ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/uboot/drivers/rtc/ds164x.c b/marvell/uboot/drivers/rtc/ds164x.c
new file mode 100644
index 0000000..b913354
--- /dev/null
+++ b/marvell/uboot/drivers/rtc/ds164x.c
@@ -0,0 +1,176 @@
+/*
+ * (C) Copyright 2002
+ * ARIO Data Networks, Inc. dchiu@ariodata.com
+ *
+ * modified for DS164x:
+ * The LEOX team <team@leox.org>, http://www.leox.org
+ *
+ * Based on MontaVista DS1743 code and U-Boot mc146818 code
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/*
+ * Date & Time support for the DS164x RTC
+ */
+
+/* #define RTC_DEBUG */
+
+#include <common.h>
+#include <command.h>
+#include <rtc.h>
+
+
+#if defined(CONFIG_CMD_DATE)
+
+static uchar rtc_read(unsigned int addr );
+static void rtc_write(unsigned int addr, uchar val);
+
+#define RTC_EPOCH 2000 /* century */
+
+/*
+ * DS164x registers layout
+ */
+#define RTC_BASE ( CONFIG_SYS_NVRAM_BASE_ADDR + CONFIG_SYS_NVRAM_SIZE )
+
+#define RTC_YEAR ( RTC_BASE + 0x07 )
+#define RTC_MONTH ( RTC_BASE + 0x06 )
+#define RTC_DAY_OF_MONTH ( RTC_BASE + 0x05 )
+#define RTC_DAY_OF_WEEK ( RTC_BASE + 0x04 )
+#define RTC_HOURS ( RTC_BASE + 0x03 )
+#define RTC_MINUTES ( RTC_BASE + 0x02 )
+#define RTC_SECONDS ( RTC_BASE + 0x01 )
+#define RTC_CONTROL ( RTC_BASE + 0x00 )
+
+#define RTC_CONTROLA RTC_CONTROL /* W=bit6, R=bit5 */
+#define RTC_CA_WRITE 0x80
+#define RTC_CA_READ 0x40
+#define RTC_CONTROLB RTC_SECONDS /* OSC=bit7 */
+#define RTC_CB_OSC_DISABLE 0x80
+#define RTC_CONTROLC RTC_DAY_OF_WEEK /* FT=bit6 */
+#define RTC_CC_FREQ_TEST 0x40
+
+/* ------------------------------------------------------------------------- */
+
+int rtc_get( struct rtc_time *tmp )
+{
+ uchar sec, min, hour;
+ uchar mday, wday, mon, year;
+
+ uchar reg_a;
+
+ reg_a = rtc_read( RTC_CONTROLA );
+ /* lock clock registers for read */
+ rtc_write( RTC_CONTROLA, ( reg_a | RTC_CA_READ ));
+
+ sec = rtc_read( RTC_SECONDS );
+ min = rtc_read( RTC_MINUTES );
+ hour = rtc_read( RTC_HOURS );
+ mday = rtc_read( RTC_DAY_OF_MONTH );
+ wday = rtc_read( RTC_DAY_OF_WEEK );
+ mon = rtc_read( RTC_MONTH );
+ year = rtc_read( RTC_YEAR );
+
+ /* unlock clock registers after read */
+ rtc_write( RTC_CONTROLA, ( reg_a & ~RTC_CA_READ ));
+
+#ifdef RTC_DEBUG
+ printf( "Get RTC year: %02x mon: %02x mday: %02x wday: %02x "
+ "hr: %02x min: %02x sec: %02x\n",
+ year, mon, mday, wday,
+ hour, min, sec );
+#endif
+ 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_wday = bcd2bin( wday & 0x07 );
+
+ /* glue year in century (2000) */
+ tmp->tm_year = bcd2bin( year ) + RTC_EPOCH;
+
+ 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
+
+ return 0;
+}
+
+int rtc_set( struct rtc_time *tmp )
+{
+ uchar reg_a;
+
+#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
+ /* lock clock registers for write */
+ reg_a = rtc_read( RTC_CONTROLA );
+ rtc_write( RTC_CONTROLA, ( reg_a | RTC_CA_WRITE ));
+
+ rtc_write( RTC_MONTH, bin2bcd( tmp->tm_mon ));
+
+ rtc_write( RTC_DAY_OF_WEEK, bin2bcd( tmp->tm_wday ));
+ rtc_write( RTC_DAY_OF_MONTH, bin2bcd( tmp->tm_mday ));
+ rtc_write( RTC_HOURS, bin2bcd( tmp->tm_hour ));
+ rtc_write( RTC_MINUTES, bin2bcd( tmp->tm_min ));
+ rtc_write( RTC_SECONDS, bin2bcd( tmp->tm_sec ));
+
+ /* break year in century */
+ rtc_write( RTC_YEAR, bin2bcd( tmp->tm_year % 100 ));
+
+ /* unlock clock registers after read */
+ rtc_write( RTC_CONTROLA, ( reg_a & ~RTC_CA_WRITE ));
+
+ return 0;
+}
+
+void rtc_reset (void)
+{
+ uchar reg_a, reg_b;
+
+ reg_a = rtc_read( RTC_CONTROLA );
+ reg_b = rtc_read( RTC_CONTROLB );
+
+ if ( reg_b & RTC_CB_OSC_DISABLE )
+ {
+ printf( "real-time-clock was stopped. Now starting...\n" );
+ reg_a |= RTC_CA_WRITE;
+ reg_b &= ~RTC_CB_OSC_DISABLE;
+
+ rtc_write( RTC_CONTROLA, reg_a );
+ rtc_write( RTC_CONTROLB, reg_b );
+ }
+
+ /* make sure read/write clock register bits are cleared */
+ reg_a &= ~( RTC_CA_WRITE | RTC_CA_READ );
+ rtc_write( RTC_CONTROLA, reg_a );
+}
+
+/* ------------------------------------------------------------------------- */
+
+static uchar rtc_read( unsigned int addr )
+{
+ uchar val = *(volatile unsigned char*)(addr);
+
+#ifdef RTC_DEBUG
+ printf( "rtc_read: %x:%x\n", addr, val );
+#endif
+ return( val );
+}
+
+static void rtc_write( unsigned int addr, uchar val )
+{
+#ifdef RTC_DEBUG
+ printf( "rtc_write: %x:%x\n", addr, val );
+#endif
+ *(volatile unsigned char*)(addr) = val;
+}
+
+#endif