> - fuller implementation with more features
Is that a good thing? Didn't we just have a long discussion eschewing
a heavy-handed, bulky hand-off block design in favor of more simple
and flexible structures? I think simplicity is key for this and the
bl_aux_params are trying to be about as simple
Hi François,
On Thu, 15 Jul 2021 at 08:25, François Ozog
wrote:
>
>
> On Sat, 10 Jul 2021 at 01:07, Julius Werner wrote:
>
>> > - "bloblist" is a general term for concept of linked list and it's not
>> exactly U-boot implementation. The proposed solution will cause some degree
>> of changes in
On Sat, 10 Jul 2021 at 01:07, Julius Werner wrote:
> > - "bloblist" is a general term for concept of linked list and it's not
> exactly U-boot implementation. The proposed solution will cause some degree
> of changes in all the participating projects. For backward compatibility
> issue, we have
> - "bloblist" is a general term for concept of linked list and it's not
> exactly U-boot implementation. The proposed solution will cause some degree
> of changes in all the participating projects. For backward compatibility
> issue, we have already though about it and proposed to have build
Stuber
; Boot Architecture Mailman List
; undefined ; Harb
Abdulhamid OS ; Simon Glass
; Arjun Khare ; U-Boot Mailing
List ; t...@lists.trustedfirmware.org
; Paul Isaac's ; Ron
Minnich ; Moe Ammar ; Manish
Pandey2
Subject: Re: [TF-A] Proposal: TF-A to adopt hand-off blocks (HOBs) for
information pas
On Fri, Jul 09, 2021 at 09:05:09AM +0200, François Ozog wrote:
> Le ven. 9 juil. 2021 à 03:09, Julius Werner a écrit :
>
> > > Of course every project would like not to change...
> > >
> > > For TF-A I wonder whether it will/should in fact use devicetree if there
> > is a lot of complex data?
Le ven. 9 juil. 2021 à 03:09, Julius Werner a écrit :
> > Of course every project would like not to change...
> >
> > For TF-A I wonder whether it will/should in fact use devicetree if there
> is a lot of complex data? TBD, I suppose.
>
> Okay, sorry, now I'm a bit confused -- I thought the
> Of course every project would like not to change...
>
> For TF-A I wonder whether it will/should in fact use devicetree if there is a
> lot of complex data? TBD, I suppose.
Okay, sorry, now I'm a bit confused -- I thought the discussion in
this thread was about which parameter hand-off
Hi Julius,
On Thu, 8 Jul 2021 at 15:56, Julius Werner wrote:
> Thank you all for your feedback.
>>
>> It appears that in theory we are all happy with using bloblist with few
>> implementation details which needs to be taken care of during
>> implementation.
>>
>
> Just to clarify: are you using
>
> Thank you all for your feedback.
>
> It appears that in theory we are all happy with using bloblist with few
> implementation details which needs to be taken care of during
> implementation.
>
Just to clarify: are you using "bloblist" as a general term for the concept
of a simple linked list
TF-A.
>
>
> Re devicetree, how about we use bloblist for simple things, but use a
> devicetree (perhaps in the bloblist) once SDRAM is available. Blobs that
> were created pre-SDRAM can continue to be passed on, but anything created
> after SDRAM is available should use devicetr
OS ; Joanna Farley
; Madhukar Pappireddy ;
Manish Pandey2 ; Moe Ammar ;
Okash Khawaja ; Paul Isaac's ;
Ron Minnich ; U-Boot Mailing List ;
t...@lists.trustedfirmware.org
Subject: Re: [TF-A] Proposal: TF-A to adopt hand-off blocks (HOBs) for
information passing between boot stages
Le jeu.
Le lun. 21 juin 2021 à 12:32, Alexander Graf a écrit :
>
> On 20.05.21 18:42, Simon Glass wrote:
> > Hi,
> >
> > Re Jeremy's comment:
> >> Using DT to pass platform info at this level is sort of crazy on an ACPI
> >> machine which won't have native DTs. Meaning there is an additional
> >> level
On 20.05.21 18:42, Simon Glass wrote:
Hi,
Re Jeremy's comment:
Using DT to pass platform info at this level is sort of crazy on an ACPI
machine which won't have native DTs. Meaning there is an additional
level of unnecessary indirection that needs to be converted back into a
format which can
+Loic from ST for 32bits perspective.
