From patchwork Thu Sep 16 15:58:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Yu X-Patchwork-Id: 12499559 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 9C258C433EF for ; Thu, 16 Sep 2021 15:53:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 81AC96120E for ; Thu, 16 Sep 2021 15:53:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232509AbhIPPyV (ORCPT ); Thu, 16 Sep 2021 11:54:21 -0400 Received: from mga02.intel.com ([134.134.136.20]:52211 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231702AbhIPPyV (ORCPT ); Thu, 16 Sep 2021 11:54:21 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10109"; a="209826596" X-IronPort-AV: E=Sophos;i="5.85,298,1624345200"; d="scan'208";a="209826596" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Sep 2021 08:53:00 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,298,1624345200"; d="scan'208";a="472822890" Received: from chenyu-desktop.sh.intel.com ([10.239.158.176]) by orsmga007.jf.intel.com with ESMTP; 16 Sep 2021 08:52:55 -0700 From: Chen Yu To: linux-acpi@vger.kernel.org Cc: linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , Len Brown , Dan Williams , Andy Shevchenko , Aubrey Li , Ashok Raj , Chen Yu , Mike Rapoport , Ard Biesheuvel , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Jonathan Corbet , linux-doc@vger.kernel.org, x86@kernel.org Subject: [PATCH v3 1/5] Documentation: Introduce Platform Firmware Runtime Update documentation Date: Thu, 16 Sep 2021 23:58:02 +0800 Message-Id: <084c590593cb18fed03c6631fb9f39dcfaf66d53.1631802162.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 Add the Platform Firmware Runtime Update/Telemetry documentation. Signed-off-by: Chen Yu --- v3: No change since v2. v2: Add a spot in index.rst so it becomes part of the docs build (Jonathan Corbet). Sticking to the 80-column limit(Jonathan Corbet). Underline lengths should match the title text(Jonathan Corbet). Use literal blocks for the code samples(Jonathan Corbet). --- Documentation/x86/index.rst | 1 + Documentation/x86/pfru.rst | 100 ++++++++++++++++++++++++++++++++++++ 2 files changed, 101 insertions(+) create mode 100644 Documentation/x86/pfru.rst diff --git a/Documentation/x86/index.rst b/Documentation/x86/index.rst index 383048396336..3791fabf964c 100644 --- a/Documentation/x86/index.rst +++ b/Documentation/x86/index.rst @@ -37,3 +37,4 @@ x86-specific Documentation sgx features elf_auxvec + pfru diff --git a/Documentation/x86/pfru.rst b/Documentation/x86/pfru.rst new file mode 100644 index 000000000000..29fe0e518e6d --- /dev/null +++ b/Documentation/x86/pfru.rst @@ -0,0 +1,100 @@ +.. SPDX-License-Identifier: GPL-2.0 + +======================================================== +The Linux Platform Firmware Runtime Update and Telemetry +======================================================== + +According to the specification of `Management Mode Firmware Runtime Update +`_, certain computing systems require high Service Level Agreements +(SLAs) where system reboot fewer firmware updates are required to deploy +firmware changes to address bug fixes, security updates and to debug and root +cause issues. This technology is called Intel Seamless Update. The management +mode (MM), UEFI runtime services and ACPI services handle most of the system +runtime functions. Changing the MM code execution during runtime is called MM +Runtime Update. Since the "MM" acronyms might be misunderstood as "Memory +Management", this driver uses the name of "Platform Firmware Runtime Update" +(PFRU). + +PFRU provides the following facilities: Performs a runtime firmware driver +update and activate. Ability to inject firmware code at runtime, for dynamic +instrumentation. PFRU Telemetry is a service which allows Runtime Update +handler to produce telemetry data to upper layer OS consumer at runtime. The +OS provides interfaces to let the users query the telemetry data via read +operations. The specification specifies the interface and recommended policy +to extract the data, the format and use are left to individual OEM's and BIOS +implementations on what that data represents. + +PFRU interfaces +=============== + +The user space tool manipulates on /dev/pfru/update for code injection and +driver update. PFRU stands for Platform Firmware Runtime Update, and the +/dev/pfru directory might be reserved for future usage:: + + 1. mmap the capsule file. + fd_capsule = open("capsule.cap", O_RDONLY); + fstat(fd_capsule, &stat); + addr = mmap(0, stat.st_size, PROT_READ, fd_capsule); + + 2. Get the capability information(version control, etc) from BIOS via + read() and do sanity check in user space. + fd_update = open("/dev/pfru/update", O_RDWR); + read(fd_update, &cap, sizeof(cap)); + sanity_check(&cap); + + 3. Write the capsule file to runtime update communication buffer. + kernel might return error if capsule file size is longer than + communication buffer. + write(fd_update, addr, stat.st_size); + + 4. Stage the code injection. + ioctl(fd_update, PFRU_IOC_STATGE); + + 5. Activate the code injection. + ioctl(fd_update, PFRU_IOC_ACTIVATE); + + 6. Stage and activate the code injection. + ioctl(fd_update, PFRU_IOC_STAGE_ACTIVATE); + + PFRU_IOC_STATGE: Stage a capsule image from communication buffer + and perform authentication. + [PFRU_IOC_ACTIVATE] Activate a previous staged capsule image. + [PFRU_IOC_STAGE_ACTIVATE] Perform both stage and activation actions. + + +PFRU Telemetry interfaces +========================= + +The user space tool manipulates on /dev/pfru/telemetry for PFRU telemetry log:: + + 1. Open telemetry device + fd_log = open("/dev/pfru/telemetry", O_RDWR); + + 2. Get log level, log type, revision_id via one ioctl invoke + ioctl(fd_log, PFRU_IOC_GET_LOG_INFO, &info); + + 3. Set log level, log type, revision_id + ioctl(fd_log, PFRU_IOC_SET_LOG_INFO, &info); + + 4. ioctl(fd_log, PFRU_IOC_GET_DATA_INFO, &data_info); + Query the information of PFRU telemetry log buffer. The user is + responsible for parsing the result per the specification. + + 5. Read the telemetry data: + read(fd_log, buf, data_info.size); + +Please refer to tools/testing/selftests/pfru/pfru_test.c for detail. + +According to the specification of `Management Mode Firmware Runtime Update +`_, the telemetry buffer is a wrap around buffer. If the telemetry +buffer gets full, most recent log data will overwrite old log data. Besides, +it is required in the spec that the read of telemetry should support both full +data retrieval and delta telemetry data retrieval. Since this requirement is +more likely a policy we leave this implementation in user space. That is to +say, it is recommended for the user to double-read the telemetry parameters +such as chunk1_size, chunk2_size, rollover_cnt in data_info structure to make +sure that there is no more data appended while the user is reading the buffer. +Besides, only after the runtime update has been run at least once, the telemetry +log would have valid data, otherwise errno code of EBUSY would be returned. From patchwork Thu Sep 16 16:00:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Yu X-Patchwork-Id: 12499567 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 A4805C433EF for ; Thu, 16 Sep 2021 