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review.trustedfirmware.org / mirror / mcuboot / b5b2f551cd08826581d2ab6583aadd85ab2d2711
commitb5b2f551cd08826581d2ab6583aadd85ab2d2711[log] [tgz]
authorFabio Utzig <utzig@apache.org>Fri Jun 30 10:03:47 2017 -0300
committerFabio Utzig <utzig@apache.org>Thu Jul 13 21:24:03 2017 -0300
tree4fbc11a1d2c190f187f76503e2cbec6604edc949
parent7b47ef7b70d6894b9edd03d434cfc39a124a8a29 [diff]
Simplify status management

This reworks much of the code, as well as tables, handling swap
state to make them simpler. Only states that require an actual
swap to be performed, perm/test/revert are checked for and acted
upon. Other possible states try to default to no operation
performed.

One extra state, BOOT_SWAP_TYPE_PANIC, was added to differentiate
between "soft" errors and unrecoverable ones (as flash read/write
errors).

Non well defined state changes after swap failures, as described
in MCUB-59 were also clean up.

This should also fix situations as described in MCUB-63, where
images generated using imgtool (magic + image_ok set) are written
to slot 0 and cause an incorrect "revert".

Signed-off-by: Fabio Utzig <utzig@apache.org>
3 files changed
tree: 4fbc11a1d2c190f187f76503e2cbec6604edc949
  1. boot/
  2. doc/
  3. samples/
  4. scripts/
  5. sim/
  6. .gitignore
  7. .gitmodules
  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