diff --git a/MdePkg/Include/Register/RiscV64/RiscVEncoding.h b/MdePkg/Include/Register/RiscV64/RiscVEncoding.h
index a656d443a5..ea148f7810 100644
--- a/MdePkg/Include/Register/RiscV64/RiscVEncoding.h
+++ b/MdePkg/Include/Register/RiscV64/RiscVEncoding.h
@@ -20,6 +20,7 @@
 #define MSTATUS_SPP         (1UL << MSTATUS_SPP_SHIFT)
 #define MSTATUS_MPP_SHIFT   11
 #define MSTATUS_MPP         (3UL << MSTATUS_MPP_SHIFT)
+#define MSTATUS_FS          0x00006000UL
 
 #define SSTATUS_SIE         MSTATUS_SIE
 #define SSTATUS_SPIE_SHIFT  MSTATUS_SPIE_SHIFT
@@ -76,6 +77,9 @@
 #define CSR_CYCLE  0xc00
 #define CSR_TIME   0xc01
 
+/* Floating-Point */
+#define CSR_FCSR  0x003
+
 /* Supervisor Trap Setup */
 #define CSR_SSTATUS  0x100
 #define CSR_SEDELEG  0x102