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Arthur Heymans efdcb4634a cbfstool/linux_trampoline: Fill the ACPI RSDP entry 
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>
 		2022-03-09 14:21:26 +00:00
..
bpdt_formats util/cse_serger: Replace cse_layout_regions with array of regions 2021-10-19 16:10:12 +00:00
console treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
flashmap util/cbfstool: Remove redundant endian.h include 2022-01-04 11:50:11 +00:00
fpt_formats util/cse_fpt: Add a new tool for managing Intel CSE FPT binaries 2021-10-19 16:08:03 +00:00
lz4 lz4: Fix out-of-bounds reads 2020-03-02 15:03:03 +00:00
lzma
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tests elogtool: add pytest for elogtool 2021-10-25 08:08:41 +00:00
.gitignore util/cbfstool/.gitignore: Add CSE tool executables 2021-11-29 18:44:34 +00:00
EXAMPLE
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Makefile utils/cbfstool: Fix building with `make test-tools` 2022-02-27 18:29:24 +00:00
Makefile.inc Revert "util/cbfstool: Port elogtool to libflashrom" 2022-02-26 01:24:17 +00:00
ProcessorBind.h util: Use SPDX headers 2020-05-11 19:38:40 +00:00
amdcompress.c util/cbfstool/amdcompress: fix argument requirement 2020-11-15 16:49:30 +00:00
cbfs-mkpayload.c util/cbfstool: Add support for ARM64 UefiPayload 2021-10-04 02:31:01 +00:00
cbfs-mkstage.c util/cbfstool: Replace swab.h with commonlib/bsd/sysincludes.h 2022-01-10 21:32:34 +00:00
cbfs-payload-linux.c cbfstool: Use cbfs_serialized.h and standard vboot helpers 2020-12-03 00:00:33 +00:00
cbfs.h util/cbfstool: Do minor fixes 2022-01-12 16:15:09 +00:00
cbfs_glue.h cbfstool: Support CONFIG_CBFS_VERIFICATION and metadata hash anchor 2021-03-13 04:16:20 +00:00
cbfs_image.c util/cbfstool: Do minor fixes 2022-01-12 16:15:09 +00:00
cbfs_image.h cbfstool: Hide hash printing behind -v and add to parseable output 2020-12-03 00:08:03 +00:00
cbfs_sections.c util/: Replace GPLv2 boiler plate with SPDX header 2020-05-09 21:22:08 +00:00
cbfs_sections.h cbfstool: Support CONFIG_CBFS_VERIFICATION and metadata hash anchor 2021-03-13 04:16:20 +00:00
cbfscomptool.c cbfstool: Use cbfs_serialized.h and standard vboot helpers 2020-12-03 00:00:33 +00:00
cbfstool.c commonlib/bsd: Remove cb_err_t 2022-03-09 02:18:21 +00:00
coff.h util/cbfstool: Add support for ARM64 UefiPayload 2021-10-04 02:31:01 +00:00
common.c util/cbfstool: Replace swab.h with commonlib/bsd/sysincludes.h 2022-01-10 21:32:34 +00:00
common.h util/cbfstool: Replace swab.h with commonlib/bsd/sysincludes.h 2022-01-10 21:32:34 +00:00
compress.c cbfstool: Use cbfs_serialized.h and standard vboot helpers 2020-12-03 00:00:33 +00:00
cse_fpt.c util/cse*: Add cse_helpers.{c,h} 2021-10-19 16:08:45 +00:00
cse_fpt.h util/cse*: Add cse_helpers.{c,h} 2021-10-19 16:08:45 +00:00
cse_helpers.c util/cse*: Add cse_helpers.{c,h} 2021-10-19 16:08:45 +00:00
cse_helpers.h util/cse*: Add cse_helpers.{c,h} 2021-10-19 16:08:45 +00:00
cse_serger.c util/cse_serger: Add command `create-cse-region` 2021-10-19 16:32:24 +00:00
cse_serger.h util/cse_serger: Replace cse_layout_regions with array of regions 2021-10-19 16:10:12 +00:00
default-x86.fmd drivers/vpd: Add VPD region to default FMAP when selected 2021-01-04 23:12:35 +00:00
default.fmd
