From 4b684a6b82572654b7398d871aa138398c2b18c7 Mon Sep 17 00:00:00 2001 From: Jorge Ramirez-Ortiz Date: Wed, 10 Jan 2018 11:33:50 +0100 Subject: db820c: add qualcomm dragonboard 820C support This commit adds support for 96Boards Dragonboard820C. The board is based on APQ8086 Qualcomm Soc, complying with the 96Boards specification. Features - 4x Kyro CPU (64 bit) up to 2.15GHz - USB2.0 - USB3.0 - ISP - Qualcomm Hexagon DSP - SD 3.0 (UHS-I) - UFS 2.0 - Qualcomm Adreno 530 GPU - GPS - BT 4.2 - Wi-Fi 2.4GHz, 5GHz (802.11ac) - PCIe 2.0 - MIPI-CSI, MIPI-DSI - I2S U-Boot boots chained from LK (LK implements the fastboot protocol) in 64-bit mode. For detailed build instructions see readme.txt in the board directory. Signed-off-by: Jorge Ramirez-Ortiz --- board/qualcomm/dragonboard820c/head.S | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 board/qualcomm/dragonboard820c/head.S (limited to 'board/qualcomm/dragonboard820c/head.S') 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 + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include + +/* + * 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) */ -- cgit