doc: app_dev: dfu: Update minimum sizes for bootloader

The minimum sizes for release builds are now smaller

Signed-off-by: Jamie McCrae <[email protected]>

Author: nordicjm

doc/nrf-bm/app_dev/dfu/ug_dfu.rst

@@ -18,20 +18,21 @@ Partition Configuration
 The memory of your device must be partitioned appropriately to accommodate the bootloader, application, and firmware update mechanisms.
 |BMshort| uses Zephyr's `DTS`_ system for memory partitioning.
 
-+--------------------------+---------------------------------------------------------------+--------------------+-------------------+
-| Partition Name           | Description                                                   | Minimum size  |br| | Minimum size |br| |
-|                          |                                                               | (Development)      | (Release)         |
-+==========================+===============================================================+====================+===================+
-| ``boot_partition``       | Bootloader (MCUboot)                                          | 36 KB              | 28 KB             |
-+--------------------------+---------------------------------------------------------------+--------------------+-------------------+
-| ``slot0_partition``      | Main application slot                                         |                    |                   |
-+--------------------------+---------------------------------------------------------------+--------------------+-------------------+
-| ``slot1_partition``      | `Firmware loader`_                                            | 44 KB              | 28 KB             |
-+--------------------------+---------------------------------------------------------------+--------------------+-------------------+
-| ``softdevice_partition`` | For the SoftDevice, including an MCUboot header of size 0x800 |                                        |
-+--------------------------+---------------------------------------------------------------+--------------------+-------------------+
-| ``metadata_partition``   | Stores metadata, placed at the last 0x200 of NVM              |                    |                   |
-+--------------------------+---------------------------------------------------------------+--------------------+-------------------+
++--------------------------+---------------------------------------------------------------+--------------------+-------------------------+
+| Partition Name           | Description                                                   | Minimum size  |br| | Minimum size |br|       |
+|                          |                                                               | (Development)      | (Release)               |
++==========================+===============================================================+====================+=========================+
+| ``boot_partition``       | Bootloader (MCUboot)                                          | 31 KiB             | 21 KiB (using KMU) |br| |
+|                          |                                                               |                    | 26 KiB (without KMU)    |
++--------------------------+---------------------------------------------------------------+--------------------+-------------------------+
+| ``slot0_partition``      | Main application slot                                         |                    |                         |
++--------------------------+---------------------------------------------------------------+--------------------+-------------------------+
+| ``slot1_partition``      | `Firmware loader`_                                            | 44 KiB             | 28 KiB                  |
++--------------------------+---------------------------------------------------------------+--------------------+-------------------------+
+| ``softdevice_partition`` | For the SoftDevice, including an MCUboot header of size 0x800 |                                              |
++--------------------------+---------------------------------------------------------------+--------------------+-------------------------+
+| ``metadata_partition``   | Stores metadata, placed at the last 0x200 of NVM              |                    |                         |
++--------------------------+---------------------------------------------------------------+--------------------+-------------------------+
 
 .. note::
    The sizes and configurations of slot0 and slot1 are asymmetrical.

doc/nrf-bm/links.txt

@@ -60,6 +60,8 @@
 .. _`System reset`: https://docs.zephyrproject.org/latest/services/device_mgmt/smp_groups/smp_group_0.html#system-reset
 .. _`Image tool`: https://docs.mcuboot.com/imgtool.html
 .. _`Vector table requirement`: https://developer.arm.com/documentation/100235/0002/sqf1486724325622
+.. _`Introduction to KMU key provisioning`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/app_dev/device_guides/nrf54l/kmu_basics.html
+.. _`Performing KMU provisioning`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/app_dev/device_guides/nrf54l/kmu_provision.html
 
 .. ### Release notes