Add support for DS12887 RTC; add RTC support for ATC board

CHANGELOG

@@ -2,6 +2,8 @@
 Changes since U-Boot 0.3.1:
 ======================================================================
 
+* Add support for DS12887 RTC; add RTC support for ATC board
+
 * Patch by Nicolas Lacressonniere, 11 Jun 2003:
   Modifications for Atmel AT91RM9200DK ARM920T based development kit
   - Add Atmel DataFlash support for reading and writing.
@@ -419,7 +421,7 @@ Changes for U-Boot 0.3.0:
 
 * TRAB fixes / extensions:
   - Restore VFD brightness as saved in environment
-  - add support for FGujitsu flashes
+  - add support for Fujitsu flashes
   - make sure both buzzers are turned off (drive low level)
 
 * Patches by Robert Schwebel, 06 Mar 2003:

board/atc/atc.c

@@ -203,6 +203,49 @@ const iop_conf_t iop_conf_tab[4][32] = {
     }
 };
 
+/*
+ * UPMB initialization table
+ */
+#define	_NOT_USED_	0xFFFFFFFF
+  
+static const uint rtc_table[] =
+{
+	/*
+	 * Single Read. (Offset 0 in UPMA RAM)
+	 */
+	0xfffec00, 0xfffac00, 0xfff2d00, 0xfef2800, 
+	0xfaf2080, 0xfaf2080, 0xfff2400, 0x1fff6c05, /* last */	    
+	/*
+	 * Burst Read. (Offset 8 in UPMA RAM)
+	 */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Single Write. (Offset 18 in UPMA RAM)
+	 */
+	0xfffec00, 0xfffac00, 0xfff2d00, 0xfef2800, 
+	0xfaf2080, 0xfaf2080, 0xfaf2400, 0x1fbf6c05, /* last */
+	/*
+	 * Burst Write. (Offset 20 in UPMA RAM)
+	 */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Refresh  (Offset 30 in UPMA RAM)
+	 */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Exception. (Offset 3c in UPMA RAM)
+	 */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+};												
+																	
 /* ------------------------------------------------------------------------- */
 
 /* Check Board Identity:
@@ -319,6 +362,17 @@ static long int try_init (volatile memctl8260_t * memctl, ulong sdmr,
 	return (maxsize);
 }
 
+int misc_init_r(void)
+{
+	volatile immap_t *immap = (immap_t *) CFG_IMMR;
+	volatile memctl8260_t *memctl = &immap->im_memctl;
+	
+	upmconfig(UPMA, (uint *)rtc_table, sizeof(rtc_table) / sizeof(uint));
+	memctl->memc_mamr = MxMR_RLFx_6X | MxMR_WLFx_6X | MxMR_OP_NORM;	
+
+	return (0);
+}
+			
 long int initdram (int board_type)
 {
 	volatile immap_t *immap = (immap_t *) CFG_IMMR;

board/atc/config.mk

@@ -30,12 +30,7 @@
 # in RAM where U-Boot is loaded at for debugging.
 #
 
-ifeq ($(CONFIG_BOOT_ROM),y)
+TEXT_BASE := 0xFF000000
-	TEXT_BASE := 0xFF800000
-	PLATFORM_CPPFLAGS += -DCONFIG_BOOT_ROM
-else
-	TEXT_BASE := 0xFF000000
-endif
 
 # RAM version
 #TEXT_BASE := 0x100000

cpu/mpc8260/pci.c

@@ -252,7 +252,13 @@ void pci_mpc8250_init(struct pci_controller *hose)
      * Setting required to enable IRQ1-IRQ7 (SIUMCR [DPPC]), 
      * and local bus for PCI (SIUMCR [LBPC]).
      */
-    immap->im_siu_conf.sc_siumcr = 0x00640000;
+    immap->im_siu_conf.sc_siumcr = (immap->im_siu_conf.sc_siumcr & 
+						  ~SIUMCR_LBPC11 & 
+						~SIUMCR_CS10PC11 & 
+						 ~SIUMCR_LBPC11) |
+				   SIUMCR_LBPC01 | 
+				   SIUMCR_CS10PC01 | 
+				   SIUMCR_LBPC01;
 #endif
 
     /* Make PCI lowest priority */

include/configs/atc.h

@@ -129,7 +129,10 @@
 				 CFG_CMD_EEPROM | \
 				 CFG_CMD_PCI | \
 				 CFG_CMD_PCMCIA | \
+				 CFG_CMD_DATE | \
 				 CFG_CMD_IDE)
+
+
 #define CONFIG_DOS_PARTITION
 
 /* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */
@@ -168,6 +171,14 @@
 
 #define CONFIG_SPI
 
+#define CONFIG_RTC_DS12887
+
+#define RTC_BASE_ADDR 		0x02800000
+#define RTC_PORT_ADDR 		RTC_BASE_ADDR + 0x800
+#define RTC_PORT_DATA 		RTC_BASE_ADDR + 0x808
+
+#define CONFIG_MISC_INIT_R
+
 /*
  * For booting Linux, the board info and command line data
  * have to be in the first 8 MB of memory, since this is
@@ -179,8 +190,6 @@
  * Flash configuration
  */
 
