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From: Laszlo Ersek <lersek@redhat.com>
To: edk2-devel-01 <edk2-devel@lists.01.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>,
	Leif Lindholm <leif.lindholm@linaro.org>
Subject: [PATCH v2 10/12] ArmVirtPkg/FdtClientDxe: install DT as sysconfig table in protocol notify
Date: Fri, 17 Mar 2017 21:47:29 +0100	[thread overview]
Message-ID: <20170317204731.31488-11-lersek@redhat.com> (raw)
In-Reply-To: <20170317204731.31488-1-lersek@redhat.com>

Replace the dependency on PcdPureAcpiBoot with a Platform Has Device Tree
notification callback. Move the sysconfig table installation from the
entry point function to the callback.

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
---
 ArmVirtPkg/FdtClientDxe/FdtClientDxe.inf |   5 +-
 ArmVirtPkg/FdtClientDxe/FdtClientDxe.c   | 105 ++++++++++++++++++--
 2 files changed, 98 insertions(+), 12 deletions(-)

diff --git a/ArmVirtPkg/FdtClientDxe/FdtClientDxe.inf b/ArmVirtPkg/FdtClientDxe/FdtClientDxe.inf
index 3a0cd37040eb..99dcbde59497 100644
--- a/ArmVirtPkg/FdtClientDxe/FdtClientDxe.inf
+++ b/ArmVirtPkg/FdtClientDxe/FdtClientDxe.inf
@@ -25,6 +25,7 @@ [Sources]
   FdtClientDxe.c
 
 [Packages]
+  ArmPkg/ArmPkg.dec
   ArmVirtPkg/ArmVirtPkg.dec
   EmbeddedPkg/EmbeddedPkg.dec
   MdeModulePkg/MdeModulePkg.dec
@@ -39,14 +40,12 @@ [LibraryClasses]
   UefiDriverEntryPoint
 
 [Protocols]
+  gEdkiiPlatformHasDeviceTreeProtocolGuid ## CONSUMES
   gFdtClientProtocolGuid                  ## PRODUCES
 
 [Guids]
   gFdtHobGuid
   gFdtTableGuid
 
-[FeaturePcd]
-  gArmVirtTokenSpaceGuid.PcdPureAcpiBoot
-
 [Depex]
   TRUE
diff --git a/ArmVirtPkg/FdtClientDxe/FdtClientDxe.c b/ArmVirtPkg/FdtClientDxe/FdtClientDxe.c
index 547a29fce62c..9dda0d005d61 100644
--- a/ArmVirtPkg/FdtClientDxe/FdtClientDxe.c
+++ b/ArmVirtPkg/FdtClientDxe/FdtClientDxe.c
@@ -24,6 +24,7 @@
 #include <Guid/FdtHob.h>
 
 #include <Protocol/FdtClient.h>
+#include <Protocol/PlatformHasDeviceTree.h>
 
 STATIC VOID  *mDeviceTreeBase;
 
@@ -306,6 +307,40 @@ STATIC FDT_CLIENT_PROTOCOL mFdtClientProtocol = {
   GetOrInsertChosenNode,
 };
 
+STATIC
+VOID
+EFIAPI
+OnPlatformHasDeviceTree (
+  IN EFI_EVENT Event,
+  IN VOID      *Context
+  )
+{
+  EFI_STATUS Status;
+  VOID       *Interface;
+  VOID       *DeviceTreeBase;
+
+  Status = gBS->LocateProtocol (
+                  &gEdkiiPlatformHasDeviceTreeProtocolGuid,
+                  NULL,                                     // Registration
+                  &Interface
+                  );
+  if (EFI_ERROR (Status)) {
+    return;
+  }
+
+  DeviceTreeBase = Context;
+  DEBUG ((
+    DEBUG_INFO,
+    "%a: exposing DTB @ 0x%p to OS\n",
+    __FUNCTION__,
+    DeviceTreeBase
+    ));
+  Status = gBS->InstallConfigurationTable (&gFdtTableGuid, DeviceTreeBase);
+  ASSERT_EFI_ERROR (Status);
+
+  gBS->CloseEvent (Event);
+}
+
 EFI_STATUS
 EFIAPI
 InitializeFdtClientDxe (
@@ -316,6 +351,8 @@ InitializeFdtClientDxe (
   VOID              *Hob;
   VOID              *DeviceTreeBase;
   EFI_STATUS        Status;
+  EFI_EVENT         PlatformHasDeviceTreeEvent;
+  VOID              *Registration;
 