15:54:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 88DAE61164 for ; Thu, 16 Sep 2021 15:54:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239971AbhIPPzv (ORCPT ); Thu, 16 Sep 2021 11:55:51 -0400 Received: from mga05.intel.com ([192.55.52.43]:25691 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231702AbhIPPzv (ORCPT ); Thu, 16 Sep 2021 11:55:51 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10109"; a="308140566" X-IronPort-AV: E=Sophos;i="5.85,298,1624345200"; d="scan'208";a="308140566" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Sep 2021 08:54:28 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,298,1624345200"; d="scan'208";a="472823204" Received: from chenyu-desktop.sh.intel.com ([10.239.158.176]) by orsmga007.jf.intel.com with ESMTP; 16 Sep 2021 08:54:24 -0700 From: Chen Yu To: linux-acpi@vger.kernel.org Cc: linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , Len Brown , Dan Williams , Andy Shevchenko , Aubrey Li , Ashok Raj , Chen Yu , Mike Rapoport , Ard Biesheuvel , linux-efi@vger.kernel.org Subject: [PATCH v3 2/5] efi: Introduce EFI_FIRMWARE_MANAGEMENT_CAPSULE_HEADER and corresponding structures Date: Fri, 17 Sep 2021 00:00:10 +0800 Message-Id: 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. The reason why efi_manage_capsule_header_t and efi_manage_capsule_image_header_t are packedi might be that: According to the uefi spec, [Figure 23-6 Firmware Management and Firmware Image Management headers] EFI_FIRMWARE_MANAGEMENT_CAPSULE_HEADER is located at the lowest offset within the body of the capsule. And this structure is designed to be unaligned to save space, because in this way the adjacent drivers and binary payload elements could start on byte boundary with no padding. And the EFI_FIRMWARE_MANAGEMENT_CAPSULE_IMAGE_HEADER is at the head of each payload, so packing this structure also makes room for more data. Signed-off-by: Chen Yu --- 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 */ From patchwork Thu Sep 16 16:02:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Yu X-Patchwork-Id: 12499569 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 6F292C433F5 for ; Thu, 16 Sep 2021 15:56:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4DD4C6120E for ; Thu, 16 Sep 2021 15:56:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240277AbhIPP6H (ORCPT ); Thu, 16 Sep 2021 11:58:07 -0400 Received: from mga02.intel.com ([134.134.136.20]:52575 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240302AbhIPP6E (ORCPT ); Thu, 16 Sep 2021 11:58:04 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10109"; a="209827299" X-IronPort-AV: E=Sophos;i="5.85,298,1624345200"; d="scan'208";a="209827299" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Sep 2021 08:56:43 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,298,1624345200"; d="scan'208";a="472823712" Received: from chenyu-desktop.sh.intel.com ([10.239.158.176]) by orsmga007.jf.intel.com with ESMTP; 16 Sep 2021 08:56:39 -0700 From: Chen Yu To: linux-acpi@vger.kernel.org Cc: linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , Len Brown , Dan Williams , Andy Shevchenko , Aubrey Li , Ashok Raj , Chen Yu , Mike Rapoport , Ard Biesheuvel , Jonathan Corbet , Greg Kroah-Hartman , Hans de Goede , Ben Widawsky , linux-doc@vger.kernel.org Subject: [PATCH v3 3/5] drivers/acpi: Introduce Platform Firmware Runtime Update device driver Date: Fri, 17 Sep 2021 00:02:18 +0800 Message-Id: <90d270c031401430445cb2c4ba1b9b0c265cf9d4.1631802163.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 Introduce the pfru_update driver which can be used for Platform Firmware Runtime code injection and driver update. The user is expected to provide the update firmware in the form of capsule file, and pass it to the driver via ioctl. Then the driver would hand this capsule file to the Platform Firmware Runtime Update via the ACPI device _DSM method. At last the low level Management Mode would do the firmware update. Signed-off-by: Chen Yu --- v3: Use __u32 instead of int and __64 instead of unsigned long in include/uapi/linux/pfru.h (Greg Kroah-Hartman) Rename the structure in uapi to start with a prefix pfru so as to avoid confusing in the global namespace. (Greg Kroah-Hartman) v2: Add sanity check for duplicated instance of ACPI device. Update the driver to work with allocated pfru_device objects. (Mike Rapoport) For each switch case pair, get rid of the magic case numbers and add a default clause with the error handling. (Mike Rapoport) Move the obj->type checks outside the switch to reduce redundancy. (Mike Rapoport) Parse the code_inj_id and drv_update_id at driver initialization time to reduce the re-parsing at runtime.(Mike Rapoport) Explain in detail how the size needs to be adjusted when doing version check.(Mike Rapoport) Rename parse_update_result() to dump_update_result()(Mike Rapoport) Remove redundant return.(Mike Rapoport) Do not expose struct capsulate_buf_info to uapi, since it is not needed in userspace.(Mike Rapoport) --- .../userspace-api/ioctl/ioctl-number.rst | 1 + drivers/acpi/Kconfig | 1 + drivers/acpi/Makefile | 1 + drivers/acpi/pfru/Kconfig | 15 + drivers/acpi/pfru/Makefile | 2 + drivers/acpi/pfru/pfru_update.c | 567 ++++++++++++++++++ include/uapi/linux/pfru.h | 101 ++++ 7 files changed, 688 insertions(+) create mode 100644 drivers/acpi/pfru/Kconfig create mode 100644 drivers/acpi/pfru/Makefile create mode 100644 drivers/acpi/pfru/pfru_update.c create mode 100644 include/uapi/linux/pfru.h diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst index 2e8134059c87..6e5a82fff408 100644 --- a/Documentation/userspace-api/ioctl/ioctl-number.rst +++ b/Documentation/userspace-api/ioctl/ioctl-number.rst @@ -365,6 +365,7 @@ Code Seq# Include File Comments 0xE5 00-3F linux/fuse.h 0xEC 00-01 drivers/platform/chrome/cros_ec_dev.h ChromeOS EC driver +0xEE 00-1F uapi/linux/pfru.h Platform Firmware Runtime Update and Telemetry 0xF3 00-3F drivers/usb/misc/sisusbvga/sisusb.h sisfb (in development) 0xF6 all LTTng Linux Trace Toolkit Next Generation diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 1da360c51d66..1d8d2e2cefac 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -482,6 +482,7 @@ source "drivers/acpi/nfit/Kconfig" source "drivers/acpi/numa/Kconfig" source "drivers/acpi/apei/Kconfig" source "drivers/acpi/dptf/Kconfig" +source "drivers/acpi/pfru/Kconfig" config ACPI_WATCHDOG bool diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index 3018714e87d9..9c2c5ddff6ec 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -102,6 +102,7 @@ obj-$(CONFIG_ACPI_CPPC_LIB) += cppc_acpi.o obj-$(CONFIG_ACPI_SPCR_TABLE) += spcr.o obj-$(CONFIG_ACPI_DEBUGGER_USER) += acpi_dbg.o obj-$(CONFIG_ACPI_PPTT) += pptt.o +obj-$(CONFIG_ACPI_PFRU) += pfru/ # processor has its own "processor." module_param namespace processor-y := processor_driver.o diff --git a/drivers/acpi/pfru/Kconfig b/drivers/acpi/pfru/Kconfig new file mode 100644 index 000000000000..3f31b7d95f3b --- /dev/null +++ b/drivers/acpi/pfru/Kconfig @@ -0,0 +1,15 @@ +# SPDX-License-Identifier: GPL-2.0 +config ACPI_PFRU + tristate "ACPI Platform Firmware Runtime Update (PFRU)" + depends on 64BIT + help + In order to reduce the system reboot times and update