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) 2004-2011 Cavium Networks
   7  * Copyright (C) 2008 Wind River Systems
   8  */
   9
  10 #include <linux/init.h>
  11 #include <linux/irq.h>
  12 #include <linux/i2c.h>
  13 #include <linux/usb.h>
  14 #include <linux/dma-mapping.h>
  15 #include <linux/module.h>
  16 #include <linux/slab.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/of_platform.h>
  19 #include <linux/of_fdt.h>
  20 #include <linux/libfdt.h>
  21
  22 #include <asm/octeon/octeon.h>
  23 #include <asm/octeon/cvmx-rnm-defs.h>
  24 #include <asm/octeon/cvmx-helper.h>
  25 #include <asm/octeon/cvmx-helper-board.h>
  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 int __init octeon_ehci_device_init(void)
  72 {
  73         struct platform_device *pd;
  74         int ret = 0;
  75
  76         struct resource usb_resources[] = {
  77                 {
  78                         .flags  = IORESOURCE_MEM,
  79                 }, {
  80                         .flags  = IORESOURCE_IRQ,
  81                 }
  82         };
  83
  84         /* Only Octeon2 has ehci/ohci */
  85         if (!OCTEON_IS_MODEL(OCTEON_CN63XX))
  86                 return 0;
  87
  88         if (octeon_is_simulation() || usb_disabled())
  89                 return 0; /* No USB in the simulator. */
  90
  91         pd = platform_device_alloc("octeon-ehci", 0);
  92         if (!pd) {
  93                 ret = -ENOMEM;
  94                 goto out;
  95         }
  96
  97         usb_resources[0].start = 0x00016F0000000000ULL;
  98         usb_resources[0].end = usb_resources[0].start + 0x100;
  99
 100         usb_resources[1].start = OCTEON_IRQ_USB0;
 101         usb_resources[1].end = OCTEON_IRQ_USB0;
 102
 103         ret = platform_device_add_resources(pd, usb_resources,
 104                                             ARRAY_SIZE(usb_resources));
 105         if (ret)
 106                 goto fail;
 107
 108         ret = platform_device_add(pd);
 109         if (ret)
 110                 goto fail;
 111
 112         return ret;
 113 fail:
 114         platform_device_put(pd);
 115 out:
 116         return ret;
 117 }
 118 device_initcall(octeon_ehci_device_init);
 119
 120 static int __init octeon_ohci_device_init(void)
 121 {
 122         struct platform_device *pd;
 123         int ret = 0;
 124
 125         struct resource usb_resources[] = {
 126                 {
 127                         .flags  = IORESOURCE_MEM,
 128                 }, {
 129                         .flags  = IORESOURCE_IRQ,
 130                 }
 131         };
 132
 133         /* Only Octeon2 has ehci/ohci */
 134         if (!OCTEON_IS_MODEL(OCTEON_CN63XX))
 135                 return 0;
 136
 137         if (octeon_is_simulation() || usb_disabled())
 138                 return 0; /* No USB in the simulator. */
 139
 140         pd = platform_device_alloc("octeon-ohci", 0);
 141         if (!pd) {
 142                 ret = -ENOMEM;
 143                 goto out;
 144         }
 145
 146         usb_resources[0].start = 0x00016F0000000400ULL;
 147         usb_resources[0].end = usb_resources[0].start + 0x100;
 148
 149         usb_resources[1].start = OCTEON_IRQ_USB0;
 150         usb_resources[1].end = OCTEON_IRQ_USB0;
 151
 152         ret = platform_device_add_resources(pd, usb_resources,
 153                                             ARRAY_SIZE(usb_resources));
 154         if (ret)
 155                 goto fail;
 156
 157         ret = platform_device_add(pd);
 158         if (ret)
 159                 goto fail;
 160
 161         return ret;
 162 fail:
 163         platform_device_put(pd);
 164 out:
 165         return ret;
 166 }
 167 device_initcall(octeon_ohci_device_init);
 168
 169 #endif /* CONFIG_USB */
 170
 171 static struct of_device_id __initdata octeon_ids[] = {
 172         { .compatible = "simple-bus", },
 173         { .compatible = "cavium,octeon-6335-uctl", },
 174         { .compatible = "cavium,octeon-3860-bootbus", },
