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Move the MARK_GRAPHICS_MEM_WRCOMB to x86 architecture

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The MARK_GRAPHICS_MEM_WRCOMB was spreading like a cancer
since it was defined in sandybridge. It is really
more of an x86 thing however, and we now have
three systems that can use it.

I considered making this more general, since it technically
can apply to PTE-based systems like ARM, and maybe we should.
But the 'WRCOMB' moniker is usually closely tied to the x86.

Change-Id: I3eb6eb2113843643348a5e18e78c53d113899ff8
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/3349
Tested-by: build bot (Jenkins)
This commit is contained in:
Ronald G. Minnich
2013-05-31 19:36:52 +02:00
parent 873965e2a7
commit a296ce75e3
3 changed files with 8 additions and 16 deletions
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8
src/arch/x86/Kconfig
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@@ -1,5 +1,13 @@
menu "Architecture (x86)"
config MARK_GRAPHICS_MEM_WRCOMB
bool "Mark graphics memory as write-combining."
default n
help
The graphics performance may increase if the graphics
memory is set as write-combining cache type. This option
enables marking the graphics memory as write-combining.
# This is an SMP option. It relates to starting up APs.
# It is usually set in mainboard/*/Kconfig.
# TODO: Improve description.