text: /*
   *  arch/arm/mach-realview/realview_pbx.c
   *
   *  Copyright (C) 2009 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 version 2 as
   * published by the Free Software Foundation.
   *
   * 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/device.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/smp_twd.h>
  #include <asm/pgtable.h>
  #include <asm/hardware/gic.h>
  #include <asm/hardware/cache-l2x0.h>
  
  #include <asm/mach/arch.h>
  #include <asm/mach/map.h>
  #include <asm/mach/time.h>
  
  #include <mach/hardware.h>
  #include <mach/board-pbx.h>
  #include <mach/irqs.h>
  
  #include "core.h"
  
  static struct map_desc realview_pbx_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_PBX_GIC_CPU_BASE),
  		.pfn		= __phys_to_pfn(REALVIEW_PBX_GIC_CPU_BASE),
  		.length		= SZ_4K,
  		.type		= MT_DEVICE,
  	}, {
  		.virtual	= IO_ADDRESS(REALVIEW_PBX_GIC_DIST_BASE),
  		.pfn		= __phys_to_pfn(REALVIEW_PBX_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_PBX_TIMER0_1_BASE),
  		.pfn		= __phys_to_pfn(REALVIEW_PBX_TIMER0_1_BASE),
  		.length		= SZ_4K,
  		.type		= MT_DEVICE,
  	}, {
  		.virtual	= IO_ADDRESS(REALVIEW_PBX_TIMER2_3_BASE),
  		.pfn		= __phys_to_pfn(REALVIEW_PBX_TIMER2_3_BASE),
  		.length		= SZ_4K,
  		.type		= MT_DEVICE,
  	},
  #ifdef CONFIG_PCI
  	{
  		.virtual	= PCIX_UNIT_BASE,
  		.pfn		= __phys_to_pfn(REALVIEW_PBX_PCI_BASE),
  		.length		= REALVIEW_PBX_PCI_BASE_SIZE,
  		.type		= MT_DEVICE,
  	},
  #endif
  #ifdef CONFIG_DEBUG_LL
  	{
  		.virtual	= IO_ADDRESS(REALVIEW_PBX_UART0_BASE),
  		.pfn		= __phys_to_pfn(REALVIEW_PBX_UART0_BASE),
  		.length		= SZ_4K,
  		.type		= MT_DEVICE,
  	},
  #endif
  };
  
  static struct map_desc realview_local_io_desc[] __initdata = {
  	{
  		.virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_SCU_BASE),
  		.pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_SCU_BASE),
  		.length         = SZ_4K,
  		.type           = MT_DEVICE,
  	}, {
  		.virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_DIST_BASE),
  		.pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_DIST_BASE),
  		.length         = SZ_4K,
  		.type           = MT_DEVICE,
  	}, {
  		.virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_L220_BASE),
  		.pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_L220_BASE),
  		.length         = SZ_8K,
  		.type           = MT_DEVICE,
  	}
  };
  
  static void __init realview_pbx_map_io(void)
  {
  	iotable_init(realview_pbx_io_desc, ARRAY_SIZE(realview_pbx_io_desc));
  	if (core_tile_pbx11mp() || core_tile_pbxa9mp())
  		iotable_init(realview_local_io_desc, ARRAY_SIZE(realview_local_io_desc));
  }
  
  static struct pl061_platform_data gpio0_plat_data = {
  	.gpio_base	= 0,
  };
  
  static struct pl061_platform_data gpio1_plat_data = {
  	.gpio_base	= 8,
  };
  
  static struct pl061_platform_data gpio2_plat_data = {
  	.gpio_base	= 16,
  };
  
  static struct pl022_ssp_controller ssp0_plat_data = {
  	.bus_id = 0,
  	.enable_dma = 0,
  	.num_chipselect = 1,
  };
  
  /*
   * RealView PBXCore AMBA devices
   */
  
  #define GPIO2_IRQ		{ IRQ_PBX_GPIO2 }
  #define GPIO3_IRQ		{ IRQ_PBX_GPIO3 }
  #define AACI_IRQ		{ IRQ_PBX_AACI }
  #define MMCI0_IRQ		{ IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
  #define KMI0_IRQ		{ IRQ_PBX_KMI0 }
  #define KMI1_IRQ		{ IRQ_PBX_KMI1 }
  #define PBX_SMC_IRQ		{ }
  #define MPMC_IRQ		{ }
  #define PBX_CLCD_IRQ		{ IRQ_PBX_CLCD }
  #define DMAC_IRQ		{ IRQ_PBX_DMAC }
  #define SCTL_IRQ		{ }
  #define PBX_WATCHDOG_IRQ	{ IRQ_PBX_WATCHDOG }
  #define PBX_GPIO0_IRQ		{ IRQ_PBX_GPIO0 }
  #define GPIO1_IRQ		{ IRQ_PBX_GPIO1 }
  #define PBX_RTC_IRQ		{ IRQ_PBX_RTC }
  #define SCI_IRQ			{ IRQ_PBX_SCI }
  #define PBX_UART0_IRQ		{ IRQ_PBX_UART0 }
  #define PBX_UART1_IRQ		{ IRQ_PBX_UART1 }
  #define PBX_UART2_IRQ		{ IRQ_PBX_UART2 }
  #define PBX_UART3_IRQ		{ IRQ_PBX_UART3 }
  #define PBX_SSP_IRQ		{ IRQ_PBX_SSP }
  
