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18 Dec 2023 20:10:58 +0000 From: "Saloni Kasbekar" To: "devel@edk2.groups.io" , "sivaramann@ami.com" , "Clark-williams, Zachary" CC: Natalya Kalistratova , Dhanaraj V , Santhosh Kumar V , =?iso-2022-jp?B?R2VuZ1lvdSBaaG91ICgbJEI8fjkuTSQbKEIp?= Subject: Re: [edk2-devel] Clarification on LoadFile2 Protocol Installation for Network Boot Devices Thread-Topic: Clarification on LoadFile2 Protocol Installation for Network Boot Devices Thread-Index: AQHaL0nwlX1TCNDXtUGv2lauB4QO4LCve2Sg Date: Mon, 18 Dec 2023 20:10:58 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-publictraffictype: Email x-ms-traffictypediagnostic: BY5PR11MB3861:EE_|DS0PR11MB7384:EE_ x-ms-office365-filtering-correlation-id: 939222dd-365a-4f78-8e56-08dc000572d5 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam-message-info: 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(UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: hII9o5bcd3RmI9BgzI0cFzfH8o24Jwuk7LqvGbXn/ZlVvNvxKZTQ7m7RfIgEhclcSGZHU1hiK15ghHxWWytYN85v+n3Xr5BB+WPp0eJ5ByI= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR11MB7384 X-OriginatorOrg: intel.com Precedence: Bulk List-Subscribe: List-Help: 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,saloni.kasbekar@intel.com List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: DJGTinkfSdd6FLUkvBvs8Lmex7686176AA= Content-Language: en-US Content-Type: multipart/alternative; boundary="_000_BY5PR11MB38613EC3037CFE08A2723B4AF190ABY5PR11MB3861namp_" X-GND-Status: LEGIT Authentication-Results: spool.mail.gandi.net; dkim=pass header.d=groups.io header.s=20140610 header.b=YnveIIUN; arc=reject ("signature check failed: fail, {[1] = sig:microsoft.com:reject}"); dmarc=fail reason="SPF not aligned (relaxed), DKIM not aligned (relaxed)" header.from=intel.com (policy=none); spf=pass (spool.mail.gandi.net: domain of bounce@groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce@groups.io --_000_BY5PR11MB38613EC3037CFE08A2723B4AF190ABY5PR11MB3861namp_ Content-Type: text/plain; charset="iso-2022-jp" Content-Transfer-Encoding: quoted-printable Hi Siva, =1B$B!H=1B(BThe EFI_LOAD_FILE2_PROTOCOL is a simple protocol used to obtain= files from arbitrary devices that are not boot options=1B$B!I=1B(B =1B$B!H=1B(BThe EFI_LOAD_FILE_PROTOCOL is used for devices that do not dire= ctly support file systems. Network devices commonly boot in this model where the image is materialized without the nee= d of a file system.=1B$B!I=1B(B Based on the above statements, I believe the Network stack is fine using th= e current EFI_LOAD_FILE_PROTOCOL and not the EFI_LOAD_FILE2_PROTOCOL as the= y are currently loaded as boot options. We currently do install the EFI_LOA= D_FILE_PROTOCOL within the Network stack. Eg - // // Create a child handle for the HTTP boot and install DevPath and Load f= ile protocol on it. // CopyMem (&Private->Ip6Nic->LoadFile, &gHttpBootDxeLoadFile, sizeof (Priva= te->LoadFile)); Status =3D gBS->InstallMultipleProtocolInterfaces ( &Private->Ip6Nic->Controller, &gEfiLoadFileProtocolGuid, &Private->Ip6Nic->LoadFile, &gEfiDevicePathProtocolGuid, Private->Ip6Nic->DevicePath, NULL ); Maybe we need to update #18 to include Network devices? Thanks, Saloni From: devel@edk2.groups.io On Behalf Of Sivaraman Na= inar via groups.io Sent: Friday, December 15, 2023 3:29 AM To: devel@edk2.groups.io; Clark-williams, Zachary ; Kasbekar, Saloni Cc: Natalya Kalistratova ; Dhanaraj V = ; Santhosh Kumar V ; GengYou Zhou (=1B$B<~9.M$=1B(B= ) Subject: [edk2-devel] reg: Clarification on LoadFile2 Protocol Installation= for Network Boot Devices Hello ZClarkWilliams: Could you please help to clarify if NetworkStack MUST install the LoadFile2= Protocol or not. With reference to the below spec item, the LoadFile2 prot= ocol must be implemented. In one of the BIOS environment, the Setup Browser Locates the LoadFile2 ins= tance of Network Boot Device and it not found as it not installed by the cu= rrent NetworkPkg. Can you please comment if there is any reason behind not installing during = the HTTP Boot. =1B$B!H=1B(BUEFI SPEC 2.6.3 Driver-Specific Elements There are a number of UEFI elements that can= be added or removed depending on the features that a specific driver requi= res. Drivers can be implemented by platform firmware developers to support = buses and devices in a specific platform. Drivers can also be implemented b= y add-in card vendors for devices that might be integrated into the platfor= m hardware or added to a platform through an expansion slot. The following = list includes possible driver features, and the UEFI elements that are requ= ired for each feature type: 1. If a driver is written for a boot device that is not a block-oriented= device, a file system-based device, or a console device, then the EFI_LOAD= _FILE2_PROTOCOL must be implemented. =1B$B!H=1B(B Thanks Siva -The information contained in this message may be confidential and propriet= ary to American Megatrends (AMI). This communication is intended to be read= only by the individual or entity to whom it is addressed or by their desig= nee. If the reader of this message is not the intended recipient, you are o= n notice that any distribution of this message, in any form, is strictly pr= ohibited. Please promptly notify the sender by reply e-mail or by telephone= at 770-246-8600, and then delete or destroy all copies of the transmission= . -=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 (#112652): https://edk2.groups.io/g/devel/message/112652 Mute This Topic: https://groups.io/mt/103249982/7686176 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [rebecca@openfw.io] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- --_000_BY5PR11MB38613EC3037CFE08A2723B4AF190ABY5PR11MB3861namp_ Content-Type: text/html; charset="iso-2022-jp" Content-Transfer-Encoding: quoted-printable

