From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 06 Oct 2025 06:16:11 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1v5cdv-004lr7-2b for lore@lore.pengutronix.de; Mon, 06 Oct 2025 06:16:11 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1v5cdu-0002qr-LA for lore@pengutronix.de; Mon, 06 Oct 2025 06:16:11 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=UaoqZbJziHezRM5qfhLs6y37x/1XG1l4x24ll67GHCA=; b=zPFgI/elYosNzkbWiGzvo7z9nw RBgpVKYJVr/ZLzvTNvLN1bsr8BF3KeJMxAYsq3mVc6+i81XW2prg6sSg7qxraqlCSpWbJzlw6ZLAI TKiD+6r5nHbLP9Pqut98RyoTWqYUDsq/JfMqxYcDaU2RLmFtF9MqRaahrnikFBa5uj1+AAcI4wvz3 sndFhQp25FKVRbRw6dUzYIouyJEA+hdVvaUn940/za5l+/9rJ5OCT4LlMHdaOaWd4k4cmXN74Tz8t Zqs4Qog+VZ3d7uY6OddoX1KQQy94acPeqzfMD/jMV0MsqPAa4Vrtef7pjV4QQch2nIMgrXrgghn+V yRPR1KrA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1v5cd9-0000000GuHV-2lCy; Mon, 06 Oct 2025 04:15:23 +0000 Received: from mail-qt1-x830.google.com ([2607:f8b0:4864:20::830]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1v5cd6-0000000GuFw-3TWW for barebox@lists.infradead.org; Mon, 06 Oct 2025 04:15:21 +0000 Received: by mail-qt1-x830.google.com with SMTP id d75a77b69052e-4df60ea79d1so49273121cf.2 for ; Sun, 05 Oct 2025 21:15:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1759724120; x=1760328920; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=UaoqZbJziHezRM5qfhLs6y37x/1XG1l4x24ll67GHCA=; b=cK/lvAGpJV09mxY0MpQsMtobBKXikrA4bdRnYDRpd4VWBeiFfzRSo8dM/5h+UdsHL4 oWv+oDVNYLv3BTiiBaXtHpS2jGv59ofzbLz2Zw7CJh5bpBKSyf0x7+hS6vmFqBO1lsdm Q42kaopFL8w3R9+jIFFETgi81H0YmEY3JCM1Txb47GIhZ58FJe3lgrc1bh4Bbp+qxTn1 ar5S6vPumREANaeOCDalTUWD1eUlzIW3C0UM8aVNhyN+Vs/OWxz7CKUV2TzV8XtXRv3X KIWiKmgig99UKdpMlri4ieTBMArV3LMSgWNkwt5So2uFLtlbNJHNCPqhPWHmERYMPyAn BWQw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1759724120; x=1760328920; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=UaoqZbJziHezRM5qfhLs6y37x/1XG1l4x24ll67GHCA=; b=VqfuMNQGhGVzGXcYWQAKpFQ9mnptqCsnioWaYiOrX0HmzmnB/Gwa5r26njKX4f95iv /2DfHIQiQiyhgE3h4BsuwGy9eGD9/woEK7fpG+6tjDPQZT3KTBiiO4Sb+TuWoZkrqOkE PtAizBpdtLEpDTiEYYCrp9zb88pqllm1yNq5MkisR/T10c0HYtO7hMp8wed8BDZNeTQs 87L+hfjM8I71y0W1SLu6aXrAd7RGs//8z/mwgWt+gJ9Ut6iBis4qRMvJYeouw63UuvCn a4brQkESk3nYlwkCefFbivWRqrdX/nI6YibQLOAv/EyAnkm3ku43g8EO+1j162EKP1Bd HF4g== X-Gm-Message-State: AOJu0YwLZEXug6xRyCUxC7dvGlCN/Nk4aTYQ0GlB6nnnmaEb44lUIjIq I7UXSP0b/xVDLcm+jK39qtt2p29Vile8YegaZWx/CuVK8X/+3p8TeIg6 X-Gm-Gg: ASbGncvz1SVeZrfw2sAZ66LjCsLLgE9UGC+uxL3w2eWMtlVCzEYbcxLVI4n8SnkkswL v3/ZKojrEhgIA1flxJvGmS9nkMNinElGF3dJzEhCNYmzUXVmNANs99AjrZa7Az06MLGEsL6i05a mIa3b5VA5ZqaTh56I1Xks3bwKQThp5EX8UkwVVsrK86zaBWP/NjFCjt95rEnzOBcc7Nud0NrZM9 igoGhcC09ZhY8cyeOgCr5scA/IZ1g5udW+dst0jDS72sMiDTIzvpw72Ic/cZynuTMLJ9fQLDLv2 azPkCjjQlz1quANtbEqFxAI8DIwp84DkfGySveYrCAxUYUt71B5auTlWlKQVkehbh/2kzgwiKOJ 4t9lGaHfhSTA+Ryufjc1UOyy9D/kmrogO68oavCxSlB8YsPGg8s5Qkkbuw1X6HFPD5EwVtV65o6 s= X-Google-Smtp-Source: AGHT+IFKjWnYbAk/ZkCDQe+FuwM3CL6q088kqnigcmqT4hLoVLL2kZrtL0cQgxzl95e2FPR2DCVNwQ== X-Received: by 2002:a05:622a:1108:b0:4d8:3c3:27c8 with SMTP id d75a77b69052e-4e576b1625fmr138595841cf.67.1759724119502; Sun, 05 Oct 2025 21:15:19 -0700 (PDT) Received: from Latitude-7490.ht.home ([2607:fa49:8c41:2600:1608:a712:ade2:2b30]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-4e55cadcecdsm119506221cf.23.2025.10.05.21.15.