Commit graph

1,487 commits

Author SHA1 Message Date
Julius Werner
8097809c8a libpayload: Fix strsep() edge cases
Our strsep() function is slightly incorrect in that it leaves the
`stringp` pointer pointing to the terminating NUL byte after parsing the
last token. The man page for official implementations says:

> In case no delimiter was found, the token is taken to be the entire
> string *stringp, and *stringp is made NULL.

This doesn't affect things in practice much because we also
(incorrectly) return NULL when called with `**stringp == '\0'`, meaning
the usual pattern of calling `strsep()` in a row without checking
results first still works when there are less tokens than expected,
since we terminate early from that case instead. But it does break the
edge cases where the caller wants to check if there were extra bytes
beyond the last token (`stringp == NULL`), and where we call `strsep()`
on a pointer pointing directly to a terminating NUL byte already
(supposed to return an empty string but our implementation actually
returns NULL). It doesn't look like these edge cases occur anywhere in
current libpayload or depthcharge code.

This patch fixes the issue and also adds a unit test to ensure it
remains correct in the future. (Also move the definition of the `errno`
variable from lib.c into string.c, because `perror()` in string.c is the
only function that actually needs that, and the crazy linker error you
get when only linking one but not the other into a test will waste you
half an hour to figure out.)

Change-Id: I610b5117710c110bcba4fac2a0bb6c13f4f8d046
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88729
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2025-08-13 17:44:31 +00:00
Elyes Haouas
ecbca16bf4 tree: Replace union {0} initializers with {} for C23 compliance
This change addresses GCC-15 behavior where {0} union initializers only
clear the first member, leaving padding bits uninitialized. The new {}
initializer ensures full union clearing as required by C23.

Change-Id: I1d9b063d8bdd3d2f0b0f67e6c20eb484ff6a5cc5
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88732
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yidi Lin <yidilin@google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
2025-08-11 16:40:34 +00:00
Kapil Porwal
53dd93ff14 libpayload/drivers/pci_qcom: Fix address during ATU config
BUG=none
TEST=CQ

Change-Id: Id9825cca5dc6cb26cc72970ee496efa564c0b95d
Signed-off-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88588
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
2025-07-30 17:54:17 +00:00
Martin Roth
05396238da libpayload/drivers: Fix mem-leak in cbmem_console error condition
When returning from cbmem_console_snapshot() because of a corrupted
console structure, the memory that was just allocated was not being
freed as it "should be".

BUG=CID 1419477

Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: I85370fb49c9ef9a00cd2ea516fa80c9e152c9b48
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88334
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
2025-07-08 16:18:25 +00:00
Elyes Haouas
ef10e93e0a tree: Replace scan-build by clang-tidy
Change-Id: I0e59a1667759723bbf8d76232e7e5375837d2e9a
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87908
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
2025-07-01 01:12:32 +00:00
Subrata Banik
61d74dc8f7 payloads: Propagate SPI flash address mode flag to libpayload
This commit extends libpayload's understanding of SPI flash devices by
adding a flags field to both struct cb_spi_flash and struct
sysinfo_t.spi_flash.

The new CB_SPI_FLASH_FLAG_IN_4BYTE_ADDR_MODE flag will be populated
from the coreboot table's lb_spi_flash entry. This allows payloads to
reliably determine if the SPI flash is currently configured for 4-byte
addressing, enabling more robust flash operations without needing to
re-probe or re-enforce the mode.

Note: `erase_cmd` type was changed from uint32_t to uint8_t. This is
because only the lowest byte of the original uint32_t was ever used.
The change ensures proper sizing, maintains compatibility with older
coreboot tables, and makes the remaining space available for new fields.

BUG=b:417900125
TEST=Able to build google/bluey.

Change-Id: I101a50f899e82e9412024a049a9df59c5813313a
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88182
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2025-06-28 02:40:48 +00:00
Julius Werner
6e58c0148b Reland "libpayload: arm64: Reduce DMA allocator space to 1MB"
This reverts commit 4199351c1b which
originally reverted aedc177f00.

Reason for revert: CB:88063 fixed the bug that this patch exposed.

