pebri86 / wasp-reloader

Bootloader update tool for wasp-os

wasp-reloader: Re-flash utility for wasp-os

Introduction

wasp-reloader is a tool that is used to update to the latest version of the wasp-bootloader.

It is a application payload that, when executed, will replace the softdevice and bootloader with an updated version and then reboot into the new bootloader ready to receive a new payload.

Building wasp-reloader

Note: wasp-reloader is tested using the GNU-RM toolchain (9-2019-q4) from Arm.

1. Use hex2c.py (from wasp-os tools/ directory) to populate src/boards/<boardname>/bootloader.h
2. make
3. Deploy!

Status

• Can replace MBR and softdevice with alternatives that are the same size (or smaller).
• Can replace the bootloader binary.
• Does not update the UICR (which contains the bootloader entry point)

The effect of this is that there are just enough features implemented to deliver updates which do not change the flash partitioning for the softdevice or bootloader.

This features could easily be implemented but since they would require a different SoftDevice to test them that work hasn't taken place quite yet.

License

wasp-reloader program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License and GNU Lesser General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.