Commit Graph

76 Commits

Author SHA1 Message Date
Dun Tan ede0bd1496 UefiCpuPkg: Update PT code to support enable collect performance
Update ProcTrace feature code to support enable collect performance
data by generating CYC and TSC packets. Add a new dynamic
PCD to indicate if enable performance collecting. In ProcTrace.c
code, if this new PCD is true, after check cpuid, CYC and TSC
packets will be generated by setting the corresponding MSR bits
feilds if supported.

Bugzila: https://bugzilla.tianocore.org/show_bug.cgi?id=4423
Signed-off-by: Dun Tan <dun.tan@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Xiao X Chen <xiao.x.chen@intel.com>
2023-04-26 09:19:51 +00:00
Dun Tan 61e2c83424 UefiCpuPkg: Update code to support enable ProcTrace only on BSP
Update code to support enable ProcTrace only on BSP. Add a new
dynamic PCD to indicate if enable ProcTrace only on BSP. In
ProcTrace.c code, if this new PCD is true, only allocate buffer
and set CtrlReg.Bits.TraceEn to 1 for BSP.

Bugzila: https://bugzilla.tianocore.org/show_bug.cgi?id=4423
Signed-off-by: Dun Tan <dun.tan@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Xiao X Chen <xiao.x.chen@intel.com>
2023-04-26 09:19:51 +00:00
Yu Pu b991aec050 UefiCpuLib: Remove UefiCpuLib.
Because UefiCpuPkg/UefiCpuLib is merged to MdePkg/CpuLib and all modules
are updated to not depend on this library, remove it completely.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Yu Pu <yu.pu@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>
2023-04-12 06:54:38 +00:00
Wu, Jiaxin 7b8c5a8eb4 UefiCpuPkg/SmmBaseHob.h: Add SMM Base HOB Data
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4337

The default SMBASE for the x86 processor is 0x30000. When
SMI happens, processor runs the SMI handler at SMBASE+0x8000.
Also, the SMM save state area is within SMBASE+0x10000.

One of the SMM initialization from processor perspective is to
relocate and program the new SMBASE (in TSEG range) for each
processor. When the SMBASE relocation happens in a PEI module,
the PEI module shall produce the SMM_BASE_HOB in HOB database
which tells the PiSmmCpuDxeSmm driver (runs at a later phase)
about the new SMBASE for each processor. PiSmmCpuDxeSmm driver
installs the SMI handler at the SMM_BASE_HOB.SmBase[Index]+0x8000
for processor Index. When the HOB doesn't exist, PiSmmCpuDxeSmm
driver shall relocate and program the new SMBASE itself.

This patch adds the SMM Base HOB for any PEI module to do
the SmBase relocation ahead of PiSmmCpuDxeSmm driver and
store the relocated SmBase address in array for each
processor.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Zeng Star <star.zeng@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Jiaxin Wu <jiaxin.wu@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Ray Ni <ray.ni@Intel.com>
2023-03-06 06:07:48 +00:00
Sunil V L d6017bca19 UefiCpuPkg: Add RISCV_EFI_BOOT_PROTOCOL related definitions
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4076

RISC-V UEFI based platforms need to support RISCV_EFI_BOOT_PROTOCOL.
Add this protocol GUID definition and the header file required.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Daniel Schaefer <git@danielschaefer.me>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Abner Chang <abner.chang@amd.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Andrei Warkentin <andrei.warkentin@intel.com>
Acked-by: Ray Ni <ray.ni@intel.com>
2023-02-16 05:53:28 +00:00
Min M Xu a89f558d3c OvmfPkg/UefiCpuPkg/UefiPayloadPkg: Rename VmgExitLib to CcExitLib
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4123

VmgExitLib once was designed to provide interfaces to support #VC handler
and issue VMGEXIT instruction. After TDVF (enable TDX feature in OVMF) is
introduced, this library is updated to support #VE as well. Now the name
of VmgExitLib cannot reflect what the lib does.

This patch renames VmgExitLib to CcExitLib (Cc means Confidential
Computing). This is a simple renaming and there is no logic changes.
After renaming all the VmgExitLib related codes are updated with
CcExitLib. These changes are in OvmfPkg/UefiCpuPkg/UefiPayloadPkg.

