Re: wscons kernel?

[mlelstv%serpens.de@localhost (Michael van Elst)]

john%ziaspace.com@localhost (John Klos) writes:

>I'm getting an MMU panic when trying to boot a wscons kernel on an Amiga 
>1200, both with current and netbsd-7. Also, it's not clear which parts are 
>necessary for wscons. grfcc0, grf0, but not ite0? pseudo-devices view, 
>wsfont, wsmux? WSDISPLAY_COMPAT_USL?

Well, there is the WSCONS config file.

wscons doesn't need any of the grfxxN, grfN, iteN drivers. But you need
to include one of the grfN drivers to pull in some console functions
(grfcnprobe/grfcninit). This should be fixed.

view is the real driver behind grfcc0 which is just a shim providing
the grf interface. It's not needed either.


wscons consists of wskbd, wsmouse, wsdisplay, wsfont and wsmux

  wskbd0          at kbd0 console ?
  wsmouse*        at ms?
  wsdisplay0      at amidisplaycc0 console ?
  pseudo-device   wsfont                  # wsfont(4) dynamic font loading support
  pseudo-device   wsmux                   # mouse & keyboard multiplexor

Which means you also need the lower level drivers kbd, ms and amidisplaycc.

  kbd0            at mainbus0             # Amiga keyboard
  ms*             at mainbus0             # Amiga mice
  amidisplaycc0   at mainbus0             # wscons interface to custom chips

you can also attach wscons to USB keyboards and mice

  wskbd*          at ukbd? console ?
  wsmouse*        at ums?

Instead of attaching wsdisplay0 to amidisplaycc0 directly you can also attach
to any driver providing the wsemuldisplaydev interface, but that makes it
ambigous what is used for console.

  wsdisplay*      at wsemuldisplaydev? console ?

WSCONS therefore declares wsdisplay0 to be used for the console.

  wsdisplay0      at wsemuldisplaydev? console 1
  wsdisplay*      at wsemuldisplaydev? console ?

Apparently you can attach wsdisplay to other devices too. WSCONS loads the
voodoofb driver (requires PCI hardware) which offers the wsemuldisplaydev interface.

wscons has lots of pretty generic options unrelated to Amiga.

There are 3 terminal emulations in wscons:  dumb, sun and vt100. We chose vt100:

  options         WSEMUL_VT100                    # VT100 emulation

And we include builtin fonts for VT220 emulation:

  options         FONT_VT220L8x10
  options         FONT_VT220ISO8x16

We also include compatibility to the USL protocol that lets an X server take
over a virtual terminal.

  options         WSDISPLAY_COMPAT_USL            # wsconscfg VT handling

wscons has other build options, for example

  options         WSDISPLAY_SCROLLSUPPORT         # console scrolling support
  options         WS_KERNEL_FG=WSCOL_BLUE         # Kernel messages printed in blue


-- 
-- 
                                Michael van Elst
Internet: mlelstv%serpens.de@localhost
                                "A potential Snark may lurk in every tree."