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common.c

/*
 * arch/arm/mach-kirkwood/common.c
 *
 * Core functions for Marvell Kirkwood SoCs
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2.  This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
#include <linux/mbus.h>
#include <linux/mv643xx_eth.h>
#include <linux/mv643xx_i2c.h>
#include <linux/ata_platform.h>
#include <linux/mtd/nand.h>
#include <linux/spi/orion_spi.h>
#include <net/dsa.h>
#include <asm/page.h>
#include <asm/timex.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include <mach/kirkwood.h>
#include <mach/bridge-regs.h>
#include <plat/cache-feroceon-l2.h>
#include <plat/ehci-orion.h>
#include <plat/mvsdio.h>
#include <plat/mv_xor.h>
#include <plat/orion_nand.h>
#include <plat/orion_wdt.h>
#include <plat/time.h>
#include "common.h"

/*****************************************************************************
 * I/O Address Mapping
 ****************************************************************************/
static struct map_desc kirkwood_io_desc[] __initdata = {
      {
            .virtual    = KIRKWOOD_PCIE_IO_VIRT_BASE,
            .pfn        = __phys_to_pfn(KIRKWOOD_PCIE_IO_PHYS_BASE),
            .length           = KIRKWOOD_PCIE_IO_SIZE,
            .type       = MT_DEVICE,
      }, {
            .virtual    = KIRKWOOD_REGS_VIRT_BASE,
            .pfn        = __phys_to_pfn(KIRKWOOD_REGS_PHYS_BASE),
            .length           = KIRKWOOD_REGS_SIZE,
            .type       = MT_DEVICE,
      },
};

void __init kirkwood_map_io(void)
{
      iotable_init(kirkwood_io_desc, ARRAY_SIZE(kirkwood_io_desc));
}

/*
 * Default clock control bits.  Any bit _not_ set in this variable
 * will be cleared from the hardware after platform devices have been
 * registered.  Some reserved bits must be set to 1.
 */
unsigned int kirkwood_clk_ctrl = CGC_DUNIT | CGC_RESERVED;
      

/*****************************************************************************
 * EHCI
 ****************************************************************************/
static struct orion_ehci_data kirkwood_ehci_data = {
      .dram       = &kirkwood_mbus_dram_info,
      .phy_version      = EHCI_PHY_NA,
};

static u64 ehci_dmamask = 0xffffffffUL;


/*****************************************************************************
 * EHCI0
 ****************************************************************************/
static struct resource kirkwood_ehci_resources[] = {
      {
            .start      = USB_PHYS_BASE,
            .end  = USB_PHYS_BASE + 0x0fff,
            .flags      = IORESOURCE_MEM,
      }, {
            .start      = IRQ_KIRKWOOD_USB,
            .end  = IRQ_KIRKWOOD_USB,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device kirkwood_ehci = {
      .name       = "orion-ehci",
      .id         = 0,
      .dev        = {
            .dma_mask         = &ehci_dmamask,
            .coherent_dma_mask      = 0xffffffff,
            .platform_data          = &kirkwood_ehci_data,
      },
      .resource   = kirkwood_ehci_resources,
      .num_resources    = ARRAY_SIZE(kirkwood_ehci_resources),
};

void __init kirkwood_ehci_init(void)
{
      kirkwood_clk_ctrl |= CGC_USB0;
      platform_device_register(&kirkwood_ehci);
}


/*****************************************************************************
 * GE00
 ****************************************************************************/
struct mv643xx_eth_shared_platform_data kirkwood_ge00_shared_data = {
      .dram       = &kirkwood_mbus_dram_info,
};

static struct resource kirkwood_ge00_shared_resources[] = {
      {
            .name = "ge00 base",
            .start      = GE00_PHYS_BASE + 0x2000,
            .end  = GE00_PHYS_BASE + 0x3fff,
            .flags      = IORESOURCE_MEM,
      }, {
            .name = "ge00 err irq",
            .start      = IRQ_KIRKWOOD_GE00_ERR,
            .end  = IRQ_KIRKWOOD_GE00_ERR,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device kirkwood_ge00_shared = {
      .name       = MV643XX_ETH_SHARED_NAME,
      .id         = 0,
      .dev        = {
            .platform_data    = &kirkwood_ge00_shared_data,
      },
      .num_resources    = ARRAY_SIZE(kirkwood_ge00_shared_resources),
      .resource   = kirkwood_ge00_shared_resources,
};

