EmbeddedPkg: Split off FDT loading functionality from FdtLib

Split off the recently added functionality to load device tree images and
install them as configuration tables, as it introduces a dependency on
UefiBootServicesTableLib, preventing FdtLib from being used during SEC and
PEI phases.

Contributed-under: TianoCore Contribution Agreement 1.0
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16080 6f19259b-4bc3-4df7-8a09-765794883524

EmbeddedPkg/EmbeddedPkg.dsc

@@ -262,6 +262,9 @@
 
   EmbeddedPkg/Universal/MmcDxe/MmcDxe.inf
 
+  # FDT Support
+  EmbeddedPkg/Library/FdtLoadLib/FdtLoadLib.inf
+
   EmbeddedPkg/Application/AndroidFastboot/AndroidFastbootApp.inf
   EmbeddedPkg/Drivers/AndroidFastbootTransportUsbDxe/FastbootTransportUsbDxe.inf
   EmbeddedPkg/Drivers/AndroidFastbootTransportTcpDxe/FastbootTransportTcpDxe.inf

EmbeddedPkg/Include/Library/FdtLoadLib.h

@@ -0,0 +1,48 @@
+/** @file
+*
+*  Copyright (c) 2011-2014, ARM Limited. All rights reserved.
+*
+*  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.
+*
+**/
+
+#ifndef _FDT_LOAD_LIB_H_
+#define _FDT_LOAD_LIB_H_
+
+/**
+  Load and Install FDT from Semihosting
+
+  @param Filename   Name of the file to load from semihosting
+
+  @return EFI_SUCCESS           Fdt Blob was successfully installed into the configuration table
+                                from semihosting
+  @return EFI_NOT_FOUND         Fail to locate the file in semihosting
+  @return EFI_OUT_OF_RESOURCES  Fail to allocate memory to contain the blob
+**/
+EFI_STATUS
+InstallFdtFromSemihosting (
+  IN  CONST CHAR16*   FileName
+  );
+
+/**
+  Load and Install FDT from Firmware Volume
+
+  @param Filename   Guid of the FDT blob to load from firmware volume
+
+  @return EFI_SUCCESS           Fdt Blob was successfully installed into the configuration table
+                                from firmware volume
+  @return EFI_NOT_FOUND         Failed to locate the file in firmware volume
+  @return EFI_OUT_OF_RESOURCES  Failed to allocate memory to contain the blob
+**/
+EFI_STATUS
+InstallFdtFromFv (
+  IN  CONST EFI_GUID *FileName
+  );
+
+#endif

EmbeddedPkg/Include/libfdt_env.h

@@ -15,7 +15,6 @@
 #ifndef _LIBFDT_ENV_H
 #define _LIBFDT_ENV_H
 
-#include <Uefi.h>
 #include <Library/BaseLib.h>
 #include <Library/BaseMemoryLib.h>
 
@@ -79,34 +78,4 @@ static inline char *strchr(const char *s, int c) {
   return AsciiStrStr (s, pattern);
 }
 
-/**
-  Load and Install FDT from Semihosting
-
-  @param Filename   Name of the file to load from semihosting
-
-  @return EFI_SUCCESS           Fdt Blob was successfully installed into the configuration table
-                                from semihosting
-  @return EFI_NOT_FOUND         Fail to locate the file in semihosting
-  @return EFI_OUT_OF_RESOURCES  Fail to allocate memory to contain the blob
-**/
-EFI_STATUS
-InstallFdtFromSemihosting (
-  IN  CONST CHAR16*   FileName
-  );
-
-/**
-  Load and Install FDT from Firmware Volume
-
-  @param Filename   Guid of the FDT blob to load from firmware volume
-
-  @return EFI_SUCCESS           Fdt Blob was successfully installed into the configuration table
-                                from firmware volume
-  @return EFI_NOT_FOUND         Failed to locate the file in firmware volume
-  @return EFI_OUT_OF_RESOURCES  Failed to allocate memory to contain the blob
-**/
-EFI_STATUS
-InstallFdtFromFv (
-  IN  CONST EFI_GUID *FileName
-  );
-
 #endif /* _LIBFDT_ENV_H */

EmbeddedPkg/Library/FdtLib/FdtLib.inf

@@ -26,7 +26,6 @@
 #
 
 [Sources]
-  FdtConfigurationTable.c
   fdt_ro.c
   fdt_rw.c
   fdt_strerror.c
@@ -37,15 +36,3 @@
 [Packages]
   MdePkg/MdePkg.dec
   EmbeddedPkg/EmbeddedPkg.dec
-
-[LibraryClasses]
-  UefiBootServicesTableLib
-
-[Protocols]
-  gEfiDevicePathProtocolGuid
-  gEfiSimpleFileSystemProtocolGuid
-  gEfiFirmwareVolume2ProtocolGuid
-
-[Guids]
-  gEfiFileInfoGuid
-  gFdtTableGuid

EmbeddedPkg/Library/FdtLoadLib/FdtConfigurationTable.c

@@ -14,6 +14,7 @@
 
 #include <PiDxe.h>
 #include <Library/DebugLib.h>
+#include <Library/FdtLoadLib.h>
 #include <Library/MemoryAllocationLib.h>
 #include <Library/UefiBootServicesTableLib.h>
 

EmbeddedPkg/Library/FdtLoadLib/FdtLoadLib.inf

@@ -0,0 +1,45 @@
+#/* @file
+#  Copyright (c) 2014, Linaro Limited. All rights reserved.
+#
+#  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                      = FdtLoadLib
+  FILE_GUID                      = F00298C1-BBC3-445F-8906-AAEAFE7729A4
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = FdtLoadLib
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+#  VALID_ARCHITECTURES           = ARM AARCH64
+#
+
+[Sources]
+  FdtConfigurationTable.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+  EmbeddedPkg/EmbeddedPkg.dec
+
+[LibraryClasses]
+  FdtLib
+
+[Protocols]
+  gEfiDevicePathProtocolGuid
+  gEfiSimpleFileSystemProtocolGuid
+  gEfiFirmwareVolume2ProtocolGuid
+
+[Guids]
+  gEfiFileInfoGuid
+  gFdtTableGuid