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realview_pb1176.c

/*
 *  linux/arch/arm/mach-realview/realview_pb1176.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/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/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>

#include <mach/board-pb1176.h>
#include <mach/irqs.h>

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

static struct map_desc realview_pb1176_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_PB1176_GIC_CPU_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_PB1176_GIC_CPU_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = IO_ADDRESS(REALVIEW_PB1176_GIC_DIST_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_PB1176_GIC_DIST_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = IO_ADDRESS(REALVIEW_DC1176_GIC_CPU_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_DC1176_GIC_CPU_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = IO_ADDRESS(REALVIEW_DC1176_GIC_DIST_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_DC1176_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_PB1176_TIMER0_1_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_PB1176_TIMER0_1_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = IO_ADDRESS(REALVIEW_PB1176_TIMER2_3_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_PB1176_TIMER2_3_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = IO_ADDRESS(REALVIEW_PB1176_L220_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_PB1176_L220_BASE),
            .length           = SZ_8K,
            .type       = MT_DEVICE,
      },
#ifdef CONFIG_DEBUG_LL
      {
            .virtual    = IO_ADDRESS(REALVIEW_PB1176_UART0_BASE),
            .pfn        = __phys_to_pfn(REALVIEW_PB1176_UART0_BASE),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      },
#endif
};

static void __init realview_pb1176_map_io(void)
{
      iotable_init(realview_pb1176_io_desc, ARRAY_SIZE(realview_pb1176_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 PB1176 AMBA devices
 */
#define GPIO2_IRQ { IRQ_PB1176_GPIO2, NO_IRQ }
#define GPIO2_DMA { 0, 0 }
#define GPIO3_IRQ { IRQ_PB1176_GPIO3, NO_IRQ }
#define GPIO3_DMA { 0, 0 }
#define AACI_IRQ  { IRQ_PB1176_AACI, NO_IRQ }
#define AACI_DMA  { 0x80, 0x81 }
#define MMCI0_IRQ { IRQ_PB1176_MMCI0A, IRQ_PB1176_MMCI0B }
#define MMCI0_DMA { 0x84, 0 }
#define KMI0_IRQ  { IRQ_PB1176_KMI0, NO_IRQ }
#define KMI0_DMA  { 0, 0 }
#define KMI1_IRQ  { IRQ_PB1176_KMI1, NO_IRQ }
#define KMI1_DMA  { 0, 0 }
#define PB1176_SMC_IRQ  { NO_IRQ, NO_IRQ }
#define PB1176_SMC_DMA  { 0, 0 }
#define MPMC_IRQ  { NO_IRQ, NO_IRQ }
#define MPMC_DMA  { 0, 0 }
#define PB1176_CLCD_IRQ { IRQ_DC1176_CLCD, NO_IRQ }
#define PB1176_CLCD_DMA { 0, 0 }
#define DMAC_IRQ  { IRQ_PB1176_DMAC, NO_IRQ }
#define DMAC_DMA  { 0, 0 }
#define SCTL_IRQ  { NO_IRQ, NO_IRQ }
#define SCTL_DMA  { 0, 0 }
#define PB1176_WATCHDOG_IRQ   { IRQ_DC1176_WATCHDOG, NO_IRQ }
#define PB1176_WATCHDOG_DMA   { 0, 0 }
#define PB1176_GPIO0_IRQ      { IRQ_PB1176_GPIO0, NO_IRQ }
#define PB1176_GPIO0_DMA      { 0, 0 }
#define GPIO1_IRQ { IRQ_PB1176_GPIO1, NO_IRQ }
#define GPIO1_DMA { 0, 0 }
#define PB1176_RTC_IRQ  { IRQ_DC1176_RTC, NO_IRQ }
#define PB1176_RTC_DMA  { 0, 0 }
#define SCI_IRQ         { IRQ_PB1176_SCI, NO_IRQ }
#define SCI_DMA         { 7, 6 }
#define PB1176_UART0_IRQ      { IRQ_DC1176_UART0, NO_IRQ }
#define PB1176_UART0_DMA      { 15, 14 }
#define PB1176_UART1_IRQ      { IRQ_DC1176_UART1, NO_IRQ }
#define PB1176_UART1_DMA      { 13, 12 }
#define PB1176_UART2_IRQ      { IRQ_DC1176_UART2, NO_IRQ }
#define PB1176_UART2_DMA      { 11, 10 }
#define PB1176_UART3_IRQ      { IRQ_DC1176_UART3, NO_IRQ }
#define PB1176_UART3_DMA      { 0x86, 0x87 }
#define PB1176_SSP_IRQ        { IRQ_PB1176_SSP, NO_IRQ }
#define PB1176_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",     PB1176_UART3,     NULL);

/* DevChip Primecells */
AMBA_DEVICE(smc,  "dev:smc",  PB1176_SMC, NULL);
AMBA_DEVICE(sctl, "dev:sctl", SCTL,       NULL);
AMBA_DEVICE(wdog, "dev:wdog", PB1176_WATCHDOG,  NULL);
AMBA_DEVICE(gpio0,      "dev:gpio0",      PB1176_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",  PB1176_RTC, NULL);
AMBA_DEVICE(sci0, "dev:sci0", SCI,        NULL);
AMBA_DEVICE(uart0,      "dev:uart0",      PB1176_UART0,     NULL);
AMBA_DEVICE(uart1,      "dev:uart1",      PB1176_UART1,     NULL);
AMBA_DEVICE(uart2,      "dev:uart2",      PB1176_UART2,     NULL);
AMBA_DEVICE(ssp0, "dev:ssp0", PB1176_SSP, NULL);

