buodroot linux4sam

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Moderator: nferre

cali90
Posts: 8
Joined: Tue Mar 03, 2015 10:54 am

buodroot linux4sam

Tue Dec 13, 2016 10:20 am

Hi,
I have a general question,
For my project I need to uograde a system (adding new functionality)
my board is based on on AT91Sam9g20ek .
on linux4sam I found a binary build
"linux4sam-buildroot--t91sam9g20ek_linux4sam_4.2.zip"
incluing
AT91Bootstrap
U-Boot
Linux Kernel
BuildRoot
to begin, I would like using this base for customized my board.

But after git install at91-buiuldroot I don't find at91sam9g20ek_defconf in config file.

question : In linux4sam where can I find bellow information:
- buildroot branch using for this demo ?
- and configuration file using for customized your demo version.
Thank you for your help !!!

Olive
nferre
Site Admin
Posts: 167
Joined: Wed Feb 14, 2007 11:17 am

Re: buodroot linux4sam

Tue Dec 13, 2016 12:31 pm

In latest buildroot, I see:
configs/at91sam9g20dfc_defconfig

This is the configuration to start with.

Note that any at91sam9* defconfig will do the trick just as well for the rootfs part.
cali90
Posts: 8
Joined: Tue Mar 03, 2015 10:54 am

Re: buodroot linux4sam

Tue Dec 13, 2016 10:14 pm

Thank you nferre for your feedback,

i check with this defconf ...

Do you think there needs a customization of configuration to build a basic image for the at91samg20ek ?

This point is not clear for me !!

After test I think than I don't have a good parameter for u-boot
see after a print screen of boot sequence.

Code: Select all

U-Boot 2015.01-linux4sam_4.7-rc2 (Dec 13 2016 - 17:41:06)

CPU: AT91SAM9G20
Crystal frequency:   18.432 MHz
CPU clock        :  396.288 MHz
Master clock     :  132.096 MHz
DRAM:  64 MiB
WARNING: Caches not enabled
NAND:  256 MiB
In:    serial
Out:   serial
Err:   serial
Net:   macb0
Error: macb0 address not set.

Hit any key to stop autoboot:  0 

NAND read: device 0 offset 0x200000, size 0x3496e0
 3446496 bytes read: OK
Kernel image @ 0x22000000 [ 0x000000 - 0x3496e0 ]

Starting kernel ...
Thank you

Olive

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