initrd.h
/* SPDX-License-Identifier: GPL-2.0 */
#define INITRD_MINOR 250 /* shouldn't collide with /dev/ram* too soon ... */
/* 1 = load ramdisk, 0 = don't load */
extern int rd_doload;
/* 1 = prompt for ramdisk, 0 = don't prompt */
extern int rd_prompt;
/* 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);
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;