Same concept as SeaGRUB, but for U-Boot. SeaBIOS starts, but
has a bootorder file loading U-Boot first, from flash.
You can interrupt it with the ESC menu, to boot something else
in SeaBIOS, including GRUB.
With this, we can effectively provide extremely user-friendly
UEFI-first setups in Libreboot.
Take that, edk2!
Signed-off-by: Leah Rowe <leah@libreboot.org>
For some reason, 32-bit U-Boot only works when executed from
GRUB, but not SeaBIOS; 64-bit U-Boot only works from SeaBIOS!
This will have to be investigated. Standalone U-Boot, where
U-Boot is the primary payload, has not yet been tested in
Libreboot, and will not be provided for some time due to
stability concerns. More testing is needed!
Signed-off-by: Leah Rowe <leah@libreboot.org>
Currently seems to stall when booted from the GRUB
payload, but works when booted from the SeaBIOS menu.
I also tested it as a standalone payload and it seems
to boot. Will test on hardware next, and start adding
it to more mainboards.
Signed-off-by: Leah Rowe <leah@libreboot.org>
NOTE: Support added for xarch target x86_64-elf,
but U-Boot failed to build with this error:
OBJCOPY lib/efi_loader/helloworld.efi
x86_64-elf-objcopy: lib/efi_loader/helloworld_efi.so: invalid bfd target
make[2]: *** [scripts/Makefile.lib:476: lib/efi_loader/helloworld.efi] Error 1
Since I'm building U-Boot for x86_64 *on* an x86-64
host, and since that is currently the recommended type
of machine to use for lbmk development, and since the
other x86 payloads currently don't cross compile anyway,
this is an acceptable compromise for now. This is because
at present, I'm not making U-Boot the primary payload on x86,
instead preferring to chain it from GRUB and SeaBIOS.
The target.cfg file for x86 u-boot shows xarch/xtree commented.
Uncomment these to compile on crossgcc instead of hostcc.
I mention 64-bit because I initially did this first, but decided
to do 32-bit first. I'll work on the 64-bit one next (SPL).
It's only enabled in QEMU for now.
Signed-off-by: Leah Rowe <leah@libreboot.org>
Remove what is now unnecessary bloat, for ensuring that
GRUB is the primary payload; SeaGRUB is the only preference,
as per lbmk design.
The SeaBIOS hanging issue was fixed, so SeaGRUB is OK now.
Signed-off-by: Leah Rowe <leah@libreboot.org>
the .git directory never exists anyway, when doing a release,
so the purpose this is intended is defeated by lbmk's design.
individual headers say "pcsx-redux team" as copyright anyway,
and the code for generating that COPYING file, with MIT license
and correct years (matching the entire source code for the
open bios) remains correct.
a mitigation instead of this patch might be to maintain a hardcoded
list of authors, and manually update it over time, but this is not
required. however, it may be good practise for upstream to maintain
such a file. perhaps i should contact them?
Signed-off-by: Leah Rowe <leah@libreboot.org>
I also checked the copyright declarations in the
directory src/mips/openbios where the PCSX-Redux BIOS
is, gleaning all the copyright years: 2019-2024 at this
time.
The years will be updated as and when PCSX-Redux is
updated in lbmk. Their BIOS is under MIT so I made lbmk
generate an appropriate COPYING file alongside the binary,
containing:
Copyright (c) 2019-2024 PCSX-Redux authors
Along with the actual text of the MIT license. With all
of this, the PCSX-Redux BIOS can now be included in
Libreboot releases.
No actual tarball is created. The release script in lbmk
simply copies the bin/ directory to ../roms
I'm leaving the PCSX-Redux BIOS release uncompressed,
because, and this will sound patronising because that is
my precise intention: Windows users don't know how to do
anything. If I provide a tarball to Windows users, they
won't know what to do. Libreboot releases always go on rsync
mirrors, which also have HTTP servers with indexing enabled,
for browsing release files.
