include/linux/initrd.h

   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 */
   9 extern int rd_image_start;
  10
  11 /* size of a single RAM disk */
  12 extern unsigned long rd_size;
  13
  14 /* 1 if it is not an error if initrd_start < memory_start */
  15 extern int initrd_below_start_ok;
  16
  17 /* free_initrd_mem always gets called with the next two as arguments.. */
  18 extern unsigned long initrd_start, initrd_end;
  19 extern void free_initrd_mem(unsigned long, unsigned long);
  20
  21 #ifdef CONFIG_BLK_DEV_INITRD
  22 extern void __init reserve_initrd_mem(void);
  23 extern void wait_for_initramfs(void);
  24 #else
  25 static inline void __init reserve_initrd_mem(void) {}
  26 static inline void wait_for_initramfs(void) {}
  27 #endif
  28
  29 extern phys_addr_t phys_initrd_start;
  30 extern unsigned long phys_initrd_size;
  31
  32 extern char __initramfs_start[];
  33 extern unsigned long __initramfs_size;
  34
  35 void console_on_rootfs(void);
  36
  37 #endif /* __LINUX_INITRD_H */