porting freebsd to at91sam9g45 ( SBC6045 board)

[Aleksander Dutkowski]

Hi Oliver!

On Tue, Jan 3, 2012 at 11:48 AM, Olivier Houchard <mlfbsd at ci0.org> wrote:
> Hi Aleksander,
>
> On Tue, Jan 03, 2012 at 01:37:24AM +0100, Aleksander Dutkowski wrote:
>> hi!
>>
>> Ive just come from linux world to FreeBSD and I have SBC6045 board
>> based on at91sam9g45 SoC so Ive decided to try and port FBSD on it ;)
>> I have quite good knowledge in x86 processor internals like paging,
>> protected mode etc, but I haven't been programing low level on arm
>> arch yet.
>>
>> Somebody created port for SAM9G20EK, so I tried to compile and run it:
>>
>> cd /usr/arm // my own copy from svn
>> export TARGET=arm
>> export TARGET_ARCH=arm
>> export MAKEOBJDIRPREFIX=/usr/arm/obj
>> make buildkernel KERNCONF=SAM9G20EK
>> make installkernel KERNCONF=SAM9G20EK DESTDIR=/arm-kernel  INSTALL_NODEBUG=t
>>
>> file /arm-kernel/boot/kernel/kernel
>> kernel: ELF 32-bit LSB executable, ARM, version 1 (FreeBSD),
>> dynamically linked (uses shared libs), not stripped
>>
>> And this is output from board's debug console:
>> ----------------------------------------------------------------------------------------------
>> Start AT91Bootstrap...
>>
>> U-Boot 1.3.4 (May 15 2011 - 11:23:14)
>>
>> DRAM:  256 MB
>> ## Unknown FLASH on Bank 1 - Size = 0x00000000 = 0 MB
>> Flash:  0 kB
>> NAND:  256 MiB
>> Error: 8 bit/pixel mode, but BMP has 32 bit/pixel
>> In:    serial
>> Out:   serial
>> Err:   serial
>> Net:   macb0
>> Hit any key to stop autoboot:  0
>> U-Boot> tftp 0x20000000 fbsd
>> macb0: Starting autonegotiation...
>> macb0: Autonegotiation complete
>> macb0: link up, 100Mbps full-duplex (lpa: 0x4de1)
>> Using macb0 device
>> TFTP from server 192.168.3.1; our IP address is 192.168.3.2
>> Filename 'fbsd'.
>> Load address: 0x20000000
>> Loading: #################################################################
>>          #################################################################
>>          #################################################################
>>          ###############################################################
>> done
>> Bytes transferred = 3775383 (399b97 hex)
>> U-Boot> go 0x200000C0
>
>
> I'm not sure u-boot works that way, I think you should either use
> "bootelf 0x20000000", or load kernel.bin, instead of just kernel, and
> just "go 0x20000000".
>
> Regards,
>
> Olivier

I sent kernel.bin via tftp but the effect is the same.
Maybe I will be able to borrow J-TAG, so I could check, when it fails.

-- 
Regards,
Aleksander Dutkowski