diff options
Diffstat (limited to 'arch/arm/mach-highbank')
22 files changed, 654 insertions, 0 deletions
diff --git a/arch/arm/mach-highbank/Makefile b/arch/arm/mach-highbank/Makefile new file mode 100644 index 000000000000..986958a5a720 --- /dev/null +++ b/arch/arm/mach-highbank/Makefile @@ -0,0 +1,6 @@ +obj-y := clock.o highbank.o system.o +obj-$(CONFIG_DEBUG_HIGHBANK_UART) += lluart.o +obj-$(CONFIG_SMP) += platsmp.o +obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o +obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o +obj-$(CONFIG_PM_SLEEP) += pm.o diff --git a/arch/arm/mach-highbank/Makefile.boot b/arch/arm/mach-highbank/Makefile.boot new file mode 100644 index 000000000000..dae9661a7689 --- /dev/null +++ b/arch/arm/mach-highbank/Makefile.boot @@ -0,0 +1 @@ +zreladdr-y := 0x00008000 diff --git a/arch/arm/mach-highbank/clock.c b/arch/arm/mach-highbank/clock.c new file mode 100644 index 000000000000..c25a2ae4fde1 --- /dev/null +++ b/arch/arm/mach-highbank/clock.c @@ -0,0 +1,62 @@ +/* + * Copyright 2011 Calxeda, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>. + */ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/clk.h> +#include <linux/clkdev.h> + +struct clk { + unsigned long rate; +}; + +int clk_enable(struct clk *clk) +{ + return 0; +} + +void clk_disable(struct clk *clk) +{} + +unsigned long clk_get_rate(struct clk *clk) +{ + return clk->rate; +} + +long clk_round_rate(struct clk *clk, unsigned long rate) +{ + return clk->rate; +} + +int clk_set_rate(struct clk *clk, unsigned long rate) +{ + return 0; +} + +static struct clk eclk = { .rate = 200000000 }; +static struct clk pclk = { .rate = 150000000 }; + +static struct clk_lookup lookups[] = { + { .clk = &pclk, .con_id = "apb_pclk", }, + { .clk = &pclk, .dev_id = "sp804", }, + { .clk = &eclk, .dev_id = "ffe0e000.sdhci", }, + { .clk = &pclk, .dev_id = "fff36000.serial", }, +}; + +void __init highbank_clocks_init(void) +{ + clkdev_add_table(lookups, ARRAY_SIZE(lookups)); +} diff --git a/arch/arm/mach-highbank/core.h b/arch/arm/mach-highbank/core.h new file mode 100644 index 000000000000..7e33fc94cd1e --- /dev/null +++ b/arch/arm/mach-highbank/core.h @@ -0,0 +1,9 @@ +extern void highbank_set_cpu_jump(int cpu, void *jump_addr); +extern void highbank_clocks_init(void); +extern void __iomem *scu_base_addr; +#ifdef CONFIG_DEBUG_HIGHBANK_UART +extern void highbank_lluart_map_io(void); +#else +static inline void highbank_lluart_map_io(void) {} +#endif + diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c new file mode 100644 index 000000000000..b82dcf08e747 --- /dev/null +++ b/arch/arm/mach-highbank/highbank.c @@ -0,0 +1,145 @@ +/* + * Copyright 2010-2011 Calxeda, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>. + */ +#include <linux/clk.h> +#include <linux/clkdev.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/irqdomain.h> +#include <linux/of.h> +#include <linux/of_irq.h> +#include <linux/of_platform.h> +#include <linux/of_address.h> + +#include <asm/cacheflush.h> +#include <asm/unified.h> +#include <asm/smp_scu.h> +#include <asm/hardware/arm_timer.h> +#include <asm/hardware/timer-sp.