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+--- Thread: [FreeBSD] Kernel fonts and colors. (/Thread-FreeBSD-Kernel-fonts-and-colors)
[FreeBSD] Kernel fonts and colors. - yrmt - 16-08-2012
These changes require you to recompile your kernel.
- Change the colors, add this to your kernel configuration.
options SC_KERNEL_CONS_ATTR=(FG_LIGHTRED|BG_BLACK)
options SC_KERNEL_CONS_REV_ATTR=(FG_BLACK|BG_RED)
This will set a light red kernel foreground output and black background.
If you want to emulate NetBSD colors, use a green foreground :P
colors are from a raw palette in C. ( u_char palette[256 * 3]; (syscons.h)
- Change the kernel font, add this in your kernel configuration:
options SC_DFLT_FONT
makeoptions SC_DFLT_FONT=iso15-thin
I wanted to have a thin font for kernel messages.
It failed the first time I ran it, saying I didn't have a font.h. We'll generate the font manually.
I found the part talking about our font.h missing in the kernel source:
(/usr/src/sys/conf/files.i386)
-- change this:
font.h optional sc_dflt_font \
compile-with "uudecode < /usr/share/syscons/fonts/${SC_DFLT_FONT}-8x16.fnt && file2c 'static u_char dflt_font_16[16*256] = {' '};' < ${SC_DFLT_FONT}-8x16 > font.h && uudecode < /usr/share/syscons/fonts/${SC_DFLT_FONT}-8x14.fnt && file2c 'static u_char dflt_font_14[14*256] = {' '};' < ${SC_DFLT_FONT}-8x14 >> font.h && uudecode < /usr/share/syscons/fonts/${SC_DFLT_FONT}-8x8.fnt && file2c 'static u_char dflt_font_8[8*256] = {' '};' < ${SC_DFLT_FONT}-8x8 >> font.h" \
no-obj no-implicit-rule before-depend \
clean "font.h ${SC_DFLT_FONT}-8x14 ${SC_DFLT_FONT}-8x16 ${SC_DFLT_FONT}-8x8"
#
-- to this:
font.h optional sc_dflt_font \
compile-with "uudecode < /usr/share/syscons/fonts/${SC_DFLT_FONT}-8x16.fnt && file2c 'static u_char dflt_font_16[16*256] = {' '};' < ${SC_DFLT_FONT}-8x16 > font.h" \
no-obj no-implicit-rule before-depend \
#clean "font.h ${SC_DFLT_FONT}-8x14 ${SC_DFLT_FONT}-8x16 ${SC_DFLT_FONT}-8x8"
#
Now we must generate the font.h file with the instructions found above:
uudecode < /usr/share/syscons/fonts/iso15-thin-8x16.fnt > ~/font.h
then we convert this file to a c file:
file2c 'static u_char dflt_font_16[16*256] = {' '};' < iso15-thin-8x16 > font.h
then we can move the font.h file to /usr/src/sys/dev/syscons and compile the kernel. The font won't look as thin as normally because the framebuffer size during boot is fixed at 640x380 but it still looks much nicer.
RE: [FreeBSD] Kernel fonts and colors. - CrossFold - 16-08-2012
Thank you so much ! :D I was wondering when you would reveal the secret of your customization !
RE: [FreeBSD] Kernel fonts and colors. - yrmt - 16-08-2012
Haha no problem.
RE: [FreeBSD] Kernel fonts and colors. - ducpfp - 01-09-2012
Dear, Beastie.
Thanks for the useful info. I successfully change the color.
I'm currently having problem with font upon recompiling kernel. I got the error message as follow:
/usr/src/sys/dev/syscons/syscons.c: In function 'scinit':
/usr/src/sys/dev/syscons/syscons.c:2913: error: 'dflt_font_8' undeclared (first use in this function)
/usr/src/sys/dev/syscons/syscons.c:2913: error: (Each undeclared identifier is reported only once
/usr/src/sys/dev/syscons/syscons.c:2913: error: for each function it appears in.)
/usr/src/sys/dev/syscons/syscons.c:2914: error: 'dflt_font_14' undeclared (first use in this function)
*** Error code 1
I'm using FreeBSD 9.0p4.
Could you give me some comment on this ? Thanks.
RE: [FreeBSD] Kernel fonts and colors. - yrmt - 01-09-2012
it means, this part
file2c 'static u_char dflt_font_16[16256] = {' '};' < ${SC_DFLT_FONT}-8x16 > font.h"
didn't go well, check the font.h manually
RE: [FreeBSD] Kernel fonts and colors. - ducpfp - 02-09-2012
Thanks, I fixed the issue by commenting out these two lines from syscons.c:
bcopy(dflt_font_8, sc->font_8, sizeof(dflt_font_8));
bcopy(dflt_font_14, sc->font_14, sizeof(dflt_font_14));
RE: [FreeBSD] Kernel fonts and colors. - yrmt - 02-09-2012
Great ;) Now the thing I really want is a ramdisk with higher framebuffer size at boot.
RE: [FreeBSD] Kernel fonts and colors. - yrmt - 26-12-2012
Here's what it looks like.
http://www.youtube.com/watch?v=ekOYy5ga5n4&feature=youtu.be