xref: /openbmc/linux/init/noinitramfs.c (revision b234ed6d)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * init/noinitramfs.c
4  *
5  * Copyright (C) 2006, NXP Semiconductors, All Rights Reserved
6  * Author: Jean-Paul Saman <jean-paul.saman@nxp.com>
7  */
8 #include <linux/init.h>
9 #include <linux/stat.h>
10 #include <linux/kdev_t.h>
11 #include <linux/syscalls.h>
12 #include <linux/init_syscalls.h>
13 #include <linux/umh.h>
14 
15 /*
16  * Create a simple rootfs that is similar to the default initramfs
17  */
default_rootfs(void)18 static int __init default_rootfs(void)
19 {
20 	int err;
21 
22 	usermodehelper_enable();
23 	err = init_mkdir("/dev", 0755);
24 	if (err < 0)
25 		goto out;
26 
27 	err = init_mknod("/dev/console", S_IFCHR | S_IRUSR | S_IWUSR,
28 			new_encode_dev(MKDEV(5, 1)));
29 	if (err < 0)
30 		goto out;
31 
32 	err = init_mkdir("/root", 0700);
33 	if (err < 0)
34 		goto out;
35 
36 	return 0;
37 
38 out:
39 	printk(KERN_WARNING "Failed to create a rootfs\n");
40 	return err;
41 }
42 rootfs_initcall(default_rootfs);
43