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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 <linux/amba/pl061.h>
#include <linux/amba/mmci.h>
#include <linux/io.h>

#include <mach/hardware.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/hardware/cache-l2x0.h>
#include <asm/localtimer.h>

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

#include <mach/board-eb.h>
#include <mach/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_EB_GIC_CPU_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_EB_GIC_CPU_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = IO_ADDRESS(REALVIEW_EB_GIC_DIST_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_EB_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_EB_TIMER0_1_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_EB_TIMER0_1_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = IO_ADDRESS(REALVIEW_EB_TIMER2_3_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_EB_TIMER2_3_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      },
#ifdef CONFIG_DEBUG_LL
      {
            .virtual    = IO_ADDRESS(REALVIEW_EB_UART0_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_EB_UART0_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }
#endif
};

static struct map_desc realview_eb11mp_io_desc[] __initdata = {
      {
            .virtual    = IO_ADDRESS(REALVIEW_EB11MP_GIC_CPU_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_EB11MP_GIC_CPU_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = IO_ADDRESS(REALVIEW_EB11MP_GIC_DIST_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_EB11MP_GIC_DIST_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = IO_ADDRESS(REALVIEW_EB11MP_L220_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_EB11MP_L220_BASE),
            .length           = SZ_8K,
            .type       = MT_DEVICE,
      }
};

static void __init realview_eb_map_io(void)
{
      iotable_init(realview_eb_io_desc, ARRAY_SIZE(realview_eb_io_desc));
      if (core_tile_eb11mp() || core_tile_a9mp())
            iotable_init(realview_eb11mp_io_desc, ARRAY_SIZE(realview_eb11mp_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,
};

/*
 * RealView EB AMBA devices
 */

/*
 * These devices are connected via the core APB bridge
 */
#define GPIO2_IRQ { IRQ_EB_GPIO2, NO_IRQ }
#define GPIO2_DMA { 0, 0 }
#define GPIO3_IRQ { IRQ_EB_GPIO3, NO_IRQ }
#define GPIO3_DMA { 0, 0 }

#define AACI_IRQ  { IRQ_EB_AACI, NO_IRQ }
#define AACI_DMA  { 0x80, 0x81 }
#define MMCI0_IRQ { IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
#define MMCI0_DMA { 0x84, 0 }
#define KMI0_IRQ  { IRQ_EB_KMI0, NO_IRQ }
#define KMI0_DMA  { 0, 0 }
#define KMI1_IRQ  { IRQ_EB_KMI1, NO_IRQ }
#define KMI1_DMA  { 0, 0 }

/*
 * These devices are connected directly to the multi-layer AHB switch
 */
#define EB_SMC_IRQ      { NO_IRQ, NO_IRQ }
#define EB_SMC_DMA      { 0, 0 }
#define MPMC_IRQ  { NO_IRQ, NO_IRQ }
#define MPMC_DMA  { 0, 0 }
#define EB_CLCD_IRQ     { IRQ_EB_CLCD, NO_IRQ }
#define EB_CLCD_DMA     { 0, 0 }
#define DMAC_IRQ  { IRQ_EB_DMA, NO_IRQ }
#define DMAC_DMA  { 0, 0 }

/*
 * These devices are connected via the core APB bridge
 */
#define SCTL_IRQ  { NO_IRQ, NO_IRQ }
#define SCTL_DMA  { 0, 0 }
#define EB_WATCHDOG_IRQ { IRQ_EB_WDOG, NO_IRQ }
#define EB_WATCHDOG_DMA { 0, 0 }
#define EB_GPIO0_IRQ    { IRQ_EB_GPIO0, NO_IRQ }
#define EB_GPIO0_DMA    { 0, 0 }
#define GPIO1_IRQ { IRQ_EB_GPIO1, NO_IRQ }
#define GPIO1_DMA { 0, 0 }
#define EB_RTC_IRQ      { IRQ_EB_RTC, NO_IRQ }
#define EB_RTC_DMA      { 0, 0 }

