arch/arm/mach-kirkwood/common.c

   1 /*
   2  * arch/arm/mach-kirkwood/common.c
   3  *
   4  * Core functions for Marvell Kirkwood SoCs
   5  *
   6  * This file is licensed under the terms of the GNU General Public
   7  * License version 2.  This program is licensed "as is" without any
   8  * warranty of any kind, whether express or implied.
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/serial_8250.h>
  15 #include <linux/mbus.h>
  16 #include <linux/mv643xx_eth.h>
  17 #include <linux/ata_platform.h>
  18 #include <linux/spi/orion_spi.h>
  19 #include <net/dsa.h>
  20 #include <asm/page.h>
  21 #include <asm/timex.h>
  22 #include <asm/mach/map.h>
  23 #include <asm/mach/time.h>
  24 #include <mach/kirkwood.h>
  25 #include <plat/cache-feroceon-l2.h>
  26 #include <plat/ehci-orion.h>
  27 #include <plat/mv_xor.h>
  28 #include <plat/orion_nand.h>
  29 #include <plat/time.h>
  30 #include "common.h"
  31
  32 /*****************************************************************************
  33  * I/O Address Mapping
  34  ****************************************************************************/
  35 static struct map_desc kirkwood_io_desc[] __initdata = {
  36         {
  37                 .virtual        = KIRKWOOD_PCIE_IO_VIRT_BASE,
  38                 .pfn            = __phys_to_pfn(KIRKWOOD_PCIE_IO_PHYS_BASE),
  39                 .length         = KIRKWOOD_PCIE_IO_SIZE,
  40                 .type           = MT_DEVICE,
  41         }, {
  42                 .virtual        = KIRKWOOD_REGS_VIRT_BASE,
  43                 .pfn            = __phys_to_pfn(KIRKWOOD_REGS_PHYS_BASE),
  44                 .length         = KIRKWOOD_REGS_SIZE,
  45                 .type           = MT_DEVICE,
  46         },
  47 };
  48
  49 void __init kirkwood_map_io(void)
  50 {
  51         iotable_init(kirkwood_io_desc, ARRAY_SIZE(kirkwood_io_desc));
  52 }
  53
  54
  55 /*****************************************************************************
  56  * EHCI
  57  ****************************************************************************/
  58 static struct orion_ehci_data kirkwood_ehci_data = {
  59         .dram           = &kirkwood_mbus_dram_info,
  60         .phy_version    = EHCI_PHY_NA,
  61 };
  62
  63 static u64 ehci_dmamask = 0xffffffffUL;
  64
  65
  66 /*****************************************************************************
  67  * EHCI0
  68  ****************************************************************************/
  69 static struct resource kirkwood_ehci_resources[] = {
  70         {
  71                 .start  = USB_PHYS_BASE,
  72                 .end    = USB_PHYS_BASE + 0x0fff,
  73                 .flags  = IORESOURCE_MEM,
  74         }, {
  75                 .start  = IRQ_KIRKWOOD_USB,
  76                 .end    = IRQ_KIRKWOOD_USB,
  77                 .flags  = IORESOURCE_IRQ,
  78         },
  79 };
  80
  81 static struct platform_device kirkwood_ehci = {
  82         .name           = "orion-ehci",
  83         .id             = 0,
  84         .dev            = {
  85                 .dma_mask               = &ehci_dmamask,
  86                 .coherent_dma_mask      = 0xffffffff,
  87                 .platform_data          = &kirkwood_ehci_data,
  88         },
  89         .resource       = kirkwood_ehci_resources,
  90         .num_resources  = ARRAY_SIZE(kirkwood_ehci_resources),
  91 };
  92
  93 void __init kirkwood_ehci_init(void)
  94 {
  95         platform_device_register(&kirkwood_ehci);
  96 }
  97
  98
  99 /*****************************************************************************
 100  * GE00
 101  ****************************************************************************/
 102 struct mv643xx_eth_shared_platform_data kirkwood_ge00_shared_data = {
 103         .dram           = &kirkwood_mbus_dram_info,
