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drivers/pc80/vga: Add legacy VGA romstage support 

This is support for adding legacy VGA support into romstage.
Support for this is being provided by libgfxinit.

The current use case allows us to initialize the display
before memory init (prior to physical memory init) to inform
the user when lengthy memory training is needed.

BUG=b:252792591
BRANCH=firmware-brya-14505.B
TEST=VGA code compiles for romstage

Change-Id: I81309871e8db71657b2a9816708141f121d767d3
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70278
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Tarun Tuli <taruntuli@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Jeremy Compostella 2022-12-01 16:31:55 -07:00 committed by Subrata Banik
parent 114f87bf2e
commit 84c3b5e051
2 changed files with 10 additions and 0 deletions
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5
src/drivers/pc80/vga/Kconfig
View File

@ -2,3 +2,8 @@ config VGA
bool bool
help help
Include legacy VGA support code. Include legacy VGA support code.
config ROMSTAGE_VGA
bool
help
Include legacy VGA support code in romstage.

5
src/drivers/pc80/vga/Makefile.inc
View File

@ -1,5 +1,10 @@
ifeq ($(CONFIG_ARCH_X86),y) ifeq ($(CONFIG_ARCH_X86),y)
romstage-$(CONFIG_ROMSTAGE_VGA) += vga_io.c
romstage-$(CONFIG_ROMSTAGE_VGA) += vga_palette.c
romstage-$(CONFIG_ROMSTAGE_VGA) += vga_font_8x16.c
romstage-$(CONFIG_ROMSTAGE_VGA) += vga.c
ramstage-$(CONFIG_VGA) += vga_io.c ramstage-$(CONFIG_VGA) += vga_io.c
ramstage-$(CONFIG_VGA) += vga_palette.c ramstage-$(CONFIG_VGA) += vga_palette.c
ramstage-$(CONFIG_VGA) += vga_font_8x16.c ramstage-$(CONFIG_VGA) += vga_font_8x16.c