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      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 (at) 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 */
     34