prop->nameoff;
 509                 fdt_nop_node(initial_boot_params, phy);
 510                 fdt_nop_property(initial_boot_params, eth, "phy-handle");
 511                 alt_prop = fdt_get_property_w(initial_boot_params, eth, "cavium,alt-phy-handle", NULL);
 512                 alt_prop->nameoff = phy_handle_name;
 513                 phy = alt_phy;
 514         }
 515
 516         phy_addr &= 0xff;
 517
 518         if (octeon_has_88e1145()) {
 519                 fdt_nop_property(initial_boot_params, phy, "marvell,reg-init");
 520                 memset(new_name, 0, sizeof(new_name));
 521                 strcpy(new_name, "marvell,88e1145");
 522                 p = fdt_getprop(initial_boot_params, phy, "compatible",
 523                                 &current_len);
 524                 if (p && current_len >= strlen(new_name))
 525                         fdt_setprop_inplace(initial_boot_params, phy,
 526                                         "compatible", new_name, current_len);
 527         }
 528
 529         reg = fdt_getprop(initial_boot_params, phy, "reg", NULL);
 530         if (phy_addr == be32_to_cpup(reg))
 531                 return;
 532
 533         fdt_setprop_inplace_cell(initial_boot_params, phy, "reg", phy_addr);
 534
 535         snprintf(new_name, sizeof(new_name), "ethernet-phy@%x", phy_addr);
 536
 537         p = fdt_get_name(initial_boot_params, phy, &current_len);
 538         if (p && current_len == strlen(new_name))
 539                 fdt_set_name(initial_boot_params, phy, new_name);
 540         else
 541                 pr_err("Error: could not rename ethernet phy: <%s>", p);
 542 }
 543
 544 static void __init octeon_fdt_set_mac_addr(int n, u64 *pmac)
 545 {
 546         const u8 *old_mac;
 547         int old_len;
 548         u8 new_mac[6];
 549         u64 mac = *pmac;
 550         int r;
 551
 552         old_mac = fdt_getprop(initial_boot_params, n, "local-mac-address",
 553                               &old_len);
 554         if (!old_mac || old_len != 6 || is_valid_ether_addr(old_mac))
 555                 return;
 556
 557         new_mac[0] = (mac >> 40) & 0xff;
 558         new_mac[1] = (mac >> 32) & 0xff;
 559         new_mac[2] = (mac >> 24) & 0xff;
 560         new_mac[3] = (mac >> 16) & 0xff;
 561         new_mac[4] = (mac >> 8) & 0xff;
 562         new_mac[5] = mac & 0xff;
 563
 564         r = fdt_setprop_inplace(initial_boot_params, n, "local-mac-address",
 565                                 new_mac, sizeof(new_mac));
 566
 567         if (r) {
 568                 pr_err("Setting \"local-mac-address\" failed %d", r);
 569                 return;
 570         }
 571         *pmac = mac + 1;
 572 }
 573
 574 static void __init octeon_fdt_rm_ethernet(int node)
 575 {
 576         const __be32 *phy_handle;
 577
 578         phy_handle = fdt_getprop(initial_boot_params, node, "phy-handle", NULL);
 579         if (phy_handle) {
 580                 u32 ph = be32_to_cpup(phy_handle);
 581                 int p = fdt_node_offset_by_phandle(initial_boot_params, ph);
 582                 if (p >= 0)
 583                         fdt_nop_node(initial_boot_params, p);
 584         }
 585         fdt_nop_node(initial_boot_params, node);
 586 }
 587
 588 static void __init octeon_fdt_pip_port(int iface, int i, int p, int max)
 589 {
 590         char name_buffer[20];
 591         int eth;
 592         int phy_addr;
 593         int ipd_port;
 594
 595         snprintf(name_buffer, sizeof(name_buffer), "ethernet@%x", p);
 596         eth = fdt_subnode_offset(initial_boot_params, iface, name_buffer);
 597         if (eth < 0)
 598                 return;
 599         if (p > max) {
 600                 pr_debug("Deleting port %x:%x\n", i, p);
 601                 octeon_fdt_rm_ethernet(eth);
 602                 return;
 603         }
 604         if (OCTEON_IS_MODEL(OCTEON_CN68XX))
 605                 ipd_port = (0x100 * i) + (0x10 * p) + 0x800;
 606         else
 607                 ipd_port = 16 * i + p;
 608
 609         phy_addr = cvmx_helper_board_get_mii_address(ipd_port);
 610         octeon_fdt_set_phy(eth, phy_addr);
 611 }
 612
 613 static void __init octeon_fdt_pip_iface(int pip, int idx)