Cc: Guo Dong <guo.dong@intel.com>
Cc: Sean Rhodes <sean@starlabs.systems>
Cc: James Lu <james.lu@intel.com>
Cc: Gua Guo <gua.guo@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: James Lu <james.lu@intel.com>
Reviewed-by: Gua Guo <gua.guo@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
2022-11-14 04:55:34 +00:00
Wu, Jiaxin 76ec17526b UefiCpuPkg: Add PCD to control SMRR enable & SmmFeatureControl support
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3962

Two SMM variables (mSmrrSupported & mSmmFeatureControlSupported) are global
variables, they control whether the SMRR and SMM Feature Control MSR will
be restored respectively.
To avoid the TOCTOU, add PCD to control SMRR & SmmFeatureControl enable.

Cc: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: Jiaxin Wu <jiaxin.wu@intel.com>
2022-08-31 04:23:55 +00:00
Ray Ni 75e3c2435c UefiCpuPkg: Create CpuPageTableLib for manipulating X86 paging structs
The lib includes two APIs:
* PageTableMap
  It creates/updates mapping from LA to PA.
  The implementation only supports paging structures used in 64bit
  mode now. PAE paging structure support will be added in future.

* PageTableParse
   It parses the page table and returns the mapping relations in an
  array of IA32_MAP_ENTRY.

It passed some stress tests. These test code will be upstreamed in
other patches following edk2 Unit Test framework.

Signed-off-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
2022-08-09 07:08:05 +00:00
Li, Zhihao 8079d4dc4f MdePkg: add SmmCpuRendezvousLib.h and SmmCpuRendezvousLibNull implement.
REF? https://bugzilla.tianocore.org/show_bug.cgi?id=3912

UefiCpuPkg define a new Protocol with the new services
SmmWaitForAllProcessor(), which can be used by SMI handler
to optionally wait for other APs to complete SMM rendezvous in
relaxed AP mode.

VariableSmm and VariableStandaloneMM driver in MdeModulePkg need
to use this services but MdeModulePkg can't depend on UefiCpuPkg.

Thus, the solution is moving SmmCpuRendezvouslib.h from UefiCpuPkg
to MdePkg and creating SmmCpuRendezvousLib NullLib version
implementation in MdePkg as dependency for the pkg that can't
depend on UefiCpuPkg.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Michael Kubacki <mikuback@linux.microsoft.com>
Cc: Siyuan Fu <siyuan.fu@intel.com>

Signed-off-by: Zhihao Li <zhihao.li@intel.com>
Acked-by: Liming Gao <gaoliming@byosoft.com.cn>
2022-05-09 02:04:11 +00:00
Li, Zhihao 4a68176cb5 UefiCpuPkg: Extend SMM CPU Service with rendezvous support.
REF? https://bugzilla.tianocore.org/show_bug.cgi?id=3815

This patch define a new Protocol with the new services
SmmWaitForAllProcessor(), which can be used by SMI handler
to optionally wait for other APs to complete SMM rendezvous in
relaxed AP mode.

A new library SmmCpuRendezvousLib is provided to abstract the service
into library API to simple SMI handler code.

Cc: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Siyuan Fu <siyuan.fu@intel.com>
Cc: Zhihao Li <zhihao.li@intel.com>

Signed-off-by: Zhihao Li <zhihao.li@intel.com>
2022-03-04 05:44:42 +00:00
Brijesh Singh via groups.io f4e3ce5f53 UefiCpuPkg: add PcdGhcbHypervisorFeatures
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3275

Version 2 of the GHCB specification added a new VMGEXIT that the guest
could use for querying the hypervisor features. One of the immediate
users for it will be an AP creation code. When SEV-SNP is enabled, the
guest can use the newly added AP_CREATE VMGEXIT to create the APs.

The MpInitLib will check the hypervisor feature, and if AP_CREATE is
available, it will use it.

See GHCB spec version 2 for more details on the VMGEXIT.

Cc: Michael Roth <michael.roth@amd.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Ray Ni <ray.ni@Intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
2021-12-09 06:28:10 +00:00
Ray Ni 1a957f17bc UefiCpuPkg: Add MicrocodeLib for loading microcode
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3303
Signed-off-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
2021-04-09 01:43:18 +00:00
Lou, Yun 83facfd184 UefiCpuPkg/CpuCacheInfoLib: Add new CpuCacheInfoLib.
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3105

This new library uses a platform agnostic algorithm to get CPU
cache information. It provides user with an API(GetCpuCacheInfo)
to get detailed CPU cache information by each package, each core
type included in this package, and each cache level & type.
This library can be used by code that produces SMBIOS_TABLE_TYPE7
SMBIOS table.

