| [This file is cloned from VesaFB/aty128fb] |
| |
| What is gxfb? |
| ================= |
| |
| This is a graphics framebuffer driver for AMD Geode GX2 based processors. |
| |
| Advantages: |
| |
| * No need to use AMD's VSA code (or other VESA emulation layer) in the |
| BIOS. |
| * It provides a nice large console (128 cols + 48 lines with 1024x768) |
| without using tiny, unreadable fonts. |
| * You can run XF68_FBDev on top of /dev/fb0 |
| * Most important: boot logo :-) |
| |
| Disadvantages: |
| |
| * graphic mode is slower than text mode... |
| |
| |
| How to use it? |
| ============== |
| |
| Switching modes is done using gxfb.mode_option=<resolution>... boot |
| parameter or using `fbset' program. |
| |
| See Documentation/fb/modedb.txt for more information on modedb |
| resolutions. |
| |
| |
| X11 |
| === |
| |
| XF68_FBDev should generally work fine, but it is non-accelerated. |
| |
| |
| Configuration |
| ============= |
| |
| You can pass kernel command line options to gxfb with gxfb.<option>. |
| For example, gxfb.mode_option=800x600@75. |
| Accepted options: |
| |
| mode_option - specify the video mode. Of the form |
| <x>x<y>[-<bpp>][@<refresh>] |
| vram - size of video ram (normally auto-detected) |
| vt_switch - enable vt switching during suspend/resume. The vt |
| switch is slow, but harmless. |
| |
| -- |
| Andres Salomon <dilinger@debian.org> |