Peter Hoyes c48fec6e7c armv8: Initialize CNTFRQ if at highest exception level ... CNTFRQ_EL0 is only writable from the highest supported exception level on the platform. For Armv8-A, this is typically EL3, but technically EL2 and EL3 are optional so it may need to be initialized at EL2 or EL1. For Armv8-R, the highest exception level is always EL2. This patch moves the initialization outside of the switch_el block and uses a new macro branch_if_not_highest_el which dynamically detects whether it is at the highest supported exception level. Linux's docs state that CNTFRQ_EL0 should be initialized by the bootloader. If not set, the the U-Boot prompt countdown hangs. Signed-off-by: Peter Hoyes <Peter.Hoyes@arm.com>		2021-07-23 18:53:46 -04:00
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asm	armv8: Initialize CNTFRQ if at highest exception level	2021-07-23 18:53:46 -04:00
debug	SPDX: Convert all of our single license tags to Linux Kernel style	2018-05-07 09:34:12 -04:00