 104 };
 105
 106 static struct resource kirkwood_ge00_shared_resources[] = {
 107         {
 108                 .name   = "ge00 base",
 109                 .start  = GE00_PHYS_BASE + 0x2000,
 110                 .end    = GE00_PHYS_BASE + 0x3fff,
 111                 .flags  = IORESOURCE_MEM,
 112         }, {
 113                 .name   = "ge00 err irq",
 114                 .start  = IRQ_KIRKWOOD_GE00_ERR,
 115                 .end    = IRQ_KIRKWOOD_GE00_ERR,
 116                 .flags  = IORESOURCE_IRQ,
 117         },
 118 };
 119
 120 static struct platform_device kirkwood_ge00_shared = {
 121         .name           = MV643XX_ETH_SHARED_NAME,
 122         .id             = 0,
 123         .dev            = {
 124                 .platform_data  = &kirkwood_ge00_shared_data,
 125         },
 126         .num_resources  = ARRAY_SIZE(kirkwood_ge00_shared_resources),
 127         .resource       = kirkwood_ge00_shared_resources,
 128 };
 129
 130 static struct resource kirkwood_ge00_resources[] = {
 131         {
 132                 .name   = "ge00 irq",
 133                 .start  = IRQ_KIRKWOOD_GE00_SUM,
 134                 .end    = IRQ_KIRKWOOD_GE00_SUM,
 135                 .flags  = IORESOURCE_IRQ,
 136         },
 137 };
 138
 139 static struct platform_device kirkwood_ge00 = {
 140         .name           = MV643XX_ETH_NAME,
 141         .id             = 0,
 142         .num_resources  = 1,
 143         .resource       = kirkwood_ge00_resources,
 144 };
 145
 146 void __init kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data)
 147 {
 148         eth_data->shared = &kirkwood_ge00_shared;
 149         kirkwood_ge00.dev.platform_data = eth_data;
 150
 151         platform_device_register(&kirkwood_ge00_shared);
 152         platform_device_register(&kirkwood_ge00);
 153 }
 154
 155
 156 /*****************************************************************************
 157  * GE01
 158  ****************************************************************************/
 159 struct mv643xx_eth_shared_platform_data kirkwood_ge01_shared_data = {
 160         .dram           = &kirkwood_mbus_dram_info,
 161         .shared_smi     = &kirkwood_ge00_shared,
 162 };
 163
 164 static struct resource kirkwood_ge01_shared_resources[] = {
 165         {
 166                 .name   = "ge01 base",
 167                 .start  = GE01_PHYS_BASE + 0x2000,
 168                 .end    = GE01_PHYS_BASE + 0x3fff,
 169                 .flags  = IORESOURCE_MEM,
 170         }, {
 171                 .name   = "ge01 err irq",
 172                 .start  = IRQ_KIRKWOOD_GE01_ERR,
 173                 .end    = IRQ_KIRKWOOD_GE01_ERR,
 174                 .flags  = IORESOURCE_IRQ,
 175         },
 176 };
 177
 178 static struct platform_device kirkwood_ge01_shared = {
 179         .name           = MV643XX_ETH_SHARED_NAME,
 180         .id             = 1,
 181         .dev            = {
 182                 .platform_data  = &kirkwood_ge01_shared_data,
 183         },
 184         .num_resources  = ARRAY_SIZE(kirkwood_ge01_shared_resources),
 185         .resource       = kirkwood_ge01_shared_resources,
 186 };
 187
 188 static struct resource kirkwood_ge01_resources[] = {
 189         {
 190                 .name   = "ge01 irq",
 191                 .start  = IRQ_KIRKWOOD_GE01_SUM,
 192                 .end    = IRQ_KIRKWOOD_GE01_SUM,
 193                 .flags  = IORESOURCE_IRQ,
 194         },
 195 };
 196
 197 static struct platform_device kirkwood_ge01 = {
 198         .name           = MV643XX_ETH_NAME,
 199         .id             = 1,
 200         .num_resources  = 1,
 201         .resource       = kirkwood_ge01_resources,
 202 };
 203
 204 void __init kirkwood_ge01_init(struct mv643xx_eth_platform_data *eth_data)
 205 {
 206         eth_data->shared = &kirkwood_ge01_shared;