 175         { .compatible = "cavium,mdio-mux", },
 176         { .compatible = "gpio-leds", },
 177         {},
 178 };
 179
 180 static bool __init octeon_has_88e1145(void)
 181 {
 182         return !OCTEON_IS_MODEL(OCTEON_CN52XX) &&
 183                !OCTEON_IS_MODEL(OCTEON_CN6XXX) &&
 184                !OCTEON_IS_MODEL(OCTEON_CN56XX);
 185 }
 186
 187 static void __init octeon_fdt_set_phy(int eth, int phy_addr)
 188 {
 189         const __be32 *phy_handle;
 190         const __be32 *alt_phy_handle;
 191         const __be32 *reg;
 192         u32 phandle;
 193         int phy;
 194         int alt_phy;
 195         const char *p;
 196         int current_len;
 197         char new_name[20];
 198
 199         phy_handle = fdt_getprop(initial_boot_params, eth, "phy-handle", NULL);
 200         if (!phy_handle)
 201                 return;
 202
 203         phandle = be32_to_cpup(phy_handle);
 204         phy = fdt_node_offset_by_phandle(initial_boot_params, phandle);
 205
 206         alt_phy_handle = fdt_getprop(initial_boot_params, eth, "cavium,alt-phy-handle", NULL);
 207         if (alt_phy_handle) {
 208                 u32 alt_phandle = be32_to_cpup(alt_phy_handle);
 209                 alt_phy = fdt_node_offset_by_phandle(initial_boot_params, alt_phandle);
 210         } else {
 211                 alt_phy = -1;
 212         }
 213
 214         if (phy_addr < 0 || phy < 0) {
 215                 /* Delete the PHY things */
 216                 fdt_nop_property(initial_boot_params, eth, "phy-handle");
 217                 /* This one may fail */
 218                 fdt_nop_property(initial_boot_params, eth, "cavium,alt-phy-handle");
 219                 if (phy >= 0)
 220                         fdt_nop_node(initial_boot_params, phy);
 221                 if (alt_phy >= 0)
 222                         fdt_nop_node(initial_boot_params, alt_phy);
 223                 return;
 224         }
 225
 226         if (phy_addr >= 256 && alt_phy > 0) {
 227                 const struct fdt_property *phy_prop;
 228                 struct fdt_property *alt_prop;
 229                 u32 phy_handle_name;
 230
 231                 /* Use the alt phy node instead.*/
 232                 phy_prop = fdt_get_property(initial_boot_params, eth, "phy-handle", NULL);
 233                 phy_handle_name = phy_prop->nameoff;
 234                 fdt_nop_node(initial_boot_params, phy);
 235                 fdt_nop_property(initial_boot_params, eth, "phy-handle");
 236                 alt_prop = fdt_get_property_w(initial_boot_params, eth, "cavium,alt-phy-handle", NULL);
 237                 alt_prop->nameoff = phy_handle_name;
 238                 phy = alt_phy;
 239         }
 240
 241         phy_addr &= 0xff;
 242
 243         if (octeon_has_88e1145()) {
 244                 fdt_nop_property(initial_boot_params, phy, "marvell,reg-init");
 245                 memset(new_name, 0, sizeof(new_name));
 246                 strcpy(new_name, "marvell,88e1145");
 247                 p = fdt_getprop(initial_boot_params, phy, "compatible",
 248                                 &current_len);
 249                 if (p && current_len >= strlen(new_name))
 250                         fdt_setprop_inplace(initial_boot_params, phy,
 251                                         "compatible", new_name, current_len);
 252         }
 253
 254         reg = fdt_getprop(initial_boot_params, phy, "reg", NULL);
 255         if (phy_addr == be32_to_cpup(reg))
 256                 return;
 257
 258         fdt_setprop_inplace_cell(initial_boot_params, phy, "reg", phy_addr);
 259
 260         snprintf(new_name, sizeof(new_name), "ethernet-phy@%x", phy_addr);
 261
 262         p = fdt_get_name(initial_boot_params, phy, &current_len);
 263         if (p && current_len == strlen(new_name))
 264                 fdt_set_name(initial_boot_params, phy, new_name);
 265         else
 266                 pr_err("Error: could not rename ethernet phy: <%s>", p);
 267 }
 268
 269 static void __init octeon_fdt_set_mac_addr(int n, u64 *pmac)
