95aaa97dc3
Adding new CONFIG_MBEDTLS_PSA_KEY_SLOT_COUNT to select the number of key slots in PSA Crypto core. The default value is 16. Be aware that key slots consume RAM memory even if unused, so the proper value should be a compromise between the number of slots required by the application and the available RAM in the system. This commit also: - updates tests/crypto/secp256r1/mbedtls.conf to showcase how to use this new symbol to reduce RAM footprint. - tests/bsim/bluetooth/mesh/overlay_psa.conf to support all the keys used in the test. Signed-off-by: Valerio Setti <vsetti@baylibre.com>
190 lines
4.4 KiB
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190 lines
4.4 KiB
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:orphan:
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.. _migration_4.1:
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Migration guide to Zephyr v4.1.0 (Working Draft)
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################################################
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This document describes the changes required when migrating your application from Zephyr v4.0.0 to
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Zephyr v4.1.0.
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Any other changes (not directly related to migrating applications) can be found in
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the :ref:`release notes<zephyr_4.1>`.
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.. contents::
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:local:
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:depth: 2
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Build System
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************
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Kernel
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******
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Boards
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******
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Modules
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*******
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Mbed TLS
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========
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* If a platform has a CSPRNG source available (i.e. :kconfig:option:`CONFIG_CSPRNG_ENABLED`
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is set), then the Kconfig option :kconfig:option:`CONFIG_MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG`
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is the default choice for random number source instead of
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:kconfig:option:`CONFIG_MBEDTLS_PSA_CRYPTO_LEGACY_RNG`. This helps in reducing
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ROM/RAM footprint of the Mbed TLS library.
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* The newly-added Kconfig option :kconfig:option:`CONFIG_MBEDTLS_PSA_KEY_SLOT_COUNT`
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allows to specify the number of key slots available in the PSA Crypto core.
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Previously this value was not explicitly set, so Mbed TLS's default value of
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32 was used. The new Kconfig option defaults to 16 instead in order to find
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a reasonable compromise between RAM consumption and most common use cases.
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It can be further trimmed down to reduce RAM consumption if the final
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application doesn't need that many key slots simultaneously.
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Trusted Firmware-M
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==================
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LVGL
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====
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* The config option :kconfig:option:`CONFIG_LV_Z_FLUSH_THREAD_PRIO` is now called
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:kconfig:option:`CONFIG_LV_Z_FLUSH_THREAD_PRIORITY` and its value is now interpreted as an
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absolute priority instead of a cooperative one.
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Device Drivers and Devicetree
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*****************************
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Controller Area Network (CAN)
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=============================
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Display
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=======
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* Displays using the MIPI DBI driver which set their MIPI DBI mode via the
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``mipi-mode`` property in devicetree should now use a string property of
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the same name, like so:
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.. code-block:: devicetree
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/* Legacy display definition */
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st7735r: st7735r@0 {
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...
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mipi-mode = <MIPI_DBI_MODE_SPI_4WIRE>;
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...
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};
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/* New display definition */
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st7735r: st7735r@0 {
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...
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mipi-mode = "MIPI_DBI_MODE_SPI_4WIRE";
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...
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};
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Enhanced Serial Peripheral Interface (eSPI)
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===========================================
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GNSS
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====
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Input
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=====
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Interrupt Controller
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====================
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LED Strip
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=========
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Pin Control
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===========
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* Renamed the ``compatible`` from ``nxp,kinetis-pinctrl`` to :dtcompatible:`nxp,port-pinctrl`.
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* Renamed the ``compatible`` from ``nxp,kinetis-pinmux`` to :dtcompatible:`nxp,port-pinmux`.
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Sensors
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=======
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Serial
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======
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Stepper
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=======
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* Renamed the ``compatible`` from ``zephyr,gpio-steppers`` to :dtcompatible:`zephyr,gpio-stepper`.
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Regulator
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=========
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Bluetooth
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*********
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Bluetooth HCI
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=============
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Bluetooth Mesh
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==============
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Bluetooth Audio
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===============
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* The following Kconfig options are not longer automatically enabled by the LE Audio Kconfig
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options and may need to be enabled manually (:github:`81328`):
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* :kconfig:option:`CONFIG_BT_GATT_CLIENT`
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* :kconfig:option:`CONFIG_BT_GATT_AUTO_DISCOVER_CCC`
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* :kconfig:option:`CONFIG_BT_GATT_AUTO_UPDATE_MTU`
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* :kconfig:option:`CONFIG_BT_EXT_ADV`
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* :kconfig:option:`CONFIG_BT_PER_ADV_SYNC`
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* :kconfig:option:`CONFIG_BT_ISO_BROADCASTER`
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* :kconfig:option:`CONFIG_BT_ISO_SYNC_RECEIVER`
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* :kconfig:option:`CONFIG_BT_PAC_SNK`
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* :kconfig:option:`CONFIG_BT_PAC_SRC`
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Bluetooth Classic
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=================
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Bluetooth Host
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==============
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Bluetooth Crypto
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================
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Networking
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**********
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Other Subsystems
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****************
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Flash map
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=========
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hawkBit
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=======
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MCUmgr
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======
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Modem
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=====
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Architectures
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*************
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* Common
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* ``_current`` is deprecated, used :c:func:`arch_current_thread` instead.
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* native/POSIX
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* :kconfig:option:`CONFIG_NATIVE_APPLICATION` has been deprecated. Out-of-tree boards using this
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option should migrate to the native_simulator runner (:github:`81232`).
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For an example of how this was done with a board in-tree check :github:`61481`.
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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. Ensure your code does not
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use the :kconfig:option:`CONFIG_BOARD_NATIVE_POSIX` option anymore (:github:`81232`).
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