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

Added hook implementation for disabling Bluetooth in the hook
of MCUmgr OS reboot command.
Disabling of bluetooth allow to restart it properly after the
warm boot.

Ref: NCSDK-36564

Signed-off-by: Andrzej Puzdrowski <[email protected]>

Author: nvlsianpu

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 +1,59 @@
+/*
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+#include <zcbor_common.h>
+#include <zcbor_encode.h>
+#include <pm_config.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);
+
+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)
+{
+	int err_rc;
+	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_BT
+	err_rc = bt_disable();
+	if (err_rc) {
+		LOG_ERR("BT disable failed before reboot: %d", err_rc);
+	}
+#endif
+#ifdef CONFIG_MPSL
+	mpsl_uninit();
+#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);