1 /* 2 * (C) Copyright 2017 NVIDIA Corporation <www.nvidia.com> 3 * 4 * Derived from Linux kernel v4.14 files: 5 * 6 * arch/arm64/include/asm/assembler.h: 7 * Based on arch/arm/include/asm/assembler.h, arch/arm/mm/proc-macros.S 8 * Copyright (C) 1996-2000 Russell King 9 * Copyright (C) 2012 ARM Ltd. 10 * 11 * arch/arm64/kernel/head.S: 12 * Based on arch/arm/kernel/head.S 13 * Copyright (C) 1994-2002 Russell King 14 * Copyright (C) 2003-2012 ARM Ltd. 15 * Authors: Catalin Marinas <catalin.marinas@arm.com> 16 * Will Deacon <will.deacon@arm.com> 17 * 18 * arch/arm64/kernel/image.h: 19 * Copyright (C) 2014 ARM Ltd. 20 * 21 * SPDX-License-Identifier: GPL-2.0 22 */ 23 24 /* 25 * Emit a 64-bit absolute little endian symbol reference in a way that 26 * ensures that it will be resolved at build time, even when building a 27 * PIE binary. This requires cooperation from the linker script, which 28 * must emit the lo32/hi32 halves individually. 29 */ 30 .macro le64sym, sym 31 .long \sym\()_lo32 32 .long \sym\()_hi32 33 .endm 34 35 .globl _start 36 _start: 37 /* 38 * DO NOT MODIFY. Image header expected by Linux boot-loaders. 39 */ 40 b reset /* branch to kernel start, magic */ 41 .long 0 /* reserved */ 42 le64sym _kernel_offset_le /* Image load offset from start of RAM, little-endian */ 43 le64sym _kernel_size_le /* Effective size of kernel image, little-endian */ 44 le64sym _kernel_flags_le /* Informative flags, little-endian */ 45 .quad 0 /* reserved */ 46 .quad 0 /* reserved */ 47 .quad 0 /* reserved */ 48 .ascii "ARM\x64" /* Magic number */ 49 .long 0 /* reserved */ 50