the platform firmware + in time, Platform Firmware Runtime Update is leveraged to patch the system + without reboot. This driver supports Platform Firmware Runtime Update, + which is composed of two parts: code injection and driver update. + + For more information, see: + + + To compile this driver as a module, choose M here: + the module will be called pfru_update. diff --git a/drivers/acpi/pfru/Makefile b/drivers/acpi/pfru/Makefile new file mode 100644 index 000000000000..098cbe80cf3d --- /dev/null +++ b/drivers/acpi/pfru/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-$(CONFIG_ACPI_PFRU) += pfru_update.o diff --git a/drivers/acpi/pfru/pfru_update.c b/drivers/acpi/pfru/pfru_update.c new file mode 100644 index 000000000000..cd2039a195c9 --- /dev/null +++ b/drivers/acpi/pfru/pfru_update.c @@ -0,0 +1,567 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ACPI Platform Firmware Runtime Update Device Driver + * + * Copyright (C) 2021 Intel Corporation + * Author: Chen Yu + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +enum cap_index { + CAP_STATUS_IDX, + CAP_UPDATE_IDX, + CAP_CODE_TYPE_IDX, + CAP_FW_VER_IDX, + CAP_CODE_RT_VER_IDX, + CAP_DRV_TYPE_IDX, + CAP_DRV_RT_VER_IDX, + CAP_DRV_SVN_IDX, + CAP_PLAT_ID_IDX, + CAP_OEM_ID_IDX, + CAP_OEM_INFO_IDX, +}; + +enum buf_index { + BUF_STATUS_IDX, + BUF_EXT_STATUS_IDX, + BUF_ADDR_LOW_IDX, + BUF_ADDR_HI_IDX, + BUF_SIZE_IDX, +}; + +enum update_index { + UPDATE_STATUS_IDX, + UPDATE_EXT_STATUS_IDX, + UPDATE_AUTH_TIME_LOW_IDX, + UPDATE_AUTH_TIME_HI_IDX, + UPDATE_EXEC_TIME_LOW_IDX, + UPDATE_EXEC_TIME_HI_IDX, +}; + +struct pfru_device { + guid_t uuid, code_uuid, drv_uuid; + int rev_id; + struct device *dev; +}; + +/* + * There would be only one instance of pfru_device. + */ +static struct pfru_device *pfru_dev; + +static bool valid_cap_type(int idx, union acpi_object *obj) +{ + acpi_object_type type = obj->type; + + if (idx == CAP_STATUS_IDX || idx == CAP_UPDATE_IDX || + idx == CAP_FW_VER_IDX || idx == CAP_CODE_RT_VER_IDX || + idx == CAP_DRV_RT_VER_IDX || idx == CAP_DRV_SVN_IDX) + return type == ACPI_TYPE_INTEGER; + else if (idx == CAP_CODE_TYPE_IDX || idx == CAP_DRV_TYPE_IDX || + idx == CAP_PLAT_ID_IDX || idx == CAP_OEM_ID_IDX || + idx == CAP_OEM_INFO_IDX) + return type == ACPI_TYPE_BUFFER; + else + return false; +} + +static int query_capability(struct pfru_update_cap_info *cap) +{ + union acpi_object *out_obj; + acpi_handle handle; + int i, ret = -EINVAL; + + handle = ACPI_HANDLE(pfru_dev->dev); + out_obj = acpi_evaluate_dsm_typed(handle, &pfru_dev->uuid, + pfru_dev->rev_id, FUNC_QUERY_UPDATE_CAP, + NULL, ACPI_TYPE_PACKAGE); + if (!out_obj) + return -EINVAL; + + for (i = 0; i < out_obj->package.count; i++) { + union acpi_object *obj = &out_obj->package.elements[i]; + + if (!valid_cap_type(i, obj)) + goto free_acpi_buffer; + + switch (i) { + case CAP_STATUS_IDX: + cap->status = obj->integer.value; + break; + case CAP_UPDATE_IDX: + cap->update_cap = obj->integer.value; + break; + case CAP_CODE_TYPE_IDX: + memcpy(&cap->code_type, obj->buffer.pointer, + obj->buffer.length); + break; + case CAP_FW_VER_IDX: + cap->fw_version = obj->integer.value; + break; + case CAP_CODE_RT_VER_IDX: + cap->code_rt_version = obj->integer.value; + break; + case CAP_DRV_TYPE_IDX: + memcpy(&cap->drv_type, obj->buffer.pointer, + obj->buffer.length); + break; + case CAP_DRV_RT_VER_IDX: + cap->drv_rt_version = obj->integer.value; + break; + case CAP_DRV_SVN_IDX: + cap->drv_svn = obj->integer.value; + break; + case CAP_PLAT_ID_IDX: + memcpy(&cap->platform_id, obj->buffer.pointer, + obj->buffer.length); + break; + case CAP_OEM_ID_IDX: + memcpy(&cap->oem_id, obj->buffer.pointer, + obj->buffer.length); + break; + case CAP_OEM_INFO_IDX: + /*vendor specific data*/ + break; + default: + pr_err("Incorrect format of Update Capability.\n"); + goto free_acpi_buffer; + } + } + ret = 0; + +free_acpi_buffer: + ACPI_FREE(out_obj); + + return ret; +} + +static int query_buffer(struct pfru_com_buf_info *info) +{ + union acpi_object *out_obj; + acpi_handle handle; + int i, ret = -EINVAL; + + handle = ACPI_HANDLE(pfru_dev->dev); + out_obj = acpi_evaluate_dsm_typed(handle, &pfru_dev->uuid, + pfru_dev->rev_id, FUNC_QUERY_BUF, + NULL, ACPI_TYPE_PACKAGE); + if (!out_obj) + return -EINVAL; + + for (i = 0; i < out_obj->package.count; i++) { + union acpi_object *obj = &out_obj->package.elements[i]; + + if (obj->type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + switch (i) { + case BUF_STATUS_IDX: + info->status = obj->integer.value; + break; + case BUF_EXT_STATUS_IDX: + info->ext_status = obj->integer.value; + break; + case BUF_ADDR_LOW_IDX: + info->addr_lo = obj->integer.value; + break; + case BUF_ADDR_HI_IDX: + info->addr_hi = obj->integer.value; + break; + case BUF_SIZE_IDX: + info->buf_size = obj->integer.value; + break; + default: + pr_err("Incorrect format of Communication Buffer.\n"); + goto free_acpi_buffer; + } + } + ret = 0; + +free_acpi_buffer: + ACPI_FREE(out_obj); + + return ret; +} + +static int get_image_type(efi_manage_capsule_image_header_t *img_hdr, + int *type) +{ + guid_t *image_type_id; + + /* check whether this is a code injection or driver update */ + image_type_id = &img_hdr->image_type_id; + if (guid_equal(image_type_id, &pfru_dev->code_uuid)) + *type = CODE_INJECT_TYPE; + else if (guid_equal(image_type_id, &pfru_dev->drv_uuid)) + *type = DRIVER_UPDATE_TYPE; + else + return -EINVAL; + + return 0; +} + +/* + * The (u64 hw_ins) was introduced in UEFI spec version 2, + * and (u64 capsule_support) was introduced in version 3. + * The size needs to be adjusted accordingly. That is to + * say, version 1 should subtract the size of hw_ins+capsule_support, + * and version 2 should sbstract the size of capsule_support. + */ +static int adjust_efi_size(efi_manage_capsule_image_header_t *img_hdr, + int *size) +{ + int tmp_size = *size; + + tmp_size += sizeof(efi_manage_capsule_image_header_t); + switch (img_hdr->ver) { + case 1: + tmp_size -= 2 * sizeof(u64); + break; + case 2: + tmp_size -= sizeof(u64); + break; + default: + /* only support version 1 and 2 */ + return -EINVAL; + } + *size = tmp_size; + + return 0; +} + +/* + * Sanity check if the capsule image has a newer version than current one. + * Return: true if it is valid, false otherwise. + */ +static bool valid_version(const void *data, struct pfru_update_cap_info *cap) +{ + struct pfru_payload_hdr *payload_hdr; + efi_capsule_header_t *cap_hdr; + efi_manage_capsule_header_t *m_hdr; + efi_manage_capsule_image_header_t *m_img_hdr; + efi_image_auth_t *auth; + int type, size, ret; + + cap_hdr = (efi_capsule_header_t *)data; + size = cap_hdr->headersize; + m_hdr = (efi_manage_capsule_header_t *)(data + size); + /* + * Current data structure size plus variable array indicated + * by number of (emb_drv_cnt + payload_cnt) + */ + size += sizeof(efi_manage_capsule_header_t) + + (m_hdr->emb_drv_cnt + m_hdr->payload_cnt) * sizeof(u64); + m_img_hdr = (efi_manage_capsule_image_header_t *)(data + size); + + ret = get_image_type(m_img_hdr, &type); + if (ret) + return false; + + ret = adjust_efi_size(m_img_hdr, &size); + if (ret) + return false; + + auth = (efi_image_auth_t *)(data + size); + size += sizeof(u64) + auth->auth_info.hdr.len; + payload_hdr = (struct pfru_payload_hdr *)(data + size); + + /* Finally, compare the version. */ + if (type == CODE_INJECT_TYPE) + return payload_hdr->rt_ver >= cap->code_rt_version; + else + return payload_hdr->rt_ver >= cap->drv_rt_version; +} + +static void dump_update_result(struct pfru_updated_result *result) +{ + pr_debug("Update result:\n"); + pr_debug("Status:%d\n", result->status); + pr_debug("Extended Status:%d\n", result->ext_status); + pr_debug("Authentication Time Low:%lld\n", result->low_auth_time); + pr_debug("Authentication Time High:%lld\n", result->high_auth_time); + pr_debug("Execution Time Low:%lld\n", result->low_exec_time); + pr_debug("Execution Time High:%lld\n", result->high_exec_time); +} + +static int start_acpi_update(int action) +{ + union acpi_object *out_obj, in_obj, in_buf; + struct pfru_updated_result update_result; + acpi_handle handle; + int i, ret = -EINVAL; + + memset(&in_obj, 0, sizeof(in_obj)); + memset(&in_buf, 0, sizeof(in_buf)); + in_obj.type = ACPI_TYPE_PACKAGE; + in_obj.package.count = 1; + in_obj.package.elements = &in_buf; + in_buf.type = ACPI_TYPE_INTEGER; + in_buf.integer.value = action; + + handle = ACPI_HANDLE(pfru_dev->dev); + out_obj = acpi_evaluate_dsm_typed(handle, &pfru_dev->uuid, + pfru_dev->rev_id, FUNC_START, + &in_obj, ACPI_TYPE_PACKAGE); + if (!out_obj) + return -EINVAL; + + for (i = 0; i < out_obj->package.count; i++) { + union acpi_object *obj = &out_obj->package.elements[i]; + + if (obj->type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + switch (i) { + case UPDATE_STATUS_IDX: + update_result.status = obj->integer.value; + break; + case UPDATE_EXT_STATUS_IDX: + update_result.ext_status = obj->integer.value; + break; + case UPDATE_AUTH_TIME_LOW_IDX: + update_result.low_auth_time = obj->integer.value; + break; + case UPDATE_AUTH_TIME_HI_IDX: + update_result.high_auth_time = obj->integer.value; + break; + case UPDATE_EXEC_TIME_LOW_IDX: + update_result.low_exec_time = obj->integer.value; + break; + case UPDATE_EXEC_TIME_HI_IDX: + update_result.high_exec_time = obj->integer.value; + break; + default: + pr_err("Incorrect format of Runtime Update result.\n"); + goto free_acpi_buffer; + } + } + dump_update_result(&update_result); + ret = 0; + +free_acpi_buffer: + ACPI_FREE(out_obj); + + return ret; +} + +static long pfru_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + void __user *p; + int ret = 0, rev; + + p = (void __user *)arg; + + switch (cmd) { + case PFRU_IOC_SET_REV: + if (copy_from_user(&rev, p, sizeof(unsigned int))) + return -EFAULT; + if (!pfru_valid_revid(rev)) + return -EFAULT; + pfru_dev->rev_id = rev; + break; + case PFRU_IOC_STAGE: + ret = start_acpi_update(START_STAGE); + break; + case PFRU_IOC_ACTIVATE: + ret = start_acpi_update(START_ACTIVATE); + break; + case PFRU_IOC_STAGE_ACTIVATE: + ret = start_acpi_update(START_STAGE_ACTIVATE); + break; + default: + ret = -ENOIOCTLCMD; + break; + } + + return ret; +} + +#ifdef CONFIG_COMPAT +static long compat_pfru_ioctl(struct file *filep, unsigned int cmd, + unsigned long arg) +{ + return pfru_ioctl(filep, cmd, arg); +} +#endif + +static int pfru_open(struct inode *inode, struct file *file) +{ + return capable(CAP_SYS_RAWIO) ? stream_open(inode, file) : -EPERM; +} + +static ssize_t pfru_write(struct file *file, const char __user *buf, + size_t len, loff_t *ppos) +{ + struct pfru_update_cap_info cap; + struct pfru_com_buf_info info; + phys_addr_t phy_addr; + struct iov_iter iter; + struct iovec iov; + char *buf_ptr; + int ret; + + ret = query_buffer(&info); + if (ret) + return ret; + + if (len > info.buf_size) + return -EINVAL; + + iov.iov_base = (void __user *)buf; + iov.iov_len = len; + iov_iter_init(&iter, WRITE, &iov, 1, len); + + /* map the communication buffer */ + phy_addr = (phys_addr_t)(info.addr_lo | (info.addr_hi << 32)); + buf_ptr = memremap(phy_addr, info.buf_size, MEMREMAP_WB); + if (IS_ERR(buf_ptr)) + return PTR_ERR(buf_ptr); + if (!copy_from_iter_full(buf_ptr, len, &iter)) { + pr_err("error! could not read capsule file\n"); + ret = -EINVAL; + goto unmap; + } + + /* Check if the capsule header has a valid version number. */ + ret = query_capability(&cap); + if (ret) + goto unmap; + + if (cap.status != DSM_SUCCEED) { + ret = -EBUSY; + goto unmap; + } + if (!valid_version(buf_ptr, &cap)) { + ret = -EINVAL; + goto unmap; + } + ret = 0; +unmap: + memunmap(buf_ptr); + + return ret ?: len; +} + +static ssize_t pfru_read(struct file *filp, char __user *ubuf, + size_t size, loff_t *off) +{ + struct pfru_update_cap_info cap; + int ret; + + ret = query_capability(&cap); + if (ret) + return ret; + + size = min_t(size_t, size, sizeof(cap)); + + if (copy_to_user(ubuf, &cap, size)) + return -EFAULT; + + return size; +} + +static const struct file_operations acpi_pfru_fops = { + .owner = THIS_MODULE, + .write = pfru_write, + .read = pfru_read, + .open = pfru_open, + .unlocked_ioctl = pfru_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = compat_pfru_ioctl, +#endif + .llseek = noop_llseek, +}; + +static struct miscdevice pfru_misc_dev = { + .minor = MISC_DYNAMIC_MINOR, + .name = "pfru_update", + .nodename = "pfru/update", + .fops = &acpi_pfru_fops, +}; + +static int acpi_pfru_remove(struct platform_device *pdev) +{ + misc_deregister(&pfru_misc_dev); + kfree(pfru_dev); + pfru_dev = NULL; + + return 0; +} + +static int acpi_pfru_probe(struct platform_device *pdev) +{ + acpi_handle handle; + int ret; + + if (pfru_dev) { + pr_err("Duplicated PFRU INTC1080 detected, skip...\n"); + return 0; + } + + pfru_dev = kzalloc(sizeof(*pfru_dev), GFP_KERNEL); + if (!pfru_dev) + return -ENOMEM; + + ret = guid_parse(PFRU_UUID, &pfru_dev->uuid); + if (ret) + goto out; + ret = guid_parse(PFRU_CODE_INJ_UUID, &pfru_dev->code_uuid); + if (ret) + goto out; + ret = guid_parse(PFRU_DRV_UPDATE_UUID, &pfru_dev->drv_uuid); + if (ret) + goto out; + + /* default rev id is 1 */ + pfru_dev->rev_id = 1; + pfru_dev->dev = &pdev->dev; + handle = ACPI_HANDLE(pfru_dev->dev); + if (!acpi_has_method(handle, "_DSM")) { + pr_err("Missing _DSM\n"); + ret = -ENODEV; + goto out; + } + + ret = misc_register(&pfru_misc_dev); + if (ret) + goto out; + + return 0; +out: + kfree(pfru_dev); + pfru_dev = NULL; + + return ret; +} + +static const struct acpi_device_id acpi_pfru_ids[] = { + {"INTC1080", 0}, + {} +}; +MODULE_DEVICE_TABLE(acpi, acpi_pfru_ids); + +static struct platform_driver acpi_pfru_driver = { + .driver = { + .name = "pfru_update", + .acpi_match_table = acpi_pfru_ids, + }, + .probe = acpi_pfru_probe, + .remove = acpi_pfru_remove, +}; +module_platform_driver(acpi_pfru_driver); + +MODULE_DESCRIPTION("Platform Firmware Runtime Update device driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/uapi/linux/pfru.h b/include/uapi/linux/pfru.h new file mode 100644 index 000000000000..ca0b7433f79f --- /dev/null +++ b/include/uapi/linux/pfru.h @@ -0,0 +1,101 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * Platform Firmware Runtime Update header + * + * Copyright(c) 2021 Intel Corporation. All rights reserved. + */ +#ifndef __PFRU_H__ +#define __PFRU_H__ + +#include +#include + +#define PFRU_UUID "ECF9533B-4A3C-4E89-939E-C77112601C6D" +#define PFRU_CODE_INJ_UUID "B2F84B79-7B6E-4E45-885F-3FB9BB185402" +#define