Linux/AM5728: Debug console over Ethernet

Naryeong Kim

Prodigy 250 points

Part Number: AM5728

Tool/software: Linux

my board is am5728 evm

my Kernel version is 4.9.105-ti-rt-r113

I want to use TCP as Debug.

I want to know where is setting file.

is this information enough to using TCP as Debug?

Thank you.

over 7 years ago

0 Biser Gatchev-XID over 7 years ago

TI__Guru**** 393215 points

Please describe what you mean by "use TCP as Debug"?

0 Naryeong Kim over 7 years ago in reply to Biser Gatchev-XID

Prodigy 250 points

UART3 is for Debug. we need to use UART3 in other way not a Debug.
Ethernet maybe the way we looking for.
we want to show Ethernet for Kernel boot log.
is it possible? if it is possible, how can i do

0 Yordan Kovachev over 7 years ago in reply to Naryeong Kim

TI__Guru**** 161600 points

Hi,

You can use ssh to connect to your device via ethernet. And use its console.

Best Regards,
Yordan

0 Naryeong Kim over 7 years ago in reply to Yordan Kovachev

Prodigy 250 points

AM5728-EVM Debug Port is UART3. i want to move on Debug function to Ethernet(MDIO) from UART3.

0 Yordan Kovachev over 7 years ago in reply to Naryeong Kim

TI__Guru**** 161600 points

Yes, I've mentioned the workaround. You can use UART3 for whatever you like (after the corresponding kernel modifications), then when you boot your board you can connect to its serial (debug) console through SSH and you can use dmesg, cat /proc/kmsg and so on to see the kernel logs during bootup and while the board is operational.

Best Regards,
Yordan

0 Naryeong Kim over 7 years ago in reply to Yordan Kovachev

Prodigy 250 points

Thank you for your advice. it's so helpful.
if you are okay, i have a few question.
1. where is proc directory? ( i saw a five directories, i don't know which is)
2. Which part is what i see in kmesg file ?

0 Naryeong Kim over 7 years ago

Prodigy 250 points

Part Number: AM5728

Tool/software: Linux

My board is AM5728 EVM and kernel version is 4.9.105-ti-rt-r113.

I was asked before >>

This is answer of above link.
Yes, I've mentioned the workaround. You can use UART3 for whatever you like (after the corresponding kernel modifications), then when you boot your board you can connect to its serial (debug) console through SSH and you can use dmesg, cat /proc/kmsg and so on to see the kernel logs during bootup and while the board is operational.

but i still have a few question.

1. where is proc directory? ( i saw a five directories, i don't know which is)
2. Which part is what i see in kmesg file ?

0 Yordan Kovachev over 7 years ago in reply to Naryeong Kim

TI__Guru**** 161600 points

Hi,

1. it is located directly under the root directory "/" so the full path to it is /proc

2. this holds kernel messages from the linux os. It is quite verbose and if present it should look like dmesg output, but in the form of a file in /proc. The dmesg command should be enough for you to get the bootup/debug messages from your kernel.

Best Regards,
Yordan

0 Naryeong Kim over 7 years ago in reply to Yordan Kovachev

Prodigy 250 points

You mean that i can print dmesg using by kmsg library, isn't it right?
i want to change to Ethernet from UART3 like below link.

it can possible or not it must use kmsg?

0 Yordan Kovachev over 7 years ago in reply to Naryeong Kim

TI__Guru**** 161600 points

I am sorry, but I cannot understand your question.
You want to use UART3 or Ethernet to connect to your EVM debug console??

If you want to use Ethernet I already answered: USE SSH and then dmesg to see bootlogs (kernel logs).
If you want to use UART3 the thread you link describes all changes needed.

Best Regards,
Yordan

0 Naryeong Kim over 7 years ago in reply to Yordan Kovachev

Prodigy 250 points

Thank you , I'm solved.
I'm sorry about my Insufficient explanation.

0 Yordan Kovachev over 7 years ago in reply to Naryeong Kim

TI__Guru**** 161600 points

Thanks for the feedback. I am closing this thread.
Best Regards,
Yordan

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Linux/AM5728: Debug console over Ethernet