I mention Windows users, because most people who use the PCSX
Redux BIOS will probably use it on a PlayStation emulator, and
most emulator users are on Windows. I can't really be bothered
to provide it as a .zip archive, and it's only 512kb, so just
provide it uncompressed in Libreboot releases!
Releases were already possible under this scheme, so this
patch really just adds the COPYING file. It's simply a courtesy
to the PCSX-Redux developers, providing proper credit to them.
Signed-off-by: Leah Rowe <leah@libreboot.org>
on 3050micro, we disable seabios as a primary payload,
making grub a pribary payload instead.
the way it worked, the roms were still named seagrub
and the seabios rom would be compiled, but with the wrong
path, so seabios wouldn't be executed; seabios would hang
anyway, on this board.
instead, engineer it in such a way as to disable seabios_
images on this board. also, rename seagrub_ to grub_.
i normally only permit seagrub, and not grub, but i make an
exception for 3050micro because we know grub works, but seabios
currently hangs on this board (which means no bsd).
Signed-off-by: Leah Rowe <leah@libreboot.org>
SeaBIOS is known to hang on this board. It is being investigated.
Add two variable options for target.cfg files:
* seabiosname
* grubname
This string defines where it would be located in CBFS.
Signed-off-by: Leah Rowe <leah@libreboot.org>
I also added a "cleanargs" argument, similar to the makeargs
argument, to work around a build error.
This builds the PCSX-Redux PS1 BIOS. They reverse engineered
the Sony PS1 BIOS and wrote a free one under MIT license.
Run this:
./mk -b pcsx-redux
The file will appear: bin/playstation/openbios.bin
Signed-off-by: Leah Rowe <leah@libreboot.org>
same as the last change. make the main function a wrapper
that dry-runs the real function.
if the "dry" variable is blank, it executes.
Signed-off-by: Leah Rowe <leah@libreboot.org>
when badhash=y, the utils should be deleted, but
the check is deleting if badhash isn't n. if the
hash check isn't being performed, then this will
always be the case and the utils are always deleted.
make it positively delete the file only if badhash=y,
not when it isn't n. while this may not sound very
different, it will prevent the utils being deleted and
re-build endlessly in other cases, like when building
release archives and running the inject --nuke mode
on every image that gets built.
Signed-off-by: Leah Rowe <leah@libreboot.org>
we want multiple seagrub images made, with different
keymaps, but we only want one non-seagrub image.
however, we also want grub in the non-seagrub image.
it just means that seabios is primarily what the user
wants, and they might occasionally use grub, whereas
the seagrub images are for people who primarily want
grub but may occasionally access the seabios menu.
right now, the seabios images really only contain seabios,
but there's no harm in adding grub to them.
Signed-off-by: Leah Rowe <leah@libreboot.org>
don't rely on build/coreboot.rom staying in place,
because sometimes it can get purged under certain
conditions, due to idiosyncrasies in the coreboot
build system, even when we don't explicitly clean it
Signed-off-by: Leah Rowe <leah@libreboot.org>
this time, only handle multiple keymaps on seagrub
images. for images where seabios is first but does
not immediately load grub, whether grub is still
available in flash, just do one image (US Qwerty)
this still results in fewer images per target than
Libreboot 20240612, but should prevent most users
from being annoyed. i got a few people asking
repeatedly, and i hadn't documented yet how to add
keymap.gkb or how to remove bootorder, to get a
different keymap or disable seagrub respectively.
i anticipate that i'll get such questions a lot, even
if i do document it, so i'm reversing that decision.
it doesn't result in much extra code. the new design
in lbmk makes this sort of thing much simpler.
Signed-off-by: Leah Rowe <leah@libreboot.org>
lbmk must still define payloads, but specific configs
may use coreboot's build system instead.
you might use this to add your own config with, say,
tianocore payload, using coreboot.git to build it,
rather than using lbmk's choice of payloads.
Signed-off-by: Leah Rowe <leah@libreboot.org>
actual source code is not scanned, but config directories are
scanned. simply get the checksum of each file under config/
pertaining to a given project/tree, and also for the given
target. coreboot utilities are also handled.
if it changes, in any way, delete and re-build automatically.
such deletions should probably still be done manually, as part
of understanding the build system, but this change should make
the build system much easier to use during development.
