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TF-A Tech Forum
Thursday Jun 16, 2022 ⋅ 4pm – 5pm
United Kingdom Time
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Hi,
I'm currently working on porting TFA to our upcoming SOC.
We plan to support Measured boot using external I2C TPM module.
I'm wondering about the implementation of that in BL1.
Do you think that I need to write the measurements directly to the I2C
module in BL1 ?
I'm asking because I would like to have the least source of problems
in BL1 which I can't upgrade.
I thought of storing the measurements in secure RAM and perhaps copy later.
Would love to hear your thoughts.
PS.
Actually I would love to have the option to choose to implement TPM
also in SW (fTPM using optee - as was done in the POC).
I think that if I store the measurement of BL2 in secure RAM I can
later change the specific TPM while upgrading only BL2/BL31...
Thanks,
Ramon
Hello Yann,
Hello Pascal,
I've tried booting v2.7-rc0 on the lxa-mc1 and TF-A panics:
NOTICE: CPU: STM32MP157C?? Rev.B
NOTICE: Model: Linux Automation MC-1 board
ERROR: regul ldo3: max value 750 is invalid
PANIC at PC : 0x2ffeebb7
because the driver takes great offense at the content of the device
tree. The parts in question were copy-pasted from ST DTs, but those
ST DTs were fixed by commit 67d95409baae
("refactor(stm32mp1-fdts): update regulator description").
I can understand ST hesistancy to touch device trees of 'unofficial' boards,
but I would appreciate that new features then, such as this regulator sanity
checking, be made optional and off by default to not needlessly break other
boards.
Thanks,
Ahmad
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This event has been canceled with this note:
"Public holiday in the UK so cancelling with week."
Title: TF-A Tech Forum
We run an open technical forum call for anyone to participate and it is not
restricted to Trusted Firmware project members. It will operate under the
guidance of the TF TSC. Feel free to forward this invite to
colleagues. Invites are via the TF-A mailing list and also published on the
Trusted Firmware website. Details are
here: https://www.trustedfirmware.org/meetings/tf-a-technical-forum/Tr…
Firmware is inviting you to a scheduled Zoom meeting.Join Zoom
Meetinghttps://zoom.us/j/9159704974Meeting ID: 915 970 4974One tap
mobile+16465588656,,9159704974# US (New York)+16699009128,,9159704974# US
(San Jose)Dial by your location +1 646 558
8656 US (New York) +1 669 900
9128 US (San Jose) 877 853 5247 US
Toll-free 888 788 0099 US Toll-freeMeeting ID:
915 970 4974Find your local
number: https://zoom.us/u/ad27hc6t7h
When: Thu Jun 2, 2022 4pm – 5pm United Kingdom Time
Calendar: tf-a(a)lists.trustedfirmware.org
Who:
* Bill Fletcher - creator
* marek.bykowski(a)gmail.com
* okash.khawaja(a)gmail.com
* tf-a(a)lists.trustedfirmware.org
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We are using an arm ARCH-64 (A55) and we need to do some floating point math in BL2. It seems this is not enabled. Is there a reason why I cannot do FP math (security issue?) and if I can, how do I enable it?
I am seeing this error when I use floats "-mgeneral-regs-only"
thanks
hi,
I has quality engineer from china.
I would to start study the Arm profile-A trustedfirmware and try to test it.
I has read trustedfirmware documetion ,
From the Processes & policies Chap about CI part. "https://trustedfirmware-a.readthedocs.io/en/latest/process/contributing.htm… "
Find ATF has Coverity Scan and test image build.
but I would to know, trustedfirmware-a whether has unit test part in the code level quality check.
Brs
Tony