cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pvr2fb.rst (2259B)

      1===============
      2What is pvr2fb?
      3===============
      4
      5This is a driver for PowerVR 2 based graphics frame buffers, such as the
      6one found in the Dreamcast.
      7
      8Advantages:
      9
     10 * It provides a nice large console (128 cols + 48 lines with 1024x768)
     11   without using tiny, unreadable fonts (NOT on the Dreamcast)
     12 * You can run XF86_FBDev on top of /dev/fb0
     13 * Most important: boot logo :-)
     14
     15Disadvantages:
     16
     17 * Driver is largely untested on non-Dreamcast systems.
     18
     19Configuration
     20=============
     21
     22You can pass kernel command line options to pvr2fb with
     23`video=pvr2fb:option1,option2:value2,option3` (multiple options should be
     24separated by comma, values are separated from options by `:`).
     25
     26Accepted options:
     27
     28==========  ==================================================================
     29font:X      default font to use. All fonts are supported, including the
     30	    SUN12x22 font which is very nice at high resolutions.
     31
     32
     33mode:X      default video mode with format [xres]x[yres]-<bpp>@<refresh rate>
     34	    The following video modes are supported:
     35	    640x640-16@60, 640x480-24@60, 640x480-32@60. The Dreamcast
     36	    defaults to 640x480-16@60. At the time of writing the
     37	    24bpp and 32bpp modes function poorly. Work to fix that is
     38	    ongoing
     39
     40	    Note: the 640x240 mode is currently broken, and should not be
     41	    used for any reason. It is only mentioned here as a reference.
     42
     43inverse     invert colors on screen (for LCD displays)
     44
     45nomtrr      disables write combining on frame buffer. This slows down driver
     46	    but there is reported minor incompatibility between GUS DMA and
     47	    XFree under high loads if write combining is enabled (sound
     48	    dropouts). MTRR is enabled by default on systems that have it
     49	    configured and that support it.
     50
     51cable:X     cable type. This can be any of the following: vga, rgb, and
     52	    composite. If none is specified, we guess.
     53
     54output:X    output type. This can be any of the following: pal, ntsc, and
     55	    vga. If none is specified, we guess.
     56==========  ==================================================================
     57
     58X11
     59===
     60
     61XF86_FBDev has been shown to work on the Dreamcast in the past - though not yet
     62on any 2.6 series kernel.
     63
     64Paul Mundt <lethal@linuxdc.org>
     65
     66Updated by Adrian McMenamin <adrian@mcmen.demon.co.uk>