Dne St 14. července 2010 19:20:34 Maciek Błachnio napsal(a):

Hi Marek,

Hi,

linux-arm-kernel, u-boot CCed.

I found your address in the description of a kernel module and decided to give it a shot. I'm sure I am one of many, but I wonder if you could help me with one thing.

What kernel module if I may ask?

I've managed to build a custom linux kernel for ARMv5 along with all the modules, booted a full Debian system under QEMU, but can't, for the life of me, boot it on the WMT ARM926EJ-S machine.

What machine is it?

Maybe you have an idea what must be done to boot that darn thing. When I flashed it with "abrasive" Debian, it booted fine.

abrasive?

Some logs from the Debian's bootlog:

CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177

CPU: VIVT data cache, VIVT instruction cache Machine: WMT

I've tried various types of U-boot configurations to no avail. A few questions:

1. are there any patches/custom modules/modifications to kernel for the WMT

WM8505 7 inch EasyPC?

No, I never had this machine. If I had a few, I won't mind doing in-depth analysis of the hardware though (but if there's anyone else who would like to do this, I'd pass on it ;-) ).

2. what (if any) arcNumber do I have to pass to U-boot for the mainline

kernel to boot?

Did you compile the mainline linux kernel for correct machine ? Don't forget this is ARM, the platform setup is pretty much fixed. That's mostly why you pass machine ID.

3. how do I get the booting process to show on my screen (I mean pre-linux

kernel, just the u-boot messages), cause now the screen stays black and I can't debug the errors

Well u-boot should have serial console working. Later, you can enable early console debug support (somewhere under kernel debuging).

Well, if you could help me with just one of the above, I'd be really grateful :-) Well, hope to hear (read) from you soon Thanks Maciek

You're welcome.

Cheers!