 614 {
 615         char name_buffer[20];
 616         int iface;
 617         int p;
 618         int count = 0;
 619
 620         snprintf(name_buffer, sizeof(name_buffer), "interface@%d", idx);
 621         iface = fdt_subnode_offset(initial_boot_params, pip, name_buffer);
 622         if (iface < 0)
 623                 return;
 624
 625         if (cvmx_helper_interface_enumerate(idx) == 0)
 626                 count = cvmx_helper_ports_on_interface(idx);
 627
 628         for (p = 0; p < 16; p++)
 629                 octeon_fdt_pip_port(iface, idx, p, count - 1);
 630 }
 631
 632 void __init octeon_fill_mac_addresses(void)
 633 {
 634         const char *alias_prop;
 635         char name_buffer[20];
 636         u64 mac_addr_base;
 637         int aliases;
 638         int pip;
 639         int i;
 640
 641         aliases = fdt_path_offset(initial_boot_params, "/aliases");
 642         if (aliases < 0)
 643                 return;
 644
 645         mac_addr_base =
 646                 ((octeon_bootinfo->mac_addr_base[0] & 0xffull)) << 40 |
 647                 ((octeon_bootinfo->mac_addr_base[1] & 0xffull)) << 32 |
 648                 ((octeon_bootinfo->mac_addr_base[2] & 0xffull)) << 24 |
 649                 ((octeon_bootinfo->mac_addr_base[3] & 0xffull)) << 16 |
 650                 ((octeon_bootinfo->mac_addr_base[4] & 0xffull)) << 8 |
 651                  (octeon_bootinfo->mac_addr_base[5] & 0xffull);
 652
 653         for (i = 0; i < 2; i++) {
 654                 int mgmt;
 655
 656                 snprintf(name_buffer, sizeof(name_buffer), "mix%d", i);
 657                 alias_prop = fdt_getprop(initial_boot_params, aliases,
 658                                          name_buffer, NULL);
 659                 if (!alias_prop)
 660                         continue;
 661                 mgmt = fdt_path_offset(initial_boot_params, alias_prop);
 662                 if (mgmt < 0)
 663                         continue;
 664                 octeon_fdt_set_mac_addr(mgmt, &mac_addr_base);
 665         }
 666
 667         alias_prop = fdt_getprop(initial_boot_params, aliases, "pip", NULL);
 668         if (!alias_prop)
 669                 return;
 670
 671         pip = fdt_path_offset(initial_boot_params, alias_prop);
 672         if (pip < 0)
 673                 return;
 674
 675         for (i = 0; i <= 4; i++) {
 676                 int iface;
 677                 int p;
 678
 679                 snprintf(name_buffer, sizeof(name_buffer), "interface@%d", i);
 680                 iface = fdt_subnode_offset(initial_boot_params, pip,
 681                                            name_buffer);
 682                 if (iface < 0)
 683                         continue;
 684                 for (p = 0; p < 16; p++) {
 685                         int eth;
 686
 687                         snprintf(name_buffer, sizeof(name_buffer),
 688                                  "ethernet@%x", p);
 689                         eth = fdt_subnode_offset(initial_boot_params, iface,
 690                                                  name_buffer);
 691                         if (eth < 0)
 692                                 continue;
 693                         octeon_fdt_set_mac_addr(eth, &mac_addr_base);
 694                 }
 695         }
 696 }
 697
 698 int __init octeon_prune_device_tree(void)
 699 {
 700         int i, max_port, uart_mask;
 701         const char *pip_path;
 702         const char *alias_prop;
 703         char name_buffer[20];
 704         int aliases;
 705
 706         if (fdt_check_header(initial_boot_params))
 707                 panic("Corrupt Device Tree.");
 708
 709         WARN(octeon_bootinfo->board_type == CVMX_BOARD_TYPE_CUST_DSR1000N,
 710              "Built-in DTB booting is deprecated on %s. Please switch to use appended DTB.",
 711              cvmx_board_type_to_string(octeon_bootinfo->board_type));
 712
 713         aliases = fdt_path_offset(initial_boot_params, "/aliases");
 714         if (aliases < 0) {
 715                 pr_err("Error: No /aliases node in device tree.");
 716                 return -EINVAL;
 717         }
 718
 719         if (OCTEON_IS_MODEL(OCTEON_CN52XX) || OCTEON_IS_MODEL(OCTEON_CN63XX))
