Am 2022-01-07 12:58, schrieb Lucas Stach:
Am Freitag, dem 07.01.2022 um 12:47 +0100 schrieb Michael Walle:
Hi Rouven,
Am 2022-01-07 10:46, schrieb Rouven Czerwinski:
.. since AFAIK i.MX8M* can not be run without TF-A.
Are you sure? There probably aren't any boards out there without TF-A, but why shouldn't it work without it?
PSCI, i.e. the only means to start the secondary CPUs, is implemented in TF-A, so it's very unlikely that anyone would want to run a system without TF-A. Also quite a bit of the lowlevel SoC initialization is implemented in TF-A.
Doesn't mean u-boot cannot implement PSCI; actually you doesn't need it at all, you can still use spin tables. I just keep hearing the same arguments for the LS1028A SoC and yet there is one board without TF-A ;) Anyway, I admit it's rather unlikely.
-michael