coreboot.git - Coreboot firmware sources

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*	cbfstool/linux_trampoline: Fill the ACPI RSDP entry	Arthur Heymans	2022-03-09	1	-1/+13
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	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>
*	cbfstool/linux_trampoline.S: Fix up the e820 table	Arthur Heymans	2021-06-02	1	-1/+14
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	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>
*	util/: Replace GPLv2 boiler plate with SPDX header	Patrick Georgi	2020-05-09	1	-10/+1
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	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>
*	AUTHORS, util/: Drop individual copyright notices	Patrick Georgi	2020-05-09	1	-4/+1
\| \| \| \| \| \| \| \| \| \|	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>
*	linux_trampoline: use trampoline RAM for the GDT	Ronald G. Minnich	2018-07-18	1	-8/+7
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	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>
*	cbfstool: autocreate trampoline	Stefan Reinauer	2015-12-02	1	-0/+133
	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>