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Change-Id: I9ed1a82fcd3fc29124ddc406592bd45dc84d4628
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82666
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Yidi Lin <yidilin@google.com>
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<stdio.h> header is used for input/output operations (such as printf,
scanf, fopen, etc.). Although some input/output functions can manipulate
strings, they do not need to directly include <string.h> because they
are declared independently.
Change-Id: Ibe2a4ff6f68843a6d99cfdfe182cf2dd922802aa
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82665
Reviewed-by: Yidi Lin <yidilin@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Change-Id: I46f799ad255993ac42dab11b5c1d2608daa52b42
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82645
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Both acpi_create_madt_sci_override and acpi_sci_int have special
handling for the ACPI_NO_PCAT_8259 case, but those cases weren't exactly
obvious, so add a comment with the reason for that.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ia6dcf59d5ab9226c61e9c4af95a73a07771b71d1
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82643
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Implement the two architectural tables: processor and cache.
Note that SoC/board code should override core-thread count
and, for spec-compliance, create CBMEM_ID_MEMINFO.
Change-Id: Iedae0f26f168bd6d3af866e35d9d39ddb01abc15
Signed-off-by: Benjamin Doron <benjamin.doron@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78285
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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Implement support for generating an SMC to call a trusted monitor. Some
functions are provided to read the SoC ID from the monitor, if
supported.
Change-Id: I158db0b971aba722b3995d52162146aa406d1644
Signed-off-by: Benjamin Doron <benjamin.doron@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78284
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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This patch removes all instances of the `protected_mode_jump` API and
its associated header file.
The API is no longer used by any code within the tree.
BUG=b:332759882
TEST=Built and booted 64-bit coreboot with 32-bit payload successfully.
Change-Id: I3eb31b09c92512338ccc540f60289960bd6bf439
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82372
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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The payload execution process has been updated to utilize
protected_mode_call_1arg in order to guarantee proper handling of
function parameters.
The previous use of protected_mode_jump with a "jmp" instruction did
not allow for proper stack setup for argument passing, as the calling
convention was not aligned with the System V ABI calling convention.
This patch ensures that calling into the libpayload entry point using
protected mode is now aligned with the System V ABI calling convention.
This resolves an issue where retrieving the "pointer to coreboot tables"
from within the libpayload entry point was failing due to incorrect
argument passing.
BUG=b:332759882
TEST=Built and booted 64-bit coreboot with 32-bit payload successfully.
Change-Id: Ibd522544ad1e9deed6a11015b0c0e95265bda8eb
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82294
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
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TF-A migrates the default choice of linker to GCC in order to enable
LTO. Change BL31_LDFLAGS from `--emit-relocs` to '-Wl,--emit-relocs', so
that GCC is able to pass `--emit-relocs` to the linker.
[1]: https://review.trustedfirmware.org/c/26703
BUG=b:338420310
TEST=emerge-geralt coreboot
TEST=./util/abuild/abuild -t google/geralt -b geralt -a
TEST=./util/abuild/abuild -t google/oak -b elm -a
Change-Id: I65b96aaa052138592a0f57230e1140a1bb2f07ac
Signed-off-by: Yidi Lin <yidilin@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82189
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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This change is for upcoming arm-trusted uprev commit.
TF-A refactors the toolchain detection in [1][2]. After that `AR`,
`CC`, `LD` and other toolchain variables have precedence over
`CROSS_COMPILE`.
Since ChromeOS build system also sets those toolchain variables when
building coreboot, it results that TF-A uses CrOS GCC instead of
coreboot SDK. It needs to unset those variables in order to make
`CROSS_COMPILE` effective.
TF-A upstream changes the default linker from BFD to GCC in [3].
Therefore, temporarily overriding LD as $(LD_arm64} to fix the below
build error.
aarch64-elf-gcc: error: unrecognized command-line option '--emit-relocs'
In addition, TF-A wrapped LD with single quotes to solve Windows path
issue[4]. On MT8173 platform, `--fix-cortex-a53-843419` is appended to
$(LD_arm64} for ERRATA_A53_843419. It results in the below build error.
/bin/sh: 1: --fix-cortex-a53-843419: not found
Since `--fix-cortex-a53-843419` is never passed to TF-A, simply extract
the LD command from $(LD_arm64) by $(word 1, $(LD_arm64)).
[1]: https://review.trustedfirmware.org/c/24921
[2]: https://review.trustedfirmware.org/c/25333
[3]: https://review.trustedfirmware.org/c/26703
[4]: https://review.trustedfirmware.org/c/26737
BUG=b:338420310
TEST=emerge-geralt coreboot
TEST=./util/abuild/abuild -t google/geralt -b geralt -a -x
TEST=./util/abuild/abuild -t google/oak -b elm -a -x
TEST=./util/abuild/abuild -t google/cherry -x -a
Change-Id: Ieac9f96e81e574b87e20cd2df335c36abcb8bb5c
Signed-off-by: Yidi Lin <yidilin@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82187
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Eric Lai <ericllai@google.com>
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Use better alignment attribute macro and add missing identifier names
for function definition arguments.