 270 {
 271         u8 new_mac[6];
 272         u64 mac = *pmac;
 273         int r;
 274
 275         new_mac[0] = (mac >> 40) & 0xff;
 276         new_mac[1] = (mac >> 32) & 0xff;
 277         new_mac[2] = (mac >> 24) & 0xff;
 278         new_mac[3] = (mac >> 16) & 0xff;
 279         new_mac[4] = (mac >> 8) & 0xff;
 280         new_mac[5] = mac & 0xff;
 281
 282         r = fdt_setprop_inplace(initial_boot_params, n, "local-mac-address",
 283                                 new_mac, sizeof(new_mac));
 284
 285         if (r) {
 286                 pr_err("Setting \"local-mac-address\" failed %d", r);
 287                 return;
 288         }
 289         *pmac = mac + 1;
 290 }
 291
 292 static void __init octeon_fdt_rm_ethernet(int node)
 293 {
 294         const __be32 *phy_handle;
 295
 296         phy_handle = fdt_getprop(initial_boot_params, node, "phy-handle", NULL);
 297         if (phy_handle) {
 298                 u32 ph = be32_to_cpup(phy_handle);
 299                 int p = fdt_node_offset_by_phandle(initial_boot_params, ph);
 300                 if (p >= 0)
 301                         fdt_nop_node(initial_boot_params, p);
 302         }
 303         fdt_nop_node(initial_boot_params, node);
 304 }
 305
 306 static void __init octeon_fdt_pip_port(int iface, int i, int p, int max, u64 *pmac)
 307 {
 308         char name_buffer[20];
 309         int eth;
 310         int phy_addr;
 311         int ipd_port;
 312
 313         snprintf(name_buffer, sizeof(name_buffer), "ethernet@%x", p);
 314         eth = fdt_subnode_offset(initial_boot_params, iface, name_buffer);
 315         if (eth < 0)
 316                 return;
 317         if (p > max) {
 318                 pr_debug("Deleting port %x:%x\n", i, p);
 319                 octeon_fdt_rm_ethernet(eth);
 320                 return;
 321         }
 322         if (OCTEON_IS_MODEL(OCTEON_CN68XX))
 323                 ipd_port = (0x100 * i) + (0x10 * p) + 0x800;
 324         else
 325                 ipd_port = 16 * i + p;
 326
 327         phy_addr = cvmx_helper_board_get_mii_address(ipd_port);
 328         octeon_fdt_set_phy(eth, phy_addr);
 329         octeon_fdt_set_mac_addr(eth, pmac);
 330 }
 331
 332 static void __init octeon_fdt_pip_iface(int pip, int idx, u64 *pmac)
 333 {
 334         char name_buffer[20];
 335         int iface;
 336         int p;
 337         int count;
 338
 339         count = cvmx_helper_interface_enumerate(idx);
 340
 341         snprintf(name_buffer, sizeof(name_buffer), "interface@%d", idx);
 342         iface = fdt_subnode_offset(initial_boot_params, pip, name_buffer);
 343         if (iface < 0)
 344                 return;
 345
 346         for (p = 0; p < 16; p++)
 347                 octeon_fdt_pip_port(iface, idx, p, count - 1, pmac);
 348 }
 349
 350 int __init octeon_prune_device_tree(void)
 351 {
 352         int i, max_port, uart_mask;
 353         const char *pip_path;
 354         const char *alias_prop;
 355         char name_buffer[20];
 356         int aliases;
 357         u64 mac_addr_base;
 358
 359         if (fdt_check_header(initial_boot_params))
 360                 panic("Corrupt Device Tree.");
 361
 362         aliases = fdt_path_offset(initial_boot_params, "/aliases");
 363         if (aliases < 0) {
 364                 pr_err("Error: No /aliases node in device tree.");
 365                 return -EINVAL;
 366         }
 367
 368
 369         mac_addr_base =
 370                 ((octeon_bootinfo->mac_addr_base[0] & 0xffull)) << 40 |
 371                 ((octeon_bootinfo->mac_addr_base[1] & 0xffull)) << 32 |
 372                 ((octeon_bootinfo->mac_addr_base[2] & 0xffull)) << 24 |
 373                 ((octeon_bootinfo->mac_addr_base[3] & 0xffull)) << 16 |
 374                 ((octeon_bootinfo->mac_addr_base[4] & 0xffull)) << 8 |
 375                 (octeon_bootinfo->mac_addr_base[5] & 0xffull);
 376
 377         if (OCTEON_IS_MODEL(OCTEON_CN52XX) || OCTEON_IS_MODEL(OCTEON_CN63XX))
 378                 max_port = 2;