 207         kirkwood_ge01.dev.platform_data = eth_data;
 208
 209         platform_device_register(&kirkwood_ge01_shared);
 210         platform_device_register(&kirkwood_ge01);
 211 }
 212
 213
 214 /*****************************************************************************
 215  * Ethernet switch
 216  ****************************************************************************/
 217 static struct resource kirkwood_switch_resources[] = {
 218         {
 219                 .start  = 0,
 220                 .end    = 0,
 221                 .flags  = IORESOURCE_IRQ,
 222         },
 223 };
 224
 225 static struct platform_device kirkwood_switch_device = {
 226         .name           = "dsa",
 227         .id             = 0,
 228         .num_resources  = 0,
 229         .resource       = kirkwood_switch_resources,
 230 };
 231
 232 void __init kirkwood_ge00_switch_init(struct dsa_platform_data *d, int irq)
 233 {
 234         if (irq != NO_IRQ) {
 235                 kirkwood_switch_resources[0].start = irq;
 236                 kirkwood_switch_resources[0].end = irq;
 237                 kirkwood_switch_device.num_resources = 1;
 238         }
 239
 240         d->mii_bus = &kirkwood_ge00_shared.dev;
 241         d->netdev = &kirkwood_ge00.dev;
 242         kirkwood_switch_device.dev.platform_data = d;
 243
 244         platform_device_register(&kirkwood_switch_device);
 245 }
 246
 247
 248 /*****************************************************************************
 249  * SoC RTC
 250  ****************************************************************************/
 251 static struct resource kirkwood_rtc_resource = {
 252         .start  = RTC_PHYS_BASE,
 253         .end    = RTC_PHYS_BASE + SZ_16 - 1,
 254         .flags  = IORESOURCE_MEM,
 255 };
 256
 257 void __init kirkwood_rtc_init(void)
 258 {
 259         platform_device_register_simple("rtc-mv", -1, &kirkwood_rtc_resource, 1);
 260 }
 261
 262
 263 /*****************************************************************************
 264  * SATA
 265  ****************************************************************************/
 266 static struct resource kirkwood_sata_resources[] = {
 267         {
 268                 .name   = "sata base",
 269                 .start  = SATA_PHYS_BASE,
 270                 .end    = SATA_PHYS_BASE + 0x5000 - 1,
 271                 .flags  = IORESOURCE_MEM,
 272         }, {
 273                 .name   = "sata irq",
 274                 .start  = IRQ_KIRKWOOD_SATA,
 275                 .end    = IRQ_KIRKWOOD_SATA,
 276                 .flags  = IORESOURCE_IRQ,
 277         },
 278 };
 279
 280 static struct platform_device kirkwood_sata = {
 281         .name           = "sata_mv",
 282         .id             = 0,
 283         .dev            = {
 284                 .coherent_dma_mask      = 0xffffffff,
 285         },
 286         .num_resources  = ARRAY_SIZE(kirkwood_sata_resources),
 287         .resource       = kirkwood_sata_resources,
 288 };
 289
 290 void __init kirkwood_sata_init(struct mv_sata_platform_data *sata_data)
 291 {
 292         sata_data->dram = &kirkwood_mbus_dram_info;
 293         kirkwood_sata.dev.platform_data = sata_data;
 294         platform_device_register(&kirkwood_sata);
 295 }
 296
 297
 298 /*****************************************************************************
 299  * SPI
 300  ****************************************************************************/
 301 static struct orion_spi_info kirkwood_spi_plat_data = {
 302 };
 303
 304 static struct resource kirkwood_spi_resources[] = {
 305         {
 306                 .start  = SPI_PHYS_BASE,
 307                 .end    = SPI_PHYS_BASE + SZ_512 - 1,
 308                 .flags  = IORESOURCE_MEM,
 309         },
 310 };
 311
 312 static struct platform_device kirkwood_spi = {
