diff options
| author | Sunil V L <sunilvl@ventanamicro.com> | 2023-01-28 21:02:23 +0530 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2023-02-16 05:53:28 +0000 |
| commit | e1aaef001fd2ddb8c7b9375056598773bde46414 (patch) | |
| tree | a5b522ecff8d6c37f811d9d35f0d5e3069df94da /OvmfPkg/RiscVVirt/Sec/Platform.c | |
| parent | a43a62f9b0242aa87eeee7e8f0339ea00078fad2 (diff) | |
| download | edk2-e1aaef001fd2ddb8c7b9375056598773bde46414.tar.gz | |
OvmfPkg/RiscVVirt: Add SEC module
Add the SEC module for RISC-V Qemu virt machine support.
It uses the PEI less design.
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Abner Chang <abner.chang@amd.com>
Reviewed-by: Andrei Warkentin <andrei.warkentin@intel.com>
Acked-by: Jiewen Yao <Jiewen.yao@intel.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'OvmfPkg/RiscVVirt/Sec/Platform.c')
| -rw-r--r-- | OvmfPkg/RiscVVirt/Sec/Platform.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/OvmfPkg/RiscVVirt/Sec/Platform.c b/OvmfPkg/RiscVVirt/Sec/Platform.c new file mode 100644 index 0000000000..e8fd126cf8 --- /dev/null +++ b/OvmfPkg/RiscVVirt/Sec/Platform.c @@ -0,0 +1,84 @@ +/** @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 <Library/PcdLib.h>
+#include <Include/Library/PrePiLib.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
+PlatformPeimInitialization (
+ 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;
+ if (fdt_check_header (Base) != 0) {
+ DEBUG ((DEBUG_ERROR, "%a: Corrupted DTB\n", __FUNCTION__));
+ return EFI_UNSUPPORTED;
+ }
+
+ FdtSize = fdt_totalsize (Base);
+ FdtPages = EFI_SIZE_TO_PAGES (FdtSize);
+ NewBase = AllocatePages (FdtPages);
+ if (NewBase == NULL) {
+ DEBUG ((DEBUG_ERROR, "%a: Could not allocate memory for DTB\n", __FUNCTION__));
+ return EFI_UNSUPPORTED;
+ }
+
+ fdt_open_into (Base, NewBase, EFI_PAGES_TO_SIZE (FdtPages));
+
+ FdtHobData = BuildGuidHob (&gFdtHobGuid, sizeof *FdtHobData);
+ if (FdtHobData == NULL) {
+ DEBUG ((DEBUG_ERROR, "%a: Could not build FDT Hob\n", __FUNCTION__));
+ return EFI_UNSUPPORTED;
+ }
+
+ *FdtHobData = (UINTN)NewBase;
+
+ BuildFvHob (PcdGet32 (PcdOvmfDxeMemFvBase), PcdGet32 (PcdOvmfDxeMemFvSize));
+
+ return EFI_SUCCESS;
+}
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