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/irqs.h> + +#include "core.h" +#include "sysregs.h" + +void __iomem *sregs_base; + +#define HB_SCU_VIRT_BASE 0xfee00000 +void __iomem *scu_base_addr = ((void __iomem *)(HB_SCU_VIRT_BASE)); + +static struct map_desc scu_io_desc __initdata = { + .virtual = HB_SCU_VIRT_BASE, + .pfn = 0, /* run-time */ + .length = SZ_4K, + .type = MT_DEVICE, +}; + +static void __init highbank_scu_map_io(void) +{ + unsigned long base; + + /* Get SCU base */ + asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (base)); + + scu_io_desc.pfn = __phys_to_pfn(base); + iotable_init(&scu_io_desc, 1); +} + +static void __init highbank_map_io(void) +{ + highbank_scu_map_io(); + highbank_lluart_map_io(); +} + +#define HB_JUMP_TABLE_PHYS(cpu) (0x40 + (0x10 * (cpu))) +#define HB_JUMP_TABLE_VIRT(cpu) phys_to_virt(HB_JUMP_TABLE_PHYS(cpu)) + +void highbank_set_cpu_jump(int cpu, void *jump_addr) +{ + writel(BSYM(virt_to_phys(jump_addr)), HB_JUMP_TABLE_VIRT(cpu)); + __cpuc_flush_dcache_area(HB_JUMP_TABLE_VIRT(cpu), 16); + outer_clean_range(HB_JUMP_TABLE_PHYS(cpu), + HB_JUMP_TABLE_PHYS(cpu) + 15); +} + +const static struct of_device_id irq_match[] = { + { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, }, + {} +}; + +static void __init highbank_init_irq(void) +{ + of_irq_init(irq_match); + l2x0_of_init(0, ~0UL); +} + +static void __init highbank_timer_init(void) +{ + int irq; + struct device_node *np; + void __iomem *timer_base; + + /* Map system registers */ + np = of_find_compatible_node(NULL, NULL, "calxeda,hb-sregs"); + sregs_base = of_iomap(np, 0); + WARN_ON(!sregs_base); + + np = of_find_compatible_node(NULL, NULL, "arm,sp804"); + timer_base = of_iomap(np, 0); + WARN_ON(!timer_base); + irq = irq_of_parse_and_map(np, 0); + + highbank_clocks_init(); + + sp804_clocksource_init(timer_base + 0x20, "timer1"); + sp804_clockevents_init(timer_base, irq, "timer0"); +} + +static struct sys_timer highbank_timer = { + .init = highbank_timer_init, +}; + +static void highbank_power_off(void) +{ + hignbank_set_pwr_shutdown(); + scu_power_mode(scu_base_addr, SCU_PM_POWEROFF); + + while (1) + cpu_do_idle(); +} + +static void __init highbank_init(void) +{ + pm_power_off = highbank_power_off; + + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); +} + +static const char *highbank_match[] __initconst = { + "calxeda,highbank", + NULL, +}; + +DT_MACHINE_START(HIGHBANK, "Highbank") + .map_io = highbank_map_io, + .init_irq = highbank_init_irq, + .timer = &highbank_timer, + .init_machine = highbank_init, + .dt_compat = highbank_match, +MACHINE_END diff --git a/arch/arm/mach-highbank/hotplug.c b/arch/arm/mach-highbank/hotplug.c new file mode 100644 index 000000000000..977cebbea580 --- /dev/null +++ b/arch/arm/mach-highbank/hotplug.c @@ -0,0 +1,56 @@ +/* + * Copyright 2011 Calxeda, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>. + */ +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/smp.h> + +#include <asm/smp_scu.h> +#include <asm/cacheflush.h> + +#include "core.h" + +extern void secondary_startup(void); + +int platform_cpu_kill(unsigned int cpu) +{ + return 1; +} + +/* + * platform-specific code to shutdown a CPU + * + */ +void platform_cpu_die(unsigned int cpu) +{ + flush_cache_all(); + + highbank_set_cpu_jump(cpu, secondary_startup); + scu_power_mode(scu_base_addr, SCU_PM_POWEROFF); + + cpu_do_idle(); + + /* We should never return from idle */ + panic("highbank: cpu %d unexpectedly exit from shutdown\n", cpu); +} + +int platform_cpu_disable(unsigned