2907a961f7
Now that PSA is supported on Zephyr and the code base has changed to use that library, TinyCrypt is been deprecate. Reasons for this change can be found in #43712. Signed-off-by: Flavio Ceolin <flavio.ceolin@gmail.com>
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.. _zephyr_4.1:
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Zephyr 4.1.0 (Working Draft)
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############################
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We are pleased to announce the release of Zephyr version 4.1.0.
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Major enhancements with this release include:
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An overview of the changes required or recommended when migrating your application from Zephyr
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v4.0.0 to Zephyr v4.1.0 can be found in the separate :ref:`migration guide<migration_4.1>`.
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The following sections provide detailed lists of changes by component.
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Security Vulnerability Related
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******************************
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The following CVEs are addressed by this release:
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More detailed information can be found in:
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https://docs.zephyrproject.org/latest/security/vulnerabilities.html
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API Changes
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***********
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Removed APIs in this release
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============================
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* The deprecated Bluetooth HCI driver API has been removed. It has been replaced by a
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:c:group:`new API<bt_hci_api>` that follows the normal Zephyr driver model.
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* The deprecated ``CAN_MAX_STD_ID`` (replaced by :c:macro:`CAN_STD_ID_MASK`) and ``CAN_MAX_EXT_ID``
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(replaced by :c:macro:`CAN_EXT_ID_MASK`) CAN API macros have been removed.
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* The deprecated ``can_get_min_bitrate()`` (replaced by :c:func:`can_get_bitrate_min`) and
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``can_get_max_bitrate()`` (replaced by :c:func:`can_get_bitrate_max`) CAN API functions have been
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removed.
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* The deprecated ``can_calc_prescaler()`` CAN API function has been removed.
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Deprecated in this release
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==========================
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* Deprecated the :c:func:`bt_le_set_auto_conn` API function. Application developers can achieve
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the same functionality in their application code by reconnecting to the peer when the
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:c:member:`bt_conn_cb.disconnected` callback is invoked.
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* Deprecated TinyCrypt library. The reasons for this are (:github:`43712`):
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* The upstream version of this library is no longer maintained.
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* Reducing the number of cryptographic libraries in Zephyr to reduce maintenance overhead.
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* The PSA Crypto API is the recommended cryptographic library for Zephyr.
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Architectures
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*************
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* Common
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* Introduced :kconfig:option:`CONFIG_ARCH_HAS_CUSTOM_CURRENT_IMPL`, which can be selected when
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an architecture implemented and enabled its own :c:func:`arch_current_thread` and
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:c:func:`arch_current_thread_set` functions for faster retrieval of the current CPU's thread
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pointer. When enabled, ``_current`` variable will be routed to the
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:c:func:`arch_current_thread` (:github:`80716`).
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* ARC
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* ARM
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* ARM64
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* RISC-V
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* Implements :c:func:`arch_current_thread_set` & :c:func:`arch_current_thread`, which can be enabled
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by :kconfig:option:`CONFIG_RISCV_CURRENT_VIA_GP` (:github:`80716`).
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* Xtensa
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* native/POSIX
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* :kconfig:option:`CONFIG_NATIVE_APPLICATION` has been deprecated.
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* For the native_sim target :kconfig:option:`CONFIG_NATIVE_SIM_NATIVE_POSIX_COMPAT` has been
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switched to ``n`` by default, and this option has been deprecated.
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Kernel
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******
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Bluetooth
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*********
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* Audio
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* Host
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* :kconfig:option:`CONFIG_BT_BUF_ACL_RX_COUNT` has been deprecated and
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:kconfig:option:`CONFIG_BT_BUF_ACL_RX_COUNT_EXTRA` has been added.
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* HCI Drivers
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Boards & SoC Support
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********************
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* Added support for these SoC series:
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* Made these changes in other SoC series:
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* Added support for these boards:
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* Made these board changes:
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* All HWMv1 board name aliases which were added as deprecated in v3.7 are now removed
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(:github:`82247`).
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* Enabled USB, RTC on NXP ``frdm_mcxn236``
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* Added support for the following shields:
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Build system and Infrastructure
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*******************************
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* Space-separated lists support has been removed from Twister configuration
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files. This feature was deprecated a long time ago. Projects that do still use
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them can use the :zephyr_file:`scripts/utils/twister_to_list.py` script to
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automatically migrate Twister configuration files.
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Drivers and Sensors
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*******************
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* ADC
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* Battery
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* CAN
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* Charger
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* Clock control
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* Counter
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* DAC
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* Disk
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* Display
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* Added flag ``frame_incomplete`` to ``display_write`` that indicates whether a write is the last
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write of the frame, allowing display drivers to implement double buffering / tearing enable
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signal handling (:github:`81250`)
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* Added ``frame_incomplete`` handling to SDL display driver (:dtcompatible:`zephyr,sdl-dc`)
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(:github:`81250`)
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* Added transparency support to SDL display driver (:dtcompatible:`zephyr,sdl-dc`) (:github:`81184`)
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* Ethernet
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* Flash
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* FPGA
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* Extracted from :dtcompatible:`lattice,ice40-fpga` the compatible and driver for
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:dtcompatible:`lattice,ice40-fpga-bitbang`. This replaces the original ``load_mode`` property from
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the binding, which selected either the SPI or GPIO bitbang load mode.
