consistent indentation, and 80-line character limit
(RFC 2646)
top-down order, a main() is introduced, split into
more functions
non-zero-status exit (with message) now, when a non-
defined target is provided, e.g. nonexistentboard_4mb
puffy!
the cbfstool command within subshell now also
exits with non-zero status, if it fails (most
likely because extraction failed, for some reason,
of the coreboot rom image for running through it)
the previous code merely exited from the subshell,
but the intended behaviour is for the entire script
to halt execution, and exit with non-zero status.
this patch fixes that bug.
top-down order for all logic, and shorter code lines,
conforming to rfc 2646 (no more than 80 characters)
the 80-character rule is violated for variables containing
long strings, such as wayback machine urls (can't be helped)
a few bugs were discovered, which will be fixed in follow-up
revisions, such as:
* exit status not handled inside subshell
* in general, exit status should be handled
more explicitly, rather than relying on -e
where the asterisk is used, it can sometimes
literally try to patch with a file named "*",
which of course does not exist
this change fixes an lbmk error when running:
./download seabios
this was caused recently, because all patches
were seabios were removed (lbmk currently uses
stock seabios, without patching it)
for our purposes, grub and gnulib are one in the same
if one fails, both have failed
exit with non-zero status if gnulib fails
the script sets -e so it will fail if grub fails to
download, which is tried before gnulib, and if that
happens, the grub directory is not created
the old code was specifing an absolute offset for
insertion of mrc.bin - cbfstool interprets anything
above 0x80000000 as top-aligned memory address in
x86, and anything below as an obsolute offset in
the flash, like with the old number
where a top-aligned address is provided to cbfstool,
the absolute position is calculated for the flash,
and cbfstool inserts it in the correct rom location
the benefit of this change is that the absolute
offset is now calculated automatically, which means
that the code will be correct even if the flash
size changes. for example, if 16MB flash is used
whereas 12MB is currently the default an support
haswell hardware
coreboot does not provide anything readably like
Kconfig, for extracting this value. it's baked
into the source code of coreboot, so you have to
find it. the correct location is hardcoded for
each platform, and always the same on each platform,
regardless of mainboard
top-down function order, with specific functions for
each type of blob. startup logic moved into main(),
also split into smaller functions
"write one program that does one thing well"
blobutil is like that, and has this added philosophy:
"write one function that does one thing well"
during the course of this re-factoring, several bugs
and issues were found, that are pre-existing. these
will be corrected in follow-up revisions
I added this in upstream to prevent people from accidentally flashing
roms without a payload resulting in a no boot situation, but in
libreboot lbmk handles the payload and thus this warning always comes
up. This has caused confusion and concern so just patch it out.
users reported it doesn't boot in recent releases, with the
february 2023 coreboot revision update
i have one in the lab, i'll just re-test it and fix whatever's
wrong for a future release
previously, "normal" initmode relied on the vgarom-based
seabios config, which enables option roms, but then lbmk
would insert pci-optionrom-exec 0 for vgarom, and 2 for normal
in libreboot, coreboot roms with "vgarom" in the filename do
pci option rom execution from coreboot, and "normal" roms
do execution from seabios(where seabios is the only payload
provided on normal setups)
this is because payloads like grub can also be used, on vgarom
setups, where coreboot must handle oprom execution
Leah Rowe