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| author | David Feng <fenghua@phytium.com.cn> | 2015-03-02 15:29:34 +0800 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2015-04-16 11:27:15 +0200 |
| commit | 148822d5464b99f4996d6aa8891013b7929c50dc (patch) | |
| tree | 19ba508bfdfa9a6726152383c8f519fc6865b486 | |
| parent | 81e9fe5a29880d7af75702291ab0f36ed5a1b054 (diff) | |
| download | u-boot-imx-148822d5464b99f4996d6aa8891013b7929c50dc.zip u-boot-imx-148822d5464b99f4996d6aa8891013b7929c50dc.tar.gz u-boot-imx-148822d5464b99f4996d6aa8891013b7929c50dc.tar.bz2 | |
Armv8: Initializing CNTVOFF_EL2
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>
| -rw-r--r-- | arch/arm/include/asm/macro.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/include/asm/macro.h b/arch/arm/include/asm/macro.h index 3cf3307..9bb0efa 100644 --- a/arch/arm/include/asm/macro.h +++ b/arch/arm/include/asm/macro.h @@ -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 |