Re: STX7105(NEXTVOD) not booting

[Rui-Xiang Guo <rxg%lavabit.com@localhost>]

> NEXTVOD config says at the very top it's work in progress and not even
> expected to compile :)

Yes, I saw the comments and expected to get at least the kernel panic. :)

> Seriously so, I did spent some time on NEXTVOD during the early months
> of lockdown but didn't get too far.  NEXTVOD runs in the new "space
> enhanced" 32-bit mode by default, using PMB, but NetBSD sh3 ports only
> do 29-bit mode (fixed mappings for P0 &c).
> 
> Writing a new pmap that uses 32-bit physical space requires time and
> effort.  We don't have many people using (not to mention working on)
> sh3, given how the hardware is a bit exotic and not easy to come by.
> 
> A palliative solution would be to use a verion of firmware that
> doesn't switch to the 32-bit SE mode (limiting physical memory to
> 512MB) or to do the mode switch song and dance early in the kernel (I
> don't remember if NetBSD ever wants anything from the firmware once it
> booted).  At least the device drivers can be worked on in that setup.

Indeed, the customized u-boot uses 32-bit mode:
Board: STx7105-PDK  [32-bit mode]

Which path to the destination is shorter?

-rxg