 720                 max_port = 2;
 721         else if (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN68XX))
 722                 max_port = 1;
 723         else
 724                 max_port = 0;
 725
 726         if (octeon_bootinfo->board_type == CVMX_BOARD_TYPE_NIC10E)
 727                 max_port = 0;
 728
 729         for (i = 0; i < 2; i++) {
 730                 int mgmt;
 731                 snprintf(name_buffer, sizeof(name_buffer),
 732                          "mix%d", i);
 733                 alias_prop = fdt_getprop(initial_boot_params, aliases,
 734                                         name_buffer, NULL);
 735                 if (alias_prop) {
 736                         mgmt = fdt_path_offset(initial_boot_params, alias_prop);
 737                         if (mgmt < 0)
 738                                 continue;
 739                         if (i >= max_port) {
 740                                 pr_debug("Deleting mix%d\n", i);
 741                                 octeon_fdt_rm_ethernet(mgmt);
 742                                 fdt_nop_property(initial_boot_params, aliases,
 743                                                  name_buffer);
 744                         } else {
 745                                 int phy_addr = cvmx_helper_board_get_mii_address(CVMX_HELPER_BOARD_MGMT_IPD_PORT + i);
 746                                 octeon_fdt_set_phy(mgmt, phy_addr);
 747                         }
 748                 }
 749         }
 750
 751         pip_path = fdt_getprop(initial_boot_params, aliases, "pip", NULL);
 752         if (pip_path) {
 753                 int pip = fdt_path_offset(initial_boot_params, pip_path);
 754                 if (pip  >= 0)
 755                         for (i = 0; i <= 4; i++)
 756                                 octeon_fdt_pip_iface(pip, i);
 757         }
 758
 759         /* I2C */
 760         if (OCTEON_IS_MODEL(OCTEON_CN52XX) ||
 761             OCTEON_IS_MODEL(OCTEON_CN63XX) ||
 762             OCTEON_IS_MODEL(OCTEON_CN68XX) ||
 763             OCTEON_IS_MODEL(OCTEON_CN56XX))
 764                 max_port = 2;
 765         else
 766                 max_port = 1;
 767
 768         for (i = 0; i < 2; i++) {
 769                 int i2c;
 770                 snprintf(name_buffer, sizeof(name_buffer),
 771                          "twsi%d", i);
 772                 alias_prop = fdt_getprop(initial_boot_params, aliases,
 773                                         name_buffer, NULL);
 774
 775                 if (alias_prop) {
 776                         i2c = fdt_path_offset(initial_boot_params, alias_prop);
 777                         if (i2c < 0)
 778                                 continue;
 779                         if (i >= max_port) {
 780                                 pr_debug("Deleting twsi%d\n", i);
 781                                 fdt_nop_node(initial_boot_params, i2c);
 782                                 fdt_nop_property(initial_boot_params, aliases,
 783                                                  name_buffer);
 784                         }
 785                 }
 786         }
 787
 788         /* SMI/MDIO */
 789         if (OCTEON_IS_MODEL(OCTEON_CN68XX))
 790                 max_port = 4;
 791         else if (OCTEON_IS_MODEL(OCTEON_CN52XX) ||
 792                  OCTEON_IS_MODEL(OCTEON_CN63XX) ||
 793                  OCTEON_IS_MODEL(OCTEON_CN56XX))
 794                 max_port = 2;
 795         else
 796                 max_port = 1;
 797
 798         for (i = 0; i < 2; i++) {
 799                 int i2c;
 800                 snprintf(name_buffer, sizeof(name_buffer),
 801                          "smi%d", i);
 802                 alias_prop = fdt_getprop(initial_boot_params, aliases,
 803                                         name_buffer, NULL);
 804
 805                 if (alias_prop) {
 806                         i2c = fdt_path_offset(initial_boot_params, alias_prop);
 807                         if (i2c < 0)
 808                                 continue;
 809                         if (i >= max_port) {
 810                                 pr_debug("Deleting smi%d\n", i);