static struct resource kirkwood_ge00_resources[] = {
      {
            .name = "ge00 irq",
            .start      = IRQ_KIRKWOOD_GE00_SUM,
            .end  = IRQ_KIRKWOOD_GE00_SUM,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device kirkwood_ge00 = {
      .name       = MV643XX_ETH_NAME,
      .id         = 0,
      .num_resources    = 1,
      .resource   = kirkwood_ge00_resources,
      .dev        = {
            .coherent_dma_mask      = 0xffffffff,
      },
};

void __init kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data)
{
      kirkwood_clk_ctrl |= CGC_GE0;
      eth_data->shared = &kirkwood_ge00_shared;
      kirkwood_ge00.dev.platform_data = eth_data;

      platform_device_register(&kirkwood_ge00_shared);
      platform_device_register(&kirkwood_ge00);
}


/*****************************************************************************
 * GE01
 ****************************************************************************/
struct mv643xx_eth_shared_platform_data kirkwood_ge01_shared_data = {
      .dram       = &kirkwood_mbus_dram_info,
      .shared_smi = &kirkwood_ge00_shared,
};

static struct resource kirkwood_ge01_shared_resources[] = {
      {
            .name = "ge01 base",
            .start      = GE01_PHYS_BASE + 0x2000,
            .end  = GE01_PHYS_BASE + 0x3fff,
            .flags      = IORESOURCE_MEM,
      }, {
            .name = "ge01 err irq",
            .start      = IRQ_KIRKWOOD_GE01_ERR,
            .end  = IRQ_KIRKWOOD_GE01_ERR,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device kirkwood_ge01_shared = {
      .name       = MV643XX_ETH_SHARED_NAME,
      .id         = 1,
      .dev        = {
            .platform_data    = &kirkwood_ge01_shared_data,
      },
      .num_resources    = ARRAY_SIZE(kirkwood_ge01_shared_resources),
      .resource   = kirkwood_ge01_shared_resources,
};

static struct resource kirkwood_ge01_resources[] = {
      {
            .name = "ge01 irq",
            .start      = IRQ_KIRKWOOD_GE01_SUM,
            .end  = IRQ_KIRKWOOD_GE01_SUM,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device kirkwood_ge01 = {
      .name       = MV643XX_ETH_NAME,
      .id         = 1,
      .num_resources    = 1,
      .resource   = kirkwood_ge01_resources,
      .dev        = {
            .coherent_dma_mask      = 0xffffffff,
      },
};

void __init kirkwood_ge01_init(struct mv643xx_eth_platform_data *eth_data)
{
      kirkwood_clk_ctrl |= CGC_GE1;
      eth_data->shared = &kirkwood_ge01_shared;
      kirkwood_ge01.dev.platform_data = eth_data;

      platform_device_register(&kirkwood_ge01_shared);
      platform_device_register(&kirkwood_ge01);
}


/*****************************************************************************
 * Ethernet switch
 ****************************************************************************/
static struct resource kirkwood_switch_resources[] = {
      {
            .start      = 0,
            .end  = 0,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device kirkwood_switch_device = {
      .name       = "dsa",
      .id         = 0,
      .num_resources    = 0,
      .resource   = kirkwood_switch_resources,
};

void __init kirkwood_ge00_switch_init(struct dsa_platform_data *d, int irq)
{
      int i;

      if (irq != NO_IRQ) {
            kirkwood_switch_resources[0].start = irq;
            kirkwood_switch_resources[0].end = irq;
            kirkwood_switch_device.num_resources = 1;
      }

      d->netdev = &kirkwood_ge00.dev;
      for (i = 0; i < d->nr_chips; i++)
            d->chip[i].mii_bus = &kirkwood_ge00_shared.dev;
      kirkwood_switch_device.dev.platform_data = d;

