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 */ From patchwork Sat Oct 16 10:40:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Yu X-Patchwork-Id: 12563571 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 BEE67C433F5 for ; Sat, 16 Oct 2021 10:38:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A7C5760F46 for ; Sat, 16 Oct 2021 10:38:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244139AbhJPKkO (ORCPT ); Sat, 16 Oct 2021 06:40:14 -0400 Received: from mga01.intel.com ([192.55.52.88]:61513 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244214AbhJPKkO (ORCPT ); Sat, 16 Oct 2021 06:40:14 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10138"; a="251491146" X-IronPort-AV: E=Sophos;i="5.85,378,1624345200"; d="scan'208";a="251491146" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Oct 2021 03:38:06 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,378,1624345200"; d="scan'208";a="492936539" Received: from chenyu-desktop.sh.intel.com ([10.239.158.176]) by orsmga008.jf.intel.com with ESMTP; 16 Oct 2021 03:38:02 -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 , Chen Yu Subject: [PATCH v4 2/4] drivers/acpi: Introduce Platform Firmware Runtime Update device driver Date: Sat, 16 Oct 2021 18:40:51 +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 Introduce the pfru_update driver which can be used for Platform Firmware Runtime code injection and driver update[1]. 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. [1] https://uefi.org/sites/default/files/resources/Intel_MM_OS_Interface_Spec_Rev100.pdf Signed-off-by: Chen Yu --- v4: Add Documentation/ABI/testing/pfru (Rafael J. Wysocki) Change all pr_debug() to dev_dbg() (Greg Kroah-Hartman, Rafael J. Wysocki) Change the error code ENOIOCTLCMD to ENOTTY in ioctl. (Greg Kroah-Hartman) Remove compat ioctl. (Greg Kroah-Hartman) Change /dev/pfru/update to /dev/acpi_pfru (Greg Kroah-Hartman) Remove valid_cap_type() and do sanity check in query_capability(). (Rafael J. Wysocki) Remove the loop in query_capability(). (Rafael J. Wysocki) Do not fail if the package has more elements than expected, and return error if the number of package elements is too small. (Rafael J. Wysocki) Return the type or a negative error code in get_image_type() (Rafael J. Wysocki) Put the comment inside the function rather than outside. (Rafael J. Wysocki) Return the size or a negative error code adjust_efi_size() (Rafael J. Wysocki) Return -EINVAL rather than -EFAULT if revison id is incorrect. (Rafael J. Wysocki) Move the an read() of pfru into ioctl(), and using read() for the telemetry retrieval. So as to avoid the telemetry device file, the write() will be the code injection/update, the read() will be telemetry retrieval and all of the rest can be ioctl()s under one special device file. (Rafael J. Wysocki) 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) --- Documentation/ABI/testing/pfru | 41 ++ .../userspace-api/ioctl/ioctl-number.rst | 1 + drivers/acpi/Kconfig | 1 + drivers/acpi/Makefile | 1 + drivers/acpi/pfru/Kconfig | 16 + drivers/acpi/pfru/Makefile | 2 + drivers/acpi/pfru/pfru_update.c | 567 ++++++++++++++++++ include/uapi/linux/pfru.h | 102 ++++ 8 files changed, 731 insertions(+) create mode 100644 Documentation/ABI/testing/pfru 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/ABI/testing/pfru b/Documentation/ABI/testing/pfru new file mode 100644 index 000000000000..b8bc81703f46 --- /dev/null +++ b/Documentation/ABI/testing/pfru @@ -0,0 +1,41 @@ +What: /dev/acpi_pfru +Date: October 2021 +KernelVersion: 5.15 +Contact: Chen Yu +Description: + The ioctl interface to drivers for platform firmware runtime + update(PFRU). Following actions are supported: + + * PFRU_IOC_QUERY_CAP: Read the PFRU Runtime Update capability. + The value is a structure of pfru_update_cap_info. + See include/uapi/linux/pfru.h for definition. + + * PFRU_SET_REV: Set the Revision ID for PFRU Runtime Update. + It could be either 1 or 2. + + * PFRU_IOC_STAGE: 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_LOG_IOC_SET_INFO: set log information in Telemetry + Service. The input is a structure of pfru_log_info. + This structure includes log