This adds the possibility to include a DTB blob into the firmware image, and
have it installed as a configuration under the correct GUID at UEFI init time.
Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org>
---
MdeModulePkg/MdeModulePkg.dec | 2 +
MdeModulePkg/MdeModulePkg.dsc | 2 +
.../Universal/Fdt/FdtTableDxe/FdtTableDxe.c | 33 +++++++++++++++
.../Universal/Fdt/FdtTableDxe/FdtTableDxe.inf | 48 ++++++++++++++++++++++
MdePkg/Include/Guid/FdtTable.h | 26 ++++++++++++
MdePkg/MdePkg.dec | 3 ++
6 files changed, 114 insertions(+)
create mode 100644 MdeModulePkg/Universal/Fdt/FdtTableDxe/FdtTableDxe.c
create mode 100644 MdeModulePkg/Universal/Fdt/FdtTableDxe/FdtTableDxe.inf
create mode 100644 MdePkg/Include/Guid/FdtTable.h
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
index e04246a2f419..d4d2a423256c 100644
--- a/MdeModulePkg/MdeModulePkg.dec
+++ b/MdeModulePkg/MdeModulePkg.dec
@@ -692,6 +692,8 @@
## Default Creator Revision for ACPI table creation.
gEfiMdeModulePkgTokenSpaceGuid.PcdAcpiDefaultCreatorRevision|0x01000013|UINT32|0x30001038
+ gEfiMdeModulePkgTokenSpaceGuid.PcdFdtImage|{
0x66,0x0f,0xe1,0x96,0xa5,0x0f,0x43,0x8c,0xa9,0x50,0xbe,0x6a,0x58,0xb9,0x12,0x1b
}|VOID*|0x30001041
+
[PcdsPatchableInModule, PcdsDynamic, PcdsDynamicEx]
## This PCD defines the Console output column and the default value is 25
according to UEFI spec.
# This PCD could be set to 0 then console output could be at max column and
max row.
diff --git a/MdeModulePkg/MdeModulePkg.dsc b/MdeModulePkg/MdeModulePkg.dsc
index f4733253442b..616387a746c1 100644
--- a/MdeModulePkg/MdeModulePkg.dsc
+++ b/MdeModulePkg/MdeModulePkg.dsc
@@ -322,6 +322,8 @@
MdeModulePkg/Universal/Acpi/FirmwarePerformanceDataTableDxe/FirmwarePerformanceDxe.inf
MdeModulePkg/Universal/Acpi/BootGraphicsResourceTableDxe/BootGraphicsResourceTableDxe.inf
+ MdeModulePkg/Universal/Fdt/FdtTableDxe/FdtTableDxe.inf
+
[Components.IA32, Components.X64, Components.IPF]
MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxeBcDxe.inf
MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxe.inf
diff --git a/MdeModulePkg/Universal/Fdt/FdtTableDxe/FdtTableDxe.c
b/MdeModulePkg/Universal/Fdt/FdtTableDxe/FdtTableDxe.c
new file mode 100644
index 000000000000..c9b8b4c42464
--- /dev/null
+++ b/MdeModulePkg/Universal/Fdt/FdtTableDxe/FdtTableDxe.c
@@ -0,0 +1,33 @@
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/UefiLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/UefiDriverEntryPoint.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/PcdLib.h>
+#include <Library/DxeServicesLib.h>
+
+#include <Guid/FdtTable.h>
+
+EFI_STATUS
+EFIAPI
+InitializeFdtTableDxe (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ VOID *FdtImageData;
+ UINTN FdtImageSize;
+
+ Status = GetSectionFromAnyFv(PcdGetPtr(PcdFdtImage), EFI_SECTION_RAW, 0,
+ &FdtImageData, &FdtImageSize);
+ if (EFI_ERROR(Status))
+ return Status;
+
+ DEBUG((EFI_D_ERROR, "InitializeFdtTableDxe: DTB @ 0x%08x\n", FdtImageData));
+
+ return gBS->InstallConfigurationTable(&gEfiFdtTableGuid, FdtImageData);
+}
diff --git a/MdeModulePkg/Universal/Fdt/FdtTableDxe/FdtTableDxe.inf
b/MdeModulePkg/Universal/Fdt/FdtTableDxe/FdtTableDxe.inf
new file mode 100644
index 000000000000..993b778b8f66
--- /dev/null
+++ b/MdeModulePkg/Universal/Fdt/FdtTableDxe/FdtTableDxe.inf
@@ -0,0 +1,48 @@
+## @file
+# FDT Table Protocol Driver
+#
+# 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 = FdtTableDxe
+ FILE_GUID = 261F9737-CDF6-46CE-A9E2-5DD16B957413
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+
+ ENTRY_POINT = InitializeFdtTableDxe
+
+[Sources]
+ FdtTableDxe.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+
+[LibraryClasses]
+ BaseLib
+ PcdLib
+ UefiDriverEntryPoint
+ DxeServicesLib
+
+[Guids]
+ gEfiFdtTableGuid
+
+[FeaturePcd]
+
+[Pcd]
+ gEfiMdeModulePkgTokenSpaceGuid.PcdFdtImage
+
+[Protocols]
+
+[Depex]
+ TRUE
diff --git a/MdePkg/Include/Guid/FdtTable.h b/MdePkg/Include/Guid/FdtTable.h
new file mode 100644
index 000000000000..ab2e0bc43940
--- /dev/null
+++ b/MdePkg/Include/Guid/FdtTable.h
@@ -0,0 +1,26 @@
+/** @file
+ GUIDs used to locate the FDT image in the UEFI 2.x system table.
+
+ 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.
+
+**/
+
+#ifndef __FDT_TABLE_GUID_H__
+#define __FDT_TABLE_GUID_H__
+
+#define FDT_TABLE_GUID \
+ { \
+ 0xb1b621d5, 0xf19c, 0x41a5, { 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa,
0xe0 } \
+ }
+
+extern EFI_GUID gEfiFdtTableGuid;
+
+#endif
diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
index 4daf3e6a75ea..574561b9f675 100644
--- a/MdePkg/MdePkg.dec
+++ b/MdePkg/MdePkg.dec
@@ -615,6 +615,9 @@
## Include/Guid/VectorHandoffTable.h
gEfiVectorHandoffTableGuid = { 0x996ec11c, 0x5397, 0x4e73, { 0xb5,
0x8f, 0x82, 0x7e, 0x52, 0x90, 0x6d, 0xef }}
+ ## Include/Guid/FdtTable.h
+ gEfiFdtTableGuid = { 0xb1b621d5, 0xf19c, 0x41a5, {0x83,
0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0 }}
+
[Guids.IA32, Guids.X64]
## Include/Guid/Cper.h
gEfiIa32X64ErrorTypeCacheCheckGuid = { 0xA55701F5, 0xE3EF, 0x43de, { 0xAC,
0x72, 0x24, 0x9B, 0x57, 0x3F, 0xAD, 0x2C }}
--
1.8.3.2
------------------------------------------------------------------------------
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