Add split-slot A/B sample #25036

tomchy · 2025-10-14T18:21:36Z

Add A/B sample variant, that describe multi-image FW through a MCUboot manifest with digests.

NordicBuilder · 2025-10-14T18:22:19Z

The following west manifest projects have changed revision in this Pull Request:

Name	Old Revision	New Revision	Diff
mcuboot	nrfconnect/sdk-mcuboot@`3839107`	nrfconnect/sdk-mcuboot@`9ba25b8` (`main`)	nrfconnect/[email protected]

✅ All manifest checks OK

Note: This message is automatically posted and updated by the Manifest GitHub Action.

NordicBuilder · 2025-10-14T18:22:40Z

CI Information

^{To view the history of this post, click the 'edited' button above}
Build number: 43

Inputs:

Sources:

sdk-nrf: PR head: 445ebb3fc58df6ae2f5f4beac511c2f5c34a4d63
mcuboot: PR head: 9ba25b87567fceaea2e290fbda6be30ebc00625c

more details

sdk-nrf:

PR head: 445ebb3fc58df6ae2f5f4beac511c2f5c34a4d63
merge base: 4d30ec68e3b28425ba031e4255d4046bdf450fb0
target head (main): 0ebd718d51a7b4f29fe2e9bcc0721b4baee4e7f0
Diff

mcuboot:

PR head: 9ba25b87567fceaea2e290fbda6be30ebc00625c
merge base: 3839107e52c7228eba123129a3806fb3391781d6
Diff

Github labels

Enabled	Name	Description
	ci-disabled	Disable the ci execution
	ci-all-test	Run all of ci, no test spec filtering will be done
	ci-force-downstream	Force execution of downstream even if twister fails
	ci-run-twister	Force run twister
	ci-run-zephyr-twister	Force run zephyr twister

List of changed files detected by CI (62)

CODEOWNERS
bootloader
│  ├── mcuboot
│  │  ├── boot
│  │  │  ├── boot_serial
│  │  │  │  ├── src
│  │  │  │  │  │ boot_serial_encryption.c
│  │  │  ├── bootutil
│  │  │  │  ├── CMakeLists.txt
│  │  │  │  ├── include
│  │  │  │  │  ├── bootutil
│  │  │  │  │  │  ├── bootutil.h
│  │  │  │  │  │  ├── enc_key.h
│  │  │  │  │  │  ├── image.h
│  │  │  │  │  │  │ mcuboot_manifest.h
│  │  │  │  ├── src
│  │  │  │  │  ├── bootutil_area.c
│  │  │  │  │  ├── bootutil_area.h
│  │  │  │  │  ├── bootutil_img_hash.c
│  │  │  │  │  ├── bootutil_loader.c
│  │  │  │  │  ├── bootutil_loader.h
│  │  │  │  │  ├── bootutil_misc.c
│  │  │  │  │  ├── bootutil_misc.h
│  │  │  │  │  ├── bootutil_priv.h
│  │  │  │  │  ├── bootutil_public.c
│  │  │  │  │  ├── ed25519_psa.c
│  │  │  │  │  ├── encrypted.c
│  │  │  │  │  ├── image_validate.c
│  │  │  │  │  ├── loader.c
│  │  │  │  │  ├── loader_manifest_xip.c
│  │  │  │  │  ├── mcuboot_manifest.c
│  │  │  │  │  ├── ram_load.c
│  │  │  │  │  ├── swap_misc.c
│  │  │  │  │  ├── swap_offset.c
│  │  │  │  │  │ swap_scratch.c
│  │  │  │  ├── zephyr
│  │  │  │  │  │ CMakeLists.txt
│  │  │  ├── espressif
│  │  │  │  │ CMakeLists.txt
│  │  │  ├── zephyr
│  │  │  │  ├── CMakeLists.txt
│  │  │  │  ├── Kconfig
│  │  │  │  ├── decompression.c
│  │  │  │  ├── include
│  │  │  │  │  ├── mcuboot_config
│  │  │  │  │  │  │ mcuboot_config.h
│  │  ├── docs
│  │  │  │ design.md
│  │  ├── scripts
│  │  │  ├── imgtool
│  │  │  │  ├── image.py
│  │  │  │  │ main.py
│  │  ├── sim
│  │  │  ├── Cargo.toml
│  │  │  ├── mcuboot-sys
│  │  │  │  ├── Cargo.toml
│  │  │  │  │ build.rs
│  │  │  ├── src
│  │  │  │  ├── image.rs
│  │  │  │  │ lib.rs
│  │  │  ├── tests
│  │  │  │  │ core.rs
cmake
│  ├── sysbuild
│  │  ├── image_signing.cmake
│  │  │ mcuboot_manifest.cmake
samples
│  ├── dfu
│  │  ├── ab_split
│  │  │  ├── CMakeLists.txt
│  │  │  ├── Kconfig
│  │  │  ├── README.rst
│  │  │  ├── boards
│  │  │  │  │ nrf54h20dk_nrf54h20_cpuapp.overlay
│  │  │  ├── prj.conf
│  │  │  ├── sample.yaml
│  │  │  ├── src
│  │  │  │  ├── ab_utils.c
│  │  │  │  ├── ab_utils.h
│  │  │  │  │ main.c
│  │  │  ├── sysbuild.conf
│  │  │  ├── sysbuild
│  │  │  │  ├── mcuboot
│  │  │  │  │  ├── boards
│  │  │  │  │  │  │ nrf54h20dk_nrf54h20_cpuapp.overlay
│  │  │  │  │  │ prj.conf
│  │  │  │  │ nrf54h20dk_nrf54h20_memory_map.dtsi
subsys
│  ├── bootloader
│  │  │ Kconfig
│  ├── mgmt
│  │  ├── mcumgr
│  │  │  ├── grp
│  │  │  │  ├── img_mgmt
│  │  │  │  │  ├── src
│  │  │  │  │  │  ├── img_mgmt.c
│  │  │  │  │  │  │ img_mgmt_state.c
sysbuild
│  ├── CMakeLists.txt
│  │ Kconfig.mcuboot
west.yml

