diff --git a/src/soc/intel/common/block/smm/smihandler.c b/src/soc/intel/common/block/smm/smihandler.c
index 270b1aa796..dc32970267 100644
--- a/src/soc/intel/common/block/smm/smihandler.c
+++ b/src/soc/intel/common/block/smm/smihandler.c
@@ -304,7 +304,7 @@ static void southbridge_smi_store(
 	reg_ebx = save_state_ops->get_reg(io_smi, RBX);
 
 	/* drivers/smmstore/smi.c */
-	ret = smmstore_exec(sub_command, (void *)reg_ebx);
+	ret = smmstore_exec(sub_command, (void *)(uintptr_t)reg_ebx);
 	save_state_ops->set_reg(io_smi, RAX, ret);
 }
 
@@ -409,7 +409,7 @@ void smihandler_southbridge_pm1(
 	if ((pm1_sts & PWRBTN_STS) && (pm1_en & PWRBTN_EN)) {
 		/* power button pressed */
 		elog_gsmi_add_event(ELOG_TYPE_POWER_BUTTON);
-		pmc_disable_pm1_control(-1UL);
+		pmc_disable_pm1_control(~0);
 		pmc_enable_pm1_control(SLP_EN | (SLP_TYP_S5 << SLP_TYP_SHIFT));
 	}
 }