 313         .name           = "orion_spi",
 314         .id             = 0,
 315         .resource       = kirkwood_spi_resources,
 316         .dev            = {
 317                 .platform_data  = &kirkwood_spi_plat_data,
 318         },
 319         .num_resources  = ARRAY_SIZE(kirkwood_spi_resources),
 320 };
 321
 322 void __init kirkwood_spi_init()
 323 {
 324         platform_device_register(&kirkwood_spi);
 325 }
 326
 327
 328 /*****************************************************************************
 329  * UART0
 330  ****************************************************************************/
 331 static struct plat_serial8250_port kirkwood_uart0_data[] = {
 332         {
 333                 .mapbase        = UART0_PHYS_BASE,
 334                 .membase        = (char *)UART0_VIRT_BASE,
 335                 .irq            = IRQ_KIRKWOOD_UART_0,
 336                 .flags          = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
 337                 .iotype         = UPIO_MEM,
 338                 .regshift       = 2,
 339                 .uartclk        = 0,
 340         }, {
 341         },
 342 };
 343
 344 static struct resource kirkwood_uart0_resources[] = {
 345         {
 346                 .start          = UART0_PHYS_BASE,
 347                 .end            = UART0_PHYS_BASE + 0xff,
 348                 .flags          = IORESOURCE_MEM,
 349         }, {
 350                 .start          = IRQ_KIRKWOOD_UART_0,
 351                 .end            = IRQ_KIRKWOOD_UART_0,
 352                 .flags          = IORESOURCE_IRQ,
 353         },
 354 };
 355
 356 static struct platform_device kirkwood_uart0 = {
 357         .name                   = "serial8250",
 358         .id                     = 0,
 359         .dev                    = {
 360                 .platform_data  = kirkwood_uart0_data,
 361         },
 362         .resource               = kirkwood_uart0_resources,
 363         .num_resources          = ARRAY_SIZE(kirkwood_uart0_resources),
 364 };
 365
 366 void __init kirkwood_uart0_init(void)
 367 {
 368         platform_device_register(&kirkwood_uart0);
 369 }
 370
 371
 372 /*****************************************************************************
 373  * UART1
 374  ****************************************************************************/
 375 static struct plat_serial8250_port kirkwood_uart1_data[] = {
 376         {
 377                 .mapbase        = UART1_PHYS_BASE,
 378                 .membase        = (char *)UART1_VIRT_BASE,
 379                 .irq            = IRQ_KIRKWOOD_UART_1,
 380                 .flags          = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
 381                 .iotype         = UPIO_MEM,
 382                 .regshift       = 2,
 383                 .uartclk        = 0,
 384         }, {
 385         },
 386 };
 387
 388 static struct resource kirkwood_uart1_resources[] = {
 389         {
 390                 .start          = UART1_PHYS_BASE,
 391                 .end            = UART1_PHYS_BASE + 0xff,
 392                 .flags          = IORESOURCE_MEM,
 393         }, {
 394                 .start          = IRQ_KIRKWOOD_UART_1,
 395                 .end            = IRQ_KIRKWOOD_UART_1,
 396                 .flags          = IORESOURCE_IRQ,
 397         },
 398 };
 399
 400 static struct platform_device kirkwood_uart1 = {
 401         .name                   = "serial8250",
 402         .id                     = 1,
 403         .dev                    = {
 404                 .platform_data  = kirkwood_uart1_data,
 405         },
 406         .resource               = kirkwood_uart1_resources,
 407         .num_resources          = ARRAY_SIZE(kirkwood_uart1_resources),
 408 };
 409
 410 void __init kirkwood_uart1_init(void)
 411 {
