[Buildroot] Patch: new board Socrates Cyclone 5

[Jan Viktorin <viktorin@rehivetech.com>]

On Tue, 1 Aug 2017 12:02:48 +0200
Lionel Flandrin <lionel@svkt.org> wrote:

> On Tue, Aug 01, 2017 at 10:53:03AM +0200, Thomas Petazzoni wrote:
> > Hello,
> > 
> > On Tue, 1 Aug 2017 09:54:56 +0200, Lionel Flandrin wrote:
> >   
> > > Can I access this preloader.bin somewhere? I could check if there's
> > > anything obviously special about it.  
> > 
> > The preloader.bin is part of the patch that Micha? sent:
> > 
> >   https://patchwork.ozlabs.org/patch/795350/  
> 
> Ah, I missed that, thank you for pointing it out.
> 
> It's definitely a mkpimage file. A simple way to validate that is to
> check offset 0x40:
> 
> @0x40: [41 53 30 31]     Magic ("AS01")
> @0x44: [00]              Version (v0 for Cyclone V)
> @0x45: [00]              Flags
> @0x46: [48 25]           Program length in words, so 38176B
> @0x48: [00 00]           Not used ("spare")
> @0x4a: [62 01]           Header checksum
> 
> Then at the end of the file you have a 4 byte CRC which I haven't
> bothered to validate.
> 
> So nothing out of the ordinary as far as I can tell. In particular I
> can't see anything ressembling a cryptographic signature at the
> beginning or end of the file. Looks like a regular u-boot SPL to me.
> 
> I can't really say more about it, I don't have a Cyclone V board at
> the moment. My advice would be to validate that the SPL generated by

Hi, I've got a Socrates Cyclone V available and so I am able to test.
If there are any patches to test, I can probably help.

Regards
Jan

[...]

> 
> > And the very reason why I opened up this thread is because it's not
> > great to have pre-built bootloader images in the Buildroot tree.  
> 
> I agree completely.
> 
> > Best regards,
> > 
> > Thomas  
> 



-- 
   Jan Viktorin                  E-mail: Viktorin at RehiveTech.com
   System Architect              Web:    www.RehiveTech.com
   RehiveTech
   Brno, Czech Republic