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linux/arch/arm/mach-realview/realview_pb1176.c
Robin Holt 7b6d864b48 reboot: arm: change reboot_mode to use enum reboot_mode 
Preparing to move the parsing of reboot= to generic kernel code forces
the change in reboot_mode handling to use the enum.

[akpm@linux-foundation.org: fix arch/arm/mach-socfpga/socfpga.c]
Signed-off-by: Robin Holt <holt@sgi.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Russ Anderson <rja@sgi.com>
Cc: Robin Holt <holt@sgi.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-09 10:33:29 -07:00

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/*
* 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/device.h>
#include <linux/amba/bus.h>
#include <linux/amba/pl061.h>
#include <linux/amba/mmci.h>
#include <linux/amba/pl022.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/partitions.h>
#include <linux/io.h>
#include <linux/irqchip/arm-gic.h>
#include <linux/platform_data/clk-realview.h>
#include <linux/reboot.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <asm/pgtable.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"
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,
};
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 PB1176 AMBA devices
*/
#define GPIO2_IRQ { IRQ_PB1176_GPIO2 }
#define GPIO3_IRQ { IRQ_PB1176_GPIO3 }
#define AACI_IRQ { IRQ_PB1176_AACI }
#define MMCI0_IRQ { IRQ_PB1176_MMCI0A, IRQ_PB1176_MMCI0B }
#define KMI0_IRQ { IRQ_PB1176_KMI0 }
#define KMI1_IRQ { IRQ_PB1176_KMI1 }
#define PB1176_SMC_IRQ { }
#define MPMC_IRQ { }
#define PB1176_CLCD_IRQ { IRQ_DC1176_CLCD }
#define SCTL_IRQ { }
#define PB1176_WATCHDOG_IRQ { IRQ_DC1176_WATCHDOG }
#define PB1176_GPIO0_IRQ { IRQ_DC1176_GPIO0 }
#define GPIO1_IRQ { IRQ_PB1176_GPIO1 }
#define PB1176_RTC_IRQ { IRQ_DC1176_RTC }
#define SCI_IRQ { IRQ_PB1176_SCI }
#define PB1176_UART0_IRQ { IRQ_DC1176_UART0 }
#define PB1176_UART1_IRQ { IRQ_DC1176_UART1 }
#define PB1176_UART2_IRQ { IRQ_DC1176_UART2 }
#define PB1176_UART3_IRQ { IRQ_DC1176_UART3 }
#define PB1176_UART4_IRQ { IRQ_PB1176_UART4 }
#define PB1176_SSP_IRQ { IRQ_DC1176_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(uart4, "fpga:uart4", PB1176_UART4, NULL);
/* DevChip Primecells */
AHB_DEVICE(smc, "dev:smc", PB1176_SMC, NULL);
AHB_DEVICE(sctl, "dev:sctl", SCTL, NULL);
APB_DEVICE(wdog, "dev:wdog", PB1176_WATCHDOG, NULL);
APB_DEVICE(gpio0, "dev:gpio0", PB1176_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", PB1176_RTC, NULL);
APB_DEVICE(sci0, "dev:sci0", SCI, NULL);
APB_DEVICE(uart0, "dev:uart0", PB1176_UART0, NULL);
APB_DEVICE(uart1, "dev:uart1", PB1176_UART1, NULL);
APB_DEVICE(uart2, "dev:uart2", PB1176_UART2, NULL);
APB_DEVICE(uart3, "dev:uart3", PB1176_UART3, NULL);
APB_DEVICE(ssp0, "dev:ssp0", PB1176_SSP, &ssp0_plat_data);
AHB_DEVICE(clcd, "dev:clcd", PB1176_CLCD, &clcd_plat_data);
static struct amba_device *amba_devs[] __initdata = {
&uart0_device,
&uart1_device,
&uart2_device,
&uart3_device,
&uart4_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[] = {
{
.start = REALVIEW_PB1176_FLASH_BASE,
.end = REALVIEW_PB1176_FLASH_BASE + REALVIEW_PB1176_FLASH_SIZE - 1,
.flags = IORESOURCE_MEM,
},
#ifdef CONFIG_REALVIEW_PB1176_SECURE_FLASH
{
.start = REALVIEW_PB1176_SEC_FLASH_BASE,
.end = REALVIEW_PB1176_SEC_FLASH_BASE + REALVIEW_PB1176_SEC_FLASH_SIZE - 1,
.flags = IORESOURCE_MEM,
},
#endif
};
static struct physmap_flash_data pb1176_rom_pdata = {
.probe_type = "map_rom",
.width = 4,
.nr_parts = 0,
};
static struct resource pb1176_rom_resources[] = {
/*
* This exposes the PB1176 DevChip ROM as an MTD ROM mapping.