-#define CFG_BOOTROM_BASE	0xFF800000
-#define CFG_BOOTROM_SIZE	0x00080000
 #define CFG_FLASH_BASE		0xFF000000
 #define CFG_FLASH_SIZE		0x00800000
 
@@ -452,6 +461,13 @@
 #define CFG_PSDMR	 CFG_PSDMR_8COL
 #endif /* CFG_RAMBOOT */
 
+#define CFG_BR4_PRELIM  ((RTC_BASE_ADDR & BRx_BA_MSK)   |\
+                         BRx_PS_8                       |\
+                         BRx_MS_UPMA                    |\
+                         BRx_V)
+
+#define CFG_OR4_PRELIM  (ORxU_AM_MSK | ORxU_BI)
+									   
 /*-----------------------------------------------------------------------
  * PCMCIA stuff
  *-----------------------------------------------------------------------

rtc/Makefile

@@ -28,7 +28,8 @@ include $(TOPDIR)/config.mk
 LIB	= librtc.a
 
 OBJS	= date.o   \
-	  ds1302.o ds1306.o ds1307.o ds1337.o ds1556.o ds164x.o ds174x.o \
+	  ds12887.o ds1302.o ds1306.o ds1307.o ds1337.o \
+	  ds1556.o ds164x.o ds174x.o \
 	  m41t11.o m48t35ax.o mc146818.o mk48t59.o \
 	  mpc8xx.o pcf8563.o
 