 379         else if (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN68XX))
 380                 max_port = 1;
 381         else
 382                 max_port = 0;
 383
 384         if (octeon_bootinfo->board_type == CVMX_BOARD_TYPE_NIC10E)
 385                 max_port = 0;
 386
 387         for (i = 0; i < 2; i++) {
 388                 int mgmt;
 389                 snprintf(name_buffer, sizeof(name_buffer),
 390                          "mix%d", i);
 391                 alias_prop = fdt_getprop(initial_boot_params, aliases,
 392                                         name_buffer, NULL);
 393                 if (alias_prop) {
 394                         mgmt = fdt_path_offset(initial_boot_params, alias_prop);
 395                         if (mgmt < 0)
 396                                 continue;
 397                         if (i >= max_port) {
 398                                 pr_debug("Deleting mix%d\n", i);
 399                                 octeon_fdt_rm_ethernet(mgmt);
 400                                 fdt_nop_property(initial_boot_params, aliases,
 401                                                  name_buffer);
 402                         } else {
 403                                 int phy_addr = cvmx_helper_board_get_mii_address(CVMX_HELPER_BOARD_MGMT_IPD_PORT + i);
 404                                 octeon_fdt_set_phy(mgmt, phy_addr);
 405                                 octeon_fdt_set_mac_addr(mgmt, &mac_addr_base);
 406                         }
 407                 }
 408         }
 409
 410         pip_path = fdt_getprop(initial_boot_params, aliases, "pip", NULL);
 411         if (pip_path) {
 412                 int pip = fdt_path_offset(initial_boot_params, pip_path);
 413                 if (pip  >= 0)
 414                         for (i = 0; i <= 4; i++)
 415                                 octeon_fdt_pip_iface(pip, i, &mac_addr_base);
 416         }
 417
 418         /* I2C */
 419         if (OCTEON_IS_MODEL(OCTEON_CN52XX) ||
 420             OCTEON_IS_MODEL(OCTEON_CN63XX) ||
 421             OCTEON_IS_MODEL(OCTEON_CN68XX) ||
 422             OCTEON_IS_MODEL(OCTEON_CN56XX))
 423                 max_port = 2;
 424         else
 425                 max_port = 1;
 426
 427         for (i = 0; i < 2; i++) {
 428                 int i2c;
 429                 snprintf(name_buffer, sizeof(name_buffer),
 430                          "twsi%d", i);
 431                 alias_prop = fdt_getprop(initial_boot_params, aliases,
 432                                         name_buffer, NULL);
 433
 434                 if (alias_prop) {
 435                         i2c = fdt_path_offset(initial_boot_params, alias_prop);
 436                         if (i2c < 0)
 437                                 continue;
 438                         if (i >= max_port) {
 439                                 pr_debug("Deleting twsi%d\n", i);
 440                                 fdt_nop_node(initial_boot_params, i2c);
 441                                 fdt_nop_property(initial_boot_params, aliases,
 442                                                  name_buffer);
 443                         }
 444                 }
 445         }
 446
 447         /* SMI/MDIO */
 448         if (OCTEON_IS_MODEL(OCTEON_CN68XX))
 449                 max_port = 4;
 450         else if (OCTEON_IS_MODEL(OCTEON_CN52XX) ||
 451                  OCTEON_IS_MODEL(OCTEON_CN63XX) ||
 452                  OCTEON_IS_MODEL(OCTEON_CN56XX))
 453                 max_port = 2;
 454         else
 455                 max_port = 1;
 456
 457         for (i = 0; i < 2; i++) {
 458                 int i2c;
 459                 snprintf(name_buffer, sizeof(name_buffer),
 460                          "smi%d", i);
 461                 alias_prop = fdt_getprop(initial_boot_params, aliases,
 462                                         name_buffer, NULL);
 463
 464                 if (alias_prop) {
 465                         i2c = fdt_path_offset(initial_boot_params, alias_prop);
