microPlatform update 0.2

Summary

Zephyr microPlatform changes for 0.2

"This is the final release which uses the Linux kernel Kbuild build system. The next release will have a CMake-based build system. **All out of tree applications will need updates** to their build systems to move to CMake. Refer to the Zephyr Application Development Primer for details:

http://docs.zephyrproject.org/application/application.html"

Linux microPlatform changes for 0.2

Linux microPlatform build system improvements to easy the platform build process in docker containers.

Layer updates for meta-osf, meta-freescale-3rdparty meta-qcom, meta-raspberrypi and openembedded-core and meta-linaro.

Zephyr microPlatform

Summary

"This is the final release which uses the Linux kernel Kbuild build system. The next release will have a CMake-based build system. **All out of tree applications will need updates** to their build systems to move to CMake. Refer to the Zephyr Application Development Primer for details:

http://docs.zephyrproject.org/application/application.html"

Highlights

  • Final Zephyr commit before the build system moves to CMake
  • MCUBoot memory and flash space optimizations

Components

MCUBoot

Features

Simulator tests rewritten in Cargo test format:
  • "The simulator tests have been rewritten to use Rust's native testing framework. Users can run the tests by running "cargo test" from the sim/ directory."
mbedTLS memory allocator:
  • The Zephyr port now uses a memory allocator from mbedTLS, which provides some memory and flash savings over the native Zephyr allocator.
New overwrite-only mode optimization option:
  • The overwrite-only update mode has a new option which provides a performance optimization at the cost of not erasing all of the old images. The optimization, when enabled, only deletes the sectors in slot 0 needed to copy in the update in slot 1. This is the new default when overwrite-only is chosen.

Bugs

  • Not addressed in this update

Zephyr

Features

Final KBuild-based commit:
  • This is the **final Zephyr patch** which uses Kbuild as the build system. The next Zephyr tree released will use CMake. Applications should prepare for a build system rewrite.
Memory domains for x86:
  • Memory domain APIs were implemented and merged for x86 and ARM targets. These allow generic API access to architecture-specific hardware which can isolate memory areas to individual threads.
Jailhouse support:
  • "Zephyr can now be run as a Jailhouse hypervisor's "inmate cell". This port boots with the processor in real mode, and handles the transition to 32-bit protected mode before jumping to Zephyr's start code. Detailed usage instructions are given in the commit message for 97a871 ("x86: Jailhouse port, tested for UART (# 0, polling) and LOAPIC timer")."
Bluetooth Mesh friend support:
  • Complete Friend support was merged for Bluetooth Mesh, with corresponding updates to samples/bluetooth/mesh.
STM32 NUCLEO-F091RC board support:
  • SoC support for the STM32F091 has been added, along with board support for NUCLEO-F091RC.
Tickless kernel for XTensa:
  • A tickless kernel implementation was merged for XTensa targets.
DTS partition resizes for Nordic DKs:
  • Official nRF52 targets from Nordic (nrf52_pca10040, nrf52840_pca10056) had their DTS partitions tweaked, which may affect mcuboot users on those targets.
User mode documentation:
  • Documentation was added for the user mode threads kernel feature.
USB CDC improvements:
  • Continuing improvements and breaking changes to USB were merged, targeting the Communications Device Class. In particular, the usb_cdc.h header has replaced cdc_acm.h, as part of a series of changes improving support for CDC ethernet devices. The zperf performance testing application received a netusb confinguration for testing and using these changes, along with a build regression fix.
Networking improvements:
  • In networking, the TCP implementation received support for options parsing and storage of sent MSS, among other improvements.

Bugs

Bluetooth Mesh fixes:
  • Numerous bug fixes to Bluetooth Mesh were merged (affecting provisioning, network decryption, credentials selection, transport layer heartbeat subscription matching, and more).
LWM2M fixes:
  • "A pair of LWM2M fixes were also merged, which fix the engine's response to the peer when a write fails and avoid a possible null pointer dereference."

Zephyr FOTA Samples

Features

  • Not addressed in this update

Bugs

dm-lwm2m: Fix for temperature min/max values:
  • A bug fix was merged to the LWM2M demonstration application which properly maintains the minimum and maximum observed temperature values managed by the IPSO temperature object.

Linux microPlatform

Summary

Linux microPlatform build system improvements to easy the platform build process in docker containers.

Layer updates for meta-osf, meta-freescale-3rdparty meta-qcom, meta-raspberrypi and openembedded-core and meta-linaro.

Highlights

  • Build system improvements to easy the platform build process in docker containers
  • Removal of the ACCEPT_EULA variable for firmware-qcom-dragonboard410c
  • SD card image now available for DragonBoard-410c

Components

Meta OSF Layer

Features

Layer Update:
  • Default distro maintainer set to OSF Support. Clear TCLIBCAPPEND for a single TMPDIR as LMP only supports one libc at this point. Default git repository and namespace used by the Linux recipe changed to use the subscriber repository by default.

Bugs

  • Not addressed in this update

Meta Freescale 3rdparty Layer

Features

Layer Update:
  • U-boot-toradex updated to 2016.11 (toradex bsp 2.7.4). SPL, wic and device tree machine fixes for apalis-imx6 and colibri-imx7. Added device tree for the aster carrier board and migrated colibri-vf machine configuration to use wic image format.

Bugs

  • Not addressed in this update

Meta Linaro Layer

Features

Layer Update:
  • linux.inc no longer includes linux-dtb.inc, removing a build warning. Stress-ng recipe removed as it was merged into meta-oe.

Bugs

  • Not addressed in this update

Meta Qualcomm Layer

Features

Layer Update:
  • Removal of the ACCEPT_EULA variable for firmware-qcom-dragonboard410c. Added firmware recipe and package for DragonBoard-820c. Added support for a bootable SD card image for DragonBoard-410c.

Bugs

  • Not addressed in this update

Meta RaspberryPi Layer

Features

Layer Update:
  • Disable asm for raspberrypi0-wifi when building x264.

Bugs

  • Not addressed in this update

OpenEmbedded-Core Layer

Features

Layer Update:
  • Tzdata updated to 2017c. Bind updated to 9.10.6. OpenSSH updated to 7.6. Wic now supports part-name argument for naming GPT partitions. Util-linux updated to 2.31. libxml2 updated to 2.9.7. Wget updated to 1.19.2. Expact updated to 2.2.5.

Bugs

bind:
wget:

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