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1=============2What is gxfb?3=============4 5.. [This file is cloned from VesaFB/aty128fb]6 7This is a graphics framebuffer driver for AMD Geode GX2 based processors.8 9Advantages:10 11 * No need to use AMD's VSA code (or other VESA emulation layer) in the12 BIOS.13 * It provides a nice large console (128 cols + 48 lines with 1024x768)14 without using tiny, unreadable fonts.15 * You can run XF68_FBDev on top of /dev/fb016 * Most important: boot logo :-)17 18Disadvantages:19 20 * graphic mode is slower than text mode...21 22 23How to use it?24==============25 26Switching modes is done using gxfb.mode_option=<resolution>... boot27parameter or using `fbset` program.28 29See Documentation/fb/modedb.rst for more information on modedb30resolutions.31 32 33X1134===35 36XF68_FBDev should generally work fine, but it is non-accelerated.37 38 39Configuration40=============41 42You can pass kernel command line options to gxfb with gxfb.<option>.43For example, gxfb.mode_option=800x600@75.44Accepted options:45 46================ ==================================================47mode_option specify the video mode. Of the form48 <x>x<y>[-<bpp>][@<refresh>]49vram size of video ram (normally auto-detected)50vt_switch enable vt switching during suspend/resume. The vt51 switch is slow, but harmless.52================ ==================================================53 54Andres Salomon <dilinger@debian.org>55