Change-Id: Ic7a798b4b9236b8c0c7ad8568562d11071ae96a9
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88097
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
2025-06-17 00:32:56 +00:00
Yu-Ping Wu
b4f2a51533 libpayload/arch/arm64/mmu: Fix missing CBMEM in used ranges
We use mmu_ranges to track the list of memory ranges and their types for
MMU initialization. We also keep track of used memory ranges in
usedmem_ranges, to avoid them from being re-allocated in
mmu_alloc_range().

The problem is, the CBMEM range (CB_MEM_TABLE) is added to mmu_ranges,
but is never marked as "used" in usedmem_ranges. This potentially causes
any allocation (for example the framebuffer) to overlap with CBMEM. This
issue is observed when DMA_DEFAULT_SIZE is reduced from 32MB to 1MB [1].
Prior to that change, because there isn't enough space above the
coreboot table (with the 4GB upper limit) to fit the 32MB requested
region, the DMA heap is always allocated *below* the coreboot table. And
because the coreboot table is usually the lowest within CBMEM, the DMA
heap region is allocated *below* the whole CBMEM, which happens the
avoid the issue.

Fix the bug by adding CB_MEM_TABLE ranges to usedmem_ranges. The ranges
in usedmem_ranges don't need to be combined because they are not for MMU
initialization (and there's only one CB_MEM_TABLE range).

[1] commit aedc177f00 ("libpayload: arm64: Reduce DMA allocator space to 1MB")

BUG=b:424107889
TEST=emerge-skywalker libpayload
BRANCH=none

Change-Id: Ie9ecafc17546e524253c60ab684ec10ff3495998
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88063
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Bartłomiej Grzesik <bgrzesik@google.com>
Reviewed-by: Jakub "Kuba" Czapiga <czapiga@google.com>
2025-06-13 15:23:09 +00:00
Jakub "Kuba" Czapiga
4199351c1b Revert "libpayload: arm64: Reduce DMA allocator space to 1MB"
This reverts commit aedc177f00.

Reason for revert: With this change depthchange clears parts of cbmem on Google/Corsola when display is cleared.

BUG=b:424107889

Change-Id: I6cc21693ddcaed59e41e333b773e0baeb29d3b40
Signed-off-by: Bartłomiej Grzesik <bgrzesik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88051
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
2025-06-11 19:45:49 +00:00
NyeonWoo Kim
033810a7db payloads/libpayload/Makefile.mk: Replace nm with $(NM)
I got 'nm' usage error when i built coreinfo payload.
	nm: unrecognized option '--no-weak'

it seems that this is occurred by using nm for host, not for coreboot.

So, I replace nm with $(NM)

Change-Id: I0a0a04b351c9131b1238e8cc7e63e396820494d9
Signed-off-by: NyeonWoo Kim <knw0507@naver.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87906
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
2025-06-05 13:37:27 +00:00
Yu-Ping Wu
508d910ed4 libpayload/arch/mock: Select ARCH_HAS_NDELAY for ARCH_MOCK
Unit tests should always use a mock ndelay() defined within each test.
Therefore, select ARCH_HAS_NDELAY for ARCH_MOCK.

Change-Id: I2680e37034d4d13058b3e778d72e63fc6ed18313
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87855
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
2025-05-28 00:15:29 +00:00
Julius Werner
df0221e62a libpayload: Protect against trying to use weak symbols in the wrong way
Weak symbols don't work as expected when you try to override them from
within the same static library. Static libraries are just archives of
individual objects, and when the linker tries to resolve a symbol
against it it simply uses the implementation from the first object that
has one, weak or not. It does not search through all remaining objects
to see if there's also a strong implementation.

We've had multiple cases in libpayload where builds were incorrectly
using the default implementation rather than an optimized arch-specific
implementation for years due to this issue. To prevent it from
recurring, this patch adds some postprocessing script to the Makefile
that checks for this situation and makes the build fail if it creeps in
again.

Change-Id: I9fcbc9b873901d126322b12954c349c08300369f
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87777
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
2025-05-26 18:40:51 +00:00
Julius Werner
aedc177f00 libpayload: arm64: Reduce DMA allocator space to 1MB
On arm64 device libpayload reserves 32MB of space for the DMA allocator.
DMA allocators are usually just used for small bounce buffers or DMA
descriptors for SPI, I2C or USB transfers, nothing that should get
anywhere near the size of megabytes.