      platform_device_register(&kirkwood_switch_device);
}


/*****************************************************************************
 * NAND flash
 ****************************************************************************/
static struct resource kirkwood_nand_resource = {
      .flags            = IORESOURCE_MEM,
      .start            = KIRKWOOD_NAND_MEM_PHYS_BASE,
      .end        = KIRKWOOD_NAND_MEM_PHYS_BASE +
                        KIRKWOOD_NAND_MEM_SIZE - 1,
};

static struct orion_nand_data kirkwood_nand_data = {
      .cle        = 0,
      .ale        = 1,
      .width            = 8,
};

static struct platform_device kirkwood_nand_flash = {
      .name       = "orion_nand",
      .id         = -1,
      .dev        = {
            .platform_data    = &kirkwood_nand_data,
      },
      .resource   = &kirkwood_nand_resource,
      .num_resources    = 1,
};

void __init kirkwood_nand_init(struct mtd_partition *parts, int nr_parts,
                         int chip_delay)
{
      kirkwood_clk_ctrl |= CGC_RUNIT;
      kirkwood_nand_data.parts = parts;
      kirkwood_nand_data.nr_parts = nr_parts;
      kirkwood_nand_data.chip_delay = chip_delay;
      platform_device_register(&kirkwood_nand_flash);
}


/*****************************************************************************
 * SoC RTC
 ****************************************************************************/
static struct resource kirkwood_rtc_resource = {
      .start      = RTC_PHYS_BASE,
      .end  = RTC_PHYS_BASE + SZ_16 - 1,
      .flags      = IORESOURCE_MEM,
};

static void __init kirkwood_rtc_init(void)
{
      platform_device_register_simple("rtc-mv", -1, &kirkwood_rtc_resource, 1);
}


/*****************************************************************************
 * SATA
 ****************************************************************************/
static struct resource kirkwood_sata_resources[] = {
      {
            .name = "sata base",
            .start      = SATA_PHYS_BASE,
            .end  = SATA_PHYS_BASE + 0x5000 - 1,
            .flags      = IORESOURCE_MEM,
      }, {
            .name = "sata irq",
            .start      = IRQ_KIRKWOOD_SATA,
            .end  = IRQ_KIRKWOOD_SATA,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device kirkwood_sata = {
      .name       = "sata_mv",
      .id         = 0,
      .dev        = {
            .coherent_dma_mask      = 0xffffffff,
      },
      .num_resources    = ARRAY_SIZE(kirkwood_sata_resources),
      .resource   = kirkwood_sata_resources,
};

void __init kirkwood_sata_init(struct mv_sata_platform_data *sata_data)
{
      kirkwood_clk_ctrl |= CGC_SATA0;
      if (sata_data->n_ports > 1)
            kirkwood_clk_ctrl |= CGC_SATA1;
      sata_data->dram = &kirkwood_mbus_dram_info;
      kirkwood_sata.dev.platform_data = sata_data;
      platform_device_register(&kirkwood_sata);
}


/*****************************************************************************
 * SD/SDIO/MMC
 ****************************************************************************/
static struct resource mvsdio_resources[] = {
      [0] = {
            .start      = SDIO_PHYS_BASE,
            .end  = SDIO_PHYS_BASE + SZ_1K - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = IRQ_KIRKWOOD_SDIO,
            .end  = IRQ_KIRKWOOD_SDIO,
            .flags      = IORESOURCE_IRQ,
      },
};

static u64 mvsdio_dmamask = 0xffffffffUL;

static struct platform_device kirkwood_sdio = {
      .name       = "mvsdio",
      .id         = -1,
      .dev        = {
            .dma_mask = &mvsdio_dmamask,
            .coherent_dma_mask = 0xffffffff,
      },
      .num_resources    = ARRAY_SIZE(mvsdio_resources),
      .resource   = mvsdio_resources,
};

void __init kirkwood_sdio_init(struct mvsdio_platform_data *mvsdio_data)
{
      u32 dev, rev;

      kirkwood_pcie_id(&dev, &rev);
      if (rev == 0)  /* catch all Kirkwood Z0's */
            mvsdio_data->clock = 100000000;
      else
            mvsdio_data->clock = 200000000;
      mvsdio_data->dram = &kirkwood_mbus_dram_info;
      kirkwood_clk_ctrl |= CGC_SDIO;
      kirkwood_sdio.dev.platform_data = mvsdio_data;
      platform_device_register(&kirkwood_sdio);
}


