lbmk/config/coreboot/macbook21/target.cfg

tree="i945"
xarch="i386-elf"
payload_seabios="y"
payload_seabios_withgrub="y"
payload_memtest="y"
grub_scan_disk="ahci"
i945: switch boards to 20230625 coreboot revision On T60 with Libreboot 20231106 and the GRUB payload, a user reported this error in GRUB when a battery was connected: "alloc magic is broken at 0x7b1aedf0: 0" This error disappears when a battery is not connected, or when using Libreboot 20230625. The issue has persisted through to LIbreboot 20240225 and after, and I believe the issue will be somewhere in coreboot, not in GRUB itself. For now, switch i945 laptops (X60, T60, Macbook2,1) back to the February 2023 coreboot revision used in Libreboot 20230625. A bisect can be done before the next Libreboot release, ETA May 2024, if time permits. Otherwise, this revert should solve the problem for now, at least so far as Libreboot is concerned. The following coreboot patches have been backported: commit 29030d0f3dad2ec6b86000dfe2c8e951ae80bf94 Author: Bill Xie <persmule@hardenedlinux.org> Date: Sat Oct 7 01:32:51 2023 +0800 drivers/pc80/rtc/option.c: Stop resetting CMOS during s3 resume Further patches from upstream: commit 432e92688eca0e85cbaebca3232f65936b305a98 Author: Bill Xie <persmule@hardenedlinux.org> Date: Fri Nov 3 12:34:01 2023 +0800 drivers/pc80/rtc/option.c: Reset only CMOS range covered by checksum These patches fixed S3 on GM45 machines, though it will be useful on the i945 machines aswell. The reason I'm doing it this way it is because I don't have a battery for my X60 or T60, and my T60 isn't in a very good state either, so I can't reproduce the error myself yet. Signed-off-by: Leah Rowe <leah@libreboot.org> 2024-04-26 08:37:01 +00:00			`tree="i945"`
update/trees: further simplify crossgcc handling arch no longer needs to be set, on multi-tree projects, and it has been renamed to xarch the new behaviour is: if xarch is set, treat it as a list of crossgcc targets and go through the list. set the first one as the target, for what lbmk builds, but build all of the defined crossgccc targets crossgcc_ada is now xlang, and defines which languages to build, rather than whether to build gcc-gnat Signed-off-by: Leah Rowe <leah@libreboot.org> 2023-12-27 15:18:21 +00:00			`xarch="i386-elf"`
libreboot! this is forked from the "libre" branch in osboot, which is itself a libre, deblobbed fork of osboot, a blobbed up fork of libreboot libreboot needed to be purged clean. this is the new libreboot development repository. the old one has been abandoned 2021-05-18 12:56:12 +00:00			`payload_seabios="y"`
coreboot: only run GRUB as a secondary payload See: https://codeberg.org/libreboot/lbmk/issues/216 Almost all users will be OK running GRUB, but a minority of users have experienced a fatal error pertaining to grub_free() or grub_realloc() (as my investigation of GRUB sources reveal when grepping the error reported in the link above). We don't yet know what the bug is, only that the error occurs, leading to an effective brick if the user has GRUB as their primary payload. So far, it has only been reported on some Intel SandyBridge-based Dell Latitudes in Libreboot, but we can't be too sure. The user reported that memtest86+ passes just fine, and SeaBIOS works; BIOS GRUB also works, which means that the bug is likely only in an area of GRUB that runs specifically on the coreboot payload, so it's probably a driver in GRUB when running on the metal rather than BIOS/UEFI. The build system supports a configuration whereby SeaBIOS is the primary payload, but GRUB is available in the SeaBIOS boot select menu, and an additional configuration is available where GRUB is what SeaBIOS executes first (while still providing boot select); both of these are now the only configurations available, on all x86 targets except QEMU. The QEMU target is fine because if the bug occurs there, you can just close QEMU and try a different image. Even after this bug is later identified and fixed, the GRUB source code is vastly over-engineered and there are likely many more such bugs. SeaBIOS is a reliable payload; the code is small and robust. Remember always: Code equals bugs Therefore, this configuration change is likely going to be permanent. This will apply in the next release. Signed-off-by: Leah Rowe <leah@libreboot.org> 2024-05-27 13:24:26 +00:00			`payload_seabios_withgrub="y"`
Include memtest86+ on setups where this is practical 2021-11-01 04:04:56 +00:00			`payload_memtest="y"`
re-configure grub_scan_disk on various targets Signed-off-by: Leah Rowe <leah@libreboot.org> 2024-05-27 20:33:53 +00:00			`grub_scan_disk="ahci"`