Change-Id: I1c5c33fc9210f068ff88c8d981f1a1c739890c9c
Signed-off-by: Integral <integral@member.fsf.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82050
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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This patch extends the cpu_get_cache_info function, so that
additional information like size of cache lines can be retrieved.
Patch was tested against the qemu-sbsa mainboard.
Change-Id: If6fe731dc67ffeaff9344d2bd2627f45185c27de
Signed-off-by: David Milosevic <David.Milosevic@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79106
Reviewed-by: Benjamin Doron <benjamin.doron00@gmail.com>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
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Currently, arch/arm64 requires coreboot to run on EL3 due
to EL3 register access. This might be an issue when, for example,
one boots into TF-A first and drops into EL2 for coreboot afterwards.
This patch aims at making arch/arm64 more versatile by removing the
current EL3 constraint and allowing arm64 coreboot to run on EL1,
EL2 and EL3.
The strategy here, is to add a Kconfig option (ARM64_CURRENT_EL) which
lets us specify coreboot's EL upon entry. Based on that, we access the
appropriate ELx registers. So, for example, when running coreboot on
EL1, we would not access vbar_el3 or vbar_el2 but instead vbar_el1.
This way, we don't generate faults when accessing higher-EL registers.
Currently only tested on the qemu-aarch64 target. Exceptions were
tested by enabling FATAL_ASSERTS.
Signed-off-by: David Milosevic <David.Milosevic@9elements.com>
Change-Id: Iae1c57f0846c8d0585384f7e54102a837e701e7e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74798
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-by: ron minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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Add Kconfig option `X86_BOOTBLOCK_EXTRA_PROGRAM_SZ` to reserve extra
space, avoiding overlap between .text and .init sections when using
older linkers (binutils 2.3x). Default is 1024 bytes (1 KiB) for
ChromeOS, 0 otherwise.
BUG=b:332445618
TEST=Built and booted google/rex (32-bit/64-bit).
Change-Id: I019bf6896d84b2a84dff6f22323f0f446c0740b5
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81886
Reviewed-by: Dinesh Gehlot <digehlot@google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
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<device/device.h> is supposed to provide <device/{path,resource}.h>
Change-Id: I2ef82c8fe30b1c1399a9f85c1734ce8ba16a1f88
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81830
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
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Change-Id: If8be8dc26f2729f55dc6716e6d01e2b801d79e44
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81829
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
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Change-Id: Ib1a8fc50217c84e835080c70269ff50fc001392c
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81811
Reviewed-by: Varshit Pandya <pandyavarshit@gmail.com>
Reviewed-by: Jonathon Hall <jonathon.hall@puri.sm>
Reviewed-by: Yidi Lin <yidilin@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Starting with version 18 LLVM puts code and data generated with
-ffunction-section -mcmodel=large inside sections with an 'l' prefix.
Change-Id: Ib755673dfa9e71172bbef0a5aec075154c89a97b
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81675
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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commit b7832de026 (x86: Add .data section support for pre-memory stages)
added a data section to the bootblock. This needs to be accounted for in
the linker script.
Change-Id: I39abe499e5e9edbdacb1697c0a0fc347af3ef9c4
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81434
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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GDB debugging is not implemented with x86 long mode.
Change-Id: Icaf7d0763829d5badf73d38bb8fc3d36cfe18964
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81379
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Reviewed-by: Eric Lai <ericllai@google.com>
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Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I1aacff869663e1db74cd485787d7103b9ec5602e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78448
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
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Use macros from the Linux kernel 6.5 to make the inline assembly also
compile on clang.
TEST: See that the generated code is identical on GCC and compiles on
clang.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I516033c69e62dfdb38f83285c156d5527917ad55
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78446
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
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Change-Id: I1bb4a052a4e74850660944b687c21e817eb437b2
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81453
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
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With SMM holding page tables itself, we can consider SMM support stable
and safe enough for general use.
Also update the respective documentation.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: Ifcf0a1a5097a2d7c064bb709ec0b09ebee13a47d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80338
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
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When switching back and forth between 32 to 64 bit mode, for example to
call a 32-bits FSP or to call the payload, new page tables in the
respective stage will be linked.
The advantages of this approach are:
- No need to determine a good place for page tables in CBFS that does
not overlap.
- Works with non memory mapped flash (however all coreboot targets
currently do support this)
- If later stages can use their own page tables which fits better with
the vboot RO/RW flow
A disadvantage is that it increases the stage size. This could be
improved upon by using 1G pages and generating the pages at runtime.
Note: qemu cannot have the page tables in the RO boot medium and needs
to relocate them at runtime. This is why keeping the existing code with
page tables in CBFS is done for now.
TEST: Booted to payload on google/vilbox and qemu/q35
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: Ied54b66b930187cba5fbc578a81ed5859a616562
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80337
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Testing on the unmatched shows the code no longer works completely
correctly; Linux has taken over the handling of misalignment
anyway, because handling it in firmware, with the growing
complexity of the ISA and the awkward way in which it
has to be handled, is more trouble than its worth.
Plus, we don't WANT misalignment handled, magically, in
firmware: the cost of getting it wrong is high (as I've
spent a month learning); the performance is terrible (350x
slowdown; and most toolchains now know to avoid unaligned
load/store on RISC-V anyway.
