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)   |
+|                          |                                                               |                    | 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.