int cpu) +{ + /* + * CPU0 should not be shut down via hotplug. cpu_idle can WFI + * or a proper shutdown or hibernate should be used. + */ + return cpu == 0 ? -EPERM : 0; +} diff --git a/arch/arm/mach-highbank/include/mach/debug-macro.S b/arch/arm/mach-highbank/include/mach/debug-macro.S new file mode 100644 index 000000000000..cb57fe5bcd04 --- /dev/null +++ b/arch/arm/mach-highbank/include/mach/debug-macro.S @@ -0,0 +1,19 @@ +/* + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks + * + * 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. + */ + + .macro addruart,rp,rv,tmp + movw \rv, #0x6000 + movt \rv, #0xfee3 + movw \rp, #0x6000 + movt \rp, #0xfff3 + .endm + +#include <asm/hardware/debug-pl01x.S> diff --git a/arch/arm/mach-highbank/include/mach/entry-macro.S b/arch/arm/mach-highbank/include/mach/entry-macro.S new file mode 100644 index 000000000000..73c11297509e --- /dev/null +++ b/arch/arm/mach-highbank/include/mach/entry-macro.S @@ -0,0 +1,7 @@ +#include <asm/hardware/entry-macro-gic.S> + + .macro disable_fiq + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm diff --git a/arch/arm/mach-highbank/include/mach/gpio.h b/arch/arm/mach-highbank/include/mach/gpio.h new file mode 100644 index 000000000000..40a8c178f10d --- /dev/null +++ b/arch/arm/mach-highbank/include/mach/gpio.h @@ -0,0 +1 @@ +/* empty */ diff --git a/arch/arm/mach-highbank/include/mach/io.h b/arch/arm/mach-highbank/include/mach/io.h new file mode 100644 index 000000000000..70cfa3ba7697 --- /dev/null +++ b/arch/arm/mach-highbank/include/mach/io.h @@ -0,0 +1,7 @@ +#ifndef __MACH_IO_H +#define __MACH_IO_H + +#define __io(a) ({ (void)(a); __typesafe_io(0); }) +#define __mem_pci(a) (a) + +#endif diff --git a/arch/arm/mach-highbank/include/mach/irqs.h b/arch/arm/mach-highbank/include/mach/irqs.h new file mode 100644 index 000000000000..9746aab14e9a --- /dev/null +++ b/arch/arm/mach-highbank/include/mach/irqs.h @@ -0,0 +1,6 @@ +#ifndef __MACH_IRQS_H +#define __MACH_IRQS_H + +#define NR_IRQS 192 + +#endif diff --git a/arch/arm/mach-highbank/include/mach/memory.h b/arch/arm/mach-highbank/include/mach/memory.h new file mode 100644 index 000000000000..40a8c178f10d --- /dev/null +++ b/arch/arm/mach-highbank/include/mach/memory.h @@ -0,0 +1 @@ +/* empty */ diff --git a/arch/arm/mach-highbank/include/mach/system.h b/arch/arm/mach-highbank/include/mach/system.h new file mode 100644 index 000000000000..7e8192296cae --- /dev/null +++ b/arch/arm/mach-highbank/include/mach/system.h @@ -0,0 +1,26 @@ +/* + * Copyright 2010-2011 Calxeda, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>. + */ +#ifndef __MACH_SYSTEM_H +#define __MACH_SYSTEM_H + +static inline void arch_idle(void) +{ + cpu_do_idle(); +} + +extern void arch_reset(char mode, const char *cmd); + +#endif diff --git a/arch/arm/mach-highbank/include/mach/timex.h b/arch/arm/mach-highbank/include/mach/timex.h new file mode 100644 index 000000000000..88dac7a55a97 --- /dev/null +++ b/arch/arm/mach-highbank/include/mach/timex.h @@ -0,0 +1,6 @@ +#ifndef __MACH_TIMEX_H +#define __MACH_TIMEX_H + +#define CLOCK_TICK_RATE 1000000 + +#endif diff --git a/arch/arm/mach-highbank/include/mach/uncompress.h b/arch/arm/mach-highbank/include/mach/uncompress.h new file mode 100644 index 000000000000..bbe20e696325 --- /dev/null +++ b/arch/arm/mach-highbank/include/mach/uncompress.h @@ -0,0 +1,9 @@ +#ifndef __MACH_UNCOMPRESS_H +#define __MACH_UNCOMPRESS_H + +#define putc(c) +#define flush() +#define arch_decomp_setup() +#define arch_decomp_wdog() + +#endif diff --git a/arch/arm/mach-highbank/include/mach/vmalloc.h b/arch/arm/mach-highbank/include/mach/vmalloc.h new file mode 100644 index 000000000000..1969e954277a --- /dev/null +++ b/arch/arm/mach-highbank/include/mach/vmalloc.h @@ -0,0 +1 @@ +#define VMALLOC_END 0xFEE00000UL diff --git a/arch/arm/mach-highbank/lluart.c b/arch/arm/mach-highbank/lluart.c new file mode 100644 index 000000000000..371575019f33 --- /dev/null +++ b/arch/arm/mach-highbank/lluart.c @@ -0,0 +1,34 @@ +/* + * Copyright 2011 Calxeda, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>. + */ +#include <linux/init.h> +#include <asm/page.h> +#include <asm/sizes.h> +#include <asm/mach/map.h> + +#define HB_DEBUG_LL_PHYS_BASE 0xfff36000 +#define HB_DEBUG_LL_VIRT_BASE 0xfee36000 + +static struct map_desc lluart_io_desc __initdata = { + .virtual = HB_DEBUG_LL_VIRT_BASE, + .pfn = __phys_to_pfn(HB_DEBUG_LL_PHYS_BASE), + .length = SZ_4K, + .type = MT_DEVICE, +}; + +void __init highbank_lluart_map_io(void) +{ + iotable_init(&lluart_io_desc, 1); +} diff --git a/arch/arm/mach-highbank/localtimer.c b/arch/arm/mach-highbank/localtimer.c new file mode 100644 index 000000000000..5a00e7945fdf --- /dev/null +++ b/arch/arm/mach-highbank/localtimer.c @@ -0,0 +1,40 @@ +/* + * Copyright 2010-2011 Calxeda, Inc. + * Based on localtimer.c, Copyright (C) 2002 ARM Ltd. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>. + */ +#include <linux/init.h> +#include <linux/clockchips.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/of_irq.h> + +#include <asm/smp_twd.h> + +/* + * Setup the local clock events for a CPU. + */ +int __cpuinit local_timer_setup(struct clock_event_device *evt) +{ + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "arm,smp-twd"); + if (!twd_base) { + twd_base = of_iomap(np, 0); + WARN_ON(!twd_base); + } + evt->irq = irq_of_parse_and_map(np, 0); + twd_timer_setup(evt); + return 0; +} diff --git a/arch/arm/mach-highbank/platsmp.c b/arch/arm/mach-highbank/platsmp.c new file mode 100644 index 000000000000..d01364c72b45 --- /dev/null +++ b/arch/arm/mach-highbank/platsmp.c @@ -0,0 +1,78 @@ +/* + * Copyright 2010-2011 Calxeda, Inc. + * Based on platsmp.c, Copyright (C) 2002 ARM Ltd. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>. + */ +#include <linux/init.h> +#include <linux/smp.h> +#include <linux/io.h> + +#include <asm/smp_scu.h> +#include <asm/hardware/gic.h> + +#include "core.h" + +extern void secondary_startup(void); + +void __cpuinit platform_secondary_init(unsigned int cpu) +{ + gic_secondary_init(0); +} + +int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) +{ + gic_raise_softirq(cpumask_of(cpu), 0); + return 0; +} + +/* + * Initialise the CPU possible map early - this describes the CPUs + * which may be present or become present in the system. + */ +void __init smp_init_cpus(void) +{ + unsigned int i, ncores; + + ncores = scu_get_core_count(scu_base_addr); + + /* sanity check */ + if (ncores > NR_CPUS) { + printk(KERN_WARNING + "highbank: no. of cores (%d) greater than configured " + "maximum of %d - clipping\n", + ncores, NR_CPUS); + ncores = NR_CPUS; + } + + for (i = 0; i < ncores; i++) + set_cpu_possible(i, true); + + set_smp_cross_call(gic_raise_softirq); +} + +void __init platform_smp_prepare_cpus(unsigned int max_cpus) +{ + int i; + + scu_enable(scu_base_addr); + + /* + * Write the address of secondary startup into the jump table + * The cores are in wfi and wait until they receive a soft interrupt + * and a non-zero value to jump to. Then the secondary CPU branches + * to this address. + */ + for (i = 1; i < max_cpus; i++) + highbank_set_cpu_jump(i, secondary_startup); +} diff --git a/arch/arm/mach-highbank/pm.c b/arch/arm/mach-highbank/pm.c new file mode 100644 index 000000000000..33b3beb89982 --- /dev/null +++ b/arch/arm/mach-highbank/pm.c @@ -0,0 +1,55 @@ +/* + * Copyright 2011 Calxeda, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/init.h> +#include <linux/io.h> +#include <linux/suspend.h> + +#include <asm/proc-fns.h> +#include <asm/smp_scu.h> +#include <asm/suspend.h> + +#include "core.h" +#include "sysregs.h" + +static int highbank_suspend_finish(unsigned long val) +{ + cpu_do_idle(); + return 0; +} + +static int highbank_pm_enter(suspend_state_t state) +{ + hignbank_set_pwr_suspend(); + highbank_set_cpu_jump(0, cpu_resume); + + scu_power_mode(scu_base_addr, SCU_PM_POWEROFF); + cpu_suspend(0, highbank_suspend_finish); + + return 0; +} + +static const struct platform_suspend_ops highbank_pm_ops = { + .enter = highbank_pm_enter, + .valid = suspend_valid_only_mem, +}; + +static int __init highbank_pm_init(void) +{ + suspend_set_ops(&highbank_pm_ops); + return 0; +} +module_init(highbank_pm_init); diff --git a/arch/arm/mach-highbank/sysregs.h b/arch/arm/mach-highbank/sysregs.h new file mode 100644 index 000000000000..0e913389f445 --- /dev/null +++ b/arch/arm/mach-highbank/sysregs.h @@ -0,0 +1,52 @@ +/* + * Copyright 2011 Calxeda, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>. + */ +#ifndef _MACH_HIGHBANK__SYSREGS_H_ +#define _MACH_HIGHBANK__SYSREGS_H_ + +#include <linux/io.h> + +extern void __iomem *sregs_base; + +#define HB_SREG_A9_PWR_REQ 0xf00 +#define HB_SREG_A9_BOOT_STAT 0xf04 +#define HB_SREG_A9_BOOT_DATA 0xf08 + +#define HB_PWR_SUSPEND 0 +#define HB_PWR_SOFT_RESET 1 +#define HB_PWR_HARD_RESET 2 +#define HB_PWR_SHUTDOWN 3 + +static inline void hignbank_set_pwr_suspend(void) +{ + writel(HB_PWR_SUSPEND, sregs_base + HB_SREG_A9_PWR_REQ); +} + +static inline void hignbank_set_pwr_shutdown(void) +{ + writel(HB_PWR_SHUTDOWN, sregs_base + HB_SREG_A9_PWR_REQ); +} + +static inline void hignbank_set_pwr_soft_reset(void) +{ + writel(HB_PWR_SOFT_RESET, sregs_base + HB_SREG_A9_PWR_REQ); +} + +static inline void hignbank_set_pwr_hard_reset(void) +{ + writel(HB_PWR_HARD_RESET, sregs_base + HB_SREG_A9_PWR_REQ); +} + +#endif diff --git a/arch/arm/mach-highbank/system.c b/arch/arm/mach-highbank/system.c new file mode 100644 index 000000000000..53f0c4c5ef1c --- /dev/null +++ b/arch/arm/mach-highbank/system.c @@ -0,0 +1,33 @@ +/* + * Copyright 2011 Calxeda, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>. + */ +#include <linux/io.h> +#include <asm/smp_scu.h> +#include <asm/proc-fns.h> + +#include "core.h" +#include "sysregs.h" + +void arch_reset(char mode, const char *cmd) +{ + if (mode == 'h') + hignbank_set_pwr_hard_reset(); + else + hignbank_set_pwr_soft_reset(); + + scu_power_mode(scu_base_addr, SCU_PM_POWEROFF); + cpu_do_idle(); +} + |
