Disabling bluetooth in i.MX53 QSB

[Goi]

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.

[xinyu_chen]

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.

[Goi]

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

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 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.

[xinyu_chen]

Hi

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);

[Goi]

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'