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review.trustedfirmware.org / mirror / mcuboot / 7ebb7c23d90fba468c73951c66bd5f1bae11a2d8
commit7ebb7c23d90fba468c73951c66bd5f1bae11a2d8[log] [tgz]
authorFabio Utzig <utzig@utzig.org>Wed Apr 26 10:59:31 2017 -0300
committerFabio Utzig <utzig@utzig.org>Wed May 24 08:45:53 2017 -0400
tree67434fc81a554b42d2ed6d6bedaffd0d449c7e90
parentd21abaaa35c31d88f9b4a18f82bce848adffb569 [diff]
Update how trailer is handled during a swap

Before this change, trailer was handled as part of the binary image,
which during a swap was just copied around together with the image.
This had issues if some fault happened while the trailer copy was
underway.

This patch changes how trailer is handled by making by non-copying.
The trailer is now updated step-by-step based on the current status.
Magic, copy_done and image_ok are also handled by writing them
individually, not by copying.

The trailer on scratch area was reduced to include at most swap state for
one sector, since it is only used temporarily while erasing the last
sector of the slot that stores the final trailer.

Many other small fixes were applied.
4 files changed
tree: 67434fc81a554b42d2ed6d6bedaffd0d449c7e90
  1. apps/
  2. boot/
  3. doc/
  4. imgtool/
  5. scripts/
  6. sim/
  7. .gitignore
  8. .travis.yml
  9. build_boot.sh
  10. Makefile
  11. project.yml
  12. README-zephyr.rst
  13. README.md
  14. repository.yml
  15. root-ec-p256.pem
  16. root-rsa-2048.pem
  17. 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