From nobody Mon Feb 9 17:04:54 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of groups.io designates 66.175.222.12 as permitted sender) client-ip=66.175.222.12; envelope-from=bounce+27952+51982+1787277+3901457@groups.io; helo=web01.groups.io; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.12 as permitted sender) smtp.mailfrom=bounce+27952+51982+1787277+3901457@groups.io ARC-Seal: i=1; a=rsa-sha256; t=1575647096; cv=none; d=zohomail.com; s=zohoarc; b=GeAN+AXsBYOTG8gPW0lGQqotYkEY1A0DWGN4XCU6lHo5UVIKVoXs1mN4e0BImin4u/O8DerMYiKz4EQ0gWSlDT1Db5TtBvY0vxe5RH28xaGlErC3+kyKtHDkvR28Scjq1NzG/1mX4stjuw1o3NzDtmqNAf93NxKWxUpj2CldwcU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1575647096; h=Cc:Date:From:In-Reply-To:List-Id:List-Unsubscribe:Message-ID:Reply-To:References:Sender:Subject:To; bh=rmNWsyFcN07pVggyX+Wi/e5FhNwHHJxJMRHF3un12Q4=; b=Codlp2ZzeHi/s5C/m96kicxyz8Ej9Py9mkKCRfh6hCEHcJmN0Bz68cj+T1stXQO+NMHkBJw61B/5ULC5knIlOC7qquxoT9uix8QJXbJs5NGi8LOY9+1qSDDJyl/5IJDh08YBbvj8PcU6TkXpUBDJToyMqFfhYSP1paucGeleRss= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.12 as permitted sender) smtp.mailfrom=bounce+27952+51982+1787277+3901457@groups.io Received: from web01.groups.io (web01.groups.io [66.175.222.12]) by mx.zohomail.com with SMTPS id 1575647096069268.3701413309906; Fri, 6 Dec 2019 07:44:56 -0800 (PST) Return-Path: X-Received: by 127.0.0.2 with SMTP id aaaaYY1788612xaaaaaaaaaa; Fri, 06 Dec 2019 07:44:55 -0800 X-Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by mx.groups.io with SMTP id smtpd.web11.5278.1575646185155062209 for ; Fri, 06 Dec 2019 07:29:45 -0800 X-Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C22E8DA7; Fri, 6 Dec 2019 07:29:44 -0800 (PST) X-Received: from e123331-lin.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 731423F718; Fri, 6 Dec 2019 07:29:43 -0800 (PST) From: Ard Biesheuvel To: devel@edk2.groups.io Cc: Ard Biesheuvel , Michael D Kinney , Leif Lindholm , Liming Gao , Hao A Wu , Eric Dong , Ray Ni , Achin Gupta , Jiewen Yao Subject: [edk2-devel] [PATCH 1/7] MdePkg: introduce MM communicate 2 protocol Date: Fri, 6 Dec 2019 15:29:40 +0000 Message-Id: <20191206152946.624-2-ard.biesheuvel@arm.com> In-Reply-To: <20191206152946.624-1-ard.biesheuvel@arm.com> References: <20191206152946.624-1-ard.biesheuvel@arm.com> Precedence: Bulk List-Unsubscribe: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,ard.biesheuvel@arm.com X-Gm-Message-State: aaaaaaaaaaaaaaaaaaaaaaaax1787277AA= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1575647095; bh=yYGUA3ylw+6YXSLqisUUvCRkLhW/0f+itS2qYngOoSw=; h=Cc:Date:From:Reply-To:Subject:To; b=EyziqegJ6h/x8sZOgDoBtwPKkP6rYNlCuWagH3JXac3qIXA5Ky4pG82CjDeJCJkBlfp p2SQRzy5axDXCv5H4wZw3xK6kWx4Isk2zfJEApiW1akzncF4gobjwvwrvo6UeS2s3ioTQ oNf0/dh3RllO/uCud+yfIQWY0D4Akcujtqo= X-ZohoMail-DKIM: pass (identity @groups.io) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Ard Biesheuvel Add the protocol definition of the MM communicate 2 protocol, which is introduced in version 1.7 errata A of the PI spec. Signed-off-by: Ard Biesheuvel --- MdePkg/Include/Protocol/MmCommunication2.h | 69 ++++++++++++++++++++ MdePkg/MdePkg.dec | 7 ++ 2 files changed, 76 insertions(+) diff --git a/MdePkg/Include/Protocol/MmCommunication2.h b/MdePkg/Include/Pr= otocol/MmCommunication2.h new file mode 100644 index 000000000000..05f56dcae53e --- /dev/null +++ b/MdePkg/Include/Protocol/MmCommunication2.h @@ -0,0 +1,69 @@ +/** @file + EFI MM Communication Protocol 2 as defined in the PI 1.7 errata A specif= ication. + + This protocol provides a means of communicating between drivers outside = of MM and MMI + handlers inside of MM. + + Copyright (c) 2017, Intel Corporation. All rights reserved.