 412         platform_device_register(&kirkwood_uart1);
 413 }
 414
 415
 416 /*****************************************************************************
 417  * XOR
 418  ****************************************************************************/
 419 static struct mv_xor_platform_shared_data kirkwood_xor_shared_data = {
 420         .dram           = &kirkwood_mbus_dram_info,
 421 };
 422
 423 static u64 kirkwood_xor_dmamask = DMA_32BIT_MASK;
 424
 425
 426 /*****************************************************************************
 427  * XOR0
 428  ****************************************************************************/
 429 static struct resource kirkwood_xor0_shared_resources[] = {
 430         {
 431                 .name   = "xor 0 low",
 432                 .start  = XOR0_PHYS_BASE,
 433                 .end    = XOR0_PHYS_BASE + 0xff,
 434                 .flags  = IORESOURCE_MEM,
 435         }, {
 436                 .name   = "xor 0 high",
 437                 .start  = XOR0_HIGH_PHYS_BASE,
 438                 .end    = XOR0_HIGH_PHYS_BASE + 0xff,
 439                 .flags  = IORESOURCE_MEM,
 440         },
 441 };
 442
 443 static struct platform_device kirkwood_xor0_shared = {
 444         .name           = MV_XOR_SHARED_NAME,
 445         .id             = 0,
 446         .dev            = {
 447                 .platform_data = &kirkwood_xor_shared_data,
 448         },
 449         .num_resources  = ARRAY_SIZE(kirkwood_xor0_shared_resources),
 450         .resource       = kirkwood_xor0_shared_resources,
 451 };
 452
 453 static struct resource kirkwood_xor00_resources[] = {
 454         [0] = {
 455                 .start  = IRQ_KIRKWOOD_XOR_00,
 456                 .end    = IRQ_KIRKWOOD_XOR_00,
 457                 .flags  = IORESOURCE_IRQ,
 458         },
 459 };
 460
 461 static struct mv_xor_platform_data kirkwood_xor00_data = {
 462         .shared         = &kirkwood_xor0_shared,
 463         .hw_id          = 0,
 464         .pool_size      = PAGE_SIZE,
 465 };
 466
 467 static struct platform_device kirkwood_xor00_channel = {
 468         .name           = MV_XOR_NAME,
 469         .id             = 0,
 470         .num_resources  = ARRAY_SIZE(kirkwood_xor00_resources),
 471         .resource       = kirkwood_xor00_resources,
 472         .dev            = {
 473                 .dma_mask               = &kirkwood_xor_dmamask,
 474                 .coherent_dma_mask      = DMA_64BIT_MASK,
 475                 .platform_data          = (void *)&kirkwood_xor00_data,
 476         },
 477 };
 478
 479 static struct resource kirkwood_xor01_resources[] = {
 480         [0] = {
 481                 .start  = IRQ_KIRKWOOD_XOR_01,
 482                 .end    = IRQ_KIRKWOOD_XOR_01,
 483                 .flags  = IORESOURCE_IRQ,
 484         },
 485 };
 486
 487 static struct mv_xor_platform_data kirkwood_xor01_data = {
 488         .shared         = &kirkwood_xor0_shared,
 489         .hw_id          = 1,
 490         .pool_size      = PAGE_SIZE,
 491 };
 492
 493 static struct platform_device kirkwood_xor01_channel = {
 494         .name           = MV_XOR_NAME,
 495         .id             = 1,
 496         .num_resources  = ARRAY_SIZE(kirkwood_xor01_resources),
 497         .resource       = kirkwood_xor01_resources,
 498         .dev            = {
 499                 .dma_mask               = &kirkwood_xor_dmamask,
 500                 .coherent_dma_mask      = DMA_64BIT_MASK,
 501                 .platform_data          = (void *)&kirkwood_xor01_data,
 502         },
 503 };
 504
 505 void __init kirkwood_xor0_init(void)
 506 {
 507         platform_device_register(&kirkwood_xor0_shared);
 508
 509         /*
 510          * two engines can't do memset simultaneously, this limitation
 511          * satisfied by removing memset support from one of the engines.