Presumably the original number was just made arbitrarily large because
it didn't matter. But more recently we have had security applications
(guarding secrets that get received over SPI/I2C from firmware and must
not be visible to the OS after handoff) that made us want to erase the
entire DMA heap just to be sure no driver left a copy of any secret
lying around there. This means the size is no longer fully harmless
because erasing a larger heap takes more time.

Change the default to 1MB which should still be more than more than
enough for any real applications, but should bring the time required to
erase it back into negligible territory.

BUG=b:418942992
TEST=Booted Trogdor from USB.

Change-Id: Id56486203c512d7ff08909cac1a016adc44d8e68
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87780
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
2025-05-22 20:56:14 +00:00
Julius Werner
4ccb4a78c4 libpayload: Use Kconfig instead of weak symbol for arch_ndelay()
Weak symbols don't work as expected when you want to override them from
within the same static library. This patch changes the arch_ndelay()
function so that instead of having a weak generic implementation, the
choice between generic implementation and an arch-specific override is
explicitly made by Kconfig. Let's also drop the "arch_" prefix and just
call this ndelay().

Change-Id: Ie4fe2734e0683fa3537e2ebcabfe067e7499463a
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87776
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Jakub "Kuba" Czapiga <czapiga@google.com>
2025-05-22 19:27:30 +00:00
Julius Werner
37513297d3 libpayload: Use Kconfig for architecture memcpy, not weak symbols
Our mechanism to override the default (pure C) memory function
implementations (memset, memcpy, memmove) with architecture-specific
optimized assembly versions doesn't actually work: it turns out that
weak functions don't work as you'd naively expect when you pack them
together with a strong definition from a different object into a static
library. When a linker tries to resolve a symbol from a static library,
it just picks the first one it finds, even if it is weak. It doesn't
evaluate all objects in the library to see if there are other strong
definitions.

To fix this, this patch gets rid of the weak symbols and uses Kconfigs
instead. It adds an optimized memmove() implementation for x86 because
that makes things easier (then all architectures either override all
three functions or none of them). Also remove memcmp() from the
functions that can be overridden for now because nobody ever needed that
anyway.

Change-Id: Iedf9898247f1999e56fde3233fad8b7cb36b1269
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87766
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2025-05-22 19:27:24 +00:00
Julius Werner
c1bcb43f7c cbgfx: Prevent divide-by-zero edge case in Lanczos kernel
The existing lanczos_weight() implementation naively follows the purely
mathematical definition for the `x == 0` special case. However, the
point of defining that special case is obviously to prevent division by
zero in the general case formula. Unfortunately we are still doing some
multiplications with `x` before we get to the division step, and our
fpmath library loses precision during multiplication. This can lead to
edge cases where `x` is not zero but `x_times_pi` later ends up being 0,
which causes the division to throw an exception after all. (I guess
we've just been lucky to not see this case in practice for now... it
requires the output pixel coordinate to be extremely close to but not
quite on the next input pixel coordinate, which may be rare in practice
with our scaling algorithms.)

This patch fixes the issue by implementing the special case later and
checking if `x_times_pi` is zero instead. Note that as long as we pass
this check, we can be confident that the division cannot fail even
though fpdiv() also truncates the divisor: this is because `x_times_pi`
was calculated from an fpmul() call with the constant fppi(), which has
34 significant bits. Even if x is the smallest possible non-zero value
after scaling for multiplication, the result `x_times_pi` must still
have 18 significant bits. That means it can be scaled down a further 16
bits for division without becoming zero.

Also add a simple unit test forcing exactly this condition to ensure the
code will not regress.

Change-Id: I2f212ee5df38252e97ec55aba3d2d25320c4b102
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87532
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Jakub "Kuba" Czapiga <czapiga@google.com>
2025-05-06 21:04:04 +00:00
Julius Werner
f2cf732997 libpayload: usbmsc: Correctly deal with disks larger than 2TB
Disks larger than 2TB (technically disks with more than 2^32 blocks, but
for the common block size of 512 that comes out to 2TB) cannot represent
their full amount of blocks in the SCSI READ_CAPACITY(10) command used
by libpayload's USB mass storage driver. The entire driver isn't written
to support block addresses larger than 32 bits anyway.

