[Buildroot] [PATCH v3 5/5] board: add nvidia jetson nano support
Christian Stewart
christian at paral.in
Wed Nov 18 02:52:52 UTC 2020
Signed-off-by: Christian Stewart <christian at paral.in>
---
board/jetson/nano/format-sd.sh | 167 +++++++++++++++++++++++++++++++++
board/jetson/nano/readme.txt | 57 +++++++++++
board/jetsonnano | 1 +
configs/jetsonnano_defconfig | 55 +++++++++++
4 files changed, 280 insertions(+)
create mode 100644 board/jetson/nano/format-sd.sh
create mode 100644 board/jetson/nano/readme.txt
create mode 120000 board/jetsonnano
create mode 100644 configs/jetsonnano_defconfig
diff --git a/board/jetson/nano/format-sd.sh b/board/jetson/nano/format-sd.sh
new file mode 100644
index 0000000000..1d3b6c442a
--- /dev/null
+++ b/board/jetson/nano/format-sd.sh
@@ -0,0 +1,167 @@
+#!/bin/bash
+set -eo pipefail
+
+# NOTE: The following copyright applies to linux4tegra and associated tools:
+
+# Copyright (c) 2019-2020, NVIDIA Corporation. All Rights Reserved.
+#
+# NVIDIA Corporation and its licensors retain all intellectual property
+# and proprietary rights in and to this software, related documentation
+# and any modifications thereto. Any use, reproduction, disclosure or
+# distribution of this software and related documentation without an express
+# license agreement from NVIDIA Corporation is strictly prohibited.
+
+if [ $EUID != 0 ]; then
+ echo "This script requires root."
+fi
+
+if [ -z "$NVIDIA_SD" ]; then
+ echo "Please set NVIDIA_SD and try again."
+ exit 1
+fi
+
+if [ ! -b "$NVIDIA_SD" ]; then
+ echo "$NVIDIA_SD is not a block device or doesn't exist."
+ exit 1
+fi
+
+IMAGES_DIR=$1
+if [ -z $IMAGES_DIR ]; then
+ echo "usage: $0 path/to/images/dir"
+ exit 1
+fi
+
+uimg_path=$IMAGES_DIR/Image
+if [ ! -f "$uimg_path" ]; then
+ echo "Image not found, make sure Buildroot is done compiling."
+ exit 1
+fi
+
+l4t_tools_path=$IMAGES_DIR/linux4tegra/tools
+if [ ! -d $l4t_tools_path ]; then
+ echo "linux4tegra tools not found, ensure buildroot is done compiling."
+ exit 1
+fi
+
+# jetson-nano
+boardid="3448"
+target="jetson-nano-qspi-sd"
+storage="sdcard"
+rev="300" # from 100, 200, 300
+chipid="0x21"
+
+l4t_dir=${IMAGES_DIR}/linux4tegra
+rootfs_img=$IMAGES_DIR/rootfs.ext2
+
+# TODO: dynamic rootfs size: the following /almost/ works:
+#rootfs_size=$(du -ms ${rootfs_img} | awk '{print $1}')
+#rootfs_size=$((rootfs_size + (rootfs_size / 10)))
+
+rootfs_size=2048
+
+echo "creating signed images"
+pushd ${l4t_dir}
+export BOARDID="${boardid}"
+export FAB="${rev}"
+
+${l4t_dir}/flash.sh \
+ --no-flash \
+ --sign \
+ --no-systemimg \
+ -x ${chipid} \
+ -B ${boardid} \
+ -S "${rootfs_size}MiB" \
+ -I $IMAGES_DIR/rootfs.ext2 \
+ -K $IMAGES_DIR/u-boot-dtb.bin \
+ -d $IMAGES_DIR/tegra210-p3448-0000-p3449-0000-b00.dtb \
+ "${target}" "mmcblk0p1"
+popd
+
+bootloader_dir=${l4t_dir}/bootloader
+if [ ! -f "${bootloader_dir}/flashcmd.txt" ]; then
+ echo "ERROR: ${bootloader_dir}/flashcmd.txt not found"
+ exit 1
+fi
+
+signed_image_dir=${bootloader_dir}/signed
+if [ ! -d "${signed_image_dir}" ]; then
+ echo "ERROR: ${signed_image_dir} not found"
+ exit 1
+fi
+
