ReCompile Kernel for Debian Image

XFer · August 02, 2013, 08:31:43 PM

Right now, I'm trying to have 3.4 branch working.
I'm pulling sunxi-3.4, they merged in a sun7i-defconfig now, hopefully it'll compile.

vinifr · August 04, 2013, 06:52:05 AM

Hi,

linux-sunxi into branch stage/sunxi-3.4 already includes several patches to A20 https://github.com/linux-sunxi/linux-sunxi/tree/stage/sunxi-3.4

https://github.com/linux-sunxi/linux-sunxi/blob/stage/sunxi-3.4/arch/arm/configs/sun7i_defconfig

XFer · August 04, 2013, 11:47:30 AM

I pulled sunxi-3.4 (not the stage version) and it has a sun7i_defconfig.
I managed to compile everything, uImage and modules, but the A20 doesn't boot, does not even start writing a kernel log.
My board is headless so I have an hard time debugging kernel-related issues (I don't have the time to look for a serial-USB cable to set up a debugging console).
I guess I'll wait for more mature kernels, or for Olimex own repository (their kernel works fine, but it's incomplete).

vinifr · August 04, 2013, 04:44:14 PM

Only stage/sunxi-3.4 has Hans' and hramrach's patches to A20, look sun7i: https://github.com/linux-sunxi/linux-sunxi/commits/stage/sunxi-3.4

Do you tried it?

XFer · August 04, 2013, 09:57:26 PM

The kernel I downloaded has A20 patches (I contacted Hans directly), despite not being the stage branch.
So that's not the issue. Anyway I'm tired of trying any possible kernel. I'll wait for Dimitar to return from holidays, he should publish source and config then.

isidoro · August 05, 2013, 10:53:05 AM

Quote from: XFer on August 04, 2013, 11:47:30 AM
I pulled sunxi-3.4 (not the stage version) and it has a sun7i_defconfig.
I managed to compile everything, uImage and modules, but the A20 doesn't boot, does not even start writing a kernel log.
My board is headless so I have an hard time debugging kernel-related issues (I don't have the time to look for a serial-USB cable to set up a debugging console).
I guess I'll wait for more mature kernels, or for Olimex own repository (their kernel works fine, but it's incomplete).

as in new 3.4 kernel they modifed machine id for sun7i
(see here http://linux-sunxi.org/Cubieboard2_wheezy_image and here http://androtab.info/cubieboard2/)
your uEnv.txt must begin with this line:
machid=0x10bb

meanwhile for kernel 3.3 machid remain 0xf35, but as it is saved in u-boot env, it is not necessary.

isidoro · August 06, 2013, 01:41:10 AM

Quote from: isidoro on August 02, 2013, 04:27:20 PM
https://github.com/patrickhwood/linux-sunxi/archive/sunxi-3.3-cb2.zip

just compiled with gcc 4.6.3, this is config:
http://pastebin.com/e3yPQ7dp

In the meanwhilte I' studiyng on how to put binary file (uImage and modules ) on amazon or google doc.

XFer · August 06, 2013, 01:03:40 PM

That's great, Gianni!

Could you please share your uEnv.txt and script.fex?
I suspect my problems lie there.

Thanks!

isidoro · August 06, 2013, 03:28:36 PM

Quote from: XFer on August 06, 2013, 01:03:40 PM
Could you please share your uEnv.txt and script.fex?
I suspect my problems lie there.

Thanks!

uEnv.txt:
console=ttyS0,115200
root=/dev/mmcblk0p2
loglevel=8
panic=10

fex file untouched , default script.bin.

XFer · August 06, 2013, 06:05:00 PM

That's really nasty!

I temporary attached an HDMI screen: my kernel (now from stage/sunxi-3.4) starts and shows the login prompt.
But does not load the network, who knows why.
So being an headless board, I can't do anything.

The A20 Ethernet driver is built in the kernel, not even as a module, so it can't be a module loading issue.
It's going to be a long and painful debug!

Thanks for your support Gianni. Eventually I'll resort to your already built kernel if I can't sort this out.

Fernando

isidoro · August 06, 2013, 08:09:57 PM

Quote from: XFer on August 06, 2013, 06:05:00 PM
That's really nasty!
I temporary attached an HDMI screen: my kernel (now from stage/sunxi-3.4) starts and shows the login prompt.
But does not load the network, who knows why.
So being an headless board, I can't do anything.
The A20 Ethernet driver is built in the kernel, not even as a module, so it can't be a module loading issue.

Fernando

Please, once login , do a : dmesg | grep eth
Or dmesg | grep wemac .

XFer · August 06, 2013, 08:27:23 PM

If I could login, I'd already done that.

I have no USB keyboard to attach to it (not even a HDMI screen, actually, that was a brief test at a friend's house), so I can't login without a working Ethernet.

XFer · August 07, 2013, 06:23:52 PM