Booting Linux on Altera's socfpga

[Andrey Smirnov]

>> 2. Boot into barebox
>>
>> 3. cp /boot/soc_system.rbf /dev/socfpga-fpga (This step initially
>> didn't work for me, so I had to make a change to the firmware driver
>> http://lists.infradead.org/pipermail/barebox/2015-April/023194.html)
>>
>
> This is interesting, because all rbf's I generated myself worked fine.
> I wonder why this is different...
>

My guess is that all of the .rbfs you generated had their length be
multiple of 4


>> After the last step I and barebox jumps to the kernel code I don't see
>> any output on the serial at all.
>>
>
> Wild guess: does the Rocketboards kernel define "CONFIG_VMSPLIT_2G=y"?
> It is possible, that this produces errors when you use barebox.
>

You wild guess was spot on, thank you! It was indeed the reason and as
soon as I recompiled a Rocketboards kernel without that option
everything started to work just fine.


Andrey