Signed-off-by: Jason Lou <yun.lou@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
2021-01-19 14:03:04 +00:00
Tom Lendacky 88a363009a UefiCpuPkg: Create an SEV-ES workarea PCD
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2198

Create an SEV-ES workarea PCD. This PCD will be used for BSP communication
during SEC and for AP startup during PEI and DXE phases, the latter is the
reason for creating it in the UefiCpuPkg.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
2020-08-17 02:46:39 +00:00
Tom Lendacky 8714978781 UefiCpuPkg: Implement library support for VMGEXIT
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2198

To support handling #VC exceptions and issuing VMGEXIT instructions,
create a library with functions that can be used to perform these
#VC/VMGEXIT related operations. This includes functions for:
  - Handling #VC exceptions
  - Preparing for and issuing a VMGEXIT
  - Performing MMIO-related write operations to support flash emulation
  - Performing AP related boot opeations

The base functions in this driver will not do anything and will return
an error if a return value is required. It is expected that other packages
(like OvmfPkg) will create a version of the library to fully support an
SEV-ES guest.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
2020-08-16 16:45:42 +00:00
Tom Lendacky c9db7bf10a UefiCpuPkg: Create PCD to be used in support of SEV-ES
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2198

A new dynamic UefiCpuPkg PCD is needed to support SEV-ES under OVMF:
  - PcdSevEsIsEnabled: BOOLEAN value used to indicate if SEV-ES is enabled

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
2020-08-16 16:45:42 +00:00
Michael Kubacki 479613bd06 UefiCpuPkg/SecMigrationPei: Add initial PEIM (CVE-2019-11098)
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=1614

Adds a PEIM that republishes structures produced in SEC. This
is done because SEC modules may not be shadowed in some platforms
due to space constraints or special alignment requirements. The
SecMigrationPei module locates interfaces that may be published in
SEC and reinstalls the interface with permanent memory addresses.

This is important if pre-memory address access is forbidden after
memory initialization and data such as a PPI descriptor, PPI GUID,
or PPI inteface reside in pre-memory.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Debkumar De <debkumar.de@intel.com>
Cc: Harry Han <harry.han@intel.com>
Cc: Catharine West <catharine.west@intel.com>
Signed-off-by: Michael Kubacki <michael.a.kubacki@intel.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
2020-07-28 01:43:16 +00:00
Hao A Wu a1c35ff312 UefiCpuPkg/MpInitLib DXE: Add PCD to control AP status check interval
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=2627

The commit will introduce a static PCD to specify the periodic interval
for checking the AP status when MP services StartupAllAPs() and
StartupThisAP() are being executed in a non-blocking manner. Or in other
words, specifies the interval for callback function CheckApsStatus().

The purpose is to provide the platform owners with the ability to choose
the proper interval value to trigger CheckApsStatus() according to:
A) The number of processors in the system;
B) How MP services (StartupAllAPs & StartupThisAP) being used.

Setting the PCD to a small value means the AP status check callback will
be triggered more frequently, it can benefit the performance for the case
when the BSP uses WaitForEvent() or uses CheckEvent() in a loop to wait
for AP(s) to complete the task, especially when the task can be finished
considerably fast on AP(s).

An example is within function CpuFeaturesInitialize() under
UefiCpuPkg/Library/RegisterCpuFeaturesLib/DxeRegisterCpuFeaturesLib.c,
where BSP will perform the same task with APs and requires all the
processors to finish the task before BSP proceeds to its next task.

Setting the PCD to a big value, on the other hand, can reduce the impact
on BSP by the time being consumed in CheckApsStatus(), especially when the
number of processors is huge so that the time consumed in CheckApsStatus()
is not negligible.

The type of the PCD is UINT32, which means the maximum possible interval
value can be set to:
4,294,967,295 microseconds = 4,295 seconds = 71.58 minutes = 1.19 hours
which should be sufficient for usage.

For least impact, the default value of the new PCD will be the same with
the current interval value. It will be set to 100,000 microseconds, which
is 100 milliseconds.

