diff options
| author | Chen Fan <chen.fan.fnst@cn.fujitsu.com> | 2014-11-13 18:29:13 +0000 |
|---|---|---|
| committer | jljusten <jljusten@Edk2> | 2014-11-13 18:29:13 +0000 |
| commit | ac9dbb3b03313c7426c5bb15663b20b57ca771ce (patch) | |
| tree | b0508860d80959af572753abd09e7a86802b51a5 /UefiCpuPkg/CpuDxe/ApStartup.c | |
| parent | fe078dd57f5e935c28eac7348b758ca6fb5e696f (diff) | |
UefiCpuPkg/CpuDxe: introduce ResetApStackless()
If timeout expires before AP returns from Procedure, the AP should
be terminated, we introduce ResetApStackLess() to send init IPI
to let AP exit Procedurce and re-available.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16366 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'UefiCpuPkg/CpuDxe/ApStartup.c')
| -rw-r--r-- | UefiCpuPkg/CpuDxe/ApStartup.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/UefiCpuPkg/CpuDxe/ApStartup.c b/UefiCpuPkg/CpuDxe/ApStartup.c index 801f7f8611..7613b47942 100644 --- a/UefiCpuPkg/CpuDxe/ApStartup.c +++ b/UefiCpuPkg/CpuDxe/ApStartup.c @@ -328,3 +328,20 @@ StartApsStackless ( return EFI_SUCCESS;
}
+/**
+ Resets the Application Processor and directs it to jump to the
+ specified routine.
+
+ The processor jumps to this code in flat mode, but the processor's
+ stack is not initialized.
+
+ @param ProcessorId the AP of ProcessorId was reset
+**/
+VOID
+ResetApStackless (
+ IN UINT32 ProcessorId
+ )
+{
+ SendInitSipiSipi (ProcessorId,
+ (UINT32)(UINTN)(VOID*) StartupCode);
+}
|