/*****************************************************************************
 * SPI
 ****************************************************************************/
static struct orion_spi_info kirkwood_spi_plat_data = {
};

static struct resource kirkwood_spi_resources[] = {
      {
            .start      = SPI_PHYS_BASE,
            .end  = SPI_PHYS_BASE + SZ_512 - 1,
            .flags      = IORESOURCE_MEM,
      },
};

static struct platform_device kirkwood_spi = {
      .name       = "orion_spi",
      .id         = 0,
      .resource   = kirkwood_spi_resources,
      .dev        = {
            .platform_data    = &kirkwood_spi_plat_data,
      },
      .num_resources    = ARRAY_SIZE(kirkwood_spi_resources),
};

void __init kirkwood_spi_init()
{
      kirkwood_clk_ctrl |= CGC_RUNIT;
      platform_device_register(&kirkwood_spi);
}


/*****************************************************************************
 * I2C
 ****************************************************************************/
static struct mv64xxx_i2c_pdata kirkwood_i2c_pdata = {
      .freq_m           = 8, /* assumes 166 MHz TCLK */
      .freq_n           = 3,
      .timeout    = 1000, /* Default timeout of 1 second */
};

static struct resource kirkwood_i2c_resources[] = {
      {
            .start      = I2C_PHYS_BASE,
            .end  = I2C_PHYS_BASE + 0x1f,
            .flags      = IORESOURCE_MEM,
      }, {
            .start      = IRQ_KIRKWOOD_TWSI,
            .end  = IRQ_KIRKWOOD_TWSI,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device kirkwood_i2c = {
      .name       = MV64XXX_I2C_CTLR_NAME,
      .id         = 0,
      .num_resources    = ARRAY_SIZE(kirkwood_i2c_resources),
      .resource   = kirkwood_i2c_resources,
      .dev        = {
            .platform_data    = &kirkwood_i2c_pdata,
      },
};

void __init kirkwood_i2c_init(void)
{
      platform_device_register(&kirkwood_i2c);
}


/*****************************************************************************
 * UART0
 ****************************************************************************/
static struct plat_serial8250_port kirkwood_uart0_data[] = {
      {
            .mapbase    = UART0_PHYS_BASE,
            .membase    = (char *)UART0_VIRT_BASE,
            .irq        = IRQ_KIRKWOOD_UART_0,
            .flags            = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
            .iotype           = UPIO_MEM,
            .regshift   = 2,
            .uartclk    = 0,
      }, {
      },
};

static struct resource kirkwood_uart0_resources[] = {
      {
            .start            = UART0_PHYS_BASE,
            .end        = UART0_PHYS_BASE + 0xff,
            .flags            = IORESOURCE_MEM,
      }, {
            .start            = IRQ_KIRKWOOD_UART_0,
            .end        = IRQ_KIRKWOOD_UART_0,
            .flags            = IORESOURCE_IRQ,
      },
};

static struct platform_device kirkwood_uart0 = {
      .name             = "serial8250",
      .id               = 0,
      .dev              = {
            .platform_data    = kirkwood_uart0_data,
      },
      .resource         = kirkwood_uart0_resources,
      .num_resources          = ARRAY_SIZE(kirkwood_uart0_resources),
};

void __init kirkwood_uart0_init(void)
{
      platform_device_register(&kirkwood_uart0);
}


