diff options
Diffstat (limited to 'src/arch/arm64/armv8/lib/sysctrl.c')
| -rw-r--r-- | src/arch/arm64/armv8/lib/sysctrl.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/arch/arm64/armv8/lib/sysctrl.c b/src/arch/arm64/armv8/lib/sysctrl.c index 9cf26a5c69..ef3b455b65 100644 --- a/src/arch/arm64/armv8/lib/sysctrl.c +++ b/src/arch/arm64/armv8/lib/sysctrl.c @@ -1059,3 +1059,11 @@ void raw_write_cntfrq_el0(uint32_t cntfrq_el0) { __asm__ __volatile__("msr CNTFRQ_EL0, %0\n\t" : : "r" ((uint64_t)cntfrq_el0) : "memory"); } + +uint64_t raw_read_cntpct_el0(void) +{ + uint64_t cntpct_el0; + + __asm__ __volatile__("mrs %0, CNTPCT_EL0\n\t" : "=r" (cntpct_el0) : : "memory"); + return cntpct_el0; +} |