MdeModulePkg/Core/DxeIplPeim/Ipf/DxeLoadFunc.c

   1 /*++
   2
   3 Copyright (c) 2006 - 2007, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13
  14   IpfDxeLoad.c
  15
  16 Abstract:
  17
  18   Ipf-specifc functionality for DxeLoad.
  19
  20 --*/
  21
  22 //
  23 // Include common header file for this module.
  24 //
  25 #include "CommonHeader.h"
  26
  27 #include "DxeIpl.h"
  28
  29 VOID
  30 HandOffToDxeCore (
  31   IN EFI_PHYSICAL_ADDRESS   DxeCoreEntryPoint,
  32   IN EFI_PEI_HOB_POINTERS   HobList,
  33   IN EFI_PEI_PPI_DESCRIPTOR *EndOfPeiSignal
  34   )
  35 {
  36   VOID                *BaseOfStack;
  37   VOID                *TopOfStack;
  38   VOID                *BspStore;
  39   EFI_STATUS          Status;
  40
  41   //
  42   // Allocate 128KB for the Stack
  43   //
  44   BaseOfStack = AllocatePages (EFI_SIZE_TO_PAGES (STACK_SIZE));
  45   ASSERT (BaseOfStack != NULL);
  46
  47   //
  48   // Allocate 16KB for the BspStore
  49   //
  50   BspStore    = AllocatePages (EFI_SIZE_TO_PAGES (BSP_STORE_SIZE));
  51   ASSERT (BspStore != NULL);
  52   //
  53   // Build BspStoreHob
  54   //
  55   BuildBspStoreHob ((EFI_PHYSICAL_ADDRESS) (UINTN) BspStore, BSP_STORE_SIZE, EfiBootServicesData);
  56
  57   //
  58   // Compute the top of the stack we were allocated. Pre-allocate a UINTN
  59   // for safety.
  60   //
  61   TopOfStack = (VOID *) ((UINTN) BaseOfStack + EFI_SIZE_TO_PAGES (STACK_SIZE) * EFI_PAGE_SIZE - CPU_STACK_ALIGNMENT);
  62   TopOfStack = ALIGN_POINTER (TopOfStack, CPU_STACK_ALIGNMENT);
  63
  64   //
  65   // End of PEI phase singal
  66   //
  67   Status = PeiServicesInstallPpi (EndOfPeiSignal);
  68   ASSERT_EFI_ERROR (Status);
  69
  70   SwitchStack (
  71     (SWITCH_STACK_ENTRY_POINT)(UINTN)DxeCoreEntryPoint,
  72     HobList.Raw,
  73     NULL,
  74     TopOfStack,
  75     BspStore
  76     );
  77 }