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Merge pull request #206 from soby-mathew/sm/reset_cntvoff

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Reset CNTVOFF_EL2 register before exit into EL1 on warm boot
This commit is contained in:
Andrew Thoelke 2014-10-10 12:13:48 +01:00
commit d07baec4b5
2 changed files with 5 additions and 0 deletions
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3
bl31/context_mgmt.c
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@ -250,6 +250,9 @@ void cm_prepare_el3_exit(uint32_t security_state)
/* Enable EL1 access to timer */
write_cnthctl_el2(EL1PCEN_BIT | EL1PCTEN_BIT);
/* Reset CNTVOFF_EL2 */
write_cntvoff_el2(0);
/* Set VPIDR, VMPIDR to match MIDR, MPIDR */
write_vpidr_el2(read_midr_el1());
write_vmpidr_el2(read_mpidr_el1());

2
include/lib/aarch64/arch_helpers.h
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@ -262,6 +262,8 @@ DEFINE_SYSREG_RW_FUNCS(cnthctl_el2)
DEFINE_SYSREG_RW_FUNCS(tpidr_el3)
DEFINE_SYSREG_RW_FUNCS(cntvoff_el2)
DEFINE_SYSREG_RW_FUNCS(vpidr_el2)
DEFINE_SYSREG_RW_FUNCS(vmpidr_el2)