mcumgr/grp/os_mgmt: hook for disabling BT on nrf54Lx

subsys/mgmt/mcumgr/grp/os_mgmt/CMakeLists.txt

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2024 Nordic Semiconductor ASA
+# Copyright (c) 2024-2025 Nordic Semiconductor ASA
 #
 # SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 #
@@ -8,3 +8,8 @@ if(CONFIG_MCUMGR_GRP_OS_BOOTLOADER_INFO_B0_ACTIVE_SLOT)
   zephyr_library_amend()
   zephyr_library_sources(src/os_mgmt_b0_active_slot.c)
 endif()
+
+if(CONFIG_MCUMGR_GRP_OS_REBOOT_BT)
+  zephyr_library_amend()
+  zephyr_library_sources(src/os_mgmt_reboot_bt.c)
+endif()

subsys/mgmt/mcumgr/grp/os_mgmt/Kconfig

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2024 Nordic Semiconductor ASA
+# Copyright (c) 2024-2025 Nordic Semiconductor ASA
 #
 # SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 #
@@ -19,4 +19,13 @@ config MCUMGR_GRP_OS_BOOTLOADER_INFO_B0_ACTIVE_SLOT
 	  Enables a bootloader info command for `active_b0_slot` which will return the active b0
 	  image slot number, and can be used to determine which update image should be loaded.
 
+config MCUMGR_GRP_OS_REBOOT_BT
+	bool
+	default y
+	depends on MCUMGR_GRP_OS
+	depends on (BT || MPSL)
+	depends on SOC_SERIES_NRF54LX
+	select MCUMGR_MGMT_NOTIFICATION_HOOKS
+	select MCUMGR_GRP_OS_RESET_HOOK
+
 endmenu

subsys/mgmt/mcumgr/grp/os_mgmt/src/os_mgmt_reboot_bt.c

@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+#include <zcbor_common.h>
+#include <zcbor_encode.h>
+#include <zephyr/mgmt/mcumgr/mgmt/callbacks.h>
+#include <zephyr/mgmt/mcumgr/grp/os_mgmt/os_mgmt.h>
+#include <zephyr/logging/log.h>
+
+#ifdef CONFIG_BT
+#include <zephyr/bluetooth/bluetooth.h>
+#endif
+#ifdef CONFIG_MPSL
+#include <mpsl.h>
+#endif
+
+LOG_MODULE_REGISTER(os_mgmt_reboot_bt, CONFIG_MCUMGR_GRP_OS_LOG_LEVEL);
+
+#ifdef CONFIG_MULTITHREADING
+static void bt_disable_work_handler(struct k_work *work);
+
+static K_WORK_DELAYABLE_DEFINE(bt_disable_work, bt_disable_work_handler);
+
+static void bt_disable_work_handler(struct k_work *work)
+{
+	ARG_UNUSED(work);
+
+#ifdef CONFIG_BT
+	int err_rc = bt_disable();
+
+	if (err_rc) {
+		LOG_ERR("BT disable failed before reboot: %d", err_rc);
+	}
+#endif
+#ifdef CONFIG_MPSL
+	mpsl_uninit();
+#endif
+}
+#endif
+
+static enum mgmt_cb_return reboot_bt_hook(uint32_t event, enum mgmt_cb_return prev_status,
+					  int32_t *rc, uint16_t *group, bool *abort_more,
+					  void *data, size_t data_size)
+{
+	struct os_mgmt_reset_data *reboot_data = (struct os_mgmt_reset_data *)data;
+
+	if (event != MGMT_EVT_OP_OS_MGMT_RESET || data_size != sizeof(*reboot_data)) {
+		*rc = MGMT_ERR_EUNKNOWN;
+		return MGMT_CB_ERROR_RC;
+	}
+#ifdef CONFIG_MULTITHREADING
+	/* disable bluetooth from the system workqueue thread. */
+	k_work_schedule(&bt_disable_work, K_MSEC(CONFIG_MCUMGR_GRP_OS_RESET_MS/2));
+#else
+#ifdef CONFIG_BT
+	int err_rc = bt_disable();
+
+	if (err_rc) {
+		LOG_ERR("BT disable failed before reboot: %d", err_rc);
+	}
+#endif
+#ifdef CONFIG_MPSL
+	mpsl_uninit();
+#endif
+#endif
+
+	return MGMT_CB_OK;
+}
+
+static struct mgmt_callback cmd_reboot_bt_info_cb  = {
+	.callback = reboot_bt_hook,
+	.event_id = MGMT_EVT_OP_OS_MGMT_RESET,
+};
+
+static int os_mgmt_register_reboot_bt(void)
+{
+	mgmt_callback_register(&cmd_reboot_bt_info_cb);
+	return 0;
+}
+
+SYS_INIT(os_mgmt_register_reboot_bt, APPLICATION, 0);