refactor(qemu): do not hardcode counter frequency
From QEMU change:
> In previous versions of the Arm architecture, the frequency of the
> generic timers as reported in CNTFRQ_EL0 could be any IMPDEF value,
> and for QEMU we picked 62.5MHz, giving a timer tick period of 16ns.
> In Armv8.6, the architecture standardized this frequency to 1GHz.
This change stops TF-A from hardcoding 62.5MHz frequency. Instead value
stored in CNTFRQ_EL0 would be used. As a result we get 62.5MHz on older
cores and 1GHz on newer ones.
Change-Id: I7d414ce6d3708e598bbb5a6f79eb2d4ec8e15ac4
Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
3 files changed