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[edk2,v6,21/23] ArmVirtualizationPkg: add PlatformPeiLib library

Message ID 1409743096-14919-22-git-send-email-ard.biesheuvel@linaro.org
State New
Headers show

Commit Message

Ard Biesheuvel Sept. 3, 2014, 11:18 a.m. UTC 
This is a fork of the ARM PlatformPeiLib for virtual machines. The main
purpose of having this specific implementation is that it allows us to
preserve the device tree blob if it was passed to us in system DRAM.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---

Removed the 'Reviewed-by: Laszlo Ersek <lersek@redhat.com>' as this module was
changed to load the device tree from PcdDeviceTreeInitialBaseAddress, but store
the new offset in PcdDeviceTreeBaseAddress (as before).



 .../Library/PlatformPeiLib/PlatformPeiLib.c        | 47 +++++++++++++++++++++
 .../Library/PlatformPeiLib/PlatformPeiLib.inf      | 48 ++++++++++++++++++++++
 2 files changed, 95 insertions(+)
 create mode 100644 ArmPlatformPkg/ArmVirtualizationPkg/Library/PlatformPeiLib/PlatformPeiLib.c
 create mode 100644 ArmPlatformPkg/ArmVirtualizationPkg/Library/PlatformPeiLib/PlatformPeiLib.inf
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Patch

diff --git a/ArmPlatformPkg/ArmVirtualizationPkg/Library/PlatformPeiLib/PlatformPeiLib.c b/ArmPlatformPkg/ArmVirtualizationPkg/Library/PlatformPeiLib/PlatformPeiLib.c
new file mode 100644
index 000000000000..41d506cf717f
--- /dev/null
+++ b/ArmPlatformPkg/ArmVirtualizationPkg/Library/PlatformPeiLib/PlatformPeiLib.c
@@ -0,0 +1,47 @@ 
+/** @file
+*
+*  Copyright (c) 2011-2012, ARM Limited. All rights reserved.
+*  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.
+*
+**/
+
+#include <PiPei.h>
+
+#include <Library/MemoryAllocationLib.h>
+#include <Library/DebugLib.h>
+#include <Library/HobLib.h>
+#include <Library/PcdLib.h>
+#include <libfdt.h>
+
+EFI_STATUS
+EFIAPI
+PlatformPeim (
+  VOID
+  )
+{
+  VOID               *Base;
+  VOID               *NewBase;
+  UINTN              FdtSize;
+
+  Base = (VOID*)(UINTN)FixedPcdGet64 (PcdDeviceTreeInitialBaseAddress);
+  ASSERT (fdt_check_header (Base) == 0);
+
+  FdtSize = fdt_totalsize (Base);
+  NewBase = AllocatePages (EFI_SIZE_TO_PAGES (FdtSize));
+  ASSERT (NewBase != NULL);
+
+  CopyMem (NewBase, Base, FdtSize);
+  PcdSet64 (PcdDeviceTreeBaseAddress, (UINT64)(UINTN)NewBase);
+
+  BuildFvHob (PcdGet32(PcdFvBaseAddress), PcdGet32(PcdFvSize));
+
+  return EFI_SUCCESS;
+}
diff --git a/ArmPlatformPkg/ArmVirtualizationPkg/Library/PlatformPeiLib/PlatformPeiLib.inf b/ArmPlatformPkg/ArmVirtualizationPkg/Library/PlatformPeiLib/PlatformPeiLib.inf
new file mode 100644
index 000000000000..e544b528d261
--- /dev/null
+++ b/ArmPlatformPkg/ArmVirtualizationPkg/Library/PlatformPeiLib/PlatformPeiLib.inf
@@ -0,0 +1,48 @@ 
+#/** @file
+#
+#  Copyright (c) 2011-2012, ARM Limited. All rights reserved.
+#  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                      = PlatformPeiLib
+  FILE_GUID                      = 59C11815-F8DA-4F49-B4FB-EC1E41ED1F06
+  MODULE_TYPE                    = SEC
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = PlatformPeiLib
+
+[Sources]
+  PlatformPeiLib.c
+
+[Packages]
+  ArmPkg/ArmPkg.dec
+  ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationPkg.dec
+  MdePkg/MdePkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+  EmbeddedPkg/EmbeddedPkg.dec
+
+[LibraryClasses]
+  DebugLib
+  HobLib
+  FdtLib
+
+[FixedPcd]
+  gArmTokenSpaceGuid.PcdFvBaseAddress
+  gArmTokenSpaceGuid.PcdFvSize
+  gArmVirtualizationTokenSpaceGuid.PcdDeviceTreeInitialBaseAddress
+
+[Pcd]
+  gArmVirtualizationTokenSpaceGuid.PcdDeviceTreeBaseAddress
+
+[Depex]
+  gEfiPeiMemoryDiscoveredPpiGuid