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-rw-r--r--src/northbridge/intel/sandybridge/northbridge.c11
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;
}