Zephyr 3.5.0 (Working Draft)

We are pleased to announce the release of Zephyr version 3.5.0.

Major enhancements with this release include:

The following sections provide detailed lists of changes by component.

Security Vulnerability Related

Kernel

Architectures

• ARM

• ARM

• ARM64

• RISC-V

• Xtensa

Bluetooth

• Audio

• Direction Finding

• Host

• Mesh

• Controller

• HCI Driver

Boards & SoC Support

• Added support for these SoC series:

  • Nuvoton NuMaker M46x series

• Removed support for these SoC series:

• Made these changes in other SoC series:

  • i.MX RT SOCs no longer enable CONFIG_DEVICE_CONFIGURATION_DATA by default. boards using external SDRAM should set CONFIG_DEVICE_CONFIGURATION_DATA and CONFIG_NXP_IMX_EXTERNAL_SDRAM to enabled.

  • i.MX RT SOCs no longer support CONFIG_OCRAM_NOCACHE, as this functionality can be achieved using devicetree memory regions

• Added support for these ARC boards:

• Added support for these ARM boards:

  • Nuvoton NuMaker Platform M467

• Added support for these ARM64 boards:

• Added support for these RISC-V boards:

• Added support for these X86 boards:

• Added support for these Xtensa boards:

• Made these changes for ARC boards:

• Made these changes for ARM boards:

• Made these changes for ARM64 boards:

• Made these changes for RISC-V boards:

• Made these changes for X86 boards:

• Made these changes for Xtensa boards:

• Removed support for these ARC boards:

• Removed support for these ARM boards:

• Removed support for these ARM64 boards:

• Removed support for these RISC-V boards:

• Removed support for these X86 boards:

• Removed support for these Xtensa boards:

• Made these changes in other boards:

• Added support for these following shields:

Build system and infrastructure

• SCA (Static Code Analysis)

  • Added support for CodeChecker

Drivers and Sensors

• ADC

• Battery-backed RAM

• CAN

• Clock control

  • Added support for Nuvoton NuMaker M46x

• Counter

• Crypto

• DAC

• DFU

• Disk

• Display

• DMA

• EEPROM

• Entropy

• ESPI

• Ethernet

  • Added CONFIG_ETH_NATIVE_POSIX_RX_TIMEOUT to set rx timeout for native posix.

• Flash

  • Introduce npcx flash driver that supports two or more spi nor flashes via a single Flash Interface Unit (FIU) module and Direct Read Access (DRA) mode for better performance.

  • Added support for Nuvoton NuMaker M46x embedded flash

• FPGA

• Fuel Gauge

• GPIO

  • Added support for Nuvoton NuMaker M46x

• hwinfo

• I2C

• I2S

• I3C

• IEEE 802.15.4

• Interrupt Controller

  • GIC: Architecture version selection is now based on the device tree

• IPM

• KSCAN

• LED

• MBOX

• MEMC

• PCIE

• PECI

• Pin control

  • Added support for Nuvoton NuMaker M46x

• PWM

• Power domain

• Regulators

• Reset

  • Added support for Nuvoton NuMaker M46x

• SDHC

• Sensor

• Serial

  • Added support for Nuvoton NuMaker M46x

• SPI

  • Remove npcx spi driver implemented by Flash Interface Unit (FIU) module.

• Timer

  • The TI CC13xx/26xx system clock timer compatible was changed from ti,cc13xx-cc26xx-rtc to ti,cc13xx-cc26xx-rtc-timer and the corresponding Kconfig option from CC13X2_CC26X2_RTC_TIMER to CC13XX_CC26XX_RTC_TIMER for improved consistency and extensibility. No action is required unless the internal timer was modified.

• USB

• W1

• Watchdog

• WiFi

Networking

• Time and timestamps in the network subsystem, PTP and IEEE 802.15.4 were more precisely specified and all in-tree call sites updated accordingly. Fields for timed TX and TX/RX timestamps have been consolidated. See net_time_t, net_ptp_time, ieee802154_config, ieee802154_radio_api and net_pkt for extensive documentation. As this is largely an internal API, existing applications will most probably continue to work unchanged.

