disk/ahci: Unaligned pointer with old commit as coreboot payload

[Paul Menzel]

Dear GRUB folks,


further trying to bisect the AHCI regression on, that the GRUB payload
does not detect the AHCI drive [1], I tried to build GRUB from commits
changing `grub-core/disk/ahci.c`, I built commit dc2a6c8b (Improve AHCI
detection and command issuing.), but it it fails to boot with

        Unaligned pointer …
        Aborted.

The same happens, when I just checkout that revision for `ahci.c` and
leave the rest as is.

        $ git checkout dc2a6c8b0e3dfe3bce78dbe0febcd9d4d9038411 -- 
grub-core/disk/ahci.c
        $ ./autogen.sh
        $ ./configure --with-plattform=coreboot
        $ make -j
        $ make default_payload.elf

I’ll attach that version of `ahci.c` to this message. Do you see what
could be causing that unaligned pointer?


Thanks,

Paul


[1] https://lists.gnu.org/archive/html/grub-devel/2014-11/msg00026.html

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