But, mostly, if alignment problems exist, *we need to know*,
and if they're handled invisibly in firmware, we don't.
The problem with invisible handling was shown a while back
in the Go toolchain: runtime had a small error, such that
many misaligned load/store were happening, and it was
not discovered for some time. Had a trap been directed
to kernel or user on misalignment, the problem would
have been known immediately, not after many months.
(The error, btw, was masking the address with 3,
not 7, to detect misalignment; an easy mistake!).
But, the coreboot code does not work any more any way,
and it's not worth fixing. Remove it.
Tested by booting Linux to runlevel 1; before,
it would hang on an alignment fault, as the
alignment code was failing (somewhere).
This takes the coreboot SBI code much closer to
revival.
Change-Id: I84a8d433ed2f50745686a8c109d101e8718f2a46
Signed-off-by: Ronald G Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81416
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Instead of using some aritmetics that sometimes works, use the largest
alignment necessary (page tables) and align downwards in the linker
script.
This fixes linking failing when linking in page tables inside the
bootblock.
This can result in a slight increase in bootblock size of at most 4096 -
512 bytes.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I78c6ba6e250ded3f04b12cd0c20b18cb653a1506
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80346
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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In order to preprocess linker scripts the target architecture needs to
be specified. With clang this needs to be set via a cli argument.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I4340681e30059d6f18a49a49937668cd3dd39ce1
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75031
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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This is just a start. We are playing catch up.
7 down, 70+ to go.
Signed-off-by: Ronald G Minnich <rminnich@gmail.com>
Change-Id: I5dac8613020e26ec74ac1c74158fc9791553693f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81294
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
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Older parts do not have the menvcfg csr.
Provide a Kconfig variable, default y, to enable it.
Check the variable in the payload code, when coreboot SBI
is used, and print out if it is enabled.
The SiFive FU540 and FU740 do not support this register;
set the variable to n for those parts.
Add constants for this new CSR.
Change-Id: I6ea302a5acd98f6941bf314da89dd003ab20b596
Signed-off-by: Ronald G Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81425
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
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Change-Id: I9b29233e75483cda6bf7723cf79632f6b04233b0
Signed-off-by: Jincheng Li <jincheng.li@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81260
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
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Change-Id: I314d726deaed30e69121126ba6834e4c7cafd090
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81299
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
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Get used to this rate of change, SBI adds one new function a month,
on average, for the last 7 years.
Signed-off-by: Ronald G Minnich <rminnich@gmail.com>
Change-Id: Iaad763464678d1921dfefdbee1e39fba2fe5585a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81286
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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Introduce a function to determine whether the number of cache sets is
a power of two. This aligns with common cache design practices that
favor power-of-two counts for efficient indexing and addressing.
BUG=b:306677879
BRANCH=firmware-rex-15709.B
TEST=Verified functionality on google/ovis and google/rex (including
a non-power-of-two Ovis configuration).
Change-Id: I819e0d1aeb4c1dbe1cdf3115b2e172588a6e8da5
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81268
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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This patch moves commonlib/stdlib.h -> commonlib/bsd/stdlib.h, since
all code is BSD licensed anyway.
It also moves some code from libpayloads stdlib.h to
commonlib/bsd/stdlib.h so that it can be shared with coreboot. This is
useful for a subsequent commit that adds devicetree.c into commonlib.
Also we don't support DMA on arm platforms in coreboot (only libpayload)
therefore `dma_malloc()` has been removed and `dma_coherent()` has been
moved to architecture specific functions. Any architecture that tries to
use `dma_coherent()` now will get a compile time error. In order to not
break current platforms like mb/google/herobrine which make use of the
commonlib/storage/sdhci.c controller which in turn uses `dma_coherent` a
stub has been added to arch/arm64/dma.c.
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I3a7ab0d1ddcc7ce9af121a61b4d4eafc9e563a8a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77969
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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PMP (Physical Memory Protection) is a feature of the RISC-V
Privileged Architecture spec, that allows defining region(s) of
the address space to be protected in a variety of ways: ranges
for M mode can be protected against access from lower privilege
levels, and M mode can be locked out of accessig to memory
reserved for lower privilege levels. Limits on Read, Write, and
Execute are allowed. In coreboot, we protect against Write and
Execute of PMP code from lower levels, but allow Reading, so as
to ease data structure access. PMP is not a security boundary,
it is an accident prevention device.
PMP is used here to protect persistent ramstage code that is
used to support SBI, e.g. printk and some data structures. It
also protects the SBI stacks. Note that there is one stack per
hart. There are 512- and 1024-hart SoC's being built today, so
the stack should be kept small.
PMP is not a general purpose protection mechanism and it is easy
to get around it. For example, S mode can stage a DMA that
overwrites all the M mode code. PMP is, rather, a way to avoid
simple accidents. It is understood that PMP depends on proper OS
behavior to implement true SBI security (personal conversation
with a RISC-V architect). Think of PMP as "Protection Minus
Protection".
