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 57089ECAAD5 for ; Mon, 5 Sep 2022 12:47:18 +0000 (UTC) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 52B358498E; Mon, 5 Sep 2022 14:46:40 +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="QNwPNpLu"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 2B58A848CA; Mon, 5 Sep 2022 14:46:29 +0200 (CEST) Received: from mail-pg1-x530.google.com (mail-pg1-x530.google.com [IPv6:2607:f8b0:4864:20::530]) (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 F3A1F84951 for ; Mon, 5 Sep 2022 14:46:20 +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-x530.google.com with SMTP id q9so8025563pgq.6 for ; Mon, 05 Sep 2022 05:46:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc:subject:date; bh=gxj3TmdlD8JqSWQjWOYzMkNhnPPwTunA6/b5V//KRKo=; b=QNwPNpLuFoXRnej4k7U/4rG3pgXLdcyeI2YD8oA1a/8er1ZMXQivIwFaengcA1lsEI tQKM+5xmO2m5IBsLuE8XV5+mFem4PZJtHRxjwHhP+8hveYGe6hLjrdu8VXaiV2gWaZUf slpojsW/H46RSlGObWRUaJR3tT7Qm1JJxpXQ1WVqdhnlO9d1uBH7NGV9Rvds8LkLYt/W Ias/j3IkeTiUQIGWRTLJy2cF/5hvN03B1sbusX2kDjpUNP4JZKqKoDvwOER7Fz8NQ1pP h4U7uiEle3YFWA2Men5985yYhQxyM9qWp8y96Cr7AC1FfuQj4mq2uFj6a7QsxuqsyZyV 6VjA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from :x-gm-message-state:from:to:cc:subject:date; bh=gxj3TmdlD8JqSWQjWOYzMkNhnPPwTunA6/b5V//KRKo=; b=334/aQjdXQFPNtakM2IgQjpHQIM7Dxv3Zf630THPZEbFsPAc76dzi/mUr37a/DEx8d 3yTEn5gpEfBlx5ECcriPNxKpWTT9kz9PP/IzY3CICtcXefN+9fVBu2oWcUR53BVlRdvT K8p7S5TtQTDHxIN5YvVx0CaFvnSr257GhPPLnEgNU5Kn0OJ+Sepk9m1RDNl03Y+Xzxko 82BglZ1EgTLOxbzW9qfWngQsjRK0qh2th0PIJ/3tnKUE/yxu2qr9oKwEvRAHoR0NWN8a Ov4x/nl+S03f5MmbDvS3q0C7iy80CfYqE8EcoMEt4iXCoCLstJJrTfwJPYiGDrkxDmEc /hbg== X-Gm-Message-State: ACgBeo2/k2djbkMZWvdUc4dcmCSHSiMDrafIWWT2On4PTc3FZacOcSMK kGkH2YyF42b2+wZJ3WzEJQdl5XUgiqPkqg== X-Google-Smtp-Source: AA6agR6r4kiyzUw/rUxr1WWCDTDiHxSHwfejzmg9LKKkS10d9Pgek0TJMNdLdByQGGQEouxB6ohS9Q== X-Received: by 2002:a05:6a00:b55:b0:538:579c:d5ae with SMTP id p21-20020a056a000b5500b00538579cd5aemr35475694pfo.22.1662381978963; Mon, 05 Sep 2022 05:46:18 -0700 (PDT) Received: from localhost.localdomain ([240d:1a:cf7:5800:82fa:5bff:fe4b:26b1]) by smtp.gmail.com with ESMTPSA id y64-20020a623243000000b0053639773ad8sm7660949pfy.119.2022.09.05.05.46.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Sep 2022 05:46:18 -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 v16 05/10] bootmenu: add removable media entries Date: Mon, 5 Sep 2022 21:47:57 +0900 Message-Id: <20220905124803.2909-6-masahisa.kojima@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220905124803.2909-1-masahisa.kojima@linaro.org> References: <20220905124803.2909-1-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 --- No update since v14 Changes in v14: - remove invalid free() call Changes in v13: - remove BootOrder variable dependency Changes in v12: - move generate_media_device_boot_option into cmd/eficonfig.c and expose it - remove unnecessary include file Changes in v11: - update delete_boot_option() parameter Changes in v10: - add function comment - devname dynamic allocation removes, allocate in stack - delete BOOT#### when updating BootOrder fails 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 | 22 +++- cmd/eficonfig.c | 208 +++++++++++++++++++++++++++++++++++ include/efi_config.h | 1 + include/efi_loader.h | 16 +++ lib/efi_loader/efi_bootmgr.c | 4 + 5 files changed, 245 insertions(+), 6 deletions(-) diff --git a/cmd/bootmenu.c b/cmd/bootmenu.c index 704d36debe..3340be1632 100644 --- a/cmd/bootmenu.c +++ b/cmd/bootmenu.c @@ -7,7 +7,7 @@ #include #include #include -#include +#include #include #include #include @@ -220,7 +220,7 @@ 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)) /** * prepare_uefi_bootorder_entry() - generate the uefi bootmenu entries * @@ -340,11 +340,21 @@ 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 = eficonfig_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 f4d9652628..edb42d2742 100644 --- a/cmd/eficonfig.c +++ b/cmd/eficonfig.c @@ -1814,6 +1814,214 @@ static efi_status_t eficonfig_process_delete_boot_option(void *data) return ret; } +/** + * eficonfig_enumerate_boot_option() - enumerate the possible bootable media + * + * @opt: pointer to the media boot option structure + * @volume_handles: pointer to the efi handles + * @count: number of efi handle + * Return: status code + */ +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++) { + u16 *p; + u16 dev_name[BOOTMENU_DEVICE_NAME_MAX]; + char *optional_data; + 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; + + 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; + 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)); + } + +out: + return ret; +} + +/** + * eficonfig_delete_invalid_boot_option() - delete non-existing boot option + * + * @opt: pointer to the media boot option structure + * @count: number of media boot option structure + * Return: status code + */ +efi_status_t eficonfig_delete_invalid_boot_option(struct eficonfig_media_boot_option *opt, + efi_status_t count) +{ + u32 i, j; + efi_uintn_t size; + efi_status_t ret; + void *load_option; + struct efi_load_option lo; + u16 varname[] = u"Boot####"; + + for (i = 0; i <= 0xFFFF; i++) { + efi_uintn_t tmp; + + efi_create_indexed_name(varname, sizeof(varname), "Boot", i); + load_option = efi_get_var(varname, &efi_global_variable_guid, &size); + if (!load_option) + continue; + + 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(i); + if (ret != EFI_SUCCESS) { + free(load_option); + goto out; + } + } + } + } +next: + free(load_option); + } + +out: + return ret; +} + +/** + * 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 + */ +efi_status_t eficonfig_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) { + efi_set_variable_int(var_name, &efi_global_variable_guid, + 0, 0, NULL, false); + goto out; + } + } + } + +out: + if (opt) { + for (i = 0; i < count; i++) + free(opt[i].lo); + } + free(opt); + efi_free_pool(volume_handles); + + return ret; +} + + /** * eficonfig_init() - do required initialization for eficonfig command * diff --git a/include/efi_config.h b/include/efi_config.h index dddffe045e..098cac2115 100644 --- a/include/efi_config.h +++ b/include/efi_config.h @@ -93,5 +93,6 @@ efi_status_t eficonfig_select_file_handler(void *data); 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_generate_media_device_boot_option(void); #endif diff --git a/include/efi_loader.h b/include/efi_loader.h index 4461f721e0..6b63ae8dde 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -953,6 +953,22 @@ 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, 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