rtc/ds12887.c

@@ -0,0 +1,238 @@
+/*
+ * (C) Copyright 2003
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * Date & Time support for the DS12887 RTC
+ */
+
+#undef	RTC_DEBUG
+
+#include <common.h>
+#include <command.h>
+#include <config.h>
+#include <rtc.h>
+
+#if defined(CONFIG_RTC_DS12887) && (CONFIG_COMMANDS & CFG_CMD_DATE)
+
+#define RTC_SECONDS			0x00
+#define RTC_SECONDS_ALARM		0x01
+#define RTC_MINUTES			0x02
+#define RTC_MINUTES_ALARM		0x03
+#define RTC_HOURS			0x04
+#define RTC_HOURS_ALARM 		0x05
+#define RTC_DAY_OF_WEEK 		0x06
+#define RTC_DATE_OF_MONTH		0x07
+#define RTC_MONTH			0x08
+#define RTC_YEAR			0x09
+#define RTC_CONTROL_A 			0x0A
+#define RTC_CONTROL_B 			0x0B
+#define RTC_CONTROL_C 			0x0C
+#define RTC_CONTROL_D			0x0D
+
+#define RTC_CA_UIP			0x80 
+#define RTC_CB_DM			0x04
+#define RTC_CB_24_12			0x02
+#define RTC_CB_SET			0x80
+
+#if defined(CONFIG_ATC)
+
+static uchar rtc_read (uchar reg)
+{
+	uchar val;
+    
+    	*(volatile unsigned char*)(RTC_PORT_ADDR) = reg;
+	__asm__ __volatile__ ("sync");
+	
+	val = *(volatile unsigned char*)(RTC_PORT_DATA);
+	return (val);
+}
+
+static void rtc_write (uchar reg, uchar val)
+{
+    	*(volatile unsigned char*)(RTC_PORT_ADDR) = reg;
+	__asm__ __volatile__ ("sync");
+
+	*(volatile unsigned char*)(RTC_PORT_DATA) = val;
+	__asm__ __volatile__ ("sync");
+}
+
+#else
+# error Board specific rtc access functions should be supplied
+#endif
+
+static unsigned bcd2bin (uchar n)
+{
+	return ((((n >> 4) & 0x0F) * 10) + (n & 0x0F));
+}
+
+static unsigned char bin2bcd (unsigned int n)
+{
+	return (((n / 10) << 4) | (n % 10));
+}
+
+/* ------------------------------------------------------------------------- */
+
+void rtc_get (struct rtc_time *tmp)
+{
+	uchar sec, min, hour, mday, wday, mon, year;
+
+	/* check if rtc is available for access */
+	while( rtc_read(RTC_CONTROL_A) & RTC_CA_UIP)
+		;
+    	
+	sec  = rtc_read(RTC_SECONDS);
+	min  = rtc_read(RTC_MINUTES);
+	hour = rtc_read(RTC_HOURS);
+	mday = rtc_read(RTC_DATE_OF_MONTH);
+	wday = rtc_read(RTC_DAY_OF_WEEK);
+	mon  = rtc_read(RTC_MONTH);
+	year = rtc_read(RTC_YEAR);
+
+#ifdef RTC_DEBUG
+	printf( "Get RTC year: %d; mon: %d; mday: %d; wday: %d; "
+		"hr: %d; min: %d; sec: %d\n",
+		year, mon, mday, wday, hour, min, sec );
+
+	printf ( "Alarms: hour: %02x min: %02x sec: %02x\n",
+		 rtc_read (RTC_HOURS_ALARM),
+		 rtc_read (RTC_MINUTES_ALARM),
+		 rtc_read (RTC_SECONDS_ALARM) );
+#endif
+
+	if( !(rtc_read(RTC_CONTROL_B) & RTC_CB_DM))
+	{	    /* Information is in BCD format */
+printf(" Get: Convert BSD to BIN\n");
+		tmp->tm_sec  = bcd2bin (sec  & 0x7F);
+		tmp->tm_min  = bcd2bin (min  & 0x7F);
+		tmp->tm_hour = bcd2bin (hour & 0x3F);
+		tmp->tm_mday = bcd2bin (mday & 0x3F);
+		tmp->tm_mon  = bcd2bin (mon & 0x1F);
+		tmp->tm_year = bcd2bin (year);
+		tmp->tm_wday = bcd2bin (wday & 0x07);
+	}
+else
+	{
+		tmp->tm_sec  = sec  & 0x7F;
+		tmp->tm_min  = min  & 0x7F;
+		tmp->tm_hour = hour & 0x3F;
+		tmp->tm_mday = mday & 0x3F;
+		tmp->tm_mon  = mon & 0x1F;
+		tmp->tm_year = year;
+		tmp->tm_wday = wday & 0x07;
+	}
+
+
+	if(tmp->tm_year<70)
+		tmp->tm_year+=2000;
+	else
+		tmp->tm_year+=1900;
+
+	tmp->tm_yday = 0;
+	tmp->tm_isdst= 0;
+#ifdef RTC_DEBUG
+	printf ( "Get DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
+		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
+		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
+#endif
+}
+
+void rtc_set (struct rtc_time *tmp)
+{
+	uchar save_ctrl_b;
+	uchar sec, min, hour, mday, wday, mon, year;
+
+#ifdef RTC_DEBUG
+	printf ( "Set DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
+		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
+		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
+#endif
+
+	if( !(rtc_read(RTC_CONTROL_B) & RTC_CB_DM))
+	{	    /* Information is in BCD format */
+		year = bin2bcd(tmp->tm_year % 100);
+		mon  = bin2bcd(tmp->tm_mon);
+		wday = bin2bcd(tmp->tm_wday);
+		mday = bin2bcd(tmp->tm_mday);
+		hour = bin2bcd(tmp->tm_hour);
+		min  = bin2bcd(tmp->tm_min);
+		sec  = bin2bcd(tmp->tm_sec);
+	}
+	else
+	{
+		year = tmp->tm_year % 100;
+		mon  = tmp->tm_mon;
+		wday = tmp->tm_wday;
+		mday = tmp->tm_mday;
+		hour = tmp->tm_hour;
+		min  = tmp->tm_min;
+		sec  = tmp->tm_sec;
+	}
+	
+	/* disables the RTC to update the regs */
+	save_ctrl_b = rtc_read(RTC_CONTROL_B);
+	save_ctrl_b |= RTC_CB_SET;
+	rtc_write(RTC_CONTROL_B, save_ctrl_b); 
+
+	rtc_write (RTC_YEAR, year);
+	rtc_write (RTC_MONTH, mon);
+	rtc_write (RTC_DAY_OF_WEEK, wday);
+	rtc_write (RTC_DATE_OF_MONTH, mday);
+	rtc_write (RTC_HOURS, hour);
+	rtc_write (RTC_MINUTES, min);
+	rtc_write (RTC_SECONDS, sec);
+
+	/* enables the RTC to update the regs */
+	save_ctrl_b &= ~RTC_CB_SET;
+	rtc_write(RTC_CONTROL_B, save_ctrl_b); 
+}
+
+void rtc_reset (void)
+{
+	struct rtc_time tmp;
+	uchar ctrl_rg;
+    
+	ctrl_rg = RTC_CB_SET;
+	rtc_write(RTC_CONTROL_B,ctrl_rg); 
+    
+	tmp.tm_year = 1970 % 100;
+	tmp.tm_mon = 1;
+	tmp.tm_mday= 1;
+	tmp.tm_hour = 0;
+	tmp.tm_min = 0;
+	tmp.tm_sec = 0;
+				    
+#ifdef RTC_DEBUG
+        printf ( "RTC:   %4d-%02d-%02d %2d:%02d:%02d UTC\n",
+    		    tmp.tm_year, tmp.tm_mon, tmp.tm_mday,
+		    tmp.tm_hour, tmp.tm_min, tmp.tm_sec);
+#endif
+
+	ctrl_rg = RTC_CB_SET | RTC_CB_24_12 | RTC_CB_DM;
+	rtc_write(RTC_CONTROL_B,ctrl_rg); 
+    	rtc_set(&tmp);
+
+	rtc_write(RTC_HOURS_ALARM, 0),
+	rtc_write(RTC_MINUTES_ALARM, 0),	
+	rtc_write(RTC_SECONDS_ALARM, 0);
+					
+	ctrl_rg = RTC_CB_24_12 | RTC_CB_DM;
+	rtc_write(RTC_CONTROL_B,ctrl_rg); 
+}
+
+#endif  /* (CONFIG_RTC_DS12887) && (CONFIG_COMMANDS & CFG_CMD_DATE) */