commit dee9376ffc6e5522bb5e50512b521952a5421fa5
author Jordan Justen <jordan.l.justen@intel.com> Thu Nov 13 18:30:09 2014 +0000
committer jljusten <jljusten@Edk2> Thu Nov 13 18:30:09 2014 +0000
tree 6620249a5b4f5a0d6fdaf571e2e11bd936e549e4
parent cd8c700b03e38e9389a8f13e193a431072802593

UefiCpuPkg/CpuDxe: Startup APs

This sequence should happen:
* CpuMp.c: Allocate a stack for the APs
* ApStartup.c: Send Start IPI to wake APs in 16-bit real mode
* MpAsm.S: AP enters CpuDxe driver code without stack
  - AP grabs a lock
  - AP sets up stack
  - AP calls CpuMp.c:ApEntryPointInC

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
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@16370 6f19259b-4bc3-4df7-8a09-765794883524

UefiCpuPkg/CpuDxe/CpuMp.c

diff --git a/UefiCpuPkg/CpuDxe/CpuMp.c b/UefiCpuPkg/CpuDxe/CpuMp.c
index 5d5c7db..2bc9f70 100644
--- a/UefiCpuPkg/CpuDxe/CpuMp.c
+++ b/UefiCpuPkg/CpuDxe/CpuMp.c
@@ -1500,6 +1500,9 @@
 

   PrepareAPStartupCode ();

 

+  StartApsStackless ();

+

+  DEBUG ((DEBUG_INFO, "Detect CPU count: %d\n", mMpSystemData.NumberOfProcessors));

   if (mMpSystemData.NumberOfProcessors == 1) {

     FreeApStartupCode ();

     FreePages (mCommonStack, EFI_SIZE_TO_PAGES (gMaxLogicalProcessorNumber * gApStackSize));