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Diffstat (limited to 'src/cpu/intel/model_6fx')
-rw-r--r--src/cpu/intel/model_6fx/model_6fx_init.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/src/cpu/intel/model_6fx/model_6fx_init.c b/src/cpu/intel/model_6fx/model_6fx_init.c
index d29895b299..3a6319a62c 100644
--- a/src/cpu/intel/model_6fx/model_6fx_init.c
+++ b/src/cpu/intel/model_6fx/model_6fx_init.c
@@ -21,9 +21,9 @@
#include <cpu/x86/mtrr.h>
#include <cpu/x86/msr.h>
#include <cpu/x86/lapic.h>
+#include <cpu/intel/hyperthreading.h>
#include <cpu/intel/microcode.h>
#include <cpu/intel/speedstep.h>
-#include <cpu/intel/hyperthreading.h>
#include <cpu/x86/cache.h>
#include <cpu/x86/name.h>
#include <cpu/intel/common/common.h>
@@ -34,12 +34,11 @@ static void configure_c_states(void)
msr_t msr;
msr = rdmsr(MSR_PMG_CST_CONFIG_CONTROL);
-
msr.lo |= (1 << 15); // config lock until next reset
msr.lo |= (1 << 14); // Deeper Sleep
- msr.lo |= (1 << 10); // Enable IO MWAIT redirection
- msr.lo &= ~(1 << 9); // Issue a single stop grant cycle upon stpclk
- msr.lo |= (1 << 3); // Dynamic L2
+ msr.lo |= (1 << 10); // Enable I/O MWAIT redirection for C-States
+ msr.lo &= ~(1 << 9); // Issue a single stop grant cycle upon stpclk
+ msr.lo |= (1 << 3); // dynamic L2
/* Number of supported C-States */
msr.lo &= ~7;
@@ -47,7 +46,7 @@ static void configure_c_states(void)
wrmsr(MSR_PMG_CST_CONFIG_CONTROL, msr);
- /* Set Processor MWAIT IO BASE */
+ /* Set Processor MWAIT IO BASE (P_BLK) */
msr.hi = 0;
msr.lo = ((PMB0_BASE + 4) & 0xffff) | (((PMB1_BASE + 9) & 0xffff) << 16);
wrmsr(MSR_PMG_IO_BASE_ADDR, msr);