blob: 1ca409f58929670c58a8e23f47aa9843f53a03bf (
plain) (
blame)
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
|
/*
* Copyright (C) 2016 Imagination Technologies
* Author: Marcin Nowakowski <marcin.nowakowski@mips.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/kexec.h>
#include <linux/libfdt.h>
#include <linux/uaccess.h>
static int generic_kexec_prepare(struct kimage *image)
{
int i;
for (i = 0; i < image->nr_segments; i++) {
struct fdt_header fdt;
if (image->segment[i].memsz <= sizeof(fdt))
continue;
if (copy_from_user(&fdt, image->segment[i].buf, sizeof(fdt)))
continue;
if (fdt_check_header(&fdt))
continue;
kexec_args[0] = -2;
kexec_args[1] = (unsigned long)
phys_to_virt((unsigned long)image->segment[i].mem);
break;
}
return 0;
}
static int __init register_generic_kexec(void)
{
_machine_kexec_prepare = generic_kexec_prepare;
return 0;
}
arch_initcall(register_generic_kexec);
|