The SCSI command has been designed in a clever way so that devices are
supposed to return the maximum value (0xffffffff) if the actual value
doesn't fit. However, our code adds one to the value (because it is
actually the address of the last block, but we want to know the number
of blocks). This makes it overflow back to 0 which is not great.

This patch caps the result before incrementing it so that the overflow
cannot occur, allowing us to at least access the first 2TB of super
large USB sticks.

Change-Id: Ic445923b7d588c4f523c4ed95a06291bc1969261
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87506
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
2025-05-02 23:24:25 +00:00
Bartłomiej Grzesik
584f9bcc3f Add allocation of a buffer for pvmfw within cbmem
Add an allocation of an empty buffer for the Android protected virtual
machine firmware within cbmem. The buffer will be filled by the payload
and the purpose is to just reserve the memory. cbmem is used to make
sure that the region won't overlap with other reserved regions
or device regions.

BUG=b:354045389
BUG=b:359340876
TEST=depthcharge receives the buffer through lib_sysinfo
BRANCH=main

Change-Id: I48efc033ac0f5fbfcf3a52fabf40be016cd4c6f7
Signed-off-by: Bartłomiej Grzesik <bgrzesik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87107
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jakub "Kuba" Czapiga <czapiga@google.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
2025-04-05 00:24:26 +00:00
Masa Nakura
ae532fe641 payloads/libpayload: Add fast data types to types.h
libpayload stdint.h only supports typedefs for datatypes of exact
bits. This makes libpayload less flexible to support libraries
that reference different data types.

Add fast data types in types.h.

BUG=b:386913035

Change-Id: Ie9197866ae9b6c27d3f26c11d8409ecb90321c74
Signed-off-by: Masa Nakura <nakura@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86632
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Hsuan-ting Chen <roccochen@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2025-03-10 15:21:44 +00:00
Maximilian Brune
a8139c0b87 treewide: Rename PM4LE -> PML4E
The x86 (AMD and Intel) spec defines it as Page-Map Level-4 Entry.
It is annoying when searching for the wrong abbreviation in the spec so
fix it everywhere it occurs.

source: Intel 64 spec April 2022 and AMD64 spec April 2024.

Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I730235beea69b3720f080bbade083c2eeed26587
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86587
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>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Benjamin Doron <benjamin.doron00@gmail.com>
Reviewed-by: Andy Ebrahiem <ahmet.ebrahiem@9elements.com>
2025-02-25 17:33:36 +00:00
Elyes Haouas
9c0edfa76b libpayload/tests: Remove unused test files
Change-Id: Id2cec6a56ba5ce98832aced6fc2cfd8ebda91f02
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86536
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2025-02-25 03:56:49 +00:00
Julius Werner
ba3af158aa libpayload: Unify selfboot() implementations
selfboot() doesn't really need to be architecture dependent. All
architectures are essentially doing the same thing with a normal
function call, only x86_32 needs an extra attribute. arm64 and x86 also
previously haven't been passing the coreboot table pointer, even though
they should. This patch fixes that.

Change-Id: If14040e38d968b5eea31cd6cd25efb1845a7b081
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86142
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2025-02-11 20:59:57 +00:00
Julius Werner
37e9c22089 libpayload: configs: Add new config.featuretest to broaden CI
This patch adds a new config to libpayload whose sole purpose it is to
be as different as possible from the defconfig, in order to try to get
the CI to exercise more code paths and thus catch more issues.

Change-Id: Ia6bd7572056b7a02acb686542810e661e015cc69
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81362
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
2024-12-04 22:25:34 +00:00
Elyes Haouas
995e763f09 payloads/libpayload: Add Wno-address-of-packed-member flag
Change-Id: I47d7b5af67563de96fb5d8c200ce186a3443728b
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84756
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jakub Czapiga <czapiga@google.com>
2024-10-15 18:55:32 +00:00
Yu-Ping Wu
a03e5456e6 libpayload/endian: Add read32p/write32p macros and friends
Add {read,write}{8,16,32,64}p macros and similar macros for clrsetbits,
setbits and clrbits.

