Commit Graph

4 Commits (4564c44ebeedc42ac6185bd77d2d2729a5737d04)

Author SHA1 Message Date
Leah Rowe 1fe126501a GRUB: use mkhelper.cfg for common variables
Signed-off-by: Leah Rowe <leah@libreboot.org>
2024-07-01 03:36:10 +01:00
Leah Rowe 7451fa629c trees: don't hardcode use of mkpayload_grub
instead, make it a helper function, defined in target.cfg

this means that we can also do the same with other projects
in the future, and it is expected that we will have to.

these helper functions are used in cases where we want
additional actions to be performed.

actually, the helper could be anything. for example, you
could write:

mkhelper="./build foo bar"

and it would do that (at the point of execution, PWD
is the root directory of the build system)

Signed-off-by: Leah Rowe <leah@libreboot.org>
2024-06-27 23:19:08 +01:00
Leah Rowe cf4f828dbe trees: avoid kconfig make commands generically
don't hardcode the check based on whether the current
project is grub. instead, define "btype" in target.cfg

if unset, we assume kconfig and permit kconfig commands
e.g. make menuconfig, make silentoldconfig, etc

this is to avoid the deadliest of sins:
project-specific hacks

Signed-off-by: Leah Rowe <leah@libreboot.org>
2024-06-27 16:23:37 +01:00
Leah Rowe eb4ac3c334 make GRUB multi-tree and re-add xhci patches
The xHCI patches were removed because they caused issues
on Sandybridge-based Dell Latitude laptops. See:
https://codeberg.org/libreboot/lbmk/issues/216

The issue was not reported elsewhere, but we still don't
need xHCI support in Canoeboot's GRUB because none of the
available coreboot targets have xHCI support. However, we
may want it in the future and it helps to keep Canoeboot
in sync with Libreboot (this patch is adapted from lbmk).

Each given coreboot target can say which GRUB tree to use
by setting this in target.cfg:

grubtree="xhci"

In the above example, the "xhci" tree would be used. Some
generic GRUB config has been moved to config/data/grub/
and config/grub/ now looks like config/coreboot/ - also,
the grub.cfg file (named "payload" in each tree) is copied
to the GRUB source tree as ".config", then added to GRUB's
memdisk in the same way, as grub.cfg.

Several other design changes had to be made because of this:

* grub.cfg in memdisk no longer automatically jumps to one
  in CBFS, but now shows a menuentry for it if available

* Certain commands in script/trees are disabled for GRUB,
  such as *config make commands.

* gnulib is now defined in config/submodule/grub/, instead
  of config/git/grub - and this mitigates an existing bug
  where downloading gnulib first would make grub no longer
  possible to download in lbmk.

There is another reason for merging this design change from
lbmk, and that reasoning also applies to lbmk. Specifically:

This change will enable per-board GRUB optimisation in the
future. For example, we hardcode what partitions and LVMs
GRUB scans because * is slow on ICH7-based machines, due
to GRUB's design. On other machines, * is reasonably fast,
for automatically enumerating the list of devices for boot.

Use of * (and other wildcards) could enable our GRUB payload
to automatically boot more distros, with minimal fuss. This
can be done at a later date, in subsequent revisions.

Signed-off-by: Leah Rowe <leah@libreboot.org>
2024-06-02 22:41:46 +01:00