The power status bits of display and audio of MT8192 are different
from the bits of MT8173 & MT8183, so move those under each chip.
Signed-off-by: Weiyi Lu <weiyi.lu@mediatek.com>
Change-Id: Iaa211b8db733d8aa52d93af9e507042bf0984d55
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45393
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
This change updates devicetree to enable SSDT generation for world
facing camera and user facing camera of Waddledoo. Also reverts DSDT
changes related to both the camera.
Signed-off-by: Pandya, Varshit B <varshit.b.pandya@intel.com>
Change-Id: Ib7e875d297c04f35d4e980ff33d9a3767d2910ac
Signed-off-by: Sugnan Prabhu S <sugnan.prabhu.s@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44397
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Add compatible field for NVM
Make PRP0001 as default HID if device type is INTEL_ACPI_CAMERA_NVM
Signed-off-by: Pandya, Varshit B <varshit.b.pandya@intel.com>
Change-Id: Iad7afa7b3170982eb5d6215e766f3e98f7a89213
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45091
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
This enables the keyboard backlight feature in ACPI for madoo.
BUG=b:167943993
TEST=Verified 'kbd_backlight' shows up in the '/sys/class/leds '.
Signed-off-by: Ian Feng <ian_feng@compal.corp-partner.google.com>
Change-Id: I11531699cb650b96becae5c1bec9f89c48b6bea0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45330
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
This adds error checking in paths that previously ignored TPM
communication errors. We hit this case occasionally during "Checking
cr50 for pending updates"; previously we would go down this path and
eventually time out using MAX_STATUS_TIMEOUT, which is 2 minutes.
Now, we detect the failure and return with an error indication instead
of timing out after a long time. The root cause of the communication
error is an open issue.
BUG=b:168090038
TEST=booted on volteer, observed error handling when
"Checking cr50 for pending updates" fails.
Signed-off-by: Caveh Jalali <caveh@chromium.org>
Change-Id: Ia8a1202000abce1857ee694b06b1478e6b045069
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45232
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jes Klinke <jbk@chromium.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Servers often run headless, so a missing EDID isn't a problem. However,
we still need to initialize a framebuffer for the BMC's KVM function.
Reduce the log level to BIOS_INFO to avoid confusion.
Change-Id: Ice17bf6fdda0ce34e686dbf8f3a1fa92ba869d7c
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45234
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Memory speed is given as an integer in MHz. In some cases it has
an implicit fractional speed, so simply multiplying by 2 is not
sufficient.
Use method from dram/ddr4.c instead.
BUG=b:167155849
TEST=Boot ezkinil, check output of 'mosys memory spd print all'
and dmidecode -t17
BRANCH=Zork
Signed-off-by: Rob Barnes <robbarnes@google.com>
Change-Id: Icc77c21932c68ee9f0ff0b8e35ae7b1a3732b322
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45177
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Add method for converting DDR4 speed in MHz to MT/s. Checks that MHz is
within a speed grade range.
BUG=b:167155849
TEST=ddr4-test unit test
BRANCH=Zork
Change-Id: I1433f028afb794fe3e397b03f5bd0565494c8130
Signed-off-by: Rob Barnes <robbarnes@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45343
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
The gpio90 EN_PWR_TOUCHSCREEN had been set to PAD_GPO(GPIO_90, LOW), but
addtional PAD_NC(GPIO_90) cause enable fail. remove it for issue fixed.
BRANCH=zork
BUG=b:168580357
TEST=Check Touchscreen function work
Signed-off-by: Lucas Chen <lucas.chen@quanta.corp-partner.google.com>
Change-Id: Id94dd63ba51759cebaf17779a5e659dbe0f1807f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45415
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This I/O region is already covered by the range declared right above the
deleted one.
Change-Id: I8b8ff3385bbba8e69101ee2c5a5cb39c8f996b94
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45369
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This I/O region is already covered by the range declared right above the
deleted one.
TEST=Linux stops complaining about overlapping I/O regions.
BRANCH=zork
Change-Id: I149fb0dc85bfe721a6b0d81e4e9c197194718876
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45368
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Jason Glenesk <jason.glenesk@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This fixes commit e1d1fe454c
initialize 'reply.command'.
The compiler now optimized away the final condition, that checks
the result of heci message, resulting in a binary that always
calls die().
Fix that behaviour by using volatile.
Tested on Lenovo T410: Boots again into Linux.
Change-Id: I63cffc8812bd22695c01bf57283ca593b12e3d87
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45174
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
List of changes:
1. Add required SoC programming till romstage
2. Include only required headers into include/soc
3. Add SA EDS document number and chapter number
4. Fill required FSP-M UPD to call FSP-M API
Change-Id: I4473aed27363c22e92e66cc6770cb55aae83e75c
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45192
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Correct sizes of Count, Type, and Latency data field in _CST object to
integer, byte, word, respectively. Correct size of NumEntries data field
in _CSD object to integer.