Unitest done:
A) OS boot successfully;
B) Use debug message to confirm the 'TriggerTime' parameter for the
   'SetTimer' service is the same before & after this patch.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Brian J. Johnson <brian.johnson@hpe.com>
Signed-off-by: Hao A Wu <hao.a.wu@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2020-03-27 00:46:39 +00:00
Siyuan Fu c788c2b1ad UefiCpuPkg: Remove FIT based microcode shadow logic from MpInitLib.
Commit c7c964b and dd01704 add header file for FIT table and update
MpInitLib to support FIT based microcode shadow operation. There are
comments that FIT is Intel specific specification instead of industry
standard, which should not be placed in EDK2 MdePkg and UefiCpuPkg.
So this patch adds a platform PPI for the microcode shadow logic, and
remove the FIT related code from EDK2.
The FIT based microcode shadow support will be implemented as a new
platform PEIM in IntelSiliconPkg in edk2-platforms.
This patch doesn't provide a DXE version shadow microcode protocol,
a platform which only uses DxeMpInitLib instance only supports PCD
based microcode shadowing.

A detailed design doc can be found here:
https://edk2.groups.io/g/devel/files/Designs/2020/0214/Support%20
the%202nd%20Microcode%20FV%20Flash%20Region.pdf

TEST: Tested on FIT enabled platform.
BZ: https://tianocore.acgmultimedia.com/show_bug.cgi?id=2449

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Siyuan Fu <siyuan.fu@intel.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
2020-02-14 04:31:18 +00:00
Siyuan Fu dd01704111 UefiCpuPkg: Shadow microcode patch according to FIT microcode entry.
The existing MpInitLib will shadow the microcode update patches from
flash to memory and this is done by searching microcode region specified
by PCD PcdCpuMicrocodePatchAddress and PcdCpuMicrocodePatchRegionSize.
This brings a limition to platform FW that all the microcode patches must
be placed in one continuous flash space.

This patch shadows microcode update according to FIT microcode entries if
it's present, otherwise it will fallback to original logic (by PCD).

A new featured PCD gUefiCpuPkgTokenSpaceGuid.PcdCpuShadowMicrocodeByFit
is added for enabling/disabling this support.

TEST: Tested on FIT enabled platform.
BZ: https://tianocore.acgmultimedia.com/show_bug.cgi?id=2449

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Siyuan Fu <siyuan.fu@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2020-01-10 06:20:42 +00:00
Hao A Wu 253909974a UefiCpuPkg: Add definitions for EDKII microcode patch HOB
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=2430

This commit will add the definitions for EDKII microcode patch HOB.

The intention of adding this HOB is to provide a scheme to store the below
information:

A. The base address and size of the microcode patches that are being
   loaded (from flash) into memory;
B. The information of detected microcode patch for each processor within
   the system.

The producer of the HOB will be the UefiCpuPkg/MpInitLib (where the load,
detect and apply of the microcode happen). The consumer of the HOB can be
modules that want to detect/apply the microcode patch by themselves again
later during the boot flow.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Siyuan Fu <siyuan.fu@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: Hao A Wu <hao.a.wu@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
2020-01-02 03:10:36 +00:00
Eric Dong 9caaa79dd7 UefiCpuPkg/PiSmmCpuDxeSmm: Avoid allocate Token every time
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2388

Token is new introduced by MM MP Protocol. Current logic allocate Token
every time when need to use it. The logic caused SMI latency raised to
very high. Update logic to allocate Token buffer at driver's entry point.
Later use the token from the allocated token buffer. Only when all the
buffer have been used, then need to allocate new buffer.

Reviewed-by: Ray Ni <ray.ni@intel.com>
Signed-off-by: Eric Dong <eric.dong@intel.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
2019-12-06 06:41:16 +00:00
Laszlo Ersek 778832bcad UefiCpuPkg/MpInitLib: honor the platform's boot CPU count in AP detection
- If a platform boots such that the boot CPU count is smaller than
  PcdCpuMaxLogicalProcessorNumber, then the platform cannot use the "fast
  AP detection" logic added in commit 6e1987f19a. (Which has been
  documented as a subset of use case (2) in the previous patch.)

  Said logic depends on the boot CPU count being equal to
  PcdCpuMaxLogicalProcessorNumber. If the equality does not hold, the
  platform either has to wait too long, or risk missing APs due to an
  early timeout.

- The platform may not be able to use the variant added in commit
  0594ec417c either. (Which has been documented as use case (1) in the
  previous patch.)

