SecurityPkg/Tcg/Opal/OpalPassword/OpalHiiCallbacks.c

   1 /** @file
   2   Callbacks required by the HII of the Opal UEFI Driver to help display
   3   Opal device information.
   4
   5 Copyright (c) 2016 - 2019, Intel Corporation. All rights reserved.<BR>
   6 SPDX-License-Identifier: BSD-2-Clause-Patent
   7
   8 **/
   9
  10 #include "OpalHii.h"
  11
  12 /**
  13   Get the driver image handle.
  14
  15   @retval  the driver image handle.
  16
  17 **/
  18 EFI_HANDLE
  19 HiiGetDriverImageHandleCB(
  20   VOID
  21   )
  22 {
  23   return gImageHandle;
  24 }
  25
  26 /**
  27   Returns the opaque pointer to a physical disk context.
  28
  29   @param  DiskIndex       Input the disk index.
  30
  31   @retval The device pointer.
  32
  33 **/
  34 VOID *
  35 HiiGetDiskContextCB(
  36   UINT8 DiskIndex
  37   )
  38 {
  39   OPAL_DRIVER_DEVICE*                Dev;
  40   UINT8                              CurrentDisk;
  41
  42   Dev = OpalDriverGetDeviceList();
  43   CurrentDisk = 0;
  44
  45   if (DiskIndex >= GetDeviceCount()) {
  46     return NULL;
  47   }
  48
  49   while (Dev != NULL) {
  50     if (CurrentDisk == DiskIndex) {
  51       return Dev;
  52     } else {
  53       Dev = Dev->Next;
  54       CurrentDisk++;
  55     }
  56   }
  57
  58   return NULL;
  59 }
  60
  61 /**
  62   Returns the opaque pointer to a physical disk context.
  63
  64   @param  DiskIndex       Input the disk index.
  65
  66   @retval The device pointer.
  67
  68 **/
  69 OPAL_DISK*
  70 HiiGetOpalDiskCB(
  71   UINT8 DiskIndex
  72   )
  73 {
  74   VOID                           *Ctx;
  75   OPAL_DRIVER_DEVICE             *Tmp;
  76
  77   Ctx = HiiGetDiskContextCB (DiskIndex);
  78
  79   if (Ctx == NULL) {
  80     return NULL;
  81   }
  82
  83   Tmp = (OPAL_DRIVER_DEVICE*) Ctx;
  84
  85   return &Tmp->OpalDisk;
  86 }
  87
  88 /**
  89   Returns the disk name.
  90
  91   @param  DiskIndex       Input the disk index.
  92
  93   @retval Returns the disk name.
  94
  95 **/
  96 CHAR8*
  97 HiiDiskGetNameCB(
  98   UINT8 DiskIndex
  99   )
 100 {
 101   OPAL_DRIVER_DEVICE*                Ctx;
 102
 103   Ctx = (OPAL_DRIVER_DEVICE*) HiiGetDiskContextCB (DiskIndex);
 104
 105   if (Ctx != NULL) {
 106     if (Ctx->NameZ == NULL) {
 107       OpalDriverGetDriverDeviceName (Ctx);
 108     }
 109     return Ctx->NameZ;
 110   }
 111   return NULL;
 112 }