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authorLuc Verhaegen <libv@skynet.be>2009-05-29 03:04:16 +0000
committerLuc Verhaegen <libv@skynet.be>2009-05-29 03:04:16 +0000
commit5c5beb765dce9e5ded2ea1332d86d288ba347dce (patch)
tree2ac82209a29b6af718caf0813b83443f1363034a /src/config
parent195f5cd66674433cf06dbfe57e0b9bd98bb3549c (diff)
Implement native VGA Support.
This code brings a rather complete set of VGA IO routines for whoever wants it. These consist of the by now familiar read/write/mask sets. Due to the crazy nature of VGA, an ancient standard with bits all over the place, it makes no sense to define individual registers. You need a vga register spec at hand if you want to do anything anyway. These IO routines are always exposed. It also provides code to natively set up a 640x400 VGA textmode with an 8x16 font. The native VGA mode code is behind the OPTION_VGA option, as the font really adds to the size of the compiled/compressed rom. The font is the one also present in the linux kernel, but this file is unlicensed. Another copy of this is also present in coreboot in the deprecated console/btext code. The vga console code has been cleaned up, but it still has some TODO's left open, but that's for when i finally have found the remaining issue with the epia-m. Right now, it is important to get parts of my work out already and to make the remainder managable again. Signed-off-by: Luc Verhaegen <libv@skynet.be> Acked-by: Peter Stuge <peter@stuge.se> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4321 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/config')
-rw-r--r--src/config/Options.lb6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/config/Options.lb b/src/config/Options.lb
index f28563a274..56cb8e2414 100644
--- a/src/config/Options.lb
+++ b/src/config/Options.lb
@@ -1077,6 +1077,12 @@ define CPU_ADDR_BITS
comment "CPU hardware address lines num, for AMD K8 could be 40, and AMD family 10 could be 48"
end
+define CONFIG_VGA
+ default 0
+ export always
+ comment "Include VGA initialisation code"
+end
+
define CONFIG_VGA_ROM_RUN
default 0
export always