1 ============= 2 What is gxfb? 3 ============= 4 5 .. [This file is cloned from VesaFB/aty128fb] 6 7 This is a graphics framebuffer driver for AMD Geode GX2 based processors. 8 9 Advantages: 10 11 * No need to use AMD's VSA code (or other VESA emulation layer) in the 12 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/fb0 16 * Most important: boot logo :-) 17 18 Disadvantages: 19 20 * graphic mode is slower than text mode... 21 22 23 How to use it? 24 ============== 25 26 Switching modes is done using gxfb.mode_option=<resolution>... boot 27 parameter or using `fbset` program. 28 29 See Documentation/fb/modedb.rst for more information on modedb 30 resolutions. 31 32 33 X11 34 === 35 36 XF68_FBDev should generally work fine, but it is non-accelerated. 37 38 39 Configuration 40 ============= 41 42 You can pass kernel command line options to gxfb with gxfb.<option>. 43 For example, gxfb.mode_option=800x600@75. 44 Accepted options: 45 46 ================ ================================================== 47 mode_option specify the video mode. Of the form 48 <x>x<y>[-<bpp>][@<refresh>] 49 vram size of video ram (normally auto-detected) 50 vt_switch enable vt switching during suspend/resume. The vt 51 switch is slow, but harmless. 52 ================ ================================================== 53 54 Andres Salomon <dilinger@debian.org>
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