Here are changes to add /dev/eeprom support, and a new header file
needed by the cons driver (after changes just posted).

*** arch/sun3/sun3/mem.c.orig	Tue Mar  1 06:21:53 1994
--- arch/sun3/sun3/mem.c	Sun Mar 13 19:15:49 1994
***************
*** 106,111 ****
--- 106,112 ----
  #include <vm/vm_prot.h>
  
  #include <machine/cpu.h>
+ #include <machine/obio.h>
  
  extern caddr_t vmmap;
  
***************
*** 173,178 ****
--- 174,190 ----
  			if (uio->uio_rw == UIO_WRITE)
  				uio->uio_resid = 0;
  			return (0);
+ 
+ /* minor device 11 (/dev/eeprom) accesses Non-Volatile RAM */
+ 		case 11:
+ 			if (eeprom_va == NULL)
+ 				return (ENXIO);
+ 			o = uio->uio_offset;
+ 			if (o >= OBIO_EEPROM_SIZE)
+ 				return (EFAULT);	/* Not ENXIO? -gwr */
+ 			c = MIN(uio->uio_resid, OBIO_EEPROM_SIZE - o);
+ 			error = uiomove(eeprom_va + o, (int)c, uio);
+ 			return (error);
  
  /* minor device 12 (/dev/zero) is source of nulls on read, rathole on write */
  		case 12:

*** arch/sun3/include/obio.h.orig	Wed Feb 23 06:03:13 1994
--- arch/sun3/include/obio.h	Sun Mar 13 14:26:46 1994
***************
*** 92,95 ****
--- 92,97 ----
  
