UnixPkg/BootModePei/BootModePei.c

   1 /**@file
   2
   3 Copyright (c) 2006 - 2008, 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   BootMode.c
  15
  16 Abstract:
  17
  18   Tiano PEIM to provide the platform support functionality within Unix
  19
  20 **/
  21
  22
  23
  24 //
  25 // The package level header files this module uses
  26 //
  27 #include <PiPei.h>
  28 //
  29 // The protocols, PPI and GUID defintions for this module
  30 //
  31 #include <Ppi/MasterBootMode.h>
  32 #include <Ppi/BootInRecoveryMode.h>
  33 //
  34 // The Library classes this module consumes
  35 //
  36 #include <Library/DebugLib.h>
  37 #include <Library/PeimEntryPoint.h>
  38
  39
  40 //
  41 // Module globals
  42 //
  43 EFI_PEI_PPI_DESCRIPTOR  mPpiListBootMode = {
  44   (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
  45   &gEfiPeiMasterBootModePpiGuid,
  46   NULL
  47 };
  48
  49 EFI_PEI_PPI_DESCRIPTOR  mPpiListRecoveryBootMode = {
  50   (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
  51   &gEfiPeiBootInRecoveryModePpiGuid,
  52   NULL
  53 };
  54
  55 EFI_STATUS
  56 EFIAPI
  57 InitializeBootMode (
  58   IN EFI_FFS_FILE_HEADER       *FfsHeader,
  59   IN EFI_PEI_SERVICES          **PeiServices
  60   )
  61 /*++
  62
  63 Routine Description:
  64
  65   Peform the boot mode determination logic
  66
  67 Arguments:
  68
  69   PeiServices - General purpose services available to every PEIM.
  70
  71 Returns:
  72
  73   Status -  EFI_SUCCESS if the boot mode could be set
  74
  75 --*/
  76 // TODO:    FfsHeader - add argument and description to function comment
  77 {
  78   EFI_STATUS  Status;
  79   UINTN       BootMode;
  80
  81   DEBUG ((EFI_D_ERROR, "Unix Boot Mode PEIM Loaded\n"));
  82
  83   //
  84   // Let's assume things are OK if not told otherwise
  85   // Should we read an environment variable in order to easily change this?
  86   //
  87   BootMode  = BOOT_WITH_FULL_CONFIGURATION;
  88
  89   Status    = (**PeiServices).SetBootMode (PeiServices, (UINT8) BootMode);
  90   ASSERT_EFI_ERROR (Status);
  91
  92   Status = (**PeiServices).InstallPpi (PeiServices, &mPpiListBootMode);
  93   ASSERT_EFI_ERROR (Status);
  94
  95   if (BootMode == BOOT_IN_RECOVERY_MODE) {
  96     Status = (**PeiServices).InstallPpi (PeiServices, &mPpiListRecoveryBootMode);
  97     ASSERT_EFI_ERROR (Status);
  98   }
  99
 100   return Status;
 101 }