 811                                 fdt_nop_node(initial_boot_params, i2c);
 812                                 fdt_nop_property(initial_boot_params, aliases,
 813                                                  name_buffer);
 814                         }
 815                 }
 816         }
 817
 818         /* Serial */
 819         uart_mask = 3;
 820
 821         /* Right now CN52XX is the only chip with a third uart */
 822         if (OCTEON_IS_MODEL(OCTEON_CN52XX))
 823                 uart_mask |= 4; /* uart2 */
 824
 825         for (i = 0; i < 3; i++) {
 826                 int uart;
 827                 snprintf(name_buffer, sizeof(name_buffer),
 828                          "uart%d", i);
 829                 alias_prop = fdt_getprop(initial_boot_params, aliases,
 830                                         name_buffer, NULL);
 831
 832                 if (alias_prop) {
 833                         uart = fdt_path_offset(initial_boot_params, alias_prop);
 834                         if (uart_mask & (1 << i)) {
 835                                 __be32 f;
 836
 837                                 f = cpu_to_be32(octeon_get_io_clock_rate());
 838                                 fdt_setprop_inplace(initial_boot_params,
 839                                                     uart, "clock-frequency",
 840                                                     &f, sizeof(f));
 841                                 continue;
 842                         }
 843                         pr_debug("Deleting uart%d\n", i);
 844                         fdt_nop_node(initial_boot_params, uart);
 845                         fdt_nop_property(initial_boot_params, aliases,
 846                                          name_buffer);
 847                 }
 848         }
 849
 850         /* Compact Flash */
 851         alias_prop = fdt_getprop(initial_boot_params, aliases,
 852                                  "cf0", NULL);
 853         if (alias_prop) {
 854                 union cvmx_mio_boot_reg_cfgx mio_boot_reg_cfg;
 855                 unsigned long base_ptr, region_base, region_size;
 856                 unsigned long region1_base = 0;
 857                 unsigned long region1_size = 0;
 858                 int cs, bootbus;
 859                 bool is_16bit = false;
 860                 bool is_true_ide = false;
 861                 __be32 new_reg[6];
 862                 __be32 *ranges;
 863                 int len;
 864
 865                 int cf = fdt_path_offset(initial_boot_params, alias_prop);
 866                 base_ptr = 0;
 867                 if (octeon_bootinfo->major_version == 1
 868                         && octeon_bootinfo->minor_version >= 1) {
 869                         if (octeon_bootinfo->compact_flash_common_base_addr)
 870                                 base_ptr = octeon_bootinfo->compact_flash_common_base_addr;
 871                 } else {
 872                         base_ptr = 0x1d000800;
 873                 }
 874
 875                 if (!base_ptr)
 876                         goto no_cf;
 877
 878                 /* Find CS0 region. */
 879                 for (cs = 0; cs < 8; cs++) {
 880                         mio_boot_reg_cfg.u64 = cvmx_read_csr(CVMX_MIO_BOOT_REG_CFGX(cs));
 881                         region_base = mio_boot_reg_cfg.s.base << 16;
 882                         region_size = (mio_boot_reg_cfg.s.size + 1) << 16;
 883                         if (mio_boot_reg_cfg.s.en && base_ptr >= region_base
 884                                 && base_ptr < region_base + region_size) {
 885                                 is_16bit = mio_boot_reg_cfg.s.width;
 886                                 break;
 887                         }
 888                 }
 889                 if (cs >= 7) {
 890                         /* cs and cs + 1 are CS0 and CS1, both must be less than 8. */
 891                         goto no_cf;
 892                 }
 893
 894                 if (!(base_ptr & 0xfffful)) {
 895                         /*
 896                          * Boot loader signals availability of DMA (true_ide
 897                          * mode) by setting low order bits of base_ptr to
 898                          * zero.
