1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
4 | */ |
5 | |
6 | #include <linux/init.h> |
7 | #include <linux/memblock.h> |
8 | #include <linux/initrd.h> |
9 | #include <asm/types.h> |
10 | #include <init.h> |
11 | #include <os.h> |
12 | |
13 | #include "um_arch.h" |
14 | |
15 | /* Changed by uml_initrd_setup, which is a setup */ |
16 | static char *initrd __initdata = NULL; |
17 | |
18 | int __init read_initrd(void) |
19 | { |
20 | unsigned long long size; |
21 | void *area; |
22 | |
23 | if (!initrd) |
24 | return 0; |
25 | |
26 | area = uml_load_file(filename: initrd, size: &size); |
27 | if (!area) |
28 | return 0; |
29 | |
30 | initrd_start = (unsigned long) area; |
31 | initrd_end = initrd_start + size; |
32 | return 0; |
33 | } |
34 | |
35 | static int __init uml_initrd_setup(char *line, int *add) |
36 | { |
37 | initrd = line; |
38 | return 0; |
39 | } |
40 | |
41 | __uml_setup("initrd=" , uml_initrd_setup, |
42 | "initrd=<initrd image>\n" |
43 | " This is used to boot UML from an initrd image. The argument is the\n" |
44 | " name of the file containing the image.\n\n" |
45 | ); |
46 | |