Hello all,
I need to load Bl2 boot image file from emmc interface from 'Synopsys DesignWare Cores Mobile Storage Host Controller'. I can see an existing emmc driver for synopsis controller but it seems to have only support SDMA mode and not ADMA2 and ADMA3 modes.
https://github.com/ARM-software/arm-trusted-firmware/blob/master/drivers/sy…
Is my understanding correct. Is there a specific reason why ADMA2/3 modes are not supported in existing driver. Any plan to update them soon?
I can see adma2/3 mode support available in Linux driver though.
https://github.com/torvalds/linux/blob/master/drivers/mmc/host/sdhci-of-dwc…
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Title: TF-A Tech Forum (additional)
I'm creating an additional TF-A Techforum this week as we have a batch of
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forum pagesThis week we would like to present on: Arm CCA RMM
<-> EL3 interfacePresenter : Javier Almansa Sobrino Description:
Covering the communication interface between RMM and EL3. This comprises of
the Boot Interface and the RMM-EL3 runtime interface.Patches under review.
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Hi,
Thanks for the detailed documentation about how to enable RME in tf-a. I try to replace the tftf.bin with the normal boot firmware (edk2) to load the Linux in the normal world, but it fails. The log message from terminal_0 is shown below:
INFO: RMM init start.
INFO: RMM init end.
INFO: BL31: Preparing for EL3 exit to normal world
INFO: Entry point address = 0x88000000
INFO: SPSR = 0x3c9
I found a possible solution from the archives:
[https://lists.trustedfirmware.org/archives/list/tf-a@lists.trustedfirmware.…].
I try to modify the dts file under edk2-platform/Platform/ARM/VExpressPkg/DeviceTree/ to change the DDR memory range, which is similar to the modification for RME in [https://github.com/ARM-software/arm-trusted-firmware/blob/master/fdts/fvp-b…], but it does not solve the problem.
So, how can I boot Linux in the normal world with RME enabled?
Thanks,
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TF-A Tech Forum
Thursday Jun 30, 2022 ⋅ 4pm – 5:30pm
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Extending next week to 90 minutes as we will have two topics we hope to
cover this week. More details nearer the time but the topics will
cover the SPMC@EL3 recently released in v2.7 and some un related DRTM work
to be released soon.Session will be recorded and shared as previous
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This event has been canceled with a note:
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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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