 512          */
 513         dma_cap_set(DMA_MEMCPY, kirkwood_xor00_data.cap_mask);
 514         dma_cap_set(DMA_XOR, kirkwood_xor00_data.cap_mask);
 515         platform_device_register(&kirkwood_xor00_channel);
 516
 517         dma_cap_set(DMA_MEMCPY, kirkwood_xor01_data.cap_mask);
 518         dma_cap_set(DMA_MEMSET, kirkwood_xor01_data.cap_mask);
 519         dma_cap_set(DMA_XOR, kirkwood_xor01_data.cap_mask);
 520         platform_device_register(&kirkwood_xor01_channel);
 521 }
 522
 523
 524 /*****************************************************************************
 525  * XOR1
 526  ****************************************************************************/
 527 static struct resource kirkwood_xor1_shared_resources[] = {
 528         {
 529                 .name   = "xor 1 low",
 530                 .start  = XOR1_PHYS_BASE,
 531                 .end    = XOR1_PHYS_BASE + 0xff,
 532                 .flags  = IORESOURCE_MEM,
 533         }, {
 534                 .name   = "xor 1 high",
 535                 .start  = XOR1_HIGH_PHYS_BASE,
 536                 .end    = XOR1_HIGH_PHYS_BASE + 0xff,
 537                 .flags  = IORESOURCE_MEM,
 538         },
 539 };
 540
 541 static struct platform_device kirkwood_xor1_shared = {
 542         .name           = MV_XOR_SHARED_NAME,
 543         .id             = 1,
 544         .dev            = {
 545                 .platform_data = &kirkwood_xor_shared_data,
 546         },
 547         .num_resources  = ARRAY_SIZE(kirkwood_xor1_shared_resources),
 548         .resource       = kirkwood_xor1_shared_resources,
 549 };
 550
 551 static struct resource kirkwood_xor10_resources[] = {
 552         [0] = {
 553                 .start  = IRQ_KIRKWOOD_XOR_10,
 554                 .end    = IRQ_KIRKWOOD_XOR_10,
 555                 .flags  = IORESOURCE_IRQ,
 556         },
 557 };
 558
 559 static struct mv_xor_platform_data kirkwood_xor10_data = {
 560         .shared         = &kirkwood_xor1_shared,
 561         .hw_id          = 0,
 562         .pool_size      = PAGE_SIZE,
 563 };
 564
 565 static struct platform_device kirkwood_xor10_channel = {
 566         .name           = MV_XOR_NAME,
 567         .id             = 2,
 568         .num_resources  = ARRAY_SIZE(kirkwood_xor10_resources),
 569         .resource       = kirkwood_xor10_resources,
 570         .dev            = {
 571                 .dma_mask               = &kirkwood_xor_dmamask,
 572                 .coherent_dma_mask      = DMA_64BIT_MASK,
 573                 .platform_data          = (void *)&kirkwood_xor10_data,
 574         },
 575 };
 576
 577 static struct resource kirkwood_xor11_resources[] = {
 578         [0] = {
 579                 .start  = IRQ_KIRKWOOD_XOR_11,
 580                 .end    = IRQ_KIRKWOOD_XOR_11,
 581                 .flags  = IORESOURCE_IRQ,
 582         },
 583 };
 584
 585 static struct mv_xor_platform_data kirkwood_xor11_data = {
 586         .shared         = &kirkwood_xor1_shared,
 587         .hw_id          = 1,
 588         .pool_size      = PAGE_SIZE,
 589 };
 590
 591 static struct platform_device kirkwood_xor11_channel = {
 592         .name           = MV_XOR_NAME,
 593         .id             = 3,
 594         .num_resources  = ARRAY_SIZE(kirkwood_xor11_resources),
 595         .resource       = kirkwood_xor11_resources,
 596         .dev            = {
 597                 .dma_mask               = &kirkwood_xor_dmamask,
 598                 .coherent_dma_mask      = DMA_64BIT_MASK,
 599                 .platform_data          = (void *)&kirkwood_xor11_data,
 600         },
 601 };
 602
 603 void __init kirkwood_xor1_init(void)
 604 {
 605         platform_device_register(&kirkwood_xor1_shared);
 606
 607         /*
 608          * two engines can't do memset simultaneously, this limitation
 609          * satisfied by removing memset support from one of the engines.
