[U-Boot-Users] 1.1.4 and 2.6 kernel

alfred hitch
2006-06-28T02:19:19Z

Hi Michael, Everyone,

Thanks for your replies.
Michael: Looks like we do have something in common. This is a very
serious observation. So, correct me if I a wrong. Did the same kernel
give you traces with redboot but not u-boot. (We are together)

Did same kernel crash later on with u-boot and not redboot ? As in I
am curious to know that did change in boot loader cause some other
issue apart from crash also ?

Hey guys, looks there is more to it than just saying linux issue.

Is someone else out there running u-boot 1.1.4 successfully with 2.6 kernel ??

What could be going wrong ??

Cheers,
Alfred

On 6/27/06, Michael Schwingen <rincewind@discworld.dascon.de> wrote:
> alfred hitch wrote:
> > Hi All,
> >
> > I am trying to get 2.6 kernel boot on a plattfor very similar to ixdp425.
> > We already have u-boot 1.1.1 and 2.4 kernel working for us. But, while
> > trying to get the 2.6 working.
> >
> > I get the Booting image at XXXX
> > XXXX
> > Starting Kernel ...
> >
> > And after that nothing.
> >
> > At this stage I am expecting the "Uncompressing Linux ......"
> >
> > What could be going wrong ? Same board, if I put in 2.4 on a 1.1.4
> > version u-boot, it boots fine.
> >
> > Is it some tty redirection issue ??
> > Only change from IXDP425 board is sdram configuration and ttyS1 for
> > console instead of ttyS0.
> > Suspecting later but then 2.4 shouldnt' have also booted up ?
> Maybe.
>
> I just ran into similar problems. Since I had trouble getting a kernel
> to boot on my custom IXP425 board, I borrowed a IXDP425 board last
> weekend and tried that.
>
> I have:
> - IXDP425 board with redboot in flash
> - a working kernel that can be booted by redboot via tftp.
>
> Replacing redboot by u-boot (pulled from git last week), the kernel is
> started, but the early output (like "uncompressing kernel") does not
> appear on any of the UART ports.
>
> When the kernel finally has the console set up, the messages appear -
> but if it panics before that point, there is no output at all.
>
> Tracing into the kernel startup using gdb + bdi2000, I found no obvious
> reason as to why this happens, but I did not have enough time to really
> dig into the problem - and since I found the reason for my hang, this
> has now moved down in priority a bit. I can boorow the IXDP425 board
> again if absolutely necessary.
>
> My guess would be that u-boot leaves the hardware in some different
> state than redboot, so that the early UART output in the linux kernel
> fails, but this is only a guess. However, since this happens only with
> u-boot and not with redboot, it does not seem to be a pure linux problem.
>
>
> As a sidenote, the SDRAM config for the IXDP425 seems wrong to me: the
> board has 256MB SDRAM, but config.h shows only 16MB?
>
> cu
> Michael
>
>
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