revision id(1 or 2), + log level(0 : Error Message, 1 : Warning Message, + 2 : Informational Message, 4 : Verbose), log data type + (0 : Execution Log, 1 : History Information). + See include/uapi/linux/pfru.h for definition. + + * PFRU_LOG_IOC_GET_INFO: get log information in Telemetry. + The output is a structure of pfru_log_info. + + * PFRU_LOG_IOC_GET_DATA_INFO: get log data information in + Telemetry. The output is a structure of pfru_log_data_info. + See include/uapi/linux/pfru.h for definition. + + Besides ioctl interface, write() and read() are supported on + /dev/acpi_pfru. The write() will be the code injection/update, + and the read() will be telemetry retrieval. 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-$(CONFIG_ACPI_PFRU) += pfru/ # processor has its own "processor." module_param namespace processor-y := processor_driver.o diff --git a/drivers/acpi/pfru/Kconfig b/drivers/acpi/pfru/Kconfig new file mode 100644 index 000000000000..87388a46e760 --- /dev/null +++ b/drivers/acpi/pfru/Kconfig @@ -0,0 +1,16 @@ +# SPDX-License-Identifier: GPL-2.0 +config ACPI_PFRU + tristate "ACPI Platform Firmware Runtime Update (PFRU)" + depends on 64BIT + help + In order to reduce the system reboot times and update the platform firmware + in time, Platform Firmware Runtime Update is leveraged to patch the system + without reboot. This driver supports Platform Firmware Runtime Update, + which is composed of two parts: code injection and driver update. It also + allows telemetry data to be retrieved from the platform firmware. + + For more information, see: + + + To compile this driver as a module, choose M here: + the module will be called pfru_update. diff --git a/drivers/acpi/pfru/Makefile b/drivers/acpi/pfru/Makefile new file mode 100644 index 000000000000..098cbe80cf3d --- /dev/null +++ b/drivers/acpi/pfru/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-$(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..f57a39e79808 --- /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, + CAP_NR_IDX, +}; + +enum buf_index { + BUF_STATUS_IDX, + BUF_EXT_STATUS_IDX, + BUF_ADDR_LOW_IDX, + BUF_ADDR_HI_IDX, + BUF_SIZE_IDX, + BUF_NR_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, + UPDATE_NR_IDX, +}; + +struct pfru_device { + guid_t uuid, code_uuid, drv_uuid; + int rev_id; + struct device *dev; +}; + +static struct pfru_device *pfru_dev; + +static int query_capability(struct pfru_update_cap_info *cap) +{ + union acpi_object *out_obj; + acpi_handle handle; + int 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 ret; + + if (out_obj->package.count < CAP_NR_IDX) + goto free_acpi_buffer; + + if (out_obj->package.elements[CAP_STATUS_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + cap->status = out_obj->package.elements[CAP_STATUS_IDX].integer.value; + + if (out_obj->package.elements[CAP_UPDATE_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + cap->update_cap = out_obj->package.elements[CAP_UPDATE_IDX].integer.value; + + if (out_obj->package.elements[CAP_CODE_TYPE_IDX].type != ACPI_TYPE_BUFFER) + goto free_acpi_buffer; + + memcpy(&cap->code_type, + out_obj->package.elements[CAP_CODE_TYPE_IDX].buffer.pointer, + out_obj->package.elements[CAP_CODE_TYPE_IDX].buffer.length); + + if (out_obj->package.elements[CAP_FW_VER_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + cap->fw_version = + out_obj->package.elements[CAP_FW_VER_IDX].integer.value; + + if (out_obj->package.elements[CAP_CODE_RT_VER_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + cap->code_rt_version = + out_obj->package.elements[CAP_CODE_RT_VER_IDX].integer.value; + + if (out_obj->package.elements[CAP_DRV_TYPE_IDX].type != ACPI_TYPE_BUFFER) + goto free_acpi_buffer; + + memcpy(&cap->drv_type, + out_obj->package.elements[CAP_DRV_TYPE_IDX].buffer.pointer, + out_obj->package.elements[CAP_DRV_TYPE_IDX].buffer.length); + + if (out_obj->package.elements[CAP_DRV_RT_VER_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + cap->drv_rt_version = + out_obj->package.elements[CAP_DRV_RT_VER_IDX].integer.value; + + if (out_obj->package.elements[CAP_DRV_SVN_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + cap->drv_svn = + out_obj->package.elements[CAP_DRV_SVN_IDX].integer.value; + + if (out_obj->package.elements[CAP_PLAT_ID_IDX].type != ACPI_TYPE_BUFFER) + goto free_acpi_buffer; + + memcpy(&cap->platform_id, + out_obj->package.elements[CAP_PLAT_ID_IDX].buffer.pointer, + out_obj->package.elements[CAP_PLAT_ID_IDX].buffer.length); + + if (out_obj->package.elements[CAP_OEM_ID_IDX].type != ACPI_TYPE_BUFFER) + goto free_acpi_buffer; + + memcpy(&cap->oem_id, + out_obj->package.elements[CAP_OEM_ID_IDX].buffer.pointer, + out_obj->package.elements[CAP_OEM_ID_IDX].buffer.length); + 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 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 ret; + + if (out_obj->package.count < BUF_NR_IDX) + goto free_acpi_buffer; + + if (out_obj->package.elements[BUF_STATUS_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + info->status = out_obj->package.elements[BUF_STATUS_IDX].integer.value; + + if (out_obj->package.elements[BUF_EXT_STATUS_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + info->ext_status = + out_obj->package.elements[BUF_EXT_STATUS_IDX].integer.value; + + if (out_obj->package.elements[BUF_ADDR_LOW_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + info->addr_lo = + out_obj->package.elements[BUF_ADDR_LOW_IDX].integer.value; + + if (out_obj->package.elements[BUF_ADDR_HI_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + info->addr_hi = + out_obj->package.elements[BUF_ADDR_HI_IDX].integer.value; + + if (out_obj->package.elements[BUF_SIZE_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + info->buf_size = out_obj->package.elements[BUF_SIZE_IDX].integer.value; + + ret = 0; +free_acpi_buffer: + ACPI_FREE(out_obj); + + return ret; +} + +static int get_image_type(efi_manage_capsule_image_header_t *img_hdr) +{ + guid_t *image_type_id = &img_hdr->image_type_id; + + /* check whether this is a code injection or driver update */ + if (guid_equal(image_type_id, &pfru_dev->code_uuid)) + return CODE_INJECT_TYPE; + else if (guid_equal(image_type_id, &pfru_dev->drv_uuid)) + return DRIVER_UPDATE_TYPE; + else + return -EINVAL; +} + +static int adjust_efi_size(efi_manage_capsule_image_header_t *img_hdr, + int size) +{ + /* + * 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. + */ + size += sizeof(efi_manage_capsule_image_header_t); + switch (img_hdr->ver) { + case 1: + size -= 2 * sizeof(u64); + break; + case 2: + size -= sizeof(u64); + break; + default: + /* only support version 1 and 2 */ + return -EINVAL; + } + + return size; +} + +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; + + /* + * Sanity check if the capsule image has a newer version + * than current one. + */ + 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); + + type = get_image_type(m_img_hdr); + if (type < 0) + return false; + + size = adjust_efi_size(m_img_hdr, size); + if (size < 0) + 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) +{ + dev_dbg(pfru_dev->dev, "Update result:\n"); + dev_dbg(pfru_dev->dev, "Status:%d\n", result->status); + dev_dbg(pfru_dev->dev, "Extended Status:%d\n", result->ext_status); + dev_dbg(pfru_dev->dev, "Authentication Time Low:%lld\n", + result->low_auth_time); + dev_dbg(pfru_dev->dev, "Authentication Time High:%lld\n", + result->high_auth_time); + dev_dbg(pfru_dev->dev, "Execution Time Low:%lld\n", + result->low_exec_time); + dev_dbg(pfru_dev->dev, "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 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 ret; + + if (out_obj->package.count < UPDATE_NR_IDX) + goto free_acpi_buffer; + + if (out_obj->package.elements[UPDATE_STATUS_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + update_result.status = + out_obj->package.elements[UPDATE_STATUS_IDX].integer.value; + + if (out_obj->package.elements[UPDATE_EXT_STATUS_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + update_result.ext_status = + out_obj->package.elements[UPDATE_EXT_STATUS_IDX].integer.value; + + if (out_obj->package.elements[UPDATE_AUTH_TIME_LOW_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + update_result.low_auth_time = + out_obj->package.elements[UPDATE_AUTH_TIME_LOW_IDX].integer.value; + + if (out_obj->package.elements[UPDATE_AUTH_TIME_HI_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + update_result.high_auth_time = + out_obj->package.elements[UPDATE_AUTH_TIME_HI_IDX].integer.value; + + if (out_obj->package.elements[UPDATE_EXEC_TIME_LOW_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + update_result.low_exec_time = + out_obj->package.elements[UPDATE_EXEC_TIME_LOW_IDX].integer.value; + + if (out_obj->package.elements[UPDATE_EXEC_TIME_HI_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + update_result.high_exec_time = + out_obj->package.elements[UPDATE_EXEC_TIME_HI_IDX].integer.value; + + 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) +{ + struct pfru_update_cap_info cap; + void __user *p; + int ret = 0, rev; + + if (!pfru_dev) + return -ENODEV; + + p = (void __user *)arg; + + switch (cmd) { + case PFRU_IOC_QUERY_CAP: + ret = query_capability(&cap); + if (ret) + return ret; + + if (copy_to_user(p, &cap, sizeof(cap))) + return -EFAULT; + + break; + case PFRU_IOC_SET_REV: + if (copy_from_user(&rev, p, sizeof(unsigned int))) + return -EFAULT; + + if (!pfru_valid_revid(rev)) + return -EINVAL; + + 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 = -ENOTTY; + break; + } + + return ret; +} + +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; + + if (!pfru_dev) + return -ENODEV; + + 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)) { + 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; + else if (!valid_version(buf_ptr, &cap)) + ret = -EINVAL; +unmap: + memunmap(buf_ptr); + + return ret ?: len; +} + +static const struct file_operations acpi_pfru_fops = { + .owner = THIS_MODULE, + .write = pfru_write, + .unlocked_ioctl = pfru_ioctl, + .llseek = noop_llseek, +}; + +static struct miscdevice pfru_misc_dev = { + .minor = MISC_DYNAMIC_MINOR, + .name = "pfru", + .nodename = "acpi_pfru", + .fops = &acpi_pfru_fops, +}; + +static int acpi_pfru_remove(struct platform_device *pdev) +{ + return 0; +} + +static int acpi_pfru_probe(struct platform_device *pdev) +{ + acpi_handle handle; + int ret; + + /* Only one instance is allowed. */ + if (pfru_dev) + 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")) { + dev_dbg(&pdev->dev, "Missing _DSM\n"); + ret = -ENODEV; + 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, +}; + +static int __init pfru_init(void) +{ + int ret; + + ret = misc_register(&pfru_misc_dev); + if (ret) + return ret; + + return platform_driver_register(&acpi_pfru_driver); +} + +static void __exit pfru_exit(void) +{ + platform_driver_unregister(&acpi_pfru_driver); + misc_deregister(&pfru_misc_dev); + kfree(pfru_dev); + pfru_dev = NULL; +} + +module_init(pfru_init); +module_exit(pfru_exit); + +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..127fc38638cb --- /dev/null +++ b/include/uapi/linux/pfru.h @@ -0,0 +1,102 @@ +/* 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) +#define PFRU_IOC_QUERY_CAP _IOR(PFRU_MAGIC, 0x05, struct pfru_update_cap_info) + +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 Sat Oct 16 10:44:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Yu X-Patchwork-Id: 12563573 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 66031C433F5 for ; Sat, 16 Oct 2021 10:39:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4216661181 for ; Sat, 16 Oct 2021 10:39:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236835AbhJPKlh (ORCPT ); Sat, 16 Oct 2021 06:41:37 -0400 Received: from mga04.intel.com ([192.55.52.120]:31396 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231331AbhJPKlg (ORCPT ); Sat, 16 Oct 2021 06:41:36 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10138"; a="226814724" X-IronPort-AV: E=Sophos;i="5.85,378,1624345200"; d="scan'208";a="226814724" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Oct 2021 03:39:28 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,378,1624345200"; d="scan'208";a="628046375" Received: from chenyu-desktop.sh.intel.com ([10.239.158.176]) by fmsmga001.fm.intel.com with ESMTP; 16 Oct 2021 03:39:25 -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 , Chen Yu Subject: [PATCH v4 3/4] drivers/acpi: Introduce Platform Firmware Runtime Update Telemetry Date: Sat, 16 Oct 2021 18:44:31 +0800 Message-Id: <838245e376c7e6fd0fe1ef55d004ed53763846a2.1634310710.