BUG=b:155307433
TEST=Boot Morphius and dump SSDT _CST and _CSD objects. Confirm that
sizes written conform to ACPI_6_3_May16.pdf ACPI specification.
BRANCH=Zork
Change-Id: I356b46f2fa787e18442a66280b6545a3b525a08b
Signed-off-by: Jason Glenesk <jason.glenesk@amd.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45339
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This fixes commit 1b89f5e "Guard options with if-blocks".
The code no longer returns if SGX is disabled, but as the PRMRR
configuration is missing it runs into die().
Tested on Prodrive Hermes: Boots again into Linux.
Change-Id: I6d32ca32b1b53767b2db91305103cd532823a5ca
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45344
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Christian Walter <christian.walter@9elements.com>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This patch adds a check to avoid violating the PCH EDS recommendation
that the PchPmPwrCycDur will never be smaller than the the SLP_Sx
assertion widths.
This code was initially added for cannonlake and now moving it to common
code since the same check will be used to program the PchPmPwrCycDur
for Jasperlake and Tigerlake.
Change-Id: Ie7d5f54939c5eb1f885d303f75a04958b9d77f4d
Signed-off-by: V Sowmya <v.sowmya@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45028
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Fingerprint interrupt (FPMCU_INT_L) is level triggered and not edge
triggered. Also, we are using GEVENT for wake from fingerprint and
not the GPIO IRQ wake. Thus, the irq property exposed in ACPI tables
does not need to be set to indicate wake for the IRQ.
This change updates GPIO table to configure the pad as level triggered
and drops the wake attribute for irq_gpio in overridetree.
BUG=b:165612778
BRANCH=zork
TEST=Verified that fingerprint still works in S0 and to wake device
from S3.
Signed-off-by: Furquan Shaikh <furquan@google.com>
Change-Id: I9007e5b0882ac1a6770db52d651218998f6d750d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45307
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
As the UART clock frequency is no longer required by the UART
driver, remove the unwated frequency.
Tested: Compile and boot up testing.
Change-Id: I137682b3ca45481ad34ac8ddb5cd308444f752a7
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Ravi Kumar Bokka <rbokka@codeaurora.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45198
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
To achieve 115200 baudrate QcLib reconfigures UART frequency
with the lowest supported frequency from QUP clock table.
With this console logs were getting corrupted at qclib stage.
In ChromeOS coreboot, baudrate is configuarable using Kconfig.
QcLib should not assume the baudrate and reconfigure any UART
register once after the configuration is done in coreboot.
To fix the issue QcLib done the changes to not to reconfigure
any UART registers. Hence clock_configure_qup() is not required
in coreboot UART driver.
Signed-off-by: Roja Rani Yarubandi <rojay@codeaurora.org>
Change-Id: I2531b64eddfa6e877f769af0d17be61f5e4d0c35
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42095
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
There may be a gap between TSEG and the graphics stolen memory due to
the alignment done in `raminit.c`. If we allocate MMIO resources in
this range, it misbehaves unpredictably, so reserve it.
TEST=Booted Thinkpad X201s, allocated resources are above TOLUD.
Change-Id: If305e9751ebf4edc945cf038ed72698f3696e52d
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45325
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This change is being done for the following reasons:
1. The CONFIG_ELOG_PRERAM is unused.
2. We need to pull in elog.c into romstage because we are pulling the
mrc_cache_stash_data function into romstage.
3. Furquan says that we can rely on the linker to optimize out the
unused 4KiB buffer in the early stages of boot, which allows us to
get rid of the ELOG_PRERAM config.
BUG=b:117884485, b:150502246
BRANCH=None
TEST=./util/abuild/abuild -p none -t GOOGLE_NAMI -x -a -v
Change-Id: Id76cabc38e41e9bf79e1580a530c871a4ecef4ec
Signed-off-by: Shelley Chen <shchen@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45303
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Add check in setup_preram_cache to return if ENV_SMM is true.
This avoids false warning that post-RAM FMAP is accessed too early
caused by ENV_ROMSTAGE_OR_BEFORE evaluation in SMI handler.
BUG=b:167321319
BRANCH=None
TEST=None
Signed-off-by: Josie Nordrum <josienordrum@google.com>
Change-Id: I3a4c199c42ee556187d6c4277e8793a36e4d493b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45274
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Enabling Bus Master isn't required by the hardware, so we shouldn't need
to enable it at all. However, some payloads do not set this bit before
attempting DMA transfers, which results in boot failures.
Replace static sata_final() implementation for BM enabling with generic
pci_dev_request_bus_master() function.
This allows the user to control through Kconfig whether Bus Master
should be enabled.
TEST=Able to boot to OS from SATA device on CML platform.
