mirror of
https://github.com/torvalds/linux.git
synced 2024-11-28 23:21:31 +00:00
f86b9e0383
Move the m68k ColdFire platform support code directory to be with the existing m68k platforms. Although the ColdFire is not a platform as such, we have always kept all its support together. No reason to change that as this time. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
/*
|
|
* reset.c -- common ColdFire SoC reset support
|
|
*
|
|
* (C) Copyright 2012, Greg Ungerer <gerg@uclinux.org>
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file COPYING in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/io.h>
|
|
#include <asm/machdep.h>
|
|
#include <asm/coldfire.h>
|
|
#include <asm/mcfsim.h>
|
|
|
|
/*
|
|
* There are 2 common methods amongst the ColdFure parts for reseting
|
|
* the CPU. But there are couple of exceptions, the 5272 and the 547x
|
|
* have something completely special to them, and we let their specific
|
|
* subarch code handle them.
|
|
*/
|
|
|
|
#ifdef MCFSIM_SYPCR
|
|
static void mcf_cpu_reset(void)
|
|
{
|
|
local_irq_disable();
|
|
/* Set watchdog to soft reset, and enabled */
|
|
__raw_writeb(0xc0, MCFSIM_SYPCR);
|
|
for (;;)
|
|
/* wait for watchdog to timeout */;
|
|
}
|
|
#endif
|
|
|
|
#ifdef MCF_RCR
|
|
static void mcf_cpu_reset(void)
|
|
{
|
|
local_irq_disable();
|
|
__raw_writeb(MCF_RCR_SWRESET, MCF_RCR);
|
|
}
|
|
#endif
|
|
|
|
static int __init mcf_setup_reset(void)
|
|
{
|
|
mach_reset = mcf_cpu_reset;
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(mcf_setup_reset);
|