Creating a Custom BSP Package from Jetson Development Environment

Execution model

Run one phase at a time. After each phase:

• Relay all command output to the user.
• If output contains [STOP] → stop immediately, consult the failure decision tree below.
• If output ends with [OK] → tell the user "Phase N complete" and proceed to the next phase.

Prerequisites

The reComputer Classic series has insufficient cooling for MAXN super mode. Do not enable MAXN mode on reComputer Classic with JetPack 6.2.

Phase 1 — Install host dependencies and prepare working directory (~10 min)

Download the working directory package for your JetPack version from the Seeed wiki, then install build dependencies on the host PC.

sudo apt-get update -y
sudo apt-get install -y \
  build-essential flex bison libssl-dev \
  sshpass abootimg nfs-kernel-server \
  libxml2-utils qemu-user-static

Extract the downloaded package and generate content:

sudo tar xpf xxx.tar.gz
# Example: sudo tar xpf L4T36-4-3_plus.tar

cd Linux_for_Tegra/
sudo ./apply_binaries.sh
cd ..

[OK] when apply_binaries.sh completes without errors. [STOP] if extraction or apply_binaries fails.

Phase 2 — Set environment variables and compile source (~20–60 min)

Set up cross-compilation environment variables in the extracted directory:

export ARCH=arm64
export CROSS_COMPILE="$PWD/aarch64--glibc--stable-2022.08-1/bin/aarch64-buildroot-linux-gnu-"
export PATH="$PWD/aarch64--glibc--stable-2022.08-1/bin:$PATH"
export INSTALL_MOD_PATH="$PWD/Linux_for_Tegra/rootfs/"

Compile the source code:

cd Linux_for_Tegra/source
./nvbuild.sh

After compilation, copy and install:

./do_copy.sh
./nvbuild.sh -i

[OK] when nvbuild.sh -i completes. [STOP] if compilation errors occur.

Phase 3 — Clone development environment from Jetson (~15–30 min)

Connect the source Jetson to the host PC via USB-C through the flashing port. Put the Jetson into Recovery mode (see https://wiki.seeedstudio.com/flash/jetpack_to_selected_product/).

Navigate to Linux_for_Tegra/ and clone:

sudo ./tools/backup_restore/l4t_backup_restore.sh -e nvme0n1 -b -c <board-name>

# Example:
# sudo ./tools/backup_restore/l4t_backup_restore.sh -e nvme0n1 -b -c recomputer-orin-j401

Replace <board-name> with your device name. Valid names for L4T 36.4.3 include:

• recomputer-industrial-orin-j201
• recomputer-orin-j401
• reserver-agx-orin-j501x
• recomputer-orin-j40mini
• recomputer-orin-robotics-j401
• recomputer-orin-super-j401

Check .conf filenames in Linux_for_Tegra/ root to find valid device names.

[OK] when backup completes. [STOP] if device not detected — check Recovery mode and USB cable.

Phase 4 — Package BSP (~15–30 min)

The backup device must remain in Recovery mode. Package the cloned content:

sudo ./tools/kernel_flash/l4t_initrd_flash.sh --use-backup-image --no-flash --network usb0 --massflash 5 <board-name> internal

# Example:
# sudo ./tools/kernel_flash/l4t_initrd_flash.sh --use-backup-image --no-flash --network usb0 --massflash 5 recomputer-orin-j401 internal

Expected: files with mfi_ prefix and a mfi_xxxxx.tar.gz package generated in Linux_for_Tegra/.

(Optional) For QSPI flash format BSP suitable for factory production:

sudo BOARDID=$BOARDID BOARDSKU=$BOARDSKU FAB=$FAB BOARDREV=$BOARDREV CHIP_SKU=$CHIP_SKU ./tools/kernel_flash/l4t_initrd_flash.sh \
--external-device nvme0n1p1 -c tools/kernel_flash/flash_l4t_t234_nvme.xml \
-p "-c bootloader/generic/cfg/flash_t234_qspi.xml --no-systemimg" --no-flash --massflash 5 --showlogs \
--network usb0 <board-name> internal

[OK] when mfi_xxxxx.tar.gz is generated. [STOP] if packaging fails.

Phase 5 — Flash target device (~10–20 min)

Extract and flash the BSP to a new target Jetson (must be in Recovery mode):

sudo tar xpf mfi_xxxx.tar.gz
cd mfi_xxxx
sudo ./tools/kernel_flash/l4t_initrd_flash.sh --flash-only --massflash 1 --network usb0 --showlogs

[OK] when flashing completes and the target Jetson boots with the cloned environment.

Failure decision tree

Reference files

• references/source.body.md — full original Seeed tutorial with download links, device name tables, and screenshots (reference only)