   Hob = GetFirstGuidHob (&gFdtHobGuid);
   if (Hob == NULL || GET_GUID_HOB_DATA_SIZE (Hob) != sizeof (UINT64)) {
@@ -333,15 +370,65 @@ InitializeFdtClientDxe (
 
   DEBUG ((EFI_D_INFO, "%a: DTB @ 0x%p\n", __FUNCTION__, mDeviceTreeBase));
 
-  if (!FeaturePcdGet (PcdPureAcpiBoot)) {
-    //
-    // Only install the FDT as a configuration table if we want to leave it up
-    // to the OS to decide whether it prefers ACPI over DT.
-    //
-    Status = gBS->InstallConfigurationTable (&gFdtTableGuid, DeviceTreeBase);
-    ASSERT_EFI_ERROR (Status);
+  //
+  // Register a protocol notify for the EDKII Platform Has Device Tree
+  // Protocol.
+  //
+  Status = gBS->CreateEvent (
+                  EVT_NOTIFY_SIGNAL,
+                  TPL_CALLBACK,
+                  OnPlatformHasDeviceTree,
+                  DeviceTreeBase,             // Context
+                  &PlatformHasDeviceTreeEvent
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_ERROR, "%a: CreateEvent(): %r\n", __FUNCTION__, Status));
+    return Status;
   }
 
-  return gBS->InstallProtocolInterface (&ImageHandle, &gFdtClientProtocolGuid,
-                EFI_NATIVE_INTERFACE, &mFdtClientProtocol);
+  Status = gBS->RegisterProtocolNotify (
+                  &gEdkiiPlatformHasDeviceTreeProtocolGuid,
+                  PlatformHasDeviceTreeEvent,
+                  &Registration
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((
+      DEBUG_ERROR,
+      "%a: RegisterProtocolNotify(): %r\n",
+      __FUNCTION__,
+      Status
+      ));
+    goto CloseEvent;
+  }
+
+  //
+  // Kick the event; the protocol could be available already.
+  //
+  Status = gBS->SignalEvent (PlatformHasDeviceTreeEvent);
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_ERROR, "%a: SignalEvent(): %r\n", __FUNCTION__, Status));
+    goto CloseEvent;
+  }
+
+  Status = gBS->InstallProtocolInterface (
+                  &ImageHandle,
+                  &gFdtClientProtocolGuid,
+                  EFI_NATIVE_INTERFACE,
+                  &mFdtClientProtocol
+                  );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((
+      DEBUG_ERROR,
+      "%a: InstallProtocolInterface(): %r\n",
+      __FUNCTION__,
+      Status
+      ));
+    goto CloseEvent;
+  }
+
+  return Status;
+
+CloseEvent:
+  gBS->CloseEvent (PlatformHasDeviceTreeEvent);
+  return Status;
 }
-- 
2.9.3




  parent reply	other threads:[~2017-03-17 20:47 UTC|newest]

