Subject: Re: [PATCH 00/17] (no cover subject)
On 11/4/24 1:20 PM, Peng Fan wrote:
Subject: Re: [PATCH 00/17] (no cover subject)
On 10/16/24 9:17 AM, Alice Guo wrote:
This patch set adds the basic support of i.MX95 and has been
tested
on
i.MX95 19x19 EVK.
I have a somewhat more generic question -- can we start U-Boot SPL and U-Boot first, and start the ELE/OpTee/... whatever firmwares AFTER U-Boot has started, so they can be updated just like the
kernel
can be updated ?
ELE Firmware packed in flash.bin is used by ROM, out of control of SPL/U-Boot.
Used by ROM how ? Details please ?
ELE Firmware is for secure enclave usage. 8ULP/93 also has it. I could not share more details.
OP-Tee is optional, but if it is there, it could only be loaded by SPL and kicked by ATF
Why ? U-Boot running in EL3 can start OpTee OS, so what is the problem ?
Ah. As we know there is a wrapper in ATF controlled with spd_optee. Technically let uboot in EL3 to kick optee is feasible, but I am not sure people would do this.
Regards, Peng.