[PATCH edk2-platforms v3 1/4] Silicon/Hisilicon: Change updating dsdt in ready to boot event

["Ming Huang" <huangming23@huawei.com>]

The dsdt need be updated before boot to OS, so change the updating
to ready to boot event and can remove the needless dependence.

Signed-off-by: Ming Huang <huangming23@huawei.com>
Reviewed-by: Leif Lindholm <leif@nuviainc.com>
---
 Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatform.c      | 56 +++++++++++++++++++-
 Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatformDxe.inf |  4 +-
 2 files changed, 56 insertions(+), 4 deletions(-)

diff --git a/Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatform.c b/Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatform.c
index b888cb1..c45a0bb 100644
--- a/Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatform.c
+++ b/Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatform.c
@@ -1,7 +1,7 @@
 /** @file
 
   Copyright (c) 2014, Applied Micro Curcuit Corporation. All rights reserved.<BR>
-  Copyright (c) 2015, Hisilicon Limited. All rights reserved.<BR>
+  Copyright (c) 2015 - 2020, Hisilicon Limited. All rights reserved.<BR>
   Copyright (c) 2015, Linaro Limited. All rights reserved.<BR>
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
@@ -23,6 +23,38 @@
 #include <IndustryStandard/AcpiAml.h>
 #include "EthMac.h"
 
+EFI_EVENT       mUpdateAcpiDsdtTableEvent;
+
+VOID
+EFIAPI
+UpdateAcpiDsdt (
+  IN EFI_EVENT         Event,
+  IN VOID              *Context
+  )
+{
+  EFI_ACPI_TABLE_PROTOCOL *AcpiTableProtocol;
+  EFI_STATUS              Status;
+
+  Status = gBS->LocateProtocol (
+                  &gEfiAcpiTableProtocolGuid,
+                  NULL,
+                  (VOID**)&AcpiTableProtocol
+                  );
+
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_ERROR, " Unable to locate ACPI table protocol\n"));
+    return;
+  }
+
+  Status = EthMacInit ();
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_ERROR, " UpdateAcpiDsdtTable Failed, Status = %r\n", Status));
+  }
+
+  gBS->CloseEvent (Event);
+  return;
+}
+
 EFI_STATUS
 EFIAPI
 AcpiPlatformEntryPoint (
@@ -30,5 +62,25 @@ AcpiPlatformEntryPoint (
   IN EFI_SYSTEM_TABLE   *SystemTable
   )
 {
-  return EthMacInit();
+  EFI_STATUS Status;
+
+  //
+  // Register notify function
+  //
+  Status = gBS->CreateEventEx (
+                  EVT_NOTIFY_SIGNAL,
+                  TPL_CALLBACK,
+                  UpdateAcpiDsdt,
+                  NULL,
+                  &gEfiEventReadyToBootGuid,
+                  &mUpdateAcpiDsdtTableEvent
+                  );
+
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_ERROR, "Create ReadyToBoot event for UpdateAcpiDsdt failed.\n"));
+  } else {
+    DEBUG ((DEBUG_INFO, "Create ReadyToBoot event for UpdateAcpiDsdt success.\n"));
+  }
+
+  return Status;
 }
diff --git a/Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatformDxe.inf b/Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatformDxe.inf
index 53da731..866ff75 100644
--- a/Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatformDxe.inf
+++ b/Silicon/Hisilicon/Drivers/AcpiPlatformDxe/AcpiPlatformDxe.inf
@@ -1,7 +1,7 @@
 ## @file
 #
 #  Copyright (c) 2014, Applied Micro Curcuit Corp. All rights reserved.<BR>
-#  Copyright (c) 2015, Hisilicon Limited. All rights reserved.<BR>
+#  Copyright (c) 2015 - 2020, Hisilicon Limited. All rights reserved.<BR>
 #  Copyright (c) 2015, Linaro Limited. All rights reserved.<BR>
 #  SPDX-License-Identifier: BSD-2-Clause-Patent
 #
@@ -62,5 +62,5 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdAcpiDefaultCreatorRevision
 
 [Depex]
-  gEfiAcpiTableProtocolGuid AND gEfiAcpiSdtProtocolGuid AND gHisiBoardNicProtocolGuid AND gHisiInstalledAcpiProtocolGuid
+  TRUE
 
-- 
2.8.1