SourceLevelDebugPkg/Library/DebugCommunicationLibUsb3/DebugCommunicationLibUsb3Pei.c

   1 /** @file
   2   Debug Port Library implementation based on usb3 debug port.
   3
   4   Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php.
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include <PiPei.h>
  16 #include <Library/PeiServicesLib.h>
  17 #include "DebugCommunicationLibUsb3Internal.h"
  18
  19 /**
  20   Allocate aligned memory for XHC's usage.
  21
  22   @param  BufferSize      The size, in bytes, of the Buffer.
  23
  24   @return A pointer to the allocated buffer or NULL if allocation fails.
  25
  26 **/
  27 VOID*
  28 AllocateAlignBuffer (
  29   IN UINTN                    BufferSize
  30   )
  31 {
  32   VOID                     *Buf;
  33   EFI_PHYSICAL_ADDRESS     Address;
  34   EFI_STATUS               Status;
  35
  36   Buf = NULL;
  37   Status = PeiServicesAllocatePages (EfiACPIMemoryNVS, EFI_SIZE_TO_PAGES (BufferSize), &Address);
  38   if (EFI_ERROR (Status)) {
  39     Buf = NULL;
  40   } else {
  41     Buf = (VOID *)(UINTN) Address;
  42   }
  43   return Buf;
  44 }
  45