 466                         if (i2c < 0)
 467                                 continue;
 468                         if (i >= max_port) {
 469                                 pr_debug("Deleting smi%d\n", i);
 470                                 fdt_nop_node(initial_boot_params, i2c);
 471                                 fdt_nop_property(initial_boot_params, aliases,
 472                                                  name_buffer);
 473                         }
 474                 }
 475         }
 476
 477         /* Serial */
 478         uart_mask = 3;
 479
 480         /* Right now CN52XX is the only chip with a third uart */
 481         if (OCTEON_IS_MODEL(OCTEON_CN52XX))
 482                 uart_mask |= 4; /* uart2 */
 483
 484         for (i = 0; i < 3; i++) {
 485                 int uart;
 486                 snprintf(name_buffer, sizeof(name_buffer),
 487                          "uart%d", i);
 488                 alias_prop = fdt_getprop(initial_boot_params, aliases,
 489                                         name_buffer, NULL);
 490
 491                 if (alias_prop) {
 492                         uart = fdt_path_offset(initial_boot_params, alias_prop);
 493                         if (uart_mask & (1 << i))
 494                                 continue;
 495                         pr_debug("Deleting uart%d\n", i);
 496                         fdt_nop_node(initial_boot_params, uart);
 497                         fdt_nop_property(initial_boot_params, aliases,
 498                                          name_buffer);
 499                 }
 500         }
 501
 502         /* Compact Flash */
 503         alias_prop = fdt_getprop(initial_boot_params, aliases,
 504                                  "cf0", NULL);
 505         if (alias_prop) {
 506                 union cvmx_mio_boot_reg_cfgx mio_boot_reg_cfg;
 507                 unsigned long base_ptr, region_base, region_size;
 508                 unsigned long region1_base = 0;
 509                 unsigned long region1_size = 0;
 510                 int cs, bootbus;
 511                 bool is_16bit = false;
 512                 bool is_true_ide = false;
 513                 __be32 new_reg[6];
 514                 __be32 *ranges;
 515                 int len;
 516
 517                 int cf = fdt_path_offset(initial_boot_params, alias_prop);
 518                 base_ptr = 0;
 519                 if (octeon_bootinfo->major_version == 1
 520                         && octeon_bootinfo->minor_version >= 1) {
 521                         if (octeon_bootinfo->compact_flash_common_base_addr)
 522                                 base_ptr = octeon_bootinfo->compact_flash_common_base_addr;
 523                 } else {
 524                         base_ptr = 0x1d000800;
 525                 }
 526
 527                 if (!base_ptr)
 528                         goto no_cf;
 529
 530                 /* Find CS0 region. */
 531                 for (cs = 0; cs < 8; cs++) {
 532                         mio_boot_reg_cfg.u64 = cvmx_read_csr(CVMX_MIO_BOOT_REG_CFGX(cs));
 533                         region_base = mio_boot_reg_cfg.s.base << 16;
 534                         region_size = (mio_boot_reg_cfg.s.size + 1) << 16;
 535                         if (mio_boot_reg_cfg.s.en && base_ptr >= region_base
 536                                 && base_ptr < region_base + region_size) {
 537                                 is_16bit = mio_boot_reg_cfg.s.width;
 538                                 break;
 539                         }
 540                 }
 541                 if (cs >= 7) {
 542                         /* cs and cs + 1 are CS0 and CS1, both must be less than 8. */
 543                         goto no_cf;
 544                 }
 545
 546                 if (!(base_ptr & 0xfffful)) {
 547                         /*
 548                          * Boot loader signals availability of DMA (true_ide
 549                          * mode) by setting low order bits of base_ptr to
 550                          * zero.
