From nobody Wed Dec 25 01:55:06 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=none (zoho.com: 198.145.21.10 is neither permitted nor denied by domain of lists.01.org) smtp.mailfrom=edk2-devel-bounces@lists.01.org Return-Path: Received: from ml01.01.org (ml01.01.org [198.145.21.10]) by mx.zohomail.com with SMTPS id 1511950504327557.5758880147425; Wed, 29 Nov 2017 02:15:04 -0800 (PST) Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 3F0D5203564D5; Wed, 29 Nov 2017 02:10:38 -0800 (PST) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id ED39B203564AF for ; Wed, 29 Nov 2017 02:10:36 -0800 (PST) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 29 Nov 2017 02:15:00 -0800 Received: from shwdeopenpsi068.ccr.corp.intel.com ([10.239.158.46]) by fmsmga001.fm.intel.com with ESMTP; 29 Nov 2017 02:15:00 -0800 X-Original-To: edk2-devel@lists.01.org Received-SPF: none (zoho.com: 198.145.21.10 is neither permitted nor denied by domain of lists.01.org) client-ip=198.145.21.10; envelope-from=edk2-devel-bounces@lists.01.org; helo=ml01.01.org; Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=134.134.136.65; helo=mga03.intel.com; envelope-from=star.zeng@intel.com; receiver=edk2-devel@lists.01.org X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.44,472,1505804400"; d="scan'208";a="8383175" From: Star Zeng To: edk2-devel@lists.01.org Date: Wed, 29 Nov 2017 18:14:54 +0800 Message-Id: <1511950497-9088-2-git-send-email-star.zeng@intel.com> X-Mailer: git-send-email 2.7.0.windows.1 In-Reply-To: <1511950497-9088-1-git-send-email-star.zeng@intel.com> References: <1511950497-9088-1-git-send-email-star.zeng@intel.com> Subject: [edk2] [PATCH V2 1/4] MdePkg PiFirmwareVolume.h: Add USED_SIZE FV_EXT_TYPE definitions X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Liming Gao , Star Zeng MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Errors-To: edk2-devel-bounces@lists.01.org Sender: "edk2-devel" X-ZohoMail: RSF_4 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" The definitions are introduced by PI 1.6 spec. The EFI_FIRMWARE_VOLUME_EXT_ENTRY_USED_SIZE_TYPE can be used to find out how many EFI_FVB2_ERASE_POLARITY bytes are at the end of the FV. When the FV gets shadowed into memory you only need to copy the used bytes into memory and fill the rest of the memory buffer with the erase value. Cc: Liming Gao Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Star Zeng --- MdePkg/Include/Pi/PiFirmwareVolume.h | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) diff --git a/MdePkg/Include/Pi/PiFirmwareVolume.h b/MdePkg/Include/Pi/PiFir= mwareVolume.h index 79fde131902e..2482a7f96add 100644 --- a/MdePkg/Include/Pi/PiFirmwareVolume.h +++ b/MdePkg/Include/Pi/PiFirmwareVolume.h @@ -1,7 +1,7 @@ /** @file The firmware volume related definitions in PI. =20 - Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.
+ Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.
This program and the accompanying materials are licensed and made available under the terms and conditions of the BS= D License which accompanies this distribution. The full text of the license may b= e found at @@ -11,7 +11,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMP= LIED. =20 @par Revision Reference: - PI Version 1.3 + PI Version 1.6 =20 **/ =20 @@ -231,4 +231,23 @@ typedef struct { /// } EFI_FIRMWARE_VOLUME_EXT_ENTRY_GUID_TYPE; =20 +#define EFI_FV_EXT_TYPE_USED_SIZE_TYPE 0x03 + +/// +/// The EFI_FIRMWARE_VOLUME_EXT_ENTRY_USED_SIZE_TYPE can be used to find +/// out how many EFI_FVB2_ERASE_POLARITY bytes are at the end of the FV. +/// +typedef struct { + /// + /// Standard extension entry, with the type EFI_FV_EXT_TYPE_USED_SIZE_TY= PE. + /// + EFI_FIRMWARE_VOLUME_EXT_ENTRY Hdr; + /// + /// The number of bytes of the FV that are in uses. The remaining + /// EFI_FIRMWARE_VOLUME_HEADER FvLength minus UsedSize bytes in + /// the FV must contain the value implied by EFI_FVB2_ERASE_POLARITY. + /// + UINT32 UsedSize; +} EFI_FIRMWARE_VOLUME_EXT_ENTRY_USED_SIZE_TYPE; + #endif --=20 2.7.0.windows.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel