From patchwork Sat Oct 16 10:31:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Yu X-Patchwork-Id: 12563545 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BEDCFC433EF for ; Sat, 16 Oct 2021 10:26:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 976B8610D1 for ; Sat, 16 Oct 2021 10:26:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243991AbhJPK2s (ORCPT ); Sat, 16 Oct 2021 06:28:48 -0400 Received: from mga01.intel.com ([192.55.52.88]:60930 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236697AbhJPK2s (ORCPT ); Sat, 16 Oct 2021 06:28:48 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10138"; a="251490521" X-IronPort-AV: E=Sophos;i="5.85,378,1624345200"; d="scan'208";a="251490521" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Oct 2021 03:26:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,378,1624345200"; d="scan'208";a="488687100" Received: from chenyu-desktop.sh.intel.com ([10.239.158.176]) by fmsmga007.fm.intel.com with ESMTP; 16 Oct 2021 03:26:36 -0700 From: Chen Yu To: linux-acpi@vger.kernel.org Cc: Ard Biesheuvel , "Rafael J. Wysocki" , Len Brown , linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Ashok Raj , Andy Shevchenko , Mike Rapoport , Aubrey Li , Jonathan Corbet , linux-efi@vger.kernel.org, Chen Yu Subject: [PATCH v4 1/4] efi: Introduce EFI_FIRMWARE_MANAGEMENT_CAPSULE_HEADER and corresponding structures Date: Sat, 16 Oct 2021 18:31:56 +0800 Message-Id: <2da16256a0b4228f7c35ec839bf0ffde58c287c2.1634310710.git.yu.c.chen@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Platform Firmware Runtime Update image starts with UEFI headers, and the headers are defined in UEFI specification, but some of them have not been defined in the kernel yet. For example, the header layout of a capsule file looks like this: EFI_CAPSULE_HEADER EFI_FIRMWARE_MANAGEMENT_CAPSULE_HEADER EFI_FIRMWARE_MANAGEMENT_CAPSULE_IMAGE_HEADER EFI_FIRMWARE_IMAGE_AUTHENTICATION These structures would be used by the Platform Firmware Runtime Update driver to parse the format of capsule file to verify if the corresponding version number is valid. The EFI_CAPSULE_HEADER has been defined in the kernel, however the rest are not, thus introduce corresponding UEFI structures accordingly. Besides, EFI_FIRMWARE_MANAGEMENT_CAPSULE_HEADER and EFI_FIRMWARE_MANAGEMENT_CAPSULE_IMAGE_HEADER need not be aligned and so the corresponding data types should be packed. Signed-off-by: Chen Yu --- v4: Revise the commit log to better describe the packing. (Rafael J. Wysocki) --- include/linux/efi.h | 50 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/include/linux/efi.h b/include/linux/efi.h index 6b5d36babfcc..19ff834e1388 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -148,6 +148,56 @@ typedef struct { u32 imagesize; } efi_capsule_header_t; +#pragma pack(1) + +/* EFI_FIRMWARE_MANAGEMENT_CAPSULE_HEADER */ +typedef struct { + u32 ver; + u16 emb_drv_cnt; + u16 payload_cnt; + /* + * Variable array indicated by number of + * (emb_drv_cnt + payload_cnt) + */ + u64 offset_list[]; +} efi_manage_capsule_header_t; + +/* EFI_FIRMWARE_MANAGEMENT_CAPSULE_IMAGE_HEADER */ +typedef struct { + u32 ver; + guid_t image_type_id; + u8 image_index; + u8 reserved_bytes[3]; + u32 image_size; + u32 vendor_code_size; + /* ver = 2. */ + u64 hw_ins; + /* ver = v3. */ + u64 capsule_support; +} efi_manage_capsule_image_header_t; + +#pragma pack() + +/* WIN_CERTIFICATE */ +typedef struct { + u32 len; + u16 rev; + u16 cert_type; +} win_cert_t; + +/* WIN_CERTIFICATE_UEFI_GUID */ +typedef struct { + win_cert_t hdr; + guid_t cert_type; + u8 cert_data[]; +} win_cert_uefi_guid_t; + +/* EFI_FIRMWARE_IMAGE_AUTHENTICATIO */ +typedef struct { + u64 mon_count; + win_cert_uefi_guid_t auth_info; +} efi_image_auth_t; + /* * EFI capsule flags */