[Buildroot] Buildroot and Linux/ARM on AT91SAM9260

[Ivan Kuten]

Ryan Ordway wrote:
> I've been using Buildroot with a board based on the AT91SAM9260. I was  
> able to get a successful kernel build (2.6.21.6) and buildroot build  
> (buildroot-atmel-20070521) using gcc 4.0.4, binutils 2.17 and uClibc  
> 0.9.28.3. I've been trying to get an updated build from various  
> different versions of buildroot from buildrooot-atmel-20070607,  
> buildroot-trunk, etc. and while things build fine with some tweaking  
> none of the toolchain combinations seem to generate working binaries.  
> I've tried using EABI vs. OABI, softfloat for gcc, NWFPE vs. FastFPE,  
> etc. The only combination that I can get to work reliably are gcc  
> 4.0.4, binutils 2.17 and uClibc 0.9.28.3 with my 2.6.21.6 kernel with  
> AT91 patches for 2.6.21 applied.
> 
> Is there a magic compiler, binutils and uClibc trinity for Linux/ARM  
> in particular?
> 
> Thanks!
> 
> Ryan
> 

Indeed, I tried svn buildroot with kernel 2.6.22 for Cirrus Logic ARM board
BR2_ARM_TYPE="ARM920T"
BR2_ARM_EABI=y
BR2_SOFT_FLOAT=y
BR2_TARGET_OPTIMIZATION="-Os -pipe"
BR2_BINUTILS_VERSION_2_18=y
BR2_GCC_VERSION_4_2_1=y

rootfs was created but when booting:

/sbin/init: can't Kernel panic - not syncing: Attempted to kill init!
load library 'libgcc_s.so.1'

I checked that there is no libgcc_s.so.1 in rootfs image but I have BR2_GCC_SHARED_LIBGCC=y
May be that is a cause why you not getting working rootfs.


Regards,
Ivan
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Embedded Linux engineer,
Promwad Company: http://www.promwad.com/
Homepage : http://www.ivankuten.com/
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