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Dec 2023 06:54:26 +0000 From: "Sivaraman Nainar via groups.io" To: "Kasbekar, Saloni" , "devel@edk2.groups.io" , "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: [EXTERNAL] RE: Clarification on LoadFile2 Protocol Installation for Network Boot Devices Thread-Index: AQHaL0nwlX1TCNDXtUGv2lauB4QO4LCve2SggAC2CTA= Date: Tue, 19 Dec 2023 06:54:25 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-publictraffictype: Email x-ms-traffictypediagnostic: CH0PR10MB4988:EE_|PH7PR10MB6484:EE_ x-ms-office365-filtering-correlation-id: e1b8a419-59ed-4749-42b5-08dc005f56d8 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam-message-info: 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X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 27e97857-e15f-486c-b58e-86c2b3040f93 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: J7FBt8ruyiTojrKl7OZZ65SD1zrtVcscqlPiIom61PDiaIpNtQxSgJR0P7fOOZXVJ2vRSX9fcQ4YkitU5yuv1Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR10MB6484 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,sivaramann@ami.com List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: YeQMgFDwb4oF7CBALkNnblyIx7686176AA= Content-Language: en-US Content-Type: multipart/alternative; boundary="_000_CH0PR10MB49881334961B520256C6EE0DC297ACH0PR10MB4988namp_" X-GND-Status: LEGIT Authentication-Results: spool.mail.gandi.net; dkim=pass header.d=groups.io header.s=20140610 header.b=b5DqxeEr; arc=reject ("signature check failed: fail, {[1] = sig:microsoft.com:reject}"); dmarc=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_CH0PR10MB49881334961B520256C6EE0DC297ACH0PR10MB4988namp_ Content-Type: text/plain; charset="iso-2022-jp" Content-Transfer-Encoding: quoted-printable Hello Saloni: Thanks for Clarifying. Yes. If Network Devices MUST install LoadFile2 then it would be good that s= ection 18 includes network devices. Do we need to request UEFI forum for th= e same? Thanks Siva From: Kasbekar, Saloni Sent: Tuesday, December 19, 2023 1:41 AM To: devel@edk2.groups.io; Sivaraman Nainar ; Clark-will= iams, Zachary Cc: Natalya Kalistratova ; Dhanaraj V = ; Santhosh Kumar V ; GengYou Zhou (=1B$B<~9.M$=1B(B= ) Subject: [EXTERNAL] RE: Clarification on LoadFile2 Protocol Installation fo= r Network Boot Devices **CAUTION: The e-mail below is from an external source. Please exercise cau= tion before opening attachments, clicking links, or following guidance.** 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 Nainar via groups.i= o Sent: Friday, December 15, 2023 3:29 AM To: devel@edk2.groups.io; Clark-williams, Zach= ary >; Kasbekar, Saloni > Cc: Natalya Kalistratova >; Dhana= raj 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= . -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 (#112699): https://edk2.groups.io/g/devel/message/112699 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_CH0PR10MB49881334961B520256C6EE0DC297ACH0PR10MB4988namp_ Content-Type: text/html; charset="iso-2022-jp" Content-Transfer-Encoding: quoted-printable

Hello Sal= oni:

&nbs= p;

Thanks fo= r Clarifying.

&nbs= p;

Yes. If N= etwork Devices MUST install LoadFile2 then it would be good that section 18= includes network devices. Do we need to request UEFI forum for the same?

&nbs= p;

Thanks

Siva=

From: Kasbekar, Saloni <saloni.kasbekar@intel.com&= gt;
Sent: Tuesday, December 19, 2023 1:41 AM
To: devel@edk2.groups.io; Sivaraman Nainar <sivaramann@ami.com>= ;; Clark-williams, Zachary <zachary.clark-williams@intel.com>
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: [EXTERNAL] RE: Clarification on LoadFile2 Protocol Installa= tion for Network Boot Devices

 

 

**CAUTION: The e-mail below is from an external source. Please exercise caution before opening attachments, clicking links= , or following guidance.**

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 <devel@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> Cc: Natalya Kalistratova <Nat= alyaK@ami.com>; Dhanaraj V <= vdhanaraj@ami.com>; Santhosh Kumar V <santhoshkumarv@ami.com>; GengYou 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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