mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-21 01:18:52 +09:00
![Stephen Warren](/assets/img/avatar_default.png)
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
/*
|
|
* (C) Copyright 2012 Stephen Warren
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* 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.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/wdog.h>
|
|
|
|
#define RESET_TIMEOUT 10
|
|
|
|
void reset_cpu(ulong addr)
|
|
{
|
|
struct bcm2835_wdog_regs *regs =
|
|
(struct bcm2835_wdog_regs *)BCM2835_WDOG_PHYSADDR;
|
|
uint32_t rstc;
|
|
|
|
rstc = readl(®s->rstc);
|
|
rstc &= ~BCM2835_WDOG_RSTC_WRCFG_MASK;
|
|
rstc |= BCM2835_WDOG_RSTC_WRCFG_FULL_RESET;
|
|
|
|
writel(BCM2835_WDOG_PASSWORD | RESET_TIMEOUT, ®s->wdog);
|
|
writel(BCM2835_WDOG_PASSWORD | rstc, ®s->rstc);
|
|
}
|