1ab42b818SMauro Carvalho Chehab============= 2ab42b818SMauro Carvalho ChehabWhat is gxfb? 3ab42b818SMauro Carvalho Chehab============= 4ab42b818SMauro Carvalho Chehab 5ab42b818SMauro Carvalho Chehab.. [This file is cloned from VesaFB/aty128fb] 6ab42b818SMauro Carvalho Chehab 7ab42b818SMauro Carvalho ChehabThis is a graphics framebuffer driver for AMD Geode GX2 based processors. 8ab42b818SMauro Carvalho Chehab 9ab42b818SMauro Carvalho ChehabAdvantages: 10ab42b818SMauro Carvalho Chehab 11ab42b818SMauro Carvalho Chehab * No need to use AMD's VSA code (or other VESA emulation layer) in the 12ab42b818SMauro Carvalho Chehab BIOS. 13ab42b818SMauro Carvalho Chehab * It provides a nice large console (128 cols + 48 lines with 1024x768) 14ab42b818SMauro Carvalho Chehab without using tiny, unreadable fonts. 15ab42b818SMauro Carvalho Chehab * You can run XF68_FBDev on top of /dev/fb0 16ab42b818SMauro Carvalho Chehab * Most important: boot logo :-) 17ab42b818SMauro Carvalho Chehab 18ab42b818SMauro Carvalho ChehabDisadvantages: 19ab42b818SMauro Carvalho Chehab 20ab42b818SMauro Carvalho Chehab * graphic mode is slower than text mode... 21ab42b818SMauro Carvalho Chehab 22ab42b818SMauro Carvalho Chehab 23ab42b818SMauro Carvalho ChehabHow to use it? 24ab42b818SMauro Carvalho Chehab============== 25ab42b818SMauro Carvalho Chehab 26ab42b818SMauro Carvalho ChehabSwitching modes is done using gxfb.mode_option=<resolution>... boot 27ab42b818SMauro Carvalho Chehabparameter or using `fbset` program. 28ab42b818SMauro Carvalho Chehab 29ab42b818SMauro Carvalho ChehabSee Documentation/fb/modedb.rst for more information on modedb 30ab42b818SMauro Carvalho Chehabresolutions. 31ab42b818SMauro Carvalho Chehab 32ab42b818SMauro Carvalho Chehab 33ab42b818SMauro Carvalho ChehabX11 34ab42b818SMauro Carvalho Chehab=== 35ab42b818SMauro Carvalho Chehab 36ab42b818SMauro Carvalho ChehabXF68_FBDev should generally work fine, but it is non-accelerated. 37ab42b818SMauro Carvalho Chehab 38ab42b818SMauro Carvalho Chehab 39ab42b818SMauro Carvalho ChehabConfiguration 40ab42b818SMauro Carvalho Chehab============= 41ab42b818SMauro Carvalho Chehab 42ab42b818SMauro Carvalho ChehabYou can pass kernel command line options to gxfb with gxfb.<option>. 43ab42b818SMauro Carvalho ChehabFor example, gxfb.mode_option=800x600@75. 44ab42b818SMauro Carvalho ChehabAccepted options: 45ab42b818SMauro Carvalho Chehab 46ab42b818SMauro Carvalho Chehab================ ================================================== 47ab42b818SMauro Carvalho Chehabmode_option specify the video mode. Of the form 48ab42b818SMauro Carvalho Chehab <x>x<y>[-<bpp>][@<refresh>] 49ab42b818SMauro Carvalho Chehabvram size of video ram (normally auto-detected) 50ab42b818SMauro Carvalho Chehabvt_switch enable vt switching during suspend/resume. The vt 51ab42b818SMauro Carvalho Chehab switch is slow, but harmless. 52ab42b818SMauro Carvalho Chehab================ ================================================== 53ab42b818SMauro Carvalho Chehab 54ab42b818SMauro Carvalho ChehabAndres Salomon <dilinger@debian.org> 55