Hi, Wim, Thank you for trying SBL and UEFI payload. In the use case you stated below, I think it might be better to add read-only UEFI variable support in SBL when UEFI payload is used. This can be done by porting UEFI PEI variable driver back into a SBL library. We will evaluate this to see if we can add this into open sourced SBL. Will keep you updated on this. Thanks Maurice From: Sbl-devel [mailto:sbl-devel-bounces@lists.01.org] On Behalf Of Wim Vervoorn Sent: Thursday, August 8, 2019 7:32 To: sbl-devel(a)lists.01.org Subject: [Sbl-devel] Support for UEFI variables Hello, I am working on a SBL implementation also using UEFI Payload. We have some parameters we want to be settable by the user. We can use the UEFI variables for that. To do this I either need to be able to access the LiteVariables from UEFI or the UEFI variables from SBL. Are there any plans to do this? Basically I only need read only access in SBL. Best Regards, Wim Vervoorn Eltan B.V. Ambachtstraat 23 5481 SM Schijndel The Netherlands T : +31-(0)73-594 46 64 E : wvervoorn@eltan.com<mailto:wvervoorn@eltan.com> W : http://www.eltan.com<http://www.eltan.com/> "THIS MESSAGE CONTAINS CONFIDENTIAL INFORMATION. UNLESS YOU ARE THE INTENDED RECIPIENT OF THIS MESSAGE, ANY USE OF THIS MESSAGE IS STRICTLY PROHIBITED. IF YOU HAVE RECEIVED THIS MESSAGE IN ERROR, PLEASE IMMEDIATELY NOTIFY THE SENDER BY TELEPHONE +31-(0)73-5944664 OR REPLY EMAIL, AND IMMEDIATELY DELETE THIS MESSAGE AND ALL COPIES."

Hello Sai, Thanks for getting back. This is a great add on and saves me the time to implement it myself. Best Regards, Wim Vervoorn Eltan B.V. Ambachtstraat 23 5481 SM Schijndel The Netherlands T : +31-(0)73-594 46 64 E : wvervoorn(a)eltan.com W : http://www.eltan.com<http://www.eltan.com/> "THIS MESSAGE CONTAINS CONFIDENTIAL INFORMATION. UNLESS YOU ARE THE INTENDED RECIPIENT OF THIS MESSAGE, ANY USE OF THIS MESSAGE IS STRICTLY PROHIBITED. IF YOU HAVE RECEIVED THIS MESSAGE IN ERROR, PLEASE IMMEDIATELY NOTIFY THE SENDER BY TELEPHONE +31-(0)73-5944664 OR REPLY EMAIL, AND IMMEDIATELY DELETE THIS MESSAGE AND ALL COPIES." From: Talamudupula, Sai Kiran [mailto:sai.kiran.talamudupula@intel.com] Sent: Tuesday, August 13, 2019 8:17 PM To: Wim Vervoorn <wvervoorn(a)eltan.com&gt;; sbl-devel(a)lists.01.org Subject: RE: Support for UEFI variables Hi Wim, We are currently working on getting the read-only access to UEFI variables from SBL. Will send out an email when the feature is ready and checked-in into the open source repo. Please let us know if you have any other questions/feedback. Thanks, Sai. From: Sbl-devel [mailto:sbl-devel-bounces@lists.01.org] On Behalf Of Ma, Maurice Sent: Thursday, August 8, 2019 8:36 AM To: Wim Vervoorn <wvervoorn@eltan.com<mailto:wvervoorn@eltan.com>>; sbl-devel@lists.01.org<mailto:sbl-devel@lists.01.org> Subject: Re: [Sbl-devel] Support for UEFI variables Hi, Wim, Thank you for trying SBL and UEFI payload. In the use case you stated below, I think it might be better to add read-only UEFI variable support in SBL when UEFI payload is used. This can be done by porting UEFI PEI variable driver back into a SBL library. We will evaluate this to see if we can add this into open sourced SBL. Will keep you updated on this. Thanks Maurice From: Sbl-devel [mailto:sbl-devel-bounces@lists.01.org] On Behalf Of Wim Vervoorn Sent: Thursday, August 8, 2019 7:32 To: sbl-devel@lists.01.org<mailto:sbl-devel@lists.01.org> Subject: [Sbl-devel] Support for UEFI variables Hello, I am working on a SBL implementation also using UEFI Payload. We have some parameters we want to be settable by the user. We can use the UEFI variables for that. To do this I either need to be able to access the LiteVariables from UEFI or the UEFI variables from SBL. Are there any plans to do this? Basically I only need read only access in SBL. Best Regards, Wim Vervoorn Eltan B.V. Ambachtstraat 23 5481 SM Schijndel The Netherlands T : +31-(0)73-594 46 64 E : wvervoorn@eltan.com<mailto:wvervoorn@eltan.com> W : http://www.eltan.com<http://www.eltan.com/> "THIS MESSAGE CONTAINS CONFIDENTIAL INFORMATION. UNLESS YOU ARE THE INTENDED RECIPIENT OF THIS MESSAGE, ANY USE OF THIS MESSAGE IS STRICTLY PROHIBITED. IF YOU HAVE RECEIVED THIS MESSAGE IN ERROR, PLEASE IMMEDIATELY NOTIFY THE SENDER BY TELEPHONE +31-(0)73-5944664 OR REPLY EMAIL, AND IMMEDIATELY DELETE THIS MESSAGE AND ALL COPIES."