/*****************************************************************************
 * UART1
 ****************************************************************************/
static struct plat_serial8250_port kirkwood_uart1_data[] = {
      {
            .mapbase    = UART1_PHYS_BASE,
            .membase    = (char *)UART1_VIRT_BASE,
            .irq        = IRQ_KIRKWOOD_UART_1,
            .flags            = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
            .iotype           = UPIO_MEM,
            .regshift   = 2,
            .uartclk    = 0,
      }, {
      },
};

static struct resource kirkwood_uart1_resources[] = {
      {
            .start            = UART1_PHYS_BASE,
            .end        = UART1_PHYS_BASE + 0xff,
            .flags            = IORESOURCE_MEM,
      }, {
            .start            = IRQ_KIRKWOOD_UART_1,
            .end        = IRQ_KIRKWOOD_UART_1,
            .flags            = IORESOURCE_IRQ,
      },
};

static struct platform_device kirkwood_uart1 = {
      .name             = "serial8250",
      .id               = 1,
      .dev              = {
            .platform_data    = kirkwood_uart1_data,
      },
      .resource         = kirkwood_uart1_resources,
      .num_resources          = ARRAY_SIZE(kirkwood_uart1_resources),
};

void __init kirkwood_uart1_init(void)
{
      platform_device_register(&kirkwood_uart1);
}


/*****************************************************************************
 * Cryptographic Engines and Security Accelerator (CESA)
 ****************************************************************************/

static struct resource kirkwood_crypto_res[] = {
      {
            .name   = "regs",
            .start  = CRYPTO_PHYS_BASE,
            .end    = CRYPTO_PHYS_BASE + 0xffff,
            .flags  = IORESOURCE_MEM,
      }, {
            .name   = "sram",
            .start  = KIRKWOOD_SRAM_PHYS_BASE,
            .end    = KIRKWOOD_SRAM_PHYS_BASE + KIRKWOOD_SRAM_SIZE - 1,
            .flags  = IORESOURCE_MEM,
      }, {
            .name   = "crypto interrupt",
            .start  = IRQ_KIRKWOOD_CRYPTO,
            .end    = IRQ_KIRKWOOD_CRYPTO,
            .flags  = IORESOURCE_IRQ,
      },
};

static struct platform_device kirkwood_crypto_device = {
      .name           = "mv_crypto",
      .id             = -1,
      .num_resources  = ARRAY_SIZE(kirkwood_crypto_res),
      .resource       = kirkwood_crypto_res,
};

void __init kirkwood_crypto_init(void)
{
      kirkwood_clk_ctrl |= CGC_CRYPTO;
      platform_device_register(&kirkwood_crypto_device);
}


/*****************************************************************************
 * XOR
 ****************************************************************************/
static struct mv_xor_platform_shared_data kirkwood_xor_shared_data = {
      .dram       = &kirkwood_mbus_dram_info,
};

static u64 kirkwood_xor_dmamask = DMA_BIT_MASK(32);


/*****************************************************************************
 * XOR0
 ****************************************************************************/
static struct resource kirkwood_xor0_shared_resources[] = {
      {
            .name = "xor 0 low",
            .start      = XOR0_PHYS_BASE,
            .end  = XOR0_PHYS_BASE + 0xff,
            .flags      = IORESOURCE_MEM,
      }, {
            .name = "xor 0 high",
            .start      = XOR0_HIGH_PHYS_BASE,
            .end  = XOR0_HIGH_PHYS_BASE + 0xff,
            .flags      = IORESOURCE_MEM,
      },
};

static struct platform_device kirkwood_xor0_shared = {
      .name       = MV_XOR_SHARED_NAME,
      .id         = 0,
      .dev        = {
            .platform_data = &kirkwood_xor_shared_data,
      },
      .num_resources    = ARRAY_SIZE(kirkwood_xor0_shared_resources),
      .resource   = kirkwood_xor0_shared_resources,
};

static struct resource kirkwood_xor00_resources[] = {
      [0] = {
            .start      = IRQ_KIRKWOOD_XOR_00,
            .end  = IRQ_KIRKWOOD_XOR_00,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct mv_xor_platform_data kirkwood_xor00_data = {
      .shared           = &kirkwood_xor0_shared,
      .hw_id            = 0,
      .pool_size  = PAGE_SIZE,
};

