diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h
index 8549d77b4f..24d89939a0 100644
--- a/target/riscv/cpu_bits.h
+++ b/target/riscv/cpu_bits.h
@@ -220,6 +220,9 @@
 #define CSR_MTINST          0x34a
 #define CSR_MTVAL2          0x34b
 
+/* Enhanced Physical Memory Protection (ePMP) */
+#define CSR_MSECCFG         0x390
+#define CSR_MSECCFGH        0x391
 /* Physical Memory Protection */
 #define CSR_PMPCFG0         0x3a0
 #define CSR_PMPCFG1         0x3a1