[edk2-devel] [Patch v2 3/6] UefiCpuPkg/MpInitLibUp: Add MpInitLibStartupAllCPUs API.

[Dong, Eric]

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/MpInitLibUp/MpInitLibUp.c | 38 ++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/UefiCpuPkg/Library/MpInitLibUp/MpInitLibUp.c b/UefiCpuPkg/Library/MpInitLibUp/MpInitLibUp.c
index 36c2bb5326..849600d5c2 100644
--- a/UefiCpuPkg/Library/MpInitLibUp/MpInitLibUp.c
+++ b/UefiCpuPkg/Library/MpInitLibUp/MpInitLibUp.c
@@ -405,3 +405,41 @@ MpInitLibWhoAmI (
   *ProcessorNumber = 0;
   return EFI_SUCCESS;
 }
+
+/**
+  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.
+
+  @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
+  )
+{
+  Procedure (ProcedureArgument);
+
+  return EFI_SUCCESS;
+}
-- 
2.21.0.windows.1


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