static struct platform_device kirkwood_xor00_channel = {
      .name       = MV_XOR_NAME,
      .id         = 0,
      .num_resources    = ARRAY_SIZE(kirkwood_xor00_resources),
      .resource   = kirkwood_xor00_resources,
      .dev        = {
            .dma_mask         = &kirkwood_xor_dmamask,
            .coherent_dma_mask      = DMA_BIT_MASK(64),
            .platform_data          = (void *)&kirkwood_xor00_data,
      },
};

static struct resource kirkwood_xor01_resources[] = {
      [0] = {
            .start      = IRQ_KIRKWOOD_XOR_01,
            .end  = IRQ_KIRKWOOD_XOR_01,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct mv_xor_platform_data kirkwood_xor01_data = {
      .shared           = &kirkwood_xor0_shared,
      .hw_id            = 1,
      .pool_size  = PAGE_SIZE,
};

static struct platform_device kirkwood_xor01_channel = {
      .name       = MV_XOR_NAME,
      .id         = 1,
      .num_resources    = ARRAY_SIZE(kirkwood_xor01_resources),
      .resource   = kirkwood_xor01_resources,
      .dev        = {
            .dma_mask         = &kirkwood_xor_dmamask,
            .coherent_dma_mask      = DMA_BIT_MASK(64),
            .platform_data          = (void *)&kirkwood_xor01_data,
      },
};

static void __init kirkwood_xor0_init(void)
{
      kirkwood_clk_ctrl |= CGC_XOR0;
      platform_device_register(&kirkwood_xor0_shared);

      /*
       * two engines can't do memset simultaneously, this limitation
       * satisfied by removing memset support from one of the engines.
       */
      dma_cap_set(DMA_MEMCPY, kirkwood_xor00_data.cap_mask);
      dma_cap_set(DMA_XOR, kirkwood_xor00_data.cap_mask);
      platform_device_register(&kirkwood_xor00_channel);

      dma_cap_set(DMA_MEMCPY, kirkwood_xor01_data.cap_mask);
      dma_cap_set(DMA_MEMSET, kirkwood_xor01_data.cap_mask);
      dma_cap_set(DMA_XOR, kirkwood_xor01_data.cap_mask);
      platform_device_register(&kirkwood_xor01_channel);
}


/*****************************************************************************
 * XOR1
 ****************************************************************************/
static struct resource kirkwood_xor1_shared_resources[] = {
      {
            .name = "xor 1 low",
            .start      = XOR1_PHYS_BASE,
            .end  = XOR1_PHYS_BASE + 0xff,
            .flags      = IORESOURCE_MEM,
      }, {
            .name = "xor 1 high",
            .start      = XOR1_HIGH_PHYS_BASE,
            .end  = XOR1_HIGH_PHYS_BASE + 0xff,
            .flags      = IORESOURCE_MEM,
      },
};

static struct platform_device kirkwood_xor1_shared = {
      .name       = MV_XOR_SHARED_NAME,
      .id         = 1,
      .dev        = {
            .platform_data = &kirkwood_xor_shared_data,
      },
      .num_resources    = ARRAY_SIZE(kirkwood_xor1_shared_resources),
      .resource   = kirkwood_xor1_shared_resources,
};

static struct resource kirkwood_xor10_resources[] = {
      [0] = {
            .start      = IRQ_KIRKWOOD_XOR_10,
            .end  = IRQ_KIRKWOOD_XOR_10,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct mv_xor_platform_data kirkwood_xor10_data = {
      .shared           = &kirkwood_xor1_shared,
      .hw_id            = 0,
      .pool_size  = PAGE_SIZE,
};

static struct platform_device kirkwood_xor10_channel = {
      .name       = MV_XOR_NAME,
      .id         = 2,
      .num_resources    = ARRAY_SIZE(kirkwood_xor10_resources),
      .resource   = kirkwood_xor10_resources,
      .dev        = {
            .dma_mask         = &kirkwood_xor_dmamask,
            .coherent_dma_mask      = DMA_BIT_MASK(64),
            .platform_data          = (void *)&kirkwood_xor10_data,
      },
};

