Fix romdisk_register prototype. Most ROMFS images actually lie in RAM. If moved to FLASH with const storage class, then changes are required to avoid warnings

include/nuttx/fs/ramdisk.h

@@ -94,9 +94,9 @@ extern "C"
 #ifdef CONFIG_FS_WRITABLE
 int ramdisk_register(int minor, FAR uint8_t *buffer, uint32_t nsectors,
                      uint16_t sectize, uint8_t rdflags);
-#define romdisk_register(m,b,n,s) ramdisk_register(m,b,n,s,0)
+#define romdisk_register(m,b,n,s) ramdisk_register(m,(FAR uint8_t *)b,n,s,0)
 #else
-int romdisk_register(int minor, FAR uint8_t *buffer, uint32_t nsectors,
+int romdisk_register(int minor, FAR const uint8_t *buffer, uint32_t nsectors,
                      uint16_t sectize);
 #endif
 

tools/README.txt

@@ -393,6 +393,9 @@ mkromfsimg.sh
   image.  It accepts an rcS script "template" and generates and image that
   may be mounted under /etc in the NuttX pseudo file system.
 
+  TIP: Edit the resulting header file and mark the generated data values
+  as 'const' so that they will be stored in FLASH.
+
 mkdeps.c
 cnvwindeps.c
 mkwindeps.sh