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linux/arch/arm/mach-realview/realview_pbx.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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/*
* 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 <linux/irqchip/arm-gic.h>
#include <linux/platform_data/clk-realview.h>
#include <linux/reboot.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <asm/smp_twd.h>
#include <asm/pgtable.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 = -1,
.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_clk_init(__io_address(REALVIEW_SYS_BASE), false);
realview_timer_init(IRQ_PBX_TIMER0_1);
realview_pbx_twd_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(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);
/*
* 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();
}
static void __init realview_pbx_init(void)
{
int i;
#ifdef CONFIG_CACHE_L2X0
if (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);
platform_device_register(&pmu_device);
}
#endif
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);
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_PBX, "ARM-RealView PBX")
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
.atag_offset = 0x100,
.smp = smp_ops(realview_smp_ops),
.fixup = realview_pbx_fixup,
.map_io = realview_pbx_map_io,
.init_early = realview_init_early,
.init_irq = gic_init_irq,
.init_time = realview_pbx_timer_init,
.init_machine = realview_pbx_init,
#ifdef CONFIG_ZONE_DMA
.dma_zone_size = SZ_256M,
#endif
.restart = realview_pbx_restart,
MACHINE_END
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