boot0-linux-kernel-header.h 1.5 KB

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