 551                          */
 552
 553                         /* Asume that CS1 immediately follows. */
 554                         mio_boot_reg_cfg.u64 =
 555                                 cvmx_read_csr(CVMX_MIO_BOOT_REG_CFGX(cs + 1));
 556                         region1_base = mio_boot_reg_cfg.s.base << 16;
 557                         region1_size = (mio_boot_reg_cfg.s.size + 1) << 16;
 558                         if (!mio_boot_reg_cfg.s.en)
 559                                 goto no_cf;
 560                         is_true_ide = true;
 561
 562                 } else {
 563                         fdt_nop_property(initial_boot_params, cf, "cavium,true-ide");
 564                         fdt_nop_property(initial_boot_params, cf, "cavium,dma-engine-handle");
 565                         if (!is_16bit) {
 566                                 __be32 width = cpu_to_be32(8);
 567                                 fdt_setprop_inplace(initial_boot_params, cf,
 568                                                 "cavium,bus-width", &width, sizeof(width));
 569                         }
 570                 }
 571                 new_reg[0] = cpu_to_be32(cs);
 572                 new_reg[1] = cpu_to_be32(0);
 573                 new_reg[2] = cpu_to_be32(0x10000);
 574                 new_reg[3] = cpu_to_be32(cs + 1);
 575                 new_reg[4] = cpu_to_be32(0);
 576                 new_reg[5] = cpu_to_be32(0x10000);
 577                 fdt_setprop_inplace(initial_boot_params, cf,
 578                                     "reg",  new_reg, sizeof(new_reg));
 579
 580                 bootbus = fdt_parent_offset(initial_boot_params, cf);
 581                 if (bootbus < 0)
 582                         goto no_cf;
 583                 ranges = fdt_getprop_w(initial_boot_params, bootbus, "ranges", &len);
 584                 if (!ranges || len < (5 * 8 * sizeof(__be32)))
 585                         goto no_cf;
 586
 587                 ranges[(cs * 5) + 2] = cpu_to_be32(region_base >> 32);
 588                 ranges[(cs * 5) + 3] = cpu_to_be32(region_base & 0xffffffff);
 589                 ranges[(cs * 5) + 4] = cpu_to_be32(region_size);
 590                 if (is_true_ide) {
 591                         cs++;
 592                         ranges[(cs * 5) + 2] = cpu_to_be32(region1_base >> 32);
 593                         ranges[(cs * 5) + 3] = cpu_to_be32(region1_base & 0xffffffff);
 594                         ranges[(cs * 5) + 4] = cpu_to_be32(region1_size);
 595                 }
 596                 goto end_cf;
 597 no_cf:
 598                 fdt_nop_node(initial_boot_params, cf);
 599
 600 end_cf:
 601                 ;
 602         }
 603
 604         /* 8 char LED */
 605         alias_prop = fdt_getprop(initial_boot_params, aliases,
 606                                  "led0", NULL);
 607         if (alias_prop) {
 608                 union cvmx_mio_boot_reg_cfgx mio_boot_reg_cfg;
 609                 unsigned long base_ptr, region_base, region_size;
 610                 int cs, bootbus;
 611                 __be32 new_reg[6];
 612                 __be32 *ranges;
 613                 int len;
 614                 int led = fdt_path_offset(initial_boot_params, alias_prop);
 615
 616                 base_ptr = octeon_bootinfo->led_display_base_addr;
