From 158990b941e461f69b8ec89bd6c9d0650aeb6188 Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Sun, 13 Mar 2016 18:08:45 +0100
Subject: [PATCH] ArmVirtPkg: PlatformIntelBdsLib: signal
 gRootBridgesConnectedEventGroupGuid

The explanation is in the patch titled

  OvmfPkg: introduce gRootBridgesConnectedEventGroupGuid

At this point, this signal doesn't do anything yet.

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
---
 ArmVirtPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.c   | 6 ++++++
 .../Library/PlatformIntelBdsLib/PlatformIntelBdsLib.inf     | 1 +
 2 files changed, 7 insertions(+)

diff --git a/ArmVirtPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.c b/ArmVirtPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.c
index 9267a188e8..02d698b455 100644
--- a/ArmVirtPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.c
+++ b/ArmVirtPkg/Library/PlatformIntelBdsLib/IntelBdsPlatform.c
@@ -25,6 +25,7 @@
 #include <Protocol/PciIo.h>
 #include <Protocol/PciRootBridgeIo.h>
 #include <Guid/EventGroup.h>
+#include <Guid/RootBridgesConnectedEventGroup.h>
 
 #include "IntelBdsPlatform.h"
 
@@ -369,6 +370,11 @@ PlatformBdsPolicyBehavior (
   //
   FilterAndProcess (&gEfiPciRootBridgeIoProtocolGuid, NULL, Connect);
 
+  //
+  // Signal the ACPI platform driver that it can download QEMU ACPI tables.
+  //
+  EfiEventGroupSignal (&gRootBridgesConnectedEventGroupGuid);
+
   //
   // Find all display class PCI devices (using the handles from the previous
   // step), and connect them non-recursively. This should produce a number of
diff --git a/ArmVirtPkg/Library/PlatformIntelBdsLib/PlatformIntelBdsLib.inf b/ArmVirtPkg/Library/PlatformIntelBdsLib/PlatformIntelBdsLib.inf
index 79ba7b2afb..f104accc03 100644
--- a/ArmVirtPkg/Library/PlatformIntelBdsLib/PlatformIntelBdsLib.inf
+++ b/ArmVirtPkg/Library/PlatformIntelBdsLib/PlatformIntelBdsLib.inf
@@ -71,6 +71,7 @@
   gEfiFileSystemInfoGuid
   gEfiFileSystemVolumeLabelInfoIdGuid
   gEfiEndOfDxeEventGroupGuid
+  gRootBridgesConnectedEventGroupGuid
 
 [Protocols]
   gEfiDevicePathProtocolGuid
-- 
2.39.2