diff --git a/include/asm-sparc/sun4prom.h b/include/asm-sparc/sun4prom.h
new file mode 100644
index 0000000..9c8b4cb
--- /dev/null
+++ b/include/asm-sparc/sun4prom.h
@@ -0,0 +1,83 @@
+/*
+ * sun4prom.h -- interface to sun4 PROM monitor.  We don't use most of this,
+ *               so most of these are just placeholders.
+ */
+
+#ifndef _SUN4PROM_H_
+#define _SUN4PROM_H_
+
+/*
+ * Although this looks similar to an romvec for a OpenProm machine, it is 
+ * actually closer to what was used in the Sun2 and Sun3.
+ *
+ * V2 entries exist only in version 2 PROMs and later, V3 in version 3 and later.
+ * 
+ * Many of the function prototypes are guesses.  Some are certainly wrong.
+ * Use with care.
+ */
+
+typedef struct {
+	char		*initSP;		/* Initial system stack ptr */
+	void		(*startmon)(void);	/* Initial PC for hardware */
+	int		*diagberr;		/* Bus err handler for diags */
+	struct linux_arguments_v0 **bootParam; /* Info for bootstrapped pgm */
+ 	unsigned int	*memorysize;		/* Usable memory in bytes */
+	unsigned char	(*getchar)(void);	/* Get char from input device */ 
+	void		(*putchar)(char);	/* Put char to output device */
+	int		(*mayget)(void);	/* Maybe get char, or -1 */
+	int		(*mayput)(int);		/* Maybe put char, or -1 */
+	unsigned char	*echo;			/* Should getchar echo? */
+	unsigned char	*insource;		/* Input source selector */
+	unsigned char	*outsink;		/* Output sink selector */
+	int		(*getkey)(void);	/* Get next key if one exists */
+	void		(*initgetkey)(void);	/* Initialize get key */
+	unsigned int	*translation;		/* Kbd translation selector */
+	unsigned char	*keybid;		/* Keyboard ID byte */
+	int		*screen_x;		/* V2: Screen x pos (r/o) */
+	int		*screen_y;		/* V2: Screen y pos (r/o) */
+	struct keybuf	*keybuf;		/* Up/down keycode buffer */
+	char		*monid;			/* Monitor version ID */
+	void		(*fbwritechar)(char);	/* Write a character to FB */
+	int		*fbAddr;		/* Address of frame buffer */
+	char		**font;			/* Font table for FB */
+	void		(*fbwritestr)(char *);	/* Write string to FB */
+	void		(*reboot)(char *);	/* e.g. reboot("sd()vmlinux") */
+	unsigned char	*linebuf;		/* The line input buffer */
+	unsigned char	**lineptr;		/* Cur pointer into linebuf */
+	int		*linesize;		/* length of line in linebuf */
+	void		(*getline)(char *);	/* Get line from user */
+	unsigned char	(*getnextchar)(void);	/* Get next char from linebuf */
+	unsigned char	(*peeknextchar)(void);	/* Peek at next char */
+	int		*fbthere;		/* =1 if frame buffer there */
+	int		(*getnum)(void);	/* Grab hex num from line */
+	int		(*printf)(char *, ...);	/* See prom_printf() instead */ 
+	void		(*printhex)(int);	/* Format N digits in hex */
+	unsigned char	*leds;			/* RAM copy of LED register */
+	void		(*setLEDs)(unsigned char *);	/* Sets LED's and RAM copy */
+	void		(*NMIaddr)(void *);	/* Addr for level 7 vector */
+	void		(*abortentry)(void);	/* Entry for keyboard abort */
+	int		*nmiclock;		/* Counts up in msec */
+	int		*FBtype;		/* Frame buffer type */
+ 	unsigned int	romvecversion;		/* Version number for this romvec */
+	struct globram  *globram;		/* monitor global variables ??? */
+	void *		kbdaddr;		/* Addr of keyboard in use */
+	int		*keyrinit;		/* ms before kbd repeat */
+	unsigned char	*keyrtick; 		/* ms between repetitions */
+	unsigned int	*memoryavail;		/* V1: Main mem usable size */
+	long		*resetaddr;		/* where to jump on a reset */
+	long		*resetmap;		/* pgmap entry for resetaddr */
+	void		(*exittomon)(void);	/* Exit from user program */
+	unsigned char	**memorybitmap;		/* V1: &{0 or &bits} */
+	void		(*setcxsegmap)(int ctxt, char *va, int pmeg);	/* Set seg in any context */
+	void		(**vector_cmd)(void *);	/* V2: Handler for 'v' cmd */
+	unsigned long	*expectedtrapsig;	/* V3: Location of the expected trap signal */
+	unsigned long	*trapvectorbasetable;	/* V3: Address of the trap vector table */
+	int		unused1;
+	int		unused2;
+	int		unused3;
+	int		unused4;
+} linux_sun4_romvec;
+
+extern linux_sun4_romvec *sun4_romvec;
+
+#endif /* _SUN4PROM_H_ */