  See commit 861218740d. When OVMF runs on QEMU/KVM, APs may check in
  with the BSP in arbitrary order, plus the individual AP may take
  arbitrarily long to check-in. If "NumApsExecuting" falls to zero
  mid-enumeration, APs will be missed.

Allow platforms to specify the exact boot CPU count, independently of
PcdCpuMaxLogicalProcessorNumber. In this mode, the BSP waits for all APs
to check-in regardless of timeout. If at least one AP fails to check-in,
then the AP enumeration hangs forever. That is the desired behavior when
the exact boot CPU count is known in advance. (A hung boot is better than
an AP checking-in after timeout, and executing code from released
storage.)

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1515
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
2019-10-11 23:20:09 +02:00
Ray Ni 136dad0956 UefiCpuPkg: Remove PcdCpuSmmStaticPageTable
PcdCpuSmmRestrictedMemoryAccess is introduced to replace
PcdCpuSmmStaticPageTable.

Signed-off-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2019-09-19 14:25:24 +08:00
Ray Ni f64a597d45 UefiCpuPkg: Explain relationship between several SMM PCDs
There are three PCDs that may impact the behavior of each other in
SMM environment:
  PcdCpuSmmProfileEnable
  PcdHeapGuardPropertyMask in MdeModulePkg
  PcdCpuSmmRestrictedMemoryAccess

The patch updates the comments in DEC file to document it.

Signed-off-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2019-09-04 01:00:11 +08:00
Ray Ni 87184487d2 UefiCpuPkg: Add PcdCpuSmmRestrictedMemoryAccess
The patch adds a new X64 only PCD PcdCpuSmmRestrictedMemoryAccess.
The PCD indicates access to non-SMRAM memory is restricted to
reserved, runtime and ACPI NVS type after SmmReadyToLock.
MMIO access is always allowed regardless of the value of this PCD.
Loose of such restriction is only required by RAS components in X64
platforms.
The PCD value is considered as constantly TRUE in IA32 platforms.
When the PCD value is TRUE, page table is initialized to cover all
memory spaces and the memory occupied by page table is protected by
page table itself as read-only.

Signed-off-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2019-09-04 01:00:10 +08:00
Donald Kuo 30781febe2 UefiCpuPkg: Adding a new TSC library by using CPUID(0x15) TSC leaf
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1909

Cc: Ray Ni <ray.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Amy Chan <amy.chan@intel.com>
Cc: Rangasai V Chaganty <rangasai.v.chaganty@intel.com>
Signed-off-by: Donald Kuo <donald.kuo@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
2019-08-21 21:36:56 +08:00
Eric Dong ebfbb70129 UefiCpuPkg: Add new EDKII_PEI_MP_SERVICES2_PPI
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1973

Add definition for new EDKII_PEI_MP_SERVICES2_PPI.

It includes all APIs existed in EFI_PEI_MP_SERVICES_PPI
and add new API EDKII_PEI_MP_SERVICES_STARTUP_ALL_CPUS.

Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Chandana Kumar <chandana.c.kumar@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
2019-07-29 09:25:20 +08:00
Michael D Kinney 0acd869796 UefiCpuPkg: Replace BSD License with BSD+Patent License
https://bugzilla.tianocore.org/show_bug.cgi?id=1373

Replace BSD 2-Clause License with BSD+Patent License.  This change is
based on the following emails:

  https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html
  https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html

RFCs with detailed process for the license change:

  V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html
  V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html
  V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
2019-04-09 10:58:28 -07:00
Eric Dong 6214ffb410 UefiCpuPkg/RegisterCpuFeaturesLib: Optimize PCD
PcdCpuFeaturesUserConfiguration.

Merge PcdCpuFeaturesUserConfiguration into PcdCpuFeaturesSetting.
Use PcdCpuFeaturesSetting as input for the user input feature setting
Use PcdCpuFeaturesSetting as output for the final CPU feature setting

BZ:https://bugzilla.tianocore.org/show_bug.cgi?id=1375

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
2019-04-04 14:11:01 +08:00
Jiewen Yao 3eb69b081c UefiCpuPkg/PiSmmCpu: Add Shadow Stack Support for X86 SMM.
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1521

We scan the SMM code with ROPgadget.
http://shell-storm.org/project/ROPgadget/
https://github.com/JonathanSalwan/ROPgadget/tree/master
This tool reports the gadget in SMM driver.

