On Thu, Jul 09, 2015 at 12:42:54PM +0300, Antony Pavlov wrote: > On Thu, 9 Jul 2015 08:49:20 +0200 > Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> wrote: > > > Hi Antony, > > > > On Wed, Jul 08, 2015 at 12:15:39PM +0300, Antony Pavlov wrote: > > > This patch realizes very simple framebuffer console for barebox. > > > Minimal ANSI/VT100 Escape Sequence parser is used to ignore color > > > change commands (based on GNU screen parser). > > > > > > THere are several ANSI/VT100 parsers: > > > > > > * GNU screen (git://git.savannah.gnu.org/screen.git); > > > * st - simple terminal (http://git.suckless.org/st); > > > * or even mutt (https://github.com/karelzak/mutt-kz). > > > > There's even one in barebox in drivers/serial/efi-stdio.c > > > > > > > > fbconsole mini-HOWTO > > > ==================== > > > > > > 1. compile sandbox barebox with > > > > > > CONFIG_VIDEO=y > > > CONFIG_FBCONSOLE=y > > > CONFIG_DRIVER_VIDEO_SDL=y > > > > > > 2. run barebox > > > > > > 3. test fbconsole > > > > > > fbconsole0.active=o > > > > I gave it a try on real hardware. Works nice. > > > > > > > > TODO: > > > > > > * no visible cursor; > > > > I couldn't resist and did some hacking on this. The cursor is visible > > now. Also I implemented more control characters and color support. I'll > > send an update patch shortly. > > > > > * FIXME: /dev/fb0 is hardcoded; > > > * FIXME: drop blanckchar() dirty hack; > > > * Sascha Hauer: character set should be prerendered for the actual framebuffer format > > > before printing a string. > > > > Did I mention that ealier? I don't know if that's a good idea since with > > color support we would need quite some memory and I'm not sure if that > > would really speed up things. > > > > I'd really love to have framebuffer console in barebox. I wasn't aware > > that this would be relatively straight forward to implement though. I'm > > willing to help working on this job so that we finally have a fbcon. > > > > Maybe one first step is to simply merge the font so that the patches > > get smaller. > > IMHO it is very reasonable to add simple tools and instruction for > font modifing. We even can add several fonts and select one of them > via Kconfig options as linux kernel does. There are some reasons > for that: > > * some people prefere another fonts (e.g. Terminus); > * in Russia we need a font with cyrillic letters. Ok. I'm happy to add this later, but if you want to add this from the start, fine aswell. > > Also I prefere fix original font header file. > Here is an example. > > 1. original font header file fragment: > > + /* 65 0x41 */ > + 0x00, /* 00000000 */ > + 0x00, /* 00000000 */ > + 0x10, /* 00010000 */ > + 0x38, /* 00111000 */ > + 0x6c, /* 01101100 */ > + 0xc6, /* 11000110 */ > + 0xc6, /* 11000110 */ > + 0xfe, /* 11111110 */ > + 0xc6, /* 11000110 */ > + 0xc6, /* 11000110 */ > + 0xc6, /* 11000110 */ > + 0xc6, /* 11000110 */ > + 0x00, /* 00000000 */ > + 0x00, /* 00000000 */ > + 0x00, /* 00000000 */ > + 0x00, /* 00000000 */ > + > > 2. my version > + /* 65 0x41 'A' */ > + 0x00, /* ........ */ > + 0x00, /* ........ */ > + 0x10, /* ...#.... */ > + 0x38, /* ..###... */ > + 0x6c, /* .##.##.. */ > + 0xc6, /* ##...##. */ > + 0xc6, /* ##...##. */ > + 0xfe, /* #######. */ > + 0xc6, /* ##...##. */ > + 0xc6, /* ##...##. */ > + 0xc6, /* ##...##. */ > + 0xc6, /* ##...##. */ > + 0x00, /* ........ */ > + 0x00, /* ........ */ > + 0x00, /* ........ */ > + 0x00, /* ........ */ Yeah, that's much better to read. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