static struct resource kirkwood_xor11_resources[] = {
      [0] = {
            .start      = IRQ_KIRKWOOD_XOR_11,
            .end  = IRQ_KIRKWOOD_XOR_11,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct mv_xor_platform_data kirkwood_xor11_data = {
      .shared           = &kirkwood_xor1_shared,
      .hw_id            = 1,
      .pool_size  = PAGE_SIZE,
};

static struct platform_device kirkwood_xor11_channel = {
      .name       = MV_XOR_NAME,
      .id         = 3,
      .num_resources    = ARRAY_SIZE(kirkwood_xor11_resources),
      .resource   = kirkwood_xor11_resources,
      .dev        = {
            .dma_mask         = &kirkwood_xor_dmamask,
            .coherent_dma_mask      = DMA_BIT_MASK(64),
            .platform_data          = (void *)&kirkwood_xor11_data,
      },
};

static void __init kirkwood_xor1_init(void)
{
      kirkwood_clk_ctrl |= CGC_XOR1;
      platform_device_register(&kirkwood_xor1_shared);

      /*
       * two engines can't do memset simultaneously, this limitation
       * satisfied by removing memset support from one of the engines.
       */
      dma_cap_set(DMA_MEMCPY, kirkwood_xor10_data.cap_mask);
      dma_cap_set(DMA_XOR, kirkwood_xor10_data.cap_mask);
      platform_device_register(&kirkwood_xor10_channel);

      dma_cap_set(DMA_MEMCPY, kirkwood_xor11_data.cap_mask);
      dma_cap_set(DMA_MEMSET, kirkwood_xor11_data.cap_mask);
      dma_cap_set(DMA_XOR, kirkwood_xor11_data.cap_mask);
      platform_device_register(&kirkwood_xor11_channel);
}


/*****************************************************************************
 * Watchdog
 ****************************************************************************/
static struct orion_wdt_platform_data kirkwood_wdt_data = {
      .tclk       = 0,
};

static struct platform_device kirkwood_wdt_device = {
      .name       = "orion_wdt",
      .id         = -1,
      .dev        = {
            .platform_data    = &kirkwood_wdt_data,
      },
      .num_resources    = 0,
};

static void __init kirkwood_wdt_init(void)
{
      kirkwood_wdt_data.tclk = kirkwood_tclk;
      platform_device_register(&kirkwood_wdt_device);
}


/*****************************************************************************
 * Time handling
 ****************************************************************************/
int kirkwood_tclk;

int __init kirkwood_find_tclk(void)
{
      u32 dev, rev;

      kirkwood_pcie_id(&dev, &rev);
      if (dev == MV88F6281_DEV_ID && (rev == MV88F6281_REV_A0 ||
                              rev == MV88F6281_REV_A1))
            return 200000000;

      return 166666667;
}

static void __init kirkwood_timer_init(void)
{
      kirkwood_tclk = kirkwood_find_tclk();
      orion_time_init(IRQ_KIRKWOOD_BRIDGE, kirkwood_tclk);
}

struct sys_timer kirkwood_timer = {
      .init = kirkwood_timer_init,
};


/*****************************************************************************
 * General
 ****************************************************************************/
/*
 * Identify device ID and revision.
 */
static char * __init kirkwood_id(void)
{
      u32 dev, rev;

      kirkwood_pcie_id(&dev, &rev);

      if (dev == MV88F6281_DEV_ID) {
            if (rev == MV88F6281_REV_Z0)
                  return "MV88F6281-Z0";
            else if (rev == MV88F6281_REV_A0)
                  return "MV88F6281-A0";
            else if (rev == MV88F6281_REV_A1)
                  return "MV88F6281-A1";
            else
                  return "MV88F6281-Rev-Unsupported";
      } else if (dev == MV88F6192_DEV_ID) {
            if (rev == MV88F6192_REV_Z0)
                  return "MV88F6192-Z0";
            else if (rev == MV88F6192_REV_A0)
                  return "MV88F6192-A0";
            else
                  return "MV88F6192-Rev-Unsupported";
      } else if (dev == MV88F6180_DEV_ID) {
            if (rev == MV88F6180_REV_A0)
                  return "MV88F6180-Rev-A0";
            else
                  return "MV88F6180-Rev-Unsupported";
      } else {
            return "Device-Unknown";
      }
}