 899                          */
 900
 901                         /* Asume that CS1 immediately follows. */
 902                         mio_boot_reg_cfg.u64 =
 903                                 cvmx_read_csr(CVMX_MIO_BOOT_REG_CFGX(cs + 1));
 904                         region1_base = mio_boot_reg_cfg.s.base << 16;
 905                         region1_size = (mio_boot_reg_cfg.s.size + 1) << 16;
 906                         if (!mio_boot_reg_cfg.s.en)
 907                                 goto no_cf;
 908                         is_true_ide = true;
 909
 910                 } else {
 911                         fdt_nop_property(initial_boot_params, cf, "cavium,true-ide");
 912                         fdt_nop_property(initial_boot_params, cf, "cavium,dma-engine-handle");
 913                         if (!is_16bit) {
 914                                 __be32 width = cpu_to_be32(8);
 915                                 fdt_setprop_inplace(initial_boot_params, cf,
 916                                                 "cavium,bus-width", &width, sizeof(width));
 917                         }
 918                 }
 919                 new_reg[0] = cpu_to_be32(cs);
 920                 new_reg[1] = cpu_to_be32(0);
 921                 new_reg[2] = cpu_to_be32(0x10000);
 922                 new_reg[3] = cpu_to_be32(cs + 1);
 923                 new_reg[4] = cpu_to_be32(0);
 924                 new_reg[5] = cpu_to_be32(0x10000);
 925                 fdt_setprop_inplace(initial_boot_params, cf,
 926                                     "reg",  new_reg, sizeof(new_reg));
 927
 928                 bootbus = fdt_parent_offset(initial_boot_params, cf);
 929                 if (bootbus < 0)
 930                         goto no_cf;
 931                 ranges = fdt_getprop_w(initial_boot_params, bootbus, "ranges", &len);
 932                 if (!ranges || len < (5 * 8 * sizeof(__be32)))
 933                         goto no_cf;
 934
 935                 ranges[(cs * 5) + 2] = cpu_to_be32(region_base >> 32);
 936                 ranges[(cs * 5) + 3] = cpu_to_be32(region_base & 0xffffffff);
 937                 ranges[(cs * 5) + 4] = cpu_to_be32(region_size);
 938                 if (is_true_ide) {
 939                         cs++;
 940                         ranges[(cs * 5) + 2] = cpu_to_be32(region1_base >> 32);
 941                         ranges[(cs * 5) + 3] = cpu_to_be32(region1_base & 0xffffffff);
 942                         ranges[(cs * 5) + 4] = cpu_to_be32(region1_size);
 943                 }
 944                 goto end_cf;
 945 no_cf:
 946                 fdt_nop_node(initial_boot_params, cf);
 947
 948 end_cf:
 949                 ;
 950         }
 951
 952         /* 8 char LED */
 953         alias_prop = fdt_getprop(initial_boot_params, aliases,
 954                                  "led0", NULL);
 955         if (alias_prop) {
 956                 union cvmx_mio_boot_reg_cfgx mio_boot_reg_cfg;
 957                 unsigned long base_ptr, region_base, region_size;
 958                 int cs, bootbus;
 959                 __be32 new_reg[6];
 960                 __be32 *ranges;
 961                 int len;
 962                 int led = fdt_path_offset(initial_boot_params, alias_prop);
 963
 964                 base_ptr = octeon_bootinfo->led_display_base_addr;
 965                 if (base_ptr == 0)
 966                         goto no_led;
 967                 /* Find CS0 region. */
 968                 for (cs = 0; cs < 8; cs++) {
 969                         mio_boot_reg_cfg.u64 = cvmx_read_csr(CVMX_MIO_BOOT_REG_CFGX(cs));
 970                         region_base = mio_boot_reg_cfg.s.base << 16;
 971                         region_size = (mio_boot_reg_cfg.s.size + 1) << 16;
 972                         if (mio_boot_reg_cfg.s.en && base_ptr >= region_base
 973                                 && base_ptr < region_base + region_size)
 974                                 break;
 975                 }
 976
 977                 if (cs > 7)
 978                         goto no_led;
 979
 980                 new_reg[0] = cpu_to_be32(cs);
