projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| ab42b818 | 1 | ============= |
| fa20c8a6 | 2 | What is gxfb? |
| ab42b818 MCC |
3 | ============= |
| 4 | ||
| 5 | .. [This file is cloned from VesaFB/aty128fb] | |
| fa20c8a6 AS |
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 | |
| ab42b818 | 27 | parameter or using `fbset` program. |
| fa20c8a6 | 28 | |
| ab42b818 | 29 | See Documentation/fb/modedb.rst for more information on modedb |
| fa20c8a6 AS |
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 | ||
| ab42b818 MCC |
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 | ================ ================================================== | |
| fa20c8a6 | 53 | |
| fa20c8a6 | 54 | Andres Salomon <dilinger@debian.org> |