? arch/hpcsh/compile/GENERIC
? arch/hpcsh/compile/HPW650PA
? arch/hpcsh/compile/RAMDISK
Index: arch/hpcsh/hpcsh/autoconf.c
===================================================================
RCS file: /cvsroot/src/sys/arch/hpcsh/hpcsh/autoconf.c,v
retrieving revision 1.22
diff -u -r1.22 autoconf.c
--- arch/hpcsh/hpcsh/autoconf.c	18 Mar 2009 10:22:30 -0000	1.22
+++ arch/hpcsh/hpcsh/autoconf.c	3 May 2010 13:47:20 -0000
@@ -93,6 +93,8 @@
 
 #include <machine/config_hook.h>
 #include <machine/autoconf.h>
+#include <machine/platid.h>
+#include <machine/platid_mask.h>
 
 #include <hpcsh/dev/hd64461/hd64461var.h>
 #include <hpcsh/dev/hd64465/hd64465var.h>
@@ -148,6 +150,32 @@
 	strncpy(booted_device_name, cp, 16);
 }
 
+void
+device_register(device_t dev, void *aux)
+{
+	device_t parent;
+
+	parent = device_parent(dev);
+
+	if (device_is_a(dev, "rtc") &&
+	    parent != NULL && device_is_a(parent, "shb") &&
+	    platid_match(&platid, &platid_mask_MACH_HITACHI_PERSONA_HPW50PAD)) {
+		prop_number_t rtc_baseyear;
+
+#define HPW50PAD_RTC_BASE	1996
+
+		rtc_baseyear = prop_number_create_integer(HPW50PAD_RTC_BASE);
+		KASSERT(rtc_baseyear != NULL);
+
+		if (prop_dictionary_set(device_properties(dev),
+		    "sh3_rtc_baseyear", rtc_baseyear) == false)
+			printf("WARNING: unable to set sh3_rtc_baseyear "
+			    "property for %s\n", device_xname(dev));
+		prop_object_release(rtc_baseyear);
+		return;
+	}
+}
+
 #ifndef MEMORY_DISK_IS_ROOT
 static void
 get_device(char *name)
Index: arch/hpcsh/include/types.h
===================================================================
RCS file: /cvsroot/src/sys/arch/hpcsh/include/types.h,v
retrieving revision 1.3
diff -u -r1.3 types.h
--- arch/hpcsh/include/types.h	28 Feb 2002 03:17:28 -0000	1.3
+++ arch/hpcsh/include/types.h	3 May 2010 13:47:20 -0000
@@ -4,4 +4,6 @@
 
 #include <sh3/types.h>
 
+#define __HAVE_DEVICE_REGISTER
+
 #endif /* _HPCSH_TYPES_H_ */
Index: arch/sh3/dev/rtc.c
===================================================================
RCS file: /cvsroot/src/sys/arch/sh3/dev/rtc.c,v
retrieving revision 1.7
diff -u -r1.7 rtc.c
--- arch/sh3/dev/rtc.c	5 Apr 2009 00:17:56 -0000	1.7
+++ arch/sh3/dev/rtc.c	3 May 2010 13:47:20 -0000
@@ -55,6 +55,7 @@
 
 	int sc_valid;
 	struct todr_chip_handle sc_todr;
+	u_int sc_year0;
 };
 
 static int	rtc_match(device_t, cfdata_t, void *);
@@ -68,7 +69,10 @@
 static int rtc_gettime_ymdhms(todr_chip_handle_t, struct clock_ymdhms *);
 static int rtc_settime_ymdhms(todr_chip_handle_t, struct clock_ymdhms *);
 
-
+#ifndef SH3_RTC_BASEYEAR
+#define SH3_RTC_BASEYEAR	1900
+#endif
+u_int sh3_rtc_baseyear = SH3_RTC_BASEYEAR;
 
 static int
 rtc_match(device_t parent, cfdata_t cfp, void *aux)
@@ -83,6 +87,7 @@
 {
 	struct rtc_softc *sc;
 	uint8_t r;
+	prop_number_t prop_rtc_baseyear;
 #ifdef RTC_DEBUG
 	char bits[128];
 #endif
@@ -119,6 +124,19 @@
 	sc->sc_todr.todr_gettime_ymdhms = rtc_gettime_ymdhms;
 	sc->sc_todr.todr_settime_ymdhms = rtc_settime_ymdhms;
 
+	prop_rtc_baseyear = prop_dictionary_get(device_properties(self),
+	    "sh3_rtc_baseyear");
+	if (prop_rtc_baseyear != NULL) {
+		sh3_rtc_baseyear =
+		    (u_int)prop_number_integer_value(prop_rtc_baseyear);
+#ifdef RTC_DEBUG
+		aprint_debug_dev(self,
+		    "using baseyear %u passed via device property\n",
+		    sh3_rtc_baseyear);
+#endif
+	}
+	sc->sc_year0 = sh3_rtc_baseyear;
+
 	todr_attach(&sc->sc_todr);
 
 #ifdef RTC_DEBUG
@@ -184,7 +202,7 @@
 		return EIO;
 	}
 
-	dt->dt_year += 1900;
+	dt->dt_year += sc->sc_year0;
 	if (dt->dt_year < POSIX_BASE_YEAR)
 		dt->dt_year += 100;
 
@@ -209,7 +227,11 @@
 	unsigned int year;
 	uint8_t r;
 
-	year = TOBCD(dt->dt_year % 100);
+	year = dt->dt_year - sc->sc_year0;
+	if (year > 99)
+		year -= 100;
+
+	year = TOBCD(year);
 
 	r = _reg_read_1(SH_(RCR2));