Linux Kernel  3.7.1
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reset.c
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1 /*
2  * reset.c -- common ColdFire SoC reset support
3  *
4  * (C) Copyright 2012, Greg Ungerer <[email protected]>
5  *
6  * This file is subject to the terms and conditions of the GNU General Public
7  * License. See the file COPYING in the main directory of this archive
8  * for more details.
9  */
10 
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/io.h>
14 #include <asm/machdep.h>
15 #include <asm/coldfire.h>
16 #include <asm/mcfsim.h>
17 
18 /*
19  * There are 2 common methods amongst the ColdFure parts for reseting
20  * the CPU. But there are couple of exceptions, the 5272 and the 547x
21  * have something completely special to them, and we let their specific
22  * subarch code handle them.
23  */
24 
25 #ifdef MCFSIM_SYPCR
26 static void mcf_cpu_reset(void)
27 {
29  /* Set watchdog to soft reset, and enabled */
31  for (;;)
32  /* wait for watchdog to timeout */;
33 }
34 #endif
35 
36 #ifdef MCF_RCR
37 static void mcf_cpu_reset(void)
38 {
41 }
42 #endif
43 
44 static int __init mcf_setup_reset(void)
45 {
46  mach_reset = mcf_cpu_reset;
47  return 0;
48 }
49 
50 arch_initcall(mcf_setup_reset);