random reset on beaglebone black with ti sdk

Hae Ryong Jung

Dear Members,

I have experienced random reset with my beaglebone black which have TI SDK v7.0.

I have flashed prebuild image on eMMC of BBB and only replacing zImage, am335x-boneblack.dtb and modules building with following steps

$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- tisdk_am335x-evm_defconfig

$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- zImage

$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- dtbs

$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- modules

$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- INSTALL_MOD_PATH=/home/xxx/work/kernel/modules modules_install

then BBB is randomly rebooted, sometimes during running application or sometimes do nothing, just in prompt state

rebooting is happened 1 or 2 times per day.

would you please advice me anything to check about it ?

BRs,

HRJung

over 10 years ago

0 Titusrathinaraj Stalin over 10 years ago

TI__Guru** 116100 points

Have you got any kernel message while rebooting ?
Are you seeing this behavior only when you use TI SDK7.0 or any SDK ?
Have you tried with earlier SDK7.0 ?

0 Hae Ryong Jung over 10 years ago in reply to Titusrathinaraj Stalin

Expert 2150 points

Dear Titus,

I have got reset boot log files, I don't know how to attach files in here.

would you please guide me how to ?

I have 3 boot log files, normal boot, reset boot, reset boot after reset.

BRs,

HRJung

0 Titusrathinaraj Stalin over 10 years ago in reply to Hae Ryong Jung

TI__Guru** 116100 points

Hi HRJung,

Click "Use rich formatting" option while you reply and browse the files that you need to upload.

0 Ivan Matrakov over 10 years ago in reply to Hae Ryong Jung

TI__Expert 4475 points

Hi,

I did this what you made many times and I have not any problem. Do this reboot happens if you boot BBB from SD-CARD or you re-flashed the BBB fully with pre-builded images from SDK7.

BR
Ivan

0 Hae Ryong Jung over 10 years ago in reply to Ivan Matrakov

Expert 2150 points

Hi Ivan,

I have flashed eMMC on BBB board following below thread.

e2e.ti.com/.../383573.aspx

this is boot log files.

BBB_normal_boot.txt

7115.BBB_normal_boot.txt

BBB_reset_boot.txt : boot log right after reset

5023.BBB_reset_boot.txt

BBB_reset_boot_after_reset.txt : after above reset, BBB reset again. stayed at log on prompt

8468.BBB_reset_boot_after_reset.txt

As I see, BBB_reset_boot showed PHY is not detected.

please take a look at it and let me know anything to check.

BRs,

HRJung

0 Titusrathinaraj Stalin over 10 years ago in reply to Hae Ryong Jung

TI__Guru** 116100 points

From BBB_normal_boot.txt,

SD/MMC found on device 1

reading uEnv.txt

66 bytes read in 3 ms (21.5 KiB/s)

Loaded environment from uEnv.txt

Importing environment from mmc ...

From BBB_reset_boot_after_reset.txt:

SD/MMC found on device 1

reading uEnv.txt

66 bytes read in 4 ms (15.6 KiB/s)

Loaded environment from uEnv.txt

Importing environment from mmc ...

I've seen some uEnv.txt file changes while booting for the above log.

In that , Ehternet MDIO and PHY is not able to find and may be it could lead to reset but I'm not sure.

Do you have any separate uEnv.txt file on your system.

0 Hae Ryong Jung over 10 years ago in reply to Titusrathinaraj Stalin

Expert 2150 points

Hi Titus,

This is my uEnv.txt

====

root@am335x-evm:/var/volatile/run/media/mmcblk0p1# cat uEnv.txt
bootpart=1:2
mmcroot=/dev/mmcblk0p2
fdtfile=am335x-boneblack.dtb

====

If I don't use this uEnv.txt, BBB cannot boot, there is an error reading dtb file.

please refer to following thread about it

http://e2e.ti.com/support/embedded/linux/f/354/t/383573.aspx

BRs,

HRJung

0 Titusrathinaraj Stalin over 10 years ago in reply to Hae Ryong Jung

TI__Guru** 116100 points

Sorry for the misinterpretation.

By comparing all the three logs,

From BBB_reset_boot_reset.txt, I'm able to see the ethernet PHY failure in u-boot log whereas good boot has ethernet PHY found message in u-boot.

So, please look into the u-boot log and investigate why it is failing some times.

Net: <ethaddr> not set. Validating first E-fuse MAC

Could not get PHY for cpsw: addr 0

cpsw, usb_ether

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random reset on beaglebone black with ti sdk