Le ven. 18 juin 2021 à 19:17, Tom Rini a écrit :
> On Thu, Jun 17, 2021 at 04:45:48PM -0700, raghu.ncst...@icloud.com wrote:
>
> [snip]
> > I also think it is incorrect to partition platforms into what
> u-boot/linux boot/embdedded systems do and what
List ; Harb Abdulhamid OS <
> abdulha...@os.amperecomputing.com>; U-Boot Mailing List <
> u-boot@lists.denx.de>; Arjun Khare ;
> t...@lists.trustedfirmware.org; Paul Isaac's ;
> Ron Minnich ; Moe Ammar
> *Subject:* Re: [TF-A] Proposal: TF-A to adopt hand-off blocks (HOBs) f
On Thu, Jun 17, 2021 at 04:45:48PM -0700, raghu.ncst...@icloud.com wrote:
[snip]
> I also think it is incorrect to partition platforms into what u-boot/linux
> boot/embdedded systems do and what “UEFI/private code” does. UEFI is a huge
> part of the ARM eco-system and is being used fairly
Isaac's ; Ron
Minnich ; Moe Ammar
Subject: Re: [TF-A] Proposal: TF-A to adopt hand-off blocks (HOBs) for
information passing between boot stages
Le jeu. 17 juin 2021 à 21:38, Simon Glass mailto:s...@chromium.org> > a écrit :
Hi,
On Fri, 11 Jun 2021 at 05:52, Françoi
er SDRAM is available should use devicetree? This would ensure that
> complex structures use devicetree rather than C structs, which are of
> course harder to extend / describe.
>
+1
>
> Regards,
> Simon
>
>
>>
>>> Thanks
>>> Manish Pandey
>>> ---
t;; Simon Glass
>> *Cc:* Harb Abdulhamid OS ; Boot
>> Architecture Mailman List ; Ed
>> Stuber ; Arjun Khare <
>> akh...@amperecomputing.com>; U-Boot Mailing List ;
>> Paul Isaac's ; Ron Minnich ;
>> Moe Ammar ; t...@lists.trustedfirmware.org <
>> t..
e Mailman List ; Ed Stuber
> ; Arjun Khare ;
> U-Boot Mailing List ; Paul Isaac's <
> paul.isa...@linaro.org>; Ron Minnich ; Moe Ammar <
> m...@amperecomputing.com>; t...@lists.trustedfirmware.org <
> t...@lists.trustedfirmware.org>; Manish Pandey2
> *Subject:* R
, Moe Ammar
Subject: Re: [TF-A] Proposal: TF-A to adopt hand-off blocks (HOBs) for
information passing between boot stages
Hi Everyone,
The Manish Pandy and Madhukar Pappireddy of the TF-A team are planning to host
another TF-A Tech Forum this Thursday to continue the live discussion
Paul Isaac's ; Ron Minnich ; Moe
Ammar
Subject: Re: [TF-A] Proposal: TF-A to adopt hand-off blocks (HOBs) for
information passing between boot stages
Hi,
I tried to summarize the discussions in the previous TF-A tech forum
regarding the proposal to adopt Hand-off Block
okash.khaw...@gmail.com>; Simon Glass
> Cc: Harb Abdulhamid OS ; Boot
> Architecture Mailman List ; Ed Stuber
> ; Arjun Khare ;
> U-Boot Mailing List ; t...@lists.trustedfirmware.org;
> Paul Isaac's ; Ron Minnich ;
> Moe Ammar
> Subject: Re: [TF-A] Proposal: TF-A to adopt
gt;>
>> https://zoom.us/j/9159704974
>>
>>
>>
>> Meeting ID: 915 970 4974
>>
>>
>>
>> One tap mobile
>>
>> +16465588656,,9159704974# US (New York)
>>
al Message-
> From: TF-A On Behalf Of Joanna
> Farley via TF-A
> Sent: Sunday, May 16, 2021 5:19 AM
> To: Okash Khawaja ; Simon Glass >
> Cc: Harb Abdulhamid OS ; Boot
> Architecture Mailman List ;
> t...@lists.trustedfirmware.org; Ed Stuber ;
> Arjun Khare ; U-Boot Mailing List <
>>
