blob: d8225c797199e2ff8107b366567103712e92914e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
/*
* Code to handle transition of Linux booting another kernel.
*
* Copyright (C) 2002-2003 Eric Biederman <ebiederm@xmission.com>
* GameCube/ppc32 port Copyright (C) 2004 Albert Herranz
* Copyright (C) 2005 IBM Corporation.
*
* This source code is licensed under the GNU General Public License,
* Version 2. See the file COPYING for more details.
*/
#include <linux/kexec.h>
#include <linux/reboot.h>
#include <linux/threads.h>
#include <asm/machdep.h>
/*
* Provide a dummy crash_notes definition until crash dump is implemented.
* This prevents breakage of crash_notes attribute in kernel/ksysfs.c.
*/
note_buf_t crash_notes[NR_CPUS];
void machine_crash_shutdown(struct pt_regs *regs)
{
if (ppc_md.machine_crash_shutdown)
ppc_md.machine_crash_shutdown();
}
/*
* Do what every setup is needed on image and the
* reboot code buffer to allow us to avoid allocations
* later.
*/
int machine_kexec_prepare(struct kimage *image)
{
if (ppc_md.machine_kexec_prepare)
return ppc_md.machine_kexec_prepare(image);
/*
* Fail if platform doesn't provide its own machine_kexec_prepare
* implementation.
*/
return -ENOSYS;
}
void machine_kexec_cleanup(struct kimage *image)
{
if (ppc_md.machine_kexec_cleanup)
ppc_md.machine_kexec_cleanup(image);
}
/*
* Do not allocate memory (or fail in any way) in machine_kexec().
* We are past the point of no return, committed to rebooting now.
*/
NORET_TYPE void machine_kexec(struct kimage *image)
{
if (ppc_md.machine_kexec)
ppc_md.machine_kexec(image);
else {
/*
* Fall back to normal restart if platform doesn't provide
* its own kexec function, and user insist to kexec...
*/
machine_restart(NULL);
}
for(;;);
}
|
