coreboot.git - my copy of coreboot

Age	Commit message (Collapse)	Author
2023-08-03	linux_trampoline: Handle 64-bit framebuffer addresses	Nico Huber
	To support full 64-bit addresses, there is a new field `ext_lfb_base` since Linux 4.1. It is unclear, however, how a loader is supposed to know if the kernel is compatible with this. Filling these previously reserved bits doesn't hurt, but an old kernel would probably ignore them and not know that it's handling a clipped, invalid address. So we play safe, and only allow 64-bit addresses for kernels after the 2.15 version bump of the boot protocol. Change-Id: Ib20184cf207f092062a91ac3e6aa819b956efd33 Signed-off-by: Nico Huber <nico.h@gmx.de> Co-authored-by: Bill XIE <persmule@hardenedlinux.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/76479 Reviewed-by: Bill XIE <persmule@hardenedlinux.org> Reviewed-by: Tim Wawrzynczak <inforichland@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2023-08-01	linux_trampoline: Handle coreboot framebuffer	Nico Huber
	Translate the coreboot framebuffer info from coreboot tables to the Linux zero page. Tested in QEMU/Q35 with a kernel w/ efifb enabled. Change-Id: I2447b2366df8dd8ffe741c943de544d8b4d02dff Signed-off-by: Nico Huber <nico.h@gmx.de> Co-authored-by: Bill XIE <persmule@hardenedlinux.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/76431 Reviewed-by: Paul Menzel <paulepanter@mailbox.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <inforichland@gmail.com> Reviewed-by: Samuel Holland <samuel@sholland.org> Reviewed-by: Bill XIE <persmule@hardenedlinux.org>
2022-03-09	cbfstool/linux_trampoline: Fill the ACPI RSDP entry	Arthur Heymans
	With LinuxBoot Linux relied on the legacy method of fetching the RSDP pointer to get ACPI. This uses a more modern approach available since 2018 on the Linux kernel, which involves filling in the zero page. This method takes precedence over any other method of fetching the RSDP in Linux (UEFI, Kexec, Legacy/BIOS). Some UEFI zealots are threatening that legacy code will be removed from Linux so it's best to already adapt to that possibility. Tested on Qemu: - With qemu the RSDP is always in the EBDA, so checking if Linux uses the provided pointer is better done with a forced bad entry - With a fake bad pointer Linux correctly does not find RDSP Change-Id: I688b94608b03b0177c42d2834c7e3beb802ae686 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/62574 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2021-06-02	cbfstool/linux_trampoline.S: Fix up the e820 table	Arthur Heymans
	The e820 type don't fully match the LB_TAG_MEMORY types, so change all unknown types to e820 to '2', reserved memory. TESTED with Linuxboot: e820 now shows the CBMEM region as reserved. Change-Id: Ie0e41c66e002919e41590327afe0f543e0037369 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55074 Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com> Reviewed-by: Rocky Phagura Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-05-09	util/: Replace GPLv2 boiler plate with SPDX header	Patrick Georgi
	Used commands: perl -i -p0e 's\|\/\[\s].is free software[:;][\s]you[\s]can[\s]redistribute[\s]it[\s]and\/or[\s]modify[\s]it[\s]under[\s]the[\s]terms[\s]of[\s]the[\s]GNU[\s]General[\s]Public[\s]License[\s]as[\s]published[\s]by[\s]the[\s]Free[\s]Software[\s]Foundation[;,][\s]version[\s]2[\s]of[\s]the[\s]License.[\s]This[\s]program[\s]is[\s]distributed[\s]in[\s]the[\s]hope[\s]that[\s]it[\s]will[\s]be[\s]useful,[\s]but[\s]WITHOUT[\s]ANY[\s]WARRANTY;[\s]without[\s]even[\s]the[\s]implied[\s]warranty[\s]of[\s]MERCHANTABILITY[\s]or[\s]FITNESS[\s]FOR[\s]A[\s]PARTICULAR[\s]PURPOSE.[\s]See[\s]the[\s]GNU[\s]General[\s]Public[\s]License[\s]for[\s]more[\s]details.[\s]\\/\|/ SPDX-License-Identifier: GPL-2.0-only /\|' $(cat filelist) perl -i -p0e 's\|This[\s]program[\s]is[\s]free[\s]software[:;][\s]you[\s]can[\s]redistribute[\s]it[\s]and/or[\s]modify[\s]it[\s]under[\s]the[\s]terms[\s]of[\s]the[\s]GNU[\s]General[\s]Public[\s]License[\s]as[\s]published[\s]by[\s]the[\s]Free[\s]Software[\s]Foundation[;,][\s]either[\s]version[\s]2[\s]of[\s]the[\s]License,[\s]or[\s].at[\s]your[\s]option.[\s]any[\s]later[\s]version.[\s]This[\s]program[\s]is[\s]distributed[\s]in[\s]the[\s]hope[\s]that[\s]it[\s]will[\s]be[\s]useful,[\s]but[\s]WITHOUT[\s]ANY[\s]WARRANTY;[\s]without[\s]even[\s]the[\s]implied[\s]warranty[\s]of[\s]MERCHANTABILITY[\s]or[\s]FITNESS[\s]FOR[\s]A[\s]PARTICULAR[\s]PURPOSE.[\s]See[\s]the[\s]GNU[\s]General[\s]Public[\s]License[\s]for[\s]more[\s]details.