diff options
Diffstat (limited to 'arch/arm/mach-picoxcell')
| -rw-r--r-- | arch/arm/mach-picoxcell/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-picoxcell/common.c | 61 | ||||
| -rw-r--r-- | arch/arm/mach-picoxcell/common.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-picoxcell/include/mach/entry-macro.S | 11 | ||||
| -rw-r--r-- | arch/arm/mach-picoxcell/include/mach/irqs.h | 9 | ||||
| -rw-r--r-- | arch/arm/mach-picoxcell/include/mach/memory.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-picoxcell/include/mach/system.h | 5 | ||||
| -rw-r--r-- | arch/arm/mach-picoxcell/include/mach/vmalloc.h | 14 | ||||
| -rw-r--r-- | arch/arm/mach-picoxcell/io.c | 32 | ||||
| -rw-r--r-- | arch/arm/mach-picoxcell/time.c | 17 |
10 files changed, 64 insertions, 88 deletions
diff --git a/arch/arm/mach-picoxcell/Makefile b/arch/arm/mach-picoxcell/Makefile index c550b6363488..e5ec4a8d9bcb 100644 --- a/arch/arm/mach-picoxcell/Makefile +++ b/arch/arm/mach-picoxcell/Makefile @@ -1,3 +1,2 @@ obj-y := common.o obj-y += time.o -obj-y += io.o diff --git a/arch/arm/mach-picoxcell/common.c b/arch/arm/mach-picoxcell/common.c index 34d08347be5f..a2e8ae8b5821 100644 --- a/arch/arm/mach-picoxcell/common.c +++ b/arch/arm/mach-picoxcell/common.c @@ -7,23 +7,59 @@ * * All enquiries to support@picochip.com */ +#include <linux/delay.h> #include <linux/irq.h> #include <linux/irqdomain.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/of_irq.h> #include <linux/of_platform.h> #include <asm/mach/arch.h> #include <asm/hardware/vic.h> +#include <asm/mach/map.h> #include <mach/map.h> #include <mach/picoxcell_soc.h> #include "common.h" +#define WDT_CTRL_REG_EN_MASK (1 << 0) +#define WDT_CTRL_REG_OFFS (0x00) +#define WDT_TIMEOUT_REG_OFFS (0x04) +static void __iomem *wdt_regs; + +/* + * The machine restart method can be called from an atomic context so we won't + * be able to ioremap the regs then. + */ +static void picoxcell_setup_restart(void) +{ + struct device_node *np = of_find_compatible_node(NULL, NULL, + "snps,dw-apb-wdg"); + if (WARN(!np, "unable to setup watchdog restart")) + return; + + wdt_regs = of_iomap(np, 0); + WARN(!wdt_regs, "failed to remap watchdog regs"); +} + +static struct map_desc io_map __initdata = { + .virtual = PHYS_TO_IO(PICOXCELL_PERIPH_BASE), + .pfn = __phys_to_pfn(PICOXCELL_PERIPH_BASE), + .length = PICOXCELL_PERIPH_LENGTH, + .type = MT_DEVICE, +}; + +static void __init picoxcell_map_io(void) +{ + iotable_init(&io_map, 1); +} + static void __init picoxcell_init_machine(void) { of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); + picoxcell_setup_restart(); } static const char *picoxcell_dt_match[] = { @@ -33,23 +69,36 @@ static const char *picoxcell_dt_match[] = { }; static const struct of_device_id vic_of_match[] __initconst = { - { .compatible = "arm,pl192-vic" }, + { .compatible = "arm,pl192-vic", .data = vic_of_init, }, { /* Sentinel */ } }; static void __init picoxcell_init_irq(void) { - vic_init(IO_ADDRESS(PICOXCELL_VIC0_BASE), 