topic Re: Disabling bluetooth in i.MX53 QSB in i.MX Processors

Disabling bluetooth in i.MX53 QSB

Goi — Wed, 19 Sep 2012 07:13:25 GMT

Hi,

I'm trying to forcefully disable bluetooth in an i.MX53 quick start board. I'm doing so by modifying certain files, specifically setting BOARD_HAVE_BLUETOOTH to false in BoardConfigCommon.mk, and commenting out all bluetooth related services in init.rc.

The services commented out are dbus, bluetoothd, hfag, hsag, opush and pbap.

I notice that once I disable dbus, I go into a boot loop. From my research it seems that dbus is used as a simple IPC system for the system server sitting in the Android framework to talk to the hcid. I notice my original init.rc doesn't have the hciattach service as several online resources state. Does anyone know why I'd go into a boot loop with dbus commented out?

Thanks.

Re: Disabling bluetooth in i.MX53 QSB

xinyu_chen — Fri, 21 Sep 2012 02:57:43 GMT

Hi Goi

Only bluez and BT framework using the DBUS, so there maybe other component not disabled correctly.

Please delete the bt capability in device/fsl/imx53_xxx/required_hardware.xml to have a try.

Re: Disabling bluetooth in i.MX53 QSB

Goi — Fri, 21 Sep 2012 06:35:30 GMT

Hi,

Thanks. Was not aware of required_hardware.xml. What exactly does this file do?

Anyway, I tried removing bt capability there, but I still get the same problem. Here's the logcat output I managed to capture.

I/BluetoothProfileState( 2298): Message:Entering Stable State

E/BluetoothEventLoop.cpp( 2298): initializeNativeDataNative: Could not get onto the system bus!

E/libdbus ( 2298): arguments to dbus_connection_set_exit_on_disconnect() were incorrect, assertion "connection != NULL" failed in file external/dbus/dbus/dbus-connection.c line 2887.

E/libdbus ( 2298): This is normally a bug in some application using the D-Bus library.

I/InputManager-Callbacks( 2298): No input device calibration properties found for device CHICONY USB Keyboard.

I/InputManager-Callbacks( 2298): No input device calibration properties found for device da9052_tsi.

I/DEBUG ( 2288): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***

I/DEBUG ( 2288): Build fingerprint: 'freescale/imx53_loco/imx53_loco:2.3.4/GRJ22/eng.goister.20120912.223017:eng/test-keys'

I/DEBUG ( 2288): pid: 2298, tid: 2311 >>> system_server <<<

I/DEBUG ( 2288): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr deadbaad

I/DEBUG ( 2288): r0 00000027 r1 deadbaad r2 a0000000 r3 00000000

I/DEBUG ( 2288): r4 00000001 r5 00000000 r6 6e734028 r7 6e743478

I/DEBUG ( 2288): r8 00000b47 r9 00000000 10 2ea5ae54 fp 401a5368

I/DEBUG ( 2288): ip 6fd46668 sp 2fbfcac8 lr 6fd191d9 pc 6fd15ca4 cpsr 60000030

I/DEBUG ( 2288): d0 2073692073696872 d1 796c6c616d726f79

I/DEBUG ( 2288): d2 692067756220612e d3 6120656d6f73200a

I/DEBUG ( 2288): d4 69746163696c7070 d5 676e697375206e6f

I/DEBUG ( 2288): d6 422d442065687420 d7 617262696c207375

I/DEBUG ( 2288): d8 0000000b1bf90898 d9 0000000000000000

I/DEBUG ( 2288): d10 0000000000000000 d11 0000000000000000

I/DEBUG ( 2288): d12 0000000000000000 d13 0000000000000000

I/DEBUG ( 2288): d14 0000000000000000 d15 0000000000000000

I/DEBUG ( 2288): d16 000000000023fe98 d17 3ff0000000000000

I/DEBUG ( 2288): d18 4030000000000000 d19 412e848000000000

I/DEBUG ( 2288): d20 4059000000000000 d21 3fd99a27ad32ddf5

I/DEBUG ( 2288): d22 3fd24998d6307188 d23 3fcc7288e957b53b

I/DEBUG ( 2288): d24 3fc74721cad6b0ed d25 3fc39a09d078c69f

I/DEBUG ( 2288): d26 0000000000000000 d27 0000000000000000

I/DEBUG ( 2288): d28 0000000000000000 d29 0000000000000000

I/DEBUG ( 2288): d30 0000000000000000 d31 0000000000000000

I/DEBUG ( 2288): scr 80000012

I/DEBUG ( 2288):

