74 lines
1.5 KiB
C
74 lines
1.5 KiB
C
/*
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* Copyright (C) 2013 Oleksij Rempel <linux@rempel-privat.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <common.h>
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#include <init.h>
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#include <io.h>
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#include <mach/ar2312_regs.h>
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#include <mach/ar231x_platform.h>
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static void __iomem *reset_base;
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void __noreturn reset_cpu(ulong addr)
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{
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printf("reseting cpu\n");
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__raw_writel(0x10000,
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(char *)KSEG1ADDR(AR2312_WD_TIMER));
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__raw_writel(AR2312_WD_CTRL_RESET,
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(char *)KSEG1ADDR(AR2312_WD_CTRL));
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unreachable();
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}
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EXPORT_SYMBOL(reset_cpu);
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static u32 ar231x_reset_readl(void)
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{
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return __raw_readl(reset_base);
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}
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static void ar231x_reset_writel(u32 val)
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{
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__raw_writel(val, reset_base);
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}
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void ar231x_reset_bit(u32 val, enum reset_state state)
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{
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u32 tmp;
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tmp = ar231x_reset_readl();
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if (state == REMOVE)
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ar231x_reset_writel(tmp & ~val);
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else
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ar231x_reset_writel(tmp | val);
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}
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EXPORT_SYMBOL(ar231x_reset_bit);
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static int ar231x_reset_probe(struct device_d *dev)
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{
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reset_base = dev_request_mem_region(dev, 0);
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if (!reset_base) {
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dev_err(dev, "could not get memory region\n");
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return -ENODEV;
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}
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return 0;
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}
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static struct driver_d ar231x_reset_driver = {
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.probe = ar231x_reset_probe,
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.name = "ar231x_reset",
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};
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static int ar231x_reset_init(void)
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{
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return platform_driver_register(&ar231x_reset_driver);
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}
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coredevice_initcall(ar231x_reset_init);
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