diff --git a/Documentation/serprog-protocol.txt b/Documentation/serprog-protocol.txt
index d8733cc..821cf28 100644
--- a/Documentation/serprog-protocol.txt
+++ b/Documentation/serprog-protocol.txt
@@ -92,28 +92,4 @@
 		In addition, support for these commands is recommended:
 		S_CMD_Q_PGMNAME, S_CMD_Q_BUSTYPE, S_CMD_Q_CHIPSIZE (if parallel).
 
-
-This define listing should help C coders - (it's here to be the single source for copying - will be a .h someday i think)
-#define S_ACK 0x06
-#define S_NAK 0x15
-#define S_CMD_NOP		0x00            /* No operation                                 */
-#define S_CMD_Q_IFACE           0x01            /* Query interface version                      */
-#define S_CMD_Q_CMDMAP		0x02		/* Query supported commands bitmap		*/
-#define S_CMD_Q_PGMNAME         0x03            /* Query programmer name                        */
-#define S_CMD_Q_SERBUF          0x04            /* Query Serial Buffer Size                     */
-#define S_CMD_Q_BUSTYPE         0x05            /* Query supported bustypes                     */
-#define S_CMD_Q_CHIPSIZE        0x06            /* Query supported chipsize (2^n format)        */
-#define S_CMD_Q_OPBUF           0x07            /* Query operation buffer size                  */
-#define S_CMD_Q_WRNMAXLEN	0x08		/* Query Write to opbuf: Write-N maximum length */
-#define S_CMD_R_BYTE            0x09            /* Read a single byte                           */
-#define S_CMD_R_NBYTES          0x0A            /* Read n bytes                                 */
-#define S_CMD_O_INIT            0x0B            /* Initialize operation buffer                  */
-#define S_CMD_O_WRITEB          0x0C            /* Write opbuf: Write byte with address         */
-#define S_CMD_O_WRITEN		0x0D		/* Write to opbuf: Write-N			*/
-#define S_CMD_O_DELAY           0x0E            /* Write opbuf: udelay                          */
-#define S_CMD_O_EXEC            0x0F            /* Execute operation buffer                     */
-#define S_CMD_SYNCNOP		0x10		/* Special no-operation that returns NAK+ACK	*/
-#define S_CMD_Q_RDNMAXLEN	0x11		/* Query read-n maximum length			*/
-#define S_CMD_S_BUSTYPE		0x12		/* Set used bustype(s).				*/
-#define S_CMD_O_SPIOP		0x13		/* Perform SPI operation.			*/
-#define S_CMD_S_SPI_FREQ	0x14		/* Set SPI clock frequency */
+See also serprog.h.
diff --git a/serprog.c b/serprog.c
index 854cb93..28faac8 100644
--- a/serprog.c
+++ b/serprog.c
@@ -38,6 +38,7 @@
 #include "flash.h"
 #include "programmer.h"
 #include "chipdrivers.h"
+#include "serprog.h"
 
 #define MSGHEADER "serprog: "
 
@@ -48,30 +49,6 @@
  */
 static int serprog_shutdown(void *data);
 
-#define S_ACK 0x06
-#define S_NAK 0x15
-#define S_CMD_NOP		0x00	/* No operation                                 */
-#define S_CMD_Q_IFACE		0x01	/* Query interface version                      */
-#define S_CMD_Q_CMDMAP		0x02	/* Query supported commands bitmap              */
-#define S_CMD_Q_PGMNAME		0x03	/* Query programmer name                        */
-#define S_CMD_Q_SERBUF		0x04	/* Query Serial Buffer Size                     */
-#define S_CMD_Q_BUSTYPE		0x05	/* Query supported bustypes                     */
-#define S_CMD_Q_CHIPSIZE	0x06	/* Query supported chipsize (2^n format)        */
-#define S_CMD_Q_OPBUF		0x07	/* Query operation buffer size                  */
-#define S_CMD_Q_WRNMAXLEN	0x08	/* Query opbuf-write-N maximum length           */
-#define S_CMD_R_BYTE		0x09	/* Read a single byte                           */
-#define S_CMD_R_NBYTES		0x0A	/* Read n bytes                                 */
-#define S_CMD_O_INIT		0x0B	/* Initialize operation buffer                  */
-#define S_CMD_O_WRITEB		0x0C	/* Write opbuf: Write byte with address         */
-#define S_CMD_O_WRITEN		0x0D	/* Write to opbuf: Write-N                      */
-#define S_CMD_O_DELAY		0x0E	/* Write opbuf: udelay                          */
-#define S_CMD_O_EXEC		0x0F	/* Execute operation buffer                     */
-#define S_CMD_SYNCNOP		0x10	/* Special no-operation that returns NAK+ACK    */
-#define S_CMD_Q_RDNMAXLEN	0x11	/* Query read-n maximum length			*/
-#define S_CMD_S_BUSTYPE		0x12	/* Set used bustype(s).				*/
-#define S_CMD_O_SPIOP		0x13	/* Perform SPI operation.			*/
-#define S_CMD_S_SPI_FREQ	0x14	/* Set SPI clock frequency			*/
-
 static uint16_t sp_device_serbuf_size = 16;
 static uint16_t sp_device_opbuf_size = 300;
 /* Bitmap of supported commands */
diff --git a/serprog.h b/serprog.h
new file mode 100644
index 0000000..8d11772
--- /dev/null
+++ b/serprog.h
@@ -0,0 +1,24 @@
+/* According to Serial Flasher Protocol Specification - version 1 */
+#define S_ACK 0x06
+#define S_NAK 0x15
+#define S_CMD_NOP		0x00	/* No operation					*/
+#define S_CMD_Q_IFACE		0x01	/* Query interface version			*/
+#define S_CMD_Q_CMDMAP		0x02	/* Query supported commands bitmap		*/
+#define S_CMD_Q_PGMNAME		0x03	/* Query programmer name			*/
+#define S_CMD_Q_SERBUF		0x04	/* Query Serial Buffer Size			*/
+#define S_CMD_Q_BUSTYPE		0x05	/* Query supported bustypes			*/
+#define S_CMD_Q_CHIPSIZE	0x06	/* Query supported chipsize (2^n format)	*/
+#define S_CMD_Q_OPBUF		0x07	/* Query operation buffer size			*/
+#define S_CMD_Q_WRNMAXLEN	0x08	/* Query Write to opbuf: Write-N maximum length */
+#define S_CMD_R_BYTE		0x09	/* Read a single byte				*/
+#define S_CMD_R_NBYTES		0x0A	/* Read n bytes					*/
+#define S_CMD_O_INIT		0x0B	/* Initialize operation buffer			*/
+#define S_CMD_O_WRITEB		0x0C	/* Write opbuf: Write byte with address		*/
+#define S_CMD_O_WRITEN		0x0D	/* Write to opbuf: Write-N			*/
+#define S_CMD_O_DELAY		0x0E	/* Write opbuf: udelay				*/
+#define S_CMD_O_EXEC		0x0F	/* Execute operation buffer			*/
+#define S_CMD_SYNCNOP		0x10	/* Special no-operation that returns NAK+ACK	*/
+#define S_CMD_Q_RDNMAXLEN	0x11	/* Query read-n maximum length			*/
+#define S_CMD_S_BUSTYPE		0x12	/* Set used bustype(s).				*/
+#define S_CMD_O_SPIOP		0x13	/* Perform SPI operation.			*/
+#define S_CMD_S_SPI_FREQ	0x14	/* Set SPI clock frequency			*/