edk2/0010-ArmVirtPkg-take-PcdResizeXterm-from-the-QEMU-command.patch

From 4de2ee915d9f3eea6d32cd010ab856ac176f3983 Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Sun, 26 Jul 2015 08:02:50 +0000
Subject: [PATCH] ArmVirtPkg: take PcdResizeXterm from the QEMU command line
 (RH only)

Notes about the 20160608b-988715a -> 20170228-c325e41585e3 rebase:

- Adapt commit 6b97969096a3 to the fact that upstream has deprecated such
  setter functions for dynamic PCDs that don't return a status code (such
  as PcdSetBool()). Employ PcdSetBoolS(), and assert that it succeeds --
  there's really no circumstance in this case when it could fail.

Notes about the 20170228-c325e41585e3 -> 20171011-92d07e48907f rebase:

- Refresh downstream-only commit d4564d39dfdb against context changes in
  "ArmVirtPkg/ArmVirtQemu.dsc" from upstream commit 7e5f1b673870
  ("ArmVirtPkg/PlatformHasAcpiDtDxe: allow guest level ACPI disable
  override", 2017-03-29).

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
(cherry picked from commit d4564d39dfdbf74e762af43314005a2c026cb262)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 ArmVirtPkg/ArmVirtQemu.dsc                    |  6 +-
 .../TerminalPcdProducerLib.c                  | 87 +++++++++++++++++++
 .../TerminalPcdProducerLib.inf                | 41 +++++++++
 3 files changed, 133 insertions(+), 1 deletion(-)
 create mode 100644 ArmVirtPkg/Library/TerminalPcdProducerLib/TerminalPcdProducerLib.c
 create mode 100644 ArmVirtPkg/Library/TerminalPcdProducerLib/TerminalPcdProducerLib.inf

diff --git a/ArmVirtPkg/ArmVirtQemu.dsc b/ArmVirtPkg/ArmVirtQemu.dsc
index 2405636af6..24c6ea2e64 100644
--- a/ArmVirtPkg/ArmVirtQemu.dsc
+++ b/ArmVirtPkg/ArmVirtQemu.dsc
@@ -249,6 +249,7 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdVideoVerticalResolution|600
   gEfiMdeModulePkgTokenSpaceGuid.PcdSetupVideoHorizontalResolution|640
   gEfiMdeModulePkgTokenSpaceGuid.PcdSetupVideoVerticalResolution|480
+  gEfiMdeModulePkgTokenSpaceGuid.PcdResizeXterm|FALSE
 
   #
   # SMBIOS entry point version
@@ -374,7 +375,10 @@
   MdeModulePkg/Universal/Console/ConPlatformDxe/ConPlatformDxe.inf
   MdeModulePkg/Universal/Console/ConSplitterDxe/ConSplitterDxe.inf
   MdeModulePkg/Universal/Console/GraphicsConsoleDxe/GraphicsConsoleDxe.inf
-  MdeModulePkg/Universal/Console/TerminalDxe/TerminalDxe.inf
+  MdeModulePkg/Universal/Console/TerminalDxe/TerminalDxe.inf {
+    <LibraryClasses>
+      NULL|ArmVirtPkg/Library/TerminalPcdProducerLib/TerminalPcdProducerLib.inf
+  }
   MdeModulePkg/Universal/SerialDxe/SerialDxe.inf
 
