to my knowledge, this feature has never been used,
but lbmk permits resources/coreboot/boardname/extra.sh
to execute, as provided by the maintainer, with working
directory set to: coreboot/boardname
this could be used to extend lbmk in a number of ways
for example, it could be used to patch 3rdparty/
it could also be used to break coreboot in creative
and novel ways. hint hint.
the "board" variable in prepare_new_coreboot_tree()
is also declared in fetch_coreboot_trees
for the one in prepare_new_coreboot_tree, it's passed
as an argument to the function, so give it a new name
i learned that some shells have a global scope, when
using variables of the same name between functions
this should download all trees:
./download coreboot
without this patch, it doesn't
with this patch, it works
i overlooked this during earlier
refactoring. auditing revealed it.
top-down order, and *still* rfc 3676 compliant
i finished simplifying the logic, and
i split everything into smaller functions
there is still more more polishing to do
final touches will be done in new revisions
coreboot trees/patching is still handled
specifically by "./download coreboot"
command now available in lbmk:
./gitclone coreboot
this *only* creates the directory at:
coreboot/coreboot
this directory is never used in builds.
it is only used by download/coreboot to
create patched trees for each mainboard
consistent indentation, and 80-line character limit
(RFC 2646)
top-down order, a main() is introduced, split into
more functions
non-zero-status exit (with message) now, when a non-
defined target is provided, e.g. nonexistentboard_4mb
puffy!
the cbfstool command within subshell now also
exits with non-zero status, if it fails (most
likely because extraction failed, for some reason,
of the coreboot rom image for running through it)
the previous code merely exited from the subshell,
but the intended behaviour is for the entire script
to halt execution, and exit with non-zero status.
this patch fixes that bug.
top-down order for all logic, and shorter code lines,
conforming to rfc 2646 (no more than 80 characters)
the 80-character rule is violated for variables containing
long strings, such as wayback machine urls (can't be helped)
a few bugs were discovered, which will be fixed in follow-up
revisions, such as:
* exit status not handled inside subshell
* in general, exit status should be handled
more explicitly, rather than relying on -e
for our purposes, grub and gnulib are one in the same
if one fails, both have failed
exit with non-zero status if gnulib fails
the script sets -e so it will fail if grub fails to
download, which is tried before gnulib, and if that
happens, the grub directory is not created
the old code was specifing an absolute offset for
insertion of mrc.bin - cbfstool interprets anything
above 0x80000000 as top-aligned memory address in
x86, and anything below as an obsolute offset in
the flash, like with the old number
where a top-aligned address is provided to cbfstool,
the absolute position is calculated for the flash,
and cbfstool inserts it in the correct rom location
the benefit of this change is that the absolute
offset is now calculated automatically, which means
that the code will be correct even if the flash
size changes. for example, if 16MB flash is used
whereas 12MB is currently the default an support
haswell hardware
coreboot does not provide anything readably like
Kconfig, for extracting this value. it's baked
into the source code of coreboot, so you have to
find it. the correct location is hardcoded for
each platform, and always the same on each platform,
regardless of mainboard
top-down function order, with specific functions for
each type of blob. startup logic moved into main(),
also split into smaller functions
"write one program that does one thing well"
blobutil is like that, and has this added philosophy:
"write one function that does one thing well"
during the course of this re-factoring, several bugs
and issues were found, that are pre-existing. these
will be corrected in follow-up revisions
I added this in upstream to prevent people from accidentally flashing
roms without a payload resulting in a no boot situation, but in
libreboot lbmk handles the payload and thus this warning always comes
up. This has caused confusion and concern so just patch it out.
users reported it doesn't boot in recent releases, with the
february 2023 coreboot revision update
i have one in the lab, i'll just re-test it and fix whatever's
wrong for a future release
previously, "normal" initmode relied on the vgarom-based
seabios config, which enables option roms, but then lbmk
would insert pci-optionrom-exec 0 for vgarom, and 2 for normal
in libreboot, coreboot roms with "vgarom" in the filename do
pci option rom execution from coreboot, and "normal" roms
do execution from seabios(where seabios is the only payload
provided on normal setups)
this is because payloads like grub can also be used, on vgarom
setups, where coreboot must handle oprom execution
the deleted patch (in this commit) was written to fix an
issue theoretically; it hasn't been fully tested, and some
people have reported strange issues since this patch was
merged - there is no proof that this patch causes them, but
removing this patch is the correct thing to do regardless
i downloaded this file from git manually at some point,
when rebasing changes (i think it was the ec ones)
the logic in the file is correct but i forgot to mark
it executable
without this commit, lbmk fails utterly, on all the newer
intel boards
This reverts commit fe2b72035f.
The GRUB patch to fix the E6400 broke other systems and has been
reverted. As a result, GRUB needs to be disabled again on the E6400
until a better fix has been created.
This introduces a patch to grub which disables the coreboot
specific handling, allowing PS/2 keyboards to be handled the
same as i386-pc. However this alone breaks the keyboard in
Linux, requiring coreboot to perform PS/2 initialization.
I think GRUB may be restoring the original configuration of
the PS/2 controller once it exits, and if coreboot doesn't
initialize the controller then it's restored to the default
state which Linux doesn't seem to like. I think the emulated
keyboard interface provided by the EC on the E6400 behaves
in a non-standard way that is incompatible with the old
coreboot specific handling.
ps/2 internal keyboard faulty in grub target
i386-coreboot, according to nic3-14159
normal i386-pc grub (bios grub) is fine,
booted from seabios
it is being investigated
Tested the 4MiB ROMs but not the 8 or 16 MiB ones. This uses the same
board.cfg as the GM45 ThinkPads with an IFD+GBE from ich9gen.
Known issues:
- The internal keyboard does not work properly in GRUB. It seems like
the keyboard controller is outputing set 1 (XT) scancodes, but GRUB
is interpreting them as set 2 (AT) scancodes. This may also have
something to do with scancode translation. However, the keyboard works
fine in SeaBIOS and Linux. USB keyboards also work properly.
- The subsystem IDs in the GBE region are hardcoded for a Thinkpad in
ich9gen, though this doesn't seem to cause issues in Linux. The vendor
IFD and GBE region do have some differences from the generated
binaries, though they do not appear to be critical.
libreboot will still include microcode updates
by default, but mitigations against broken speedstep
and reboot (when microcode updates are excluded) were
removed following the merge with osboot
this patch restores those mitigations; the patch
reverts coreboot to older smrr code (which works fine, it
isn't critical to use the new behaviour) and disables peci
(pointless feature)
i'll probably re-tool this later to apply the changes
conditionally to whether ucode is present
this is not a change in policy. policy says:
include cpu microcode updates by default
policy also says:
libreboot must be configurable
microcode removal via cbfstool remove -n, counts as
configuration, and in practise is not possible on
gm45 patches in current libreboot; this patch corrects
that problem, allowing the machines to work somewhat
well (same stability issues as before, like MCE errors
resulting in kernel panic on high CPU/memory usage,
but i digress)
happy... hacking
This is useful for e.g. HP EliteBook 2560p.
In coreboot config, enable e.g. (for lbmk blobutil):
CONFIG_KBC1126_FW1="../../ec/hp2560p/ec.bin.fw1"
CONFIG_KBC1126_FW2="../../ec/hp2560p/ec.bin.fw2"
In resources/blobs/sources you would have these entries:
EC_url
EC_url_bkup
EC_hash
Leah Rowe