From mboxrd@z Thu Jan 1 00:00:00 1970 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 A6846C433F5 for ; Fri, 1 Oct 2021 11:19:41 +0000 (UTC) Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E6B9561A6E for ; Fri, 1 Oct 2021 11:19:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org E6B9561A6E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.denx.de Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 44A158328E; Fri, 1 Oct 2021 13:19:28 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.b="Im0Npn3t"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 21330831B2; Fri, 1 Oct 2021 13:19:23 +0200 (CEST) Received: from mail-pg1-x532.google.com (mail-pg1-x532.google.com [IPv6:2607:f8b0:4864:20::532]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 8E661815B7 for ; Fri, 1 Oct 2021 13:19:14 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=masahisa.kojima@linaro.org Received: by mail-pg1-x532.google.com with SMTP id 75so9121490pga.3 for ; Fri, 01 Oct 2021 04:19:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=yauZ0OcnAFWdKnEMOQcePg1XdrLlnVzrXQt4wOdhDMQ=; b=Im0Npn3tMgT/gz9X46JrbFTfQBIeN8dBeJqVgI3huhR8dh1F0NwzOs3oGtvL0qHf6U 0c9Swt8zS2fjkTVfUDWJdXdYBAdQaPNSZ12Y8Of6KAdfUgHhZY2vA0PM7HMx7yCTIzr2 hfWHbiCsCrYSwx9AmIpM7qnrvve2taa4RauQmvTegEcZNS3qp8dvbOO+n4+2gaf4gIzb VCnFhwZloOjY26pZrORQdS4X1+EGQuCz6AYoCPMZoa3eBb9Slhk42Iv8RLOttQMZ3Emf YRInjtZVaOYX+1KUU5pdB2771Gk0U/lnoIXdNfPj4YleOi0zpUEh7FQF1Y3z2JwmY/ft L6wg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=yauZ0OcnAFWdKnEMOQcePg1XdrLlnVzrXQt4wOdhDMQ=; b=7MW1TSGsHWSRotn5TS7SGIzQRtuJNyRxWsOknBFd4F3jguG/Td04xfzSjHCV9IxGk/ KfgYn1A005YcxH2z1n80u5tXXvsUwnzt7HWK/eFmAb/VvV15mvSuZgSxF+xt2x8W9cce m+M491J7/ZZurcT/kabRq6etA9oIVr8XbX2ehtoXOqJMsgjfQ9gCTzqrKfS1vf79I5qa oqfIMb8R+12RO0vz6dMCh2B56INIuPt5R/IxkMfsnBq+ynObnEOaS1jCN5Bty3oiCPcT aLoc7yKJxXnjvP3/l0lmXsW/JCJM2NGcHS3kp1x38Z2FA2OARlDDkJTcQwDC8NZMG7Rl DePg== X-Gm-Message-State: AOAM532LMq7WAZFdmpC1iwGWad5DtQ0eAjLhivzvthTuf823Hh7rAT+s tGYhAVSVn/BjB5vJVAHnZ6hQj2DH2NNEGg== X-Google-Smtp-Source: ABdhPJyGo+xv3gygBLb1jLLegDv345ulp0GjShZdL53X5UjvqCLC10ddgk3onItQx2Gk57mlU/msRg== X-Received: by 2002:aa7:9815:0:b0:43d:7dd:8c99 with SMTP id e21-20020aa79815000000b0043d07dd8c99mr9784566pfl.24.1633087152648; Fri, 01 Oct 2021 04:19:12 -0700 (PDT) Received: from localhost.localdomain ([2400:2411:502:a100:82fa:5bff:fe4b:26b1]) by smtp.gmail.com with ESMTPSA id w12sm5689829pjf.27.2021.10.01.04.19.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Oct 2021 04:19:12 -0700 (PDT) From: Masahisa Kojima To: u-boot@lists.denx.de Cc: Heinrich Schuchardt , Ilias Apalodimas , Masahisa Kojima , Alexander Graf , Simon Glass Subject: [PATCH v3 2/3] efi_loader: add UEFI GPT measurement Date: Fri, 1 Oct 2021 20:18:43 +0900 Message-Id: <20211001111844.7422-3-masahisa.kojima@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211001111844.7422-1-masahisa.kojima@linaro.org> References: <20211001111844.7422-1-masahisa.kojima@linaro.org> X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.2 at phobos.denx.de X-Virus-Status: Clean This