blob: bcc8bcb053eeb05dc095780fcbc276fa2f311bd4 [file] [log] [blame]
Jean-Paul Samanc33df4e2007-02-10 01:44:43 -08001/*
2 * init/noinitramfs.c
3 *
4 * Copyright (C) 2006, NXP Semiconductors, All Rights Reserved
5 * Author: Jean-Paul Saman <jean-paul.saman@nxp.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20#include <linux/init.h>
21#include <linux/stat.h>
22#include <linux/kdev_t.h>
23#include <linux/syscalls.h>
Rom Lemarchand752f5d12015-07-06 16:50:33 -070024#include <linux/kconfig.h>
25#include <linux/initramfs.h>
Jean-Paul Samanc33df4e2007-02-10 01:44:43 -080026
27/*
28 * Create a simple rootfs that is similar to the default initramfs
29 */
Rom Lemarchand752f5d12015-07-06 16:50:33 -070030#if !IS_BUILTIN(CONFIG_BLK_DEV_INITRD)
31static
32#endif
33int __init default_rootfs(void)
Jean-Paul Samanc33df4e2007-02-10 01:44:43 -080034{
35 int err;
36
Namhyung Kim562f5e62010-10-26 14:22:42 -070037 err = sys_mkdir((const char __user __force *) "/dev", 0755);
Jean-Paul Samanc33df4e2007-02-10 01:44:43 -080038 if (err < 0)
39 goto out;
40
Namhyung Kim562f5e62010-10-26 14:22:42 -070041 err = sys_mknod((const char __user __force *) "/dev/console",
Jean-Paul Samanc33df4e2007-02-10 01:44:43 -080042 S_IFCHR | S_IRUSR | S_IWUSR,
43 new_encode_dev(MKDEV(5, 1)));
44 if (err < 0)
45 goto out;
46
Namhyung Kim562f5e62010-10-26 14:22:42 -070047 err = sys_mkdir((const char __user __force *) "/root", 0700);
Jean-Paul Samanc33df4e2007-02-10 01:44:43 -080048 if (err < 0)
49 goto out;
50
51 return 0;
52
53out:
54 printk(KERN_WARNING "Failed to create a rootfs\n");
55 return err;
56}
Rom Lemarchand752f5d12015-07-06 16:50:33 -070057#if !IS_BUILTIN(CONFIG_BLK_DEV_INITRD)
Jean-Paul Samanc33df4e2007-02-10 01:44:43 -080058rootfs_initcall(default_rootfs);
Rom Lemarchand752f5d12015-07-06 16:50:33 -070059#endif