[edk2-devel] [Patch 1/5] UefiCpuPkg/Include/MpInitLib.h: Add MpInitLibStartupAllCPUs API.
Dong, Eric
eric.dong at intel.com
Fri Jul 19 07:28:06 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/Include/Library/MpInitLib.h | 48 ++++++++++++++++++++++++++
1 file changed, 48 insertions(+)
diff --git a/UefiCpuPkg/Include/Library/MpInitLib.h b/UefiCpuPkg/Include/Library/MpInitLib.h
index fa82529373..3f06dcf558 100644
--- a/UefiCpuPkg/Include/Library/MpInitLib.h
+++ b/UefiCpuPkg/Include/Library/MpInitLib.h
@@ -344,4 +344,52 @@ MpInitLibWhoAmI (
OUT UINTN *ProcessorNumber
);
+/**
+ 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
+ );
+
#endif
--
2.21.0.windows.1
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#44017): https://edk2.groups.io/g/devel/message/44017
Mute This Topic: https://groups.io/mt/32524457/1813853
Group Owner: devel+owner at edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [edk2-devel-archive at redhat.com]
-=-=-=-=-=-=-=-=-=-=-=-
More information about the edk2-devel-archive
mailing list