 610          */
 611         dma_cap_set(DMA_MEMCPY, kirkwood_xor10_data.cap_mask);
 612         dma_cap_set(DMA_XOR, kirkwood_xor10_data.cap_mask);
 613         platform_device_register(&kirkwood_xor10_channel);
 614
 615         dma_cap_set(DMA_MEMCPY, kirkwood_xor11_data.cap_mask);
 616         dma_cap_set(DMA_MEMSET, kirkwood_xor11_data.cap_mask);
 617         dma_cap_set(DMA_XOR, kirkwood_xor11_data.cap_mask);
 618         platform_device_register(&kirkwood_xor11_channel);
 619 }
 620
 621
 622 /*****************************************************************************
 623  * Time handling
 624  ****************************************************************************/
 625 int kirkwood_tclk;
 626
 627 int __init kirkwood_find_tclk(void)
 628 {
 629         u32 dev, rev;
 630
 631         kirkwood_pcie_id(&dev, &rev);
 632         if (dev == MV88F6281_DEV_ID && rev == MV88F6281_REV_A0)
 633                 return 200000000;
 634
 635         return 166666667;
 636 }
 637
 638 static void kirkwood_timer_init(void)
 639 {
 640         kirkwood_tclk = kirkwood_find_tclk();
 641         orion_time_init(IRQ_KIRKWOOD_BRIDGE, kirkwood_tclk);
 642 }
 643
 644 struct sys_timer kirkwood_timer = {
 645         .init = kirkwood_timer_init,
 646 };
 647
 648
 649 /*****************************************************************************
 650  * General
 651  ****************************************************************************/
 652 /*
 653  * Identify device ID and revision.
 654  */
 655 static char * __init kirkwood_id(void)
 656 {
 657         u32 dev, rev;
 658
 659         kirkwood_pcie_id(&dev, &rev);
 660
 661         if (dev == MV88F6281_DEV_ID) {
 662                 if (rev == MV88F6281_REV_Z0)
 663                         return "MV88F6281-Z0";
 664                 else if (rev == MV88F6281_REV_A0)
 665                         return "MV88F6281-A0";
 666                 else
 667                         return "MV88F6281-Rev-Unsupported";
 668         } else if (dev == MV88F6192_DEV_ID) {
 669                 if (rev == MV88F6192_REV_Z0)
 670                         return "MV88F6192-Z0";
 671                 else if (rev == MV88F6192_REV_A0)
 672                         return "MV88F6192-A0";
 673                 else
 674                         return "MV88F6192-Rev-Unsupported";
 675         } else if (dev == MV88F6180_DEV_ID) {
 676                 if (rev == MV88F6180_REV_A0)
 677                         return "MV88F6180-Rev-A0";
 678                 else
 679                         return "MV88F6180-Rev-Unsupported";
 680         } else {
 681                 return "Device-Unknown";
 682         }
 683 }
 684
 685 static void __init kirkwood_l2_init(void)
 686 {
 687 #ifdef CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH
 688         writel(readl(L2_CONFIG_REG) | L2_WRITETHROUGH, L2_CONFIG_REG);
 689         feroceon_l2_init(1);
 690 #else
 691         writel(readl(L2_CONFIG_REG) & ~L2_WRITETHROUGH, L2_CONFIG_REG);
 692         feroceon_l2_init(0);
 693 #endif
 694 }
 695
 696 void __init kirkwood_init(void)
 697 {
 698         printk(KERN_INFO "Kirkwood: %s, TCLK=%d.\n",
 699                 kirkwood_id(), kirkwood_tclk);
 700         kirkwood_ge00_shared_data.t_clk = kirkwood_tclk;
 701         kirkwood_spi_plat_data.tclk = kirkwood_tclk;
 702         kirkwood_uart0_data[0].uartclk = kirkwood_tclk;
 703         kirkwood_uart1_data[0].uartclk = kirkwood_tclk;
 704
 705         kirkwood_setup_cpu_mbus();
 706
 707 #ifdef CONFIG_CACHE_FEROCEON_L2
 708         kirkwood_l2_init();
 709 #endif
 710 }