diff --git a/litex/soc/integration/export.py b/litex/soc/integration/export.py
index 3b8916507..e2fabb35d 100644
--- a/litex/soc/integration/export.py
+++ b/litex/soc/integration/export.py
@@ -121,16 +121,27 @@ def get_mem_header(regions):
     r = generated_banner("//")
     r += "#ifndef __GENERATED_MEM_H\n#define __GENERATED_MEM_H\n\n"
     for name, region in regions.items():
-        r += "#ifndef {name}\n".format(name=name.upper())
-        r += "#define {name}_BASE 0x{base:08x}L\n#define {name}_SIZE 0x{size:08x}\n\n".format(
+        r += "#ifndef {name}_BASE\n".format(name=name.upper())
+        r += "#define {name}_BASE 0x{base:08x}L\n#define {name}_SIZE 0x{size:08x}\n".format(
             name=name.upper(), base=region.origin, size=region.length)
-        r += "#endif\n"
+        r += "#endif\n\n"
+
+    r += "#ifndef MEM_REGIONS\n"
+    r += "#define MEM_REGIONS \"";
+    for name, region in regions.items():
+        r += f"{name.upper()} {' '*(8-len(name))} 0x{region.origin:08x} 0x{region.size:x} \\n"
+    r = r[:-2]
+    r += "\"\n"
+    r += "#endif\n"
+
     r += "#endif\n"
     return r
 
 def get_soc_header(constants, with_access_functions=True):
     r = generated_banner("//")
     r += "#ifndef __GENERATED_SOC_H\n#define __GENERATED_SOC_H\n"
+
+
     for name, value in constants.items():
         if value is None:
             r += "#define "+name+"\n"
diff --git a/litex/soc/software/bios/cmds/cmd_mem.c b/litex/soc/software/bios/cmds/cmd_mem.c
index d434c42d2..cb01a3926 100644
--- a/litex/soc/software/bios/cmds/cmd_mem.c
+++ b/litex/soc/software/bios/cmds/cmd_mem.c
@@ -5,10 +5,25 @@
 #include <memtest.h>
 
 #include <generated/csr.h>
+#include <generated/mem.h>
 
 #include "../command.h"
 #include "../helpers.h"
 
+/**
+ * Command "mem_list"
+ *
+ * Memory list
+ *
+ */
+static void mem_list_handler(int nb_params, char **params)
+{
+	printf("Available memory regions:\n");
+	puts(MEM_REGIONS);
+}
+
+define_command(mem_list, mem_list_handler, "List available memory regions", MEM_CMDS);
+
 /**
  * Command "mem_read"
  *