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realview_eb.c

/*
 *  linux/arch/arm/mach-realview/realview_eb.c
 *
 *  Copyright (C) 2004 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 <asm/hardware.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/leds.h>
#include <asm/mach-types.h>
#include <asm/hardware/gic.h>
#include <asm/hardware/icst307.h>

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

#include <asm/arch/irqs.h>

#include "core.h"
#include "clock.h"

static struct map_desc realview_eb_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_GIC_CPU_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_GIC_CPU_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = IO_ADDRESS(REALVIEW_GIC_DIST_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_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_TIMER0_1_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_TIMER0_1_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = IO_ADDRESS(REALVIEW_TIMER2_3_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_TIMER2_3_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      },
#ifdef CONFIG_DEBUG_LL
      {
            .virtual    = IO_ADDRESS(REALVIEW_UART0_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_UART0_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }
#endif
};

static void __init realview_eb_map_io(void)
{
      iotable_init(realview_eb_io_desc, ARRAY_SIZE(realview_eb_io_desc));
}

/* FPGA Primecells */
AMBA_DEVICE(aaci,  "fpga:04", AACI,     NULL);
AMBA_DEVICE(mmc0,  "fpga:05", MMCI0,    &realview_mmc0_plat_data);
AMBA_DEVICE(kmi0,  "fpga:06", KMI0,     NULL);
AMBA_DEVICE(kmi1,  "fpga:07", KMI1,     NULL);
AMBA_DEVICE(uart3, "fpga:09", UART3,    NULL);

/* DevChip Primecells */
AMBA_DEVICE(smc,   "dev:00",  SMC,      NULL);
AMBA_DEVICE(clcd,  "dev:20",  CLCD,     &clcd_plat_data);
AMBA_DEVICE(dmac,  "dev:30",  DMAC,     NULL);
AMBA_DEVICE(sctl,  "dev:e0",  SCTL,     NULL);
AMBA_DEVICE(wdog,  "dev:e1",  WATCHDOG, NULL);
AMBA_DEVICE(gpio0, "dev:e4",  GPIO0,    NULL);
AMBA_DEVICE(gpio1, "dev:e5",  GPIO1,    NULL);
AMBA_DEVICE(gpio2, "dev:e6",  GPIO2,    NULL);
AMBA_DEVICE(rtc,   "dev:e8",  RTC,      NULL);
AMBA_DEVICE(sci0,  "dev:f0",  SCI,      NULL);
AMBA_DEVICE(uart0, "dev:f1",  UART0,    NULL);
AMBA_DEVICE(uart1, "dev:f2",  UART1,    NULL);
AMBA_DEVICE(uart2, "dev:f3",  UART2,    NULL);
AMBA_DEVICE(ssp0,  "dev:f4",  SSP,      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,
};

static void __init gic_init_irq(void)
{
#ifdef CONFIG_REALVIEW_MPCORE
      unsigned int pldctrl;
      writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
      pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + 0xd8);
      pldctrl |= 0x00800000;  /* New irq mode */
      writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + 0xd8);
      writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
#endif
      gic_dist_init(__io_address(REALVIEW_GIC_DIST_BASE));
      gic_cpu_init(__io_address(REALVIEW_GIC_CPU_BASE));
}

static void __init realview_eb_init(void)
{
      int i;

      clk_register(&realview_clcd_clk);

      platform_device_register(&realview_flash_device);
      platform_device_register(&realview_smc91x_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
}

MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
      /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
      .phys_io    = REALVIEW_UART0_BASE,
      .io_pg_offst      = (IO_ADDRESS(REALVIEW_UART0_BASE) >> 18) & 0xfffc,
      .boot_params      = 0x00000100,
      .map_io           = realview_eb_map_io,
      .init_irq   = gic_init_irq,
      .timer            = &realview_timer,
      .init_machine     = realview_eb_init,
MACHINE_END

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