+chipid=$(sed -nr 's/.*chip ([^ ]*).*/\1/p' "${bootloader_dir}/flashcmd.txt")
+if [ "${chipid}" = "0x21" ]; then
+ signed_cfg="flash.xml"
+else
+ signed_cfg="flash.xml.tmp"
+fi
+
+if [ ! -f "${signed_image_dir}/${signed_cfg}" ]; then
+ echo "ERROR: ${signed_image_dir}/${signed_cfg} not found"
+ exit 1
+fi
+
+echo "create partitions"
+partitions=($(${l4t_tools_path}/nvptparser.py "${signed_image_dir}/${signed_cfg}" "${storage}"))
+part_type=8300 # Linux Filesystem
+
+sgdisk -og "${NVIDIA_SD}"
+for part in "${partitions[@]}"; do
+ eval "${part}"
+ if [ "${part_name}" = "master_boot_record" ]; then
+ continue
+ fi
+ part_size=$((${part_size} / 512)) # convert to sectors
+ sgdisk -n "${part_num}":0:+"${part_size}" \
+ -c "${part_num}":"${part_name}" \
+ -t "${part_num}":"${part_type}" "${NVIDIA_SD}"
+done
+
+# prefer root partprobe
+PARTPROBE=partprobe
+if [ -f /usr/sbin/partprobe ]; then
+ PARTPROBE=/usr/sbin/partprobe
+fi
+
+$PARTPROBE ${NVIDIA_SD} || true
+sleep 1
+if $PARTPROBE ${NVIDIA_SD}; then
+ # wait for partitions to settle
+ sleep 1
+fi
+
+echo "write partitions"
+for part in "${partitions[@]}"; do
+ eval "${part}"
+ target_file=""
+ if [ "${part_name}" = "APP" ]; then
+ target_file="${IMAGES_DIR}/rootfs.ext2" # Buildroot target system.
+ elif [ -e "${signed_image_dir}/${part_file}" ]; then
+ target_file="${signed_image_dir}/${part_file}"
+ elif [ -e "${bootloader_dir}/${part_file}" ]; then
+ target_file="${bootloader_dir}/${part_file}"
+ fi
+
+ echo "writing partition ${part_name}"
+ if [ "${part_name}" = "master_boot_record" ]; then
+ echo "writing ${part_file}"
+ dd conv=notrunc conv=fsync if="${signed_image_dir}/${part_file}" of="${NVIDIA_SD}" bs="${part_size}" count=1
+ continue
+ fi
+
+ if [ "${target_file}" != "" ] && [ "${part_file}" != "" ]; then
+ echo "writing ${target_file}"
+ target_part=${NVIDIA_SD}p${part_num}
+ if [ ! -b ${target_part} ]; then
+ target_part=${NVIDIA_SD}${part_num}
+ fi
+ if [ ! -b ${target_part} ]; then
+ echo "Partition block device ${target_part} or ${NVIDIA_SD}p${part_num} does not exist!"
+ exit 1
+ fi
+ sudo dd conv=fsync if="${target_file}" of="${target_part}"
+ fi
+done
+
+echo "Successfully flashed $NVIDIA_SD"
+
diff --git a/board/jetson/nano/readme.txt b/board/jetson/nano/readme.txt
new file mode 100644
index 0000000000..8161c7e60f
--- /dev/null
+++ b/board/jetson/nano/readme.txt
@@ -0,0 +1,57 @@
+NVIDIA Jetson Nano
+
+Intro
+=====
+
+This configuration adds support for the Jetson Nano devkit.
+
+Building
+========
+
+Configure Buildroot
+-------------------
+
+For Jetson Nano:
+
+ $ make jetsonnano_defconfig
+
+Build the rootfs
+----------------
+
+You may now build your rootfs with:
+
+ $ make
+
+
+Flashing
+========
+
+Once the build process is finished you will have the target binaries in the
+output/images directory with a copy of linux4tegra.
+
+To format your SD card with the required partition layout, use the
+"format-sd.sh" script located under board/jetson/nano/format-sd.sh:
+
+ sudo \
+ NVIDIA_SD=/dev/sdX \
+ PATH=$(pwd)/output/host/sbin:$PATH \
+ bash board/jetson/nano/format-sd.sh ./output/images
+
+This will also flash the ext4 rootfs image to the SD card.
