git.sur5r.net Git - u-boot/blob - board/qualcomm/dragonboard410c/head.S

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * ARM64 header for proper chain-loading with Little Kernel.
   4  *
   5  * Little Kernel shipped with Dragonboard410C boots standard Linux images for
   6  * ARM64. This file adds header that is required to boot U-Boot properly.
   7  *
   8  * For details see:
   9  * https://www.kernel.org/doc/Documentation/arm64/booting.txt
  10  *
  11  * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
  12  */
  13
  14 #include <config.h>
  15
  16 .global _arm64_header
  17 _arm64_header:
  18         b _start
  19         .word 0
  20         /* Image load offset from start of RAM, little-endian */
  21         .quad   CONFIG_SYS_TEXT_BASE-PHYS_SDRAM_1
  22         /* Effective size of kernel image, little-endian */
  23         .quad   0 /* 0x60000 - ignored */
  24         /* Informative flags, little-endian */
  25         .quad   0
  26         .quad   0                               /* reserved */
  27         .quad   0                               /* reserved */
  28         .quad   0                               /* reserved */
  29         .byte   0x41                            /* Magic number, "ARM\x64" */
  30         .byte   0x52
  31         .byte   0x4d
  32         .byte   0x64
  33         .word   0                               /* reserved */