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(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. Also add the ABI documentation. 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 Reported-by: kernel test robot --- v4: Remove the telemetry kernel Kconfig and combine it with pfru (Rafael J. Wysocki) Remove redundant parens. (Rafael J. Wysocki) 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/pfru_update.c | 380 +++++++++++++++++++++++++++++++- include/uapi/linux/pfru.h | 43 ++++ 2 files changed, 421 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/pfru/pfru_update.c b/drivers/acpi/pfru/pfru_update.c index f57a39e79808..fe5b1bf0aeb3 100644 --- a/drivers/acpi/pfru/pfru_update.c +++ b/drivers/acpi/pfru/pfru_update.c @@ -55,6 +55,27 @@ enum update_index { UPDATE_NR_IDX, }; +enum log_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, + LOG_NR_IDX, +}; + +struct pfru_log_device { + struct device *dev; + guid_t uuid; + struct pfru_log_info info; +}; + struct pfru_device { guid_t uuid, code_uuid, drv_uuid; int rev_id; @@ -62,6 +83,299 @@ struct pfru_device { }; static struct pfru_device *pfru_dev; +static struct pfru_log_device *pfru_log_dev; + +static int get_pfru_log_data_info(struct pfru_log_data_info *data_info, + int log_type) +{ + union acpi_object *out_obj, in_obj, in_buf; + acpi_handle handle; + int ret = -EINVAL; + + handle = ACPI_HANDLE(pfru_log_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, &pfru_log_dev->uuid, + pfru_log_dev->info.log_revid, FUNC_GET_DATA, + &in_obj, ACPI_TYPE_PACKAGE); + if (!out_obj) + return ret; + + if (out_obj->package.count < LOG_NR_IDX) + goto free_acpi_buffer; + + if (out_obj->package.elements[LOG_STATUS_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + data_info->status = out_obj->package.elements[LOG_STATUS_IDX].integer.value; + + if (out_obj->package.elements[LOG_EXT_STATUS_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + data_info->ext_status = + out_obj->package.elements[LOG_EXT_STATUS_IDX].integer.value; + + if (out_obj->package.elements[LOG_MAX_SZ_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + data_info->max_data_size = + out_obj->package.elements[LOG_MAX_SZ_IDX].integer.value; + + if (out_obj->package.elements[LOG_CHUNK1_LO_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + data_info->chunk1_addr_lo = + out_obj->package.elements[LOG_CHUNK1_LO_IDX].integer.value; + + if (out_obj->package.elements[LOG_CHUNK1_HI_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + data_info->chunk1_addr_hi = + out_obj->package.elements[LOG_CHUNK1_HI_IDX].integer.value; + + if (out_obj->package.elements[LOG_CHUNK1_SZ_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + data_info->chunk1_size = + out_obj->package.elements[LOG_CHUNK1_SZ_IDX].integer.value; + + if (out_obj->package.elements[LOG_CHUNK2_LO_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + data_info->chunk2_addr_lo = + out_obj->package.elements[LOG_CHUNK2_LO_IDX].integer.value; + + if (out_obj->package.elements[LOG_CHUNK2_HI_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + data_info->chunk2_addr_hi = + out_obj->package.elements[LOG_CHUNK2_HI_IDX].integer.value; + + if (out_obj->package.elements[LOG_CHUNK2_SZ_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + data_info->chunk2_size = + out_obj->package.elements[LOG_CHUNK2_SZ_IDX].integer.value; + + if (out_obj->package.elements[LOG_ROLLOVER_CNT_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + data_info->rollover_cnt = + out_obj->package.elements[LOG_ROLLOVER_CNT_IDX].integer.value; + + if (out_obj->package.elements[LOG_RESET_CNT_IDX].type != ACPI_TYPE_INTEGER) + goto free_acpi_buffer; + + data_info->reset_cnt = + out_obj->package.elements[LOG_RESET_CNT_IDX].integer.value; + + 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(pfru_log_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, &pfru_log_dev->uuid, + pfru_log_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) + goto free_acpi_buffer; + + obj = &out_obj->package.elements[1]; + status = obj->integer.value; + if (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(pfru_log_dev->dev); + out_obj = acpi_evaluate_dsm_typed(handle, &pfru_log_dev->uuid, + pfru_log_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) + 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) + 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; +} + +long pfru_log_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + struct pfru_log_data_info data_info; + struct pfru_log_info info; + void __user *p; + int ret = 0; + + if (!pfru_log_dev) + return -ENODEV; + + 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)) + pfru_log_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; + pfru_log_dev->info.log_level = info.log_level; + } + + if (valid_log_type(info.log_type)) + pfru_log_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 = pfru_log_dev->info.log_type; + info.log_revid = pfru_log_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_log_data_info(&data_info, pfru_log_dev->info.log_type); + if (ret) + return ret; + + if (copy_to_user(p, &data_info, sizeof(struct pfru_log_data_info))) + ret = -EFAULT; + + break; + default: + ret = -ENOTTY; + break; + } + return ret; +} + +ssize_t pfru_log_read(struct file *filp, char __user *ubuf, + size_t size, loff_t *off) +{ + struct pfru_log_data_info info; + phys_addr_t base_addr; + int buf_size, ret; + char *buf_ptr; + + if (!pfru_log_dev) + return -ENODEV; + + if (*off < 0) + return -EINVAL; + + ret = get_pfru_log_data_info(&info, pfru_log_dev->info.log_type); + if (ret) + return ret; + + base_addr = (phys_addr_t)(info.chunk2_addr_lo | (info.chunk2_addr_hi << 32)); + /* pfru update has not been launched yet.*/ + if (!base_addr) + 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); + if (copy_to_user(ubuf, buf_ptr + *off, size)) + ret = -EFAULT; + else + ret = 0; + + memunmap(buf_ptr); + + return ret ? ret : size; +} static int query_capability(struct pfru_update_cap_info *cap) { @@ -406,7 +720,7 @@ static long pfru_ioctl(struct file *file, unsigned int cmd, unsigned long arg) ret = start_acpi_update(START_STAGE_ACTIVATE); break; default: - ret = -ENOTTY; + ret = pfru_log_ioctl(file, cmd, arg); break; } @@ -467,6 +781,7 @@ static ssize_t pfru_write(struct file *file, const char __user *buf, static const struct file_operations acpi_pfru_fops = { .owner = THIS_MODULE, .write = pfru_write, + .read = pfru_log_read, .unlocked_ioctl = pfru_ioctl, .llseek = noop_llseek, }; @@ -478,6 +793,44 @@ static struct miscdevice pfru_misc_dev = { .fops = &acpi_pfru_fops, }; +static int acpi_pfru_log_remove(struct platform_device *pdev) +{ + return 0; +} + +static int acpi_pfru_log_probe(struct platform_device *pdev) +{ + acpi_handle handle; + int ret; + + /* One instance is expected. */ + if (pfru_log_dev) + return 0; + + pfru_log_dev = kzalloc(sizeof(*pfru_log_dev), GFP_KERNEL); + if (!pfru_log_dev) + return -ENOMEM; + + ret = guid_parse(PFRU_LOG_UUID, &pfru_log_dev->uuid); + if (ret) + goto out; + + pfru_log_dev->info.log_revid = 1; + pfru_log_dev->dev = &pdev->dev; + handle = ACPI_HANDLE(pfru_log_dev->dev); + if (!acpi_has_method(handle, "_DSM")) { + ret = -ENODEV; + goto out; + } + + return 0; +out: + kfree(pfru_log_dev); + pfru_log_dev = NULL; + + return ret; +} + static int acpi_pfru_remove(struct platform_device *pdev) { return 0; @@ -526,6 +879,21 @@ static int acpi_pfru_probe(struct platform_device *pdev) return ret; } +static const struct acpi_device_id acpi_pfru_log_ids[] = { + {"INTC1081", 0}, + {} +}; +MODULE_DEVICE_TABLE(acpi, acpi_pfru_log_ids); + +static struct platform_driver acpi_pfru_log_driver = { + .driver = { + .name = "pfru_log", + .acpi_match_table = acpi_pfru_log_ids, + }, + .probe = acpi_pfru_log_probe, + .remove = acpi_pfru_log_remove, +}; + static const struct acpi_device_id acpi_pfru_ids[] = { {"INTC1080", 0}, {} @@ -549,7 +917,11 @@ static int __init pfru_init(void) if (ret) return ret; - return platform_driver_register(&acpi_pfru_driver); + ret = platform_driver_register(&acpi_pfru_driver); + if (ret) + misc_deregister(&pfru_misc_dev); + + return platform_driver_register(&acpi_pfru_log_driver); } static void __exit pfru_exit(void) @@ -558,6 +930,10 @@ static void __exit pfru_exit(void) misc_deregister(&pfru_misc_dev); kfree(pfru_dev); pfru_dev = NULL; + + platform_driver_unregister(&acpi_pfru_log_driver); + kfree(pfru_log_dev); + pfru_log_dev = NULL; } module_init(pfru_init); diff --git a/include/uapi/linux/pfru.h b/include/uapi/linux/pfru.h index 127fc38638cb..9ab74d9cd21a 100644 --- a/include/uapi/linux/pfru.h +++ b/include/uapi/linux/pfru.h @@ -99,4 +99,47 @@ struct pfru_updated_result { __u64 high_exec_time; }; +#define PFRU_LOG_UUID "75191659-8178-4D9D-B88F-AC5E5E93E8BF" + +/* Telemetry structures. */ +struct pfru_log_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_log_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_log_info) +#define PFRU_LOG_IOC_GET_INFO _IOR(PFRU_MAGIC, 0x06, struct pfru_log_info) +#define PFRU_LOG_IOC_GET_DATA_INFO _IOR(PFRU_MAGIC, 0x07, struct pfru_log_data_info) + #endif /* __PFRU_H__ */ From patchwork Sat Oct 16 10:47:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Yu X-Patchwork-Id: 12563575 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 EFE75C433F5 for ; Sat, 16 Oct 2021 10:42:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CB6B060EDF for ; Sat, 16 Oct 2021 10:42:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234980AbhJPKo5 (ORCPT ); Sat, 16 Oct 2021 06:44:57 -0400 Received: from mga06.intel.com ([134.134.136.31]:38326 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231240AbhJPKo5 (ORCPT ); Sat, 16 Oct 2021 06:44:57 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10138"; a="288902175" X-IronPort-AV: E=Sophos;i="5.85,378,1624345200"; d="scan'208";a="288902175" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Oct 2021 03:42:49 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,378,1624345200"; d="scan'208";a="628046687" Received: from chenyu-desktop.sh.intel.com ([10.239.158.176]) by fmsmga001.fm.intel.com with ESMTP; 16 Oct 2021 03:42:45 -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 , Robert Moore , devel@acpica.org, Chen Yu Subject: [PATCH v4 4/4] tools: Introduce power/acpi/pfru/pfru Date: Sat, 16 Oct 2021 18:47:33 +0800 Message-Id: <211f0a7ac4168e37e4f9ca4db0ba587d937970d1.1634310710.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 Introduce a user space tool to make use of the interface exposed by Platform Firmware Runtime Update and Telemetry drivers. The users can use this tool to do firmware code injection, driver update and to retrieve the telemetry data. Signed-off-by: Chen Yu --- v4: Move the tool from tools/testings to tools/power/acpi. (Rafael J. Wysocki) Add corresponding man page for this tool. (Rafael J. Wysocki) 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/power/acpi/pfru/Makefile | 25 +++ tools/power/acpi/pfru/pfru.8 | 137 ++++++++++++++ tools/power/acpi/pfru/pfru.c | 336 +++++++++++++++++++++++++++++++++ 4 files changed, 505 insertions(+) create mode 100644 tools/power/acpi/pfru/Makefile create mode 100644 tools/power/acpi/pfru/pfru.8 create mode 100644 tools/power/acpi/pfru/pfru.c diff --git a/include/uapi/linux/pfru.h b/include/uapi/linux/pfru.h index 9ab74d9cd21a..e7b3e17ef38c 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/power/acpi/pfru/Makefile b/tools/power/acpi/pfru/Makefile new file mode 100644 index 000000000000..54bf913b2a09 --- /dev/null +++ b/tools/power/acpi/pfru/Makefile @@ -0,0 +1,25 @@ +# SPDX-License-Identifier: GPL-2.0+ + +CFLAGS += -Wall -O2 +CFLAGS += -DPFRU_HEADER='"../../../../include/uapi/linux/pfru.h"' +BUILD_OUTPUT := $(CURDIR) + +ifeq ("$(origin O)", "command line") + BUILD_OUTPUT := $(O) +endif + +pfru : pfru.c + +%: %.c + @mkdir -p $(BUILD_OUTPUT) + $(CC) $(CFLAGS) $< -o $(BUILD_OUTPUT)/$@ $(LDFLAGS) -luuid + +.PHONY : clean +clean : + @rm -f $(BUILD_OUTPUT)/pfru + +install : pfru + install -d $(DESTDIR)$(PREFIX)/bin + install $(BUILD_OUTPUT)/pfru $(DESTDIR)$(PREFIX)/bin/pfru + install -d $(DESTDIR)$(PREFIX)/share/man/man8 + install -m 644 pfru.8 $(DESTDIR)$(PREFIX)/share/man/man8 diff --git a/tools/power/acpi/pfru/pfru.8 b/tools/power/acpi/pfru/pfru.8 new file mode 100644 index 000000000000..2322b59ebada --- /dev/null +++ b/tools/power/acpi/pfru/pfru.8 @@ -0,0 +1,137 @@ +.TH "PFRU" "8" "October 2021" "pfru 1.0" "" +.hy +.SH Name +.PP +pfru \- Platform Firmware Runtime Update tool +.SH