This patch enabled CET ShadowStack for X86 SMM.
If CET is supported, SMM will enable CET ShadowStack.
SMM CET will save the OS CET context at SmmEntry and
restore OS CET context at SmmExit.

Test:
1) test Intel internal platform (x64 only, CET enabled/disabled)
Boot test:
CET supported or not supported CPU
on CET supported platform
  CET enabled/disabled
  PcdCpuSmmCetEnable enabled/disabled
  Single core/Multiple core
  PcdCpuSmmStackGuard enabled/disabled
  PcdCpuSmmProfileEnable enabled/disabled
  PcdCpuSmmStaticPageTable enabled/disabled
CET exception test:
  #CF generated with PcdCpuSmmStackGuard enabled/disabled.
Other exception test:
  #PF for normal stack overflow
  #PF for NX protection
  #PF for RO protection
CET env test:
  Launch SMM in CET enabled/disabled environment (DXE) - no impact to DXE

The test case can be found at
https://github.com/jyao1/SecurityEx/tree/master/ControlFlowPkg

2) test ovmf (both IA32 and X64 SMM, CET disabled only)
test OvmfIa32/Ovmf3264, with -D SMM_REQUIRE.
  qemu-system-x86_64.exe -machine q35,smm=on -smp 4
    -serial file:serial.log
    -drive if=pflash,format=raw,unit=0,file=OVMF_CODE.fd,readonly=on
    -drive if=pflash,format=raw,unit=1,file=OVMF_VARS.fd
QEMU emulator version 3.1.0 (v3.1.0-11736-g7a30e7adb0-dirty)

3) not tested
IA32 CET enabled platform

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Yao Jiewen <jiewen.yao@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
2019-02-28 09:39:54 +08:00
Eric Dong 30142a32ac UefiCpuPkg: Update package version.
Cc: Star Zeng <star.zeng@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
2018-01-22 19:23:56 +08:00
Jian J Wang adb9f50e4b UefiCpuPkg/UefiCpuPkg.dec: Add two new PCDs for stack switch
Stack switch is required by Stack Guard feature. Following two PCDs are
introduced to simplify the resource allocation for initializing stack switch.

  gUefiCpuPkgTokenSpaceGuid.PcdCpuStackSwitchExceptionList
  gUefiCpuPkgTokenSpaceGuid.PcdCpuKnownGoodStackSize

PcdCpuStackSwitchExceptionList is used to specify which exception will
have separate stack for its handler. For Stack Guard feature, #PF must
be specified at least.

PcdCpuKnownGoodStackSize is used to specify the size of knwon good stack for an
exception handler. Cpu driver or other drivers should use this PCD to reserve
new stack memory for exceptions specified by above PCD.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Suggested-by: Ayellet Wolman <ayellet.wolman@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Jeff Fan <vanjeff_919@hotmail.com>
Reviewed-by: Jiewen.yao@intel.com
2017-12-08 14:38:46 +08:00
Star Zeng 1015fb3c1b UefiCpuPkg PiSmmCpuDxeSmm: SMM profile and static paging mutual exclusion
SMM profile and static paging could not be enabled at the same time,
this patch is to add check and comments to make sure it.

Similar comments are also added for the case of static paging and
heap guard for SMM.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2017-12-08 12:29:24 +08:00
Star Zeng c8a2f3c332 IntelSiliconPkg: Move MicrocodeUpdate from UefiCpuPkg
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=540

To consume FIT table for Microcode update,
UefiCpuPkg/Feature/Capsule/MicrocodeUpdateDxe
needs to be updated to consume
IntelSiliconPkg/Include/IndustryStandard/FirmwareInterfaceTable.h,
but UefiCpuPkg could not depend on IntelSiliconPkg.

Since the Microcode update feature is specific to Intel,
we can first move the Microcode update feature code from
UefiCpuPkg to IntelSiliconPkg [first step], then update
the code to consume FIT table [second step].

This patch series is for the first step.

Note: No any code change in this patch, just move.
Next patch will update MicrocodeUpdate to build with the package.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Regression-tested-by: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
2017-11-30 09:25:28 +08:00
Eric Dong 34b6a0e222 UefiCpuPkg: Update default for PcdCpuProcTraceMemSize/PcdCpuProcTraceOutputScheme.
These two definitions have redundant definition which can be handle by code.
This patch update them to follow new code definitions.