PFRU_DRV_UPDATE_UUID "4569DD8C-75F1-429A-A3D6-24DE8097A0DF" + +#define FUNC_STANDARD_QUERY 0 +#define FUNC_QUERY_UPDATE_CAP 1 +#define FUNC_QUERY_BUF 2 +#define FUNC_START 3 + +#define CODE_INJECT_TYPE 1 +#define DRIVER_UPDATE_TYPE 2 + +#define REVID_1 1 +#define REVID_2 2 + +#define PFRU_MAGIC 0xEE + +#define PFRU_IOC_SET_REV _IOW(PFRU_MAGIC, 0x01, unsigned int) +#define PFRU_IOC_STAGE _IOW(PFRU_MAGIC, 0x02, unsigned int) +#define PFRU_IOC_ACTIVATE _IOW(PFRU_MAGIC, 0x03, unsigned int) +#define PFRU_IOC_STAGE_ACTIVATE _IOW(PFRU_MAGIC, 0x04, unsigned int) + +static inline int pfru_valid_revid(int id) +{ + return (id == REVID_1) || (id == REVID_2); +} + +/* Capsule file payload header */ +struct pfru_payload_hdr { + __u32 sig; + __u32 hdr_version; + __u32 hdr_size; + __u32 hw_ver; + __u32 rt_ver; + uuid_t platform_id; +}; + +enum pfru_start_action { + START_STAGE, + START_ACTIVATE, + START_STAGE_ACTIVATE, +}; + +enum pfru_dsm_status { + DSM_SUCCEED, + DSM_FUNC_NOT_SUPPORT, + DSM_INVAL_INPUT, + DSM_HARDWARE_ERR, + DSM_RETRY_SUGGESTED, + DSM_UNKNOWN, + DSM_FUNC_SPEC_ERR, +}; + +struct pfru_update_cap_info { + enum pfru_dsm_status status; + __u32 update_cap; + + uuid_t code_type; + __u32 fw_version; + __u32 code_rt_version; + + uuid_t drv_type; + __u32 drv_rt_version; + __u32 drv_svn; + + uuid_t platform_id; + uuid_t oem_id; + + char oem_info[]; +}; + +struct pfru_com_buf_info { + enum pfru_dsm_status status; + enum pfru_dsm_status ext_status; + __u64 addr_lo; + __u64 addr_hi; + __u32 buf_size; +}; + +struct pfru_updated_result { + enum pfru_dsm_status status; + enum pfru_dsm_status ext_status; + __u64 low_auth_time; + __u64 high_auth_time; + __u64 low_exec_time; + __u64 high_exec_time; +}; + +#endif /* __PFRU_H__ */ From patchwork Thu Sep 16 16:03:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Yu X-Patchwork-Id: 12499571 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 4366FC433EF for ; Thu, 16 Sep 2021 15:58:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 26C9261212 for ; Thu, 16 Sep 2021 15:58:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240182AbhIPP7W (ORCPT ); Thu, 16 Sep 2021 11:59:22 -0400 Received: from mga12.intel.com ([192.55.52.136]:28123 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240084AbhIPP7W (ORCPT ); Thu, 16 Sep 2021 11:59:22 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10109"; a="202093304" X-IronPort-AV: E=Sophos;i="5.85,298,1624345200"; d="scan'208";a="202093304" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Sep 2021 08:57:59 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,298,1624345200"; d="scan'208";a="472823945" Received: from chenyu-desktop.sh.intel.com ([10.239.158.176]) by orsmga007.jf.intel.com with ESMTP; 16 Sep 2021 08:57:56 -0700 From: Chen Yu To: linux-acpi@vger.kernel.org Cc: linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , Len Brown , Dan Williams , Andy Shevchenko , Aubrey Li , Ashok Raj , Chen Yu , Mike Rapoport , Ard Biesheuvel Subject: [PATCH v3 4/5] drivers/acpi: Introduce Platform Firmware Runtime Update Telemetry Date: Fri, 17 Sep 2021 00:03:34 +0800 Message-Id: <8df66db9e8c30c762d676448e51c8536afe3b886.1631802163.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(PFRU) Telemetry Service is part of RoT (Root of Trust), which allows PFRU handler and other PFRU drivers to produce telemetry data to upper layer OS consumer at runtime. The linux provides interfaces for the user to query the parameters of telemetry data, and the user could read out the telemetry data accordingly. Typical log looks like: [SmmRuntimeUpdateHandler.ProcessSmmRuntimeUpdate] ProcessSmmRuntimeUpdate = START, Action = 2 [SmmRuntimeUpdateHandler.ProcessSmmRuntimeUpdate] FwVersion = 0, CodeInjectionVersion = 1 [ShadowSmmRuntimeUpdateImage] Image = 0x74D9B000, ImageSize = 0x1172 [ProcessSmmRuntimeUpdate] ShadowSmmRuntimeUpdateImage.Status = Success [ValidateSmmRuntimeUpdateImage] CapsuleHeader.CapsuleGuid = 6DCBD5ED-E82D-4C44-BDA1-7194199AD92A [ValidateSmmRuntimeUpdateImage] FmpCapHeader.Version = 1 [ValidateSmmRuntimeUpdateImage] FmpCapImageHeader.UpdateImageTypeId = B2F84B79-7B6E-4E45-885F-3FB9BB185402 [ValidateSmmRuntimeUpdateImage] SmmRuntimeUpdateVerifyImageWithDenylist.Status = Success [ValidateSmmRuntimeUpdateImage] SmmRuntimeUpdateVerifyImageWithAllowlist.Status = Success [SmmCodeInjectionVerifyPayloadHeader] PayloadHeader.Signature = 0x31494353 [SmmCodeInjectionVerifyPayloadHeader] PayloadHeader.PlatformId = 63462139-A8B1-AA4E-9024-F2BB53EA4723 [SmmCodeInjectionVerifyPayloadHeader] PayloadHeader.SupportedSmmFirmwareVersion = 0, PayloadHeader.SmmCodeInjectionRuntimeVersion = 1 [ProcessSmmRuntimeUpdate] ValidateSmmRuntimeUpdateImage.Status = Success CPU CSR[0B102D28] Before = 7FBF830E CPU CSR[0B102D28] After = 7FBF8310 [ProcessSmmRuntimeUpdate] ProcessSmmCodeInjection.Status = Success [SmmRuntimeUpdateHandler.ProcessSmmRuntimeUpdate] ProcessSmmRuntimeUpdate = End, Status = Success Signed-off-by: Chen Yu --- v3: Use __u32 instead of int and __64 instead of unsigned long in include/uapi/linux/pfru.h (Greg Kroah-Hartman) Rename the structure in uapi to start with a prefix pfru so as to avoid confusing in the global namespace. (Greg Kroah-Hartman) v2: Do similar clean up as pfru_update driver: Add sanity check for duplicated instance of ACPI device. Update the driver to work with allocated telem_device objects. (Mike Rapoport) For each switch case pair, get rid of the magic case numbers and add a default clause with the error handling. (Mike Rapoport) --- drivers/acpi/pfru/Kconfig | 14 + drivers/acpi/pfru/Makefile | 1 + drivers/acpi/pfru/pfru_telemetry.c | 412 +++++++++++++++++++++++++++++ include/uapi/linux/pfru.h | 43 +++ 4 files changed, 470 insertions(+) create mode 100644 drivers/acpi/pfru/pfru_telemetry.c diff --git a/drivers/acpi/pfru/Kconfig b/drivers/acpi/pfru/Kconfig index 3f31b7d95f3b..e2934058884e 100644 --- a/drivers/acpi/pfru/Kconfig +++ b/drivers/acpi/pfru/Kconfig @@ -13,3 +13,17 @@ config ACPI_PFRU To compile this driver as a module, choose M here: the module will be called pfru_update. + +config ACPI_PFRU_TELEMETRY + tristate "ACPI Platform Firmware Runtime Update Telemetry Service" + depends on ACPI_PFRU + help + PFRU(Platform Firmware Runtime Update) Telemetry Service is part of + RoT(Root of Trust), which allows Platform Firmware Runtime Update handler + and other PFRU drivers to produce telemetry data to upper layer OS consumer + at runtime. + + For more information, see: + + + If unsure, please say N. diff --git a/drivers/acpi/pfru/Makefile b/drivers/acpi/pfru/Makefile index 098cbe80cf3d..30060ba320ea 100644 --- a/drivers/acpi/pfru/Makefile +++ b/drivers/acpi/pfru/Makefile @@ -1,2 +1,3 @@ # SPDX-License-Identifier: GPL-2.0-only obj-$(CONFIG_ACPI_PFRU) += pfru_update.o +obj-$(CONFIG_ACPI_PFRU_TELEMETRY) += pfru_telemetry.o diff --git a/drivers/acpi/pfru/pfru_telemetry.c b/drivers/acpi/pfru/pfru_telemetry.c new file mode 100644 index 000000000000..96dc9e69edc0 --- /dev/null +++ b/drivers/acpi/pfru/pfru_telemetry.c @@ -0,0 +1,412 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ACPI Platform Firmware Runtime Update + * Telemetry Service Device Driver + * + * Copyright (C) 2021 Intel