On Sat, Sep 23, 2017 at 02:09:32PM +0000, One7two99 via coreboot wrote:
I would like to rebuild my Coreboot now so that it supports dualbooting (Linux / Windows).
Most howtos for the X230 only cover the flashing without supporting graphical boot. The wiki page http://www.coreboot.org/VGA_support seem to cover some part, but is not specific to the X230.
Not sure if X230 is shipped with BIOS or UEFI, but either methods desribed on that page will work. Use the vendor image if possible to extract the VGA Option ROM. A valid dump will be exactly 64K in size, the first two bytes being `55 aa'.
Has someone build coreboot including the support for graphics from startup to be able to boot into windows?
I'm interested in what to choose in "make menuconfig" and where to get the vga bios rom for the x230, I would then condense the information in a X230 How-to for Dualboot-Setup.
I never booted Windows but here are my coreboot and SeaBIOS configurations used in a working build including the pci8086,0166.rom blob to initialise graphics.