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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 30EFDCCA47C for ; Fri, 15 Jul 2022 14:27:08 +0000 (UTC) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 62AF88356F; Fri, 15 Jul 2022 16:25:55 +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="FIQKsyo9"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 8F37A8171B; Fri, 15 Jul 2022 16:25:34 +0200 (CEST) Received: from mail-pj1-x1033.google.com (mail-pj1-x1033.google.com [IPv6:2607:f8b0:4864:20::1033]) (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 C65C581F69 for ; Fri, 15 Jul 2022 16:25:23 +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-pj1-x1033.google.com with SMTP id y14-20020a17090a644e00b001ef775f7118so11718539pjm.2 for ; Fri, 15 Jul 2022 07:25:23 -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=lI9wobL/7MV8jW7HEsy1CpL2JfpMd/jkFVI98+juEIQ=; b=FIQKsyo9ZJVMCnbZG0VnsOeCTsaOxnWt1tEN/ppUdoxxQvAh0Soemh4Ti890ODvP05 VI1HAua2W9KfFoYC6gOePbPQi9/9JS+zHfFhwmMlbZxl3tGGyf6L0cwt++Va6YglKXUr 6UPCNf1i7c8nNk+grt4b3zdZZ/1fOv57+93q+YQ7UfJ0WyFjjHheW+Awl84Sp9ENlHqU 9531aFGwdltboOykNVxkopLdBwvhb7HIUJMZMp9Eo9lc03z1ycm7Ofcuub/lAcT2CB8a nPoW2QHLFKbFMpRo76biLFWtA/aN9vhhwTcSKWEdJ0h6mWCYfKxf+reCBjOOd9Qv3qJT 3qTQ== 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=lI9wobL/7MV8jW7HEsy1CpL2JfpMd/jkFVI98+juEIQ=; b=dkyIBabqzljoTRsHR+B/rk4ZWmGtYd6nMpEKQL9ubqv2FfjyDsv2aycP9AyHqFDQRU StYMot8m9h1oyZdaXN0db/ZmNYWhRyFNTfoouFa9/En+nt+5oAtbr5ViOa2RVOWMXQzY PXbk64vS+TEfHBtYJ6IGPV8qqRYidlOMxbICyvDAvS63Td5T7WEJruymlAiedM2/fgDW yXj0B+EfwdiV+sy3H7s82rJd9uzuc5HivD82uZ/gT/rratcNTuh6ZZah+tdnTW7oaOzx q+y841HHlEh+8WszrAjxWxfd8C3/shQNuz2qPjNIkq6dF6kVzlZC6vH4ZteKg9M8ovX+ KL/w== X-Gm-Message-State: AJIora+lsilsFZnXVRFJrdTNAkADaU4GG3T7VSkGLr1RbQUG5/HmpUYM FsUfeSKLe/eeTonyRK9QECybxgANGBPvXA== X-Google-Smtp-Source: AGRyM1tsDULrPfbFlgcfE4XfMdBZ9GLTGqI2AfvvtkSBvhN+dVSlVST1E0ZfhNTG+Cv/cnKQw35RLA== X-Received: by 2002:a17:90b:48c7:b0:1ef:a692:9593 with SMTP id li7-20020a17090b48c700b001efa6929593mr16183692pjb.184.1657895116829; Fri, 15 Jul 2022 07:25:16 -0700 (PDT) Received: from localhost.localdomain ([240d:1a:cf7:5800:82fa:5bff:fe4b:26b1]) by smtp.gmail.com with ESMTPSA id d22-20020aa797b6000000b0051c49fb62b7sm3891174pfq.165.2022.07.15.07.25.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 Jul 2022 07:25:16 -0700 (PDT) From: Masahisa Kojima To: u-boot@lists.denx.de Cc: Heinrich Schuchardt , Ilias Apalodimas , Simon Glass , Takahiro Akashi , Mark Kettenis , Masahisa Kojima Subject: [PATCH 7/9] bootmenu: add removable media entries Date: Fri, 15 Jul 2022 23:27:41 +0900 Message-Id: <20220715142743.30137-8-masahisa.kojima@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220715142743.30137-1-masahisa.kojima@linaro.org> References: <20220715142743.30137-1-masahisa.kojima@linaro.org> X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 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 0.103.6 at phobos.denx.de X-Virus-Status: Clean UEFI specification requires booting from removal media using a architecture-specific default image name such as BOOTAA64.EFI. This commit adds the removable media entries into bootmenu, so that user can select the removable media and boot with default image. The bootmenu automatically enumerates the possible bootable media devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL, add it as new UEFI boot option(BOOT####) and update BootOrder variable. This automatically generated UEFI boot option has the