2 files changed, 13 insertions, 0 deletions
diff --git a/src/soc/amd/common/block/cpu/noncar/cpu.c b/src/soc/amd/common/block/cpu/noncar/cpu.c
index 7c1daf96f1..98926bff7e 100644
--- a/src/soc/amd/common/block/cpu/noncar/cpu.c
+++ b/src/soc/amd/common/block/cpu/noncar/cpu.c
@@ -2,8 +2,20 @@
 
 #include <amdblocks/cpu.h>
 #include <cpu/cpu.h>
+#include <cpu/x86/msr.h>
+#include <cpu/amd/msr.h>
+#include <soc/iomap.h>
 
 int get_cpu_count(void)
 {
 	return 1 + (cpuid_ecx(0x80000008) & 0xff);
 }
+
+void set_cstate_io_addr(void)
+{
+	msr_t cst_addr;
+
+	cst_addr.hi = 0;
+	cst_addr.lo = ACPI_CPU_CONTROL;
+	wrmsr(MSR_CSTATE_ADDRESS, cst_addr);
+}
diff --git a/src/soc/amd/common/block/include/amdblocks/cpu.h b/src/soc/amd/common/block/include/amdblocks/cpu.h
index 50300d5a0f..0627bc1377 100644
--- a/src/soc/amd/common/block/include/amdblocks/cpu.h
+++ b/src/soc/amd/common/block/include/amdblocks/cpu.h
@@ -4,6 +4,7 @@
 #define AMD_BLOCK_CPU_H
 
 int get_cpu_count(void);
+void set_cstate_io_addr(void);
 void write_resume_eip(void);
 
 #endif /* AMD_BLOCK_CPU_H */