8.0_RC1 Raspberry Pi 2 doesn't occupy full HDMI screen

[Mayuresh <mayuresh%acm.org@localhost>]

This is with 8.0_RC1, specifically:

NetBSD pi 8.0_RC1 NetBSD 8.0_RC1 (RPI2) #0: Sun Jun 17 16:30:05 IST 2018 root@pi:/usr/src/sys/arch/evbarm/compile/RPI2 evbarm earmv7hf Cortex-A7 r0p5 (Cortex V7A core) NetBSD

The full HDMI screen is not occupied by the bootup messages, leaving a
black patch of about an inch open on all 4 sides. The behavior continues
with X11.

Only difference is, the screen looks garbled, with characters taking time
to "settle" on the screen. But with X11, the screen the garbling issue is
not present.

This is with base X11.

Attaching xrandr output for reference:

xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080
default connected 1920x1080+0+0 0mm x 0mm
   1920x1080      0.00* 


Attaching relevant portion of xdpyinfo below:

screen #0:
  dimensions:    1920x1080 pixels (508x286 millimeters)
  resolution:    96x96 dots per inch
  depths (7):    24, 1, 4, 8, 15, 16, 32
  root window id:    0x16d
  depth of root window:    24 planes
  number of colormaps:    minimum 1, maximum 1
  default colormap:    0x20
  default number of colormap cells:    256
  preallocated pixels:    black 0, white 16711422
  options:    backing-store WHEN MAPPED, save-unders NO
  largest cursor:    1920x1080
  current input event mask:    0xda0000
    StructureNotifyMask      SubstructureNotifyMask
SubstructureRedirectMask 
    PropertyChangeMask       ColormapChangeMask       
  number of visuals:    120
  default visual id:  0x21
  visual:
    visual id:    0x21
    class:    TrueColor
    depth:    24 planes
    available colormap entries:    256 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits


Please help.

Mayuresh