1/* SPDX-License-Identifier: GPL-2.0 */
2
3#ifndef __LINUX_INITRD_H
4#define __LINUX_INITRD_H
5
6#define INITRD_MINOR 250 /* shouldn't collide with /dev/ram* too soon ... */
7
8/* starting block # of image */
9extern int rd_image_start;
10
11/* size of a single RAM disk */
12extern unsigned long rd_size;
13
14/* 1 if it is not an error if initrd_start < memory_start */
15extern int initrd_below_start_ok;
16
17/* free_initrd_mem always gets called with the next two as arguments.. */
18extern unsigned long initrd_start, initrd_end;
19extern void free_initrd_mem(unsigned long, unsigned long);
20
21#ifdef CONFIG_BLK_DEV_INITRD
22extern void __init reserve_initrd_mem(void);
23extern void wait_for_initramfs(void);
24#else
25static inline void __init reserve_initrd_mem(void) {}
26static inline void wait_for_initramfs(void) {}
27#endif
28
29extern phys_addr_t phys_initrd_start;
30extern unsigned long phys_initrd_size;
31
32extern char __initramfs_start[];
33extern unsigned long __initramfs_size;
34
35void console_on_rootfs(void);
36
37#endif /* __LINUX_INITRD_H */
38