diff --git a/litex/soc/software/include/hw/common.h b/litex/soc/software/include/hw/common.h
index 801ec979..d2553118 100644
--- a/litex/soc/software/include/hw/common.h
+++ b/litex/soc/software/include/hw/common.h
@@ -3,9 +3,8 @@
 
 #include <stdint.h>
 
-/* To overwrite CSR accessors, define extern, non-inlined versions
- * of csr_rd_uint[8|16|32|64]() and csr_wr_uint[8|16|32|64](), and
- * define CSR_ACCESSORS_DEFINED.
+/* To overwrite CSR subregister accessors, define extern, non-inlined versions
+ * of csr_writel() and csr_readl(), and define CSR_ACCESSORS_DEFINED.
  */
 
 #ifndef CSR_ACCESSORS_DEFINED
@@ -41,6 +40,16 @@
 /* CSR subregisters are embedded inside native CPU word aligned locations: */
 #define MMPTR(a) (*((volatile unsigned long *)(a)))
 
+static inline unsigned long csr_writel(unsigned long v, unsigned long a)
+{
+       MMPTR(a) = v;
+}
+
+static inline unsigned long csr_readl(unsigned long a)
+{
+       return MMPTR(a);
+}
+
 /* Number of subregs required for various total byte sizes, by subreg width:
  * NOTE: 1, 2, 4, and 8 bytes represent uint[8|16|32|64]_t C types; However,
  *       CSRs of intermediate byte sizes (24, 40, 48, and 56) are NOT padded