Summary

Zephyr microPlatform changes for 0.21

Zephyr v1.12, MCUboot changes for v1.2.0, minor sample adjustments

Linux microPlatform changes for 0.21

OSF Unified Linux Kernel updated to the 4.16.15 stable release. U-Boot-Fslc updated to the 2018.05-based release. Core layer updates based on the latest Yocto master changes.

Zephyr microPlatform

Summary

Zephyr v1.12, MCUboot changes for v1.2.0, minor sample adjustments

Highlights

• Zephyr v1.12 is merged; this is the last update from this development tree.
• Various MCUboot updates from v1.2.0, including new dependency on click
• No changes to the sample applications

Components

MCUboot

Features

Click is now mandatory:

• The Python click package is now mandatory to use MCUboot. Users must install it on their development workstations.

New --slot-size imgtool flag:

• The imgtool script has changed incompatibly to require a --slot-size option for ensuring images fit in their slots without explicitly padding them with --pad. If you're calling this script manually, you will need to use this argument. Users of the zmp script are not affected, as it has been kept up to date.

New logging platform abstraction:

• A new mechanism has been added to abstract out the platform-specific logging mechanism. This is the final piece of the core bootutil library that was not behind a proper platform abstraction.

Kconfig for key management:

• A new, mandatory, CONFIG_BOOT_SIGNATURE_KEY_FILE knob was added. This specifies a key file in .PEM format to use when building MCUboot. This replaces hard-coded keys formerly found in the MCUboot source code, allowing MCUboot users to manage keys without having to change the MCUboot source code.

If you're building MCUboot by hand, you will need to either build MCUboot with a CONF_FILE overlay that specifies the path to the key file you would like to use, or edit the prj.conf to uncomment the examples in there. If you're using the zmp tool, the default demonstration key is specified using an overlay generated at runtime; you can use your own keys with the -K / --signing-key option to "zmp build".

Bugs

Miscellaneous fixes:

• Miscellaneous fixes and cleanups include clearing out old image header format cruft from v1 in the assemble.py script, a trailer size calculation fix elsewhere, and more.

Zephyr

Features

Continuous Integration:

• Sanitycheck can now export tests in CSV format.

Bugs

Arches:

• A variety of ARC fixes were merged. These fix overflows in the privileged stack, IRQ offloading, the ADC and watchdog timer priority levels, reset instability, and a couple of issues related to exception handling.

A bug preventing i.MX RT SoCs from booting correctly was fixed as well; this also has the nice benefit of eliminating a vast number of Kconfig warnings emitted when building for other boards.

Bluetooth:

• A fix for a Coverity bug related to corrupted flash storage of persistent settings was merged, along with a fix to retransmit interval handling in the Mesh implementation, and an invalid pointer access after disconnect in the ATT code.

Build:

• A fix to the kernel helpers for the GCC toolchain was merged which resolves unaligned access issues on GCC

  = 7.

Continuous Integration:

• A sanitycheck bug leading to false positive test pass reporting was fixed.

Documentation:

• The final batch of documentation patches covered release notes, issues in the Getting Started guide, initial documentation for the experimental West meta- tool, updates to the security documentation, and some watchdog API documentation.

Kernel:

• Architecture-specific attempts to provide thread arguments using its initial stack layout were replaced with common code, trading off extra memory to fix broken and incomplete implementations in some architectures.

Libraries:

• A fix was merged for a readdir() buffer out of bounds access discovered by Coverity.

Networking:

• An LWM2M bug was fixed which fixes mandatory rate limiting on the frequency of notifications for observed object instance attributes. The LWM2M engine thread priority was also lowered, fixing a thread starvation issue when running LWM2M concurrently with Bluetooth (e.g. as part of a 6LoWPAN setup).

The IPv4 stack now correctly updates the time-to-live value based on the received packet header; a similar fix was merged for IPv6 hop limits.

Samples:

• Some last-minute changes were merged to crypto and networking samples.

The crypto changes appear to have been merged because samples/drivers/crypto is in fact being used as a test case in addition to serving as sample code, so they perhaps could be considered test fixes.

The networking changes were fixes for bugs discovered by Coverity.

Testing:

• A variety of patches fixing up and tuning the test cases were merged in the final days of v1.12 development.

Foundries.io patches:

• A minor change to the WCN14A2A LTE-M modem's Kconfig was merged, fixing what is currently a Kconfiglib warning that upstream has subsequently upgraded to an error.

hawkBit and MQTT sample application

Features

• Not addressed in this update

Bugs

• Not addressed in this update

LWM2M sample application

Features

• Not addressed in this update

Bugs

• Not addressed in this update

Linux microPlatform

Summary

OSF Unified Linux Kernel updated to the 4.16.15 stable release. U-Boot-Fslc updated to the 2018.05-based release. Core layer updates based on the latest Yocto master changes.

Highlights

• OSF Unified Linux Kernel updated to 4.16.15.
• U-Boot-Fslc updated to the 2018.05-based release.

Components

Meta Freescale

Features

Layer Update:

• U-boot-fslc updated to the 2018.05-based release. New i.MX fork for gstreamer1.0, gstreamer1.0-plugins-base, gstreamer1.0-plugins-good and gstreamer1.0-plugins-bad. Imx-codec, imx-parser, imx-vpuwrap and imx-gst1.0-plugin updated to v4.3.4. Imx-usb-loader updated to the e539461 revision.

Bugs

• Not addressed in this update

Meta Freescale 3rdparty

Features

Layer Update:

• Device tree name updated for imx7d-pico. Updated u-boot configuration for imx7s-warp.

Bugs

• Not addressed in this update

Meta Intel

Features

Layer Update:

• New WKS file enabling grub-efi bootloader. Thermald updated to 1.7.2.

Bugs

• Not addressed in this update

Meta Qualcomm

Features

Layer Update:

• Updated bootr and bootrr to the latest revision available.

Bugs

• Not addressed in this update

Meta RaspberryPi

Features

Layer Update:

• Support for the at86rf233 device tree overlay.

Bugs

• Not addressed in this update

Meta Virtualization

Features

Layer Update:

• Lxc updated to 3.0.1. Libvirt updated to v4.3.0. Added tini 0.18.0 recipe to provide docker-init.

Bugs

• Not addressed in this update

Meta Updater Layer

Features

Layer Update:

• HTTP basic auth added to the garage-sign task. Aktualizr updated to the latest revision available, including support to log the ostree update process.

Bugs

• Not addressed in this update

Meta OSF Layer

Features

Layer Update:

• OSF Unified Linux Kernel updated to 4.16.15. Added lmp-device-register recipe, used to register an LMP device with OSF OTA+. Haveged included in lmp-mini-image and lmp-gateway-image to remedy low-entropy during boot. Fbdev MXS driver removed from linux-osf in favor of the drm driver. Python3-requests removed from lmp-mini-image as device registration is now done via lmp-device-register.

Bugs

• Not addressed in this update