> > >> Bill Fletcher- creator
> > >>
> > >> •
> > >>
> > >> t...@lists.trustedfirmware.org
> > >>
> > >> more details »
> > >>
> >
st ; Paul Isaac's
; Ron Minnich ; Moe Ammar
Subject: Re: [TF-A] Proposal: TF-A to adopt hand-off blocks (HOBs) for
information passing between boot stages
Apologies I failed with the recording. Manish/Madhu will reply early next week
with the slides and some notes to help with a follow up session
9159704974
>>
>>
>>
>> Meeting ID: 915 970 4974
>>
>>
>>
>> One tap mobile
>>
>> +16465588656,,9159704974# US (New York)
>>
>> +16699009128,,9159704974# US (San Jose)
oot
Architecture Mailman List ;
t...@lists.trustedfirmware.org; Ed Stuber ; Arjun
Khare ; U-Boot Mailing List ;
Paul Isaac's ; Ron Minnich ; Moe
Ammar
Subject: Re: [TF-A] Proposal: TF-A to adopt hand-off blocks (HOBs) for
information passing between boot stages
Apologies I failed with the recor
ul Isaac's ; Ron Minnich ; Moe
Ammar
Subject: Re: [TF-A] Proposal: TF-A to adopt hand-off blocks (HOBs) for
information passing between boot stages
Hi,
I tried to summarize the discussions in the previous TF-A tech forum
regarding the proposal to adopt Hand-off Blocks (HOBs) f
>>
>> Thanks,
>>
>> --Harb
>>
>>
>>
>> From: Manish Pandey2
>> Sent: Friday, April 30, 2021 8:14 AM
>> To: François Ozog
>> Cc: Simon Glass ; Julius Werner
; Harb Abdulhamid OS ;
Boot Archite
> Thanks,
>>
>> --Harb
>>
>>
>>
>> From: Manish Pandey2
>> Sent: Friday, April 30, 2021 8:14 AM
>> To: François Ozog
>> Cc: Simon Glass ; Julius Werner ;
>> Harb Abdulhamid OS ; Boot Architecture
>> Mailman List ;
>> t...
Minnich
Subject: Re: [TF-A] Proposal: TF-A to adopt hand-off blocks (HOBs) for
information passing between boot stages
Hi All,
Please find invite for next TF-A Tech Forum session to continue our discussions
on HOB implementation, feel free to forward it to others.
The next TF-A Tech Forum
; *Sent:* Friday, April 30, 2021 8:14 AM
> *To:* François Ozog
> *Cc:* Simon Glass ; Julius Werner ;
> Harb Abdulhamid OS ; Boot Architecture
> Mailman List ;
> t...@lists.trustedfirmware.org; U-Boot Mailing List ;
> Paul Isaac's ; Ron Minnich
> *Subject:* Re: [TF-A] Proposal: T
>
Sent: Tuesday, March 23, 2021 10:00 AM
To: François Ozog mailto:francois.o...@linaro.org>>;
Ron Minnich mailto:rminn...@google.com>>; Paul Isaac's
mailto:paul.isa...@linaro.org>>
Cc: Simon Glass mailto:s...@chromium.org>>; Harb Abdulhamid
OS
mailto:abdulha...@os.am
Hi,
I promised to send my summary of Trusted Substrate architecture council
call on HOBs, here it is:
Topics where there seem to be consensus
- Scope include diverse firmware flows (U-Boot/SPL, TFA, CoreBoot…) on
difference architectures (Arm, RiscV)
- Definitions: The Hand Over
...@lists.trustedfirmware.org; U-Boot Mailing List ;
Paul Isaac's ; Ron Minnich
Subject: Re: [TF-A] Proposal: TF-A to adopt hand-off blocks (HOBs) for
information passing between boot stages
Hi,
From TF-A project point of view, we prefer to use existing mechanism to pass
parameters across boot
> These structures we are talking about may not be defined by the SiP, and
just saying we have SiP specific tags is not good enough.