 617                 if (base_ptr == 0)
 618                         goto no_led;
 619                 /* Find CS0 region. */
 620                 for (cs = 0; cs < 8; cs++) {
 621                         mio_boot_reg_cfg.u64 = cvmx_read_csr(CVMX_MIO_BOOT_REG_CFGX(cs));
 622                         region_base = mio_boot_reg_cfg.s.base << 16;
 623                         region_size = (mio_boot_reg_cfg.s.size + 1) << 16;
 624                         if (mio_boot_reg_cfg.s.en && base_ptr >= region_base
 625                                 && base_ptr < region_base + region_size)
 626                                 break;
 627                 }
 628
 629                 if (cs > 7)
 630                         goto no_led;
 631
 632                 new_reg[0] = cpu_to_be32(cs);
 633                 new_reg[1] = cpu_to_be32(0x20);
 634                 new_reg[2] = cpu_to_be32(0x20);
 635                 new_reg[3] = cpu_to_be32(cs);
 636                 new_reg[4] = cpu_to_be32(0);
 637                 new_reg[5] = cpu_to_be32(0x20);
 638                 fdt_setprop_inplace(initial_boot_params, led,
 639                                     "reg",  new_reg, sizeof(new_reg));
 640
 641                 bootbus = fdt_parent_offset(initial_boot_params, led);
 642                 if (bootbus < 0)
 643                         goto no_led;
 644                 ranges = fdt_getprop_w(initial_boot_params, bootbus, "ranges", &len);
 645                 if (!ranges || len < (5 * 8 * sizeof(__be32)))
 646                         goto no_led;
 647
 648                 ranges[(cs * 5) + 2] = cpu_to_be32(region_base >> 32);
 649                 ranges[(cs * 5) + 3] = cpu_to_be32(region_base & 0xffffffff);
 650                 ranges[(cs * 5) + 4] = cpu_to_be32(region_size);
 651                 goto end_led;
 652
 653 no_led:
 654                 fdt_nop_node(initial_boot_params, led);
 655 end_led:
 656                 ;
 657         }
 658
 659         /* OHCI/UHCI USB */
 660         alias_prop = fdt_getprop(initial_boot_params, aliases,
 661                                  "uctl", NULL);
 662         if (alias_prop) {
 663                 int uctl = fdt_path_offset(initial_boot_params, alias_prop);
 664
 665                 if (uctl >= 0 && (!OCTEON_IS_MODEL(OCTEON_CN6XXX) ||
 666                                   octeon_bootinfo->board_type == CVMX_BOARD_TYPE_NIC2E)) {
 667                         pr_debug("Deleting uctl\n");
 668                         fdt_nop_node(initial_boot_params, uctl);
 669                         fdt_nop_property(initial_boot_params, aliases, "uctl");
 670                 } else if (octeon_bootinfo->board_type == CVMX_BOARD_TYPE_NIC10E ||
 671                            octeon_bootinfo->board_type == CVMX_BOARD_TYPE_NIC4E) {
 672                         /* Missing "refclk-type" defaults to crystal. */
 673                         fdt_nop_property(initial_boot_params, uctl, "refclk-type");
 674                 }
 675         }
 676
 677         return 0;
 678 }
 679
 680 static int __init octeon_publish_devices(void)
 681 {
 682         return of_platform_bus_probe(NULL, octeon_ids, NULL);
 683 }
 684 device_initcall(octeon_publish_devices);
 685
 686 MODULE_AUTHOR("David Daney <[email protected]>");
 687 MODULE_LICENSE("GPL");
 688 MODULE_DESCRIPTION("Platform driver for Octeon SOC");