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Though not used in coreboot builds, and not injected into the
builds in any way, these files are now created seperately when
handling T480/T480s vendor files:
vendorfiles/t480/tb.bin
vendorfiles/t480s/tb.bin
These are created by extracting Lenovo's ThunderBolt firmware
from update files. The updated firmware fixes a bug; older firmware
enabled debug commands that wrote logs to the TB controller's
own flash IC, and it'd get full up with logs, bricking the controller.
If you've already been screwed by this, you must flash externally,
using a padded firmware from Lenovo's updates.
Lenovo's own updater requires creating a boot CD or booting
Windows. This patch in lbmk auto-downloads just the firmware,
and you can flash it externally.
You could simply do this as a matter of course, when installing
Libreboot. You are recommended to update the Lenovo UEFI/EC firmwares
first, before installing Libreboot; please look at the Libreboot
documentation to know exactly which versions.
Then dump the ThunderBolt firmware first, to be sure, and then you
can flash these files. Flashing these updates will prevent the bug
described here:
https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-t-series-laptops/thinkpad-t480-type-20l5-20l6/20l5/solutions/ht508988
You can download Lenovo's installers for various ThinkPad models
there, including T480s/T480s. It is these downloads that this lbmk
patch uses, to extract those files directly.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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this was done with the following command:
./mk -u coreboot t480s_fsp_16mb t480_fsp_16mb
it was set to 256 but should be 512. the SPD is what
contains configuration data for raminit, which training
code uses so that the timings will be correct. if the SPD
size is wrong, the machine won't boot
in practise, lbmk always runs "make oldconfig" on
a coreboot config, before building it, so this was
already being corrected automatically at build time.
however, if that fact ever changes in the future, this
wrong configuration would cause the machines not to boot.
therefore, this can be considered a preventative or perhaps
pre-emptive bug fix.
this fix does not need to be applied to the 20241206 release,
because of the behaviour described above. the final ROM images
do have the spd size set correctly to 512, because of this
design feature in lbmk.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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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.
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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 <leah@libreboot.org>
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it just bootloops and doesn't seem reliable at the moment
Signed-off-by: Leah Rowe <leah@libreboot.org>
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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 <leah@libreboot.org>
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was previously using the VGA ROM.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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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 <leah@libreboot.org>
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This uses the excellent deguard utility, written by
the excellent Mate Kukri.
A few bugs but it mostly works. Documentation to come
shortly, in lbwww.git.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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