BUILD_MIN_BIOSTABLE reserves space in the f-segment. Some data
structures -- for example disk drives known to seabios -- must be
stored there, so the space available here limits the number of
devices seabios is able to manage.
This patch sets BUILD_MIN_BIOSTABLE to 8k for bios images being 256k or
larger in size. 32bit code is moved off in that case, so we have more
room in the f-segment then.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add a script to remove the ET_EXEC flag from the 16bit and "32bit
segmented" intermediate objects. This avoids build failures with some
linkers that will not allow linking these objects again.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Add --always flag to "git describe" command to get a build identifier
even if one checks out the repo with a depth parameter that prunes out
the last tagged version.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Recent versions of gcc will sometimes place conditional checks in the
code prior to setting up the function's stack frame. Handle this case
correctly.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Some linkers verify that sections have a start address that is aligned
with the minimum alignment of that section. Add extra padding to the
".text" section to ensure it is always aligned with the maximum
alignment of any section placed in ".text".
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reported by: Ed Maste <emaste@FreeBSD.org>
Fixes the following build error:
Building ld scripts
Traceback (most recent call last):
File "./scripts/buildversion.py", line 134, in <module>
main()
File "./scripts/buildversion.py", line 114, in main
cleanbuild, toolstr = tool_versions(options.tools)
File "./scripts/buildversion.py", line 90, in tool_versions
vers[isbinutils] = "mixed"
NameError: global name 'vers' is not defined
Makefile:160: recipe for target 'out/romlayout16.lds' failed
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Add a comment to the top of the generated file indicating that is is
an automatically generated file. Compress output so that up to eight
hex values are placed on a single line.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Don't require python2.7 in buildversion.py. Also, ignore only those
exceptions that are known to be possible.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
If building from an official tarball and EXTRAVERSION info is
provided, then consider the build to be "clean" (don't include
hostname/build timestamp). This is done on the expectation that
EXTRAVERSION will have enough information to allow developers to find
the builder and build environment should a defect be reported, and
therefore the hostname/timestamp is not necessary.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
There is some variation in version strings between various tool chain
builds. Make the version tool scan more permissive to attempt to
handle these variations.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
If the build environment looks "clean" then don't add the build
hostname or build time to the version string. This makes the default
build string reproducible across builds.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Convert the script to generate the build version from a shell script
to a python script.
Remove the ability to override the version at build time via "make
VERSION=xyz". Replace it with ability to add extra version
information at build time via "make EXTRAVERSION=xyz".
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Add a build option to explicitly set the version information compiled
into the seabios and seavgabios binaries. This may assist in
reproducible builds or to better link builds to distribution packages.
If the new "VERSION=" parameter is not provided then the default build
version remains unchanged.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
I've been successfully using SeaBIOS as secondary bootloader. In more details
I have GRUB2-as-payload in flash together with coreboot. SeaBIOS binary is on
the HDD and loaded by GRUB when needed. This has an unfortunate consequence
that I have to keep vga oprom in flash even if usually I boot without it. This
patches makes bios.bin.elf multiboot executable with files passed as modules.
Example:
menuentry "SeaBIOS (mb)" --unrestricted {
root=ahci0,2
multiboot /bios.bin.elf
module /vgabios_x230.rom name=pci8086,0166.rom
}
the parameter name= specifies under which name SeaBIOS will see it.
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Emulate the "leal" instruction so that the vgabios can run on older
versions of x86emu. (This removes the previous "leal" trap.)
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Replace the six-tuple storing information on each parsed function with
a class. This makes the code more readable.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Automatically close and open the pipe if it closes. Also, better
document that the -f option is for pipes.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Add support for a FUNCFSEG macro that will force a "32bit flat" C
function to be located in the f-segment. This is useful for 32bit
code with inline assembler that thunks to 16bit mode.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Update kconfig (from Linux v3.13) to the latest version (Linux v3.16).
This copies kconfig from Linux with only the changes necessary to work
with the SeaBIOS build (the equivalent of the earlier SeaBIOS 0da7bfdf
commit) and the changes necessary to always emit symbols (SeaBIOS
b623e7c5 commit).
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Update the layoutrom.py build script so that fixed address sections
can come from the 32bit compiled C code. Update the C code so that
all VAR16FIXED variables instead use the new VARFSEGFIXED which is
defined in 32bit mode.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
A number of fields were exported from the layout info that weren't
used. Don't bother exporting them.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
The 'category' really determines the memory location while the
'fileid' determines which link stage the section is in. So, use
'fileid' when writing the linker scripts.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Set an appropriate elf entry point (entry_elf, entry_csm,
reset_vector) for each type of build (coreboot, csm, qemu). Use that
entry point when determining which sections to keep.
Also, remove the '.export.' mechanism to keep a section in the final
binary - it is no longer used.
This allows the build to slightly reduce the overall size as entry_elf
is no longer needed on non-coreboot builds and entry_csm is no longer
needed on non-csm builds.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Eliminate the per-section 'keep' variable - the list of sections that
will be emitted is sufficient to track that state.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Avoid using chr() as this produces unicode strings on python3. Make
sure to only use ord() on slices as the python3 bytearray type returns
an integer on a non-slice array access.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Update kconfig (from Linux v3.11-rc6) to the latest version (Linux
v3.13).
This copyies kconfig from Linux with only the changes necessary to
work with the SeaBIOS build (the equivalent of the earlier SeaBIOS
0da7bfdf commit) and the changes necessary to always emit symbols
(SeaBIOS b623e7c5 commit).
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor