OvmfPkg: create a separate PlatformDebugLibIoPort instance for SEC

The next patch will want to add a global variable to
PlatformDebugLibIoPort, but this is not suitable for the SEC
phase, because SEC runs from read-only flash.  The solution is
to have two library instances, one for SEC and another
for all other firmware phases.  This patch adds the "plumbing"
for the SEC library instance, separating the INF files and
moving the constructor to a separate C source file.

Contributed-under: TianoCore Contribution Agreement 1.1
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen (Intel address) <jordan.l.justen@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>

5 files changed, 116 insertions, 16 deletions

diff --git a/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c b/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c
index 74f4d9c2d6..5a1c86f2c3 100644
--- a/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c
+++ b/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c
@@ -29,21 +29,6 @@
 #define MAX_DEBUG_MESSAGE_LENGTH  0x100

 

 /**

-  This constructor function does not have to do anything.

-

-  @retval RETURN_SUCCESS   The constructor always returns RETURN_SUCCESS.

-

-**/

-RETURN_STATUS

-EFIAPI

-PlatformDebugLibIoPortConstructor (

-  VOID

-  )

-{

-  return RETURN_SUCCESS;

-}

-

-/**

   Prints a debug message to the debug output device if the specified error level is enabled.

 

   If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function

diff --git a/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLibDetect.c b/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLibDetect.c
new file mode 100644
index 0000000000..bad054f286
--- /dev/null
+++ b/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLibDetect.c
@@ -0,0 +1,31 @@
+/** @file

+  Constructor code for QEMU debug port library.

+  Non-SEC instance.

+

+  Copyright (c) 2017, Red Hat, Inc.<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 <Base.h>

+

+/**

+  This constructor function does not have anything to do.

+

+  @retval RETURN_SUCCESS   The constructor always returns RETURN_SUCCESS.

+

+**/

+RETURN_STATUS

+EFIAPI

+PlatformDebugLibIoPortConstructor (

+  VOID

+  )

+{

+  return RETURN_SUCCESS;

+}

diff --git a/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLibDetectRom.c b/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLibDetectRom.c
new file mode 100644
index 0000000000..83a118a0f7
--- /dev/null
+++ b/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLibDetectRom.c
@@ -0,0 +1,31 @@
+/** @file

+  Constructor code for QEMU debug port library.

+  SEC instance.

+

+  Copyright (c) 2017, Red Hat, Inc.<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 <Base.h>

+

+/**

+  This constructor function does not have anything to do.

+

+  @retval RETURN_SUCCESS   The constructor always returns RETURN_SUCCESS.

+

+**/

+RETURN_STATUS

+EFIAPI

+PlatformRomDebugLibIoPortConstructor (

+  VOID

+  )

+{

+  return RETURN_SUCCESS;

+}

diff --git a/OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf b/OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
index 0e74fe94cb..de3c2f542b 100644
--- a/OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
+++ b/OvmfPkg/Library/PlatformDebugLibIoPort/PlatformDebugLibIoPort.inf
@@ -21,7 +21,7 @@
   FILE_GUID                      = DF934DA3-CD31-49FE-AF50-B3C87C79325F

   MODULE_TYPE                    = BASE

   VERSION_STRING                 = 1.0

-  LIBRARY_CLASS                  = DebugLib

+  LIBRARY_CLASS                  = DebugLib|PEI_CORE PEIM DXE_CORE DXE_DRIVER DXE_RUNTIME_DRIVER SMM_CORE DXE_SMM_DRIVER UEFI_DRIVER UEFI_APPLICATION

   CONSTRUCTOR                    = PlatformDebugLibIoPortConstructor

 

 #

@@ -30,6 +30,7 @@
 

 [Sources]

   DebugLib.c

+  DebugLibDetect.c

 

 [Packages]

   MdePkg/MdePkg.dec

diff --git a/OvmfPkg/Library/PlatformDebugLibIoPort/PlatformRomDebugLibIoPort.inf b/OvmfPkg/Library/PlatformDebugLibIoPort/PlatformRomDebugLibIoPort.inf
new file mode 100644
index 0000000000..491c0318de
--- /dev/null
+++ b/OvmfPkg/Library/PlatformDebugLibIoPort/PlatformRomDebugLibIoPort.inf
@@ -0,0 +1,52 @@
+## @file

+#  Instance of Debug Library for the QEMU debug console port.

+#  It uses Print Library to produce formatted output strings.

+#

+#  Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>

+#  Copyright (c) 2017, Red Hat, Inc.<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                      = PlatformRomDebugLibIoPort

+  FILE_GUID                      = CEB0D9D3-328F-4C24-8C02-28FA1986AE1B

+  MODULE_TYPE                    = BASE

+  VERSION_STRING                 = 1.0

+  LIBRARY_CLASS                  = DebugLib|SEC

+  CONSTRUCTOR                    = PlatformRomDebugLibIoPortConstructor

+

+#

+#  VALID_ARCHITECTURES           = IA32 X64 IPF EBC

+#

+

+[Sources]

+  DebugLib.c

+  DebugLibDetectRom.c

+

+[Packages]

+  MdePkg/MdePkg.dec

+  OvmfPkg/OvmfPkg.dec

+

+[LibraryClasses]

+  BaseMemoryLib

+  IoLib

+  PcdLib

+  PrintLib

+  BaseLib

+  DebugPrintErrorLevelLib

+

+[Pcd]

+  gUefiOvmfPkgTokenSpaceGuid.PcdDebugIoPort                ## CONSUMES

+  gEfiMdePkgTokenSpaceGuid.PcdDebugClearMemoryValue        ## CONSUMES

+  gEfiMdePkgTokenSpaceGuid.PcdDebugPropertyMask            ## CONSUMES

+  gEfiMdePkgTokenSpaceGuid.PcdFixedDebugPrintErrorLevel    ## CONSUMES

+