PMP is also a very limited resource, as defined in the
architecture. This language is instructive: "PMP entries are
described by an 8-bit configuration register and one XLEN-bit
address register. Some PMP settings additionally use the address
register associated with the preceding PMP entry. Up to 16 PMP
entries are supported. If any PMP entries are implemented, then
all PMP CSRs must be implemented, but all PMP CSR fields are
WARL and may be hardwired to zero. PMP CSRs are only accessible
to M-mode."
In other words if you implement PMP even a little, you have to
impelement it all; but you can implement it in part by simply
returning 0 for a pmpcfg. Also, PMP address registers (pmpaddr)
don't have to implement all the bits. On a SiFive FU740, for
example, PMP only implements bits 33:0, i.e. a 34 bit address.
PMPs are just packed with all kinds of special cases. There are
no requirements that you read back what you wrote to the pmpaddr
registers. The earlier PMP code would die if the read did not
match the write, but, since pmpaddr are WARL, that was not
correct. An SoC can just decide it only does 4096-byte
granularity, on TOR PMP types, and that is your problem if you
wanted finer granulatiry. SoC's don't have to implement all the
high order bits either.
And, to reiterate, there is no requirement about which of the pmpcfg
are implemented. Implementing just pmpcfg15 is allowed.
The coreboot SBI code was written before PMP existed. In order
for coreboot SBI code to work, this patch is necessary.
With this change, a simple S-mode payload that calls SBI putchar
works:
1:
li a7, 1
li a0, 48
ecall
j 1b
Without this change, it will not work.
Getting this to build on RV32 required changes to the API,
as it was incorrect. In RV32, PMP entries are 34 bits.
Hence, the setup_pmp needed to accept u64. So,
uinptr_t can not be used, as on 32 bits they are
only 32 bit numbers. The internal API uses uintptr_t,
but the exported API uses u64, so external code
does not have to think about right shifts on base
and size.
Errors are detected: an error in base and size will result
in a BIOS_EMERG print, but not a panic.
Boots not bricks if possible.
There are small changes to the internal API to reduce
stack pressure: there's no need to have two pmpcfg_t
on the stack when one will do.
TEST: Linux now boots partly on the SiFive unmatched. There are
changes in flight on the coreboot SBI that will allow Linux to
boot further, but they are out of scope for this patch.
Currently, clk_ignore_unused is required, this requires a
separate patch.
Change-Id: I6edce139d340783148cbb446cde004ba96e67944
Signed-off-by: Ronald G Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81153
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Hug <philipp@hug.cx>
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typedefs violate our coding-style
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: Id51eda53b6b53ed2cc66c0339c03c855c12c1bd8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81124
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Hug <philipp@hug.cx>
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Change-Id: Ia1f97b82e329f6358061072f98278cf56b503618
Signed-off-by: Xiang Wang <merle@hardenedlinux.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68841
Reviewed-by: Philipp Hug <philipp@hug.cx>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: ron minnich <rminnich@gmail.com>
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ARCH_RISCV_PMP should be CONFIG_ARCH_RISCV_PMP. Rename it.
Change-Id: I2a22acae5cd9f30e01c491653bf7fc7b7765d815
Signed-off-by: Ronald G Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81086
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Starting with Intel CPX there is a bug in the reference code during
the Pipe init. This code synchronises the CAR between sockets in FSP-M.
This code implicitly assumes that the FSP heap is right above the
RC heap, where both of them are located at the bottom part of CAR.
Work around this issue by making that implicit assumption done in FSP
explicit in the coreboot linker script and allocation.
TEST=intel/archercity CRB
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Signed-off-by: Shuo Liu <shuo.liu@intel.com>
Change-Id: I38a4f4b7470556e528a1672044c31f8bd92887d4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80579
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Shuo Liu <shuo.liu@intel.com>
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Current version of qemu raise an exception when accessing invalid
memory. Modify the probing code to temporary redirect the exception
handler like on ARM platform.
Also move saving of the stack frame out to trap_util.S to have all at
the same place for a future rewrite.
TEST=boots to ramstage
Change-Id: I25860f688c7546714f6fdbce8c8f96da6400813c
Signed-off-by: Philipp Hug <philipp@hug.cx>
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36486
Reviewed-by: ron minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Change-Id: Iced69e0bce345748a43eb1c14bf17a683e26ba60
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81020
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
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This also sets a good default in arch and vboot to have a separate
romstage when it makes sense.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I09ab5f8c79917bf93c9d5c9dfd157c652478b186
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80580
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Use uintptr_t for the IOAPIC base parameter of the various IOAPIC-
related functions to avoid needing type casts in the callers. This also
allows dropping the VIO_APIC_VADDR define and consistently use the
IO_APIC_ADDR define instead.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I912943e923ff092708e90138caa5e1daf269a69f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80358
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
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1. romstage.S should only be included if we have a separate romstage
2. FW_JUMP and FW_DYNAMIC are opposing options and we only support
FW_DYNAMIC
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: Ic14fa77d2f223664b9faba048b759e03efffcde8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79952
Reviewed-by: Philipp Hug <philipp@hug.cx>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
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Change-Id: I7dd7b0b7c5fdb63fe32915b88e69313e3440b64a
Signed-off-by: Martin Roth <gaumless@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80587
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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It simply adds a comment to indicate to the reader that the
RISCV_PAYLOAD_MODE_S parameter causes OpenSBI to switch to Supervisor
mode. Otherwise it could be interpreted that coreboot switches to
Supervisor mode before starting OpenSBI (which is not the case)
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: Ib62be0c2ff59361200df4c65f9aca5f7456a0ada
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79949
Reviewed-by: ron minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Hug <philipp@hug.cx>
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It seems that we have some applications where we need to calculate a GCD
in 64 bits. Now, we could instantiate the algorithm multiple times for
different bit width combinations to be able to use the most efficient
one for each problem... but considering that the function usually only
gets called once per callsite per stage, and that software emulation of
64-bit division on 32-bit systems doesn't take *that* long either, we
would probably usually be paying more time loading the second instance
of the function than we save with faster divisions. So let's just make
things easy and always do it in 64-bit and then nobody has to spend time
thinking on which version to call.