static void __init kirkwood_l2_init(void)
{
#ifdef CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH
      writel(readl(L2_CONFIG_REG) | L2_WRITETHROUGH, L2_CONFIG_REG);
      feroceon_l2_init(1);
#else
      writel(readl(L2_CONFIG_REG) & ~L2_WRITETHROUGH, L2_CONFIG_REG);
      feroceon_l2_init(0);
#endif
}

void __init kirkwood_init(void)
{
      printk(KERN_INFO "Kirkwood: %s, TCLK=%d.\n",
            kirkwood_id(), kirkwood_tclk);
      kirkwood_ge00_shared_data.t_clk = kirkwood_tclk;
      kirkwood_ge01_shared_data.t_clk = kirkwood_tclk;
      kirkwood_spi_plat_data.tclk = kirkwood_tclk;
      kirkwood_uart0_data[0].uartclk = kirkwood_tclk;
      kirkwood_uart1_data[0].uartclk = kirkwood_tclk;

      /*
       * Disable propagation of mbus errors to the CPU local bus,
       * as this causes mbus errors (which can occur for example
       * for PCI aborts) to throw CPU aborts, which we're not set
       * up to deal with.
       */
      writel(readl(CPU_CONFIG) & ~CPU_CONFIG_ERROR_PROP, CPU_CONFIG);

      kirkwood_setup_cpu_mbus();

#ifdef CONFIG_CACHE_FEROCEON_L2
      kirkwood_l2_init();
#endif

      /* internal devices that every board has */
      kirkwood_rtc_init();
      kirkwood_wdt_init();
      kirkwood_xor0_init();
      kirkwood_xor1_init();
      kirkwood_crypto_init();
}

static int __init kirkwood_clock_gate(void)
{
      unsigned int curr = readl(CLOCK_GATING_CTRL);

      printk(KERN_DEBUG "Gating clock of unused units\n");
      printk(KERN_DEBUG "before: 0x%08x\n", curr);

      /* Make sure those units are accessible */
      writel(curr | CGC_SATA0 | CGC_SATA1 | CGC_PEX0, CLOCK_GATING_CTRL);

      /* For SATA: first shutdown the phy */
      if (!(kirkwood_clk_ctrl & CGC_SATA0)) {
            /* Disable PLL and IVREF */
            writel(readl(SATA0_PHY_MODE_2) & ~0xf, SATA0_PHY_MODE_2);
            /* Disable PHY */
            writel(readl(SATA0_IF_CTRL) | 0x200, SATA0_IF_CTRL);
      }
      if (!(kirkwood_clk_ctrl & CGC_SATA1)) {
            /* Disable PLL and IVREF */
            writel(readl(SATA1_PHY_MODE_2) & ~0xf, SATA1_PHY_MODE_2);
            /* Disable PHY */
            writel(readl(SATA1_IF_CTRL) | 0x200, SATA1_IF_CTRL);
      }
      
      /* For PCIe: first shutdown the phy */
      if (!(kirkwood_clk_ctrl & CGC_PEX0)) {
            writel(readl(PCIE_LINK_CTRL) | 0x10, PCIE_LINK_CTRL);
            while (1)
                  if (readl(PCIE_STATUS) & 0x1)
                        break;
            writel(readl(PCIE_LINK_CTRL) & ~0x10, PCIE_LINK_CTRL);
      }

      /* Now gate clock the required units */
      writel(kirkwood_clk_ctrl, CLOCK_GATING_CTRL);
      printk(KERN_DEBUG " after: 0x%08x\n", readl(CLOCK_GATING_CTRL));

      return 0;
}
late_initcall(kirkwood_clock_gate);

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