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Google Link: Add remaining code to support native graphics

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The Link native graphics commit 49428d84 [1]

    Add support for Google's Chromebook Pixel

was missing some of the higher level bits, and hence could not be
used.  This is not new code -- it has been working since last
August -- so the effort now is to get it into the tree and structure
it in a way compatible with upstream coreboot.

1. Add options to src/device/Kconfig to enable native graphics.
2. Export the MTRR function for setting variable MTRRs.
3. Clean up some of the comments and white space.

While I realize that the product name is Pixel, the mainboard in the
coreboot tree is called Link, and that name is what we will use
in our commits.

[1] http://review.coreboot.org/2482

Change-Id: Ie4db21f245cf5062fe3a8ee913d05dd79030e3e8
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/2531
Tested-by: build bot (Jenkins)
This commit is contained in:
Ronald G. Minnich
2013-02-26 10:07:40 -08:00
parent 26855fc70b
commit 69efaa0388
5 changed files with 73 additions and 17 deletions
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32
src/device/Kconfig
View File

@@ -19,12 +19,29 @@
##
menu "Devices"
# Only set this in the mainboard
config MAINBOARD_HAS_NATIVE_VGA_INIT
bool
default n
config MAINBOARD_DO_NATIVE_VGA_INIT
bool "Use native graphics initialization"
depends on MAINBOARD_HAS_NATIVE_VGA_INIT
default n
help
Some mainboards, such as the Google Link, allow initializing the display
without the need of a binary only VGA OPROM. Enabling this option may be
faster, but also lack flexibility in setting modes.
If unsure, say N.
# TODO: Explain differences (if any) for onboard cards.
config VGA_ROM_RUN
bool "Run VGA Option ROMs"
default n if PAYLOAD_SEABIOS
default y if !PAYLOAD_SEABIOS
depends on PCI && !PAYLOAD_SEABIOS || EXPERT
depends on PCI && !PAYLOAD_SEABIOS && !MAINBOARD_DO_NATIVE_VGA_INIT || EXPERT
help
Execute VGA Option ROMs in coreboot if found. This is required
to enable PCI/AGP/PCI-E video cards when not using a SeaBIOS
@@ -282,19 +299,19 @@ config MBI_FILE
endmenu
menu "Display"
depends on PCI_OPTION_ROM_RUN_YABEL || PCI_OPTION_ROM_RUN_REALMODE
depends on PCI_OPTION_ROM_RUN_YABEL || PCI_OPTION_ROM_RUN_REALMODE || MAINBOARD_DO_NATIVE_VGA_INIT
config FRAMEBUFFER_SET_VESA_MODE
prompt "Set VESA framebuffer mode"
prompt "Set framebuffer graphics resolution"
bool
depends on PCI_OPTION_ROM_RUN_YABEL || PCI_OPTION_ROM_RUN_REALMODE
help
Set VESA framebuffer mode (needed for bootsplash)
Set VESA/native framebuffer mode (needed for bootsplash and graphical framebuffer console)
choice
prompt "VESA framebuffer video mode"
prompt "framebuffer graphics resolution"
default FRAMEBUFFER_VESA_MODE_117
depends on FRAMEBUFFER_SET_VESA_MODE
depends on FRAMEBUFFER_SET_VESA_MODE || MAINBOARD_DO_NATIVE_VGA_INIT
help
This option sets the resolution used for the coreboot framebuffer (and
bootsplash screen).
@@ -385,6 +402,7 @@ config FRAMEBUFFER_VESA_MODE_11B
config FRAMEBUFFER_VESA_MODE_USER
bool "Manually select VESA mode"
depends on !MAINBOARD_DO_NATIVE_VGA_INIT
endchoice
@@ -425,7 +443,7 @@ config FRAMEBUFFER_VESA_MODE
config FRAMEBUFFER_KEEP_VESA_MODE
prompt "Keep VESA framebuffer"
bool
depends on PCI_OPTION_ROM_RUN_YABEL || PCI_OPTION_ROM_RUN_REALMODE
depends on PCI_OPTION_ROM_RUN_YABEL || PCI_OPTION_ROM_RUN_REALMODE || !MAINBOARD_DO_NATIVE_VGA_INIT
help
This option keeps the framebuffer mode set after coreboot finishes
execution. If this option is enabled, coreboot will pass a