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description.md
…
elf.h cbfstool: Add support for platform "fixups" when modifying bootblock 2021-03-13 04:17:35 +00:00
elfheaders.c util/: Replace GPLv2 boiler plate with SPDX header 2020-05-09 21:22:08 +00:00
elfparsing.h util/: Replace GPLv2 boiler plate with SPDX header 2020-05-09 21:22:08 +00:00
elogtool.c Revert "util/cbfstool: Port elogtool to libflashrom" 2022-02-26 01:24:17 +00:00
eventlog.c eventlog: Add a log type for Chrome OS diagnostics 2021-11-22 14:59:37 +00:00
eventlog.h elogtool: add "clear" command 2021-09-10 22:53:05 +00:00
fdt.h treewide: replace GPLv2 long form headers with SPDX header 2020-05-06 22:20:57 +00:00
fit.c util/cbfstool/fit.c: Fix getting the topswap table 2021-05-27 14:38:34 +00:00
fit.h util/ifittool: Add an option to set the FIT pointer a CBFS file 2021-03-19 11:22:55 +00:00
flashmap_tests.c util/: Replace GPLv2 boiler plate with SPDX header 2020-05-09 21:22:08 +00:00
fmap_from_fmd.c util/: Replace GPLv2 boiler plate with SPDX header 2020-05-09 21:22:08 +00:00
fmap_from_fmd.h util/: Replace GPLv2 boiler plate with SPDX header 2020-05-09 21:22:08 +00:00
fmaptool.c util/cbfstool/fmaptool: Generate list of terminal sections 2020-12-08 18:59:05 +00:00
fmd.c util/: Replace GPLv2 boiler plate with SPDX header 2020-05-09 21:22:08 +00:00
fmd.h util/cbfstool/fmd: make flashmap_flags bitfield struct elements unsigned 2020-09-23 13:39:14 +00:00
fmd_parser.c_shipped
…
fmd_parser.h_shipped
…
fmd_parser.y util/: Replace GPLv2 boiler plate with SPDX header 2020-05-09 21:22:08 +00:00
fmd_scanner.c_shipped treewide: Remove trailing whitespace 2021-02-17 17:30:05 +00:00
fmd_scanner.h_shipped treewide: Remove trailing whitespace 2021-02-17 17:30:05 +00:00
fmd_scanner.l util/: Replace GPLv2 boiler plate with SPDX header 2020-05-09 21:22:08 +00:00
fv.h util/cbftool: Fix the bug in parsing Uefipayload with extended header 2021-09-02 06:07:08 +00:00
ifittool.c util/cbfstool: Replace swab.h with commonlib/bsd/sysincludes.h 2022-01-10 21:32:34 +00:00
ifwitool.c util/: Replace GPLv2 boiler plate with SPDX header 2020-05-09 21:22:08 +00:00
linux.h treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
linux_trampoline.S cbfstool/linux_trampoline: Fill the ACPI RSDP entry 2022-03-09 14:21:26 +00:00
linux_trampoline.c cbfstool/linux_trampoline: Fill the ACPI RSDP entry 2022-03-09 14:21:26 +00:00
linux_trampoline.h util/cbfstool/linux_trampoline.h: Fix typo in comment 2021-06-04 12:35:14 +00:00
option.h util/: Replace GPLv2 boiler plate with SPDX header 2020-05-09 21:22:08 +00:00
partitioned_file.c util/cbfstool: unbreak compilation on FreeBSD 2021-01-13 12:07:17 +00:00
partitioned_file.h util/: Replace GPLv2 boiler plate with SPDX header 2020-05-09 21:22:08 +00:00
platform_fixups.c cbfstool: Add support for platform "fixups" when modifying bootblock 2021-03-13 04:17:35 +00:00
rmodtool.c util/: Replace GPLv2 boiler plate with SPDX header 2020-05-09 21:22:08 +00:00
rmodule.c util/cbfstool/rmodule: Omit undefined extern symbols from reloc table 2021-10-20 15:56:28 +00:00
rmodule.h rmodtool: Make memlayout symbols absolute and do not relocate them 2021-02-18 02:32:06 +00:00
xdr.c util/: Replace GPLv2 boiler plate with SPDX header 2020-05-09 21:22:08 +00:00