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Roughly, there are two ways to "measure ticks" in UEFI:
- the SetTimer() boot service, which sets up a one-shot or periodic event
callback, and takes the interval length in units of 100ns,
- the Stall() boot service, which stalls the caller (but does not yield
the CPU) for the interval specified. The interval is taken as a number
of microseconds.
If the platform in question also follows the PI (Platform Init)
specification, then it is recommended to implement the above UEFI services
on top of the following DXE Architectural Protocols (described in PI
Volume 2):
- Timer Architectural Protocol:
"Used to set up a periodic timer interrupt using a platform specific
timer, and a processor-specific interrupt vector. This protocol enables
the use of the SetTimer() Boot Service. [...]"
- Metronome Architectural Protocol:
"Used to wait for ticks from a known time source in a platform. This
protocol may be used to implement a simple version of the Stall() Boot
Service. [...]"
Edk2 in general, and ArmVirtualizationQemu in particular, follow the above
pattern.
SetTimer() works correctly. The underlying Timer Architectural Protocol is
provided by "ArmPkg/Drivers/TimerDxe", and that driver calls the internal
function ArmGenericTimerGetTimerFreq() to retrieve the timer frequency.
Ultimately it boils down to reading the CNTFRQ_EL0 register.
The correct behavior of SetTimer() can be observed for example:
- in the grub-efi countdown ("grub-core/kern/arm/efi/init.c"),
- in the Intel BDS front page countdown
("IntelFrameworkModulePkg/Universal/BdsDxe/FrontPage.c").
However, Stall() doesn't work correctly. The underlying Metronome
Architectural Protocol is provided by "EmbeddedPkg/MetronomeDxe", which
further delegates the job to the TimerLib library class. That in turn is
resolved to the "ArmPkg/Library/ArmArchTimerLib" instance, which
(finally!) takes the timer frequency from "PcdArmArchTimerFreqInHz".
In ArmVirtualizationQemu we currently specify 100MHz for this PCD. Alas,
that's incorect for:
- both QEMU/TCG (which emulates 62.5MHz, see GTIMER_SCALE in
"target-arm/internals.h"),
- and KVM (where the host's virtualized timer can tick at 50 MHz, for
example).
Set the PCD to 0, asking ArmArchTimerLib to interrogate CNTFRQ_EL0 as
well.
The change can be tested with eg. the following callers of Stall():
- the UEFI Shell's countdown -- before it runs "startup.nsh" -- relies on
Stall(),
- the UEFI shell command "stall" also uses Stall(). (Time it with a
stopwatch.)
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Olivier Martin <Olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16692 6f19259b-4bc3-4df7-8a09-765794883524
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Allow a platform to set PcdArmArchTimerFreqInHz to zero, and consider it a
request to use the actual timer frequency.
No global variable is introduced, so that the library can be used in PEIMs
that execute from flash.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Olivier Martin <Olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16691 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Olivier Martin <Olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16690 6f19259b-4bc3-4df7-8a09-765794883524
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In the next patch we'll slightly reorganize TimerConstructor(). Let's
improve the comments first.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Olivier Martin <Olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16689 6f19259b-4bc3-4df7-8a09-765794883524
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for trying to reclaim variable space at EndOfDxe.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16688 6f19259b-4bc3-4df7-8a09-765794883524
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for trying to reclaim variable space at EndOfDxe.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16687 6f19259b-4bc3-4df7-8a09-765794883524
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VarErrorFlag to local variable.
And leave the variable error flag in NV flash as the last boot variable error flag.
After EndOfDxe in InitializeVarErrorFlag (), the variable error flag in NV flash
will be initialized to this local current boot variable error flag.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16686 6f19259b-4bc3-4df7-8a09-765794883524
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VarErrorFlag to local variable.
And leave the variable error flag in NV flash as the last boot variable error flag.
After EndOfDxe in InitializeVarErrorFlag (), the variable error flag in NV flash
will be initialized to this local current boot variable error flag.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16685 6f19259b-4bc3-4df7-8a09-765794883524
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VarErrorFlag to local variable.
