[thirdparty/kernel/stable.git] / usr / initramfs_data.S

/* SPDX-License-Identifier: GPL-2.0 */
/*
  initramfs_data includes the compressed binary that is the
  filesystem used for early user space.
  Note: Older versions of "as" (prior to binutils 2.11.90.0.23
  released on 2001-07-14) dit not support .incbin.
  If you are forced to use older binutils than that then the
  following trick can be applied to create the resulting binary:


  ld -m elf_i386  --format binary --oformat elf32-i386 -r \
  -T initramfs_data.scr initramfs_data.cpio.gz -o initramfs_data.o
   ld -m elf_i386  -r -o built-in.a initramfs_data.o

  For including the .init.ramfs sections, see include/asm-generic/vmlinux.lds.

  The above example is for i386 - the parameters vary from architectures.
  Eventually look up LDFLAGS_BLOB in an older version of the
  arch/$(ARCH)/Makefile to see the flags used before .incbin was introduced.

  Using .incbin has the advantage over ld that the correct flags are set
  in the ELF header, as required by certain architectures.
*/

#include <linux/stringify.h>
#include <asm-generic/vmlinux.lds.h>

.section .init.ramfs,"a"
__irf_start:
.incbin __stringify(INITRAMFS_IMAGE)
__irf_end:
.section .init.ramfs.info,"a"
.globl __initramfs_size
__initramfs_size:
#ifdef CONFIG_64BIT
	.quad __irf_end - __irf_start
#else
	.long __irf_end - __irf_start
#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	/*
	3	initramfs_data includes the compressed binary that is the
	4	filesystem used for early user space.
	5	Note: Older versions of "as" (prior to binutils 2.11.90.0.23
	6	released on 2001-07-14) dit not support .incbin.
	7	If you are forced to use older binutils than that then the
	8	following trick can be applied to create the resulting binary:
	9
	10
	11	ld -m elf_i386 --format binary --oformat elf32-i386 -r \
	12	-T initramfs_data.scr initramfs_data.cpio.gz -o initramfs_data.o
f49821ee	13	ld -m elf_i386 -r -o built-in.a initramfs_data.o
1da177e4	14
ffe8018c	15	For including the .init.ramfs sections, see include/asm-generic/vmlinux.lds.
1da177e4 LT	16
	17	The above example is for i386 - the parameters vary from architectures.
	18	Eventually look up LDFLAGS_BLOB in an older version of the
	19	arch/$(ARCH)/Makefile to see the flags used before .incbin was introduced.
	20
	21	Using .incbin has the advantage over ld that the correct flags are set
	22	in the ELF header, as required by certain architectures.
	23	*/
	24
6ae64e42	25	#include <linux/stringify.h>
1198c6d4	26	#include <asm-generic/vmlinux.lds.h>
1da177e4	27
6ae64e42	28	.section .init.ramfs,"a"
ffe8018c	29	__irf_start:
6ae64e42	30	.incbin __stringify(INITRAMFS_IMAGE)
ffe8018c HB	31	__irf_end:
ffe8018c HB	32	.section .init.ramfs.info,"a"
c4df32c8 MY	33	.globl __initramfs_size
c4df32c8 MY	34	__initramfs_size:
96f93593	35	#ifdef CONFIG_64BIT
ffe8018c	36	.quad __irf_end - __irf_start
96f93593 GU	37	#else
96f93593 GU	38	.long __irf_end - __irf_start
ffe8018c	39	#endif