[U-Boot] do i have any chance of booting a vxworks 5.5.2 image with u-boot?

[Robert P. J. Day <rpjday@crashcourse.ca>]

Quoting Tom Rini <trini@konsulko.com>:

> On Mon, Feb 01, 2016 at 05:20:16PM -0500, Robert P. J. Day wrote:
>
>>   i know u-boot has a "bootvx" command for booting vxworks images,
>> but from what i read here:
>>
>> http://stackoverflow.com/questions/24114948/vxworks-portingdm8168
>>
>> it's only vxworks 7 that supports u-boot as its bootloader. i know
>> precious little about vxworks, i was just handed a version 5.5.2
>> image and asked whether it was possible for u-boot to boot it.
>>
>>   do i have any chance whatsoever? any guidance would be useful.
>
> Well, I think there's two parts to this answer.  The first is that (on
> PowerPC), VxWorks has been supported for practically forever.  The
> second is that as the answers there say, you may have to deal with and
> fix some disagreements about what software (U-Boot or VxWorks) did or
> did not do what initalization.  You may also, frankly, want to start out
> with a U-Boot of that vintage, see if that works, and if so (and it'd be
> great to see results and patches if needed) if things still work in
> mainline today.

   i'm certainly willing to put in the time to do this -- i have the
hardware and the appropriate build environment so give me a day or two
to finish something, and i can pretty much concentrate on this and
submit any patches that eventually get this to work.

rday