I/DEBUG ( 2288): #00 pc 00015ca4 /system/lib/libc.so

I/DEBUG ( 2288): #01 pc 0002cd1c /system/lib/libdbus.so

I/DEBUG ( 2288): #02 pc 0001635c /system/lib/libdbus.so

I/DEBUG ( 2288): #03 pc 0000e95e /system/lib/libdbus.so

I/DEBUG ( 2288): #04 pc 00062472 /system/lib/libandroid_runtime.so

I/DEBUG ( 2288): #05 pc 00017e34 /system/lib/libdvm.so

I/DEBUG ( 2288): #06 pc 0004968c /system/lib/libdvm.so

I/DEBUG ( 2288): #07 pc 0001d034 /system/lib/libdvm.so

I/DEBUG ( 2288): #08 pc 000220e4 /system/lib/libdvm.so

I/DEBUG ( 2288): #09 pc 00020fdc /system/lib/libdvm.so

I/DEBUG ( 2288): #10 pc 0005fc40 /system/lib/libdvm.so

I/DEBUG ( 2288): #11 pc 0005fe54 /system/lib/libdvm.so

I/DEBUG ( 2288): #12 pc 000541aa /system/lib/libdvm.so

I/DEBUG ( 2288): #13 pc 000118e4 /system/lib/libc.so

I/DEBUG ( 2288): #14 pc 000114b0 /system/lib/libc.so

I/DEBUG ( 2288):

I/DEBUG ( 2288): code around pc:

I/DEBUG ( 2288): 6fd15c84 2c006824 e028d1fb b13368db c064f8df

I/DEBUG ( 2288): 6fd15c94 44fc2401 4000f8cc 49124798 25002027

I/DEBUG ( 2288): 6fd15ca4 f7f57008 2106ec7c edd8f7f6 460aa901

I/DEBUG ( 2288): 6fd15cb4 f04f2006 95015380 95029303 e93ef7f6

I/DEBUG ( 2288): 6fd15cc4 462aa905 f7f62002 f7f5e94a 2106ec68

I/DEBUG ( 2288):

I/DEBUG ( 2288): code around lr:

I/DEBUG ( 2288): 6fd191b8 4a0e4b0d e92d447b 589c41f0 26004680

I/DEBUG ( 2288): 6fd191c8 686768a5 f9b5e006 b113300c 47c04628

I/DEBUG ( 2288): 6fd191d8 35544306 37fff117 6824d5f5 d1ef2c00

I/DEBUG ( 2288): 6fd191e8 e8bd4630 bf0081f0 00028344 ffffff88

I/DEBUG ( 2288): 6fd191f8 b086b570 f602fb01 9004460c a804a901

I/DEBUG ( 2288):

I/DEBUG ( 2288): stack:

I/DEBUG ( 2288): 2fbfca88 6fd42664

I/DEBUG ( 2288): 2fbfca8c 000a8f38

I/DEBUG ( 2288): 2fbfca90 00000093

I/DEBUG ( 2288): 2fbfca94 6fd182a1 /system/lib/libc.so

I/DEBUG ( 2288): 2fbfca98 6fd4270c

I/DEBUG ( 2288): 2fbfca9c 6fd426b8

I/DEBUG ( 2288): 2fbfcaa0 00000000

I/DEBUG ( 2288): 2fbfcaa4 6fd191d9 /system/lib/libc.so

I/DEBUG ( 2288): 2fbfcaa8 00000001

I/DEBUG ( 2288): 2fbfcaac 2fbfcadc

I/DEBUG ( 2288): 2fbfcab0 6e734028 /system/lib/libdbus.so

I/DEBUG ( 2288): 2fbfcab4 6e743478

I/DEBUG ( 2288): 2fbfcab8 00000b47

I/DEBUG ( 2288): 2fbfcabc 6fd184fb /system/lib/libc.so

I/DEBUG ( 2288): 2fbfcac0 df002777

I/DEBUG ( 2288): 2fbfcac4 e3a070ad

I/DEBUG ( 2288): #00 2fbfcac8 6e743478

I/DEBUG ( 2288): 2fbfcacc 6e734028 /system/lib/libdbus.so

I/DEBUG ( 2288): 2fbfcad0 6e743478

I/DEBUG ( 2288): 2fbfcad4 6fd1cf75 /system/lib/libc.so

I/DEBUG ( 2288): 2fbfcad8 6e73e9a7 /system/lib/libdbus.so

I/DEBUG ( 2288): 2fbfcadc fffffbdf

I/DEBUG ( 2288): 2fbfcae0 2fbfcacc

I/DEBUG ( 2288): 2fbfcae4 6e743478

I/DEBUG ( 2288): 2fbfcae8 6e743478

I/DEBUG ( 2288): 2fbfcaec 6e72cd1f /system/lib/libdbus.so

I/DEBUG ( 2288): #01 2fbfcaf0 6fd426b8

I/DEBUG ( 2288): 2fbfcaf4 6e716361 /system/lib/libdbus.so

I/DEBUG ( 2288): debuggerd committing suicide to free the zombie!