Thread overview: 67+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-17 20:47 [PATCH v2 00/12] ArmVirtPkg: don't forward the DT to the OS if QEMU provides ACPI Laszlo Ersek
2017-03-17 20:47 ` [PATCH v2 01/12] Revert "ArmVirtPkg/FdtClientDxe: make DT table installation !ACPI dependent" Laszlo Ersek
2017-03-22 14:12   ` Ard Biesheuvel
2017-03-17 20:47 ` [PATCH v2 02/12] Revert "ArmVirtPkg/FdtClientDxe: install DT configuration table at ReadyToBoot" Laszlo Ersek
2017-03-22 14:12   ` Ard Biesheuvel
2017-03-17 20:47 ` [PATCH v2 03/12] MdeModulePkg/RamDiskDxe: fix C string literal catenation in info messages Laszlo Ersek
2017-03-20  2:16   ` Zeng, Star
2017-03-20  2:26     ` Tian, Feng
2017-03-20  2:34       ` Wu, Hao A
2017-03-20  9:46     ` Laszlo Ersek
2017-03-20  9:57       ` Zeng, Star
2017-03-20 10:10         ` Laszlo Ersek
2017-03-17 20:47 ` [PATCH v2 04/12] ArmVirtPkg/XenAcpiPlatformDxe: don't cast UINT64 to pointer directly Laszlo Ersek
2017-03-22 14:13   ` Ard Biesheuvel
2017-03-17 20:47 ` [PATCH v2 05/12] ArmPkg: introduce EDKII Platform Has ACPI Protocol, and plug-in library Laszlo Ersek
2017-03-18 15:00   ` Leif Lindholm
2017-03-20  9:01     ` Laszlo Ersek
2017-03-20 11:59       ` Leif Lindholm
2017-03-22 15:01     ` Laszlo Ersek
2017-03-23  1:41       ` Zeng, Star
2017-03-23  9:09         ` Ard Biesheuvel
2017-03-24  3:44           ` Zeng, Star
2017-03-24  7:15             ` Ard Biesheuvel
2017-03-24 17:10               ` Laszlo Ersek
2017-03-24 17:11                 ` Ard Biesheuvel
2017-03-24 17:09             ` Laszlo Ersek
2017-03-27  2:42               ` Gao, Liming
2017-03-27  7:00                 ` Ard Biesheuvel
2017-03-27 17:31                   ` Laszlo Ersek
2017-03-27 17:45                     ` Ard Biesheuvel
2017-03-28  5:25                     ` Gao, Liming
2017-03-28  7:49                       ` Laszlo Ersek
2017-03-29  9:49                         ` Gao, Liming
2017-03-29 13:03                           ` Laszlo Ersek
2017-03-20  2:23   ` Zeng, Star
2017-03-20  9:17     ` Laszlo Ersek
2017-03-20  9:57       ` Zeng, Star
2017-03-21  2:27         ` Zeng, Star
2017-03-21  7:10           ` Ard Biesheuvel
2017-03-21  8:43             ` Ard Biesheuvel
2017-03-21  9:02               ` Laszlo Ersek
2017-03-21 18:00                 ` Laszlo Ersek
2017-03-22 14:12                   ` Ard Biesheuvel
2017-03-21  8:37           ` Laszlo Ersek
2017-03-21  8:41             ` Zeng, Star
2017-03-21  9:05               ` Laszlo Ersek
2017-03-22 16:45   ` Laszlo Ersek
2017-03-17 20:47 ` [PATCH v2 06/12] ArmPkg: introduce EDKII Platform Has Device Tree Protocol Laszlo Ersek
2017-03-18 15:06   ` Leif Lindholm
2017-03-20  9:03     ` Laszlo Ersek
2017-03-17 20:47 ` [PATCH v2 07/12] ArmVirtPkg: add PlatformHasAcpiDtDxe Laszlo Ersek
2017-03-22 14:14   ` Ard Biesheuvel
2017-03-17 20:47 ` [PATCH v2 08/12] ArmVirtPkg: add XenPlatformHasAcpiDtDxe Laszlo Ersek
2017-03-22 14:15   ` Ard Biesheuvel
2017-03-17 20:47 ` [PATCH v2 09/12] ArmVirtPkg: enable AcpiTableDxe and EFI_ACPI_TABLE_PROTOCOL dynamically Laszlo Ersek
2017-03-22 14:16   ` Ard Biesheuvel
2017-03-22 14:54     ` Laszlo Ersek
2017-03-22 15:05       ` Ard Biesheuvel
2017-03-17 20:47 ` Laszlo Ersek [this message]
2017-03-22 14:18   ` [PATCH v2 10/12] ArmVirtPkg/FdtClientDxe: install DT as sysconfig table in protocol notify Ard Biesheuvel
2017-03-17 20:47 ` [PATCH v2 11/12] ArmVirtPkg/PlatformHasAcpiDtDxe: don't expose DT if QEMU provides ACPI Laszlo Ersek
2017-03-17 21:10   ` Ard Biesheuvel
2017-03-17 21:25     ` Laszlo Ersek
2017-03-17 21:27       ` Ard Biesheuvel
2017-03-22 14:18   ` Ard Biesheuvel
2017-03-17 20:47 ` [PATCH v2 12/12] ArmVirtPkg: remove PURE_ACPI_BOOT_ENABLE and PcdPureAcpiBoot Laszlo Ersek
2017-03-22 14:19   ` Ard Biesheuvel

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