Outputs:

Toolchain

Version:
Build docker image:

Test Spec & Results: ✅ Success; ❌ Failure; 🟠 Queued; 🟡 Progress; ◻️ Skipped; ⚠️ Quarantine

◻️ Toolchain
◻️ Build twister
◻️ Integration tests
- ◻️ test-sdk-audio
- ◻️ desktop52_verification
- ◻️ test-fw-nrfconnect-apps
- ◻️ test_ble_nrf_config
- ◻️ test-fw-nrfconnect-ble_mesh
- ◻️ test-fw-nrfconnect-ble_samples
- ◻️ test-fw-nrfconnect-chip
- ◻️ test-fw-nrfconnect-nfc
- ◻️ test-fw-nrfconnect-nrf-iot_libmodem-nrf
- ◻️ test-fw-nrfconnect-nrf-iot_zephyr_lwm2m
- ◻️ test-fw-nrfconnect-nrf-iot_samples
- ◻️ test-fw-nrfconnect-nrf-iot_lwm2m
- ◻️ test-fw-nrfconnect-nrf-iot_thingy91
- ◻️ test-fw-nrfconnect-nrf_crypto
- ◻️ test-fw-nrfconnect-rpc
- ◻️ test-fw-nrfconnect-rs
- ◻️ test-fw-nrfconnect-fem
- ◻️ test-fw-nrfconnect-tfm
- ◻️ test-fw-nrfconnect-thread-main
- ◻️ test-sdk-find-my
- ◻️ test-fw-nrfconnect-nrf_lrcs_positioning
- ◻️ test-sdk-wifi
- ◻️ test-low-level
- ◻️ test-sdk-mcuboot
- ◻️ test-sdk-dfu
- ◻️ test-fw-nrfconnect-ps-main
- ◻️ test-secdom-samples-public
- ⚠️ test-fw-nrfconnect-nrf-iot_cloud

