[edk2-devel] [Patch 2/5] UefiCpuPkg/MpInitLib: Add MpInitLibStartupAllCPUs API.
Dong, Eric
eric.dong at intel.com
Fri Jul 19 07:28:07 UTC 2019
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1973
Add new MpInitLibStartupAllCPUs API uses to start all processors
at the same time.
Cc: Ray Ni <ray.ni at intel.com>
Cc: Laszlo Ersek <lersek at redhat.com>
Cc: Chandana Kumar <chandana.c.kumar at intel.com>
Cc: Star Zeng <star.zeng at intel.com>
Signed-off-by: Eric Dong <eric.dong at intel.com>
---
UefiCpuPkg/Library/MpInitLib/DxeMpLib.c | 1 +
UefiCpuPkg/Library/MpInitLib/MpLib.c | 74 ++++++++++++++++++++++++-
UefiCpuPkg/Library/MpInitLib/MpLib.h | 2 +
UefiCpuPkg/Library/MpInitLib/PeiMpLib.c | 1 +
4 files changed, 75 insertions(+), 3 deletions(-)
diff --git a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
index 6be1bae464..69c34afdf1 100644
--- a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
@@ -571,6 +571,7 @@ MpInitLibStartupAllAPs (
Status = StartupAllAPsWorker (
Procedure,
SingleThread,
+ FALSE,
WaitEvent,
TimeoutInMicroseconds,
ProcedureArgument,
diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c
index 6f51bc4ebf..791f5e85ab 100644
--- a/UefiCpuPkg/Library/MpInitLib/MpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c
@@ -2130,6 +2130,7 @@ MpInitLibGetNumberOfProcessors (
number. If FALSE, then all the enabled APs
execute the function specified by Procedure
simultaneously.
+ @param[in] IncludeBsp Whether let BSP also trig this task.
@param[in] WaitEvent The event created by the caller with CreateEvent()
service.
@param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for
@@ -2154,6 +2155,7 @@ EFI_STATUS
StartupAllAPsWorker (
IN EFI_AP_PROCEDURE Procedure,
IN BOOLEAN SingleThread,
+ IN BOOLEAN IncludeBsp,
IN EFI_EVENT WaitEvent OPTIONAL,
IN UINTN TimeoutInMicroseconds,
IN VOID *ProcedureArgument OPTIONAL,
@@ -2175,7 +2177,7 @@ StartupAllAPsWorker (
*FailedCpuList = NULL;
}
- if (CpuMpData->CpuCount == 1) {
+ if (CpuMpData->CpuCount == 1 && !IncludeBsp) {
return EFI_NOT_STARTED;
}
@@ -2218,9 +2220,9 @@ StartupAllAPsWorker (
}
}
- if (!HasEnabledAp) {
+ if (!HasEnabledAp && !IncludeBsp) {
//
- // If no enabled AP exists, return EFI_NOT_STARTED.
+ // If no enabled AP exists and not include Bsp to do the procedure, return EFI_NOT_STARTED.
//
return EFI_NOT_STARTED;
}
@@ -2266,6 +2268,13 @@ StartupAllAPsWorker (
}
}
+ if (IncludeBsp) {
+ //
+ // Start BSP.
+ //
+ Procedure (ProcedureArgument);
+ }
+
Status = EFI_SUCCESS;
if (WaitEvent == NULL) {
do {
@@ -2411,3 +2420,62 @@ GetCpuMpDataFromGuidedHob (
return CpuMpData;
}
+/**
+ This service executes a caller provided function on all enabled CPUs.
+
+ @param[in] Procedure A pointer to the function to be run on
+ enabled APs of the system. See type
+ EFI_AP_PROCEDURE.
+ @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for
+ APs to return from Procedure, either for
+ blocking or non-blocking mode. Zero means
+ infinity.
+ @param[in] ProcedureArgument The parameter passed into Procedure for
+ all APs.
+ @param[out] FailedCpuList If NULL, this parameter is ignored. Otherwise,
+ if all APs finish successfully, then its
+ content is set to NULL. If not all APs
+ finish before timeout expires, then its
+ content is set to address of the buffer
+ holding handle numbers of the failed APs.
+ The buffer is allocated by MP Initialization
+ library, and it's the caller's responsibility to
+ free the buffer with FreePool() service.
+ In blocking mode, it is ready for consumption
+ when the call returns. In non-blocking mode,
+ it is ready when WaitEvent is signaled. The
+ list of failed CPU is terminated by
+ END_OF_CPU_LIST.
+
+ @retval EFI_SUCCESS In blocking mode, all CPUs have finished before
+ the timeout expired.
+ @retval EFI_SUCCESS In non-blocking mode, function has been dispatched
+ to all enabled CPUs.
+ @retval EFI_DEVICE_ERROR Caller processor is AP.
+ @retval EFI_NOT_READY Any enabled APs are busy.
+ @retval EFI_NOT_READY MP Initialize Library is not initialized.
+ @retval EFI_TIMEOUT In blocking mode, the timeout expired before
+ all enabled APs have finished.
+ @retval EFI_INVALID_PARAMETER Procedure is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+MpInitLibStartupAllCPUs (
+ IN EFI_AP_PROCEDURE Procedure,
+ IN UINTN TimeoutInMicroseconds,
+ IN VOID *ProcedureArgument OPTIONAL,
+ OUT UINTN **FailedCpuList OPTIONAL
+ )
+{
+ return StartupAllAPsWorker (
+ Procedure,
+ FALSE,
+ TRUE,
+ NULL,
+ TimeoutInMicroseconds,
+ ProcedureArgument,
+ FailedCpuList
+ );
+}
+
diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.h b/UefiCpuPkg/Library/MpInitLib/MpLib.h
index f89037c59e..fce7961a98 100644
--- a/UefiCpuPkg/Library/MpInitLib/MpLib.h
+++ b/UefiCpuPkg/Library/MpInitLib/MpLib.h
@@ -405,6 +405,7 @@ InitMpGlobalData (
number. If FALSE, then all the enabled APs
execute the function specified by Procedure
simultaneously.
+ @param[in] IncludeBsp Whether let BSP also trig this task.
@param[in] WaitEvent The event created by the caller with CreateEvent()
service.
@param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for
@@ -429,6 +430,7 @@ EFI_STATUS
StartupAllAPsWorker (
IN EFI_AP_PROCEDURE Procedure,
IN BOOLEAN SingleThread,
+ IN BOOLEAN IncludeBsp,
IN EFI_EVENT WaitEvent OPTIONAL,
IN UINTN TimeoutInMicroseconds,
IN VOID *ProcedureArgument OPTIONAL,
diff --git a/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c b/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c
index 35dff91fd2..a3e568b056 100644
--- a/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c
@@ -404,6 +404,7 @@ MpInitLibStartupAllAPs (
return StartupAllAPsWorker (
Procedure,
SingleThread,
+ FALSE,
NULL,
TimeoutInMicroseconds,
ProcedureArgument,
--
2.21.0.windows.1
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