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Oct 2025 21:15:18 -0700 (PDT) From: chalianis1@gmail.com To: s.hauer@pengutronix.de Cc: barebox@lists.infradead.org, Chali Anis , Ahmad Fatoum Date: Mon, 6 Oct 2025 00:15:04 -0400 Message-Id: <20251006041512.1360284-3-chalianis1@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251006041512.1360284-1-chalianis1@gmail.com> References: <20251006041512.1360284-1-chalianis1@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251005_211520_888003_29810BCA X-CRM114-Status: GOOD ( 17.95 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-3.6 required=4.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 03/11] efi: payload: add support for EFI initrd media protocol X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) From: Chali Anis Implement the EFI initrd media protocol, which allows registering an initramfs data to be loaded by the linux after vi EFI Initrd Media protocol. Signed-off-by: Ahmad Fatoum Signed-off-by: Chali Anis --- efi/guid.c | 4 ++ efi/payload/Makefile | 1 + efi/payload/efi-initrd.c | 104 ++++++++++++++++++++++++++++++++++++++ include/efi.h | 4 ++ include/efi/efi-payload.h | 3 ++ 5 files changed, 116 insertions(+) create mode 100644 efi/payload/efi-initrd.c diff --git a/efi/guid.c b/efi/guid.c index ef230a2b2403..46440c9f3328 100644 --- a/efi/guid.c +++ b/efi/guid.c @@ -44,6 +44,7 @@ const efi_guid_t efi_load_file_protocol_guid = EFI_LOAD_FILE_PROTOCOL_GUID; const efi_guid_t efi_load_file2_protocol_guid = EFI_LOAD_FILE2_PROTOCOL_GUID; const efi_guid_t efi_device_path_utilities_protocol_guid = EFI_DEVICE_PATH_UTILITIES_PROTOCOL_GUID; +const efi_guid_t efi_linux_initrd_media_guid = EFI_LINUX_INITRD_MEDIA_GUID; #define EFI_GUID_STRING(guid, short, long) do { \ if (!efi_guidcmp(guid, *g)) \ @@ -128,5 +129,8 @@ const char *efi_guid_string(efi_guid_t *g) EFI_GUID_STRING(EFI_ISCSIDXE_INF_GUID, "IScsiDxe.inf", "EFI IScsiDxe.inf File GUID"); EFI_GUID_STRING(EFI_VLANCONFIGDXE_INF_GUID, "VlanConfigDxe.inf", "EFI VlanConfigDxe.inf File GUID"); + /* Ramdisk */ + EFI_GUID_STRING(EFI_LINUX_INITRD_MEDIA_GUID, "Initrd Media", "EFI Linux Initrd Media GUID"); + return "unknown"; } diff --git a/efi/payload/Makefile b/efi/payload/Makefile index a4a0332a8288..1250535302d3 100644 --- a/efi/payload/Makefile +++ b/efi/payload/Makefile @@ -2,6 +2,7 @@ obj-y += init.o obj-y += image.o +obj-y += efi-initrd.o obj-$(CONFIG_OFTREE) += fdt.o bbenv-y += env-efi obj-$(CONFIG_CMD_IOMEM) += iomem.o diff --git a/efi/payload/efi-initrd.c b/efi/payload/efi-initrd.c new file mode 100644 index 000000000000..ddc21704a8e0 --- /dev/null +++ b/efi/payload/efi-initrd.c @@ -0,0 +1,104 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * efi-initrd.c - barebox EFI payload support + * + * Copyright (c) 2025 Anis Chali + * Copyright (C) 2025 Ahmad Fatoum + */ +#include +#include +#include +#include +#include +#include +#include +#include + +static efi_status_t EFIAPI efi_initrd_load_file2( + struct efi_load_file_protocol *this, struct efi_device_path *file_path, + bool boot_policy, unsigned long *buffer_size, void *buffer); + +static const struct { + struct efi_device_path_vendor vendor; + struct efi_device_path end; +} __packed initrd_dev_path = { + { { + DEVICE_PATH_TYPE_MEDIA_DEVICE, + DEVICE_PATH_SUB_TYPE_VENDOR_PATH, + sizeof(initrd_dev_path.vendor), + }, + EFI_LINUX_INITRD_MEDIA_GUID }, + { DEVICE_PATH_TYPE_END, DEVICE_PATH_SUB_TYPE_END, + DEVICE_PATH_END_LENGTH } +}; + +static struct linux_initrd { + struct efi_load_file_protocol base; + void *start; + size_t size; + efi_handle_t lf2_handle; +} initrd; + +#define to_linux_initrd(x) container_of(x, struct linux_initrd, base) + +static efi_status_t EFIAPI efi_initrd_load_file2( + struct efi_load_file_protocol *this, struct efi_device_path *file_path, + bool boot_policy, unsigned long *buffer_size, void *buffer) +{ + + struct linux_initrd *initrd = to_linux_initrd(this); + + if (!this || this != &initrd->base || !buffer_size) + return EFI_INVALID_PARAMETER; + + if (file_path->type != initrd_dev_path.end.type || + file_path->sub_type != initrd_dev_path.end.sub_type) + return EFI_INVALID_PARAMETER; + + if (boot_policy) + return EFI_UNSUPPORTED; + + if (!buffer || *buffer_size < initrd->size) { + *buffer_size = initrd->size; + return EFI_BUFFER_TOO_SMALL; + } else { + memcpy(buffer, initrd->start, initrd->size); + *buffer_size = initrd->size; + } + + return EFI_SUCCESS; +} + +int efi_initrd_register(void *initrd_base, size_t initrd_sz) +{ + efi_status_t efiret; + int ret; + + initrd.base.load_file = efi_initrd_load_file2; + initrd.start = initrd_base; + initrd.size = initrd_sz; + + efiret = BS->install_multiple_protocol_interfaces( + &initrd.lf2_handle, &efi_load_file2_protocol_guid, &initrd.base, + &efi_device_path_protocol_guid, &initrd_dev_path, NULL); + if (EFI_ERROR(efiret)) { + pr_err("Failed to install protocols for INITRD %s\n", + efi_strerror(efiret)); + ret = -efi_errno(efiret); + return ret; + } + + return 0; +} + +void efi_initrd_unregister(void) +{ + if (!initrd.base.load_file) + return; + + BS->uninstall_multiple_protocol_interfaces( + initrd.lf2_handle, &efi_device_path_protocol_guid, &initrd_dev_path, + &efi_load_file2_protocol_guid, &initrd.base, NULL); + + initrd.base.load_file = NULL; +} \ No newline at end of file diff --git a/include/efi.h b/include/efi.h index 40b69fdb0188..bd339ea097c3 100644 --- a/include/efi.h +++ b/include/efi.h @@ -558,6 +558,9 @@ extern struct efi_runtime_services *RT; #define EFI_DRIVER_BINDING_PROTOCOL_GUID \ EFI_GUID(0x18a031ab, 0xb443, 0x4d1a, 0xa5, 0xc0, 0x0c, 0x09, 0x26, 0x1e, 0x9f, 0x71) +#define EFI_LINUX_INITRD_MEDIA_GUID \ + EFI_GUID(0x5568e427, 0x68fc, 0x4f3d, 0xac, 0x74, 0xca, 0x55, 0x52, 0x31, 0xcc, 0x68) + struct efi_driver_binding_protocol { efi_status_t (EFIAPI * supported)( struct efi_driver_binding_protocol *this, @@ -603,6 +606,7 @@ extern const efi_guid_t efi_guid_event_group_reset_system; extern const efi_guid_t efi_load_file_protocol_guid; extern const efi_guid_t efi_load_file2_protocol_guid; extern const efi_guid_t efi_device_path_utilities_protocol_guid; +extern const efi_guid_t efi_linux_initrd_media_guid; struct efi_config_table { efi_guid_t guid; diff --git a/include/efi/efi-payload.h b/include/efi/efi-payload.h index fe45864dd8a7..d8e66a187a87 100644 --- a/include/efi/efi-payload.h +++ b/include/efi/efi-payload.h @@ -34,4 +34,7 @@ int efi_set_variable_usec(char *name, efi_guid_t *vendor, uint64_t usec); void *efi_earlymem_alloc(const struct efi_system_table *sys_table, size_t *memsize, enum efi_memory_type mem_type); +int efi_initrd_register(void *initrd, size_t initrd_size); +void efi_initrd_unregister(void); + #endif -- 2.34.1