Firmware kbl_dme_ver1.bin?

I'm trying to help someone who's trying to use X on NetBSD 9.1.  It's
failing (of course, or I wouldn't be writing!), and the guy working on
it came to me for help.  This is far enough outside my knowledge that
I'm wondering if perhaps some kind soul on the list would in turn be
willing to give me a hand with it.

It's failing to start the server.  What I have is a snapshot of the
display when it wedges trying to, apparently, start the X server.  The
first thing I noticed is that it looks as though it's still running the
hardware in text mode, rather than the usual 9.1 text-via-graphics
mode.  Here's a ten-finger copy of what I see displayed.  (I've
manually undone wrapping of lines long enough to wrap.)

[   3.8541541] kern info [drm] failed to find VBIOS tables
[   3.8551116] i915drmkms0: interrupting at ioapic 0 pin 16 (i915drmkms0)
[   3.8581088] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/i915/i915_drv.c:636)i915_firmware_load_error_print] *ERROR* failed to load firmware i915/kbl_dmc_ver1.bin (0)
[   3.8581088] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/i915/i915_drv.c:661)i915_firmware_load_error_print] *ERROR* The driver is built-in, so to load the firmware you need to
[   3.8581088] include it either in the kernel (see CONFIG_EXTRA_FIRMWARE) or
[   3.8581088] in your initrd/initramfs image.
[   3.8936088] kern info [drm] failed to retrieve link info, disabling eDP
[   3.8946299] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/io915/intel_guc_loader.c:560)guc_fw_fetcH] *ERROR* Failed to fetch GuC firmware fromk i915/kbl_guc_ver9_14.bin (error -2)
[   3.8987335] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/i915/i915_gem.c:5417)i915_gem_init_hw] *ERROR* Failed to initialize GuC, error -5 (ignored)
[   3.8998627] i915drmkms0: info: No connectors reported connected with modes
[   3.8998627] kern info: [drm] Cannot find any crtc or sizes - going 1024x768
[   3.9008587] intelfb0 at i915drmkms0
[   3.9022339] wsdisplay1 at intelfb0 kbdmux 1

At this point there is a little application-specific blather from
userland (distinguishable because the kernel output is cyan and the
userland output is white), into the middle of which is interjected

[   4.8992338] kern info: [drm] RC6 on

and I am told it's been stuck there for multiple days.

Based on the userland output, I suspect it's wedged trying to start the
X server, but I don't know why it's wedging rather than failing.

I don't know enough about the 9.1 kernel support to really understand
this (for example, the line aboiut VBIOS tables is cryptic to me).  It
also appears to think this is Linux, blathering about initrd/initramfs
(which, actually, would explain the horrible formatting - that looks
very Linuxy to me - and the negative errors; I doubt it's complaining
about EJUSTRETURN and EDUPFD, but ENOENT and EIO would actually make
some amount of sense).

Is this just a case of "hardware not yet supported", or is it more
"you need this restricted-license binary firmware blob", or
"something's broken, you should have $FOO in /some/path/$BAR", or "that
code slipped through the convert-Linux-to-NetBSD net when it was
checked in", or what?

I would tend to assume that everything after the failure to load
firmware is expected in view of that failure, but, as I said, I don't
know this code enough to be confident of that.

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