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2023 22:33:50 +0000 From: "Natalya Kalistratova via groups.io" To: "Kasbekar, Saloni" , Sivaraman Nainar , "devel@edk2.groups.io" , "Clark-williams, Zachary" CC: Dhanaraj V , Santhosh Kumar V , =?iso-2022-jp?B?R2VuZ1lvdSBaaG91ICgbJEI8fjkuTSQbKEIp?= , Triveni H , Vairalakshmi M 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: AQHaL0nyaXZ0vEPynEWG6gD010i2ALCvfgwAgACzx4CAAV2tgIABOU4w Date: Wed, 20 Dec 2023 22:33:50 +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: DS7PR10MB5167:EE_|MN0PR10MB5984:EE_ x-ms-office365-filtering-correlation-id: 621b263b-92a5-4e6f-3b3e-08dc01abbd6f x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam-message-info: 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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_DS7PR10MB516729203E504C3B0658C0CED596ADS7PR10MB5167namp_ Content-Type: text/plain; charset="iso-2022-jp" Content-Transfer-Encoding: quoted-printable Including Triveni and Vairalakshmi to this thread From: Kasbekar, Saloni Sent: Tuesday, December 19, 2023 10:46 PM To: Sivaraman Nainar ; devel@edk2.groups.io; Clark-will= iams, Zachary Cc: Natalya Kalistratova ; Dhanaraj V = ; Santhosh Kumar V ; GengYou Zhou (=1B$B<~9.M$=1B(B= ) Subject: RE: [EXTERNAL] RE: Clarification on LoadFile2 Protocol Installatio= n for Network Boot Devices Hi Siva, We can file a Mantis for the UEFI forum with the proposal to update the wor= ding for #18 to include Network devices. Thanks, Saloni From: Sivaraman Nainar > Sent: Monday, December 18, 2023 10:54 PM To: Kasbekar, Saloni >; devel@edk2.groups.io; Clark-williams,= Zachary > Cc: Natalya Kalistratova >; Dhana= raj V >; Santhosh Kumar V >; GengYou Zhou (=1B$B<~9.= M$=1B(B) > Subject: RE: [EXTERNAL] RE: Clarification on LoadFile2 Protocol Installatio= n for Network Boot Devices 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-williams, Zachary > Cc: Natalya Kalistratova >; Dhana= raj 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= . -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 (#112916): https://edk2.groups.io/g/devel/message/112916 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_DS7PR10MB516729203E504C3B0658C0CED596ADS7PR10MB5167namp_ Content-Type: text/html; charset="iso-2022-jp" Content-Transfer-Encoding: quoted-printable

Including Triveni and Va= iralakshmi to this thread

 =

From: Kasbekar, Saloni <salon= i.kasbekar@intel.com>
Sent: Tuesday, December 19, 2023 10:46 PM
To: Sivaraman Nainar <sivaramann@ami.com>; devel@edk2.groups.i= o; 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: RE: [EXTERNAL] RE: Clarification on LoadFile2 Protocol Inst= allation for Network Boot Devices

 

Hi Siva,

 

We can file a Mantis for the UEFI forum w= ith the proposal to update the wording for #18 to include Network devices.<= /span>

 

Thanks,

Saloni

 

From: Sivaraman Nainar <sivaramann@ami.com<= /a>>
Sent: Monday, December 18, 2023 10:54 PM
To: Kasbekar, Saloni <saloni.kasbekar@intel.com= >; ; Clark-williams, Zachary <zachary.clark-williams@intel.com= >
Cc: Natalya Kalistratova <NatalyaK@ami.com>; Dhanaraj V <vdhanaraj@ami.com&g= t;; Santhosh Kumar V <santhoshkumarv@ami.com>; GengYou Zhou (=1B$B<~9.M$= =1B(B) <GengYouZhou@ami.com= >
Subject: RE: [EXTERNAL] RE: Clarification on LoadFile2 Protocol Inst= allation for Network Boot Devices

 

Hello Sal= oni:

 

Thanks fo= r Clarifying.

 

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?

 

Thanks

Siva

From: Kasbekar, Saloni <saloni.kasbekar@int= el.com>
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 <vdhanaraj@ami.com&g= t;; Santhosh Kumar V <santhoshkumarv@ami.com>; GengYou 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

=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.gro= ups.io; Clark-williams, Zachary <zachary.clark-williams@intel.com>; Kasbekar, Saloni <<= span style=3D"font-family:"Calibri",sans-serif;mso-ligatures:none= ">saloni.kasbekar@intel.com>
Cc: Natalya Kalistratova <NatalyaK@ami.com>; Dhanaraj V <vdhanaraj@ami.com>; Santhosh Kumar V <s= anthoshkumarv@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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