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| author | Mario Scheithauer <mario.scheithauer@siemens.com> | 2018-04-10 12:32:07 +0200 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2018-04-11 14:09:48 +0000 |
| commit | ba91cd33b69d8cf28b6813c5a8ed29961f42964e (patch) | |
| tree | ccb1677125118c9e8788c65d8cb2e03415a02814 /src/soc | |
| parent | 79efe52e7dbb70b02cdf448de32e895729ddde7e (diff) | |
| download | coreboot-ba91cd33b69d8cf28b6813c5a8ed29961f42964e.tar.xz | |
soc/intel/common/block/cpu: Fix cpu_get_power_max
To avoid rounding errors with the current data types, the formula in
this function must be converted.
Change-Id: I75d05165fd9e5a0992330df00f8665a05d2daeb3
Signed-off-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Reviewed-on: https://review.coreboot.org/25584
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/common/block/cpu/cpulib.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/soc/intel/common/block/cpu/cpulib.c b/src/soc/intel/common/block/cpu/cpulib.c index ed1ba0fa7b..0b1599a804 100644 --- a/src/soc/intel/common/block/cpu/cpulib.c +++ b/src/soc/intel/common/block/cpu/cpulib.c @@ -287,7 +287,7 @@ uint32_t cpu_get_power_max(void) msr = rdmsr(MSR_PKG_POWER_SKU_UNIT); power_unit = 2 << ((msr.lo & 0xf) - 1); msr = rdmsr(MSR_PKG_POWER_SKU); - return ((msr.lo & 0x7fff) / power_unit) * 1000; + return (msr.lo & 0x7fff) * 1000 / power_unit; } uint32_t cpu_get_max_turbo_ratio(void) |