Change-Id: If01e38663ffc1c08c553850d3210604c9b240655
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84592
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yidi Lin <yidilin@google.com>
2024-10-15 10:16:40 +00:00
Elyes Haouas
41663cf9cb payloads/libpayload: Remove Wno-trigraphs
Change-Id: I2a0ba493da327353c7489b471d4de91db30b8fc5
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84754
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jakub Czapiga <czapiga@google.com>
2024-10-15 02:19:58 +00:00
Yu-Ping Wu
e5cce00552 libpayload: Remove default empty implementations in mock cache.h
The mock/arch/cache.h file exists for libpayload unit tests. However,
the default implementations (as empty macros) in it make these functions
difficult to mock in unit tests.

Therefore, we follow what's done for mock/arch/io.h, by only including
function declarations in the header. Each test is expected to implement
mocks for these cache functions when required.

Change-Id: Ie4383bf95435fd7d74d624b19b79b5a117cf6d00
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84608
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Hsuan-ting Chen <roccochen@google.com>
2024-10-02 02:30:12 +00:00
Arthur Heymans
43bcbb0d56 libpayload/Makefile.payload: Add lto flags
Change-Id: If4496e300dd239b8652285bab05c2f68a51b4437
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84015
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2024-08-27 09:08:07 +00:00
Arthur Heymans
1dfe9dc460 libpayload: Set reasonable arch defaults
This makes it easy to switch between x86_32 and x86_64 in payloads.

Change-Id: I3ac5f24d83dc80db924e92b53403c477e6256c44
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84014
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
2024-08-27 09:06:58 +00:00
Arthur Heymans
338b5cd6da libpayload: Use unsigned integer for PDG_MASK
The clang compiler warns about undefined behavior about shifting signed
integers.

Change-Id: Ic4ce64207393ec4a8d6b188b35e0f436342826de
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84007
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2024-08-27 00:29:12 +00:00
Arthur Heymans
8d900ae1bf libpayload: Fix x86 output arch
The value used is not acceptable to BFD linker.

Change-Id: I0f134a96c596d69e10dd441b96184b119e9f1908
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84013
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2024-08-27 00:27:55 +00:00
Arthur Heymans
bb233555e3 libpayload: Allow LTO with clang
Change-Id: I41bb613de5d16ca180dd684a0bec4840d9119e6f
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84012
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2024-08-27 00:27:27 +00:00
Arthur Heymans
76df5d017e libpayload: Don't force GCC in Makefile.payload
This allows nvramcui to be build with clang.

Change-Id: I5e56ead81fc92b7ba4fb63a2c098b0e10b01ca53
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84010
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2024-08-27 00:27:12 +00:00
Arthur Heymans
fec86226b2 libpayload/x86: Fix assembly for clang
Change-Id: I81252dc2f89b3b3da0bb9a2388a041b600920b3f
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84009
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2024-08-27 00:27:00 +00:00
Arthur Heymans
7a044ef255 libpayload: Use defined length movs
This fixes building with clang.

Change-Id: I2fabe7fbe3f8afac5c1128debf2e09a484f26fc5
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84008
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
2024-08-27 00:26:32 +00:00
Arthur Heymans
1b13024491 libpayload/arm: Guard unsupported clang argument
Change-Id: I6cb0d717518478c35bc666867c7d0be957b89322
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84006
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
2024-08-27 00:26:05 +00:00
Jakub Czapiga
70d0fda89d libpayload: Add missing SIZE_MAX define
commonlib/region.h requires SIZE_MAX to be defined.

Change-Id: I588d59c2637b10def046ea02293e5503c9b6bc3d
Signed-off-by: Jakub Czapiga <czapiga@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83907
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Eric Lai <ericllai@google.com>
2024-08-19 23:20:00 +00:00
Yu-Ping Wu
aff734bc42 commonlib/bsd: Add strcat() and strncat() functions
An upcoming vboot feature [1] will need strcat() to be defined in
string.h. Therefore, add strcat() and strncat() to commonlib/bsd. Remove
those functions from libpayload.

