Daniel Golle b091137d79 x86: 64, generic: replace fbdev with simpledrm ...

efifb, the simple-framebuffer fbdev driver, hyperv_fb and xen-fbfront
carry the display on these two subtargets, with fbcon and DRM fbdev
emulation on top. A DRM driver can claim the firmware framebuffer on its
own, so the legacy hardware drivers only add size to every image.

Mark the firmware framebuffer as a generic system framebuffer so sysfb
registers it as simple-framebuffer for simpledrm, and enable hyperv_drm
for Hyper-V guests as its help text asks. DRM fbdev emulation and fbcon
stay, so the boot log and the console prompt still reach the screen; the
emulation serves fbcon, as generic leaves FB_DEVICE off and no /dev/fb
node appears. VGA_CONSOLE and VT stay as well: a BIOS boot through GRUB
pc leaves the machine in VGA text mode, where the firmware offers no
framebuffer for simpledrm to drive, so vgacon is the only console there.
A Xen PV or PVH guest has neither, and keeps its console on hvc0. The
shared x86 config and the legacy and geode subtargets are untouched.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

2026-10-06 18:35:40 +01:00

..

base-files/lib/preinit

…

config-6.18

x86: 64, generic: replace fbdev with simpledrm

2026-10-06 18:35:40 +01:00

target.mk

treewide: drop the audio and display target features

2026-09-29 15:29:43 +01:00