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on e6400_4mb, the release build scripts remove nvidia's vga
rom which is used on dgpu models. however, microcode is also
removed in separately copied rom images
the inject script was inserting vgaroms directly into these
no-microcode roms, but the microcode blob is bigger than the
vga rom, and cbfstool inserts into the first available free
spot within cbfs, so it was inserting into the spot where
cpu microcode went. this caused the rom checksum to not match
what was generated during build/release/roms being executed
the only real fix is to guarantee offsets within cbfs for all
files, by recording what offsets were used and then calculating
that during insertion
so this patch is a workaround, but fixes the issue. the workaround
is: don't insert blobs directly on no-microcode roms, instead
insert only on microcode-based roms, then re-copy those roms
and remove microcode in aptly named copies
it's a bit more convoluted, but works perfectly fine.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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sha-1 has known collision issues, which may not be readily
exploitable yet (in our context), but we should ideally use
a more secure method for checking file integrity.
therefore, use sha-2 (sha512sum) for checking files. this is
slower than sha-1, but checksum verification is only a minor
part of what lbmk does, so the overall effect on build times
is quite negligible.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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we are copying large numbers of ROM images, and the
host system may have /tmp under a tmpfs; that same
host system may or may not have a lot of memory.
respect the user's machine.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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they all more or less use the same variables, so put
them all under include/blobutil.sh
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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just like the last patch, target.cfg handling is not
required in this script either. remove it.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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The same ROM images that you flash on Intel GPU variants,
are now flashed on Nvidia models. The same ROM will work
on both. If an Intel GPU variant is present, libgfxinit
is used, and the VGA ROM is used if an Nvidia GPU variant;
however, release ROMs will scrub the nvidia option ROM,
so release ROMs will only work on Intel GPUs unless you
run the blobutil inject command.
I decided to no longer have this under WIP, but to put
it in master. The issue with it pertains to video drivers,
which is not Libreboot's problem.
Nouveau crashes under Linux, so use "nomodeset" if it does.
The "nv" drivers in BSD systems work very well.
The nvidia model of E6400 isn't recommended for other
reasons, namely: poor thermal cooling (thermal pad on
the GPU) and that Nvidia GPU doesn't get very good
performance on any libre drivers anyway. The Intel GPU
variant is better, in terms of power efficiency and
software support; the intel variant also works with
native graphics initialisation in coreboot.
This board port already only enables SeaBIOS, which will
simply execute the VGA ROM. Blobutil already supports
reading the config, detecting that a VGA ROM is needed,
because that part of the WIP E6400 branch was already
merged in lbmk master.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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this means the unified /tmp handling is now provided for
in both the former "fetch" and "fetch_trees" script, which
are now (respectively):
./update project repo
./update project trees
if the fetch scripts weren't cleaning /tmp before, they
now are, because lbmk handles it
Signed-off-by: Leah Rowe <leah@libreboot.org>
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the error messages that it shows are benign, but users
see them and worry that something went wrong
this patch reduces the number of people asking pointless
questions on irc
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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