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- /*
- 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
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