0, ~0, 0); - vic_init(IO_ADDRESS(PICOXCELL_VIC1_BASE), 32, ~0, 0); - irq_domain_generate_simple(vic_of_match, PICOXCELL_VIC0_BASE, 0); - irq_domain_generate_simple(vic_of_match, PICOXCELL_VIC1_BASE, 32); + of_irq_init(vic_of_match); +} + +static void picoxcell_wdt_restart(char mode, const char *cmd) +{ + /* + * Configure the watchdog to reset with the shortest possible timeout + * and give it chance to do the reset. + */ + if (wdt_regs) { + writel_relaxed(WDT_CTRL_REG_EN_MASK, wdt_regs + WDT_CTRL_REG_OFFS); + writel_relaxed(0, wdt_regs + WDT_TIMEOUT_REG_OFFS); + /* No sleeping, possibly atomic. */ + mdelay(500); + } } DT_MACHINE_START(PICOXCELL, "Picochip picoXcell") .map_io = picoxcell_map_io, - .nr_irqs = ARCH_NR_IRQS, + .nr_irqs = NR_IRQS_LEGACY, .init_irq = picoxcell_init_irq, + .handle_irq = vic_handle_irq, .timer = &picoxcell_timer, .init_machine = picoxcell_init_machine, .dt_compat = picoxcell_dt_match, + .restart = picoxcell_wdt_restart, MACHINE_END diff --git a/arch/arm/mach-picoxcell/common.h b/arch/arm/mach-picoxcell/common.h index 5263f0fa095c..83d55ab956a4 100644 --- a/arch/arm/mach-picoxcell/common.h +++ b/arch/arm/mach-picoxcell/common.h @@ -13,6 +13,5 @@ #include <asm/mach/time.h> extern struct sys_timer picoxcell_timer; -extern void picoxcell_map_io(void); #endif /* __PICOXCELL_COMMON_H__ */ diff --git a/arch/arm/mach-picoxcell/include/mach/entry-macro.S b/arch/arm/mach-picoxcell/include/mach/entry-macro.S index a6b09f75d9df..9b505ac00be9 100644 --- a/arch/arm/mach-picoxcell/include/mach/entry-macro.S +++ b/arch/arm/mach-picoxcell/include/mach/entry-macro.S @@ -9,11 +9,8 @@ * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ -#include <mach/hardware.h> -#include <mach/irqs.h> -#include <mach/map.h> + .macro disable_fiq + .endm -#define VA_VIC0 IO_ADDRESS(PICOXCELL_VIC0_BASE) -#define VA_VIC1 IO_ADDRESS(PICOXCELL_VIC1_BASE) - -#include <asm/entry-macro-vic2.S> + .macro arch_ret_to_user, tmp1, tmp2 + .endm diff --git a/arch/arm/mach-picoxcell/include/mach/irqs.h b/arch/arm/mach-picoxcell/include/mach/irqs.h index 4d13ed970919..59eac1ee2820 100644 --- a/arch/arm/mach-picoxcell/include/mach/irqs.h +++ b/arch/arm/mach-picoxcell/include/mach/irqs.h @@ -1,8 +1,6 @@ /* * Copyright (c) 2011 Picochip Ltd., Jamie Iles * - * This file contains the hardware definitions of the picoXcell SoC devices. - * * 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 @@ -16,10 +14,7 @@ #ifndef __MACH_IRQS_H #define __MACH_IRQS_H -#define ARCH_NR_IRQS 64 -#define NR_IRQS (128 + ARCH_NR_IRQS) - -#define IRQ_VIC0_BASE 0 -#define IRQ_VIC1_BASE 32 +/* We dynamically allocate our irq_desc's. */ +#define NR_IRQS 0 #endif /* __MACH_IRQS_H */ diff --git a/arch/arm/mach-picoxcell/include/mach/memory.h b/arch/arm/mach-picoxcell/include/mach/memory.h deleted file mode 100644 index 40a8c178f10d..000000000000 --- a/arch/arm/mach-picoxcell/include/mach/memory.h +++ /dev/null @@ -1 +0,0 @@ -/* empty */ diff --git a/arch/arm/mach-picoxcell/include/mach/system.h