Change-Id: I028361444c4048a0d76ba4f80c7334a9d9983c87
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80319
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yidi Lin <yidilin@google.com>
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In case printk does not work the current exception handler will print a
simple "!" to notify the developer that coreboot is actually there but
something went wrong.
The "!" can be quite confusing when it actually happens that printk does
not work. Since "!" doesn't really say much (if you don't know the
exception arm64 code) the developer (like me) can easily assume that
something went wrong while configuring clocks or baud rate of UART,
since the output seemingly does not seem to make sense.
This adds a little bit more output to assure the developer that what was
printed was actually intended to be printed. Therefore it prints
"EXCEPT" which assures the developer that this was intended output.
It also adds a comment above so that developer can more easily grep
for this message.
It has intentionally not been written as:
```
const char *msg = "\r\n!EXCPT!";
while (*msg)
__uart_tx_byte(*msg++);
```
because in this case the compiler will generate code that will place
`msg` somewhere in bootblock and the code will try to access this using
a memory address. In rare cases (if you link bootblock at the wrong
address) this memory address can be wrong and coreboot will not print
the message. Using individual calls to `__uart_tx_byte` ensures that the
compiler will generate code which directly puts the character bytes into
the argument register without referencing a variable in bootblock.
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I2f858730469fff3cae120fd7c32fec53b3d309ca
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80184
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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smp_write_ioapic is only called from smp_write_ioapic_from_hw within the
same compilation unit, so reduce its scope by making it a static
function.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I6a1bbfd50ae9d6c8ab18f478ae9bae3f8bf5e10d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80357
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
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This adds another option to tell OpenSBI which hart to use for booting.
Test: Start hifive-unmatched board and see that Hart 1 (instead of 0) is
used for running OpenSBI.
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: Id58bd6ae3b55a5ef3f1a5c97dfa07c79aa4c78d0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79948
Reviewed-by: Philipp Hug <philipp@hug.cx>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
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Back in the days of the APIC bus, the IOAPIC IDs mustn't overlap with
the LAPIC IDs (0 to CONFIG_MAX_CPUS - 1), but since the IOAPIC and LAPIC
nowadays talk to each other via the system bus, an IOAPIC ID of 0 is
valid. When set_ioapic_id gets called with an IOAPIC ID of 0, it skipped
writing the IOAPIC ID to the corresponding IOAPIC register, so the code
was relying of the register having the expected default value of the
IOAPIC IO 0 for things to work as expected. The case of the IOAPIC ID
being 0 is the most common case in coreboot, since that's what
register_new_ioapic_gsi0 will end up doing. Fix this issue by not making
the io_apic_write call conditional on ioapic_id being non-zero. The only
southbridge that doesn't call register_new_ioapic_gsi0, calls
set_ioapic_id with the IOAPIC ID 2 for which this won't cause any
changes in behavior.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ic8538f82a6b10f16eeb228669db197dc8e326ffd
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80330
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
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This patch moves the IP checksum algorithm into commonlib to prepare for
it being shared with libpayload. The current implementation is ancient
and pretty hard to read (and does some unnecessary questionable things
like the type-punning stuff which leads to suboptimal code generation),
so this reimplements it from scratch (that also helps with the
licensing).
This algorithm is prepared to take in a pre-calculated "wide" checksum
in a machine-register-sized data type which is then narrowed down to 16
bits (see RFC 1071 for why that's valid). This isn't used yet (and the
code will get optimized out), but will be used later in this patch
series for architecture-specific optimization.
Change-Id: Ic04c714c00439a17fc04a8a6e730cc2aa19b8e68
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80251
Reviewed-by: Yidi Lin <yidilin@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jakub Czapiga <czapiga@google.com>
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This renames bus to upstream and link_list to downstream.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I80a81b6b8606e450ff180add9439481ec28c2420
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78330
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
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Multiple links are unused throughout the tree and make the code more
confusing as an iteration over all busses is needed to get downstream
devices. This also not done consistently e.g. the allocator does not
care about multiple links on busses. A better way of dealing multiple
links below a device is to feature dummy devices with each their
respective bus.