dedicated guid in the optional_data to distinguish it from the UEFI boot option user adds manually. This optional_data is removed when the efi bootmgr loads the selected UEFI boot option. This commit also provides the BOOT#### variable maintenance feature. Depending on the system hardware setup, some devices may not exist at a later system boot, so bootmenu checks the available device in each bootmenu invocation and automatically removes the BOOT#### variable corrensponding to the non-existent media device. Signed-off-by: Masahisa Kojima --- Changes in v9: - update efi_disk_get_device_name() parameter to pass efi_handle_t - add function comment Changes in v8: - function and structure prefix is changed to "eficonfig" Changes in v7: - rename prepare_media_device_entry() to generate_media_device_boot_option() Changes in v6: - optional_data size is changed to 16bytes - check the load option size before comparison - remove guid included in optional_data of auto generated entry when loading Changes in v5: - Return EFI_SUCCESS if there is no BootOrder defined - correctly handle the case if no removable device found - use guid to identify the automatically generated entry by bootmenu cmd/bootmenu.c | 103 +++++++++++++++++++++++++++-- cmd/eficonfig.c | 125 +++++++++++++++++++++++++++++++++++ include/efi_loader.h | 20 ++++++ lib/efi_loader/efi_bootmgr.c | 4 ++ 4 files changed, 247 insertions(+), 5 deletions(-) diff --git a/cmd/bootmenu.c b/cmd/bootmenu.c index 704d36debe..e593345853 100644 --- a/cmd/bootmenu.c +++ b/cmd/bootmenu.c @@ -220,7 +220,90 @@ static int prepare_bootmenu_entry(struct bootmenu_data *menu, return 1; } -#if (CONFIG_IS_ENABLED(CMD_BOOTEFI_BOOTMGR)) +#if (CONFIG_IS_ENABLED(CMD_BOOTEFI_BOOTMGR)) && (CONFIG_IS_ENABLED(CMD_EFICONFIG)) +/** + * generate_media_device_boot_option() - generate the media device boot option + * + * This function enumerates all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL + * and generate the bootmenu entries. + * This function also provide the BOOT#### variable maintenance for + * the media device entries. + * - Automatically create the BOOT#### variable for the newly detected device, + * this BOOT#### variable is distinguished by the special GUID + * stored in the EFI_LOAD_OPTION.optional_data + * - If the device is not attached to the system, the associated BOOT#### variable + * is automatically deleted. + * + * Return: status code + */ +static efi_status_t generate_media_device_boot_option(void) +{ + u32 i; + efi_status_t ret; + efi_uintn_t count; + efi_handle_t *volume_handles = NULL; + struct eficonfig_media_boot_option *opt = NULL; + + ret = efi_locate_handle_buffer_int(BY_PROTOCOL, &efi_simple_file_system_protocol_guid, + NULL, &count, (efi_handle_t **)&volume_handles); + if (ret != EFI_SUCCESS) + return ret; + + opt = calloc(count, sizeof(struct eficonfig_media_boot_option)); + if (!opt) + goto out; + + /* enumerate all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL */ + ret = eficonfig_enumerate_boot_option(opt, volume_handles, count); + if (ret != EFI_SUCCESS) + goto out; + + /* + * System hardware configuration may vary depending on the user setup. + * The boot option is automatically added by the bootmenu. + * If the device is not attached to the system, the boot option needs + * to be deleted. + */ + ret = eficonfig_delete_invalid_boot_option(opt, count); + if (ret != EFI_SUCCESS) + goto out; + + /* add non-existent boot option */ + for (i = 0; i < count; i++) { + u32 