git.sur5r.net Git - u-boot/blob - arch/arm/include/asm/boot0-linux-kernel-header.h

   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 */