This drops the sconfig capability to declare the same device multiple
times which was previously used to declare multiple links.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: Iab6fe269faef46ae77ed1ea425440cf5c7dbd49b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78328
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jincheng Li <jincheng.li@intel.com>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
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Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: Ieaf7894f49a90f562b164924cc025e3eab5a3f7f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80129
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
|
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The .inc suffix is confusing to various tools as it's not specific to
Makefiles. This means that editors don't recognize the files, and don't
open them with highlighting and any other specific editor functionality.
This issue is also seen in the release notes generation script where
Makefiles get renamed before running cloc.
Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: Ice5dadd3eaadfa9962225520a3a75b05b44518ca
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80066
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
|
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This adds an opensbi linker macro for easier integration into
memlayout.ld linker scripts.
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I4f138de685c6bfb3cdbf79d63787eb0c5aab8590
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77974
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Instead of checking if there is more than one PCI segment group and
erroring out in that case during the build, add this requirement as a
dependency to the GENERATE_MP_TABLE Kconfig option. The mpspec.c source
file only gets included in the build if GENERATE_MP_TABLE is selected.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Suggested-by: Martin Roth <gaumless@gmail.com>
Change-Id: Ie532a401ad0161890d0fb4ca2889af022d5f6b47
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79994
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
|
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Add initial support for multiple PCI segment groups. Instead of
modifying secondary in the bus struct introduce a new segment_group
struct element and keep existing common code.
Since all platforms currently only use 1 segment this is not a
functional change. On platforms that support more than 1 segment the
segment has to be set when creating the PCI domain.
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ied3313c41896362dd989ee2ab1b1bcdced840aa8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79927
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
|
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Since the inline assembly code in call_smm doesn't make it exactly
obvious how this function to call the APMC SMI handler works in detail,
add a more detailed explanation as comment.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I3566af191492ce00a3033335ff80e01c33e98e63
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79834
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
|
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Use pm_acpi_smi_cmd_port() to get the APMC trigger IO port instead of
using the hard-coded APM_CNT define. This makes sure that the correct
APMC IO port will be used even when a system doesn't use the default
APM IO port.
TEST=SMMSTORE V2 still works with the EDK2 payload on Careena
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Icb79c91cfcd75db760bd80cff7f3d0400d1f16cd
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79568
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Don't truncate upper bits in assembly code and thus allow loading
of ramstage above 4GiB.
Tested on qemu with cbmem_top set to TOUUD.
Change-Id: Ifc9b45f69d0b7534b2faacaad0d099cef2667478
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Co-authored-by: Benjamin Doron <benjamin.doron@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59874
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Rename smm.h to smm_call.h to make including this file look less
ambiguous.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ia907ad92459e835feeddf7eb4743a38f99549179
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79833
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
|
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The call_smm function is currently unused and the inline assembly code
for more or less the same functionality in drivers/smmstore/ramstage is
both a bit easier to understand since it uses the register names in the
'outb' instruction instead of positional arguments, and also tells the
compiler that this piece of code might change global memory. Having too
much in the clobber list might only have some performance impact, which
should however be negligible compared to the SMI handler being called,
while missing something in the clobber list might cause hard to debug
problems.
This is a preparation to make drivers/smmstore/ramstage use call_smm
instead of having its own inline assembly implementation for this.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I73837cab75429014897486b38a5c56f93a850f96
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79827
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
|
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Don't truncate upper bits in assembly code and thus allow loading
of postcar stage above 4GiB.
Tested on qemu with cbmem_top set to TOUUD.
Change-Id: I42d1086f1220e44076ccf613244fc3c6d804805b
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Benjamin Doron <benjamin.doron@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79162
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
|
|
Instead of hard-coding the APMC SMI command IO port in the FADT, call
pm_acpi_smi_cmd_port() to get the APMC SMI command IO port.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I731c780bc6db7e7fd59688340bab1da86fc93c11
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79565
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Introduce the HAVE_CONFIGURABLE_APMC_SMI_PORT Kconfig option that when
not selected will result in a default implementation of
pm_acpi_smi_cmd_port to be included in the build that returns APM_CNT.
SoCs that provide their own pm_acpi_smi_cmd_port implementation, need to
select this Kconfig option.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Iaceb61b0f2a630d7afe2e0780b6a2a9806ea62f9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79566
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
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Add a protected mode wrapper function that takes three arguments.
This is already supported by the called assembly code.
Change-Id: Ia8c91eebae17e4ca27e391454c2d130a71c4c9f3
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79756
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
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Drop the first argument specifying the number of arguments pushed
to the stack. Instead always push the 3 arguments to stack and use
the first one as function pointer to call while in protected mode.
While on it add more comments and simplify register restore code.
Tested:
- On qemu can call x86_32 function and pass argument and return
value.
- Booted Lenovo X220 in x86_64 mode using x86_32 MRC.
Change-Id: I30809453a1800ba3c0df60acd7eca778841c520f
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79752
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Use the `VB2_FIRMWARE_WORKBUF_RECOMMENDED_SIZE' constant defined by
the vboot project instead of hard-coding the buffer size.
Change-Id: I6039fc7cf2439535ca88663806bdcf99ad5089b0
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79288
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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The physical address size of the System-on-Chip (SoC) can be different
from the CPU physical address size. These two different physical
address sizes should be used for settings of their respective field.
