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Diffstat (limited to 'board/qualcomm/dragonboard820c/head.S')
| -rw-r--r-- | board/qualcomm/dragonboard820c/head.S | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/board/qualcomm/dragonboard820c/head.S b/board/qualcomm/dragonboard820c/head.S new file mode 100644 index 0000000000..06d82d5831 --- /dev/null +++ b/board/qualcomm/dragonboard820c/head.S @@ -0,0 +1,34 @@ +/* + * ARM64 header for proper chain-loading with Little Kernel. + * + * Little Kernel shipped with Dragonboard820C boots standard Linux images for + * ARM64. This file adds header that is required to boot U-Boot properly. + * + * For details see: + * https://www.kernel.org/doc/Documentation/arm64/booting.txt + * + * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <config.h> + +/* + * per document in linux/Doc/arm64/booting.text + */ +.global _arm64_header +_arm64_header: + b _start + .word 0 + .quad CONFIG_SYS_TEXT_BASE-PHYS_SDRAM_1 /* Image load offset, LE */ + .quad 0 /* Effective size of kernel image, little-endian */ + .quad 0 /* kernel flags, little-endian */ + .quad 0 /* reserved */ + .quad 0 /* reserved */ + .quad 0 /* reserved */ + .byte 0x41 /* Magic number, "ARM\x64" */ + .byte 0x52 + .byte 0x4d + .byte 0x64 + .word 0 /* reserved (used for PE COFF offset) */ |