driver: bluetooth: hci: Support NXP BT CTLR FW blobs

Add Kconfig.nxp to support NXP Bluetooth Chipset.
Current only NXP IW612 Chipset (BT_NXP_NW612) has
been supported.

Add modules/hal_nxp/bt_controller/CMakeLists.txt to
determine whether any firmware is selected, and
check whether the firmware exists.

If the firmware exists, copy the firmware to the
temporary folder ${ZEPHYR_BINARY_DIR}/include/
generated/bt_nxp_ctlr_fw.h. OR, raise a fatal error.

In file hci_nxp_setup.c, includes the temporary file
bt_nxp_ctlr_fw.h.

Signed-off-by: Lyle Zhu <lyle.zhu@nxp.com>

drivers/bluetooth/hci/Kconfig

@@ -250,29 +250,14 @@ config BT_SILABS_HCI_BUFFER_MEMORY
 	  Bluetooth Library.
 
 config BT_H4_NXP_CTLR
-	bool "NXP Bluetooth Controller [EXPERIMENTAL]"
+	bool "NXP Bluetooth Controller"
 	select GPIO
-	# select UART_USE_RUNTIME_CONFIGURE
-	select EXPERIMENTAL
 	depends on BT_H4
 	select CRC
 	default y
 	depends on DT_HAS_NXP_BT_HCI_UART_ENABLED
 	help
 	  Enables support for NXP Bluetooth Controller.
-	  Murata 2EL M.2 Moudle base on NXP IW612 Chipset which supports
-	  Wi-Fi® 802.11a/b/g/n/ac/ax + Bluetooth® 5.3 BR/EDR/LE + IEEE802.1.5.4
-	  up to 601 Mbps data rate on Wi-Fi® and 2Mbps data rate on Bluetooth®.
-	  4-wire UART@3M baud is supported. PCM for audio is also supported.
-	  Details of the module could be fond on
-	  https://www.embeddedartists.com/products/2el-m-2-module/
-
-	  The configuration depends on the firmware (named uart_nw61x_se.h)
-	  of Murata 2EL M.2 Moudle. It could be downloaded here
-	  https://github.com/NXP/wifi_nxp/blob/MCUX_2.15.000/wifi_bt_firmware/nw61x/uart_nw61x_se.h
-	  And it needs to be placed into the folder <zephyrproject>/zephyr/
-	  drivers/bluetooth/hci.
-
 	  More inforamtion about NXP Bluetooth profuct could be found on
 	  https://www.nxp.com/products/wireless-connectivity/wi-fi-plus-bluetooth-plus-802-15-4:WIFI-BLUETOOTH
 

drivers/bluetooth/hci/Kconfig.nxp

@@ -1,5 +1,5 @@
 #
-# Copyright 2023 NXP
+# Copyright 2023-2024 NXP
 #
 # SPDX-License-Identifier: Apache-2.0
 #
@@ -22,3 +22,19 @@ config HCI_NXP_SET_CAL_DATA_ANNEX100
 	help
 	  If enabled, the Host will send calibration data annex 100 to the BLE Controller during HCI
 	  init.
+
+if BT_H4_NXP_CTLR
+
+config BT_NXP_NW612
+	bool "NXP IW612 Chipset"
+	help
+	  NXP IW612 Chipset supports Wi-Fi? 802.11a/b/g/n/ac/ax + Bluetooth? 5.3
+	  BR/EDR/LE + IEEE802.1.5.4 up to 601 Mbps data rate on Wi-Fi? and 2Mbps
+	  data rate on Bluetooth?. 4-wire UART@3M baud is supported. PCM for
+	  audio is also supported.
+	  Details of the module could be fond on https://www.nxp.com/products/
+	  wireless-connectivity/wi-fi-plus-bluetooth-plus-802-15-4/2-4-5-ghz-
+	  dual-band-1x1-wi-fi-6-802-11ax-plus-bluetooth-5-4-plus-802-15-4-tri-
+	  radio-solution:IW612.
+
+endif # BT_H4_NXP_CTLR

drivers/bluetooth/hci/hci_nxp_setup.c

@@ -24,7 +24,7 @@ LOG_MODULE_REGISTER(bt_nxp_ctlr);
 
 #include "common/bt_str.h"
 
-#include "uart_nw61x_se.h"
+#include "bt_nxp_ctlr_fw.h"
 
 #define DT_DRV_COMPAT nxp_bt_hci_uart
 

modules/hal_nxp/CMakeLists.txt

@@ -23,4 +23,6 @@ if(CONFIG_HAS_MCUX OR CONFIG_HAS_IMX_HAL OR CONFIG_HAS_NXP_S32_HAL)
   if(CONFIG_NOCACHE_MEMORY)
     zephyr_compile_definitions_ifdef(CONFIG_USB_DEVICE_DRIVER DATA_SECTION_IS_CACHEABLE=1)
   endif()
+
+  add_subdirectory_ifdef(CONFIG_BT_H4_NXP_CTLR bt_controller)
 endif()

modules/hal_nxp/bt_controller/CMakeLists.txt

@@ -0,0 +1,23 @@
+#
+# Copyright 2024 NXP
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+set(hal_nxp_dir           ${ZEPHYR_HAL_NXP_MODULE_DIR})
+set(hal_nxp_blobs_dir     ${hal_nxp_dir}/zephyr/blobs)
+set(blob_gen_file         ${ZEPHYR_BINARY_DIR}/include/generated/bt_nxp_ctlr_fw.h)
+
+if(CONFIG_BT_NXP_NW612)
+    set(blob_file ${hal_nxp_blobs_dir}/iw612/uart_nw61x_se.h)
+endif()
+
+if (NOT DEFINED blob_file)
+    message(FATAL_ERROR "Unsupported controller. Please select a BT conntroller, refer to ./driver/bluetooth/hci/Kconfig.nxp")
+endif()
+
+if(EXISTS ${blob_file})
+    configure_file(${blob_file} ${blob_gen_file} COPYONLY)
+else()
+    message(FATAL_ERROR "Can't find controller firmware, please fetch blobs by using command: \'west blobs fetch hal_nxp\'")
+endif()