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* GNSS
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* GPIO
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* Hardware info
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* I2C
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* I2S
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* I3C
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* Input
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* LED
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* Added a new set of devicetree based LED APIs, see :c:struct:`led_dt_spec`.
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* lp5569: added use of auto-increment functionality.
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* lp5569: implemented ``write_channels`` api.
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* lp5569: demonstrate ``led_write_channels`` in the sample.
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* LED Strip
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* LoRa
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* Mailbox
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* MDIO
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* MFD
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* Modem
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* MIPI-DBI
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* MSPI
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* Pin control
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* Added new driver for Silabs Series 2 (:dtcompatible:`silabs,dbus-pinctrl`).
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* PWM
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* Regulators
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* Reset
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* RTC
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* RTIO
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* SDHC
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* Sensors
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* Serial
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* SPI
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* Stepper
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* Added driver for ADI TMC2209. :dtcompatible:`adi,tmc2209`
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* Added :kconfig:option:`CONFIG_STEP_DIR_STEPPER` to enable common functions for step/dir steppers.
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* USB
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* Video
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* Changed :file:`include/zephyr/drivers/video-controls.h` to have control IDs (CIDs) matching
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those present in the Linux kernel.
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* Watchdog
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* Wi-Fi
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Networking
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**********
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* ARP:
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* CoAP:
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* Connection manager:
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* DHCPv4:
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* DHCPv6:
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* DNS/mDNS/LLMNR:
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* gPTP/PTP:
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* HTTP:
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* IPSP:
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* IPv4:
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* IPv6:
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* LwM2M:
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* Misc:
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* MQTT:
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* Network Interface:
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* OpenThread:
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* Removed the implicit enabling of the :kconfig:option:`CONFIG_NVS` Kconfig option by the :kconfig:option:`CONFIG_NET_L2_OPENTHREAD` symbol.
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* PPP
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* Shell:
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* Sockets:
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* The deprecated :kconfig:option:`CONFIG_NET_SOCKETS_POSIX_NAMES` option has been removed.
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It was a legacy option and was used to allow user to call BSD socket API while not enabling POSIX API.
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This removal means that in order to use POSIX API socket calls, one needs to enable the
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:kconfig:option:`CONFIG_POSIX_API` option.
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If the application does not want or is not able to enable that option, then the socket API
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calls need to be prefixed by a ``zsock_`` string.
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* Syslog:
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* TCP:
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* Websocket:
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* Wi-Fi:
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* zperf:
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USB
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***
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Devicetree
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**********
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* Added :c:macro:`DT_ANY_INST_HAS_BOOL_STATUS_OKAY`.
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Kconfig
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*******
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Libraries / Subsystems
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**********************
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* Debug
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* Demand Paging
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* Formatted output
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* Management
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* Logging
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* Modem modules
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* Power management
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* Crypto
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* The Kconfig symbol :kconfig:option:`CONFIG_MBEDTLS_PSA_STATIC_KEY_SLOTS` was
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added to allow Mbed TLS to use statically allocated buffers to store key material
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in its PSA Crypto core instead of heap-allocated ones. This can help reduce
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(or remove, if no other component makes use of it) heap memory requirements
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from the final application.
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* The Kconfig symbol :kconfig:option:`CONFIG_MBEDTLS_PSA_KEY_SLOT_COUNT` was
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added to allow selecting the number of key slots available in the Mbed TLS
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implementation of the PSA Crypto core. It defaults to 16. Since each
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slot consumes RAM memory even if unused, this value can be tweaked in order
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to minimize RAM usage.
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* CMSIS-NN
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* FPGA
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* Random
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* SD
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* State Machine Framework
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* Storage
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* Task Watchdog
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* POSIX API
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* LoRa/LoRaWAN
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* ZBus
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HALs
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****
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* Nordic
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* STM32
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* ADI
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* Espressif
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MCUboot
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*******
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OSDP
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****
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Trusted Firmware-M
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******************
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LVGL
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****
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* Added ``frame_incomplete`` support to indicate whether a write is the last
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write of the frame (:github:`81250`)
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Tests and Samples
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*****************
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* Fixed incorrect alpha values in :zephyr_file:`samples/drivers/display`. (:github:`81184`)
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* Added :zephyr_file:`samples/modules/lvgl/screen_transparency`. (:github:`81184`)
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Issue Related Items
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*******************
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Known Issues
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============
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