linux/include/linux/initrd.h
Kefeng Wang c72160fe05
initramfs: Provide a common initrd reserve function
Some architectures(eg, ARM and riscv) have similar logic to
check and reserve the memory of initrd, let's provide a common
function reserve_initrd_mem() to reduce duplicated code.

Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-02-18 23:17:57 -08:00

38 lines
959 B
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_INITRD_H
#define __LINUX_INITRD_H
#define INITRD_MINOR 250 /* shouldn't collide with /dev/ram* too soon ... */
/* starting block # of image */
extern int rd_image_start;
/* size of a single RAM disk */
extern unsigned long rd_size;
/* 1 if it is not an error if initrd_start < memory_start */
extern int initrd_below_start_ok;
/* free_initrd_mem always gets called with the next two as arguments.. */
extern unsigned long initrd_start, initrd_end;
extern void free_initrd_mem(unsigned long, unsigned long);
#ifdef CONFIG_BLK_DEV_INITRD
extern void __init reserve_initrd_mem(void);
#else
static inline void __init reserve_initrd_mem(void) {}
#endif
extern phys_addr_t phys_initrd_start;
extern unsigned long phys_initrd_size;
extern unsigned int real_root_dev;
extern char __initramfs_start[];
extern unsigned long __initramfs_size;
void console_on_rootfs(void);
#endif /* __LINUX_INITRD_H */