For instance, the physical address size related to the CPU should be
used for MTRR programming while the physical address size of the SoC
should be used for MMIO resource allocation.
Typically, on Meteor Lake, the CPUs physical address size is 46 if TME
is disabled and 42 if TME is enabled but Meteor Lake SoC physical
address size is always 42. As a result, MTRRs should reflect the TME
status while coreboot MMIO resource allocator should always use
42 bits.
This commit introduces `SOC_PHYSICAL_ADDRESS_WIDTH' Kconfig to set the
physical address size of the SoC for those SoCs.
BUG=b:314886709
TEST=MTRR are aligned between coreboot and FSP
Change-Id: Icb76242718581357e5c62c2465690cf489cb1375
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79665
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Use same indent levels for switch/case in order to comply with the
linter.
Change-Id: Icf41e823c42ffea7b73bdd9112081af4d1f94bc9
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79417
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
Reviewed-by: Eric Lai <ericllai@google.com>
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When preprocessing the linker script the target arch needs to be
specified.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: Id18af3da93d2d06a2ebb83eddd03377c9026c8fa
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78443
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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LLVM/clang 17 removed support for CSR names that are no longer included
in the RISC-V ISA Manual Privileged Specification since version 1.12.
Related LLVM commit: https://reviews.llvm.org/D149278
Change-Id: I7c8f2a06a109333f95230bf0a3056c8d5c8a9132
Signed-off-by: Lennart Eichhorn <lennarteichhorn@googlemail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79364
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
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We seem to be passing CPPFLAGS to linker in x86 arch
ramstage. This is superflous as these are only meant
to be compiler flags and should not be passed to the
linker.
Change-Id: Ia3cd51be6be252aa796191cf0d2cd91d393c8878
Signed-off-by: Srinivas Hegde <srinivashegde@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79218
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
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Without this it would use the exception handler from the previous
stage.
Change-Id: I79d875aca6cd0cffe482e4ebb5f388af0adf6aed
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68840
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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With the update to GCC 13 a new warning about subtracting numbers from
arrays appears.
src/arch/arm64/armv8/mmu.c:296:9: error: array subscript -1 is outside array bounds of 'u8[]' {aka 'unsigned char[]'} [-Werror=array-bounds=]
Change-Id: I4757ca2e7ad3f969d7416041ea40c3e9866cdf49
Signed-off-by: Zebreus <lennarteichhorn@googlemail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79014
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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This adds a few new files to romstage, that will be needed in
follow-up patches.
Change-Id: I2ba84e0becee883b5becf12e51f40734cad83d7d
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68839
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
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Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: Ib1af1359249008d9eba351271637748a7edcec26
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78966
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: Ia005915a05d02725f77b52ccd7acebefaf25d058
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78964
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Having a separate romstage is only desirable:
- with advanced setups like vboot or normal/fallback
- boot medium is slow at startup (some ARM SOCs)
- bootblock is limited in size (Intel APL 32K)
When this is not the case there is no need for the extra complexity
that romstage brings. Including the romstage sources inside the
bootblock substantially reduces the total code footprint. Often the
resulting code is 10-20k smaller.
This is controlled via a Kconfig option.
TESTED: works on qemu x86, arm and aarch64 with and without VBOOT.
Change-Id: Id68390edc1ba228b121cca89b80c64a92553e284
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55068
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
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The value from raw_read_cntfrq_el0() could be large enough to cause
overflow when multiplied by USECS_PER_SEC. To prevent this, both
USECS_PER_SEC and tfreq can be reduced by dividing them by their GCD.
BUG=b:307790895
TEST=emerge-geralt coreboot
TEST=boot to kernel and check the timestamps from `cbmem`
Change-Id: I366667de05392913150414f0fa9058725be71c52
Signed-off-by: Yidi Lin <yidilin@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78800
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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In 64bit movsq is available which moves memory in chunks of 8 bytes
rather than 4 bytes.
Linux uses the same code.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I65f178d2ed3aae54b0c1ce739c2b4af8738b9fcc
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78646
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Reviewed-by: Eric Lai <ericllai@google.com>
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This is required for compliant ACPI/SMBIOS implementations on AArch64,
and can optionally be displayed to the user.
Change-Id: I7022fc3c0035208bc3fdc716fc33f6b78d8e74fc
Signed-off-by: Benjamin Doron <benjamin.doron@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78042
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
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Having a CBFS cache scratchpad offers a generic way to decompress CBFS
files through the cbfs_map() function without having to reserve a
per-file specific memory region.
This commit introduces the x86 `RAMSTAGE_CBFS_CACHE_SIZE' Kconfig to
set a ramstage CBFS cache size. A cache size of zero disables the
CBFS cache feature. The default size is 16 KB which seems a
reasonable minimal value large enough to satisfy basic needs such as
the decompression of a small configuration file. This setting can be
adjusted depending on the platform needs and capabilities.
