diff --git a/src/include/cpu/x86/smm.h b/src/include/cpu/x86/smm.h
index ad0984eae5..559b1b7197 100644
--- a/src/include/cpu/x86/smm.h
+++ b/src/include/cpu/x86/smm.h
@@ -263,4 +263,4 @@ void __attribute__((weak)) northbridge_smi_handler(unsigned int node, smm_state_
 void __attribute__((weak)) southbridge_smi_handler(unsigned int node, smm_state_save_area_t *state_save);
 
 void __attribute__((weak)) mainboard_smi_gpi(u16 gpi_sts);
-
+int __attribute__((weak)) mainboard_apm_cnt(u8 data);
diff --git a/src/southbridge/intel/i82801gx/smihandler.c b/src/southbridge/intel/i82801gx/smihandler.c
index aefa283571..bccf6d5f05 100644
--- a/src/southbridge/intel/i82801gx/smihandler.c
+++ b/src/southbridge/intel/i82801gx/smihandler.c
@@ -362,6 +362,9 @@ static void southbridge_smi_apmc(unsigned int node, smm_state_save_area_t *state
 	/* Emulate B2 register as the FADT / Linux expects it */
 
 	reg8 = inb(APM_CNT);
+	if (mainboard_apm_cnt && mainboard_apm_cnt(reg8))
+		return;
+
 	switch (reg8) {
 	case CST_CONTROL:
 		/* Calling this function seems to cause