boot_index; + u16 var_name[9]; + + if (!opt[i].exist) { + ret = eficonfig_get_unused_bootoption(var_name, sizeof(var_name), + &boot_index); + if (ret != EFI_SUCCESS) + goto out; + + ret = efi_set_variable_int(var_name, &efi_global_variable_guid, + EFI_VARIABLE_NON_VOLATILE | + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS, + opt[i].size, opt[i].lo, false); + if (ret != EFI_SUCCESS) + goto out; + + ret = eficonfig_append_bootorder(boot_index); + if (ret != EFI_SUCCESS) + goto out; + } + } + +out: + if (opt) { + for (i = 0; i < count; i++) + free(opt[i].lo); + } + free(opt); + efi_free_pool(volume_handles); + + return ret; +} + /** * prepare_uefi_bootorder_entry() - generate the uefi bootmenu entries * @@ -340,11 +423,21 @@ static struct bootmenu_data *bootmenu_create(int delay) if (ret < 0) goto cleanup; -#if (CONFIG_IS_ENABLED(CMD_BOOTEFI_BOOTMGR)) +#if (CONFIG_IS_ENABLED(CMD_BOOTEFI_BOOTMGR)) && (CONFIG_IS_ENABLED(CMD_EFICONFIG)) if (i < MAX_COUNT - 1) { - ret = prepare_uefi_bootorder_entry(menu, &iter, &i); - if (ret < 0 && ret != -ENOENT) - goto cleanup; + efi_status_t efi_ret; + + /* + * UEFI specification requires booting from removal media using + * a architecture-specific default image name such as BOOTAA64.EFI. + */ + efi_ret = generate_media_device_boot_option(); + if (efi_ret != EFI_SUCCESS && efi_ret != EFI_NOT_FOUND) + goto cleanup; + + ret = prepare_uefi_bootorder_entry(menu, &iter, &i); + if (ret < 0 && ret != -ENOENT) + goto cleanup; } #endif diff --git a/cmd/eficonfig.c b/cmd/eficonfig.c index 51d4e36a54..564ddd02c1 100644 --- a/cmd/eficonfig.c +++ b/cmd/eficonfig.c @@ -1786,6 +1786,131 @@ static efi_status_t eficonfig_process_delete_boot_option(void *data) return ret; } +efi_status_t eficonfig_enumerate_boot_option(struct eficonfig_media_boot_option *opt, + efi_handle_t *volume_handles, efi_status_t count) +{ + u32 i; + struct efi_handler *handler; + efi_status_t ret = EFI_SUCCESS; + + for (i = 0; i < count; i++) { + char *optional_data; + u16 *dev_name, *p; + struct efi_load_option lo; + char buf[BOOTMENU_DEVICE_NAME_MAX]; + struct efi_device_path *device_path; + + ret = efi_search_protocol(volume_handles[i], &efi_guid_device_path, &handler); + if (ret != EFI_SUCCESS) + continue; + ret = efi_protocol_open(handler, (void **)&device_path, + efi_root, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL); + if (ret != EFI_SUCCESS) + continue; + + ret = efi_disk_get_device_name(volume_handles[i], buf, BOOTMENU_DEVICE_NAME_MAX); + if (ret != EFI_SUCCESS) + continue; + + dev_name = calloc(1, (strlen(buf) + 1) * sizeof(u16)); + if (!dev_name) { + ret = EFI_OUT_OF_RESOURCES; + goto out; + } + p = dev_name; + utf8_utf16_strncpy(&p, buf, strlen(buf)); + + lo.label = dev_name; + lo.attributes = LOAD_OPTION_ACTIVE; + lo.file_path = device_path; + lo.file_path_length = efi_dp_size(device_path) + sizeof(END); + /* + * Set the dedicated guid to optional_data, it is used to identify + * the boot option that automatically generated by the bootmenu. + * efi_serialize_load_option() expects optional_data is null-terminated + * utf8 string, so set the "1234567" string to allocate enough space + * to store guid, instead of realloc the load_option. + */ + lo.optional_data = "1234567"; + opt[i].size = efi_serialize_load_option(&lo, (u8 **)&opt[i].lo); + if (!opt[i].size) { + ret = EFI_OUT_OF_RESOURCES; + free(dev_name); + goto out; + } + /* set the guid */ + optional_data = (char *)opt[i].lo + (opt[i].size - u16_strsize(u"1234567")); + memcpy(optional_data, &efi_guid_bootmenu_auto_generated, sizeof(efi_guid_t)); + free(dev_name); + } + +out: + return ret; +} + +efi_status_t eficonfig_delete_invalid_boot_option(struct eficonfig_media_boot_option *opt, + efi_status_t count) +{ + u16 *bootorder; + u32 i, j; + efi_status_t ret; + efi_uintn_t num, size, bootorder_size; + void *load_option; + struct efi_load_option lo; + u16 varname[] = u"Boot####"; + + bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid, &bootorder_size); + if (!bootorder) + return EFI_SUCCESS; /* BootOrder is not defined, nothing to do */ + + num = bootorder_size / sizeof(u16); + for (i = 0; i < num;) { + efi_uintn_t tmp; + + efi_create_indexed_name(varname, sizeof(varname), + "Boot", bootorder[i]); + load_option = efi_get_var(varname, &efi_global_variable_guid, &size); + if (!load_option) + goto next; + + tmp = size; + ret = efi_deserialize_load_option(&lo, load_option, &size); + if (ret != EFI_SUCCESS) + goto next; + + if (size >= sizeof(efi_guid_bootmenu_auto_generated)) { + if (guidcmp(lo.optional_data, &efi_guid_bootmenu_auto_generated) == 0) { + for (j = 0; j < count; j++) { + if (opt[j].size == tmp && + memcmp(opt[j].lo, load_option, tmp) == 0) { + opt[j].exist = true; + break; + } + } + + if (j == count) { + ret = delete_boot_option(bootorder, i, bootorder_size); + if (ret != EFI_SUCCESS) { + free(load_option); + goto out; + } + + num--; + bootorder_size -= sizeof(u16); + free(load_option); + continue; + } + } + } +next: + free(load_option); + i++; + } + +out: + return ret; +} + /** * eficonfig_init() - do required initialization for eficonfig command * diff --git a/include/efi_loader.h b/include/efi_loader.h index c57f239043..0f52e3ee5d 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -959,6 +959,22 @@ struct efi_signature_store { struct x509_certificate; struct pkcs7_message; +/** + * struct eficonfig_media_boot_option - boot option for (removable) media device + * + * This structure is used to enumerate possible boot option + * + * @lo: Serialized load option data + * @size: Size of serialized load option data + * @exist: Flag to indicate the load option already exists + * in Non-volatile load option + */ +struct eficonfig_media_boot_option { + void *lo; + efi_uintn_t size; + bool exist; +}; + bool efi_hash_regions(struct image_region *regs, int count, void **hash, const char *hash_algo, int *len); bool efi_signature_lookup_digest(struct efi_image_regions *regs, @@ -1108,6 +1124,10 @@ efi_status_t efi_console_get_u16_string efi_status_t eficonfig_get_unused_bootoption(u16 *buf, efi_uintn_t buf_size, u32 *index); efi_status_t eficonfig_append_bootorder(u16 index); +efi_status_t eficonfig_enumerate_boot_option(struct eficonfig_media_boot_option *opt, + efi_handle_t *volume_handles, efi_status_t count); +efi_status_t eficonfig_delete_invalid_boot_option(struct eficonfig_media_boot_option *opt, + efi_status_t count); efi_status_t efi_disk_get_device_name(const efi_handle_t handle, char *buf, int size); diff --git a/lib/efi_loader/efi_bootmgr.c b/lib/efi_loader/efi_bootmgr.c index ede9116b3c..4b24b41047 100644 --- a/lib/efi_loader/efi_bootmgr.c +++ b/lib/efi_loader/efi_bootmgr.c @@ -246,6 +246,10 @@ static efi_status_t try_load_entry(u16 n, efi_handle_t *handle, } /* Set load options */ + if (size >= sizeof(efi_guid_t) && + !guidcmp(lo.optional_data, &efi_guid_bootmenu_auto_generated)) + size = 0; + if (size) { *load_options = malloc(size); if (!*load_options) { -- 2.17.1