Note: This message is automatically posted and updated by the CI

NordicBuilder · 2025-10-14T19:43:53Z

Memory footprint analysis revealed the following potential issues

applications.hpf.gpio.icbmsg[nrf54l15dk/nrf54l15/cpuflpr]: High RAM usage: 12744[B] - link (cc: @nrfconnect/ncs-ll-ursus)
applications.hpf.gpio.icbmsg[nrf54l15dk/nrf54l15/cpuflpr]: High ROM usage: 9492[B] - link (cc: @nrfconnect/ncs-ll-ursus)
applications.hpf.gpio.icmsg[nrf54l15dk/nrf54l15/cpuflpr]: High RAM usage: 9102[B] - link (cc: @nrfconnect/ncs-ll-ursus)
applications.hpf.gpio.icmsg[nrf54l15dk/nrf54l15/cpuflpr]: High ROM usage: 5858[B] - link (cc: @nrfconnect/ncs-ll-ursus)

Note: This message is automatically posted and updated by the CI (latest/sdk-nrf/PR-25036/41)

Copilot

Pull Request Overview

This PR adds A/B update sample variant demonstrating multi-image firmware updates through MCUboot manifests with digests, enabling transactional updates of multiple images atomically. The implementation introduces manifest-based dependency management for split-slot DirectXIP configurations.

Key Changes:

Adds manifest-based transactional update support in MCUboot configuration
Implements a new A/B split-slot sample demonstrating separated application and radio core images
Updates image management code to handle manifest verification and slot selection

Reviewed Changes

Copilot reviewed 24 out of 24 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
west.yml	Updates Zephyr and MCUboot revisions to pull requests supporting manifest features
sysbuild/Kconfig.mcuboot	Adds Kconfig options for manifest-based transactional updates
sysbuild/CMakeLists.txt	Implements manifest image target assignment and configuration propagation
subsys/mgmt/mcumgr/grp/img_mgmt/src/img_mgmt_state.c	Modifies slot state handling to use manifest image when manifest updates enabled
subsys/mgmt/mcumgr/grp/img_mgmt/src/img_mgmt.c	Adds full img_mgmt implementation with manifest verification support
subsys/mgmt/mcumgr/grp/img_mgmt/Kconfig	Adds QSPI XIP split image configuration option
subsys/mgmt/mcumgr/grp/img_mgmt/CMakeLists.txt	Updates build to include new img_mgmt.c and marks upstream file as header-only
subsys/bootloader/Kconfig	Adds application-side Kconfig options for manifest updates
scripts/ci/license_allow_list.yaml	Adds img_mgmt.c to Apache-2.0 license allowlist
samples/dfu/ab_split/*	New sample demonstrating A/B updates with separated slots and manifest-based dependencies
cmake/sysbuild/mcuboot_manifest.cmake	Implements manifest YAML generation for primary and secondary slots
cmake/sysbuild/image_signing.cmake	Adds manifest appending to imgtool signing process

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subsys/mgmt/mcumgr/grp/img_mgmt/src/img_mgmt_state.c

subsys/mgmt/mcumgr/grp/img_mgmt/src/img_mgmt.c

samples/dfu/ab_split/README.rst

Copilot

Pull Request Overview

Copilot reviewed 24 out of 24 changed files in this pull request and generated 1 comment.

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subsys/mgmt/mcumgr/grp/img_mgmt/src/img_mgmt_state.c

Copilot

Pull Request Overview

Copilot reviewed 22 out of 22 changed files in this pull request and generated 3 comments.

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sysbuild/CMakeLists.txt

subsys/mgmt/mcumgr/grp/img_mgmt/src/img_mgmt.c

samples/dfu/ab_split/README.rst

github-actions · 2025-11-17T15:01:34Z

You can find the documentation preview for this PR here.

Preview links for modified nRF Connect SDK documents:

https://ncsdoc.z6.web.core.windows.net/PR-25036/nrf/samples/dfu/ab_split/README.html

Copilot

Pull Request Overview

Copilot reviewed 22 out of 22 changed files in this pull request and generated 5 comments.

