AM335x No display android UI,logcat show that E/FramebufferNativeWindow( 355): couldn't open framebuffer HAL (Bad address)

Hi nmy,

Can you try without the SGX components?

Easy way to disable SGX is

1) delete system/bin/sgx/rc.pvr

2) delete /system/lib/hw/gralloc.omap3.so.*

The differences you mentioned could not create boot up problems.

What is your panel size and depth?

Could you please check whether pvrsrvkm.ko and omaplfb.ko kernel modules are properly inserted on your platform?

Also there seems to be an issue with the following from the logs, could you please ensure that there are no illegal memory writes -

# devmem2 0x4830A204 

/dev/mem opened.[  108.236082] Unhandled fault: external abort on non-linefetch (0x1018) at 0x40160204

Memory mapped at address 0x40160000.
[  108.358730] Unhandled fault: external abort on non-linefetch (0x1018) at 0x40160204
[1] + Stopped (s[  108.408710] Unhandled fault: external abort on non-linefetch (0x1018) at 0x40160204
ignal)        devmem2 0x4830A204

Regards,

Aditya

Hi Arun:

             Thank you for your reply.

             I have test you suggestion,  disable SGX through

1) delete system/bin/sgx/rc.pvr

2) delete /system/lib/hw/gralloc.omap3.so.*

            Now it can enter android desktop,see follow picture

         but  this  touchscreen is inaccurate  ,and  response is very slow,

And attach logcat and console log

6254.console-log-20120227-1507.txt

2860.logcat-20120227-1507.txt

And you can see touchscreen is init ok in console log and  logcat

[    1.294399] mousedev: PS/2 mouse device common for all mice
[    1.301228] input: ti-tsc-adcc as /devices/platform/tsc/input/input0

 I/EventHub(  137): New device: path=/dev/input/event0 name=ti-tsc-adcc id=0x10000 (of 0x1) index=1 fd=83 classes=0x4
E/EventHub(  137): could not get driver version for /dev/input/mouse0, Not a typewriter

And in logcat , there are much error about alsa,but  I think McASP0 is init ok in console log ,and at android startup ,

i have listen an sound from earphone.

[    1.470820] asoc: tlv320aic3x-hifi <-> davinci-mcasp.0 mapping ok
[    1.478104] ALSA device list:
[    1.481230]   #0: AM335X EVM

so could you help me to analyse  those question.

         1. touchscreen  how to calibrate

         2. why it so slow

         3. alsa why so much error

Thank you very much!

Regards

 nmy

1.If reserve sgx in filesystem , android will stop here

2.if disable sgx in filesystem ,android enter desktop 

The UI response is slow because SGX is disabled on your platform. Can you please re-enable/install SGX and check for the suggestions in my previous post?

Regards,

Aditya

Hi Aditya:

             Thank your reply!

             I have reinstall filesystem,and I found that pvrsrvkm.ko and omaplfb.ko  is in follow folder.

             system/bin/sgx/omaplfb.ko

             system/bin/sgx/pvrsrvkm.ko

             system/bin/sgx/rc.pvr

After system startup, android stop at robot display.

And when I do  devmem2 0x4830A204 command, it show follow

# devmem2 0x4830A204
/dev/mem opened.[  241.581112] Unhandled fault: external abort on non-linefetch (0x1018) at 0x40239204

Memory mapped at address 0x40239000.
[  241.697857] Unhandled fault: external abort on non-linefetch (0x1018) at 0x40239204
[  241.755501] Unhandled fault: external abort on non-linefetch (0x1018) at 0x40239204
[1]   Bus error               devmem2 0x4830A204

If i don't do this commad,

Ps:

      My panel is 7 inch, 800*480, 16bit  RGB depth.

      I also saw someone say that bootargs's vram may be cause some problem. Is it bootarg's problem??

First of all, "vram" in bootargs is not applicable to AM335x devices,  so doesn't have any meaning here.

Also I did not understand what you want to do with the command "devmem2 0x4830A204"??? Which module are you trying to access here?

Please note that, LCDC module is mapped at 0x4830_E000.

Thanks,

Vaibhav

Hi vaibhav:

                 Thanks for your reply!

                  devmem2 0x4830A204  command, I reference follow web site:

                  http://e2e.ti.com/support/embedded/android/f/509/t/125885.aspx

                 So I unsderstand  we can't do this command.

                 Could you help me analyse  those quetion above.

Thank you very much!

Regards

 nmy

I think you should not run that devmem2 command as above. It was meant to check the silicon rev for Beagle board.

On your platform when you execute "lsmod " do you see the kernel modules (*.kos) as pointed in the above post?

if not please execute the "/system/bin/sgx/rc.pvr", that should initialize your platform and boot.

Regards,

Aditya

Hi Aditya:

          Could you help answer other quetion above?

Hi.

         1. touchscreen  how to calibrate

Can you check the wiki http://processors.wiki.ti.com/index.php/TI-Android-GingerBread-2.3.4-DevKit-2.1.1_PortingGuides#Touchscreen and follow the section on calibration?

         2. why it so slow

Can you check the following

1. Check /proc/interrupts to see you are getting interrupts from the touch screen hardware.

2. See getevent to see you are getting events from the input subsystem, when you are touching

         3. alsa why so much error

Are you able to here the audio and is it clear?

Audio controls shown in logcat are outdated and can be ignored. AM335X audio device use the default controls.

I probably have isolated the problem to the MLO file which is generated at the same time that the u-boot file. If I replace the MLO file from the one who is in the pré-compiled image from TI, the kit starts without problems.

I made a new Android Image and use the MLO and u-boot files from the pré-compiled image from TI, to confirm, and it worked.