Corporation + * Author: Chen Yu + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +enum update_index { + LOG_STATUS_IDX, + LOG_EXT_STATUS_IDX, + LOG_MAX_SZ_IDX, + LOG_CHUNK1_LO_IDX, + LOG_CHUNK1_HI_IDX, + LOG_CHUNK1_SZ_IDX, + LOG_CHUNK2_LO_IDX, + LOG_CHUNK2_HI_IDX, + LOG_CHUNK2_SZ_IDX, + LOG_ROLLOVER_CNT_IDX, + LOG_RESET_CNT_IDX, +}; + +struct pfru_telem_device { + struct device *dev; + guid_t uuid; + struct pfru_telem_info info; +}; + +/* + * There would be only one instance of pfru_telem_device. + */ +static struct pfru_telem_device *telem_dev; + +static int get_pfru_data_info(struct pfru_telem_data_info *data_info, + int log_type) +{ + union acpi_object *out_obj, in_obj, in_buf; + acpi_handle handle; + int i, ret = -EINVAL; + + handle = ACPI_HANDLE(telem_dev->dev); + + memset(&in_obj, 0, sizeof(in_obj)); + memset(&in_buf, 0, sizeof(in_buf)); + in_obj.type = ACPI_TYPE_PACKAGE; + in_obj.package.count = 1; + in_obj.package.elements = &in_buf; + in_buf.type = ACPI_TYPE_INTEGER; + in_buf.integer.value = log_type; + + out_obj = acpi_evaluate_dsm_typed(handle, &telem_dev->uuid, + telem_dev->info.log_revid, FUNC_GET_DATA, + &in_obj, ACPI_TYPE_PACKAGE); + if (!out_obj) { + pr_err("Failed to invoke _DSM\n"); + return -EINVAL; + } + + for (i = 0; i < out_obj->package.count; i++) { + union acpi_object *obj = &out_obj->package.elements[i]; + + if (obj->type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + switch (i) { + case LOG_STATUS_IDX: + data_info->status = obj->integer.value; + break; + case LOG_EXT_STATUS_IDX: + data_info->ext_status = obj->integer.value; + break; + case LOG_MAX_SZ_IDX: + data_info->max_data_size = obj->integer.value; + break; + case LOG_CHUNK1_LO_IDX: + data_info->chunk1_addr_lo = obj->integer.value; + break; + case LOG_CHUNK1_HI_IDX: + data_info->chunk1_addr_hi = obj->integer.value; + break; + case LOG_CHUNK1_SZ_IDX: + data_info->chunk1_size = obj->integer.value; + break; + case LOG_CHUNK2_LO_IDX: + data_info->chunk2_addr_lo = obj->integer.value; + break; + case LOG_CHUNK2_HI_IDX: + data_info->chunk2_addr_hi = obj->integer.value; + break; + case LOG_CHUNK2_SZ_IDX: + data_info->chunk2_size = obj->integer.value; + break; + case LOG_ROLLOVER_CNT_IDX: + data_info->rollover_cnt = obj->integer.value; + break; + case LOG_RESET_CNT_IDX: + data_info->reset_cnt = obj->integer.value; + break; + default: + pr_err("Incorrect format of Telemetry info.\n"); + goto free_acpi_buffer; + } + } + ret = 0; + +free_acpi_buffer: + ACPI_FREE(out_obj); + + return ret; +} + +static int set_pfru_log_level(int level) +{ + union acpi_object *out_obj, *obj, in_obj, in_buf; + enum pfru_dsm_status status; + acpi_handle handle; + int ret = -EINVAL; + + handle = ACPI_HANDLE(telem_dev->dev); + + memset(&in_obj, 0, sizeof(in_obj)); + memset(&in_buf, 0, sizeof(in_buf)); + in_obj.type = ACPI_TYPE_PACKAGE; + in_obj.package.count = 1; + in_obj.package.elements = &in_buf; + in_buf.type = ACPI_TYPE_INTEGER; + in_buf.integer.value = level; + + out_obj = acpi_evaluate_dsm_typed(handle, &telem_dev->uuid, + telem_dev->info.log_revid, FUNC_SET_LEV, + &in_obj, ACPI_TYPE_PACKAGE); + if (!out_obj) + return -EINVAL; + + obj = &out_obj->package.elements[0]; + status = obj->integer.value; + if (status) { + pr_err("get MM telemetry level error status %d\n", + status); + goto free_acpi_buffer; + } + + obj = &out_obj->package.elements[1]; + status = obj->integer.value; + if (status) { + pr_err("get MM telemetry level error extend status %d\n", + status); + goto free_acpi_buffer; + } + ret = 0; + +free_acpi_buffer: + ACPI_FREE(out_obj); + + return ret; +} + +static int get_pfru_log_level(int *level) +{ + union acpi_object *out_obj, *obj; + enum pfru_dsm_status status; + acpi_handle handle; + int ret = -EINVAL; + + handle = ACPI_HANDLE(telem_dev->dev); + out_obj = acpi_evaluate_dsm_typed(handle, &telem_dev->uuid, + telem_dev->info.log_revid, FUNC_GET_LEV, + NULL, ACPI_TYPE_PACKAGE); + if (!out_obj) + return -EINVAL; + + obj = &out_obj->package.elements[0]; + if (obj->type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + status = obj->integer.value; + if (status) { + pr_err("get MM telemetry level error status %d\n", + status); + goto free_acpi_buffer; + } + + obj = &out_obj->package.elements[1]; + if (obj->type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + status = obj->integer.value; + if (status) { + pr_err("get MM telemetry level error status %d\n", + status); + goto free_acpi_buffer; + } + + obj = &out_obj->package.elements[2]; + if (obj->type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + *level = obj->integer.value; + + ret = 0; + +free_acpi_buffer: + ACPI_FREE(out_obj); + + return ret; +} + +static int valid_log_level(int level) +{ + return (level == LOG_ERR) || (level == LOG_WARN) || + (level == LOG_INFO) || (level == LOG_VERB); +} + +static int valid_log_type(int type) +{ + return (type == LOG_EXEC_IDX) || (type == LOG_HISTORY_IDX); +} + +static long pfru_telemetry_ioctl(struct file *file, unsigned int cmd, unsigned long arg) + +{ + struct pfru_telem_data_info data_info; + struct pfru_telem_info info; + void __user *p; + int ret = 0; + + p = (void __user *)arg; + + switch (cmd) { + case PFRU_LOG_IOC_SET_INFO: + if (copy_from_user(&info, p, sizeof(info))) + return -EFAULT; + if (pfru_valid_revid(info.log_revid)) + telem_dev->info.log_revid = info.log_revid; + + if (valid_log_level(info.log_level)) { + ret = set_pfru_log_level(info.log_level); + if (ret) + return ret; + telem_dev->info.log_level = info.log_level; + } + if (valid_log_type(info.log_type)) + telem_dev->info.log_type = info.log_type; + break; + case PFRU_LOG_IOC_GET_INFO: + ret = get_pfru_log_level(&info.log_level); + if (ret) + return ret; + info.log_type = telem_dev->info.log_type; + info.log_revid = telem_dev->info.log_revid; + if (copy_to_user(p, &info, sizeof(info))) + ret = -EFAULT; + break; + case PFRU_LOG_IOC_GET_DATA_INFO: + ret = get_pfru_data_info(&data_info, telem_dev->info.log_type); + if (ret) + return ret; + if (copy_to_user(p, &data_info, sizeof(struct pfru_telem_data_info))) + ret = -EFAULT; + break; + default: + ret = -ENOIOCTLCMD; + break; + } + return ret; +} + +static ssize_t pfru_telemetry_read(struct file *filp, char __user *ubuf, + size_t size, loff_t *off) +{ + struct pfru_telem_data_info info; + phys_addr_t base_addr; + int buf_size, ret; + char *buf_ptr; + + if (*off < 0) + return -EINVAL; + + ret = get_pfru_data_info(&info, telem_dev->info.log_type); + if (ret) { + pr_err("Could not get telemetry data info %d\n", ret); + return ret; + } + + base_addr = (phys_addr_t)(info.chunk2_addr_lo | + (info.chunk2_addr_hi << 32)); + if (!base_addr) { + pr_err("Telemetry data not ready\n"); + return -EBUSY; + } + + buf_size = info.max_data_size; + if (*off >= buf_size) + return 0; + + buf_ptr = memremap(base_addr, buf_size, MEMREMAP_WB); + if (IS_ERR(buf_ptr)) + return PTR_ERR(buf_ptr); + + size = min_t(size_t, size, buf_size - *off); + + ret = -EFAULT; + if (copy_to_user(ubuf, buf_ptr + *off, size)) + goto out; + ret = 0; +out: + memunmap(buf_ptr); + + return ret ? ret : size; +} + +#ifdef CONFIG_COMPAT +static long compat_pfru_telemetry_ioctl(struct file *filep, unsigned int cmd, + unsigned long arg) +{ + return pfru_telemetry_ioctl(filep, cmd, arg); +} +#endif + +static const struct file_operations acpi_pfru_telemetry_fops = { + .owner = THIS_MODULE, + .read = pfru_telemetry_read, + .unlocked_ioctl = pfru_telemetry_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = compat_pfru_telemetry_ioctl, +#endif + .llseek = noop_llseek, +}; + +static struct miscdevice pfru_telemetry_misc_dev = { + .minor = MISC_DYNAMIC_MINOR, + .name = "pfru_telemetry", + .nodename = "pfru/telemetry", + .fops = &acpi_pfru_telemetry_fops, +}; + +static int acpi_pfru_telemetry_remove(struct platform_device *pdev) +{ + misc_deregister(&pfru_telemetry_misc_dev); + kfree(telem_dev); + telem_dev = NULL; + + return 0; +} + +static int acpi_pfru_telemetry_probe(struct platform_device *pdev) +{ + acpi_handle handle; + int ret; + + if (telem_dev) { + pr_err("Duplicated PFRU Telemetry INTC1081 detected, skip...