Re: DT handling, [Ref Linux-Efi]

2018-04-30 Thread Rob Herring
On Fri, Apr 27, 2018 at 4:39 PM, Alexander Graf wrote: > Hi Rob, > > On 27.04.18 18:40, Rob Herring wrote: >> On Fri, Apr 27, 2018 at 2:47 AM, Alexander Graf wrote: >>> >>> >>> On 27.04.18 08:24, Udit Kumar wrote: Hi There is bit of discussion on linux-efi too , to handle DT update

Re: DT handling, [Ref Linux-Efi]

2018-04-30 Thread William Mills
On 04/29/2018 11:36 PM, Chang, Abner (HPS SW/FW Technologist) wrote: > Some thoughts, > >> -Original Message- >> From: arm.ebbr-discuss-boun...@arm.com [mailto:arm.ebbr-discuss- >> boun...@arm.com] On Behalf Of Udit Kumar >> Sent: Saturday, April 28, 2018 4:07 PM >> To: Alexander Graf ;

Re: [Arm.ebbr-discuss] ebbr: boot behaviour without persistent variables

2018-04-30 Thread William Mills
On 04/30/2018 10:26 AM, Chang, Abner (HPS SW/FW Technologist) wrote: >> On 30 April 2018 at 16:00, Ard Biesheuvel wrote: >>> On 30 April 2018 at 15:57, Chang, Abner (HPS SW/FW Technologist) >> Also, eMMC controllers (which are more widely used on mobile platforms as >> the only available storage

RE: [Arm.ebbr-discuss] ebbr: boot behaviour without persistent variables

2018-04-30 Thread Chang, Abner (HPS SW/FW Technologist)
> -Original Message- > From: Ard Biesheuvel [mailto:ard.biesheu...@linaro.org] > Sent: Monday, April 30, 2018 10:02 PM > To: Chang, Abner (HPS SW/FW Technologist) > Cc: Daniel Thompson ; Grant Likely > ; Architecture Mailman List architect...@lists.linaro.org>; arm.ebbr-disc...@arm.com

Re: [Arm.ebbr-discuss] ebbr: boot behaviour without persistent variables

2018-04-30 Thread Ard Biesheuvel
On 30 April 2018 at 16:00, Ard Biesheuvel wrote: > On 30 April 2018 at 15:57, Chang, Abner (HPS SW/FW Technologist) > wrote: >> Hi Ard, >> >>> -Original Message- >>> From: Ard Biesheuvel [mailto:ard.biesheu...@linaro.org] >>> Sent: Sunday, April 29, 2018 12:21 AM >>> To: Chang, Abner (HPS

Re: [Arm.ebbr-discuss] ebbr: boot behaviour without persistent variables

2018-04-30 Thread Ard Biesheuvel
On 30 April 2018 at 15:57, Chang, Abner (HPS SW/FW Technologist) wrote: > Hi Ard, > >> -Original Message- >> From: Ard Biesheuvel [mailto:ard.biesheu...@linaro.org] >> Sent: Sunday, April 29, 2018 12:21 AM >> To: Chang, Abner (HPS SW/FW Technologist) >> Cc: Daniel Thompson ; Grant Likely

RE: [Arm.ebbr-discuss] ebbr: boot behaviour without persistent variables

2018-04-30 Thread Chang, Abner (HPS SW/FW Technologist)
Hi Ard, > -Original Message- > From: Ard Biesheuvel [mailto:ard.biesheu...@linaro.org] > Sent: Sunday, April 29, 2018 12:21 AM > To: Chang, Abner (HPS SW/FW Technologist) > Cc: Daniel Thompson ; Grant Likely > ; Architecture Mailman List architect...@lists.linaro.org>; l...@cam-list1.cam

RE: DT handling, [Ref Linux-Efi]

2018-04-30 Thread Chang, Abner (HPS SW/FW Technologist)
Some thoughts, > -Original Message- > From: arm.ebbr-discuss-boun...@arm.com [mailto:arm.ebbr-discuss- > boun...@arm.com] On Behalf Of Udit Kumar > Sent: Saturday, April 28, 2018 4:07 PM > To: Alexander Graf ; William Mills > Cc: boot-architecture@lists.linaro.org; n...@arm.com; Rod Dorri

Re: [Arm.ebbr-discuss] ebbr: boot behaviour without persistent variables

2018-04-30 Thread Ard Biesheuvel
On 28 April 2018 at 15:46, Chang, Abner (HPS SW/FW Technologist) wrote: > I am behind this topic and not familiar with embedded system with U-boot. > Some dumb questions below. > Why there is no persistent storage on platform? I thought at least EEPROM is > on platform. Can't EEPROM be the varst

RE: [Arm.ebbr-discuss] ebbr: boot behaviour without persistent variables

2018-04-30 Thread Chang, Abner (HPS SW/FW Technologist)
I am behind this topic and not familiar with embedded system with U-boot. Some dumb questions below. Why there is no persistent storage on platform? I thought at least EEPROM is on platform. Can't EEPROM be the varstore for EFI variable? Or EEPROM is not allowed to write when during runtime? If

RE: Question about EBBR

2018-04-30 Thread Chang, Abner (HPS SW/FW Technologist)
Understand now, thanks Dong, Daniel and Grant. That is the UEFI U-Boot port for embedded system. edk2 is not the only implementation for UEFI on embedded system segment. Thanks -Original Message- From: Grant Likely [mailto:grant.lik...@arm.com] Sent: Friday, April 27, 2018 6:03 PM To: