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https://github.com/brain-hackers/u-boot-brain
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efad6cf881
This SoC is used in the Raspberry Pi, for example. For more details, see: http://www.broadcom.com/products/BCM2835 http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf. Initial support is enough to boot to a serial console, execute a minimal set of U-Boot commands, download data over a serial port, and boot a Linux kernel. No storage or network drivers are implemented. GPIO driver originally by Vikram Narayanan <vikram186@gmail.com> with many fixes from myself. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
36 lines
1018 B
C
36 lines
1018 B
C
/*
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* (C) Copyright 2012 Stephen Warren
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/wdog.h>
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#define RESET_TIMEOUT 10
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void reset_cpu(ulong addr)
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{
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struct bcm2835_wdog_regs *regs =
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(struct bcm2835_wdog_regs *)BCM2835_WDOG_PHYSADDR;
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uint32_t rstc;
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rstc = readl(®s->rstc);
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rstc &= ~BCM2835_WDOG_RSTC_WRCFG_MASK;
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rstc |= BCM2835_WDOG_RSTC_WRCFG_FULL_RESET;
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writel(BCM2835_WDOG_PASSWORD | RESET_TIMEOUT, ®s->wdog);
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writel(BCM2835_WDOG_PASSWORD | rstc, ®s->rstc);
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}
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