From b846a65eeb926a483cff3e35242097eb6d21ceab Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Sun, 26 Jul 2015 08:02:50 +0000
Subject: ArmVirtPkg: take PcdResizeXterm from the QEMU command line (RH only)

Notes about the RHEL-8.3/20200603-ca407c7246bf [edk2-stable202005] ->
RHEL-8.5/20210520-e1999b264f1f [edk2-stable202105] rebase:

- no change

Notes about the RHEL-8.2/20190904-37eef91017ad [edk2-stable201908] ->
RHEL-8.3/20200603-ca407c7246bf [edk2-stable202005] rebase:

- Resolve leading context divergence in "ArmVirtPkg/ArmVirtQemu.dsc",
  arising from upstream commits:

  - 82662a3b5f56 ("ArmVirtPkg/PlatformPeiLib: discover the TPM base
                  address from the DT", 2020-03-04)

  - ddd34a818315 ("ArmVirtPkg/ArmVirtQemu: enable TPM2 support in the PEI
                  phase", 2020-03-04)

  - cdc3fa54184a ("ArmVirtPkg: control PXEv4 / PXEv6 boot support from the
                  QEMU command line", 2020-04-28)

- Rework the downstream patch quite a bit, paralleling the upstream work
  done for <https://bugzilla.tianocore.org/show_bug.cgi?id=2681> in commit
  range 64ab457d1f21..cdc3fa54184a:

  - Refresh copyright year in TerminalPcdProducerLib.{inf,c}. Also replace
    open-coded BSDL with "SPDX-License-Identifier: BSD-2-Clause-Patent".

  - Simplify LIBRARY_CLASS: this lib instance is meant to be consumed only
    via NULL class resolution (basically: as a plugin), so use NULL for
    LIBRARY_CLASS, not "TerminalPcdProducerLib|DXE_DRIVER".

  - Sort the [Packages] section alphabetically in the INF file.

  - Replace the open-coded GetNamedFwCfgBoolean() function with a call to
    QemuFwCfgParseBool(), from QemuFwCfgSimpleParserLib.

  - Add the SOMETIMES_PRODUCES usage comment in the [Pcd] section of the
    INF file.

Notes about the RHEL-8.1/20190308-89910a39dcfd [edk2-stable201903] ->
RHEL-8.2/20190904-37eef91017ad [edk2-stable201908] rebase:

- no change

Notes about the RHEL-8.0/20180508-ee3198e672e2 ->
RHEL-8.1/20190308-89910a39dcfd rebase:

- no change

Notes about the RHEL-7.6/ovmf-20180508-2.gitee3198e672e2.el7 ->
RHEL-8.0/20180508-ee3198e672e2 rebase:

- reorder the rebase changelog in the commit message so that it reads like
  a blog: place more recent entries near the top
- no changes to the patch body

Notes about the 20171011-92d07e48907f -> 20180508-ee3198e672e2 rebase:

- no change

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).

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.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
(cherry picked from commit d4564d39dfdbf74e762af43314005a2c026cb262)
(cherry picked from commit c9081ebe3bcd28e5cce4bf58bd8d4fca12f9af7c)
(cherry picked from commit 8e92730c8e1cdb642b3b3e680e643ff774a90c65)
(cherry picked from commit 9448b6b46267d8d807fac0c648e693171bb34806)
(cherry picked from commit 232fcf06f6b3048b7c2ebd6931f23186b3852f04)
(cherry picked from commit 8338545260fbb423f796d5196faaaf8ff6e1ed99)
(cherry picked from commit a5f7a57bf390f1f340ff1d1f1884a73716817ef1)
---
 ArmVirtPkg/ArmVirtQemu.dsc                    |  7 +++-
 .../TerminalPcdProducerLib.c                  | 34 +++++++++++++++++++
 .../TerminalPcdProducerLib.inf                | 33 ++++++++++++++++++
 OvmfPkg/PlatformPei/PlatformPei.inf           |  1 -
 4 files changed, 73 insertions(+), 2 deletions(-)
 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 891e065311..e0476ede4f 100644
--- a/ArmVirtPkg/ArmVirtQemu.dsc
+++ b/ArmVirtPkg/ArmVirtQemu.dsc
@@ -282,6 +282,8 @@
   gEfiSecurityPkgTokenSpaceGuid.PcdTpm2HashMask|0
 !endif
 
+  gEfiMdeModulePkgTokenSpaceGuid.PcdResizeXterm|FALSE
+
 [PcdsDynamicHii]
   gArmVirtTokenSpaceGuid.PcdForceNoAcpi|L"ForceNoAcpi"|gArmVirtVariableGuid|0x0|FALSE|NV,BS
 
@@ -384,7 +386,10 @@
   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..bfd3a6a535
--- /dev/null
+++ b/ArmVirtPkg/Library/TerminalPcdProducerLib/TerminalPcdProducerLib.c
@@ -0,0 +1,34 @@
+/** @file
+*  Plugin library for setting up dynamic PCDs for TerminalDxe, from fw_cfg
+*
+*  Copyright (C) 2015-2020, Red Hat, Inc.
+*  Copyright (c) 2014, Linaro Ltd. All rights reserved.<BR>
+*
+*  SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <Library/DebugLib.h>
+#include <Library/PcdLib.h>
+#include <Library/QemuFwCfgSimpleParserLib.h>
+
+#define UPDATE_BOOLEAN_PCD_FROM_FW_CFG(TokenName)                             \
+          do {                                                                \
+            BOOLEAN       Setting;                                            \
+            RETURN_STATUS PcdStatus;                                          \
+                                                                              \
+            if (!RETURN_ERROR (QemuFwCfgParseBool (                           \
+                    "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..a51dbd1670
--- /dev/null
+++ b/ArmVirtPkg/Library/TerminalPcdProducerLib/TerminalPcdProducerLib.inf
@@ -0,0 +1,33 @@
+## @file
+#  Plugin library for setting up dynamic PCDs for TerminalDxe, from fw_cfg
+#
+#  Copyright (C) 2015-2020, Red Hat, Inc.
+#  Copyright (c) 2014, Linaro Ltd. All rights reserved.<BR>
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+##
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = TerminalPcdProducerLib
+  FILE_GUID                      = 4a0c5ed7-8c42-4c01-8f4c-7bf258316a96
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = NULL
+  CONSTRUCTOR                    = TerminalPcdProducerLibConstructor
+
+[Sources]
+  TerminalPcdProducerLib.c
+
+[Packages]
+  MdeModulePkg/MdeModulePkg.dec
+  MdePkg/MdePkg.dec
+  OvmfPkg/OvmfPkg.dec
+
+[LibraryClasses]
+  DebugLib
+  PcdLib
+  QemuFwCfgSimpleParserLib
+
+[Pcd]
+  gEfiMdeModulePkgTokenSpaceGuid.PcdResizeXterm ## SOMETIMES_PRODUCES
diff --git a/OvmfPkg/PlatformPei/PlatformPei.inf b/OvmfPkg/PlatformPei/PlatformPei.inf
index 7d26b43680..69eb3edad3 100644
--- a/OvmfPkg/PlatformPei/PlatformPei.inf
+++ b/OvmfPkg/PlatformPei/PlatformPei.inf
@@ -93,7 +93,6 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize
   gEfiMdeModulePkgTokenSpaceGuid.PcdEmuVariableNvStoreReserved
-  gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration
   gEfiMdeModulePkgTokenSpaceGuid.PcdResizeXterm
   gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSwitchToLongMode
   gEfiMdeModulePkgTokenSpaceGuid.PcdUse1GPageTable
-- 
2.27.0