> add the VGA BIOS. set the PCI IDs correctly. Set coreboot display init to >none, and let SeaBIOS run the VBIOS. Thanks, how to let SeaBIOS run the VBIOS? Do I need to set anything?
The VGA BIOS and the PCI IDs are set like this: [*] Add a VGA BIOS image │ (pci8086,0416.rom) VGA BIOS path and filename │ (8086,0416) VGA device PCI IDs The 8086,0416 is set by the T440p's port maker I assume it should be right. A this is my config: CONFIG_CCACHE=y CONFIG_USE_OPTION_TABLE=y CONFIG_USE_BLOBS=y CONFIG_VENDOR_LENOVO=y CONFIG_ONBOARD_VGA_IS_PRIMARY=y CONFIG_VGA_BIOS=y CONFIG_CBFS_SIZE=0x200000 CONFIG_IFD_BIN_PATH="/home/dalao/T440pCorebooting/ifd.bin" CONFIG_ME_BIN_PATH="/home/dalao/T440pCorebooting/me.bin" CONFIG_GBE_BIN_PATH="/home/dalao/T440pCorebooting/gbe.bin" CONFIG_HAVE_IFD_BIN=y CONFIG_BOARD_LENOVO_THINKPAD_T440P=y CONFIG_DRIVERS_PS2_KEYBOARD=y CONFIG_PCIEXP_L1_SUB_STATE=y CONFIG_HAVE_MRC=y CONFIG_MRC_FILE="/home/dalao/T440pCorebooting/mrc.bin" CONFIG_PCIEXP_CLK_PM=y CONFIG_HAVE_ME_BIN=y CONFIG_USE_ME_CLEANER=y CONFIG_HAVE_GBE_BIN=y But i still can't see the archlinux's start screen... Mar 15, 2020, 10:08 by [email protected]: > On Sat, Mar 14, 2020 at 8:33 PM Dalao via coreboot > <[email protected]> wrote: > >> >> >> I have just corebooted T440p. Then I noticed some graphic display problems... >> >> Firstly I "Use libgfxinit" with "Legacy VGA text mode", insert a usb disk >> with archlinux's latest install image iso. I can see a text mode of >> archlinux's start screen. >> >> https://imgur.com/0QqQgJn >> >> But when I hit enter, it shows some log till "Triggering uevents" and then >> there is no display... >> >> https://imgur.com/CHI9jeE >> >> Then I tried "Use libgfxinit" with "Linear "high-resolution" framebuffer". I >> can see the graphic mode of archlinux's start screen, but again after I hit >> enter and see some logs, there is no display... Also, the display is not >> ideal, just at the top left corner not full screen. >> >> https://imgur.com/dvYLERu >> >> Also, under this setting, the nvramcui's display becomes bad. >> >> https://imgur.com/7YG0kOX >> > > unfortunately, many legacy bootloaders seem to assume a full array of > VESA video modes will be available, and fail less than gracefully when > that's not the case. With libgfxinit there is no ability to change > video modes -- all that's available is either the native panel > resolution (high resolution framebuffer) or VGA text mode. > >> Next I included pci8086,0416.rom vbios and tried "Run VGA Option ROMs" with >> "Legacy VGA text mode". This time, I can't see the archlinux start screen as >> shown above, there is no display at the beginning. But I can hit the enter >> blindly. Then after a while I can see archlinux is booting and the first >> line I can see is "Probing EDD (edd=off to disable)...ok" the archlinux >> starts ok. >> >> Lastly I also tried "Run VGA Option ROMs" with "Set framebuffer graphics >> resolution" with the default "framebuffer graphics resolution (1024x768 >> 16.8M-color (8:8:8))" (although my T440p's resolution is 1920x1080). Also >> the Framebuffer mode is changed to "VESA framebuffer". I still can't see >> archlinux's start screen... >> >> >> How to make everything work like the vendor BIOS? i.e., I can see both the >> archlinux's start screen and it's booting. >> > > add the VGA BIOS. set the PCI IDs correctly. Set coreboot display init > to none, and let SeaBIOS run the VBIOS. > >> How to fix the nvramcui under "high-resolution" framebuffer"? >> > > will work properly with above settings > >> Also, as for now it appears seabios can't boot UEFI media. Tianocore by >> default can't boot Linux/Windows installed by legacy method (installed when >> using seabios). my goal is to add UEFI support through tianocore as seabios >> payload (or through tianocore's CSM compatibility support module? ). So that >> it can boot both UEFI installed Windows or legacy installed Windows like the >> vendor bios can do. How to achieve this? >> > > SeaBIOS is a legacy BIOS implementation, so no it can't boot UEFI boot > media. Likewise, Tianocore is a pure UEFI implementation, and doesn't > boot legacy boot media / legacy installed OSes. There should be a way > to use SeaBIOS as a CSM for Tianocore, but currently it's not working > / not implemented (I tried briefly awhile back but didn't have any > luck). > > Personally, given that it's 2020, I'd not bother with legacy-installed > OSes (or SeaBIOS) outside of use with emulation or if a special use > case demands it. Esp given that it's easy enough to migrate Windows > from legacy to UEFI. > >> >> _______________________________________________ >> coreboot mailing list -- [email protected] >> To unsubscribe send an email to [email protected] >> > _______________________________________________ > coreboot mailing list -- [email protected] > To unsubscribe send an email to [email protected] >
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