• CoAP:

  • Use 64 bit timer values for calculating transmission timeouts. This fixes potential problems for devices that stay on for more than 49 days when the 32 bit uptime counter might roll over and cause CoAP packets to not timeout at all on this event.

• LwM2M:

  • Added support for tickless mode. This removes the 500 ms timeout from the socket loop so the engine does not constantly wake up the CPU. This can be enabled by CONFIG_LWM2M_TICKLESS.

  • Added new LWM2M_RD_CLIENT_EVENT_DEREGISTER event.

• Wi-Fi * Added Passive scan support. * The Wi-Fi scan API updated with Wi-Fi scan parameter to allow scan mode selection.

USB

Devicetree

• zephyr,memory-region-mpu was renamed zephyr,memory-attr

• The following macros were added: DT_FOREACH_NODE_VARGS, DT_FOREACH_STATUS_OKAY_NODE_VARGS DT_MEMORY_ATTR_FOREACH_NODE DT_MEMORY_ATTR_APPLY DT_MEM_FROM_FIXED_PARTITION DT_FIXED_PARTITION_ADDR

Libraries / Subsystems

• Management

  • Introduced MCUmgr client support with handlers for img_mgmt and os_mgmt.

  • Added response checking to MCUmgr’s MGMT_EVT_OP_CMD_RECV notification callback to allow applications to reject MCUmgr commands.

  • MCUmgr SMP version 2 error translation (to legacy MCUmgr error code) is now supported in function handlers by setting mg_translate_error of mgmt_group when registering a transport. See smp_translate_error_fn for function details.

  • Fixed an issue with MCUmgr img_mgmt group whereby the size of the upload in the initial packet was not checked.

  • Fixed an issue with MCUmgr fs_mgmt group whereby some status codes were not checked properly, this meant that the error returned might not be the correct error, but would only occur in situations where an error was already present.

  • Fixed an issue whereby the SMP response function did not check to see if the initial zcbor map was created successfully.

  • Fixes an issue with MCUmgr shell_mgmt group whereby the length of a received command was not properly checked.

  • Added optional mutex locking support to MCUmgr img_mgmt group, which can be enabled with CONFIG_MCUMGR_GRP_IMG_MUTEX.

  • Added MCUmgr settings management group, which allows for manipulation of zephyr settings from a remote device, see Settings (Config) Management Group for details.

  • Added CONFIG_MCUMGR_GRP_IMG_ALLOW_CONFIRM_NON_ACTIVE_IMAGE_SECONDARY and CONFIG_MCUMGR_GRP_IMG_ALLOW_CONFIRM_NON_ACTIVE_IMAGE_ANY that allow to control whether MCUmgr client will be allowed to confirm non-active images.

  • Added CONFIG_MCUMGR_GRP_IMG_ALLOW_ERASE_PENDING that allows to erase slots pending for next boot, that are not revert slots.

• File systems

  • Added support for ext2 file system.

  • Added support of mounting littlefs on the block device from the shell/fs.

  • Added alignment parameter to FS_LITTLEFS_DECLARE_CUSTOM_CONFIG macro, it can speed up read/write operation for SDMMC devices in case when we align buffers on CONFIG_SDHC_BUFFER_ALIGNMENT, because we can avoid extra copy of data from card bffer to read/prog buffer.

HALs

• Nuvoton

  • Added Nuvoton NuMaker M46x

MCUboot

• Added CONFIG_MCUBOOT_BOOTLOADER_NO_DOWNGRADE that allows to inform application that the on-board MCUboot has been configured with downgrade prevention enabled. This option is automatically selected for DirectXIP mode and is available for both swap modes.

• Added CONFIG_MCUBOOT_BOOTLOADER_MODE_OVERWRITE_ONLY that allows to inform application that the on-board MCUboot will overwrite the primary slot with secondary slot contents, without saving the original image in primary slot.

Storage

Trusted Firmware-M

Trusted Firmware-A

• Updated to TF-A 2.9.0.

zcbor

Documentation

Tests and Samples

• Created common sample for file systems (fs_sample). It originates from sample for FAT (fat_fs) and supports both FAT and ext2 file systems.

Known Issues