V2: Add more comments for the PCDs and keep consistent in .dec and .uni files.

Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
2017-08-28 15:13:49 +08:00
Eric Dong 234d4c5fe6 UefiCpuPkg: Add comments for PCDs definition.
Add valid/default values for PCD PcdCpuProcTraceMemSize and
PcdCpuProcTraceOutputScheme in the comment part.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
2017-08-16 16:16:17 +08:00
Eric Dong c7399a0cec UefiCpuPkg: Add Pcds used by processor trace feature.
Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
2017-08-04 12:26:43 +08:00
Jeff Fan 9304197261 UefiCpuPkg: Update package version to 0.80
Cc: Feng Tian <feng.tian@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
2017-05-08 13:23:14 +08:00
Dandan Bi 245e98bfcb UefiCpuPkg: Fix typos in UefiCpuPkg.dec
Cc: Jeff Fan <jeff.fan@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
2017-04-06 09:02:36 +08:00
Jeff Fan 98eb009563 UefiCpuPkg: Add new PCDs PROMPT/HELP string in UNI file
Correct PCD declaration comments and add new PCDs in UNI file.

Cc: Feng Tian <feng.tian@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
2017-03-28 09:00:15 +08:00
Jeff Fan 82e75ac65a UefiCpuPkg: Add CPU Features PEI/DXE drivers
They will consume Register CPU Features library to detect and initialize CPU
features.

CpuFeaturesPei driver is used to initialize CPU features in PEI phase.
CpuFeaturesDxe driver is used to initialize CPU features in DXE phase.

Add PcdCpuFeaturesInitAfterSmmRelocation and PcdCpuFeaturesInitOnS3Resume
that consumed by CpuFeaturesPei and CpuFeaturesDxe.

Cc: Feng Tian <feng.tian@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
2017-03-22 10:12:02 +08:00
Jeff Fan 0a70d1c304 UefiCpuPkg: Add NULL CPU Common Features Library instance
This NULL CPU common Features Library instance will register some CPU features
defined in Intel(R) 64 and IA-32 Architectures Software Developer's Manual,
Volume 3, September 2016, Chapter 35 Model-Specific-Registers (MSR).

Add PCD PcdCpuClockModulationDutyCycle and PcdIsPowerOnReset consumed by NULL
CPU Common Features Library instance.

v2:
  1. Using MSR_IA32_EFER to enable/disable NX feature instead of using
     MSR_IA32_MISC_ENABLE.
  2. Fix bug that SMX and VMX feature is swapped.

v3:
  1. Add AesniGetConfigData() to get current register state.

v5:
  Move MSR reading from AesniGetConfigData() to AesniSupport().

Cc: Feng Tian <feng.tian@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
2017-03-22 10:11:58 +08:00
Jeff Fan 548013c07f UefiCpuPkg/Include/Library: Add Register CPU Features Library
Register CPU Features Library is used to register/manage/program CPU features.
NULL CPU features library instance could consume it register CPU features
functions.
CPU Feature module could consume this library to detect/analysis/program CPU
features on BSP/APs.

v4:
  Fix GCC build issue.

Cc: Feng Tian <feng.tian@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
2017-03-22 10:11:49 +08:00
Jeff Fan e000e774cd UefiCpuPkg: Add GUID gEdkiiCpuFeaturesInitDoneGuid
GUID gEdkiiCpuFeaturesInitDoneGuid is used to indicate if CPU features have been
initialized.

On PEI phase, one gEdkiiCpuFeaturesInitDoneGuid PPI will be installed after CPU
features initialized.
On DXE phase, one gEdkiiCpuFeaturesInitDoneGuid Protocol will be installed after
CPU features initialized.

Cc: Feng Tian <feng.tian@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
2017-03-22 10:11:45 +08:00
Jeff Fan 98f4a5653d UefiCpuPkg: Add GUID gEdkiiCpuFeaturesSetDoneGuid
GUID gEdkiiCpuFeaturesSetDoneGuid is used to indicate if CPU feature related
setting are set finished. For example, PCD PcdCpuFeaturesUserConfiguration.

On PEI phase, one gEdkiiCpuFeaturesSetDoneGuid PPI will be installed after
platform set CPU feature setting.
On DXE phase, one gEdkiiCpuFeaturesSetDoneGuid Protocol will be installed after
platform set CPU feature setting.

