ARMv8-A Architecture Reference Manual written
An EL1 physical timer.
An EL2 physical timer.
An EL3 physical timer.
A virtual timer.
but, Cortea-A53 Technical Reference Manual written
A Non-secure EL1 physical timer.
A Secure EL1 physical timer.
A Non-secure EL2 physical timer.
"An EL1 physical timer" is "A Non-secure EL1 physical timer."?
"An EL3 physical timer" is "A Secure EL1 physical timer" ?
or just like armv7-a,
"A Non-secure EL1 physical timer"/"A Secure EL1 physical timer" is banked.
and It is An EL1 physical timer?
"An EL1 physical timer" is "A Non-secure EL1 physical timer."?"An EL3 physical timer" is "A Secure EL1 physical timer" ?
Yes, and it's unfortunate that the two docs don't use consistent names. I'll report this to our docs group.
NOTE: What the Architecture Reference Manual describes as "EL3 physical timer" can be configured to be accessible from S.EL1. Controlled by SCR_EL3.ST. I suspect that is where the confusion is naming came from.
Thanks so much.
I understand it.
It is too confusing.