/* Primecells on the NEC ISSP chip */
AMBA_DEVICE(clcd, "issp:clcd",      PB1176_CLCD,      &clcd_plat_data);
//AMBA_DEVICE(dmac,     "issp:dmac",      PB1176_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 PB1176 platform devices
 */
static struct resource realview_pb1176_flash_resources[] = {
      [0] = {
            .start            = REALVIEW_PB1176_FLASH_BASE,
            .end        = REALVIEW_PB1176_FLASH_BASE + REALVIEW_PB1176_FLASH_SIZE - 1,
            .flags            = IORESOURCE_MEM,
      },
      [1] = {
            .start            = REALVIEW_PB1176_SEC_FLASH_BASE,
            .end        = REALVIEW_PB1176_SEC_FLASH_BASE + REALVIEW_PB1176_SEC_FLASH_SIZE - 1,
            .flags            = IORESOURCE_MEM,
      },
};
#ifdef CONFIG_REALVIEW_PB1176_SECURE_FLASH
#define PB1176_FLASH_BLOCKS   2
#else
#define PB1176_FLASH_BLOCKS   1
#endif

static struct resource realview_pb1176_smsc911x_resources[] = {
      [0] = {
            .start            = REALVIEW_PB1176_ETH_BASE,
            .end        = REALVIEW_PB1176_ETH_BASE + SZ_64K - 1,
            .flags            = IORESOURCE_MEM,
      },
      [1] = {
            .start            = IRQ_PB1176_ETH,
            .end        = IRQ_PB1176_ETH,
            .flags            = IORESOURCE_IRQ,
      },
};

static struct resource realview_pb1176_isp1761_resources[] = {
      [0] = {
            .start            = REALVIEW_PB1176_USB_BASE,
            .end        = REALVIEW_PB1176_USB_BASE + SZ_128K - 1,
            .flags            = IORESOURCE_MEM,
      },
      [1] = {
            .start            = IRQ_PB1176_USB,
            .end        = IRQ_PB1176_USB,
            .flags            = IORESOURCE_IRQ,
      },
};

static void __init gic_init_irq(void)
{
      /* ARM1176 DevChip GIC, primary */
      gic_cpu_base_addr = __io_address(REALVIEW_DC1176_GIC_CPU_BASE);
      gic_dist_init(0, __io_address(REALVIEW_DC1176_GIC_DIST_BASE), IRQ_DC1176_GIC_START);
      gic_cpu_init(0, gic_cpu_base_addr);

      /* board GIC, secondary */
      gic_dist_init(1, __io_address(REALVIEW_PB1176_GIC_DIST_BASE), IRQ_PB1176_GIC_START);
      gic_cpu_init(1, __io_address(REALVIEW_PB1176_GIC_CPU_BASE));
      gic_cascade_irq(1, IRQ_DC1176_PB_IRQ1);
}

static void __init realview_pb1176_timer_init(void)
{
      timer0_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE);
      timer1_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE) + 0x20;
      timer2_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE);
      timer3_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE) + 0x20;

      realview_timer_init(IRQ_DC1176_TIMER0);
}

static struct sys_timer realview_pb1176_timer = {
      .init       = realview_pb1176_timer_init,
};

static void realview_pb1176_reset(char mode)
{
      void __iomem *hdr_ctrl = __io_address(REALVIEW_SYS_BASE) +
            REALVIEW_SYS_RESETCTL_OFFSET;
      void __iomem *rst_hdr_ctrl = __io_address(REALVIEW_SYS_BASE) +
            REALVIEW_SYS_LOCK_OFFSET;
      __raw_writel(REALVIEW_SYS_LOCKVAL_MASK, rst_hdr_ctrl);
      __raw_writel(REALVIEW_PB1176_SYS_LOCKVAL_RSTCTL, hdr_ctrl);
}

static void realview_pb1176_fixup(struct machine_desc *mdesc,
                          struct tag *tags, char **from,
                          struct meminfo *meminfo)
{
      /*
       * RealView PB1176 only has 128MB of RAM mapped at 0.
       */
      meminfo->bank[0].start = 0;
      meminfo->bank[0].size = SZ_128M;
      meminfo->nr_banks = 1;
}

static void __init realview_pb1176_init(void)
{
      int i;

#ifdef CONFIG_CACHE_L2X0
      /* 128Kb (16Kb/way) 8-way associativity. evmon/parity/share enabled. */
      l2x0_init(__io_address(REALVIEW_PB1176_L220_BASE), 0x00730000, 0xfe000fff);
#endif

      realview_flash_register(realview_pb1176_flash_resources,
                        PB1176_FLASH_BLOCKS);
      realview_eth_register(NULL, realview_pb1176_smsc911x_resources);
      platform_device_register(&realview_i2c_device);
      realview_usb_register(realview_pb1176_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
      realview_reset = realview_pb1176_reset;
}

MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
      /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
      .phys_io    = REALVIEW_PB1176_UART0_BASE,
      .io_pg_offst      = (IO_ADDRESS(REALVIEW_PB1176_UART0_BASE) >> 18) & 0xfffc,
      .boot_params      = PHYS_OFFSET + 0x00000100,
      .fixup            = realview_pb1176_fixup,
      .map_io           = realview_pb1176_map_io,
      .init_irq   = gic_init_irq,
      .timer            = &realview_pb1176_timer,
      .init_machine     = realview_pb1176_init,
MACHINE_END

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