[edk2-devel] [PATCH 07/18] UefiCpuPkg: Install gEdkiiEndOfS3ResumeGuid in S3Resume

["duntan" <dun.tan@intel.com>]

Install gEdkiiEndOfS3ResumeGuid in S3Resume to trigger
callback registered by PeiMpLib. The callback is to
relocate Ap to new safe memory before jump to OS waking
vector in S3 boot flow.

Signed-off-by: Dun Tan <dun.tan@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Jiaxin Wu <jiaxin.wu@intel.com>
---
 UefiCpuPkg/Universal/Acpi/S3Resume2Pei/S3Resume.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/UefiCpuPkg/Universal/Acpi/S3Resume2Pei/S3Resume.c b/UefiCpuPkg/Universal/Acpi/S3Resume2Pei/S3Resume.c
index a8e9c92a93..98badc74ae 100644
--- a/UefiCpuPkg/Universal/Acpi/S3Resume2Pei/S3Resume.c
+++ b/UefiCpuPkg/Universal/Acpi/S3Resume2Pei/S3Resume.c
@@ -260,6 +260,12 @@ EFI_PEI_PPI_DESCRIPTOR  mPpiListS3SmmInitDoneTable = {
   0
 };
 
+EFI_PEI_PPI_DESCRIPTOR  mPpiListEndOfS3ResumeTable = {
+  (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
+  &gEdkiiEndOfS3ResumeGuid,
+  0
+};
+
 //
 // Global Descriptor Table (GDT)
 //
@@ -490,6 +496,13 @@ S3ResumeBootOs (
   PERF_INMODULE_BEGIN ("EndOfS3Resume");
 
   DEBUG ((DEBUG_INFO, "Signal EndOfS3Resume\n"));
+
+  //
+  // Install EndOfS3Resume.
+  //
+  Status = PeiServicesInstallPpi (&mPpiListEndOfS3ResumeTable);
+  ASSERT_EFI_ERROR (Status);
+
   //
   // Signal EndOfS3Resume to SMM.
   //
-- 
2.31.1.windows.1



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