To support S3 suspend/resume use-case, the CBFS cache memory cannot be
released to the operating system. There are two options to meet this
requirement:
1. Define a static CBFS cache buffer (located in the .bss section)
2. Create a new CBMEM entry
Option #2 seems more powerful but considering that:
1. The CBFS cache is actually not a cache but just a scratch pad
designed to be isolated between stages
2. postcar is a very short stage not really needing CBFS cache
3. The static initialization of the `cbfs_cache' global
variable (cf. src/lib/cbfs.c) offers a simple and robust design
=> It is simpler to use a static buffer and limit the support to
ramstage.
Since some AMD SoCs (cf. `SOC_AMD_COMMON_BLOCK_NONCAR' Kconfig) define
a `_cbfs_cache' region, an extra `POSTRAM_CBFS_CACHE_IN_BSS' Kconfig
must be set to enable the use of a static buffer as the CBFS cache
scratchpad.
TEST=Decompression of vbt.bin in ramstage on rex using cbfs_map()
Change-Id: I7fbb1b51cda9f84842992e365b16c5ced1010b89
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77885
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Having a CBFS cache scratchpad offers a generic way to decompress CBFS
files through the cbfs_map() function without having to reserve a
per-file specific memory region.
This commit introduces the x86 `PRERAM_CBFS_CACHE_SIZE' Kconfig to set
the pre-memory stages CBFS cache size. A cache size of zero disables
the CBFS cache feature. The default value is 16 KB which seems a
reasonable minimal value enough to satisfy basic needs such as the
decompression of a small configuration file. This setting can be
adjusted depending on the platform needs and capabilities.
We have set this size to zero for all the platforms without enough
space in Cache-As-RAM to accommodate the default size.
TEST=Decompression of vbt.bin in romstage on rex using cbfs_map()
Change-Id: Iee493f9947fddcc57576f04c3d6a2d58c7368e09
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77290
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
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Add a function to get the number of substates supported by
an Intel CPU C-state.
Test: Can read out the supported C-state substates.
Change-Id: Ie57e87609ea5d6ec6f37154e8b84f1e9574aa4a9
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78224
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
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In the cpuid helper functions eax is always written to
by the cpuid instruction, so add it to the output clobbered list.
This prevents GCC from generating code with undefined behaviour
when the function is inlined.
Test: Verified that the generated assembly is sane and runtime
tests showed no "strange" behaviour when calling cpuid
functions.
Change-Id: I5dc0bb620184a355716b9c8d4206d55554b41ab9
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78192
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Krystian Hebel <krystian.hebel@3mdeb.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
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Since also some AMD CPUs have reserved physical address bits that can't
be used as normal address bits, introduce the
RESERVED_PHYSICAL_ADDRESS_BITS_SUPPORT Kconfig option which gets
selected by CPU_INTEL_COMMON, and use the new common option to configure
if the specific SoC/CPU code implements get_reserved_phys_addr_bits or
if the default of this returning 0 is used instead.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I0059e63a160e60ddee280635bba72d363deca7f7
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78073
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
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The number of physical address bits and reserved address bits shouldn't
ever be negative, so change the return type of cpu_phys_address_size,
get_reserved_phys_addr_bits, and get_tme_keyid_bits from int to unsigned
int.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I9e67db6bf0c38f743b50e7273449cc028de13a8c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78072
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Varshit Pandya <pandyavarshit@gmail.com>
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Use cpuid_get_max_func instead of open-coding the same functionality in
cpu_check_deterministic_cache_cpuid_supported.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I590f0c840bc62bbd0b5038c5827367d811e30d10
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78108
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
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Before the cpuid(0x80000001) read in smbios_write_type4, it was
previously checked in a slightly convoluted way if the result from
cpu_cpuid_extended_level was larger than 0x80000001, but the check
should be if it is larger or equal to 0x80000001.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Iabcfdb2b8b90d80baf8f4c4d2fd79f1f44866dc7
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78107
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Use cpu_cpuid_extended_level instead of open-coding the same
functionality in smbios_write_type4.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ib8e20726ea17e8ed94d5ff8f6568758fcfa162ae
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78106
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
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Use cpuid_eax and cpuid_ecx instead of sort-of open-coding the same
functionality in cpu_check_deterministic_cache_cpuid_supported.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ib0dc2be4f602bf63183b9096e38403ae2f45d959
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78058
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Use cpu_cpuid_extended_level instead of open-coding the same
functionality in cpu_check_deterministic_cache_cpuid_supported.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I4ea22c3997769179311f3c8822e6d8cc15a8834c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78057
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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CONFIG_HAVE_ACPI_SUPPORT does not exist. Replace it with
HAVE_ACPI_TABLES.
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: Icc7c00dc19cae4be13e6c8cc0084a69aed8fb8f5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77977
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
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Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I63bbac225662377693ad5f29cc8911494c49b422
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76009
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
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Linux v6.3.5 is able to detect and use ACPI tables on an out of tree
target using hacked version of u-boot to pass ACPI through UEFI.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I4f60c546ec262ffb4d447fe6476844cf5a1b756d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76071
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
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With commit b7832de0260b042c25bf8f53abcb32e20a29ae9c ("x86: Add .data
section support for pre-memory stages"), the libhwbase and libgfxinit
.data symbols can be moved to the .data section.
Change-Id: I302391e7bc8cb4739e5801d360c57776b0e3eff6
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77897
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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