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Armv8: Initializing CNTVOFF_EL2

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Linux-arm64 require that CNTVOFF_EL2 should be programmed with
a consistent value on all cpus. Initializing CNTVOFF_EL2 at state
transition instead of start.S could prevent potential different value
on cpus if ATF exist and u-boot runs at only one cpu.

Signed-off-by: David Feng <fenghua@phytium.com.cn>
This commit is contained in:
David Feng 2015-03-02 15:29:34 +08:00 committed by Albert ARIBAUD
parent 81e9fe5a29
commit 148822d546
1 changed files with 3 additions and 0 deletions
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3
arch/arm/include/asm/macro.h
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@ -143,6 +143,9 @@ lr .req x30
mov \xreg1, #0x33ff
msr cptr_el2, \xreg1 /* Disable coprocessor traps to EL2 */
/* Initialize Generic Timers */
msr cntvoff_el2, xzr
/* Initialize SCTLR_EL2
*
* setting RES1 bits (29,28,23,22,18,16,11,5,4) to 1