[\s]\\/\|/ SPDX-License-Identifier: GPL-2.0-or-later /\|' $(cat filelist) perl -i -p0e 's\|\/\[\s].This[\s#]program[\s#]is[\s#]free[\s#]software[;:,][\s#]you[\s#]can[\s#]redistribute[\s#]it[\s#]and/or[\s#]modify[\s#]it[\s#]under[\s#]the[\s#]terms[\s#]of[\s#]the[\s#]GNU[\s#]General[\s#]Public[\s#]License[\s#]as[\s#]published[\s#]by[\s#]the[\s#]Free[\s#]Software[\s#]Foundation[;:,][\s#]either[\s#]version[\s#]3[\s#]of[\s#]the[\s#]License[;:,][\s#]or[\s#].at[\s#]your[\s#]option.[\s#]any[\s#]later[\s#]version.[\s#]This[\s#]program[\s#]is[\s#]distributed[\s#]in[\s#]the[\s#]hope[\s#]that[\s#]it[\s#]will[\s#]be[\s#]useful[;:,][\s#]but[\s#]WITHOUT[\s#]ANY[\s#]WARRANTY[;:,][\s#]without[\s#]even[\s#]the[\s#]implied[\s#]warranty[\s#]of[\s#]MERCHANTABILITY[\s#]or[\s#]FITNESS[\s#]FOR[\s#]A[\s#]PARTICULAR[\s#]PURPOSE.[\s#]See[\s#]the[\s#]GNU[\s#]General[\s#]Public[\s#]License[\s#]for[\s#]more[\s#]details.[\s]\\/\|/ SPDX-License-Identifier: GPL-3.0-or-later /\|' $(cat filelist) perl -i -p0e 's\|(\#\#)[\w].is free software[:;][\#\s]you[\#\s]can[\#\s]redistribute[\#\s]it[\#\s]and\/or[\#\s]modify[\#\s]it[\s\#]under[\s \#]the[\s\#]terms[\s\#]of[\s\#]the[\s\#]GNU[\s\#]General[\s\#]Public[\s\#]License[\s\#]as[\s\#]published[\s\#]by[\s\#]the[\s\#]Free[\s\#]Software[\s\#]Foundation[;,][\s\#]version[\s\#]2[\s\#]of[\s\#]the[\s\#]License.[\s\#]This[\s\#]program[\s\#]is[\s\#]distributed[\s\#]in[\s\#]the[\s\#]hope[\s\#]that[\s\#]it[\s\#]will[\#\s]be[\#\s]useful,[\#\s]but[\#\s]WITHOUT[\#\s]ANY[\#\s]WARRANTY;[\#\s]without[\#\s]even[\#\s]the[\#\s]implied[\#\s]warranty[\#\s]of[\#\s]MERCHANTABILITY[\#\s]or[\#\s]FITNESS[\#\s]FOR[\#\s]A[\#\s]PARTICULAR[\#\s]PURPOSE.[\#\s]See[\#\s]the[\#\s]GNU[\#\s]General[\#\s]Public[\#\s]License[\#\s]for[\#\s]more[\#\s]details.\s(# \n)\|\1 SPDX-License-Identifier: GPL-2.0-only\n\n\|' $(cat filelist) perl -i -p0e 's\|(\#\#)[\w].is free software[:;][\s]you[\s]can[\s]redistribute[\s]it[\s]and\/or[\s]modify[\s]it[\s]under[\s]the[\s]terms[\s]of[\s]the[\s]GNU[\s]General[\s]Public[\s]License[\s]as[\s]published[\s]by[\s]the[\s]Free[\s]Software[\s]Foundation[;,][\s]version[\s]2[\s]of[\s]the[\s]License.[\s]This[\s]program[\s]is[\s]distributed[\s]in[\s]the[\s]hope[\s]that[\s]it[\s]will[\s]be[\s]useful,[\s]but[\s]WITHOUT[\s]ANY[\s]WARRANTY;[\s]without[\s]even[\s]the[\s]implied[\s]warranty[\s]of[\s]MERCHANTABILITY[\s]or[\s]FITNESS[\s]FOR[\s]A[\s]PARTICULAR[\s]PURPOSE.[\s]See[\s]the[\s]GNU[\s]General[\s]Public[\s]License[\s]for[\s]more[\s]details.\s(#* \n)\|\1 SPDX-License-Identifier: GPL-2.0-only\n\n\|' $(cat filelist) Change-Id: I1008a63b804f355a916221ac994701d7584f60ff Signed-off-by: Patrick Georgi <pgeorgi@google.com> Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41177 Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-05-09	AUTHORS, util/: Drop individual copyright notices	Patrick Georgi
	We have the git history which is a more reliable librarian. Change-Id: Idbcc5ceeb33804204e56d62491cb58146f7c9f37 Signed-off-by: Patrick Georgi <pgeorgi@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41175 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: ron minnich <rminnich@gmail.com>
2018-07-18	linux_trampoline: use trampoline RAM for the GDT	Ronald G. Minnich
	The linux trampoline was modifying the existing GDT to add the 0x10 and 0x18 descriptors for Linux. This will not work when the existing GDT is in ROM. Change the code to set up a new GDT in what we know to be RAM. Tested by booting a linux payload. The main reason this works is that Linux almost immediately loads its own GDT and then segment registers. This GDT is a very temporary bridge. Note that none of this change used to be necessary; the coreboot GDT was originally compatible with Linux (ca 2000); then Linux changed. Change-Id: I13990052fbfd6a500adab8a2db8f7aead1d24fa6 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: https://review.coreboot.org/27529 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-12-02	cbfstool: autocreate trampoline	Stefan Reinauer
	Add the code necessary to create the linux trampoline blob. Don't enforce this for the in-coreboot build or use objcopy to produce linux_trampoline.o as it is a bit trickier to get all the details right than I had hoped: - you have to know the elf architecture of the host machine - you might have to have more tools (xxd, perl, etc) installed Change-Id: I9b7877c58d90f9fb21d16e0061a31e19fffa2470 Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: https://review.coreboot.org/12505 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>