[1] https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/5650810

Change-Id: If02fce0eafb4f6fa01d8bab17d87a32360f4ac83
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83765
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
2024-08-14 03:09:20 +00:00
Yu-Ping Wu
0dcdc0347c commonlib/bsd: Add strlen() and strnlen() functions
Add strlen() and strnlen() to commonlib/bsd by rewriting them from
scratch, and remove the same functions from coreboot and libpayload.

Note that in the existing libpayload implementation, these functions
return 0 for NULL strings. Given that POSIX doesn't require the NULL
check and that other major libc implementations (e.g. glibc [1]) don't
seem to do that, the new functions also don't perform the NULL check.

[1] https://github.com/bminor/glibc/blob/master/sysdeps/i386/strlen.c

Change-Id: I1203ec9affabe493bd14b46662d212b08240cced
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83830
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
2024-08-14 03:09:03 +00:00
Subrata Banik
67d01fd7ad libpayload: Unconditionally handle "CBMEM_ID_CSE_*" entries
This change removes the unnecessary conditional compilation around
CBMEM_ID_CSE_BP_INFO and CBMEM_ID_CSE_INFO handling in
cb_parse_cbmem_entry. These CBMEM IDs are only relevant on platforms
with SOC_INTEL_CSE_LITE_SYNC_BY_PAYLOAD enabled, and platforms without
this config option won't encounter these IDs when calling
cb_parse_cbmem_entry().

BUG=b:305898363
TEST=Builds and boots successfully:
    * google/rex0 with SOC_INTEL_CSE_LITE_SKU
    * google/rex64 with SOC_INTEL_CSE_LITE_SYNC_BY_PAYLOAD

Change-Id: Icf056f8426015e99509be5f5a67cb66468645cd9
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83436
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
2024-07-13 17:54:41 +00:00
Subrata Banik
7f822a3368 libpayload/x86: Add x86-64 support to rdtsc()
This patch adds support for x86-64 to the rdtsc() function, allowing
it to correctly read the Time Stamp Counter (TSC) on both 32-bit and
64-bit x86 architectures.

BUG=b:242829490, b:351851626
TEST=Builds and boots on google/rex0 and google/rex64 systems and
manually verified correct TSC readings on x86-32 and x86-64 hardware.

Change-Id: I0afac3db2e82a245a37c2e5cf2302bf1dad62c01
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83414
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
2024-07-11 15:27:30 +00:00
Subrata Banik
ea6b6acd01 soc/intel/cmn/cse: Refactor CBMEM ID handling for flexibility
This patch refactors the handling of CSE CBMEM IDs to enable platforms
to choose whether to perform CSE sync operations within coreboot or
defer it to the payload. This separation improves code organization,
ensuring `cse_lite.c` focuses on coreboot-specific CSE Lite tasks.

Now, platforms can select:
  * `SOC_INTEL_CSE_LITE_SKU` for CSE sync within coreboot
  * `SOC_INTEL_CSE_LITE_SYNC_BY_PAYLOAD` for deferred payload sync

This change ensures mutually exclusive options, avoiding unnecessary
SPI flash size increases.

BUG=b:305898363
TEST=Builds and boots successfully:
    * google/rex0 with SOC_INTEL_CSE_LITE_SKU
    * google/rex64 with SOC_INTEL_CSE_LITE_SYNC_BY_PAYLOAD

Change-Id: I74f70959715f9fd6d4d298faf310592874cc35d4
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83393
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2024-07-11 15:23:17 +00:00
Maximilian Brune
da336cd5c6 treewide: Move device_tree to commonlib
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I990d74d9fff06b17ec8a6ee962955e4b0df8b907
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77970
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2024-06-22 04:02:04 +00:00
Maximilian Brune
5afdcd9190 libpayload/include/endian.h: Add 64 bit enc/dec
Add 64 bit encode/decode functions to libpayload, since it is required
in the patch that moves device_tree to commonlib.

Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I5dba9a7f41147a511ba1250786e7c51ce623e70a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83082
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2024-06-22 03:59:03 +00:00
Eran Mitrani
5fccf367b8 libpayload: add cse_*info pointer to lib_sysinfo
Set a pointer in lib_sysinfo for CSE_BP_INFO and CSE_INFO.

