diff --git a/include/drivers/arm/pl011.h b/include/drivers/arm/pl011.h
index 1254920..281330e 100644
--- a/include/drivers/arm/pl011.h
+++ b/include/drivers/arm/pl011.h
@@ -107,32 +107,32 @@
  * Pl011 CPU interface accessors for writing registers
  ******************************************************************************/
 
-static inline void pl011_write_ibrd(unsigned int base, unsigned int val)
+static inline void pl011_write_ibrd(unsigned long base, unsigned int val)
 {
 	mmio_write_32(base + UARTIBRD, val);
 }
 
-static inline void pl011_write_fbrd(unsigned int base, unsigned int val)
+static inline void pl011_write_fbrd(unsigned long base, unsigned int val)
 {
 	mmio_write_32(base + UARTFBRD, val);
 }
 
-static inline void pl011_write_lcr_h(unsigned int base, unsigned int val)
+static inline void pl011_write_lcr_h(unsigned long base, unsigned int val)
 {
 	mmio_write_32(base + UARTLCR_H, val);
 }
 
-static inline void pl011_write_ecr(unsigned int base, unsigned int val)
+static inline void pl011_write_ecr(unsigned long base, unsigned int val)
 {
 	mmio_write_32(base + UARTECR, val);
 }
 
-static inline void pl011_write_cr(unsigned int base, unsigned int val)
+static inline void pl011_write_cr(unsigned long base, unsigned int val)
 {
 	mmio_write_32(base + UARTCR, val);
 }
 
-static inline void pl011_write_dr(unsigned int base, unsigned int val)
+static inline void pl011_write_dr(unsigned long base, unsigned int val)
 {
 	mmio_write_32(base + UARTDR, val);
 }
@@ -141,12 +141,12 @@
  * Pl011 CPU interface accessors for reading registers
  ******************************************************************************/
 
-static inline unsigned int pl011_read_fr(unsigned int base)
+static inline unsigned int pl011_read_fr(unsigned long base)
 {
 	return mmio_read_32(base + UARTFR);
 }
 
-static inline unsigned int pl011_read_dr(unsigned int base)
+static inline unsigned int pl011_read_dr(unsigned long base)
 {
 	return mmio_read_32(base + UARTDR);
 }
diff --git a/lib/aarch64/xlat_tables.c b/lib/aarch64/xlat_tables.c
index 6e04f65..48b0714 100644
--- a/lib/aarch64/xlat_tables.c
+++ b/lib/aarch64/xlat_tables.c
@@ -173,7 +173,7 @@
 	unsigned level_size_shift = L1_XLAT_ADDRESS_SHIFT - (level - 1) *
 						XLAT_TABLE_ENTRIES_SHIFT;
 	unsigned level_size = 1 << level_size_shift;
-	unsigned level_index_mask = XLAT_TABLE_ENTRIES_MASK << level_size_shift;
+	unsigned long level_index_mask = XLAT_TABLE_ENTRIES_MASK << level_size_shift;
 
 	assert(level <= 3);