imgtool: Make "included header" optional

The imgtool.py program has been assuming that the input image for
signing has a zero padded place for the header at the beginning of the
image.  This is only true for some platforms.

Instead, make this included header space optional.  By default, prepend
the header to the image.  If `--included-header` is specified to the
sign command, consider the bytes at the beginning of the image to be
padded space for the header.  This option is required for Zephyr builds.
3 files changed
tree: bbaeeadab521026f370d892f3b9765cee8dc9bb4
  1. boot/
  2. doc/
  3. imgtool/
  4. scripts/
  5. sim/
  6. .gitignore
  7. .travis.yml
  8. build_boot.sh
  9. Makefile
  10. project.yml
  11. README-zephyr.rst
  12. README.md
  13. repository.yml
  14. root-ec-p256.pem
  15. root-rsa-2048.pem
  16. sign.sh
README.md

mcuboot

Overview

MCUBoot is a secure bootloader for 32-bit MCUs. The goal of MCUBoot is to define a common infrastructure for the bootloader, system flash layout on microcontroller systems, and to provide a secure bootloader that enables easy software upgrade.

MCUboot is operating system and hardware independent, and relies on hardware porting layers from the operating system it works with. Currently mcuboot works with both the Apache Mynewt, and Zephyr operating systems, but more ports are planned in the future.

Roadmap

The MCUBoot project was originally taken from the Apache Mynewt operating system, which had secure boot and software upgrade functionality instrinsic to it. Currently development is heads down on a first release of MCUboot that works across both the Zephyr operating system and Apache Mynewt operating system.

For more information on what's being planned, and worked on, please visit:

https://runtimeco.atlassian.net/projects/MCUB/summary

Browsing

Information and documentation on the bootloader is stored within the source, and on confluence:

https://runtimeco.atlassian.net/wiki/discover/all-updates

For more information in the source, here are some pointers:

  • boot/bootutil: The core of the bootloader itself.
  • boot/boot_serial: Support for serial upgrade within the bootloader itself.
  • boot/zephyr: Port of the bootloader to Zephyr
  • imgtool: A tool to securely sign firmware images for booting by mcuboot.
  • sim: A bootloader simulator for testing and regression

Joining

Developers welcome! To join in the discussion, please join the developer mailing list:

http://lists.runtime.co/mailman/listinfo/dev-mcuboot_lists.runtime.co