+
+Bootup Process
+==============
+
+The Jetson Nano can boot to a SD card.
+
+A "secure boot" process is used, with multiple bootloaders:
+
+ - BootROM -> MB1 (TrustZone)
+ - MB2/BPMP -> (Non-Trustzone)
+ - Cboot (uses Little Kernel)
+ - Uboot
+ - Kernel
+
+Cboot could be compiled from source, and the source is available from the
+official sources, however, we do not (yet) compile cboot.
+
diff --git a/board/jetsonnano b/board/jetsonnano
new file mode 120000
index 0000000000..808abfb405
--- /dev/null
+++ b/board/jetsonnano
@@ -0,0 +1 @@
+./jetson/nano
\ No newline at end of file
diff --git a/configs/jetsonnano_defconfig b/configs/jetsonnano_defconfig
new file mode 100644
index 0000000000..77600b8e98
--- /dev/null
+++ b/configs/jetsonnano_defconfig
@@ -0,0 +1,55 @@
+BR2_aarch64=y
+BR2_cortex_a57=y
+
+# enable specific optimizations
+BR2_TARGET_OPTIMIZATION="-march=armv8-a+crypto -mcpu=cortex-a57+crypto"
+
+# Toolchain reference: docs.nvidia.com: "Jetson Linux Driver Package Toolchain"
+BR2_TOOLCHAIN_BUILDROOT_CXX=y
+BR2_BINUTILS_VERSION_2_32_X=y
+
+BR2_SYSTEM_DHCP="eth0"
+
+# Linux headers same as kernel, a 4.9 series
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_9=y
+BR2_KERNEL_HEADERS_AS_KERNEL=y
+
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
+BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,madisongh,linux-tegra-4.9,0be1a57448010ae60505acf4e2153638455cee7c)/linux-tegra-4.9.140-r1.tar.gz"
+BR2_LINUX_KERNEL_DEFCONFIG="tegra"
+
+# Build the DTB from the kernel sources
+BR2_LINUX_KERNEL_DTS_SUPPORT=y
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="_ddot_/_ddot_/_ddot_/_ddot_/nvidia/platform/t210/porg/kernel-dts/tegra210-p3448-0000-p3449-0000-a02 _ddot_/_ddot_/_ddot_/_ddot_/nvidia/platform/t210/porg/kernel-dts/tegra210-p3448-0000-p3449-0000-b00"
+
+BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
+
+BR2_PACKAGE_LINUX4TEGRA=y
+BR2_PACKAGE_LINUX4TEGRA_PLATFORM_T210REF=y
+
+# TODO: NVIDIA_CONTAINER_TOOLKIT requires a go-module integration.
+# BR2_PACKAGE_NVIDIA_CONTAINER_TOOLKIT=y
+
+BR2_PACKAGE_LINUX_FIRMWARE=y
+BR2_PACKAGE_LINUX_FIRMWARE_RTL_88XX=y
+
+# Required tools to create the image
+BR2_PACKAGE_HOST_DOSFSTOOLS=y
+BR2_PACKAGE_HOST_JQ=y
+BR2_PACKAGE_HOST_PARTED=y
+
+# Filesystem / image
+BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_EXT2_4=y
+BR2_TARGET_ROOTFS_EXT2_SIZE="1024M"
+# BR2_TARGET_ROOTFS_TAR is not set
+
+# Uboot
+BR2_TARGET_UBOOT=y
+BR2_TARGET_UBOOT_BOARD_DEFCONFIG="p3450-porg"
+BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
+BR2_TARGET_UBOOT_CUSTOM_TARBALL=y
+BR2_TARGET_UBOOT_CUSTOM_TARBALL_LOCATION="$(call github,paralin,u-boot-tegra,45dfa3dff43f880243a9fe68f3d911e99a240654)/u-boot-tegra-l4t-r32.4.2-v2016.07.tar.gz"
+BR2_TARGET_UBOOT_FORMAT_DTB_BIN=y
+BR2_TARGET_UBOOT_NEEDS_DTC=y
--
2.29.2
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