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sysbuild/Kconfig.mcuboot

sysbuild/CMakeLists.txt

subsys/mgmt/mcumgr/grp/img_mgmt/src/img_mgmt_state.c

subsys/mgmt/mcumgr/grp/img_mgmt/src/img_mgmt.c

samples/dfu/ab_split/README.rst

nordicjm

Fix described issue in a future PR

samples/dfu/ab_split/CMakeLists.txt

ahasztag · 2025-11-19T08:53:23Z

cmake/sysbuild/mcuboot_manifest.cmake

+set(manifest_secondary_path "manifest_secondary.yaml")
+set(manifest_img_slot_1 "mcuboot_secondary_app")
+
+# Since the default (merged) image is excluded from the manifest, because it contains the manifest


Isn't the reason simply that we do not need the manifest for merged images at all, because there is no need for dependency handling in this case?

Correct. Manifests cannot be used if there is only a single image.

Copilot

Pull Request Overview

Copilot reviewed 22 out of 22 changed files in this pull request and generated 1 comment.

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samples/dfu/ab_split/README.rst

Copilot

Pull Request Overview

Copilot reviewed 22 out of 22 changed files in this pull request and generated no new comments.

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Add a possibility to automatically generate a MCUboot manifest with all expected image's digests. Signed-off-by: Tomasz Chyrowicz <[email protected]>

Add routines to parse and check manifest state. Signed-off-by: Tomasz Chyrowicz <[email protected]>

Add a variant of the A/B sample that presents how to perform A/B updates in a system, where application and radio images uses separate images and slots. Ref: NCSDK-35733 Signed-off-by: Tomasz Chyrowicz <[email protected]>

Extend the app with a logic that reads the current security counter and bootloader version values from the bootloader info. Signed-off-by: Tomasz Chyrowicz <[email protected]>

Copilot

Pull Request Overview

Copilot reviewed 22 out of 22 changed files in this pull request and generated 3 comments.

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subsys/mgmt/mcumgr/grp/img_mgmt/src/img_mgmt.c

samples/dfu/ab_split/README.rst

NordicBuilder added doc-required PR must not be merged without tech writer approval. manifest changelog-entry-required Update changelog before merge. Remove label if entry is not needed or already added. labels Oct 14, 2025

NordicBuilder added manifest-mcuboot DNM labels Oct 14, 2025

tomchy force-pushed the feature/mcuboot/NCSDK-NONE_Transaction_manifest branch from b649761 to 40e458e Compare October 17, 2025 15:19

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tomchy force-pushed the feature/mcuboot/NCSDK-NONE_Transaction_manifest branch from 40e458e to f89b505 Compare October 22, 2025 13:53

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tomchy added 4 commits November 20, 2025 14:51

sysbuild: Add a MCUboot manifest generator

eb14778

Add a possibility to automatically generate a MCUboot manifest with all expected image's digests. Signed-off-by: Tomasz Chyrowicz <[email protected]>

mgmt: Handle manifest-based states

9facdc1

Add routines to parse and check manifest state. Signed-off-by: Tomasz Chyrowicz <[email protected]>

samples: Add split slot A/B sample

5b677e6

Add a variant of the A/B sample that presents how to perform A/B updates in a system, where application and radio images uses separate images and slots. Ref: NCSDK-35733 Signed-off-by: Tomasz Chyrowicz <[email protected]>

ab_split: Log bootloader version and counter value

445ebb3

Extend the app with a logic that reads the current security counter and bootloader version values from the bootloader info. Signed-off-by: Tomasz Chyrowicz <[email protected]>

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tomchy mentioned this pull request Nov 20, 2025

manifest: sdk-mcuboot: NCSDK-33237: Add manifest-based loader for Direct XIP #25184

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tomchy merged commit 9943fc1 into nrfconnect:main Nov 20, 2025
20 of 21 checks passed

Add split-slot A/B sample #25036

Add split-slot A/B sample #25036

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Sources:

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Outputs:

Toolchain

Test Spec & Results: ✅ Success; ❌ Failure; 🟠 Queued; 🟡 Progress; ◻️ Skipped; ⚠️ Quarantine

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Memory footprint analysis revealed the following potential issues

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NordicBuilder commented Oct 14, 2025 •

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