Hello Sai, Thanks for the quick implementation. I haven't tried them yet but will sure do this. Best Regards, Wim Vervoorn From: Talamudupula, Sai Kiran [mailto:sai.kiran.talamudupula@intel.com] Sent: Friday, August 16, 2019 7:50 PM To: Wim Vervoorn <wvervoorn(a)eltan.com&gt;; sbl-devel(a)lists.01.org Subject: RE: Support for UEFI variables Hi all, UEFI Variable read support has been checked-in to the open source @: https://github.com/slimbootloader/slimbootloader/commit/f0b5eaf43ae20373c... Thanks, Sai. From: Wim Vervoorn [mailto:wvervoorn@eltan.com] Sent: Wednesday, August 14, 2019 3:16 AM To: Talamudupula, Sai Kiran <sai.kiran.talamudupula@intel.com<mailto:sai.kiran.talamudupula@intel.com>>; sbl-devel@lists.01.org<mailto:sbl-devel@lists.01.org> Subject: RE: Support for UEFI variables Hello Sai, Thanks for getting back. This is a great add on and saves me the time to implement it myself. Best Regards, Wim Vervoorn Eltan B.V. Ambachtstraat 23 5481 SM Schijndel The Netherlands T : +31-(0)73-594 46 64 E : wvervoorn@eltan.com<mailto:wvervoorn@eltan.com> W : http://www.eltan.com<http://www.eltan.com/> "THIS MESSAGE CONTAINS CONFIDENTIAL INFORMATION. UNLESS YOU ARE THE INTENDED RECIPIENT OF THIS MESSAGE, ANY USE OF THIS MESSAGE IS STRICTLY PROHIBITED. IF YOU HAVE RECEIVED THIS MESSAGE IN ERROR, PLEASE IMMEDIATELY NOTIFY THE SENDER BY TELEPHONE +31-(0)73-5944664 OR REPLY EMAIL, AND IMMEDIATELY DELETE THIS MESSAGE AND ALL COPIES." From: Talamudupula, Sai Kiran [mailto:sai.kiran.talamudupula@intel.com] Sent: Tuesday, August 13, 2019 8:17 PM To: Wim Vervoorn <wvervoorn@eltan.com<mailto:wvervoorn@eltan.com>>; sbl-devel@lists.01.org<mailto:sbl-devel@lists.01.org> Subject: RE: Support for UEFI variables Hi Wim, We are currently working on getting the read-only access to UEFI variables from SBL. Will send out an email when the feature is ready and checked-in into the open source repo. Please let us know if you have any other questions/feedback. Thanks, Sai. From: Sbl-devel [mailto:sbl-devel-bounces@lists.01.org] On Behalf Of Ma, Maurice Sent: Thursday, August 8, 2019 8:36 AM To: Wim Vervoorn <wvervoorn@eltan.com<mailto:wvervoorn@eltan.com>>; sbl-devel@lists.01.org<mailto:sbl-devel@lists.01.org> Subject: Re: [Sbl-devel] Support for UEFI variables Hi, Wim, Thank you for trying SBL and UEFI payload. In the use case you stated below, I think it might be better to add read-only UEFI variable support in SBL when UEFI payload is used. This can be done by porting UEFI PEI variable driver back into a SBL library. We will evaluate this to see if we can add this into open sourced SBL. Will keep you updated on this. Thanks Maurice From: Sbl-devel [mailto:sbl-devel-bounces@lists.01.org] On Behalf Of Wim Vervoorn Sent: Thursday, August 8, 2019 7:32 To: sbl-devel@lists.01.org<mailto:sbl-devel@lists.01.org> Subject: [Sbl-devel] Support for UEFI variables Hello, I am working on a SBL implementation also using UEFI Payload. We have some parameters we want to be settable by the user. We can use the UEFI variables for that. To do this I either need to be able to access the LiteVariables from UEFI or the UEFI variables from SBL. Are there any plans to do this? Basically I only need read only access in SBL. Best Regards, Wim Vervoorn Eltan B.V. Ambachtstraat 23 5481 SM Schijndel The Netherlands T : +31-(0)73-594 46 64 E : wvervoorn@eltan.com<mailto:wvervoorn@eltan.com> W : http://www.eltan.com<http://www.eltan.com/> "THIS MESSAGE CONTAINS CONFIDENTIAL INFORMATION. UNLESS YOU ARE THE INTENDED RECIPIENT OF THIS MESSAGE, ANY USE OF THIS MESSAGE IS STRICTLY PROHIBITED. IF YOU HAVE RECEIVED THIS MESSAGE IN ERROR, PLEASE IMMEDIATELY NOTIFY THE SENDER BY TELEPHONE +31-(0)73-5944664 OR REPLY EMAIL, AND IMMEDIATELY DELETE THIS MESSAGE AND ALL COPIES."