SYNOPSIS +.PP +\f[B]pfru\f[R] [\f[I]Options\f[R]] +.SH DESCRIPTION +.PP +The PFRU(Platform Firmware Runtime Update) kernel interface is designed +to +.PD 0 +.P +.PD +interact with the platform firmware interface defined in the +.PD 0 +.P +.PD +Management Mode Firmware Runtime +Update (https://uefi.org/sites/default/files/resources/Intel_MM_OS_Interface_Spec_Rev100.pdf) +.PD 0 +.P +.PD +\f[B]pfru\f[R] is the tool to interact with the kernel interface. +.PD 0 +.P +.PD +.SH OPTIONS +.TP +.B \f[B]\-h\f[R], \f[B]\-\-help\f[R] +Display helper information. +.TP +.B \f[B]\-l\f[R], \f[B]\-\-load\f[R] +Load the capsule file into the system. +To be more specific, the capsule file will be copied to the +communication buffer. +.TP +.B \f[B]\-s\f[R], \f[B]\-\-stage\f[R] +Stage the capsule image from communication buffer into Management Mode +and perform authentication. +.TP +.B \f[B]\-a\f[R], \f[B]\-\-activate\f[R] +Activate a previous staged capsule image. +.TP +.B \f[B]\-u\f[R], \f[B]\-\-update\f[R] +Perform both stage and activation actions. +.TP +.B \f[B]\-q\f[R], \f[B]\-\-query\f[R] +Query the update capability. +.TP +.B \f[B]\-d\f[R], \f[B]\-\-setrev\f[R] +Set the revision ID of code injection/driver update. +.TP +.B \f[B]\-D\f[R], \f[B]\-\-setrevlog\f[R] +Set the revision ID of telemetry. +.TP +.B \f[B]\-G\f[R], \f[B]\-\-getloginfo\f[R] +Get telemetry log information and print it out. +.TP +.B \f[B]\-T\f[R], \f[B]\-\-type\f[R] +Set the telemetry log data type. +.TP +.B \f[B]\-L\f[R], \f[B]\-\-level\f[R] +Set the telemetry log level. +.TP +.B \f[B]\-R\f[R], \f[B]\-\-read\f[R] +Read all the telemetry data and print it out. +.SH EXAMPLES +.PP +\f[B]pfru \-G\f[R] +.PP +log_level:4 +.PD 0 +.P +.PD +log_type:0 +.PD 0 +.P +.PD +log_revid:2 +.PD 0 +.P +.PD +max_data_size:65536 +.PD 0 +.P +.PD +chunk1_size:0 +.PD 0 +.P +.PD +chunk2_size:1401 +.PD 0 +.P +.PD +rollover_cnt:0 +.PD 0 +.P +.PD +reset_cnt:4 +.PP +\f[B]pfru \-q\f[R] +.PP +code injection image type:794bf8b2\-6e7b\-454e\-885f\-3fb9bb185402 +.PD 0 +.P +.PD +fw_version:0 +.PD 0 +.P +.PD +code_rt_version:1 +.PD 0 +.P +.PD +driver update image type:0e5f0b14\-f849\-7945\-ad81\-bc7b6d2bb245 +.PD 0 +.P +.PD +drv_rt_version:0 +.PD 0 +.P +.PD +drv_svn:0 +.PD 0 +.P +.PD +platform id:39214663\-b1a8\-4eaa\-9024\-f2bb53ea4723 +.PD 0 +.P +.PD +oem id:a36db54f\-ea2a\-e14e\-b7c4\-b5780e51ba3d +.PP +\f[B]pfru \-l yours.cap \-u \-T 1 \-L 4\f[R] +.SH AUTHORS +Chen Yu. diff --git a/tools/power/acpi/pfru/pfru.c b/tools/power/acpi/pfru/pfru.c new file mode 100644 index 000000000000..a65f895d856e --- /dev/null +++ b/tools/power/acpi/pfru/pfru.c @@ -0,0 +1,336 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Platform Firmware Runtime Update tool to do Management + * Mode code injection/driver update and telemetry retrieval. + */ +#define _GNU_SOURCE +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include PFRU_HEADER + +#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_capsule; + struct pfru_log_data_info data_info; + struct pfru_log_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 tool as root - Exiting.\n"); + return 1; + } + + parse_options(argc, argv); + + fd_update = open("/dev/acpi_pfru", O_RDWR); + if (fd_update < 0) { + printf("PFRU device not supported - Quit...\n"); + return 1; + } + + if (query_cap) { + ret = ioctl(fd_update, PFRU_IOC_QUERY_CAP, &cap); + if (ret) { + perror("Query Update Capability info failed."); + return 1; + } + + print_cap(&cap); + } + + if (log_getinfo) { + ret = ioctl(fd_update, PFRU_LOG_IOC_GET_DATA_INFO, &data_info); + if (ret) { + perror("Get telemetry data info failed."); + return 1; + } + + ret = ioctl(fd_update, PFRU_LOG_IOC_GET_INFO, &info); + if (ret) { + perror("Get telemetry 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_update, PFRU_LOG_IOC_SET_INFO, &info); + if (ret) { + perror("Log information set failed.(log_level, log_type, log_revid)"); + return 1; + } + + 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 (log_read) { + log_buf = malloc(MAX_LOG_SIZE + 1); + if (!log_buf) { + perror("log_buf allocate failed."); + return 1; + } + + ret = read(fd_update, 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; +}