There is enough room in 64-bits to create separate tag spaces for every
kind of category you can think of. (In fact, we could also just let every
vendor allocate
> From: Simon Glass
> Date: Fri, 9 Apr 2021 06:19:08 +1200
>
> Here are a few thoughts on UUIDs.
> Why a UUID/GUID is probably not the answer
>
> sjg, 30-Mar-21
> Code is for humans
>
> Code should be readable, so far as possible.
>
> This is not readable:
>
> #define
gt;
>
>
> Hopefully we can try to sort things out at the next opportunity.
>
>
>
> Thanks,
>
> --Harb
>
>
>
> *From:* Manish Pandey2
> *Sent:* Thursday, April 8, 2021 7:56 AM
> *To:* Simon Glass ; Julius Werner
> *Cc:* Harb Abdulhamid OS ; Boot
&g
all today.
>
> Thanks
> Manish P
>
> --
> *From:* TF-A on behalf of Julius
> Werner via TF-A
> *Sent:* 25 March 2021 02:43
> *To:* Simon Glass
> *Cc:* Harb Abdulhamid OS ; Boot
> Architecture Mailman List ;
> t...@lists.truste
on Minnich
Subject: Re: [TF-A] Proposal: TF-A to adopt hand-off blocks (HOBs) for
information passing between boot stages
Just want to point out that TF-A currently already supports a (very simple)
mechanism like this:
https://review.trustedfirmware.org/plugins/gitiles/TF-A/trusted-firmware-a/+/refs/he
r systems!
Thanks
Raghu
From: Julius Werner
Sent: Monday, March 29, 2021 4:48 PM
To: raghu.ncst...@icloud.com
Cc: Julius Werner ; Simon Glass ; Harb
Abdulhamid OS ; Boot Architecture Mailman
List ; U-Boot Mailing List
; Paul Isaac's ; Ron Minnich
Subject: Re: [TF-A] Proposal: TF-A
Hi Raghu,
> It appears there are opinions you carry around UUID being complicated,
> bloated, code being an eyesore, parsing these lists early with MMU/Caches
> disabled, calculating checksums etc. While there is certainly a LOT of
> truth to those statements, these concerns need to be put into
Hi Grant,
On Mon, 29 Mar 2021 at 23:19, Grant Likely wrote:
>
>
>
> On 29/03/2021 08:42, Simon Glass wrote:
> > Hi Raghu,
> >
> > On Sat, 27 Mar 2021 at 03:59, wrote:
> >
> >> Julius, Simon,
> >>
> >>
> >>
> >> It appears there are opinions you carry around UUID being complicated,
> >>
On 29/03/2021 08:42, Simon Glass wrote:
> Hi Raghu,
>
> On Sat, 27 Mar 2021 at 03:59, wrote:
>
>> Julius, Simon,
>>
>>
>>
>> It appears there are opinions you carry around UUID being complicated,
>> bloated, code being an eyesore, parsing these lists early with
MMU/Caches
>> disabled,
>
>
> Thanks
>
> Raghu
>
>
>
> *From:* TF-A *On Behalf Of *Julius
> Werner via TF-A
> *Sent:* Wednesday, March 24, 2021 7:44 PM
> *To:* Simon Glass
> *Cc:* Harb Abdulhamid OS ; Boot
> Architecture Mailman List ;
> t...@lists.trustedfirmware.org; U-Boot Maili
; Ron Minnich
Subject: Re: [TF-A] Proposal: TF-A to adopt hand-off blocks (HOBs) for
information passing between boot stages
Just want to point out that TF-A currently already supports a (very simple)
mechanism like this:
https://review.trustedfirmware.org/plugins/gitiles/TF-A/trusted
guid_to_name(const efi_guid_t *guid)
> {
> struct guid_name *entry;
>
>for (entry = guid_name; entry->name; entry++) {
> if (!guidcmp(guid, >guid))
> return entry->name;
>}
>
>return NULL;
> }
>
> Believe it or not it took a fair b
during the call… but again, boblist seems like a reasonable starting point
> as an alternative to HOB.
>
Indeed. There is certainly value in both approaches.
Regards,
Simon
>
>
> Thanks,
>
> --Harb
>
>
>
> *From:* François Ozog
> *Sent:* Tuesday,
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