[nrf toup] [nrfconnect] Add support for SUIT over Matter OTA

Added support for multi-image dfu target while using SUIT.

Signed-off-by: Arkadiusz Balys <arkadiusz.balys@nordicsemi.no>

Author: ArekBalysNordic

config/nrfconnect/chip-module/Kconfig

@@ -104,10 +104,12 @@ config CHIP_DFU_LIBRARY_MCUMGR
 
 config CHIP_DFU_LIBRARY_DFU_TARGET
 	bool "Use dfu target library for Matter DFU purposes"
-	# MCUBOOT
-	imply DFU_MULTI_IMAGE if CHIP_BOOTLOADER_MCUBOOT
+	imply DFU_MULTI_IMAGE
 	# SUIT
 	imply DFU_TARGET_SUIT if CHIP_BOOTLOADER_SUIT
+	# Initialize SUIT dfu by dfu target if not using mcumgr.
+	# If using mcumgr, SUIT dfu is initialized by mcumgr.
+	imply DFU_TARGET_SUIT_INITIALIZE_SUIT if (!CHIP_DFU_LIBRARY_MCUMGR && CHIP_BOOTLOADER_SUIT)
 	# COMMON
 	imply DFU_TARGET
 	imply STREAM_FLASH

config/nrfconnect/chip-module/Kconfig.defaults

@@ -219,11 +219,11 @@ config BOOT_IMAGE_ACCESS_HOOKS
 
 config UPDATEABLE_IMAGE_NUMBER
     default 3 if NRF_WIFI_PATCHES_EXT_FLASH_STORE
-    default 2 if SOC_SERIES_NRF53X
-    default 1 if SUIT # SUIT does not support the multi-image dfu
+    default 2 if SOC_SERIES_NRF53X || CHIP_BOOTLOADER_SUIT
 
 config DFU_MULTI_IMAGE_MAX_IMAGE_COUNT
     default 3 if NRF_WIFI_PATCHES_EXT_FLASH_STORE
+    default 2 if CHIP_BOOTLOADER_SUIT
 
 config NRF_WIFI_FW_PATCH_DFU
     default y if NRF_WIFI_PATCHES_EXT_FLASH_STORE

src/platform/nrfconnect/OTAImageProcessorImpl.cpp

@@ -35,13 +35,13 @@
 
 #include <dfu/dfu_target.h>
 
-#ifdef CONFIG_SUIT
+#ifdef CONFIG_DFU_TARGET_SUIT
 #include <dfu/dfu_target_suit.h>
 #else
-#include <dfu/dfu_multi_image.h>
 #include <dfu/dfu_target_mcuboot.h>
 #include <zephyr/dfu/mcuboot.h>
 #endif
+#include <dfu/dfu_multi_image.h>
 
 #include <zephyr/logging/log.h>
 #include <zephyr/pm/device.h>
@@ -96,21 +96,32 @@ CHIP_ERROR OTAImageProcessorImpl::PrepareDownloadImpl()
 {
     mHeaderParser.Init();
     mParams = {};
-#ifndef CONFIG_SUIT
+#ifdef CONFIG_DFU_TARGET_SUIT
+    ReturnErrorOnFailure(System::MapErrorZephyr(dfu_target_suit_set_buf(mBuffer, sizeof(mBuffer))));
+#else
     ReturnErrorOnFailure(System::MapErrorZephyr(dfu_target_mcuboot_set_buf(mBuffer, sizeof(mBuffer))));
+#endif // CONFIG_DFU_TARGET_SUIT
     ReturnErrorOnFailure(System::MapErrorZephyr(dfu_multi_image_init(mBuffer, sizeof(mBuffer))));
 
     for (int image_id = 0; image_id < CONFIG_UPDATEABLE_IMAGE_NUMBER; ++image_id)
     {
         dfu_image_writer writer;
+
+#ifdef CONFIG_DFU_TARGET_SUIT
+        // The first image is the SUIT manifest and must be placed in id=0, while all other images must be placed in id + 1,
+        // because id=1 is dedicated for internal DFU purposes when the SUIT manifest contains the firmware.
+        // In our case, we use cache processing, so we need to put firmware images starting from id=2.
+        writer.image_id = image_id == 0 ? image_id : image_id + 1;
+        writer.open     = [](int id, size_t size) { return dfu_target_init(DFU_TARGET_IMAGE_TYPE_SUIT, id, size, nullptr); };
+#else
         writer.image_id = image_id;
         writer.open     = [](int id, size_t size) { return dfu_target_init(DFU_TARGET_IMAGE_TYPE_MCUBOOT, id, size, nullptr); };
-        writer.write    = [](const uint8_t * chunk, size_t chunk_size) { return dfu_target_write(chunk, chunk_size); };
-        writer.close    = [](bool success) { return success ? dfu_target_done(success) : dfu_target_reset(); };
+#endif
+        writer.write = [](const uint8_t * chunk, size_t chunk_size) { return dfu_target_write(chunk, chunk_size); };
+        writer.close = [](bool success) { return success ? dfu_target_done(success) : dfu_target_reset(); };
 
