Documentation/fb/fbcon.rst

16 etc. Theoretically, multi-colored fonts, blending, aliasing, and any feature
23 configuration tool.  It is under Device Drivers->Graphics Support->
24 Console display driver support->Framebuffer Console Support.
31 always be available. However, using a chipset-specific driver will give you
36 support->Bootup logo.
38 Also, you will need to select at least one compiled-in font, but if
84 	compiled-in fonts: 10x18, 6x10, 6x8, 7x14, Acorn8x8, MINI4x6,
112 3. fbcon=vc:<n1>-<n2>
128 	    - 0 - normal orientation (0 degree)
129 	    - 1 - clockwise orientation (90 degrees)
130 	    - 2 - upside down orientation (180 degrees)
131 	    - 3 - counterclockwise orientation (270 degrees)
137 		- rotate     - rotate the display of the active console
138 		- rotate_all - rotate the display of all consoles
162 7. fbcon=logo-pos:<location>
165 	given, the bootup logo is moved from the default top-left corner
170 8. fbcon=logo-count:<n>
173 	logo, and -1 gives the default which is the number of online CPUs.
180 The console layer, as with most subsystems, needs a driver that interfaces with
183 	console ---> VGA driver ---> hardware.
188 Documentation/driver-api/console.rst for more information).
193 	console ---> fbcon ---> fbdev drivers ---> hardware
205 Documentation/driver-api/console.rst. To summarize:
210   echo 1 > /sys/class/vtconsole/vtcon1/bind - attach framebuffer console to
212   echo 0 > /sys/class/vtconsole/vtcon1/bind - detach framebuffer console from
318     if test -x /sys/class/vtconsole/vtcon$i; then
319 	if [ `cat /sys/class/vtconsole/vtcon$i/name | grep -c "frame buffer"` \
321 	    if test -x $VBETOOL/vbetool; then
330 ---------------------------------------------------------------------------
339     if test -x /sys/class/vtconsole/vtcon$i; then
340 	if [ `cat /sys/class/vtconsole/vtcon$i/name | grep -c "frame buffer"` \