diff options
Diffstat (limited to 'src/northbridge/intel/sandybridge/northbridge.c')
| -rw-r--r-- | src/northbridge/intel/sandybridge/northbridge.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/northbridge/intel/sandybridge/northbridge.c b/src/northbridge/intel/sandybridge/northbridge.c index 756aacfbb4..baf4348f96 100644 --- a/src/northbridge/intel/sandybridge/northbridge.c +++ b/src/northbridge/intel/sandybridge/northbridge.c @@ -24,6 +24,7 @@ #include <stdint.h> #include <delay.h> #include <cpu/intel/model_206ax/model_206ax.h> +#include <cpu/x86/msr.h> #include <device/device.h> #include <device/pci.h> #include <device/pci_ids.h> @@ -403,6 +404,16 @@ static void northbridge_init(struct device *dev) mdelay(1); set_power_limits(28); + /* + * CPUs with configurable TDP also need power limits set + * in MCHBAR. Use same values from MSR_PKG_POWER_LIMIT. + */ + if (cpu_config_tdp_levels()) { + msr_t msr = rdmsr(MSR_PKG_POWER_LIMIT); + MCHBAR32(0x59A0) = msr.lo; + MCHBAR32(0x59A4) = msr.hi; + } + /* Set here before graphics PM init */ MCHBAR32(0x5500) = 0x00100001; } |