commit adds the UEFI GPT disk partition topology measurement required in TCG PC Client PFP Spec. Signed-off-by: Masahisa Kojima --- Changes in v3: - EV_EFI_GPT_EVENT is measured before EV_SEPARATOR, same as other PCRs - use PTR_ARRAY instead of ARRAY - create sub-function of allocating io_aligned buffer - move search_gpt_dp_node() into efi_device_path.c include/blk.h | 3 + include/efi_loader.h | 3 +- include/efi_tcg2.h | 12 +++ lib/efi_loader/efi_boottime.c | 2 +- lib/efi_loader/efi_device_path.c | 27 +++++ lib/efi_loader/efi_tcg2.c | 163 ++++++++++++++++++++++++++++++- 6 files changed, 207 insertions(+), 3 deletions(-) diff --git a/include/blk.h b/include/blk.h index 19bab081c2..f0cc7ca1a2 100644 --- a/include/blk.h +++ b/include/blk.h @@ -45,6 +45,9 @@ enum if_type { #define BLK_PRD_SIZE 20 #define BLK_REV_SIZE 8 +#define PART_FORMAT_PCAT 0x1 +#define PART_FORMAT_GPT 0x2 + /* * Identifies the partition table type (ie. MBR vs GPT GUID) signature */ diff --git a/include/efi_loader.h b/include/efi_loader.h index 13f0c24058..c557e8bee6 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -503,7 +503,7 @@ efi_status_t efi_init_variables(void); void efi_variables_boot_exit_notify(void); efi_status_t efi_tcg2_notify_exit_boot_services_failed(void); /* Measure efi application invocation */ -efi_status_t efi_tcg2_measure_efi_app_invocation(void); +efi_status_t efi_tcg2_measure_efi_app_invocation(struct efi_loaded_image_obj *handle); /* Measure efi application exit */ efi_status_t efi_tcg2_measure_efi_app_exit(void); /* Called by bootefi to initialize root node */ @@ -845,6 +845,7 @@ struct efi_device_path *efi_dp_from_lo(struct efi_load_option *lo, efi_uintn_t *size, efi_guid_t guid); struct efi_device_path *efi_dp_concat(const struct efi_device_path *dp1, const struct efi_device_path *dp2); +struct efi_device_path *search_gpt_dp_node(struct efi_device_path *device_path); efi_status_t efi_deserialize_load_option(struct efi_load_option *lo, u8 *data, efi_uintn_t *size); unsigned long efi_serialize_load_option(struct efi_load_option *lo, u8 **data); diff --git a/include/efi_tcg2.h b/include/efi_tcg2.h index ca66695b39..50a59f9263 100644 --- a/include/efi_tcg2.h +++ b/include/efi_tcg2.h @@ -225,6 +225,18 @@ struct smbios_handoff_table_pointers2 { struct efi_configuration_table table_entry[]; } __packed; +/** + * struct tdUEFI_GPT_DATA - event log structure of industry standard tables + * @uefi_partition_header: gpt partition header + * @number_of_partitions: the number of partition + * @partitions: partition entries + */ +struct efi_gpt_data { + gpt_header uefi_partition_header; + u64 number_of_partitions; + gpt_entry partitions[]; +} __packed; + struct efi_tcg2_protocol { efi_status_t (EFIAPI * get_capability)(struct efi_tcg2_protocol *this, struct efi_tcg2_boot_service_capability *capability); diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index 701e2212c8..bf5661e1ee 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -3003,7 +3003,7 @@ efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, if (IS_ENABLED(CONFIG_EFI_TCG2_PROTOCOL)) { if (image_obj->image_type == IMAGE_SUBSYSTEM_EFI_APPLICATION) { - ret = efi_tcg2_measure_efi_app_invocation(); + ret = efi_tcg2_measure_efi_app_invocation(image_obj); if (ret != EFI_SUCCESS) { log_warning("tcg2 measurement fails(0x%lx)\n", ret); diff --git a/lib/efi_loader/efi_device_path.c b/lib/efi_loader/efi_device_path.c index cbdb466da4..6aec64f373 100644 --- a/lib/efi_loader/efi_device_path.c +++ b/lib/efi_loader/efi_device_path.c @@ -1294,3 +1294,30 @@ efi_device_path *efi_dp_from_lo(struct efi_load_option *lo, return NULL; } + +/** + * search_gpt_dp_node() - search gpt device path node + * + * @device_path: device path + * + * Return: pointer to the gpt device path node + */ +struct efi_device_path *search_gpt_dp_node(struct efi_device_path *device_path) +{ + struct efi_device_path *dp = device_path; + + while (dp) { + if (dp->type == DEVICE_PATH_TYPE_MEDIA_DEVICE && + dp->sub_type == DEVICE_PATH_SUB_TYPE_HARD_DRIVE_PATH) { + struct efi_device_path_hard_drive_path *hd_dp = + (struct efi_device_path_hard_drive_path *)dp; + + if (hd_dp->partmap_type == PART_FORMAT_GPT && + hd_dp->signature_type == SIG_TYPE_GUID) + return dp; + } + dp = efi_dp_next(dp); + } + + return NULL; +} diff --git a/lib/efi_loader/efi_tcg2.c b/lib/efi_loader/efi_tcg2.c index f14d4d6da1..28e0362bf2 100644 --- a/lib/efi_loader/efi_tcg2.c +++ b/lib/efi_loader/efi_tcg2.c @@ -1531,12 +1531,169 @@ static void *find_smbios_table(void) return NULL; } +static void *allocate_io_aligned_buf(void **buf, u32 size, u32 io_align) +{ + if (!buf) + return NULL; + + *buf = calloc(1, size); + if (!*buf) + return NULL; + + return (void *)PTR_ALIGN((uintptr_t)*buf, io_align); +} + +/** + * tcg2_measure_gpt_table() - measure gpt table + * + * @dev: TPM device + * @loaded_image: handle to the loaded image + * + * Return: status code + */ +static efi_status_t +tcg2_measure_gpt_data(struct udevice *dev, + struct efi_loaded_image_obj *loaded_image) +{ + efi_status_t ret; + efi_handle_t handle; + struct efi_handler *dp_handler; + struct efi_device_path *orig_device_path; + struct efi_device_path *device_path; + struct efi_device_path *dp; + struct efi_block_io *block_io; + struct efi_gpt_data *event = NULL; + efi_guid_t null_guid = NULL_GUID; + void *orig_gpt_h = NULL; + void *orig_gpt_e = NULL; + gpt_header *gpt_h = NULL; + gpt_entry *entry = NULL; + gpt_entry *gpt_e; + u32 num_of_valid_entry = 0; + u32 event_size; + u32 i; + u32 total_gpt_entry_size; + + ret = efi_search_protocol(&loaded_image->header, + &efi_guid_loaded_image_device_path, + &dp_handler); + if (ret != EFI_SUCCESS) + return ret; + + orig_device_path = dp_handler->protocol_interface; + device_path = efi_dp_dup(orig_device_path); + if (!device_path) + return EFI_OUT_OF_RESOURCES; + + dp = search_gpt_dp_node(device_path); + if (!dp) { + /* no GPT device path node found, skip GPT measurement */ + ret = EFI_SUCCESS; + goto out1; + } + + /* read GPT header */ + dp->type = DEVICE_PATH_TYPE_END; + dp->sub_type = DEVICE_PATH_SUB_TYPE_END; + dp = device_path; + ret = EFI_CALL(systab.boottime->locate_device_path(&efi_block_io_guid, + &dp, &handle)); + if (ret != EFI_SUCCESS) + goto out1; + + ret = EFI_CALL(efi_handle_protocol(handle, + &efi_block_io_guid, (void **)&block_io)); + if (ret != EFI_SUCCESS) + goto out1; + + gpt_h = allocate_io_aligned_buf(&orig_gpt_h, + block_io->media->block_size + + block_io->media->io_align, + block_io->media->io_align); + if (!orig_gpt_h || !gpt_h) { + ret = EFI_OUT_OF_RESOURCES; + goto out2; + } + + ret = block_io->read_blocks(block_io, block_io->media->media_id, 1, + block_io->media->block_size, gpt_h); + if (ret != EFI_SUCCESS) + goto out2; + + /* read GPT entry */ + total_gpt_entry_size = gpt_h->num_partition_entries * + gpt_h->sizeof_partition_entry; + entry = allocate_io_aligned_buf(&orig_gpt_e, + total_gpt_entry_size + + block_io->media->io_align, + block_io->media->io_align); + if (!orig_gpt_e || !entry) { + ret = EFI_OUT_OF_RESOURCES; + goto out2; + } + + ret = block_io->read_blocks(block_io, block_io->media->media_id, + gpt_h->partition_entry_lba, + total_gpt_entry_size, entry); + if (ret != EFI_SUCCESS) + goto out2; + + /* count valid GPT entry */ + gpt_e = entry; + for (i = 0; i < gpt_h->num_partition_entries; i++) { + if (guidcmp(&null_guid, &gpt_e->partition_type_guid)) + num_of_valid_entry++; + + gpt_e = (gpt_entry *)((u8 *)gpt_e + gpt_h->sizeof_partition_entry); + } + + /* prepare event data for measurement */ + event_size = sizeof(struct efi_gpt_data) + + (num_of_valid_entry * gpt_h->sizeof_partition_entry); + event = calloc(1, event_size); + if (!event) { + ret = EFI_OUT_OF_RESOURCES; + goto out2; + } + memcpy(event, gpt_h, sizeof(gpt_header)); + put_unaligned_le64(num_of_valid_entry, &event->number_of_partitions); + + /* copy valid GPT entry */ + gpt_e = entry; + num_of_valid_entry = 0; + for (i = 0; i < gpt_h->num_partition_entries; i++) { + if (guidcmp(&null_guid, &gpt_e->partition_type_guid)) { + memcpy((u8 *)event->partitions + + (num_of_valid_entry * gpt_h->sizeof_partition_entry), + gpt_e, gpt_h->sizeof_partition_entry); + num_of_valid_entry++; + } + + gpt_e = (gpt_entry *)((u8 *)gpt_e + gpt_h->sizeof_partition_entry); + } + + ret = tcg2_measure_event(dev, 5, EV_EFI_GPT_EVENT, event_size, (u8 *)event); + if (ret != EFI_SUCCESS) + goto out2; + +out2: + EFI_CALL(efi_close_protocol((efi_handle_t)block_io, &efi_block_io_guid, + NULL, NULL)); + free(orig_gpt_h); + free(orig_gpt_e); + free(event); +out1: + efi_free_pool(device_path); + + return ret; +} + /** * efi_tcg2_measure_efi_app_invocation() - measure efi app invocation * * Return: status code */ -efi_status_t efi_tcg2_measure_efi_app_invocation(void) +efi_status_t efi_tcg2_measure_efi_app_invocation(struct efi_loaded_image_obj *handle) { efi_status_t ret; u32 pcr_index; @@ -1568,6 +1725,10 @@ efi_status_t efi_tcg2_measure_efi_app_invocation(void) goto out; } + ret = tcg2_measure_gpt_data(dev, handle); + if (ret != EFI_SUCCESS) + goto out; + for (pcr_index = 0; pcr_index <= 7; pcr_index++) { ret = tcg2_measure_event(dev, pcr_index, EV_SEPARATOR, sizeof(event), (u8 *)&event); -- 2.17.1