BUG=b:343022317
TEST=Verified CBMEM data in depthcharge on Screebo

Signed-off-by: Eran Mitrani <mitrani@google.com>
Change-Id: I3aa64d1e439a0596e732a3c0608d60913cefd19f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82790
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
2024-06-21 19:59:39 +00:00
Subrata Banik
063c594e9f libpayload/x86: Extend exception handling to x86_64 architecture
Adds 64-bit (x86_64) support to libpayload's exception handler,
previously limited to x86_32.

Ensures `exception_init_asm` is called when building with
LP_ARCH_X86_64 Kconfig.

BUG=b:336265399
TEST=Successful build and boot of google/rex and google/rex64 on
ChromeOS.

Verified correct x86_64 exception handling by triggering "Debug
Exception" using firmware-shell as below:

firmware-shell: mm.l -0
Debug Exception
Error code: n/a
REG_IP:    0x0000000030023e9f
REG_FLAGS: 0x0000000000000046
REG_AX:    0x0000000000000009
REG_BX:    0x0000000000000000
REG_CX:    0x0000002000000000
REG_DX:    0x0000000000000001
REG_SP:    0x0000000034072ec0
REG_BP:    0x0000000000000009
REG_SI:    0x0000000000000029
REG_DI:    0x0000000034072eef
REG_R8:    0x0000000000000009
REG_R9:    0x0000000000000000
REG_R10:   0x0000000000000000
REG_R11:   0x0000000034072d70
REG_R12:   0x0000000000000004
REG_R13:   0x0000000000000001
REG_R14:   0x0000000034072ee6
REG_R15:   0x0000000000000004
CS:     0x0020
DS:     0x0000
ES:     0x0000
SS:     0x0018
FS:     0x0018
GS:     0x0050
Dumping stack:
0x340730c0: 3003c32e 00000000 ... 00000000 00000000
0x340730a0: 30034bc6 00000000 ... 0000002a 00000000
0x34073080: 34073234 00000000 ... 00002e65 00000000
...
...
0x34072ee0: 340730ed 30300000 ... 34073000 00000000
0x34072ec0: 34072ed8 00000000 ... 00000000 00000008
Ready for GDB connection.

Change-Id: I8f0aa1da8d179a760e8d49c3764dfd5a69d06887
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83036
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2024-06-20 19:51:18 +00:00
Subrata Banik
04202d1a7e libpayload/arch/x86: Fix register alignment in exception state dump
Removed an extra space character from the `printf` format string in
`dump_exception_state` to ensure proper alignment of register values
when printed during exception handling.

BUG=b:336265399
TEST=Built and booted google/rex64 successfully.
Verified correct alignment in exception state dumps.

Change-Id: I8ff92775e32ee754967b1b0a43cd68971b4aadfc
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83047
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2024-06-12 19:40:12 +00:00
Kapil Porwal
829b94dc98 treewide: Move skip_atoi function to commonlib
BUG=none
TEST=Build and verify on Screebo
TEST=make unit-tests

```
$ make tests/commonlib/bsd/string-test
[==========] tests_commonlib_bsd_string-test(tests): Running 1 test(s).
[ RUN      ] test_skip_atoi
[       OK ] test_skip_atoi
[==========] tests_commonlib_bsd_string-test(tests): 1 test(s) run.
[  PASSED  ] 1 test(s).
```

Change-Id: Ifaaa80d0c696a625592ce301f9e3eefb2b4dcd98
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82910
Reviewed-by: Jakub Czapiga <czapiga@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
2024-06-11 21:06:59 +00:00
Yidi Lin
6643b5e374 libpayload/arm64: Support FEAT_CCIDX
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.

Change-Id: I892009890f6ae889e87c877ffffd76a33d1dc789
Signed-off-by: Yidi Lin <yidilin@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82636
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
2024-06-05 11:09:16 +00:00
Subrata Banik
93ca6b676c libpayload: Include libpayload-config.h in lib target
- Added `$(obj)/libpayload-config.h` as a dependency for the `lib`
  target.
- This ensures the config header is up-to-date before building the
  library.

TEST=Able to build google/rex.

Change-Id: If26336f6261aadf611fa5338c4300873156cc3da
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82687
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Dinesh Gehlot <digehlot@google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
2024-05-29 09:18:26 +00:00