diff options
| author | T Michael Turney <mturney@codeaurora.org> | 2018-04-24 10:15:46 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2018-04-30 06:25:58 +0000 |
| commit | 3775f1c0e177b3667753bbf0087b7975f3ec712e (patch) | |
| tree | c95237636d1f3c9a576e41538ff3354262e69a91 /src/arch/arm64/armv8 | |
| parent | 6e0f0f7f9c91f41eb40f4ef6979937caee168bdf (diff) | |
| download | coreboot-3775f1c0e177b3667753bbf0087b7975f3ec712e.tar.xz | |
arm64: Add ARCH Timer
SoC sdm845 uses ARCH Timer
Change-Id: I45e2d4d2c16a2cded3df20d393d2b8820050ac80
Signed-off-by: T Michael Turney <mturney@codeaurora.org>
Reviewed-on: https://review.coreboot.org/25612
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Diffstat (limited to 'src/arch/arm64/armv8')
| -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; +} |