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/** @file
Debug Port Library implementation based on usb3 debug port.
Copyright (c) 2014 - 2017, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <PiPei.h>
#include <Library/PeiServicesLib.h>
#include <Ppi/MemoryDiscovered.h>
#include "DebugCommunicationLibUsb3Internal.h"
/**
Allocate aligned memory for XHC's usage.
@param BufferSize The size, in bytes, of the Buffer.
@return A pointer to the allocated buffer or NULL if allocation fails.
**/
VOID*
AllocateAlignBuffer (
IN UINTN BufferSize
)
{
VOID *Buf;
EFI_PHYSICAL_ADDRESS Address;
EFI_STATUS Status;
VOID *MemoryDiscoveredPpi;
Buf = NULL;
//
// Make sure the allocated memory is physical memory.
//
Status = PeiServicesLocatePpi (
&gEfiPeiMemoryDiscoveredPpiGuid,
0,
NULL,
(VOID **) &MemoryDiscoveredPpi
);
if (!EFI_ERROR (Status)) {
Status = PeiServicesAllocatePages (EfiACPIMemoryNVS, EFI_SIZE_TO_PAGES (BufferSize), &Address);
if (!EFI_ERROR (Status)) {
Buf = (VOID *)(UINTN) Address;
}
}
return Buf;
}
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