   MdeModulePkg/Universal/HiiDatabaseDxe/HiiDatabaseDxe.inf
diff --git a/ArmVirtPkg/Library/TerminalPcdProducerLib/TerminalPcdProducerLib.c b/ArmVirtPkg/Library/TerminalPcdProducerLib/TerminalPcdProducerLib.c
new file mode 100644
index 0000000000..814ad48199
--- /dev/null
+++ b/ArmVirtPkg/Library/TerminalPcdProducerLib/TerminalPcdProducerLib.c
@@ -0,0 +1,87 @@
+/** @file
+*  Plugin library for setting up dynamic PCDs for TerminalDxe, from fw_cfg
+*
+*  Copyright (C) 2015-2016, Red Hat, Inc.
+*  Copyright (c) 2014, Linaro Ltd. All rights reserved.<BR>
+*
+*  This program and the accompanying materials are licensed and made available
+*  under the terms and conditions of the BSD License which accompanies this
+*  distribution.  The full text of the license may be found at
+*  http://opensource.org/licenses/bsd-license.php
+*
+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
+*  IMPLIED.
+*
+**/
+
+#include <Library/DebugLib.h>
+#include <Library/PcdLib.h>
+#include <Library/QemuFwCfgLib.h>
+
+STATIC
+RETURN_STATUS
+GetNamedFwCfgBoolean (
+  IN  CONST CHAR8 *FwCfgFileName,
+  OUT BOOLEAN     *Setting
+  )
+{
+  RETURN_STATUS        Status;
+  FIRMWARE_CONFIG_ITEM FwCfgItem;
+  UINTN                FwCfgSize;
+  UINT8                Value[3];
+
+  Status = QemuFwCfgFindFile (FwCfgFileName, &FwCfgItem, &FwCfgSize);
+  if (RETURN_ERROR (Status)) {
+    return Status;
+  }
+  if (FwCfgSize > sizeof Value) {
+    return RETURN_BAD_BUFFER_SIZE;
+  }
+  QemuFwCfgSelectItem (FwCfgItem);
+  QemuFwCfgReadBytes (FwCfgSize, Value);
+
+  if ((FwCfgSize == 1) ||
+      (FwCfgSize == 2 && Value[1] == '\n') ||
+      (FwCfgSize == 3 && Value[1] == '\r' && Value[2] == '\n')) {
+    switch (Value[0]) {
+      case '0':
+      case 'n':
+      case 'N':
+        *Setting = FALSE;
+        return RETURN_SUCCESS;
+
+      case '1':
+      case 'y':
+      case 'Y':
+        *Setting = TRUE;
+        return RETURN_SUCCESS;
+
+      default:
+        break;
+    }
+  }
+  return RETURN_PROTOCOL_ERROR;
+}
+
+#define UPDATE_BOOLEAN_PCD_FROM_FW_CFG(TokenName)                             \
+          do {                                                                \
+            BOOLEAN       Setting;                                            \
+            RETURN_STATUS PcdStatus;                                          \
+                                                                              \
+            if (!RETURN_ERROR (GetNamedFwCfgBoolean (                         \
+                    "opt/org.tianocore.edk2.aavmf/" #TokenName, &Setting))) { \
+              PcdStatus = PcdSetBoolS (TokenName, Setting);                   \
+              ASSERT_RETURN_ERROR (PcdStatus);                                \
+            }                                                                 \
+          } while (0)
+
+RETURN_STATUS
+EFIAPI
+TerminalPcdProducerLibConstructor (
+  VOID
+  )
+{
+  UPDATE_BOOLEAN_PCD_FROM_FW_CFG (PcdResizeXterm);
+  return RETURN_SUCCESS;
+}
diff --git a/ArmVirtPkg/Library/TerminalPcdProducerLib/TerminalPcdProducerLib.inf b/ArmVirtPkg/Library/TerminalPcdProducerLib/TerminalPcdProducerLib.inf
new file mode 100644
index 0000000000..fecb37bcdf
--- /dev/null
+++ b/ArmVirtPkg/Library/TerminalPcdProducerLib/TerminalPcdProducerLib.inf
@@ -0,0 +1,41 @@
+## @file
+#  Plugin library for setting up dynamic PCDs for TerminalDxe, from fw_cfg
+#
+#  Copyright (C) 2015-2016, Red Hat, Inc.
+#  Copyright (c) 2014, Linaro Ltd. All rights reserved.<BR>
+#
+#  This program and the accompanying materials are licensed and made available
+#  under the terms and conditions of the BSD License which accompanies this
+#  distribution.  The full text of the license may be found at
+#  http://opensource.org/licenses/bsd-license.php
+#
+#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
+#  IMPLIED.
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = TerminalPcdProducerLib
+  FILE_GUID                      = 4a0c5ed7-8c42-4c01-8f4c-7bf258316a96
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = TerminalPcdProducerLib|DXE_DRIVER
+  CONSTRUCTOR                    = TerminalPcdProducerLibConstructor
+
+[Sources]
+  TerminalPcdProducerLib.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+  OvmfPkg/OvmfPkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+
+[LibraryClasses]
+  DebugLib
+  PcdLib
+  QemuFwCfgLib
+
+[Pcd]
+  gEfiMdeModulePkgTokenSpaceGuid.PcdResizeXterm