OvmfPkg/RiscVVirt/Library/PrePiHobListPointerLib/PrePiHobListPointer.c

   1 /** @file
   2 *
   3 *  Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
   4 *  SPDX-License-Identifier: BSD-2-Clause-Patent
   5 *
   6 **/
   7
   8 #include <PiPei.h>
   9 #include <Library/PrePiHobListPointerLib.h>
  10 #include <Library/DebugLib.h>
  11 #include <Library/HobLib.h>
  12 #include <Library/BaseRiscVSbiLib.h>
  13
  14 /**
  15   Returns the pointer to the HOB list.
  16
  17   This function returns the pointer to first HOB in the list.
  18
  19   @return The pointer to the HOB list.
  20
  21 **/
  22 VOID *
  23 EFIAPI
  24 PrePeiGetHobList (
  25   VOID
  26   )
  27 {
  28   EFI_RISCV_FIRMWARE_CONTEXT  *FirmwareContext;
  29
  30   FirmwareContext = NULL;
  31   GetFirmwareContextPointer (&FirmwareContext);
  32
  33   if (FirmwareContext == NULL) {
  34     DEBUG ((DEBUG_ERROR, "%a: Firmware Context is NULL\n", __FUNCTION__));
  35     return NULL;
  36   }
  37
  38   return (VOID *)FirmwareContext->PrePiHobList;
  39 }
  40
  41 /**
  42   Updates the pointer to the HOB list.
  43
  44   @param  HobList       Hob list pointer to store
  45
  46 **/
  47 EFI_STATUS
  48 EFIAPI
  49 PrePeiSetHobList (
  50   IN  VOID  *HobList
  51   )
  52 {
  53   EFI_RISCV_FIRMWARE_CONTEXT  *FirmwareContext;
  54
  55   FirmwareContext = NULL;
  56   GetFirmwareContextPointer (&FirmwareContext);
  57
  58   if (FirmwareContext == NULL) {
  59     DEBUG ((DEBUG_ERROR, "%a: Firmware Context is NULL\n", __FUNCTION__));
  60     return EFI_NOT_READY;
  61   }
  62
  63   FirmwareContext->PrePiHobList = HobList;
  64   return EFI_SUCCESS;
  65 }