         ReturnErrorOnFailure(System::MapErrorZephyr(dfu_multi_image_register_writer(&writer)));
     };
-#endif
 
 #ifdef CONFIG_CHIP_CERTIFICATION_DECLARATION_STORAGE
     dfu_image_writer cdWriter;
@@ -137,24 +148,14 @@ CHIP_ERROR OTAImageProcessorImpl::Finalize()
     PostOTAStateChangeEvent(DeviceLayer::kOtaDownloadComplete);
     DFUSync::GetInstance().Free(mDfuSyncMutexId);
 
-#ifdef CONFIG_SUIT
-    mDfuTargetSuitInitialized = false;
-    return System::MapErrorZephyr(dfu_target_done(true));
-#else
     return System::MapErrorZephyr(dfu_multi_image_done(true));
-#endif
 }
 
 CHIP_ERROR OTAImageProcessorImpl::Abort()
 {
     CHIP_ERROR error;
 
-#ifdef CONFIG_SUIT
-    error                     = System::MapErrorZephyr(dfu_target_reset());
-    mDfuTargetSuitInitialized = false;
-#else
     error = System::MapErrorZephyr(dfu_multi_image_done(false));
-#endif
 
     DFUSync::GetInstance().Free(mDfuSyncMutexId);
     TriggerFlashAction(ExternalFlashManager::Action::SLEEP);
@@ -167,10 +168,6 @@ CHIP_ERROR OTAImageProcessorImpl::Apply()
 {
     PostOTAStateChangeEvent(DeviceLayer::kOtaApplyInProgress);
 
-#ifdef CONFIG_SUIT
-    mDfuTargetSuitInitialized = false;
-#endif
-
     // Schedule update of all images
     int err = dfu_target_schedule_update(-1);
 
@@ -184,7 +181,11 @@ CHIP_ERROR OTAImageProcessorImpl::Apply()
             [](System::Layer *, void * /* context */) {
                 PlatformMgr().HandleServerShuttingDown();
                 k_msleep(CHIP_DEVICE_CONFIG_SERVER_SHUTDOWN_ACTIONS_SLEEP_MS);
+#ifdef CONFIG_DFU_TARGET_SUIT
+                dfu_target_suit_reboot();
+#else
                 Reboot(SoftwareRebootReason::kSoftwareUpdate);
+#endif
             },
             nullptr /* context */);
     }
@@ -204,16 +205,6 @@ CHIP_ERROR OTAImageProcessorImpl::ProcessBlock(ByteSpan & aBlock)
 
     CHIP_ERROR error = ProcessHeader(aBlock);
 
-#ifdef CONFIG_SUIT
-    if (!mDfuTargetSuitInitialized && error == CHIP_NO_ERROR)
-    {
-        ReturnErrorOnFailure(System::MapErrorZephyr(dfu_target_suit_set_buf(mBuffer, sizeof(mBuffer))));
-        ReturnErrorOnFailure(System::MapErrorZephyr(
-            dfu_target_init(DFU_TARGET_IMAGE_TYPE_SUIT, 0, static_cast<size_t>(mParams.totalFileBytes), nullptr)));
-        mDfuTargetSuitInitialized = true;
-    }
-#endif
-
     if (error == CHIP_NO_ERROR)
     {
         // DFU target library buffers data internally, so do not clone the block data.
@@ -223,12 +214,8 @@ CHIP_ERROR OTAImageProcessorImpl::ProcessBlock(ByteSpan & aBlock)
         }
         else
         {
-#ifdef CONFIG_SUIT
-            int err = dfu_target_write(aBlock.data(), aBlock.size());
-#else
             int err = dfu_multi_image_write(static_cast<size_t>(mParams.downloadedBytes), aBlock.data(), aBlock.size());
             mParams.downloadedBytes += aBlock.size();
-#endif
             error = System::MapErrorZephyr(err);
         }
     }