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realview_pba8.c

/*
 *  linux/arch/arm/mach-realview/realview_pba8.c
 *
 *  Copyright (C) 2008 ARM Limited
 *  Copyright (C) 2000 Deep Blue Solutions Ltd
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/sysdev.h>
#include <linux/amba/bus.h>
#include <linux/amba/pl061.h>
#include <linux/amba/mmci.h>
#include <linux/amba/pl022.h>
#include <linux/io.h>

#include <asm/irq.h>
#include <asm/leds.h>
#include <asm/mach-types.h>
#include <asm/pmu.h>
#include <asm/pgtable.h>
#include <asm/hardware/gic.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>

#include <mach/hardware.h>
#include <mach/board-pba8.h>
#include <mach/irqs.h>

#include "core.h"

static struct map_desc realview_pba8_io_desc[] __initdata = {
      {
            .virtual    = IO_ADDRESS(REALVIEW_SYS_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_SYS_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = IO_ADDRESS(REALVIEW_PBA8_GIC_CPU_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_PBA8_GIC_CPU_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = IO_ADDRESS(REALVIEW_PBA8_GIC_DIST_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_PBA8_GIC_DIST_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = IO_ADDRESS(REALVIEW_SCTL_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_SCTL_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = IO_ADDRESS(REALVIEW_PBA8_TIMER0_1_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_PBA8_TIMER0_1_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = IO_ADDRESS(REALVIEW_PBA8_TIMER2_3_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_PBA8_TIMER2_3_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      },
#ifdef CONFIG_PCI
      {
            .virtual    = PCIX_UNIT_BASE,
            .pfn        = __phys_to_pfn(REALVIEW_PBA8_PCI_BASE),
            .length           = REALVIEW_PBA8_PCI_BASE_SIZE,
            .type       = MT_DEVICE
      },
#endif
#ifdef CONFIG_DEBUG_LL
      {
            .virtual    = IO_ADDRESS(REALVIEW_PBA8_UART0_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_PBA8_UART0_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      },
#endif
};

static void __init realview_pba8_map_io(void)
{
      iotable_init(realview_pba8_io_desc, ARRAY_SIZE(realview_pba8_io_desc));
}

static struct pl061_platform_data gpio0_plat_data = {
      .gpio_base  = 0,
      .irq_base   = -1,
};

static struct pl061_platform_data gpio1_plat_data = {
      .gpio_base  = 8,
      .irq_base   = -1,
};

static struct pl061_platform_data gpio2_plat_data = {
      .gpio_base  = 16,
      .irq_base   = -1,
};

static struct pl022_ssp_controller ssp0_plat_data = {
      .bus_id = 0,
      .enable_dma = 0,
      .num_chipselect = 1,
};