  /* FPGA Primecells */
  APB_DEVICE(aaci,	"fpga:aaci",	AACI,		NULL);
  APB_DEVICE(mmc0,	"fpga:mmc0",	MMCI0,		&realview_mmc0_plat_data);
  APB_DEVICE(kmi0,	"fpga:kmi0",	KMI0,		NULL);
  APB_DEVICE(kmi1,	"fpga:kmi1",	KMI1,		NULL);
  APB_DEVICE(uart3,	"fpga:uart3",	PBX_UART3,	NULL);
  
  /* DevChip Primecells */
  AHB_DEVICE(smc,	"dev:smc",	PBX_SMC,	NULL);
  AHB_DEVICE(sctl,	"dev:sctl",	SCTL,		NULL);
  APB_DEVICE(wdog,	"dev:wdog",	PBX_WATCHDOG, 	NULL);
  APB_DEVICE(gpio0,	"dev:gpio0",	PBX_GPIO0,	&gpio0_plat_data);
  APB_DEVICE(gpio1,	"dev:gpio1",	GPIO1,		&gpio1_plat_data);
  APB_DEVICE(gpio2,	"dev:gpio2",	GPIO2,		&gpio2_plat_data);
  APB_DEVICE(rtc,		"dev:rtc",	PBX_RTC,	NULL);
  APB_DEVICE(sci0,	"dev:sci0",	SCI,		NULL);
  APB_DEVICE(uart0,	"dev:uart0",	PBX_UART0,	NULL);
  APB_DEVICE(uart1,	"dev:uart1",	PBX_UART1,	NULL);
  APB_DEVICE(uart2,	"dev:uart2",	PBX_UART2,	NULL);
  APB_DEVICE(ssp0,	"dev:ssp0",	PBX_SSP,	&ssp0_plat_data);
  
  /* Primecells on the NEC ISSP chip */
  AHB_DEVICE(clcd,	"issp:clcd",	PBX_CLCD,	&clcd_plat_data);
  AHB_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-X platform devices
   */
  static struct resource realview_pbx_flash_resources[] = {
  	[0] = {
  		.start          = REALVIEW_PBX_FLASH0_BASE,
  		.end            = REALVIEW_PBX_FLASH0_BASE + REALVIEW_PBX_FLASH0_SIZE - 1,
  		.flags          = IORESOURCE_MEM,
  	},
  	[1] = {
  		.start          = REALVIEW_PBX_FLASH1_BASE,
  		.end            = REALVIEW_PBX_FLASH1_BASE + REALVIEW_PBX_FLASH1_SIZE - 1,
  		.flags          = IORESOURCE_MEM,
  	},
  };
  
  static struct resource realview_pbx_smsc911x_resources[] = {
  	[0] = {
  		.start		= REALVIEW_PBX_ETH_BASE,
  		.end		= REALVIEW_PBX_ETH_BASE + SZ_64K - 1,
  		.flags		= IORESOURCE_MEM,
  	},
  	[1] = {
  		.start		= IRQ_PBX_ETH,
  		.end		= IRQ_PBX_ETH,
  		.flags		= IORESOURCE_IRQ,
  	},
  };
  
  static struct resource realview_pbx_isp1761_resources[] = {
  	[0] = {
  		.start		= REALVIEW_PBX_USB_BASE,
  		.end		= REALVIEW_PBX_USB_BASE + SZ_128K - 1,
  		.flags		= IORESOURCE_MEM,
  	},
  	[1] = {
  		.start		= IRQ_PBX_USB,
  		.end		= IRQ_PBX_USB,
  		.flags		= IORESOURCE_IRQ,
  	},
  };
  
  static struct resource pmu_resources[] = {
  	[0] = {
  		.start		= IRQ_PBX_PMU_CPU0,
  		.end		= IRQ_PBX_PMU_CPU0,
  		.flags		= IORESOURCE_IRQ,
  	},
  	[1] = {
  		.start		= IRQ_PBX_PMU_CPU1,
  		.end		= IRQ_PBX_PMU_CPU1,
  		.flags		= IORESOURCE_IRQ,
  	},
  	[2] = {
  		.start		= IRQ_PBX_PMU_CPU2,
  		.end		= IRQ_PBX_PMU_CPU2,
  		.flags		= IORESOURCE_IRQ,
  	},
  	[3] = {
  		.start		= IRQ_PBX_PMU_CPU3,
  		.end		= IRQ_PBX_PMU_CPU3,
  		.flags		= IORESOURCE_IRQ,
  	},
  };
  
  static struct platform_device pmu_device = {
  	.name			= "arm-pmu",
  	.id			= ARM_PMU_DEVICE_CPU,
  	.num_resources		= ARRAY_SIZE(pmu_resources),
  	.resource		= pmu_resources,
  };
  
  static void __init gic_init_irq(void)
  {
  	/* ARM PBX on-board GIC */
  	if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
  		gic_init(0, 29, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
  			 __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
  	} else {
  		gic_init(0, IRQ_PBX_GIC_START,
  			 __io_address(REALVIEW_PBX_GIC_DIST_BASE),
  			 __io_address(REALVIEW_PBX_GIC_CPU_BASE));
  	}
  }
  
  #ifdef CONFIG_HAVE_ARM_TWD
  static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
  			      REALVIEW_PBX_TILE_TWD_BASE,
  			      IRQ_LOCALTIMER);
  
  static void __init realview_pbx_twd_init(void)
  {
  	int err = twd_local_timer_register(&twd_local_timer);
  	if (err)
  		pr_err("twd_local_timer_register failed %d\n", err);
  }
  #else
  #define realview_pbx_twd_init()	do { } while(0)
  #endif
  
  static void __init realview_pbx_timer_init(void)
  {
  	timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE);
  	timer1_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE) + 0x20;
  	timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
  	timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
  
  	realview_timer_init(IRQ_PBX_TIMER0_1);
  	realview_pbx_twd_init();
  }
  
  static struct sys_timer realview_pbx_timer = {
  	.init		= realview_pbx_timer_init,
  };
  
  static void realview_pbx_fixup(struct tag *tags, char **from,
  			       struct meminfo *meminfo)
  {
  #ifdef CONFIG_SPARSEMEM
  	/*
  	 * Memory configuration with SPARSEMEM enabled on RealView PBX (see
  	 * asm/mach/memory.h for more information).
  	 */
  	meminfo->bank[0].start = 0;
  	meminfo->bank[0].size = SZ_256M;
  	meminfo->bank[1].start = 0x20000000;
  	meminfo->bank[1].size = SZ_512M;
  	meminfo->bank[2].start = 0x80000000;
  	meminfo->bank[2].size = SZ_256M;
  	meminfo->nr_banks = 3;
  #else
  	realview_fixup(tags, from, meminfo);
  #endif
  }
  
  static void realview_pbx_restart(char mode, const char *cmd)
  {
  	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(0x00F0, reset_ctrl);
  	__raw_writel(0x00F4, reset_ctrl);
  	dsb();
  }
  
  #ifdef CONFIG_CACHE_L2X0
  static int __init realview_pbx_l2x0_init(void)
  {
  	if (machine_is_realview_pbx() && core_tile_pbxa9mp()) {
  		void __iomem *l2x0_base =
  			__io_address(REALVIEW_PBX_TILE_L220_BASE);
  
  		/* set RAM latencies to 1 cycle for eASIC */
  		writel(0, l2x0_base + L2X0_TAG_LATENCY_CTRL);
  		writel(0, l2x0_base + L2X0_DATA_LATENCY_CTRL);
  
  		/* 16KB way size, 8-way associativity, parity disabled
  		 * Bits:  .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
  		l2x0_init(l2x0_base, 0x02520000, 0xc0000fff);
  	}
  
  	return 0;
  }
  early_initcall(realview_pbx_l2x0_init);    
  #endif
  static void __init realview_pbx_init(void)
  {
  	int i;
  
  	realview_flash_register(realview_pbx_flash_resources,
  				ARRAY_SIZE(realview_pbx_flash_resources));
  	realview_eth_register(NULL, realview_pbx_smsc911x_resources);
  	platform_device_register(&realview_i2c_device);
  	platform_device_register(&realview_cf_device);
  	realview_usb_register(realview_pbx_isp1761_resources);
  
  	if (machine_is_realview_pbx() && core_tile_pbxa9mp())
  		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
  }
  
  MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
  	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
  	.atag_offset	= 0x100,
  	.fixup		= realview_pbx_fixup,
  	.map_io		= realview_pbx_map_io,
  	.init_early	= realview_init_early,
  	.init_irq	= gic_init_irq,
  	.timer		= &realview_pbx_timer,
  	.handle_irq	= gic_handle_irq,
  	.init_machine	= realview_pbx_init,
  #ifdef CONFIG_ZONE_DMA
  	.dma_zone_size	= SZ_256M,
  #endif
  	.restart	= realview_pbx_restart,
      .nr_irqs	= NR_IRQS_LEGACY,    
  MACHINE_END
  