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>
2023-01-28 21:02:23 +05:30
parent a43a62f9b0
commit e1aaef001f
7 changed files with 673 additions and 0 deletions
--- a/OvmfPkg/RiscVVirt/Sec/SecMain.c
+++ b/OvmfPkg/RiscVVirt/Sec/SecMain.c
@@ -0,0 +1,104 @@
+/** @file
+  RISC-V SEC phase module for Qemu Virt.
+
+  Copyright (c) 2008 - 2015, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2022, Ventana Micro Systems Inc. All rights reserved.<BR>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "SecMain.h"
+
+STATIC
+EFI_STATUS
+EFIAPI
+SecInitializePlatform (
+  VOID
+  )
+{
+  EFI_STATUS  Status;
+
+  MemoryPeimInitialization ();
+
+  CpuPeimInitialization ();
+
+  // Set the Boot Mode
+  SetBootMode (BOOT_WITH_FULL_CONFIGURATION);
+
+  Status = PlatformPeimInitialization ();
+  ASSERT_EFI_ERROR (Status);
+
+  return EFI_SUCCESS;
+}
+
+/**
+
+  Entry point to the C language phase of SEC. After the SEC assembly
+  code has initialized some temporary memory and set up the stack,
+  the control is transferred to this function.
+
+
+  @param[in]  BootHartId         Hardware thread ID of boot hart.
+  @param[in]  DeviceTreeAddress  Pointer to Device Tree (DTB)
+**/
+VOID
+NORETURN
+EFIAPI
+SecStartup (
+  IN  UINTN  BootHartId,
+  IN  VOID   *DeviceTreeAddress
+  )
+{
+  EFI_HOB_HANDOFF_INFO_TABLE  *HobList;
+  EFI_RISCV_FIRMWARE_CONTEXT  FirmwareContext;
+  EFI_STATUS                  Status;
+  UINT64                      UefiMemoryBase;
+  UINT64                      StackBase;
+
+  //
+  // Report Status Code to indicate entering SEC core
+  //
+  DEBUG ((
+    DEBUG_INFO,
+    "%a() BootHartId: 0x%x, DeviceTreeAddress=0x%x\n",
+    __FUNCTION__,
+    BootHartId,
+    DeviceTreeAddress
+    ));
+
+  FirmwareContext.BootHartId          = BootHartId;
+  FirmwareContext.FlattenedDeviceTree = (UINT64)DeviceTreeAddress;
+  SetFirmwareContextPointer (&FirmwareContext);
+
+  StackBase      = (UINT64)FixedPcdGet32 (PcdOvmfSecPeiTempRamBase);
+  UefiMemoryBase = StackBase +  FixedPcdGet32 (PcdOvmfSecPeiTempRamSize) - SIZE_32MB;
+
+  // Declare the PI/UEFI memory region
+  HobList = HobConstructor (
+              (VOID *)UefiMemoryBase,
+              SIZE_32MB,
+              (VOID *)UefiMemoryBase,
+              (VOID *)StackBase // The top of the UEFI Memory is reserved for the stacks
+              );
+  PrePeiSetHobList (HobList);
+
+  SecInitializePlatform ();
+
+  //
+  // Process all libraries constructor function linked to SecMain.
+  //
+  ProcessLibraryConstructorList ();
+
+  // Assume the FV that contains the SEC (our code) also contains a compressed FV.
+  Status = DecompressFirstFv ();
+  ASSERT_EFI_ERROR (Status);
+
+  // Load the DXE Core and transfer control to it
+  Status = LoadDxeCoreFromFv (NULL, 0);
+  ASSERT_EFI_ERROR (Status);
+  //
+  // Should not come here.
+  //
+  UNREACHABLE ();
+}