/*
 * These devices are connected via the DMA APB bridge
 */
#define SCI_IRQ         { IRQ_EB_SCI, NO_IRQ }
#define SCI_DMA         { 7, 6 }
#define EB_UART0_IRQ    { IRQ_EB_UART0, NO_IRQ }
#define EB_UART0_DMA    { 15, 14 }
#define EB_UART1_IRQ    { IRQ_EB_UART1, NO_IRQ }
#define EB_UART1_DMA    { 13, 12 }
#define EB_UART2_IRQ    { IRQ_EB_UART2, NO_IRQ }
#define EB_UART2_DMA    { 11, 10 }
#define EB_UART3_IRQ    { IRQ_EB_UART3, NO_IRQ }
#define EB_UART3_DMA    { 0x86, 0x87 }
#define EB_SSP_IRQ      { IRQ_EB_SSP, NO_IRQ }
#define EB_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", EB_UART3, NULL);

/* DevChip Primecells */
AMBA_DEVICE(smc,   "dev:smc",   EB_SMC,   NULL);
AMBA_DEVICE(clcd,  "dev:clcd",  EB_CLCD,  &clcd_plat_data);
AMBA_DEVICE(dmac,  "dev:dmac",  DMAC,     NULL);
AMBA_DEVICE(sctl,  "dev:sctl",  SCTL,     NULL);
AMBA_DEVICE(wdog,  "dev:wdog",  EB_WATCHDOG, NULL);
AMBA_DEVICE(gpio0, "dev:gpio0", EB_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",   EB_RTC,   NULL);
AMBA_DEVICE(sci0,  "dev:sci0",  SCI,      NULL);
AMBA_DEVICE(uart0, "dev:uart0", EB_UART0, NULL);
AMBA_DEVICE(uart1, "dev:uart1", EB_UART1, NULL);
AMBA_DEVICE(uart2, "dev:uart2", EB_UART2, NULL);
AMBA_DEVICE(ssp0,  "dev:ssp0",  EB_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,
};

/*
 * RealView EB platform devices
 */
static struct resource realview_eb_flash_resource = {
      .start                  = REALVIEW_EB_FLASH_BASE,
      .end              = REALVIEW_EB_FLASH_BASE + REALVIEW_EB_FLASH_SIZE - 1,
      .flags                  = IORESOURCE_MEM,
};

static struct resource realview_eb_eth_resources[] = {
      [0] = {
            .start            = REALVIEW_EB_ETH_BASE,
            .end        = REALVIEW_EB_ETH_BASE + SZ_64K - 1,
            .flags            = IORESOURCE_MEM,
      },
      [1] = {
            .start            = IRQ_EB_ETH,
            .end        = IRQ_EB_ETH,
            .flags            = IORESOURCE_IRQ,
      },
};

/*
 * Detect and register the correct Ethernet device. RealView/EB rev D
 * platforms use the newer SMSC LAN9118 Ethernet chip
 */
static int eth_device_register(void)
{
      void __iomem *eth_addr = ioremap(REALVIEW_EB_ETH_BASE, SZ_4K);
      const char *name = NULL;
      u32 idrev;

      if (!eth_addr)
            return -ENOMEM;

      idrev = readl(eth_addr + 0x50);
      if ((idrev & 0xFFFF0000) != 0x01180000)
            /* SMSC LAN9118 not present, use LAN91C111 instead */
            name = "smc91x";

      iounmap(eth_addr);
      return realview_eth_register(name, realview_eb_eth_resources);
}

static struct resource realview_eb_isp1761_resources[] = {
      [0] = {
            .start            = REALVIEW_EB_USB_BASE,
            .end        = REALVIEW_EB_USB_BASE + SZ_128K - 1,
            .flags            = IORESOURCE_MEM,
      },
      [1] = {
            .start            = IRQ_EB_USB,
            .end        = IRQ_EB_USB,
            .flags            = IORESOURCE_IRQ,
      },
};

static void __init gic_init_irq(void)
{
      if (core_tile_eb11mp() || core_tile_a9mp()) {
            unsigned int pldctrl;

            /* new irq mode */
            writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
            pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
            pldctrl |= 0x00800000;
            writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
            writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));

            /* core tile GIC, primary */
            gic_cpu_base_addr = __io_address(REALVIEW_EB11MP_GIC_CPU_BASE);
            gic_dist_init(0, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE), 29);
            gic_cpu_init(0, gic_cpu_base_addr);

#ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
            /* board GIC, secondary */
            gic_dist_init(1, __io_address(REALVIEW_EB_GIC_DIST_BASE), 64);
            gic_cpu_init(1, __io_address(REALVIEW_EB_GIC_CPU_BASE));
            gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
#endif
      } else {
            /* board GIC, primary */
            gic_cpu_base_addr = __io_address(REALVIEW_EB_GIC_CPU_BASE);
            gic_dist_init(0, __io_address(REALVIEW_EB_GIC_DIST_BASE), 29);
            gic_cpu_init(0, gic_cpu_base_addr);
      }
}

/*
 * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
 */
static void realview_eb11mp_fixup(void)
{
      /* AMBA devices */
      dmac_device.irq[0]      = IRQ_EB11MP_DMA;
      uart0_device.irq[0]     = IRQ_EB11MP_UART0;
      uart1_device.irq[0]     = IRQ_EB11MP_UART1;
      uart2_device.irq[0]     = IRQ_EB11MP_UART2;
      uart3_device.irq[0]     = IRQ_EB11MP_UART3;
      clcd_device.irq[0]      = IRQ_EB11MP_CLCD;
      wdog_device.irq[0]      = IRQ_EB11MP_WDOG;
      gpio0_device.irq[0]     = IRQ_EB11MP_GPIO0;
      gpio1_device.irq[0]     = IRQ_EB11MP_GPIO1;
      gpio2_device.irq[0]     = IRQ_EB11MP_GPIO2;
      rtc_device.irq[0] = IRQ_EB11MP_RTC;
      sci0_device.irq[0]      = IRQ_EB11MP_SCI;
      ssp0_device.irq[0]      = IRQ_EB11MP_SSP;
      aaci_device.irq[0]      = IRQ_EB11MP_AACI;
      mmc0_device.irq[0]      = IRQ_EB11MP_MMCI0A;
      mmc0_device.irq[1]      = IRQ_EB11MP_MMCI0B;
      kmi0_device.irq[0]      = IRQ_EB11MP_KMI0;
      kmi1_device.irq[0]      = IRQ_EB11MP_KMI1;

      /* platform devices */
      realview_eb_eth_resources[1].start  = IRQ_EB11MP_ETH;
      realview_eb_eth_resources[1].end    = IRQ_EB11MP_ETH;
      realview_eb_isp1761_resources[1].start    = IRQ_EB11MP_USB;
      realview_eb_isp1761_resources[1].end      = IRQ_EB11MP_USB;
}

static void __init realview_eb_timer_init(void)
{
      unsigned int timer_irq;

      timer0_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE);
      timer1_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE) + 0x20;
      timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE);
      timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20;

      if (core_tile_eb11mp() || core_tile_a9mp()) {
#ifdef CONFIG_LOCAL_TIMERS
            twd_base = __io_address(REALVIEW_EB11MP_TWD_BASE);
#endif
            timer_irq = IRQ_EB11MP_TIMER0_1;
      } else
            timer_irq = IRQ_EB_TIMER0_1;

      realview_timer_init(timer_irq);
}

static struct sys_timer realview_eb_timer = {
      .init       = realview_eb_timer_init,
};

static void __init realview_eb_init(void)
{
      int i;

      if (core_tile_eb11mp() || core_tile_a9mp()) {
            realview_eb11mp_fixup();

#ifdef CONFIG_CACHE_L2X0
            /* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled
             * Bits:  .... ...0 0111 1001 0000 .... .... .... */
            l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff);
#endif
      }

      realview_flash_register(&realview_eb_flash_resource, 1);
      platform_device_register(&realview_i2c_device);
      eth_device_register();
      realview_usb_register(realview_eb_isp1761_resources);

      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_EB_UART0_BASE,
      .io_pg_offst      = (IO_ADDRESS(REALVIEW_EB_UART0_BASE) >> 18) & 0xfffc,
      .boot_params      = PHYS_OFFSET + 0x00000100,
      .fixup            = realview_fixup,
      .map_io           = realview_eb_map_io,
      .init_irq   = gic_init_irq,
      .timer            = &realview_eb_timer,
      .init_machine     = realview_eb_init,
MACHINE_END

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