/*
 * RealView PBA8Core AMBA devices
 */

#define GPIO2_IRQ       { IRQ_PBA8_GPIO2, NO_IRQ }
#define GPIO2_DMA       { 0, 0 }
#define GPIO3_IRQ       { IRQ_PBA8_GPIO3, NO_IRQ }
#define GPIO3_DMA       { 0, 0 }
#define AACI_IRQ        { IRQ_PBA8_AACI, NO_IRQ }
#define AACI_DMA        { 0x80, 0x81 }
#define MMCI0_IRQ       { IRQ_PBA8_MMCI0A, IRQ_PBA8_MMCI0B }
#define MMCI0_DMA       { 0x84, 0 }
#define KMI0_IRQ        { IRQ_PBA8_KMI0, NO_IRQ }
#define KMI0_DMA        { 0, 0 }
#define KMI1_IRQ        { IRQ_PBA8_KMI1, NO_IRQ }
#define KMI1_DMA        { 0, 0 }
#define PBA8_SMC_IRQ          { NO_IRQ, NO_IRQ }
#define PBA8_SMC_DMA          { 0, 0 }
#define MPMC_IRQ        { NO_IRQ, NO_IRQ }
#define MPMC_DMA        { 0, 0 }
#define PBA8_CLCD_IRQ         { IRQ_PBA8_CLCD, NO_IRQ }
#define PBA8_CLCD_DMA         { 0, 0 }
#define DMAC_IRQ        { IRQ_PBA8_DMAC, NO_IRQ }
#define DMAC_DMA        { 0, 0 }
#define SCTL_IRQ        { NO_IRQ, NO_IRQ }
#define SCTL_DMA        { 0, 0 }
#define PBA8_WATCHDOG_IRQ     { IRQ_PBA8_WATCHDOG, NO_IRQ }
#define PBA8_WATCHDOG_DMA     { 0, 0 }
#define PBA8_GPIO0_IRQ        { IRQ_PBA8_GPIO0, NO_IRQ }
#define PBA8_GPIO0_DMA        { 0, 0 }
#define GPIO1_IRQ       { IRQ_PBA8_GPIO1, NO_IRQ }
#define GPIO1_DMA       { 0, 0 }
#define PBA8_RTC_IRQ          { IRQ_PBA8_RTC, NO_IRQ }
#define PBA8_RTC_DMA          { 0, 0 }
#define SCI_IRQ               { IRQ_PBA8_SCI, NO_IRQ }
#define SCI_DMA               { 7, 6 }
#define PBA8_UART0_IRQ        { IRQ_PBA8_UART0, NO_IRQ }
#define PBA8_UART0_DMA        { 15, 14 }
#define PBA8_UART1_IRQ        { IRQ_PBA8_UART1, NO_IRQ }
#define PBA8_UART1_DMA        { 13, 12 }
#define PBA8_UART2_IRQ        { IRQ_PBA8_UART2, NO_IRQ }
#define PBA8_UART2_DMA        { 11, 10 }
#define PBA8_UART3_IRQ        { IRQ_PBA8_UART3, NO_IRQ }
#define PBA8_UART3_DMA        { 0x86, 0x87 }
#define PBA8_SSP_IRQ          { IRQ_PBA8_SSP, NO_IRQ }
#define PBA8_SSP_DMA          { 9, 8 }

/* FPGA Primecells */
AMBA_DEVICE(aaci, "fpga:aaci",      AACI,       NULL);
AMBA_DEVICE(mmc0, "fpga:mmc0",      MMCI0,            &realview_mmc0_plat_data);
AMBA_DEVICE(kmi0, "fpga:kmi0",      KMI0,       NULL);
AMBA_DEVICE(kmi1, "fpga:kmi1",      KMI1,       NULL);
AMBA_DEVICE(uart3,      "fpga:uart3",     PBA8_UART3, NULL);

/* DevChip Primecells */
AMBA_DEVICE(smc,  "dev:smc",  PBA8_SMC,   NULL);
AMBA_DEVICE(sctl, "dev:sctl", SCTL,       NULL);
AMBA_DEVICE(wdog, "dev:wdog", PBA8_WATCHDOG, NULL);
AMBA_DEVICE(gpio0,      "dev:gpio0",      PBA8_GPIO0, &gpio0_plat_data);
AMBA_DEVICE(gpio1,      "dev:gpio1",      GPIO1,            &gpio1_plat_data);
AMBA_DEVICE(gpio2,      "dev:gpio2",      GPIO2,            &gpio2_plat_data);
AMBA_DEVICE(rtc,  "dev:rtc",  PBA8_RTC,   NULL);
AMBA_DEVICE(sci0, "dev:sci0", SCI,        NULL);
AMBA_DEVICE(uart0,      "dev:uart0",      PBA8_UART0, NULL);
AMBA_DEVICE(uart1,      "dev:uart1",      PBA8_UART1, NULL);
AMBA_DEVICE(uart2,      "dev:uart2",      PBA8_UART2, NULL);
AMBA_DEVICE(ssp0, "dev:ssp0", PBA8_SSP,   &ssp0_plat_data);

/* Primecells on the NEC ISSP chip */
AMBA_DEVICE(clcd, "issp:clcd",      PBA8_CLCD,  &clcd_plat_data);
AMBA_DEVICE(dmac, "issp:dmac",      DMAC,       NULL);

static struct amba_device *amba_devs[] __initdata = {
      &dmac_device,
      &uart0_device,
      &uart1_device,
      &uart2_device,
      &uart3_device,
      &smc_device,
      &clcd_device,
      &sctl_device,
      &wdog_device,
      &gpio0_device,
      &gpio1_device,
      &gpio2_device,
      &rtc_device,
      &sci0_device,
      &ssp0_device,
      &aaci_device,
      &mmc0_device,
      &kmi0_device,
      &kmi1_device,
};