And leave the variable error flag in NV flash as the last boot variable error flag.
After EndOfDxe in InitializeVarErrorFlag (), the variable error flag in NV flash
will be initialized to this local current boot variable error flag.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16684 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Qiu Shumin <shumin.qiu@intel.com>
Reviewed-by: Jaben Carsey <Jaben.carsey@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16683 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jaben Carsey <Jaben.carsey@intel.com>
Signed-off-by: Joe Peterson <joe.peterson@intel.com>
Reviewed-by: Shumin Qiu <shumin.qiu@intel.com>
Reviewed-by: Tapan Shah <tapandshah@hp.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16682 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jaben Carsey <Jaben.carsey@intel.com>
Signed-off-by: Joe Peterson <joe.peterson@intel.com>
Reviewed-by: Shumin Qiu <shumin.qiu@intel.com>
Reviewed-by: Tapan Shah <tapandshah@hp.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16681 6f19259b-4bc3-4df7-8a09-765794883524
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lost for drivers.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16680 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: David Wei <david.wei@intel.com>
Reviewed-by: Tim He <tim.he@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16679 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: David Wei <david.wei@intel.com>
Reviewed-by: Tim He <tim.he@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16677 6f19259b-4bc3-4df7-8a09-765794883524
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The override fixed Showing IPv4 and IPv6 string format as
"EFI Network <MAC Address><IP version>" in Boot Manager Group under BIOS setup.
This override will be removed after core fixing.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Shifei Lu <shifeix.a.lu@intel.com>
Reviewed-by: Tim He <tim.he@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16675 6f19259b-4bc3-4df7-8a09-765794883524
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Correctly divide up parameters for Argc/Argv including quote ("), escape (^), and space ( ) processing.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jaben Carsey <Jaben.carsey@intel.com>
Reviewed-by: Joe Peterson <joe.peterson@intel.com>
Reviewed-by: Tapan Shah <tapandshah@hp.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16673 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jaben Carsey <Jaben.carsey@intel.com>
Reviewed-by: Joe Peterson <joe.peterson@intel.com>
Reviewed-by: Tapan Shah <tapandshah@hp.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16672 6f19259b-4bc3-4df7-8a09-765794883524
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Align the overrider with EDK2 trunk.(The override fixed default console text color)
This override will be removed after core fixing.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Shifei Lu <shifeix.a.lu@intel.com>
Reviewed-by: David Wei <david.wei@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16671 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16670 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16669 6f19259b-4bc3-4df7-8a09-765794883524
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when pressed hot key to enter BIOS setup.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Shifei Lu <shifeix.a.lu@intel.com>
Reviewed-by: Tim He <tim.he@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16666 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Mang Guo <mang.guo@intel.com>
Reviewed-by: David Wei <david.wei@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16662 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Chao Zhang <chao.zhang@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16661 6f19259b-4bc3-4df7-8a09-765794883524
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Modify DxeMain.c which displays incorrect debug message regarding FV Hob.
Specifically, the BaseAddress and Length are not related to the same FV.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16660 6f19259b-4bc3-4df7-8a09-765794883524
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The code in AcpiTableDxe handles the installation of FADT and FACS in both
possible orders. In the [FADT, FACS] installation order, the FACS is at
once linked into the FADT. In the [FACS, FADT] installation order, the
FACS is stashed temporarily, and it is linked into the FADT when the FADT
is installed later.
According to the ACPI specification, *at most one* of FADT.FirmwareCtrl
and FADT.XFirmwareCtrl may be nonzero. The code is aware of this
requirement, and it never sets both of them to nonzero values at once.
However, the code doesn't expect the following:
- The caller first installs the FACS, which is stashed. The address that
is saved happens to fall below 4GB.
- The caller then installs a FADT, with a zero FirmwareCtrl field, and a
nonzero (pre-populated) XFirmwareCtrl field.
In this case the code sets FADT.FirmwareCtrl to the less-than-4GB address
of the stashed FACS, and leaves the different nonzero value in
FADT.XFirmwareCtrl. This violates the ACPI specification.
