diff options
Diffstat (limited to 'src/cpu/intel/common/voltage.c')
| -rw-r--r-- | src/cpu/intel/common/voltage.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/cpu/intel/common/voltage.c b/src/cpu/intel/common/voltage.c new file mode 100644 index 0000000000..38951a06db --- /dev/null +++ b/src/cpu/intel/common/voltage.c @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <cpu/x86/msr.h> +#include <smbios.h> + +/* This is not an architectural MSR. */ +#define MSR_PERF_STATUS 0x198 + +unsigned int smbios_cpu_get_voltage(void) +{ + return (rdmsr(MSR_PERF_STATUS).hi & 0xffff) * 10 / 8192; +} |