From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) (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 E60C01A1EC0 for ; Fri, 30 Sep 2016 05:23:17 -0700 (PDT) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga105.jf.intel.com with ESMTP; 30 Sep 2016 05:23:17 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,272,1473145200"; d="scan'208";a="1064437830" Received: from gchen32-mobl.ccr.corp.intel.com (HELO jyao1-MOBL.ccr.corp.intel.com) ([10.254.214.75]) by fmsmga002.fm.intel.com with ESMTP; 30 Sep 2016 05:23:16 -0700 From: Jiewen Yao To: edk2-devel@lists.01.org Cc: Jeff Fan , Feng Tian , Star Zeng , Michael D Kinney , Liming Gao , Chao Zhang Date: Fri, 30 Sep 2016 20:21:44 +0800 Message-Id: <1475238128-22448-27-git-send-email-jiewen.yao@intel.com> X-Mailer: git-send-email 2.7.4.windows.1 In-Reply-To: <1475238128-22448-1-git-send-email-jiewen.yao@intel.com> References: <1475238128-22448-1-git-send-email-jiewen.yao@intel.com> Subject: [PATCH V2 26/50] UefiCpuPkg/Include: Add MicrocodeFlashAccessLib header. X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Sep 2016 12:23:18 -0000 This library is used to abstract microcode flash region access. This library is consumed by a microcode capsule update module. Cc: Jeff Fan Cc: Feng Tian Cc: Star Zeng Cc: Michael D Kinney Cc: Liming Gao Cc: Chao Zhang Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jiewen Yao Reviewed-by: Jeff Fan --- UefiCpuPkg/Include/Library/MicrocodeFlashAccessLib.h | 39 ++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/UefiCpuPkg/Include/Library/MicrocodeFlashAccessLib.h b/UefiCpuPkg/Include/Library/MicrocodeFlashAccessLib.h new file mode 100644 index 0000000..fe2f630 --- /dev/null +++ b/UefiCpuPkg/Include/Library/MicrocodeFlashAccessLib.h @@ -0,0 +1,39 @@ +/** @file + Microcode flash device access library. + + Copyright (c) 2016, Intel Corporation. All rights reserved.
+ 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. + +**/ + + +#ifndef __MICROCODE_FLASH_ACCESS_LIB_H__ +#define __MICROCODE_FLASH_ACCESS_LIB_H__ + +/** + Perform microcode write opreation. + + @param FlashAddress The address of flash device to be accessed. + @param Buffer The pointer to the data buffer. + @param Length The length of data buffer in bytes. + + @retval EFI_SUCCESS The operation returns successfully. + @retval EFI_WRITE_PROTECTED The flash device is read only. + @retval EFI_UNSUPPORTED The flash device access is unsupported. + @retval EFI_INVALID_PARAMETER The input parameter is not valid. +**/ +EFI_STATUS +EFIAPI +MicrocodeFlashWrite ( + IN EFI_PHYSICAL_ADDRESS FlashAddress, + IN VOID *Buffer, + IN UINTN Length + ); + +#endif -- 2.7.4.windows.1