The fspm_rc_heap is already accounted for inside .car.data. Some linkers
like LLD do not like overlapping regions so remove this.
Change-Id: I058bd6790afc313e06f1888e5b783d97b7e93b1e
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84048
Reviewed-by: Shuo Liu <shuo.liu@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
The underlying IMD function already returns an integer which indicates
success or failure.
This removes the need to have initialized variables that need to be
checked for NULL later. In some cases this actually adds the appropriate
check for returned values.
Dying is appropriate if cbmem is not found as it is essential to the
bootflow.
Change-Id: Ib3e09a75380faf9f533601368993261f042422ef
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84039
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Some targets cannot be supported by clang as clang generates slightly
larger binaries which the hardware won't accept. This is usually the
case with CONFIG_CHROMEOS.
Change-Id: I88cf8ce16fb6c61c19d615e396f5871179b06fc8
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69747
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
A few differences with the original link targets:
- 'libs' is now supported on all arch even though only x86 uses it
- compiler_rt is included on arch that previously did not (arm). This
however has no impact as there compiler_rt is not defined for those
arch in xcompile
- LIBGCC_FILE_NAME_bootblock is not included, but this was not defined
anywhere so this is a noop
Change-Id: I64f7686894c99732d06972e7ba327061db6d7c44
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83574
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This removes the boilerplate --oformat out of the makefile.mk
Change-Id: Ib78934fff4a31c4375da2038efca5027b813b07b
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83999
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Previously RAM probing was necessary for our QEMU-RISCV target in order
to find the available amount of memory.
Now we get the memory from the devicetree propagated by QEMU, so there
is no reason to keep it anymore.
Tested:
Start QEMU-RISCV and cause an exception to make sure the trap handler
still works.
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I9b1e0dc78fc2a66d6085fe99a71245ff46f8e63c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83873
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
For easier debugging it is useful to have a function that prints the PMP
regions.
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I6ab1531c65b14690e37aecf57ff441bf22db1ce5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83283
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: ron minnich <rminnich@gmail.com>
Since most targets support clang it's easier to reverse the semantics of
the Kconfig options.
Change-Id: Ib28e7a4cb286b9f8b05be94dae3947179f43c746
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81659
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Currently we use "%p" to print the address, which results in different
string lengths, depending on the value of the address. To improve
readability of the printed addresses in the log, change the format to
"0x%013lx", so that the length of the printed addresses will be
consistent.
In addition, print the level of the translation table when setting up a
new table.
Example log:
Backing address range [0x0000000000000:0x1000000000000) with new L0 ...
Mapping address range [0x0000000000000:0x0000200000000) as ...
Backing address range [0x0000000000000:0x0008000000000) with new L1 ...
Mapping address range [0x0000000100000:0x0000000130000) as ...
Backing address range [0x0000000000000:0x0000040000000) with new L2
Backing address range [0x0000000000000:0x0000000200000) with new L3
Mapping address range [0x0000000107000:0x0000000108000) as ...
Mapping address range [0x0000000200000:0x0000000300000) as ...
Backing address range [0x0000000000000:0x0000000200000) with new L3 ...
BUG=none
TEST=emerge-geralt coreboot
BRANCH=none
Change-Id: Ib29c201e1b096b9c7cd750d2541923616bc858ac
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83652
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Also take the chance to sort the headers.
BUG=none
TEST=none
BRANCH=none
Change-Id: I9d487a40d0c58c6458b8b7d32b6401093fa417e7
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83651
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Currently we include a header file from the opensbi submodule.
That causes some issues, since we merge outside code with our own.
Most recently there have been made attempts to make the coreboot
codebase C23 ready. The code that we include from opensbi however causes
the build to fail, since it is not C23 ready.
This patch effectivily detaches the coreboot codebase from the opensbi
codebase and just copies the structure and definitions that we need from
opensbi into coreboot.
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I9d8f85ee805bbbf2627ef419685440b37c15f906
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83641
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
No assembly.inc file is being generated by romcc anymore.
The -I. was only used in a single place that can use the common -Isrc
instead.
Change-Id: I57a3a6e1c2cf7cf30fb0cd94cc8455f715050490
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83563
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
There is no difference in how early and later stages are linked so
rename the same function.
Change-Id: I458c7c6822b310847e7ab32519fd8d66a90f88f7
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83562
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
We only use the bfd linker currently but partial linking is not
supported by other linkers and is also a problem for LTO.
Change-Id: I3b23d86e604229262d7c762e23bb963a0e944b5d
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71910
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Add a new Kconfig option ARM64_BL31_OPTEE_WITH_SMC to control whether to
build the OP-TEE dispatcher for BL31. This config also enables the BL31
build option OPTEE_ALLOW_SMC_LOAD, which allows loading the OP-TEE image
after boot via a Secure Monitor Call (SMC). For ChromeOS devices,
CROS_WIDEVINE_SMC is also enabled to allow passing secrets from firmware
to OP-TEE.
BUG=b:347851571
TEST=emerge-geralt coreboot
BRANCH=geralt
Change-Id: I4dcf82d47b537146d71ce3cd2050ec597ed0734f
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83111
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
The word "experimental" has been removed from the help text for
HAVE_X86_64_SUPPORT Kconfig. This is because the x86_64 architecture
has now been officially tested and enabled for several x86 SoC
platforms.
This work will provide us with the foundation we need to begin working
with Intel's next-generation SoC platform (which requires to support
64-bit mode of booting by default).
Therefore, we can now remove the word "experimental" from the
"HAVE_X86_64_SUPPORT" Kconfig help text.
TEST=Able to build and boot google/rex64 in 64-bit mode to ChromeOS.
Change-Id: Ibd629f4e2722f3cbabbe297d4481790c9fa9226a
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83009
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
The QEMU Bochs display driver and the QEMU Firmware Configuration
interface code (in the qemu-i440fx mainboard dir) were written for x86.
These devices are available in QEMU VMs of other architectures as well,
so we want to port them to be independent from x86.
The main problem is that the drivers use x86 port I/O functions to
communicate with devices over PCI I/O space. These are currently not
available for ARM* and RISC-V, although it is often still possible to
access PCI I/O ports over MMIO through a translator.
Add implementations of port I/O functions that work with PCI I/O space
on these architectures as well, assuming there is such a translator at a
known address configured at build-time.
Change-Id: If7d9177283e8c692088ba8e30d6dfe52623c8cb9
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80372
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
ARM SoC supports FEAT_CCIDX after ARMv8.3. The register field
description of CCSIDR_EL1 is different when FEAT_CCIDX is implemented.
If numsets and associativity from CCSIDR_EL1 are not correct, the system
would hang during mmu_disable().
Rather than assuming that FEAT_CCIDX is not implemented, this patch
adds a check to dcache_apply_all to use the right register format.
Reference:
- https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/12770
BUG=b:317015456
TEST=mmu_disable works on the FEAT_CCIDX supported SoC.
TEST=manually add mmu_disable to emulation/qemu-aarch64/bootblock.c and
verify with the command
qemu-system-aarch64 -bios \
./coreboot-builds/EMULATION_QEMU_AARCH64/coreboot.rom -M \
virt,secure=on,virtualization=on -cpu max -cpu cortex-a710 \
-nographic -m 8192M
Change-Id: Ieadd0d9dfb8911039b3d36c9419af4ae04ed814c
Signed-off-by: Yidi Lin <yidilin@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82635
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
<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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
<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>
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>
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>
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>
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>
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>
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>
