40 lines
1.3 KiB
ArmAsm
40 lines
1.3 KiB
ArmAsm
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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initramfs_data includes the compressed binary that is the
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filesystem used for early user space.
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Note: Older versions of "as" (prior to binutils 2.11.90.0.23
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released on 2001-07-14) dit not support .incbin.
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If you are forced to use older binutils than that then the
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following trick can be applied to create the resulting binary:
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ld -m elf_i386 --format binary --oformat elf32-i386 -r \
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-T initramfs_data.scr initramfs_data.cpio.gz -o initramfs_data.o
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ld -m elf_i386 -r -o built-in.a initramfs_data.o
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For including the .init.ramfs sections, see include/asm-generic/vmlinux.lds.
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The above example is for i386 - the parameters vary from architectures.
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Eventually look up LDFLAGS_BLOB in an older version of the
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arch/$(ARCH)/Makefile to see the flags used before .incbin was introduced.
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Using .incbin has the advantage over ld that the correct flags are set
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in the ELF header, as required by certain architectures.
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*/
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#include <linux/stringify.h>
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#include <asm-generic/vmlinux.lds.h>
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.section .init.ramfs,"a"
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__irf_start:
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.incbin __stringify(INITRAMFS_IMAGE)
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__irf_end:
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.section .init.ramfs.info,"a"
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.globl __initramfs_size
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__initramfs_size:
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#ifdef CONFIG_64BIT
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.quad __irf_end - __irf_start
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#else
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.long __irf_end - __irf_start
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#endif
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