b/arch/arm/mach-picoxcell/include/mach/system.h index 67c589b0c1bc..1a5d8cb57df4 100644 --- a/arch/arm/mach-picoxcell/include/mach/system.h +++ b/arch/arm/mach-picoxcell/include/mach/system.h @@ -23,9 +23,4 @@ static inline void arch_idle(void) cpu_do_idle(); } -static inline void arch_reset(int mode, const char *cmd) -{ - /* Watchdog reset to go here. */ -} - #endif /* __ASM_ARCH_SYSTEM_H */ diff --git a/arch/arm/mach-picoxcell/include/mach/vmalloc.h b/arch/arm/mach-picoxcell/include/mach/vmalloc.h deleted file mode 100644 index 0216cc4b1f0b..000000000000 --- a/arch/arm/mach-picoxcell/include/mach/vmalloc.h +++ /dev/null @@ -1,14 +0,0 @@ -/* - * Copyright (c) 2011 Picochip Ltd., Jamie Iles - * - * 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. - */ -#define VMALLOC_END 0xfe000000UL diff --git a/arch/arm/mach-picoxcell/io.c b/arch/arm/mach-picoxcell/io.c deleted file mode 100644 index 39e9b9e8cc37..000000000000 --- a/arch/arm/mach-picoxcell/io.c +++ /dev/null @@ -1,32 +0,0 @@ -/* - * Copyright (c) 2011 Picochip Ltd., Jamie Iles - * - * 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. - * - * All enquiries to support@picochip.com - */ -#include <linux/io.h> -#include <linux/mm.h> -#include <linux/module.h> -#include <linux/of.h> - -#include <asm/mach/map.h> - -#include <mach/map.h> -#include <mach/picoxcell_soc.h> - -#include "common.h" - -void __init picoxcell_map_io(void) -{ - struct map_desc io_map = { - .virtual = PHYS_TO_IO(PICOXCELL_PERIPH_BASE), - .pfn = __phys_to_pfn(PICOXCELL_PERIPH_BASE), - .length = PICOXCELL_PERIPH_LENGTH, - .type = MT_DEVICE, - }; - - iotable_init(&io_map, 1); -} diff --git a/arch/arm/mach-picoxcell/time.c b/arch/arm/mach-picoxcell/time.c index 90a554ff4499..2ecba6743b8e 100644 --- a/arch/arm/mach-picoxcell/time.c +++ b/arch/arm/mach-picoxcell/time.c @@ -11,7 +11,6 @@ #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_irq.h> -#include <linux/sched.h> #include <asm/mach/time.h> #include <asm/sched_clock.h> @@ -66,21 +65,11 @@ static void picoxcell_add_clocksource(struct device_node *source_timer) dw_apb_clocksource_register(cs); } -static DEFINE_CLOCK_DATA(cd); static void __iomem *sched_io_base; -unsigned long long notrace sched_clock(void) +static u32 picoxcell_read_sched_clock(void) { - cycle_t cyc = sched_io_base ? __raw_readl(sched_io_base) : 0; - - return cyc_to_sched_clock(&cd, cyc, (u32)~0); -} - -static void notrace picoxcell_update_sched_clock(void) -{ - cycle_t cyc = sched_io_base ? __raw_readl(sched_io_base) : 0; - - update_sched_clock(&cd, cyc, (u32)~0); + return __raw_readl(sched_io_base); } static const struct of_device_id picoxcell_rtc_ids[] __initconst = { @@ -100,7 +89,7 @@ static void picoxcell_init_sched_clock(void) timer_get_base_and_rate(sched_timer, &sched_io_base, &rate); of_node_put(sched_timer); - init_sched_clock(&cd, picoxcell_update_sched_clock, 32, rate); + setup_sched_clock(picoxcell_read_sched_clock, 32, rate); } static const struct of_device_id picoxcell_timer_ids[] __initconst = { |