+#ifdef CONFIG_SYS_NS16550_PORT_MAPPED
+#define serial_out(x, y) outb(x, (ulong)y)
+#define serial_in(y) inb((ulong)y)
+#elif defined(CONFIG_SYS_NS16550_MEM32) && (CONFIG_SYS_NS16550_REG_SIZE > 0)
+#define serial_out(x, y) out_be32(y, x)
+#define serial_in(y) in_be32(y)
+#elif defined(CONFIG_SYS_NS16550_MEM32) && (CONFIG_SYS_NS16550_REG_SIZE < 0)
+#define serial_out(x, y) out_le32(y, x)
+#define serial_in(y) in_le32(y)
+#else
+#define serial_out(x, y) writeb(x, y)
+#define serial_in(y) readb(y)
+#endif
+
+#if defined(CONFIG_SOC_KEYSTONE)
+#define UART_REG_VAL_PWREMU_MGMT_UART_DISABLE 0
+#define UART_REG_VAL_PWREMU_MGMT_UART_ENABLE ((1 << 14) | (1 << 13) | (1 << 0))
+#undef UART_MCRVAL
+#ifdef CONFIG_SERIAL_HW_FLOW_CONTROL
+#define UART_MCRVAL (UART_MCR_RTS | UART_MCR_AFE)
+#else
+#define UART_MCRVAL (UART_MCR_RTS)
+#endif
+#endif