lbmk.git/config/coreboot, branch 20241206

Revert "Revert "disable u-boot on thinkpad t480""

2024-12-05T13:01:31+00:00

Nope! Bootflow menu is cursed on this machine.

Too many issues in U-Boot on this machine. I did however
boot a Debian installer after it booted, using bootflow.

The installed system wouldn't boot with bootflow, but I could
then boot it with "bootefi bootmgr".

I'll rig up a uart on the T480 when I get round to it and
start investigating U-Boot bugs on this board.

I don't want people flashing something that doesn't work.
GRUB and SeaBIOS work, so ship those, and don't ship U-Boot.

This reverts commit 19ec440a6f79dcbb089715fef814808a0fd40ae0.

Revert "disable u-boot on thinkpad t480"

2024-12-05T09:55:06+00:00

u-boot does work after a few reboots. it just boot loops.

let it run. it should be able to boot from nvme. sata still needs
some work (sata only works in grub, on this machine)

This reverts commit cd9baca5d664d392316d94ccaa7deb209d4e1828.

Signed-off-by: Leah Rowe

add patch from mkukri fixing t480 sata

2024-12-05T09:33:51+00:00

nvme worked but not sata. with this, t480 users with sata
ssds should be able to boot linux nicely

Signed-off-by: Leah Rowe

disable u-boot on thinkpad t480

2024-12-05T09:29:59+00:00

it just bootloops and doesn't seem reliable at the moment

Signed-off-by: Leah Rowe

fix board name for coreboot/dell7010sff

2024-12-03T15:33:27+00:00

i'd copied the t1650 config and reselected the board lazily.

this fixes the issue:

https://codeberg.org/libreboot/lbmk/issues/242

Signed-off-by: Leah Rowe

Add SPD support for onboard ThinkPad T480S RAM

2024-12-02T16:32:15+00:00

Patchset 20 from:

https://review.coreboot.org/c/coreboot/+/83274/18..20

Updated to that. A bunch of changes I made locally have been
copied here, thus removed from lbmk.

The previous setup in lbmk was to have only the DIMM slot work,
on the ThinkPad T480S, without setting up SPD for the onboard RAM>

Mate Kukri reverse engineered the scheme by which the SPDs are
chosen at boot, based on the wiring of the board. This should
just about match the way Lenovo did it in their firmware.

Signed-off-by: Leah Rowe

Disable m2 caddy hotplug on T480S

2024-12-02T11:29:19+00:00

This fixes an error where nvme disappears and gets renamed
on s3 resume. Mate Kukri told me to test that and it worked.

Signed-off-by: Leah Rowe

Enable legacy 8254 timer on ThinkPad T480

2024-12-02T06:09:03+00:00

I also enabled this on T480S, because otherwise SeaBIOS hung.

Enabling it shouldn't cause any harm on the T480, though Mate
did say that his machine seemed to work with my setup.

However, I believe that was when I gave him the ones that lbmk
built with the VGA ROM. Now it builds with libgfxinit, because
Mate was able to fix libgfxinit on this machine.

Signed-off-by: Leah Rowe

libgfxinit on Thinkpad T480

2024-12-02T06:05:41+00:00

was previously using the VGA ROM.

Signed-off-by: Leah Rowe

NEW MAINBOARD: ThinkPad T480S

2024-12-02T05:57:34+00:00

Added t480s delta to deguard, for MFS config.

Updated coreboot/next to latest t480 patch set,
which includes t480s. This porting was done by
Mate Kukri.

also includes experimental t480s support

Also added a data.vbt file (not in the gerrit patch)
for the T480s.

I had to turn on 8254 legacy timer on t480s, otherwise
SeaBIOS would hang. Same issue I saw on OptiPlex 3050 Micro.

Minor issue:

On S3 resume, nvme0n1 for example got renamed to nvme0n2.
This caused a crash if running Linux from the nvme. I confirmed
this via live USB distro. So this port will need some tweaking
before it can be considered stable.

Also uses libgfxinit, which Mate recently fixed. I'm
going to enable libgfxinit on regular T480 next.

Signed-off-by: Leah Rowe