\n"); + return 0; + } + + telem_dev = kzalloc(sizeof(*telem_dev), GFP_KERNEL); + if (!telem_dev) + return -ENOMEM; + + ret = guid_parse(PFRU_TELEMETRY_UUID, &telem_dev->uuid); + if (ret) + goto out; + + telem_dev->info.log_revid = 1; + telem_dev->dev = &pdev->dev; + handle = ACPI_HANDLE(telem_dev->dev); + if (!acpi_has_method(handle, "_DSM")) { + pr_err("Missing _DSM\n"); + ret = -ENODEV; + goto out; + } + + ret = misc_register(&pfru_telemetry_misc_dev); + if (ret) + goto out; + + return 0; +out: + kfree(telem_dev); + telem_dev = NULL; + + return ret; +} + +static const struct acpi_device_id acpi_pfru_telemetry_ids[] = { + {"INTC1081", 0}, + {} +}; +MODULE_DEVICE_TABLE(acpi, acpi_pfru_telemetry_ids); + +static struct platform_driver acpi_pfru_telemetry_driver = { + .driver = { + .name = "pfru_telemetry", + .acpi_match_table = acpi_pfru_telemetry_ids, + }, + .probe = acpi_pfru_telemetry_probe, + .remove = acpi_pfru_telemetry_remove, +}; +module_platform_driver(acpi_pfru_telemetry_driver); + +MODULE_DESCRIPTION("Platform Firmware Runtime Update Telemetry Service device driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/uapi/linux/pfru.h b/include/uapi/linux/pfru.h index ca0b7433f79f..b04852602133 100644 --- a/include/uapi/linux/pfru.h +++ b/include/uapi/linux/pfru.h @@ -98,4 +98,47 @@ struct pfru_updated_result { __u64 high_exec_time; }; +#define PFRU_TELEMETRY_UUID "75191659-8178-4D9D-B88F-AC5E5E93E8BF" + +/* Telemetry structures. */ +struct pfru_telem_data_info { + enum pfru_dsm_status status; + enum pfru_dsm_status ext_status; + __u64 chunk1_addr_lo; + __u64 chunk1_addr_hi; + __u64 chunk2_addr_lo; + __u64 chunk2_addr_hi; + __u32 max_data_size; + __u32 chunk1_size; + __u32 chunk2_size; + __u32 rollover_cnt; + __u32 reset_cnt; +}; + +struct pfru_telem_info { + __u32 log_level; + __u32 log_type; + __u32 log_revid; +}; + +/* Two logs: history and execution log */ +#define LOG_EXEC_IDX 0 +#define LOG_HISTORY_IDX 1 +#define NR_LOG_TYPE 2 + +#define LOG_ERR 0 +#define LOG_WARN 1 +#define LOG_INFO 2 +#define LOG_VERB 4 + +#define FUNC_SET_LEV 1 +#define FUNC_GET_LEV 2 +#define FUNC_GET_DATA 3 + +#define LOG_NAME_SIZE 10 + +#define PFRU_LOG_IOC_SET_INFO _IOW(PFRU_MAGIC, 0x05, struct pfru_telem_info) +#define PFRU_LOG_IOC_GET_INFO _IOR(PFRU_MAGIC, 0x06, struct pfru_telem_info) +#define PFRU_LOG_IOC_GET_DATA_INFO _IOR(PFRU_MAGIC, 0x07, struct pfru_telem_data_info) + #endif /* __PFRU_H__ */ From patchwork Thu Sep 16 16:04:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Yu X-Patchwork-Id: 12499581 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 7FDBCC433FE for ; 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16 Sep 2021 08:59:15 -0700 From: Chen Yu To: linux-acpi@vger.kernel.org Cc: linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , Len Brown , Dan Williams , Andy Shevchenko , Aubrey Li , Ashok Raj , Chen Yu , Mike Rapoport , Ard Biesheuvel , Shuah Khan , linux-kselftest@vger.kernel.org, Dou Shengnan Subject: [PATCH v3 5/5] selftests/pfru: add test for Platform Firmware Runtime Update and Telemetry Date: Fri, 17 Sep 2021 00:04:55 +0800 Message-Id: <80966998ecc8fd7842a7899b4846b23b9b9b76c3.1631802163.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 Introduce a simple test for Platform Firmware Runtime Update and Telemetry drivers. It is based on ioctl to either update firmware driver or code injection, and read corresponding PFRU Telemetry log into user space. For example: ./pfru_test -h usage: pfru_test [OPTIONS] code injection: -l, --load -s, --stage -a, --activate -u, --update [stage and activate] -q, --query -d, --revid update telemetry: -G, --getloginfo -T, --type(0:execution, 1:history) -L, --level(0, 1, 2, 4) -R, --read -D, --revid log ./pfru_test -G log_level:4 log_type:0 log_revid:2 max_data_size:65536 chunk1_size:0 chunk2_size:1401 rollover_cnt:0 reset_cnt:4 ./pfru_test -q code injection image type:794bf8b2-6e7b-454e-885f-3fb9bb185402 fw_version:0 code_rt_version:1 driver update image type:0e5f0b14-f849-7945-ad81-bc7b6d2bb245 drv_rt_version:0 drv_svn:0 platform id:39214663-b1a8-4eaa-9024-f2bb53ea4723 oem id:a36db54f-ea2a-e14e-b7c4-b5780e51ba3d launch the update: ./pfru_test -l yours.cap -u -T 1 -L 4 Tested-by: Dou Shengnan Signed-off-by: Chen Yu --- v3: No change since v2. v2: Do not allow non-root user to run this test. (Shuah Khan) Test runs on platform without pfru_telemetry should skip instead of reporting failure/error. (Shuah Khan) Reuse uapi/linux/pfru.h instead of copying it into the test directory. (Mike Rapoport) --- include/uapi/linux/pfru.h | 5 + tools/testing/selftests/Makefile | 1 + tools/testing/selftests/pfru/Makefile | 7 + tools/testing/selftests/pfru/config | 2 + tools/testing/selftests/pfru/pfru_test.c | 328 +++++++++++++++++++++++ 5 files changed, 343 insertions(+) create mode 100644 tools/testing/selftests/pfru/Makefile create mode 100644 tools/testing/selftests/pfru/config create mode 100644 tools/testing/selftests/pfru/pfru_test.c diff --git a/include/uapi/linux/pfru.h b/include/uapi/linux/pfru.h index b04852602133..c8a98efd5eb6 100644 --- a/include/uapi/linux/pfru.h +++ b/include/uapi/linux/pfru.h @@ -8,7 +8,12 @@ #define __PFRU_H__ #include +#ifdef __KERNEL__ #include +#else +#include +#include +#endif #define PFRU_UUID "ECF9533B-4A3C-4E89-939E-C77112601C6D" #define PFRU_CODE_INJ_UUID "B2F84B79-7B6E-4E45-885F-3FB9BB185402" diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index c852eb40c4f7..9f1d7b5ea4a7 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -58,6 +58,7 @@ TARGETS += seccomp TARGETS += sgx TARGETS += sigaltstack TARGETS += size +TARGETS += pfru TARGETS += sparc64 TARGETS += splice TARGETS += static_keys diff --git a/tools/testing/selftests/pfru/Makefile b/tools/testing/selftests/pfru/Makefile new file mode 100644 index 000000000000..c61916ccf637 --- /dev/null +++ b/tools/testing/selftests/pfru/Makefile @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: GPL-2.0+ + +CFLAGS += -Wall -O2 +LDLIBS := -luuid + +TEST_GEN_PROGS := pfru_test +include ../lib.mk diff --git a/tools/testing/selftests/pfru/config b/tools/testing/selftests/pfru/config new file mode 100644 index 000000000000..37f53609acbd --- /dev/null +++ b/tools/testing/selftests/pfru/config @@ -0,0 +1,2 @@ +CONFIG_ACPI_PFRU=m +CONFIG_ACPI_PFRU_TELEMETRY=m diff --git a/tools/testing/selftests/pfru/pfru_test.c