* The reference manual states that this is actually a pseudo-ROM
* programmed in NVRAM.
*/
{
.start = REALVIEW_DC1176_ROM_BASE,
.end = REALVIEW_DC1176_ROM_BASE + SZ_16K - 1,
.flags = IORESOURCE_MEM,
}
};
static struct platform_device pb1176_rom_device = {
.name = "physmap-flash",
.id = -1,
.num_resources = ARRAY_SIZE(pb1176_rom_resources),
.resource = pb1176_rom_resources,
.dev = {
.platform_data = &pb1176_rom_pdata,
},
};
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 struct resource pmu_resource = {
.start = IRQ_DC1176_CORE_PMU,
.end = IRQ_DC1176_CORE_PMU,
.flags = IORESOURCE_IRQ,
};
static struct platform_device pmu_device = {
.name = "arm-pmu",
.id = -1,
.num_resources = 1,
.resource = &pmu_resource,
};
static struct resource char_lcd_resources[] = {
{
.start = REALVIEW_CHAR_LCD_BASE,
.end = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
.flags = IORESOURCE_MEM,
},
{
.start = IRQ_PB1176_CHARLCD,
.end = IRQ_PB1176_CHARLCD,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device char_lcd_device = {
.name = "arm-charlcd",
.id = -1,
.num_resources = ARRAY_SIZE(char_lcd_resources),
.resource = char_lcd_resources,
};
static void __init gic_init_irq(void)
{
/* ARM1176 DevChip GIC, primary */
gic_init(0, IRQ_DC1176_GIC_START,
__io_address(REALVIEW_DC1176_GIC_DIST_BASE),
__io_address(REALVIEW_DC1176_GIC_CPU_BASE));
/* board GIC, secondary */
gic_init(1, IRQ_PB1176_GIC_START,
__io_address(REALVIEW_PB1176_GIC_DIST_BASE),
__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_clk_init(__io_address(REALVIEW_SYS_BASE), true);
realview_timer_init(IRQ_DC1176_TIMER0);
}
static void realview_pb1176_restart(enum reboot_mode mode, const char *cmd)
{
void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
__raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
__raw_writel(REALVIEW_PB1176_SYS_SOFT_RESET, reset_ctrl);
dsb();
}
static void realview_pb1176_fixup(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,
ARRAY_SIZE(realview_pb1176_flash_resources));
platform_device_register(&pb1176_rom_device);
realview_eth_register(NULL, realview_pb1176_smsc911x_resources);
platform_device_register(&realview_i2c_device);
realview_usb_register(realview_pb1176_isp1761_resources);
platform_device_register(&pmu_device);
platform_device_register(&char_lcd_device);
for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
struct amba_device *d = amba_devs[i];
amba_device_register(d, &iomem_resource);
}
}
MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
.atag_offset = 0x100,
.fixup = realview_pb1176_fixup,
.map_io = realview_pb1176_map_io,
.init_early = realview_init_early,
.init_irq = gic_init_irq,
.init_time = realview_pb1176_timer_init,
.init_machine = realview_pb1176_init,
#ifdef CONFIG_ZONE_DMA
.dma_zone_size = SZ_256M,
#endif
.restart = realview_pb1176_restart,
MACHINE_END
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