Prevent this by always zeroing the field that we do *not* set.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jiewen Yao <Jiewen.Yao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16659 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Shifei Lu <shifeix.a.lu@intel.com>
Reviewed-by: David Wei <david.wei@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16658 6f19259b-4bc3-4df7-8a09-765794883524
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Fix the Windows MNW2 build by updating the library paths and adding support for VS2012 and VS2013.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Bruce Cran <bruce.cran@gmail.com>
Reviewed-by: David Wei <david.wei@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16657 6f19259b-4bc3-4df7-8a09-765794883524
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pl011 releases earlier than r1p5 has a fifo depth of 16 bytes, whereas
version r1p5 upwards has a fifo depth of 32 bytes. The pl011 driver was
hardwired to 32 byte depth, causing dropped characters on some platforms
(including default settings on FVP Base and Foundation models).
Update driver to select 16 or 32 on port initialization by checking the
component revision.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Olivier Martin <olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16656 6f19259b-4bc3-4df7-8a09-765794883524
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Fix the check to prevent any reading past the end of the nor flash.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Reviewed-by: Olivier Martin <olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16655 6f19259b-4bc3-4df7-8a09-765794883524
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Definitions
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Graeme Gregory <graeme.gregory@linaro.org>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16654 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Graeme Gregory <graeme.gregory@linaro.org>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16653 6f19259b-4bc3-4df7-8a09-765794883524
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These tables are:
- Differentiated System Description Table Fields (DSDT)
- Firmware ACPI Control Structure (FACS)
- Fixed ACPI Description Table (FADT)
- Generic Timer Description Table (GTDT)
- Multiple APIC Description Table (MADT)
- Secondary System Description Table Fields (SSDT)
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Graeme Gregory <graeme.gregory@linaro.org>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16652 6f19259b-4bc3-4df7-8a09-765794883524
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This support makes the Juno UEFI Firmware to look into the Firmware Volume
for the ACPI Tables. But it does not provide the ACPI Tables.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Graeme Gregory <graeme.gregory@linaro.org>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16651 6f19259b-4bc3-4df7-8a09-765794883524
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AcpiLib is a library to help working with ACPI Tables.
In this initial implementation, the library provides:
- a helper function to locate and install the ACPI Tables within
a Firmware Volume
- Some helper macros to initialize some ACPI structures
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Graeme Gregory <graeme.gregory@linaro.org>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16650 6f19259b-4bc3-4df7-8a09-765794883524
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Enable gcc build for minnowboard max with UDK2014.SP1.P1.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Tim He <tim.he@intel.com>
Reviewed-by: David Wei <david.wei@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16648 6f19259b-4bc3-4df7-8a09-765794883524
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logic to return it.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16647 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Shumin Qiu <shumin.qiu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16646 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16645 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16644 6f19259b-4bc3-4df7-8a09-765794883524
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to fix potential issue.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16643 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Elvin Li <elvin.li@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16642 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Long Qin <qin.long@intel.com>
Reviewed-by: Dong Guo <guo.dong@intel.com>
Reviewed-by: Ye Ting <ting.ye@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16641 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: David Wei <david.wei@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16639 6f19259b-4bc3-4df7-8a09-765794883524
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This PPI will always be installed to notify other drivers that TPM initialization action is done. TPM initialization may success or fail, or even not present.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: "Yao, Jiewen" <jiewen.yao@intel.com>
Reviewed-by: "Dong, Guo" <guo.dong@intel.com>
Reviewed-by: "Chiu, Chasel" <chasel.chiu@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16638 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: "Yao, Jiewen" <jiewen.yao@intel.com>
Reviewed-by: "Qiu, Shumin" <shumin.qiu@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16637 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Elvin Li <elvin.li@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16636 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Shumin Qiu <shumin.qiu@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16635 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Qiu Shumin <shumin.qiu@intel.com>
Reviewed-by: Jaben Carsey <Jaben.carsey@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16634 6f19259b-4bc3-4df7-8a09-765794883524
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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Tim He <tim.he@intel.com>
Reviewed-by: David Wei <david.wei@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16631 6f19259b-4bc3-4df7-8a09-765794883524
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