Hi Siva,

 

=1B$B!H=1B(BThe EFI_LOAD_FILE2_PROTOCO= L is a simple protocol used to obtain files from arbitrary devices that are= not boot

options=1B$B!I=1B(B<= /i>

=1B$B!H=1B(BThe EFI_LOAD_FILE_PROTOCOL= is used for devices that do not directly support file systems. Network dev= ices

commonly boot in this model where the = image is materialized without the need of a file system.=1B$B!I=1B(B

 

Based on the above statements, I believe = the Network stack is fine using the current EFI_LOAD_FILE_PROTOCOL and not = the EFI_LOAD_FILE2_PROTOCOL as they are currently loaded as boot options. We currently do install the EFI_LOAD_FILE_PROTOCOL= within the Network stack. Eg –

  //

  // Create a child handle for the H= TTP boot and install DevPath and Load file protocol on it.

  //

  CopyMem (&Private->Ip6Nic-&= gt;LoadFile, &gHttpBootDxeLoadFile, sizeof (Private->LoadFile));

  Status =3D gBS->InstallMultiple= ProtocolInterfaces (

       = ;           &Private-= >Ip6Nic->Controller,

       = ;           &gEfiLoad= FileProtocolGuid,

       = ;           &Private-= >Ip6Nic->LoadFile,

       = ;           &gEfiDevi= cePathProtocolGuid,

       = ;           Private->I= p6Nic->DevicePath,

       = ;           NULL

       = ;           );=

 

Maybe we need to update #18 to include Ne= twork devices?

 

Thanks,

Saloni

 

From: devel@edk2.groups.io <d= evel@edk2.groups.io> On Behalf Of Sivaraman Nainar via groups.io
Sent: Friday, December 15, 2023 3:29 AM
To: devel@edk2.groups.io; Clark-williams, Zachary <zachary.clark-= williams@intel.com>; Kasbekar, Saloni <saloni.kasbekar@intel.com><= br> Cc: Natalya Kalistratova <NatalyaK@ami.com>; Dhanaraj V <vd= hanaraj@ami.com>; Santhosh Kumar V <santhoshkumarv@ami.com>; GengY= ou Zhou (=1B$B<~9.M$=1B(B) <GengYouZhou@ami.com>
Subject: [edk2-devel] reg: Clarification on LoadFile2 Protocol Insta= llation for Network Boot Devices

 

Hello ZClarkWilliams:

 

Could you please help to clarify if NetworkStack MUS= T install the LoadFile2 Protocol or not. With reference to the below spec i= tem, the LoadFile2 protocol must be implemented.

 

In one of the BIOS environment, the Setup Browser Lo= cates the LoadFile2 instance of Network Boot Device and it not found as it = not installed by the current NetworkPkg.

 

Can you please comment if there is any reason behind= not installing during the HTTP Boot.

=1B$B!H=1B(= BUEFI SPEC

2.6.3 Driver-S= pecific Elements There are a number of UEFI elements that can be added or r= emoved depending on the features that a specific driver requires. Drivers can be implemented by platform firmwar= e developers to support buses and devices in a specific platform. Drivers c= an also be implemented by add-in card vendors for devices that might be int= egrated into the platform hardware or added to a platform through an expansion slot. The following list inclu= des possible driver features, and the UEFI elements that are required for e= ach feature type:

  1. If a driver is written = for a boot device that is not a block-oriented device, a file system-based = device, or a console device, then the EFI_LOAD_FILE2_PROTOCOL must be imple= mented.

=1B$B!H=1B(B

 

Thanks

Siva

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