1 ============= 1 =============
2 What is gxfb? 2 What is gxfb?
3 ============= 3 =============
4 4
5 .. [This file is cloned from VesaFB/aty128fb] 5 .. [This file is cloned from VesaFB/aty128fb]
6 6
7 This is a graphics framebuffer driver for AMD 7 This is a graphics framebuffer driver for AMD Geode GX2 based processors.
8 8
9 Advantages: 9 Advantages:
10 10
11 * No need to use AMD's VSA code (or other VES 11 * No need to use AMD's VSA code (or other VESA emulation layer) in the
12 BIOS. 12 BIOS.
13 * It provides a nice large console (128 cols 13 * It provides a nice large console (128 cols + 48 lines with 1024x768)
14 without using tiny, unreadable fonts. 14 without using tiny, unreadable fonts.
15 * You can run XF68_FBDev on top of /dev/fb0 15 * You can run XF68_FBDev on top of /dev/fb0
16 * Most important: boot logo :-) 16 * Most important: boot logo :-)
17 17
18 Disadvantages: 18 Disadvantages:
19 19
20 * graphic mode is slower than text mode... 20 * graphic mode is slower than text mode...
21 21
22 22
23 How to use it? 23 How to use it?
24 ============== 24 ==============
25 25
26 Switching modes is done using gxfb.mode_optio 26 Switching modes is done using gxfb.mode_option=<resolution>... boot
27 parameter or using `fbset` program. 27 parameter or using `fbset` program.
28 28
29 See Documentation/fb/modedb.rst for more infor 29 See Documentation/fb/modedb.rst for more information on modedb
30 resolutions. 30 resolutions.
31 31
32 32
33 X11 33 X11
34 === 34 ===
35 35
36 XF68_FBDev should generally work fine, but it 36 XF68_FBDev should generally work fine, but it is non-accelerated.
37 37
38 38
39 Configuration 39 Configuration
40 ============= 40 =============
41 41
42 You can pass kernel command line options to gx 42 You can pass kernel command line options to gxfb with gxfb.<option>.
43 For example, gxfb.mode_option=800x600@75. 43 For example, gxfb.mode_option=800x600@75.
44 Accepted options: 44 Accepted options:
45 45
46 ================ ============================= 46 ================ ==================================================
47 mode_option specify the video mode. Of t 47 mode_option specify the video mode. Of the form
48 <x>x<y>[-<bpp>][@<refresh>] 48 <x>x<y>[-<bpp>][@<refresh>]
49 vram size of video ram (normally a 49 vram size of video ram (normally auto-detected)
50 vt_switch enable vt switching during su 50 vt_switch enable vt switching during suspend/resume. The vt
51 switch is slow, but harmless. 51 switch is slow, but harmless.
52 ================ ============================= 52 ================ ==================================================
53 53
54 Andres Salomon <dilinger@debian.org> 54 Andres Salomon <dilinger@debian.org>
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