I/DEBUG ( 2333): debuggerd: Sep 6 2012 11:40:14

Thanks.

Re: Disabling bluetooth in i.MX53 QSB

xinyu_chen — Thu, 29 Oct 2020 09:51:07 GMT

You can disable BT services in: fameworks/base/services/java/com/android/server/SystemServer.java. Like:

diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.ja

index efb88a6..6d301d2 100644

--- a/services/java/com/android/server/SystemServer.java

+++ b/services/java/com/android/server/SystemServer.java

@@ -203,30 +203,7 @@ class ServerThread extends Thread {

             ((ActivityManagerService)ServiceManager.getService("activity"))

                     .setWindowManager(wm);

-            // Skip Bluetooth if we have an emulator kernel

-            // TODO: Use a more reliable check to see if this product should

-            // support Bluetooth - see bug 988521

-            if (SystemProperties.get("ro.kernel.qemu").equals("1")) {

-                Slog.i(TAG, "Registering null Bluetooth Service (emulator)");

-                ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null);

-            } else if (factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL) {

-                Slog.i(TAG, "Registering null Bluetooth Service (factory test)");

-                ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null);

-            } else {

-                Slog.i(TAG, "Bluetooth Service");

-                bluetooth = new BluetoothService(context);

-                ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, bluetooth);

-                bluetooth.initAfterRegistration();

-                bluetoothA2dp = new BluetoothA2dpService(context, bluetooth);

-                ServiceManager.addService(BluetoothA2dpService.BLUETOOTH_A2DP_SERVICE,

-                                          bluetoothA2dp);

-

-                int bluetoothOn = Settings.Secure.getInt(mContentResolver,

-                    Settings.Secure.BLUETOOTH_ON, 0);

-                if (bluetoothOn > 0) {

-                    bluetooth.enable();

-                }

-            }

+       ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null);

         } catch (RuntimeException e) {

             Slog.e("System", "Failure starting core service", e);

Re: Disabling bluetooth in i.MX53 QSB

Goi — Tue, 23 Oct 2012 02:03:32 GMT

Thanks.

I applied the patch, but upon Android build, I get several errors.

prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/bin/ld: out/target/product/imx53_loco/obj/EXECUTABLES/netd_intermediates/PanController.o: in function PanController::startPan():system/netd/PanController.cpp:51: error: undefined reference to 'bt_is_enabled'

prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/bin/ld: out/target/product/imx53_loco/obj/EXECUTABLES/netd_intermediates/SoftapController.o: in function wifi_load_profile(bool):system/netd/SoftapController.cpp:260: error: undefined reference to 'wpa_ctrl_reload'

prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/bin/ld: out/target/product/imx53_loco/obj/EXECUTABLES/netd_intermediates/SoftapController.o: in function wifi_close_hostapd_connection():system/netd/SoftapController.cpp:249: error: undefined reference to 'wpa_ctrl_close'

prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/bin/ld: out/target/product/imx53_loco/obj/EXECUTABLES/netd_intermediates/SoftapController.o: in function wifi_connect_to_hostapd():system/netd/SoftapController.cpp:232: error: undefined reference to 'wpa_ctrl_open'

prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/bin/ld: out/target/product/imx53_loco/obj/EXECUTABLES/netd_intermediates/SoftapController.o: in function wifi_connect_to_hostapd():system/netd/SoftapController.cpp:238: error: undefined reference to 'wpa_ctrl_attach'

prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/bin/ld: out/target/product/imx53_loco/obj/EXECUTABLES/netd_intermediates/SoftapController.o: in function wifi_connect_to_hostapd():system/netd/SoftapController.cpp:239: error: undefined reference to 'wpa_ctrl_close'

prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/bin/ld: out/target/product/imx53_loco/obj/EXECUTABLES/netd_intermediates/SoftapController.o: in function wifi_start_hostapd():system/netd/SoftapController.cpp:140: error: undefined reference to 'wpa_ctrl_cleanup'