b/tools/testing/selftests/pfru/pfru_test.c new file mode 100644 index 000000000000..b3799d73ab1c --- /dev/null +++ b/tools/testing/selftests/pfru/pfru_test.c @@ -0,0 +1,328 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Tests Runtime Update/Telemetry (see Documentation/x86/pfru_update.rst) + */ +#define _GNU_SOURCE +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "../../../../include/uapi/linux/pfru.h" + +#define MAX_LOG_SIZE 65536 + +char *capsule_name; +int action, query_cap, log_type, log_level, log_read, log_getinfo, + revid, log_revid; +int set_log_level, set_log_type, + set_revid, set_log_revid; + +char *progname; + +static int valid_log_level(int level) +{ + return (level == LOG_ERR) || (level == LOG_WARN) || + (level == LOG_INFO) || (level == LOG_VERB); +} + +static int valid_log_type(int type) +{ + return (type == LOG_EXEC_IDX) || (type == LOG_HISTORY_IDX); +} + +static void help(void) +{ + fprintf(stderr, + "usage: %s [OPTIONS]\n" + " code injection:\n" + " -l, --load\n" + " -s, --stage\n" + " -a, --activate\n" + " -u, --update [stage and activate]\n" + " -q, --query\n" + " -d, --revid update\n" + " telemetry:\n" + " -G, --getloginfo\n" + " -T, --type(0:execution, 1:history)\n" + " -L, --level(0, 1, 2, 4)\n" + " -R, --read\n" + " -D, --revid log\n", + progname); +} + +char *option_string = "l:sauqd:GT:L:RD:h"; +static struct option long_options[] = { + {"load", required_argument, 0, 'l'}, + {"stage", no_argument, 0, 's'}, + {"activate", no_argument, 0, 'a'}, + {"update", no_argument, 0, 'u'}, + {"query", no_argument, 0, 'q'}, + {"getloginfo", no_argument, 0, 'G'}, + {"type", required_argument, 0, 'T'}, + {"level", required_argument, 0, 'L'}, + {"read", no_argument, 0, 'R'}, + {"setrev", required_argument, 0, 'd'}, + {"setrevlog", required_argument, 0, 'D'}, + {"help", no_argument, 0, 'h'}, + {} +}; + +static void parse_options(int argc, char **argv) +{ + char *pathname; + int c; + + pathname = strdup(argv[0]); + progname = basename(pathname); + + while (1) { + int option_index = 0; + + c = getopt_long(argc, argv, option_string, + long_options, &option_index); + if (c == -1) + break; + switch (c) { + case 'l': + capsule_name = optarg; + break; + case 's': + action = 1; + break; + case 'a': + action = 2; + break; + case 'u': + action = 3; + break; + case 'q': + query_cap = 1; + break; + case 'G': + log_getinfo = 1; + break; + case 'T': + log_type = atoi(optarg); + set_log_type = 1; + break; + case 'L': + log_level = atoi(optarg); + set_log_level = 1; + break; + case 'R': + log_read = 1; + break; + case 'd': + revid = atoi(optarg); + set_revid = 1; + break; + case 'D': + log_revid = atoi(optarg); + set_log_revid = 1; + break; + case 'h': + help(); + break; + default: + break; + } + } +} + +void print_cap(struct pfru_update_cap_info *cap) +{ + char *uuid = malloc(37); + + if (!uuid) { + perror("Can not allocate uuid buffer\n"); + exit(1); + } + uuid_unparse(cap->code_type, uuid); + printf("code injection image type:%s\n", uuid); + printf("fw_version:%d\n", cap->fw_version); + printf("code_rt_version:%d\n", cap->code_rt_version); + + uuid_unparse(cap->drv_type, uuid); + printf("driver update image type:%s\n", uuid); + printf("drv_rt_version:%d\n", cap->drv_rt_version); + printf("drv_svn:%d\n", cap->drv_svn); + + uuid_unparse(cap->platform_id, uuid); + printf("platform id:%s\n", uuid); + uuid_unparse(cap->oem_id, uuid); + printf("oem id:%s\n", uuid); + + free(uuid); +} + +int main(int argc, char *argv[]) +{ + int fd_update, fd_log, fd_capsule; + struct pfru_telem_data_info data_info; + struct pfru_telem_info info; + struct pfru_update_cap_info cap; + void *addr_map_capsule; + struct stat st; + char *log_buf; + int ret = 0; + + if (getuid() != 0) { + printf("Please run the test as root - Exiting.\n"); + return 1; + } + + parse_options(argc, argv); + + fd_update = open("/dev/pfru/update", O_RDWR); + if (fd_update < 0) { + printf("PFRU device not supported - Quit...\n"); + return 1; + } + + if (query_cap) { + ret = read(fd_update, &cap, sizeof(cap)); + if (ret == -1) { + perror("Read error."); + return 1; + } + print_cap(&cap); + } + + fd_log = open("/dev/pfru/telemetry", O_RDWR); + if (fd_log < 0) { + printf("PFRU telemetry not supported. Skip...\n"); + goto skip_log_set; + } + + if (log_getinfo) { + ret = ioctl(fd_log, PFRU_LOG_IOC_GET_DATA_INFO, &data_info); + if (ret) { + perror("Get log data info failed."); + return 1; + } + ret = ioctl(fd_log, PFRU_LOG_IOC_GET_INFO, &info); + if (ret) { + perror("Get log info failed."); + return 1; + } + printf("log_level:%d\n", info.log_level); + printf("log_type:%d\n", info.log_type); + printf("log_revid:%d\n", info.log_revid); + printf("max_data_size:%d\n", data_info.max_data_size); + printf("chunk1_size:%d\n", data_info.chunk1_size); + printf("chunk2_size:%d\n", data_info.chunk2_size); + printf("rollover_cnt:%d\n", data_info.rollover_cnt); + printf("reset_cnt:%d\n", data_info.reset_cnt); + + return 0; + } + + info.log_level = -1; + info.log_type = -1; + info.log_revid = -1; + + if (set_log_level) { + if (!valid_log_level(log_level)) { + printf("Invalid log level %d\n", + log_level); + } else { + info.log_level = log_level; + } + } + if (set_log_type) { + if (!valid_log_type(log_type)) { + printf("Invalid log type %d\n", + log_type); + } else { + info.log_type = log_type; + } + } + if (set_log_revid) { + if (!pfru_valid_revid(log_revid)) { + printf("Invalid log revid %d\n", + log_revid); + } else { + info.log_revid = log_revid; + } + } + + ret = ioctl(fd_log, PFRU_LOG_IOC_SET_INFO, &info); + if (ret) { + perror("Log information set failed.(log_level, log_type, log_revid)"); + return 1; + } + +skip_log_set: + if (set_revid) { + ret = ioctl(fd_update, PFRU_IOC_SET_REV, &revid); + if (ret) { + perror("pfru update revid set failed"); + return 1; + } + printf("pfru update revid set to %d\n", revid); + } + + if (capsule_name) { + fd_capsule = open(capsule_name, O_RDONLY); + if (fd_capsule < 0) { + perror("Can not open capsule file..."); + return 1; + } + if (fstat(fd_capsule, &st) < 0) { + perror("Can not fstat capsule file..."); + return 1; + } + addr_map_capsule = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, + fd_capsule, 0); + if (addr_map_capsule == MAP_FAILED) { + perror("Failed to mmap capsule file."); + return 1; + } + ret = write(fd_update, (char *)addr_map_capsule, st.st_size); + printf("Load %d bytes of capsule file into the system\n", + ret); + if (ret == -1) { + perror("Failed to load capsule file"); + return 1; + } + munmap(addr_map_capsule, st.st_size); + printf("Load done.\n"); + } + + if (action) { + if (action == 1) + ret = ioctl(fd_update, PFRU_IOC_STAGE, NULL); + else if (action == 2) + ret = ioctl(fd_update, PFRU_IOC_ACTIVATE, NULL); + else if (action == 3) + ret = ioctl(fd_update, PFRU_IOC_STAGE_ACTIVATE, NULL); + else + return 1; + printf("Update finished, return %d\n", ret); + } + + if (fd_log > 0 && log_read) { + log_buf = malloc(MAX_LOG_SIZE + 1); + if (!log_buf) { + perror("log_buf allocate failed."); + return 1; + } + ret = read(fd_log, log_buf, MAX_LOG_SIZE); + if (ret == -1) { + perror("Read error."); + return 1; + } + log_buf[ret] = '\0'; + printf("%s\n", log_buf); + free(log_buf); + } + + return 0; +}