+ Copyright (c) 2019, Arm Limited. All rights reserved.
+ SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#ifndef _MM_COMMUNICATION2_H_ +#define _MM_COMMUNICATION2_H_ + +#include + +#define EFI_MM_COMMUNICATION2_PROTOCOL_GUID \ + { \ + 0x378daedc, 0xf06b, 0x4446, { 0x83, 0x14, 0x40, 0xab, 0x93, 0x3c, 0x87= , 0xa3 } \ + } + +typedef struct _EFI_MM_COMMUNICATION2_PROTOCOL EFI_MM_COMMUNICATION2_PROT= OCOL; + +/** + Communicates with a registered handler. + + This function provides a service to send and receive messages from a reg= istered UEFI service. + + @param[in] This The EFI_MM_COMMUNICATION_PROTOCOL instanc= e. + @param[in] CommBufferPhysical Physical address of the MM communication = buffer + @param[in] CommBufferVirtual Virtual address of the MM communication b= uffer + @param[in] CommSize The size of the data buffer being passed = in. On exit, the size of data + being returned. Zero if the handler does = not wish to reply with any data. + This parameter is optional and may be NUL= L. + + @retval EFI_SUCCESS The message was successfully posted. + @retval EFI_INVALID_PARAMETER CommBufferPhysical was NULL or CommBuffer= Virtual was NULL. + @retval EFI_BAD_BUFFER_SIZE The buffer is too large for the MM implem= entation. + If this error is returned, the MessageLen= gth field + in the CommBuffer header or the integer p= ointed by + CommSize, are updated to reflect the maxi= mum payload + size the implementation can accommodate. + @retval EFI_ACCESS_DENIED The CommunicateBuffer parameter or CommSi= ze parameter, + if not omitted, are in address range that= cannot be + accessed by the MM environment. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_MM_COMMUNICATE2)( + IN CONST EFI_MM_COMMUNICATION2_PROTOCOL *This, + IN OUT VOID *CommBufferPhysical, + IN OUT VOID *CommBufferVirtual, + IN OUT UINTN *CommSize OPTIONAL + ); + +/// +/// EFI MM Communication Protocol provides runtime services for communicat= ing +/// between DXE drivers and a registered MMI handler. +/// +struct _EFI_MM_COMMUNICATION2_PROTOCOL { + EFI_MM_COMMUNICATE2 Communicate; +}; + +extern EFI_GUID gEfiMmCommunication2ProtocolGuid; + +#endif + diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec index d022cc5e3ef2..93037e0e6c61 100644 --- a/MdePkg/MdePkg.dec +++ b/MdePkg/MdePkg.dec @@ -1276,6 +1276,13 @@ [Protocols] ## Include/Protocol/SpiSmmNorFlash.h gEfiSpiSmmNorFlashProtocolGuid =3D { 0xaab18f19, 0xfe14, 0x4666,= { 0x86, 0x04, 0x87, 0xff, 0x6d, 0x66, 0x2c, 0x9a }} =20 + # + # Protocols defined in PI 1.7. + # + + ## Include/Protocol/MmCommunication2.h + gEfiMmCommunication2ProtocolGuid =3D { 0x378daedc, 0xf06b, 0x4446, { 0x= 83, 0x14, 0x40, 0xab, 0x93, 0x3c, 0x87, 0xa3 }} + # # Protocols defined in UEFI2.1/UEFI2.0/EFI1.1 # --=20 2.17.1 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#51982): https://edk2.groups.io/g/devel/message/51982 Mute This Topic: https://groups.io/mt/67497124/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-