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git.proxmox.com Git - mirror_edk2.git/blob - EmbeddedPkg/Library/PrePiHobListPointerLib/PrePiHobListPointer.c
9f9e9c7d44208f0bbe2a8d52b2566dc3eb27fe0b
3 * Copyright (c) 2011, ARM Limited. All rights reserved.
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
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.
16 #include <Library/PrePiHobListPointerLib.h>
17 #include <Library/DebugLib.h>
18 #include <Library/PcdLib.h>
21 // Have to use build system to set the original value in case we are running
22 // from FLASH and globals don't work. So if you do a GetHobList() and gHobList
23 // and gHobList is NULL the PCD default values are used.
25 VOID
*gHobList
= NULL
;
29 Returns the pointer to the HOB list.
31 This function returns the pointer to first HOB in the list.
33 @return The pointer to the HOB list.
42 if (gHobList
== NULL
) {
43 return (VOID
*)*(UINTN
*)PcdGet32 (PcdPrePiHobBase
);
52 Updates the pointer to the HOB list.
54 @param HobList Hob list pointer to store
66 // If this code is running from ROM this could fail
68 return (gHobList
== HobList
) ? EFI_SUCCESS
: EFI_UNSUPPORTED
;