  #ifdef KERNEL
  
+ extern vm_offset_t eeprom_va;
+ 
  #endif

*** arch/sun3/include/eeprom.h.orig	Sun Mar 13 21:28:19 1994
--- arch/sun3/include/eeprom.h	Sun Mar 13 21:42:09 1994
***************
*** 0 ****
--- 1,178 ----
+ /*
+  * Copyright (c) 1994 Gordon W. Ross
+  * All rights reserved.
+  *
+  * Redistribution and use in source and binary forms, with or without
+  * modification, are permitted provided that the following conditions
+  * are met:
+  * 1. Redistributions of source code must retain the above copyright
+  *    notice, this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright
+  *    notice, this list of conditions and the following disclaimer in the
+  *    documentation and/or other materials provided with the distribution.
+  * 3. All advertising materials mentioning features or use of this software
+  *    must display the following acknowledgement:
+  *      This product includes software developed by Gordon W. Ross.
+  * 4. The name of the Author may not be used to endorse or promote products
+  *    derived from this software without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY Gordon W. Ross ``AS IS'' AND
+  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+  * SUCH DAMAGE.
+  *
+  * $Header: $
+  */
+ 
+ /*
+  * Structure/definitions for the Sun3 EEPROM.
+  *
+  * This information is published in the Sun document:
+  * "PROM User's Manual", part number 800-1736010.
+  */
+ 
+ #include <sys/types.h>
+ 
+ /*
+  * Note that most places where the PROM stores a "true/false" flag,
+  * the true value is 0x12 and false is the usual zero.  Such flags
+  * all take the values EE_TRUE or EE_FALSE so this file does not
+  * need to define so many value macros.
+  */
+ #define	EE_TRUE 0x12
+ #define	EE_FALSE   0
+ 
+ struct eeprom {
+ 
+ 	/* 0x00 */
+ 	u_char	eeTestArea[4];		/* Factory Defined */
+ 	u_short	eeWriteCount[4];	/*    ||      ||   */
+ 	u_char	eeChecksum[4];  	/*    ||      ||   */
+ 	time_t	eeLastHwUpdate; 	/*    ||      ||   */
+ 
+ 	/* 0x14 */
+ 	u_char	eeInstalledMem; 	/* Megabytes */
+ 	u_char	eeMemTestSize;		/*     ||    */
+ 
+ 	/* 0x16 */
+ 	u_char	eeScreenSize;
+ #define	EE_SCR_1152X900 	0x00
+ #define	EE_SCR_1024X1024	0x12
+ #define EE_SCR_1600X1280	0x13
+ #define EE_SCR_1440X1440	0x14
+ 
+ 	u_char	eeWatchDogDoesReset;	/* Watchdog timeout action:
+ 					 * true:  reset/reboot
+ 					 * false: return to monitor
+ 					 */
+ 	/* 0x18 */
+ 	u_char	eeBootDevStored;	/* Is the boot device stored:
+ 					 * true:  use stored device spec.
+ 					 * false: use default (try all)
+ 					 */
+ 	/* Stored boot device spec. i.e.: "sd(Ctlr,Unit,Part)" */
+ 	u_char	eeBootDevName[2];	/* xy,xd,sd,ie,le,st,xt,mt,...	*/
+ 	u_char	eeBootDevCtlr;
+ 	u_char	eeBootDevUnit;
+ 	u_char	eeBootDevPart;
+ 
+ 	/* 0x1E */
+ 	u_char	eeKeyboardType;		/* zero for sun keyboards */
+ 	u_char	eeConsole;		/* What to use for the console	*/
+ #define	EE_CONS_BW		0x00	/* - On-board B&W / keyboard	*/
+ #define	EE_CONS_TTYA		0x10	/* - serial port A		*/
+ #define	EE_CONS_TTYB		0x11	/* - serial port B		*/
+ #define	EE_CONS_COLOR		0x12	/* - Color FB / keyboard	*/
+ 
+ 	/* 0x20 */
+ 	u_char	eeCustomBanner;		/* Is there a custom banner:
+ 					 * true:  use text at 0x68
+ 					 * false: use Sun banner
+ 					 */
+ 
+ 	u_char	eeKeyClick;		/* true/false */
+ 
+ 	/* Boot device with "Diag" switch in Diagnostic mode: */
+ 	u_char	eeDiagDevName[2];
+ 	u_char	eeDiagDevCtlr;
+ 	u_char	eeDiagDevUnit;
+ 	u_char	eeDiagDevPart;
+ 
+ 	/* Video white-on-black (not implemented) */
+ 	u_char	eeWhiteOnBlack;		/* true/false */
+ 
+ 	/* 0x28 */
+ 	char	eeDiagPath[40];		/* path name of diag program	*/
+ 
+ 	/* 0x50 */
+ 	u_char	eeTtyCols;		/* normally 80 */
+ 	u_char	eeTtyRows;		/* normally 34 */
+ 	u_char	ee_x52[6];		/* unused */
+ 
+ 	/* 0x58 */
+ 	/* Default parameters for tty A and tty B: */
+ 	struct	eeTtyDef {
+ 	    u_char	eetBaudSet;	/* Is the baud rate set?
+ 					 * true:  use values here
+ 					 * false: use default (9600)
+ 					 */
+ 	    u_char	eetBaudHi;	/* i.e. 96..  */
+ 	    u_char	eetBaudLo;	/*      ..00  */
+ 	    u_char	eetNoRtsDtr;	/* true: disable H/W flow
+ 					 * false: enable H/W flow */
+ 	    u_char	eet_pad[4];
+ 	} eeTtyDefA, eeTtyDefB;
+ 
+ 	/* 0x68 */
+ 	char eeBannerString[80];	/* see eeCustomBanner above */
+ 
+ 	/* 0xB8 */
+ 	u_short	eeTestPattern;		/* must be 0xAA55 */
+ 	u_short ee_xBA;			/* unused */
+ 
+ 	/* 0xBC */
+ 	/* Configuration data.  Hopefully we don't need it. */
+ 	struct eeConf {
+ 	    u_char	eecData[16];
+ 	} eeConf[12+1];
+ 
+ 	/* 0x18c */
+ 	u_char	eeAltKeyTable;		/* What Key table to use:
+ 					 * 0x58: EEPROM tables
+ 					 * else: PROM key tables
+ 					 */
+ 	u_char	eeKeyboardLocale;	/* extended keyboard type */
+ 	u_char	eeKeyboardID;		/* for EEPROM key tables  */
+ 	u_char	eeCustomLogo;		/* true: use eeLogoBitmap */
+ 
+ 	/* 0x190 */
+ 	u_char	eeKeymapLC[0x80];
+ 	u_char	eeKeymapUC[0x80];
+ 
+ 	/* 0x290 */
+ 	u_char	eeLogoBitmap[64][8];	/* 64x64 bit custom logo */
+ 
+ 	/* 0x490 */
+ 	u_char	ee_x490[0x500-0x490];	/* unused */
+ 
+ 	/* Other stuff we don't care about... */
+ 	/* 0x500 */
+ 	u_char	eeReserved[0x100];
+ 	/* 0x600 */
+ 	u_char	eeROM_Area[0x100];
+ 	/* 0x700 */
+ 	u_char	eeUnixArea[0x100];
+ };
+ 
+ /*
+  * Local Variables:
+  * tab-width: 8
+  * End:
+  */

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