mirror of
https://github.com/torvalds/linux.git
synced 2024-11-16 00:52:01 +00:00
1198c6d45a
Define the __initramfs_size variable using VMLINUX_SYMBOL() to take care
of symbol-prefixed architectures, for example, blackfin.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>,
Cc: Michal Marek <mmarek@suse.cz>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[mmarek: leave out Makefile change, since d63f6d1 already takes care of the
SYMBOL_PREFIX define]
Signed-off-by: Michal Marek <mmarek@suse.cz>
39 lines
1.3 KiB
ArmAsm
39 lines
1.3 KiB
ArmAsm
/*
|
|
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.o 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 VMLINUX_SYMBOL(__initramfs_size)
|
|
VMLINUX_SYMBOL(__initramfs_size):
|
|
#ifdef CONFIG_64BIT
|
|
.quad __irf_end - __irf_start
|
|
#else
|
|
.long __irf_end - __irf_start
|
|
#endif
|