diff options
Diffstat (limited to 'arch/mips/pic32/common')
| -rw-r--r-- | arch/mips/pic32/common/Makefile | 5 | ||||
| -rw-r--r-- | arch/mips/pic32/common/irq.c | 21 | ||||
| -rw-r--r-- | arch/mips/pic32/common/reset.c | 62 |
3 files changed, 88 insertions, 0 deletions
diff --git a/arch/mips/pic32/common/Makefile b/arch/mips/pic32/common/Makefile new file mode 100644 index 000000000..be1909cc0 --- /dev/null +++ b/arch/mips/pic32/common/Makefile @@ -0,0 +1,5 @@ +# +# Joshua Henderson, <joshua.henderson@microchip.com> +# Copyright (C) 2015 Microchip Technology, Inc. All rights reserved. +# +obj-y = reset.o irq.o diff --git a/arch/mips/pic32/common/irq.c b/arch/mips/pic32/common/irq.c new file mode 100644 index 000000000..6df347e36 --- /dev/null +++ b/arch/mips/pic32/common/irq.c @@ -0,0 +1,21 @@ +/* + * Joshua Henderson <joshua.henderson@microchip.com> + * Copyright (C) 2015 Microchip Technology Inc. All rights reserved. + * + * This program is free software; you can distribute 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 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. + */ +#include <linux/init.h> +#include <linux/irqchip.h> +#include <asm/irq.h> + +void __init arch_init_irq(void) +{ + irqchip_init(); +} diff --git a/arch/mips/pic32/common/reset.c b/arch/mips/pic32/common/reset.c new file mode 100644 index 000000000..83345757b --- /dev/null +++ b/arch/mips/pic32/common/reset.c @@ -0,0 +1,62 @@ +/* + * Joshua Henderson <joshua.henderson@microchip.com> + * Copyright (C) 2015 Microchip Technology Inc. All rights reserved. + * + * This program is free software; you can distribute 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 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. + */ +#include <linux/init.h> +#include <linux/pm.h> +#include <asm/reboot.h> +#include <asm/mach-pic32/pic32.h> + +#define PIC32_RSWRST 0x10 + +static void pic32_halt(void) +{ + while (1) { + __asm__(".set push;\n" + ".set arch=r4000;\n" + "wait;\n" + ".set pop;\n" + ); + } +} + +static void pic32_machine_restart(char *command) +{ + void __iomem *reg = + ioremap(PIC32_BASE_RESET + PIC32_RSWRST, sizeof(u32)); + + pic32_syskey_unlock(); + + /* magic write/read */ + __raw_writel(1, reg); + (void)__raw_readl(reg); + + pic32_halt(); +} + +static void pic32_machine_halt(void) +{ + local_irq_disable(); + + pic32_halt(); +} + +static int __init mips_reboot_setup(void) +{ + _machine_restart = pic32_machine_restart; + _machine_halt = pic32_machine_halt; + pm_power_off = pic32_machine_halt; + + return 0; +} + +arch_initcall(mips_reboot_setup); |