From patchwork Thu Apr 22 21:49:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Kuppuswamy Sathyanarayanan X-Patchwork-Id: 12219215 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-21.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9C2A4C433ED for ; Thu, 22 Apr 2021 21:49:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5BAB861417 for ; Thu, 22 Apr 2021 21:49:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236877AbhDVVuJ (ORCPT ); Thu, 22 Apr 2021 17:50:09 -0400 Received: from mga05.intel.com ([192.55.52.43]:1655 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236763AbhDVVuJ (ORCPT ); Thu, 22 Apr 2021 17:50:09 -0400 IronPort-SDR: AKEY+wKDzhGHW/53nQ5MeHCv6BOHTlcvOnl2Q3qgbKQIwBfI3dyPM16n59eOtJX5ojKhDqcz12 4fv4JvBIT7VQ== X-IronPort-AV: E=McAfee;i="6200,9189,9962"; a="281306828" X-IronPort-AV: E=Sophos;i="5.82,243,1613462400"; d="scan'208";a="281306828" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Apr 2021 14:49:34 -0700 IronPort-SDR: 9v3Jnzo0sau8JhUvLa2YtbH0/lldGzL0vEapv3imVSDVBi8H6TblUsXIQ2t7l3Hpc7Vu6Y8Zmg SyP+3KoWw88g== X-IronPort-AV: E=Sophos;i="5.82,243,1613462400"; d="scan'208";a="455965847" Received: from eassadia-mobl1.amr.corp.intel.com (HELO skuppusw-mobl5.amr.corp.intel.com) ([10.254.4.68]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Apr 2021 14:49:33 -0700 From: Kuppuswamy Sathyanarayanan To: Rafael J Wysocki , Len Brown , Robert Moore , Erik Kaneda Cc: linux-acpi@vger.kernel.org, devel@acpica.org, linux-kernel@vger.kernel.org, Kuppuswamy Sathyanarayanan , "Rafael J . Wysocki" Subject: [PATCH v2 1/1] ACPICA: Add SVKL table headers Date: Thu, 22 Apr 2021 14:49:30 -0700 Message-Id: <20210422214930.716596-1-sathyanarayanan.kuppuswamy@linux.intel.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org ACPICA commit b5e6bcf69dbb9877481992d5ce86008cfb94f5b8 SVKL (Storage Volume Key Location Table) is used by BIOS/Firmware to share storage volume encryption key's with OS. It will be used by userspace to decrypt and mount encrypted drives. So add SVKL table signature and add it to known signatures array support SVKL. You can find details about the SVKL table in TDX specfication titled "Guest-Host-Communication Interface (GHCI) for Intel Trust Domain Extensions (Intel® TDX)", sec 4.4 and in ACPI specification r6.4, sec 5.2.6. https://software.intel.com/content/dam/develop/external/us/en/documents/intel-tdx-guest-hypervisor-communication-interface.pdf Cc: Robert Moore Cc: Erik Kaneda Cc: Rafael J. Wysocki Link: https://github.com/acpica/acpica/commit/b5e6bcf6 Signed-off-by: Kuppuswamy Sathyanarayanan --- include/acpi/actbl2.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h index d6478c430c99..83a9d8b68e3a 100644 --- a/include/acpi/actbl2.h +++ b/include/acpi/actbl2.h @@ -43,6 +43,7 @@ #define ACPI_SIG_SDEI "SDEI" /* Software Delegated Exception Interface Table */ #define ACPI_SIG_SDEV "SDEV" /* Secure Devices table */ #define ACPI_SIG_NHLT "NHLT" /* Non-HDAudio Link Table */ +#define ACPI_SIG_SVKL "SVKL" /* Storage Volume Key Location Table */ /* * All tables must be byte-packed to match the ACPI specification, since @@ -1713,6 +1714,35 @@ struct acpi_sdev_pcie_path { u8 function; }; +/******************************************************************************* + * + * SVKL - Storage Volume Key Location Table (ACPI 6.4) + * Version 1 + * + ******************************************************************************/ + +struct acpi_table_svkl { + struct acpi_table_header header; /* Common ACPI table header */ + u32 count; +}; + +struct acpi_svkl_header { + u16 type; + u16 format; + u32 size; + u64 address; +}; + +enum acpi_svkl_type { + ACPI_SVKL_TYPE_MAIN_STORAGE = 0, + ACPI_SVKL_TYPE_RESERVED = 1 /* 1 and greater are reserved */ +}; + +enum acpi_svkl_format { + ACPI_SVKL_FORMAT_RAW_BINARY = 0, + ACPI_SVKL_FORMAT_RESERVED = 1 /* 1 and greater are reserved */ +}; + /* Reset to default packing */ #pragma pack()