lbmk/config/submodule/grub/xhci/gnulib/module.cfg

subrepo="git://git.sv.gnu.org/gnulib"
subrepo_bkup="https://codeberg.org/libreboot/gnulib"
subhash="9f48fb992a3d7e96610c4ce8be969cff2d61a01b"
make GRUB multi-tree and re-add xhci patches Re-add xHCI only on haswell and broadwell machines, where they are needed. Otherwise, keep the same GRUB code. 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, including on the Haswell/Broadwell hardware where they are needed, but the build system could only build one version of GRUB. The older machines do not need xHCI patches, because they either do not have xHCI patches, or work (in GRUB) because they're in EHCI mode when running the payload. So, the problem is that we need the xHCI patches for GRUB on Haswell/Broadwell hardware, but the patches break Sandybridge hardware, and we only had the one build of GRUB. To mitigate this problem, the build system now supports building multiple revisions of GRUB, with different patches, and 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. The coreboot option CONFIG_FINALIZE_USB_ROUTE_XHCI has been re-enabled on: Dell OptiPlex 9020 MT, Dell OptiPlex 9020 SFF, Lenovo ThinkPad T440p and Lenovo ThinkPad W541 - now USB should work again in GRUB. The GRUB payload has been re-enabled on HP EliteBook 820 G2. 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> 2024-06-01 22:01:30 +00:00			`subrepo="git://git.sv.gnu.org/gnulib"`
			`subrepo_bkup="https://codeberg.org/libreboot/gnulib"`
git.sh: support downloading files as submodules when we download coreboot, we currently don't have a way to download crossgcc tarballs, so we rely on coreboot to do it, which means running the coreboot build system to do it; which means we don't get them in release archives, unless we add very hacky logic (which did exist and was removed). the problem with coreboot's build system is that it does not define backup links for each given tarball, instead relying on gnu.org exclusively, which seems OK at first because the gnu.org links actually return an HTTP 302 response leading to a random mirror, HOWEVER: the gnu.org 302 redirect often fails, and the download fails, causing an error. a mitigation for this has been to patch the coreboot build system to download directly from a single mirror that is reliable (in our case mirrorservice.org). while this mitigation mostly works, it's not redundant; the kent mirror is occasionally down too, and again we still have the problem of not being able to cleanly provide crossgcc tarballs inside release archives. do it in config/submodules, like so: module.list shall say the relative path of a given file, once downloaded, relative to the given source tree. module.cfg shall be re-used, in the same way as for git submodules, but: subfile="url" subfile_bkup="backup url" do this, instead of: subrepo="url" subrepo_bkup="backup url" example entries in module.list: util/crossgcc/tarballs/binutils-2.41.tar.xz util/crossgcc/tarballs/gcc-13.2.0.tar.xz util/crossgcc/tarballs/gmp-6.3.0.tar.xz util/crossgcc/tarballs/mpc-1.3.1.tar.gz util/crossgcc/tarballs/mpfr-4.2.1.tar.xz util/crossgcc/tarballs/nasm-2.16.01.tar.bz2 util/crossgcc/tarballs/R06_28_23.tar.gz the "subrev" variable (in module.cfg) has been renamed to "subhash", so that this makes sense, and that name is common to both subfile/subrepo. the download logic from the vendor scripts has been re-used for this purpose, and it verifies files using sha512sum. therefore: when specifying subrepo(git submodule), subhash will still be a sha1 checksum, but: when specifying subfile(file, e.g. tarball), subhash will be a sha512 checksum the logic for both (subrepo and subfile) is unified, and has this rule: subrepo* and subfile* must never both be declared. the actual configuration of coreboot crossgcc tarballs will be done in a follow-up commit. this commit simply modifies the code to accomodate this. over time, this feature could be used for many other files within source trees, and could perhaps be expanded to allow extracting source tarballs in leiu of git repositories, but the latter is not yet required and thus not implemented. Signed-off-by: Leah Rowe <leah@libreboot.org> 2024-06-08 02:01:05 +00:00			`subhash="9f48fb992a3d7e96610c4ce8be969cff2d61a01b"`