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x86: Add Video BIOS Table (VBT) related Kconfig options

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This adds Kconfig options for Video BIOS Table which is normally
required if you are using an Intel FSP firmware that is complaint
with spec 1.1 or later to initialize the integrated graphics device.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng 2017-08-15 22:41:53 -07:00
parent 4ff333b7dd
commit ae3ca1251d
1 changed files with 34 additions and 0 deletions
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34
arch/x86/Kconfig
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@ -558,6 +558,40 @@ config VGA_BIOS_ADDR
address of 0xfff90000 indicates that the image will be put at offset
0x90000 from the beginning of a 1MB flash device.
config HAVE_VBT
bool "Add a Video BIOS Table (VBT) image"
depends on HAVE_FSP
help
Select this option if you have a Video BIOS Table (VBT) image that
you would like to add to your ROM. This is normally required if you
are using an Intel FSP firmware that is complaint with spec 1.1 or
later to initialize the integrated graphics device (IGD).
Video BIOS Table, or VBT, provides platform and board specific
configuration information to the driver that is not discoverable
or available through other means. By other means the most used
method here is to read EDID table from the attached monitor, over
Display Data Channel (DDC) using two pin I2C serial interface. VBT
configuration is related to display hardware and is available via
the ACPI OpRegion or, on older systems, in the PCI ROM (Option ROM).
config VBT_FILE
string "Video BIOS Table (VBT) image filename"
depends on HAVE_VBT
default "vbt.bin"
help
The filename of the file to use as Video BIOS Table (VBT) image
in the board directory.
config VBT_ADDR
hex "Video BIOS Table (VBT) image location"
depends on HAVE_VBT
default 0xfff90000
help
The location of Video BIOS Table (VBT) image in the SPI flash. For
example, base address of 0xfff90000 indicates that the image will
be put at offset 0x90000 from the beginning of a 1MB flash device.
config ROM_TABLE_ADDR
hex
default 0xf0000