Signed-off-by: Leah Rowe <leah@libreboot.org>
instead of using lots of if/else conditions, do that once
and set a variable, dry, to :
if not doing a dry run, the variable is empty. prefix this
variable in places where you don't want a certain action to
be performed, on dry runs.
more specifically, : does *nothing* and always returns with
zero status (success).
this results in cleaner code, and a small sloccount reduction.
Signed-off-by: Leah Rowe <leah@libreboot.org>
otherwise, due to the idiosyncratic nature of the coreboot
build system, the coreboot.rom gets wiped out.
cbutils is still handled by premake. ensure that payloads are
only inserted just after running the coreboot make command.
fixes a build issues introduced on 9020sff, previously unhandled.
Signed-off-by: Leah Rowe <leah@libreboot.org>
-d does the same as -b, except for actually building
anything! in effect, it does the same as -f (fetch)
except that the resulting variable assignments will
not be recursive (as with -f).
if -d is passed, configuration is still loaded, defconfig
files are still cycled through, and more importantly:
helper functions are still processed.
the grub, serprog and coreboot helper functions have
been modified to return early (zero status) if -d is
passed.
this behaviour will be used to integrate vendor.sh
logic in with the trees script, for cases where the
user wants to only handle vendor files. e.g.:
./update trees -b coreboot x230_12mb
this would download the files as usual, build coreboot,
with those files, and then build the payloads. but:
./update trees -d coreboot x230_12mb
this would download the files, NOT build coreboot, and
NOT build the payloads.
this change increases the sloccount a bit, but i'm relying
on the fact that the vendor.sh script already re-implements
config handling wastefully; the plan is to only use trees.
for now, simply stub the same ./vendor download command.
there is one additional benefit to doing it this way:
this method is *per-kconfig* rather than per-target.
this way, one kconfig might specify a given vendor file
that is not specified in the other. although the stub
still simply handles this per target, it's done in premake,
which means that the given .config file has been copied.
this means that when i properly re-integrate the logic
into script/trees, i'll be able to go for it per-kconfig.
the utils command has been removed, e.g.
./update trees -b coreboot utils default
the equivalent is now:
./update trees -d coreboot default
this would technically download vendor files, but here
we are specifying a target for which no kconfigs exist;
a check is also in place, to avoid running the vendor file
download logic if tree==target
the overall effect of this change is that the trees script
no longer contains any project-specific logic, except for
the crossgcc build logic.
it does include some config/data mkhelper files at the top,
for serprog and coreboot, so that those variables defined in
those files can be global, but another solution to mitigate
that will also be implemented in a future commit.
the purpose of this and other revisions (in the final push
to complete lbmk audit 6 / cbmk audit 2) is to generalise as
much logic as possible, removing various ugly hacks.
Signed-off-by: Leah Rowe <leah@libreboot.org>
stub it from the trees script. the way it works now,
there is less code in the build system.
./build roms
this is no longer a thing
./build roms serprog
this is also no longer a thing. instead, do:
./update trees -b coreboot targetnamehere
./update trees -b pico-serprog
./update trees -b stm32-vserprog
the old commands still works, which causes the new
commands to run
coreboot roms now appear in elf/, not bin/, as before,
but those images now contain payloads.
NOTE: to contradict the above: ./build roms is no
longer a thing, in that it's now deprecated, but
backward compatibility is present for now. it will
be removed in a future release.
./build roms list also still works! it will do:
./update trees -b coreboot list
also:
./update trees -b grub list
this is now possible too
if a target "list" is provided, for multi-tree sources,
the targets are shown.
there is another difference: seagrub roms are now seagrub_,
instead of seabios_withgrub.
seabios-only roms are no longer provided, where grub is also
enabled; only seagrub is used. the user can easily remove
the bootorder file, if they want seabios to not try grub first.
Signed-off-by: Leah Rowe <leah@libreboot.org>
Leah Rowe