From 9c5fe2127af6cb05054fd40521d34e4013b22881 Mon Sep 17 00:00:00 2001
From: Oliver Lehmann <lehmann@ans-netz.de>
Date: Sun, 16 Aug 2009 11:49:51 +0000
Subject: [PATCH] working version

---
 .../cmd/standalone/sa.timer/kernel/timer.c    | 136 +++++++++++++++++-
 1 file changed, 133 insertions(+), 3 deletions(-)

diff --git a/WEGA/src/cmd/standalone/sa.timer/kernel/timer.c b/WEGA/src/cmd/standalone/sa.timer/kernel/timer.c
index 1c34e09..d450863 100644
--- a/WEGA/src/cmd/standalone/sa.timer/kernel/timer.c
+++ b/WEGA/src/cmd/standalone/sa.timer/kernel/timer.c
@@ -23,23 +23,27 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: timer.c,v 1.1 2009/08/16 11:11:00 olivleh1 Exp $
+ * $Id: timer.c,v 1.2 2009/08/16 11:49:51 olivleh1 Exp $
  */
  
 
-#include "time.h"
+#include <time.h>
 #include "rtc72421.h"
+#include "u130.h"
 
 void			wrnibble();
 void			wrbyte();
 int			rdnibble();
 int			rdbyte();
+int			rdvalue();
+int			invalue();
+void			outvalue();
 
 static	int  dmsize[] =		/* Tage/Monat (kumulierend) */
 	{ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 };
 
 long
-gettime()
+r421time()
 {
 	register long time;
 	register d1, d2, d3;
@@ -73,7 +77,71 @@ gettime()
 	return(time);
 }
 
+long
+u130time()
+{
+	register long time;
+	register d1, d2, d3;
+	register i;
 
+	time = 0;
+	if (inb(0xfef1) != 0xbf)	/* Uhrmodul vorhanden ? */
+		return(time);
+	outvalue(0x02);			/* Umschalten auf Datum */
+	d1 = rdvalue(0xfef5);		/* Jahr */
+	d2 = rdvalue(0xfef9);		/* Tag */
+	d3 = rdvalue(0xfefd);		/* Monat */
+	outvalue(0x00);
+	if (d1 > 100 || d2 > 31 || d3 > 12)
+		return(time);
+	i = dmsize[d3-1];
+	if (d1%4 == 0 && d3 > 2) i++;
+	if (d1 < 70) d1 += 100;
+	if (d1 > 137) return(time);
+	time = (d1-69)/4;
+	time += 365*(d1-70)+i;
+	time += d2 - 1;
+
+	d1 = inb(0xfeff) & 0x28;	/* Umschalten auf Zeit */
+	if (d1 == 0x08 || d1 == 0x20) {
+		outvalue(0x02);
+		outvalue(0x00);
+	}	
+	while ((d1 = rdvalue(0xfef5)) == 59)
+		;			/* Sekunden */
+	d2 = rdvalue(0xfef9);		/* Minuten */
+	d3 = rdvalue(0xfefd);		/* Stunden */
+	if (d1 > 59 || d2 > 59 || d3 > 23)
+		return(time);
+	time = 24*time + d3;
+	time = 60*time + d2;
+	time = 60*time + d1;
+	return(time);
+}
+
+long
+gettime()
+{
+	register long time;
+	int a,b; 	 
+
+	time = 0;
+	a = inb(U130BASE)&~MSK_U130;
+	b = STR_U130;
+	if( a == b) {
+		printf("RFT U130X RTC found\n");
+		time = u130time();
+	} else {
+		a = inb(R421BASE)&~MSK_R421;
+		b = STR_R421;
+		if( a == b) {
+			printf("Seiko Epson RTC-72421\n");
+			time = r421time();
+		}
+	}
+	
+	return(time);
+}
 
 r421init()
 {
@@ -135,3 +203,65 @@ unsigned addr2;
 	b=rdnibble(addr1);
         return(a + b*10);
 }
+
+void
+outvalue(t)
+register t;
+{
+	outb(U130BASE, t);
+	t = 10000;
+	while (t--)
+		;
+}
+
+int
+invalue(addr, flag)
+register addr;
+register flag;
+{
+	register seg7, takt;
+	
+	seg7 = inb(addr);
+	if (seg7 != inb(addr))
+		seg7 = inb(addr);
+	takt = seg7 & 0x80;		/* nur gueltig bei 6. Stelle */
+	if (seg7 & 0x20)
+		seg7 = ~seg7;
+	if (addr == U130MM1x)		/* 6.Stelle */
+		seg7 &= 0x07;
+	seg7 &= 0x1f;
+	if (seg7 == 0x0f)
+		return(0);
+	if (seg7 == 0x00) {
+		if (flag == 0)
+			return(0); 
+		if (addr == U130MM1x && takt)
+			return(0);
+	}
+	if (seg7 == 0x02)
+		return(1);
+	if (seg7 == 0x17 || seg7 == 0x05)
+		return(2);
+	if (seg7 == 0x13)
+		return(3);
+	if (seg7 == 0x1a)
+		return(4);
+	if (seg7 == 0x19)
+		return(5);
+	if (seg7 == 0x1d)
+		return(6);
+	if (seg7 == 0x03)
+		return(7);
+	if (seg7 == 0x1f)
+		return(8);
+	if (seg7 == 0x1b)
+		return(9);
+	return(0xff);
+}
+
+int
+rdvalue(addr)
+unsigned addr;
+{
+	return(invalue(addr,0) + invalue(addr+2,0)*10);
+}