/*
 * RealView PB-A8 platform devices
 */
static struct resource realview_pba8_flash_resource[] = {
      [0] = {
            .start            = REALVIEW_PBA8_FLASH0_BASE,
            .end        = REALVIEW_PBA8_FLASH0_BASE + REALVIEW_PBA8_FLASH0_SIZE - 1,
            .flags            = IORESOURCE_MEM,
      },
      [1] = {
            .start            = REALVIEW_PBA8_FLASH1_BASE,
            .end        = REALVIEW_PBA8_FLASH1_BASE + REALVIEW_PBA8_FLASH1_SIZE - 1,
            .flags            = IORESOURCE_MEM,
      },
};

static struct resource realview_pba8_smsc911x_resources[] = {
      [0] = {
            .start            = REALVIEW_PBA8_ETH_BASE,
            .end        = REALVIEW_PBA8_ETH_BASE + SZ_64K - 1,
            .flags            = IORESOURCE_MEM,
      },
      [1] = {
            .start            = IRQ_PBA8_ETH,
            .end        = IRQ_PBA8_ETH,
            .flags            = IORESOURCE_IRQ,
      },
};

static struct resource realview_pba8_isp1761_resources[] = {
      [0] = {
            .start            = REALVIEW_PBA8_USB_BASE,
            .end        = REALVIEW_PBA8_USB_BASE + SZ_128K - 1,
            .flags            = IORESOURCE_MEM,
      },
      [1] = {
            .start            = IRQ_PBA8_USB,
            .end        = IRQ_PBA8_USB,
            .flags            = IORESOURCE_IRQ,
      },
};

static struct resource pmu_resource = {
      .start            = IRQ_PBA8_PMU,
      .end        = IRQ_PBA8_PMU,
      .flags            = IORESOURCE_IRQ,
};

static struct platform_device pmu_device = {
      .name             = "arm-pmu",
      .id               = ARM_PMU_DEVICE_CPU,
      .num_resources          = 1,
      .resource         = &pmu_resource,
};

static void __init gic_init_irq(void)
{
      /* ARM PB-A8 on-board GIC */
      gic_init(0, IRQ_PBA8_GIC_START,
             __io_address(REALVIEW_PBA8_GIC_DIST_BASE),
             __io_address(REALVIEW_PBA8_GIC_CPU_BASE));
}

static void __init realview_pba8_timer_init(void)
{
      timer0_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE);
      timer1_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE) + 0x20;
      timer2_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE);
      timer3_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE) + 0x20;

      realview_timer_init(IRQ_PBA8_TIMER0_1);
}

static struct sys_timer realview_pba8_timer = {
      .init       = realview_pba8_timer_init,
};

static void realview_pba8_reset(char mode)
{
      void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
      void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);

      /*
       * To reset, we hit the on-board reset register
       * in the system FPGA
       */
      __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
      __raw_writel(0x0000, reset_ctrl);
      __raw_writel(0x0004, reset_ctrl);
}

static void __init realview_pba8_init(void)
{
      int i;

      realview_flash_register(realview_pba8_flash_resource,
                        ARRAY_SIZE(realview_pba8_flash_resource));
      realview_eth_register(NULL, realview_pba8_smsc911x_resources);
      platform_device_register(&realview_i2c_device);
      platform_device_register(&realview_cf_device);
      realview_usb_register(realview_pba8_isp1761_resources);
      platform_device_register(&pmu_device);

      for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
            struct amba_device *d = amba_devs[i];
            amba_device_register(d, &iomem_resource);
      }

#ifdef CONFIG_LEDS
      leds_event = realview_leds_event;
#endif
      realview_reset = realview_pba8_reset;
}

MACHINE_START(REALVIEW_PBA8, "ARM-RealView PB-A8")
      /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
      .boot_params      = PHYS_OFFSET + 0x00000100,
      .fixup            = realview_fixup,
      .map_io           = realview_pba8_map_io,
      .init_irq   = gic_init_irq,
      .timer            = &realview_pba8_timer,
      .init_machine     = realview_pba8_init,
MACHINE_END

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