Documentation/fb/gxfb.txt

   1 [This file is cloned from VesaFB/aty128fb]
   2
   3 What is gxfb?
   4 =================
   5
   6 This is a graphics framebuffer driver for AMD Geode GX2 based processors.
   7
   8 Advantages:
   9
  10  * No need to use AMD's VSA code (or other VESA emulation layer) in the
  11    BIOS.
  12  * It provides a nice large console (128 cols + 48 lines with 1024x768)
  13    without using tiny, unreadable fonts.
  14  * You can run XF68_FBDev on top of /dev/fb0
  15  * Most important: boot logo :-)
  16
  17 Disadvantages:
  18
  19  * graphic mode is slower than text mode...
  20
  21
  22 How to use it?
  23 ==============
  24
  25 Switching modes is done using  gxfb.mode_option=<resolution>... boot
  26 parameter or using `fbset' program.
  27
  28 See Documentation/fb/modedb.txt for more information on modedb
  29 resolutions.
  30
  31
  32 X11
  33 ===
  34
  35 XF68_FBDev should generally work fine, but it is non-accelerated.
  36
  37
  38 Configuration
  39 =============
  40
  41 You can pass kernel command line options to gxfb with gxfb.<option>.
  42 For example, gxfb.mode_option=800x600@75.
  43 Accepted options:
  44
  45 mode_option     - specify the video mode.  Of the form
  46                   <x>x<y>[-<bpp>][@<refresh>]
  47 vram            - size of video ram (normally auto-detected)
  48 vt_switch       - enable vt switching during suspend/resume.  The vt
  49                   switch is slow, but harmless.
  50
  51 --
  52 Andres Salomon <dilinger@debian.org>