 981                 new_reg[1] = cpu_to_be32(0x20);
 982                 new_reg[2] = cpu_to_be32(0x20);
 983                 new_reg[3] = cpu_to_be32(cs);
 984                 new_reg[4] = cpu_to_be32(0);
 985                 new_reg[5] = cpu_to_be32(0x20);
 986                 fdt_setprop_inplace(initial_boot_params, led,
 987                                     "reg",  new_reg, sizeof(new_reg));
 988
 989                 bootbus = fdt_parent_offset(initial_boot_params, led);
 990                 if (bootbus < 0)
 991                         goto no_led;
 992                 ranges = fdt_getprop_w(initial_boot_params, bootbus, "ranges", &len);
 993                 if (!ranges || len < (5 * 8 * sizeof(__be32)))
 994                         goto no_led;
 995
 996                 ranges[(cs * 5) + 2] = cpu_to_be32(region_base >> 32);
 997                 ranges[(cs * 5) + 3] = cpu_to_be32(region_base & 0xffffffff);
 998                 ranges[(cs * 5) + 4] = cpu_to_be32(region_size);
 999                 goto end_led;
1000
1001 no_led:
1002                 fdt_nop_node(initial_boot_params, led);
1003 end_led:
1004                 ;
1005         }
1006
1007         /* OHCI/UHCI USB */
1008         alias_prop = fdt_getprop(initial_boot_params, aliases,
1009                                  "uctl", NULL);
1010         if (alias_prop) {
1011                 int uctl = fdt_path_offset(initial_boot_params, alias_prop);
1012
1013                 if (uctl >= 0 && (!OCTEON_IS_MODEL(OCTEON_CN6XXX) ||
1014                                   octeon_bootinfo->board_type == CVMX_BOARD_TYPE_NIC2E)) {
1015                         pr_debug("Deleting uctl\n");
1016                         fdt_nop_node(initial_boot_params, uctl);
1017                         fdt_nop_property(initial_boot_params, aliases, "uctl");
1018                 } else if (octeon_bootinfo->board_type == CVMX_BOARD_TYPE_NIC10E ||
1019                            octeon_bootinfo->board_type == CVMX_BOARD_TYPE_NIC4E) {
1020                         /* Missing "refclk-type" defaults to crystal. */
1021                         fdt_nop_property(initial_boot_params, uctl, "refclk-type");
1022                 }
1023         }
1024
1025         /* DWC2 USB */
1026         alias_prop = fdt_getprop(initial_boot_params, aliases,
1027                                  "usbn", NULL);
1028         if (alias_prop) {
1029                 int usbn = fdt_path_offset(initial_boot_params, alias_prop);
1030
1031                 if (usbn >= 0 && (current_cpu_type() == CPU_CAVIUM_OCTEON2 ||
1032                                   !octeon_has_feature(OCTEON_FEATURE_USB))) {
1033                         pr_debug("Deleting usbn\n");
1034                         fdt_nop_node(initial_boot_params, usbn);
1035                         fdt_nop_property(initial_boot_params, aliases, "usbn");
1036                 } else  {
1037                         __be32 new_f[1];
1038                         enum cvmx_helper_board_usb_clock_types c;
1039                         c = __cvmx_helper_board_usb_get_clock_type();
1040                         switch (c) {
1041                         case USB_CLOCK_TYPE_REF_48:
1042                                 new_f[0] = cpu_to_be32(48000000);
1043                                 fdt_setprop_inplace(initial_boot_params, usbn,
1044                                                     "refclk-frequency",  new_f, sizeof(new_f));
1045                                 /* Fall through ...*/
1046                         case USB_CLOCK_TYPE_REF_12:
1047                                 /* Missing "refclk-type" defaults to external. */
1048                                 fdt_nop_property(initial_boot_params, usbn, "refclk-type");
1049                                 break;
1050                         default:
1051                                 break;
1052                         }
1053                 }
1054         }
1055
1056         return 0;
1057 }
1058
1059 static int __init octeon_publish_devices(void)
1060 {
1061         return of_platform_bus_probe(NULL, octeon_ids, NULL);
1062 }
1063 arch_initcall(octeon_publish_devices);