Cc: Feng Tian <feng.tian@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
2017-03-22 10:11:41 +08:00
Jeff Fan 7eee4e1e3c UefiCpuPkg/UefiCpuPkg.dec: Add a set of CPU features PCDs
PcdCpuFeaturesSupport supports PcdsFixedAtBuild/PcdsPatchableInModule types and
used to add/remove CPU feature from firmware during build time.

PcdCpuFeaturesUserConfiguration supports all PCD types and used to configurate
CPU features by platforms.

PcdCpuFeaturesCapability supports PcdsDynamic PCD and used to indicate the CPU
features capability on processors.

PcdCpuFeaturesSetting supports PcdsDynamic PCD and used to indicate the current
CPU features setting on processors.

Cc: Feng Tian <feng.tian@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
2017-03-22 10:11:38 +08:00
Michael Kinney f7c11c534c UefiCpuPkg: Add STM GUIDs, Protocols, and PCDs
* Add GUIDed HOB that described MSEG region in SMRAM
* Add SM Monitor Init Protocol
* Add PCD to configure size of SMM exception stack
* Add PCD to configure MSEG region size if it is not
  described by the gMsegSmramGuid GUIDed HOB.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
2016-12-19 09:32:34 +08:00
Laszlo Ersek b43dd22981 UefiCpuPkg/PiSmmCpuDxeSmm: dynamic PcdCpuSmmApSyncTimeout, PcdCpuSmmSyncMode
Move the declaration of these PCDs from the

  [PcdsFixedAtBuild, PcdsPatchableInModule]

section of "UefiCpuPkg/UefiCpuPkg.dec" to the

  [PcdsFixedAtBuild, PcdsPatchableInModule, PcdsDynamic, PcdsDynamicEx]

section. Their types, default values, and token values remain unchanged.

Only UefiCpuPkg/PiSmmCpuDxeSmm consumes these PCDs, specifically on the
call stack of its entry point function, and it turns them into static or
dynamically allocated data in SMRAM:

  PiCpuSmmEntry()                            [PiSmmCpuDxeSmm.c]
    InitializeSmmTimer()                     [SyncTimer.c]
      PcdCpuSmmApSyncTimeout
      -> mTimeoutTicker
    InitializeMpServiceData()                [MpService.c]
      InitializeMpSyncData()                 [MpService.c]
        PcdCpuSmmSyncMode
        -> mSmmMpSyncData->EffectiveSyncMode

However, there's another call path to fetching "PcdCpuSmmSyncMode", namely

  SmmInitHandler()                           [PiSmmCpuDxeSmm.c]
    InitializeMpSyncData()                   [MpService.c]
      PcdCpuSmmSyncMode
      -> mSmmMpSyncData->EffectiveSyncMode

and this path is exercised during S3 resume (as stated by the comment in
SmmInitHandler() too, "Initialize private data during S3 resume").

While we can call the PCD protocol (via PcdLib) for fetching dynamic PCDs
in the entry point function, we cannot do that at S3 resume. Therefore
pre-fetch PcdCpuSmmSyncMode into a new global variable (which lives in
SMRAM) in InitializeMpServiceData(), just before calling
InitializeMpSyncData(). This way InitializeMpSyncData() can retrieve the
stashed PCD value from SMRAM, regardless of the boot mode.

Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=230
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
2016-11-22 09:02:54 +01:00
Jiewen Yao 28b020b5de UefiCpuPkg/dec: Add PcdCpuSmmStaticPageTable.
If enabled, SMM will not use on-demand paging.
SMM will build static page table for all memory.

The page table size depend on 2 things:
1) The 1G paging capability.
2) The whole system memory/MMIO addressing capability.

A) If the system only supports 2M paging,
When the whole memory/MMIO is 32bit, we only need 1+1+4=6 pages for 4G.
When the whole memory/MMIO is 39bit, we need 1+1+256 pages (~ 1M)
When the whole memory/MMIO is 48bit, we need 1+256+256*256 pages (~ 257M)

B) If the system supports 1G paging.
When the whole memory/MMIO is 32bit, we only need 1+1+4=6 pages for 4G.
(We still generate 2M page for maintenance consideration.)
When the whole memory/MMIO is 39bit, we still need 6 pages.
(We setup 1G paging for >1G.)
When the whole memory/MMIO is 48bit, we need 1+256 pages (~ 1M).

Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
2016-11-17 16:30:05 +08:00