diff --git a/board/xilinx/ppc405-generic/xilinx_ppc405_generic.c b/board/xilinx/ppc405-generic/xilinx_ppc405_generic.c
index 8b10dba..32105a8 100644
--- a/board/xilinx/ppc405-generic/xilinx_ppc405_generic.c
+++ b/board/xilinx/ppc405-generic/xilinx_ppc405_generic.c
@@ -46,3 +46,7 @@
 	return;
 }
 void get_sys_info(sys_info_t *) __attribute__((weak, alias("__get_sys_info")));
+
+int get_serial_clock(void){
+	return XPAR_UARTNS550_0_CLOCK_FREQ_HZ;
+}
diff --git a/board/xilinx/ppc405-generic/xparameters.h b/board/xilinx/ppc405-generic/xparameters.h
index 90fe969..c3df9e5 100644
--- a/board/xilinx/ppc405-generic/xparameters.h
+++ b/board/xilinx/ppc405-generic/xparameters.h
@@ -19,7 +19,6 @@
 #define XPAR_CORE_CLOCK_FREQ_HZ		400000000
 #define XPAR_INTC_MAX_NUM_INTR_INPUTS	32
 #define XPAR_SPI_0_NUM_TRANSFER_BITS	8
-#define XPAR_UARTNS550_0_BASEADDR	0xdeadbeef
 #define XPAR_UARTNS550_0_CLOCK_FREQ_HZ	100000000
 
 #endif
diff --git a/board/xilinx/ppc440-generic/xilinx_ppc440_generic.c b/board/xilinx/ppc440-generic/xilinx_ppc440_generic.c
index 3718a76..f92a303 100644
--- a/board/xilinx/ppc440-generic/xilinx_ppc440_generic.c
+++ b/board/xilinx/ppc440-generic/xilinx_ppc440_generic.c
@@ -39,3 +39,7 @@
 	return;
 }
 void get_sys_info(sys_info_t *) __attribute__((weak, alias("__get_sys_info")));
+
+int get_serial_clock(void){
+	return XPAR_UARTNS550_0_CLOCK_FREQ_HZ;
+}
diff --git a/board/xilinx/ppc440-generic/xparameters.h b/board/xilinx/ppc440-generic/xparameters.h
index e307de9..9685560 100644
--- a/board/xilinx/ppc440-generic/xparameters.h
+++ b/board/xilinx/ppc440-generic/xparameters.h
@@ -17,7 +17,6 @@
 #define XPAR_PLB_CLOCK_FREQ_HZ		100000000
 #define XPAR_CORE_CLOCK_FREQ_HZ		400000000
 #define XPAR_INTC_MAX_NUM_INTR_INPUTS	32
-#define XPAR_UARTNS550_0_BASEADDR	0xdeadbeef
 #define XPAR_UARTNS550_0_CLOCK_FREQ_HZ	100000000
 
 #endif