REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4076
This is copied from
edk2-platforms/Platform/RISC-V/PlatformPkg/Universal/FdtPeim
but added as part of library instead of a separate module.
Cc: Ard Biesheuvel <ardb+tianoc...@kernel.org>
Cc: Jiewen Yao <jiewen....@intel.com>
Cc: Jordan Justen <jordan.l.jus...@intel.com>
Cc: Gerd Hoffmann <kra...@redhat.com>
Cc: Daniel Schaefer <g...@danielschaefer.me>
Signed-off-by: Sunil V L <suni...@ventanamicro.com>
---
OvmfPkg/Library/PlatformInitLib/PlatformInitLib.inf | 9 ++-
OvmfPkg/Include/Library/PlatformInitLib.h | 6 ++
OvmfPkg/Library/PlatformInitLib/RiscV64/PlatformPeiLib.c | 72
++++++++++++++++++++
3 files changed, 86 insertions(+), 1 deletion(-)
diff --git a/OvmfPkg/Library/PlatformInitLib/PlatformInitLib.inf
b/OvmfPkg/Library/PlatformInitLib/PlatformInitLib.inf
index 5d31cad1b670..b3a69bf9582c 100644
--- a/OvmfPkg/Library/PlatformInitLib/PlatformInitLib.inf
+++ b/OvmfPkg/Library/PlatformInitLib/PlatformInitLib.inf
@@ -19,7 +19,7 @@ [Defines]
#
# The following information is for reference only and not required by the
build tools.
#
-# VALID_ARCHITECTURES = IA32 X64 EBC
+# VALID_ARCHITECTURES = IA32 X64 EBC RISCV64
#
[Sources.IA32, Sources.X64]
@@ -33,6 +33,9 @@ [Sources.IA32]
[Sources.X64]
Ia32X64/IntelTdx.c
+[Sources.RISCV64]
+ RiscV64/PlatformPeiLib.c
+
[Packages]
EmbeddedPkg/EmbeddedPkg.dec
MdeModulePkg/MdeModulePkg.dec
@@ -58,6 +61,10 @@ [LibraryClasses.IA32, LibraryClasses.X64]
[LibraryClasses.X64]
TdxLib
+[LibraryClasses.RISCV64]
+ RiscVSbiLib
+ FdtLib
+
[Pcd]
gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress
diff --git a/OvmfPkg/Include/Library/PlatformInitLib.h
b/OvmfPkg/Include/Library/PlatformInitLib.h
index c5234bf26d45..1b8d1fad3b49 100644
--- a/OvmfPkg/Include/Library/PlatformInitLib.h
+++ b/OvmfPkg/Include/Library/PlatformInitLib.h
@@ -285,4 +285,10 @@ PlatformInitEmuVariableNvStore (
IN VOID *EmuVariableNvStore
);
+EFI_STATUS
+EFIAPI
+PlatformPeim (
+ VOID
+ );
+
#endif // PLATFORM_INIT_LIB_H_
diff --git a/OvmfPkg/Library/PlatformInitLib/RiscV64/PlatformPeiLib.c
b/OvmfPkg/Library/PlatformInitLib/RiscV64/PlatformPeiLib.c
new file mode 100644
index 000000000000..266d5ddff58e
--- /dev/null
+++ b/OvmfPkg/Library/PlatformInitLib/RiscV64/PlatformPeiLib.c
@@ -0,0 +1,72 @@
+/** @file
+The library call to pass the device tree to DXE via HOB.
+
+Copyright (c) 2021, Hewlett Packard Enterprise Development LP. All rights
reserved.<BR>
+
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+//
+//// The package level header files this module uses
+////
+#include <PiPei.h>
+
+#include <Library/DebugLib.h>
+#include <Library/HobLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/BaseRiscVSbiLib.h>
+
+#include <libfdt.h>
+
+#include <Guid/FdtHob.h>
+
+/**
+ @retval EFI_SUCCESS The address of FDT is passed in HOB.
+ EFI_UNSUPPORTED Can't locate FDT.
+**/
+EFI_STATUS
+EFIAPI
+PlatformPeim (
+ VOID
+ )
+{
+ EFI_RISCV_FIRMWARE_CONTEXT *FirmwareContext;
+ VOID *FdtPointer;
+ VOID *Base;
+ VOID *NewBase;
+ UINTN FdtSize;
+ UINTN FdtPages;
+ UINT64 *FdtHobData;
+
+ FirmwareContext = NULL;
+ GetFirmwareContextPointer (&FirmwareContext);
+
+ if (FirmwareContext == NULL) {
+ DEBUG ((DEBUG_ERROR, "%a: Firmware Context is NULL\n", __FUNCTION__));
+ return EFI_UNSUPPORTED;
+ }
+
+ FdtPointer = (VOID *)FirmwareContext->FlattenedDeviceTree;
+ if (FdtPointer == NULL) {
+ DEBUG ((DEBUG_ERROR, "%a: Invalid FDT pointer\n", __FUNCTION__));
+ return EFI_UNSUPPORTED;
+ }
+
+ DEBUG ((DEBUG_INFO, "%a: Build FDT HOB - FDT at address: 0x%x \n",
__FUNCTION__, FdtPointer));
+ Base = FdtPointer;
+ ASSERT (Base != NULL);
+ ASSERT (fdt_check_header (Base) == 0);
+
+ FdtSize = fdt_totalsize (Base);
+ FdtPages = EFI_SIZE_TO_PAGES (FdtSize);
+ NewBase = AllocatePages (FdtPages);
+ ASSERT (NewBase != NULL);
+ fdt_open_into (Base, NewBase, EFI_PAGES_TO_SIZE (FdtPages));
+
+ FdtHobData = BuildGuidHob (&gFdtHobGuid, sizeof *FdtHobData);
+ ASSERT (FdtHobData != NULL);
+ *FdtHobData = (UINTN)NewBase;
+
+ return EFI_SUCCESS;
+}
--
2.38.0
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#95220): https://edk2.groups.io/g/devel/message/95220
Mute This Topic: https://groups.io/mt/94330825/21656
Group Owner: devel+ow...@edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com]
-=-=-=-=-=-=-=-=-=-=-=-
