linux-kernel - Re: [uClinux-dev] m68k compile issue with 4.0.5

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Date:	Wed, 17 Jun 2015 16:06:32 +1000
From:	Greg Ungerer <gerg@...inux.org>
To:	Waldemar Brodkorb <wbx@...nadk.org>
CC:	uClinux development list <uclinux-dev@...inux.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [uClinux-dev] m68k compile issue with 4.0.5

Hi Waldemar,

On 17/06/15 15:42, Waldemar Brodkorb wrote:
> Hi Greg,
> Greg Ungerer wrote,
>>
>> I don't have any compile (or runtime) problems with m5208evb_defconfig
>> on linux-4.0.5 either. That is close to what most people use with qemu.
>> What .config are you using?
> 
> Are you sure the defconfig creates a bootable image?

Yes, on real M5208EVB hardware. That is what I ran it on.
I didn't run it under QEMU.


> I still need at least two patches.
> 
> http://cgit.openadk.org/cgi/cgit/openadk.git/tree/target/m68k/qemu-m68k/patches/4.0.5/qemu-coldfire.patch
> Without this one I get black screen.

Better to use the fixes to QEMU instead of working around
its problems in the linux kernel sources :-)

This thread has the QEMU fixes:

https://lists.nongnu.org/archive/html/qemu-devel/2014-08/msg03224.html

I have posted them a couple of times to the QEMU dev list, but
no-one seems to pick them up.


> http://cgit.openadk.org/cgi/cgit/openadk.git/tree/target/m68k/qemu-m68k/patches/4.0.5/m68k-coldfire-fec.patch
> Without this one I get 
> qemu: hardware error: mcf_fec_read: Bad address 0x1c4
> ...
> Abort

Yes, you still need that. I haven't cleaned that up into a
state that I am totally happy with yet.


> Networking still does not work for me after booting with the two
> patches applied:
> fec fec.0 (unnamed net_device) (uninitialized): MDIO read timeout
> fec: probe of fec.0 failed with error -5
> 
> Any idea?

Hmm, no, haven't seen that one. I'll try a run with qemu and see
if I can see what is going on.

Regards
Greg



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