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Change-Id: Icd086184fd6fa9c03c806c857f13fad5a9e78a3e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45320
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
List of changes:
1. Convert inconsistent white space into tab.
2. Group together all MCHBAR offset macros.
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Change-Id: Ief13406b0116ce0f0b7472e5b133b3fac06f6e27
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45321
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
PMC core OS driver (intel_pmc_core.c in linux kernel) provides debug
hooks to developers and end users to quickly figure out why their
platform is not entering a deeper idle state such as S0ix.
Include the common pmc.asl added in commit 957481c.
Test: PMC gets detected by Linux kernel module.
Change-Id: Ibf7c8ba7449df15c2ca30d23791e17fc878204f2
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45318
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
On some systems where the system compiler enables `-Wformat-security
-Werror=format-security` options by default, building libcpp fails
because the code passes a variable directly as a format string.
This change addresses this problem by patching the affected code.
Tested with the default compiler of Nixpkgs unstable, GCC 9.3.0 with the
options described above enabled by default.
Signed-off-by: Masanori Ogino <mogino@acm.org>
Change-Id: Ibf3c9e79ce10cd400c9f7ea40dd6de1ab81b50e2
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45311
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Certain non-Linux OSes require an include file in different
places.
Build tested on Linux, FreeBSD.
Change-Id: Icd81c2a96c608589ce2ec8f4b883fd4e584776b1
Signed-off-by: Idwer Vollering <vidwer@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38648
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
I plan on adding another eMMC parameter. This refactor keeps the config
contained in a single struct.
BUG=b:159823235
TEST=Build test
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I4b57d651ab44d6c1cad661d620bffd4207dfebd4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45095
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
GPP_A19(DP_HPD1) and GPP_A20(DP_HPD2) were configured native function
(NF1) without internal pull-down which wrongly presents HPD interrupts.
DP_HPD had been removed for EVT design as those events are through eSPI.
This change configures GPP_A19 and GPP_A20 to be no connection and
disables DdiPort1Hpd and DdiPort2Hpd.
BUG=b:162566436
TEST=Booted to kernel and verified no kernel HPD pins assertion message
on Delbin board.
Signed-off-by: Ravi Sarawadi <ravishankar.sarawadi@intel.com>
Change-Id: Ifdef8ee438276678258b75d2fb70c6dfc7ee0a33
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45031
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Caveh Jalali <caveh@chromium.org>
BUG=b:167297664
BRANCH=octopus
TEST=build fleex, and check touchscreen can work
Signed-off-by: John Su <john_su@compal.corp-partner.google.com>
Change-Id: I910681c258ff5487830e795a8bd08c66be69b1d4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44980
Reviewed-by: Justin TerAvest <teravest@google.com>
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Reviewed-by: Marco Chen <marcochen@google.com>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
Reviewed-by: Henry Sun <henrysun@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
We added transfer_info_struct to contain various information about
memory region we pass from PSP to x86 in commit 0c12abe462.
This should be at the start of transfer region but we only manipulated
it as local variable and didn't put data into the region, resulting
garbage data for transfer_info when x86 tries to read it.
Copy the content of local variable to beginning of _transfer_buffer
before requesting transfer to PSP so coreboot on x86 can access it.
BUG=b:159220781
BRANCH=zork
TEST=check transfer_info_struct is correctly populated on romstage
Signed-off-by: Kangheui Won <khwon@chromium.org>
Change-Id: I14bc34e6af501240a6f633db3999a7759e88d60b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44751
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Comments say `port`, but the actual function signature uses `base`.
Change-Id: I28a2f24a9701aec2fb990ca2f38e5f2794e15f0c
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45226
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Both PCH types are very different, and mixing the code for both together
isn't useful. Make `ISLP` return a constant, so that IASL can fold it.
Change-Id: I6222d6661115d444d4dad0217c2d376dc551465c
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45048
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Both PCH types are very different, and mixing the code for both together
isn't useful. First of all, inline `pch_is_lp` to return a constant.
This allows the compiler to optimize out unused code, which results in
smaller executables. For the Asrock B85M Pro4, it's about 2.5 KiB less.
Subsequent commits will further split the southbridge code.
Change-Id: Iba904acf64096478d1b76ffd05a076f0203502f8
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45047
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This is selected by Xeon SP Kconfig already.
Change-Id: If1ef7f86b27d7be74912c9ad1f9c1efbda6233e5
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45224
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jonathan Zhang <jonzhang@fb.com>
Reviewed-by: Christian Walter <christian.walter@9elements.com>
PREV_BOOT_ERR_SRC_HOB is generated by CPX-SP FSP by interrogating
error status registered (such as MCA MSRs) to list fatal errors happened
during the previous boot session.
The header file supports 3 different error source types. CPX-SP FSP
supports only McBankType.
Change-Id: I9b88af17075b98e88c7e94e55fea37627ec03cd0
Signed-off-by: Jonathan Zhang <jonzhang@fb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44973
Reviewed-by: Christian Walter <christian.walter@9elements.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Weiyi Lu