Hi,
I think nabble wont truncate or line wrap my mail. So i am giving it a try.
I have added changes required for versatile board to call rtc_init &
defines in include/configs/versatile.h to include pl031 rtc definitions
Kindly comment
TIA
Regards
Gururaja
- Add ARM AMBA PL031 RTC Support
- Call rtc_init function to start pl031 rtc if enabled from versatile.c
- Define rtc base address and date command support in versatile.h
Signed-off-by: Gururaja <[EMAIL PROTECTED]>
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
old mode 100644
new mode 100755
index 2e0c118..f888a31
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -56,6 +56,7 @@ COBJS-y += rs5c372.o
COBJS-y += rx8025.o
COBJS-y += s3c24x0_rtc.o
COBJS-y += x1205.o
+COBJS-y += rtc_pl031.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
diff --git a/drivers/rtc/rtc_pl031.c b/drivers/rtc/rtc_pl031.c
new file mode 100755
index 0000000..7136fed
--- /dev/null
+++ b/drivers/rtc/rtc_pl031.c
@@ -0,0 +1,121 @@
+/*
+ * (C) Copyright 2008
+ * Gururaja Hebbar [EMAIL PROTECTED]
+ *
+ * reference linux-2.6.20.6/drivers/rtc/rtc-pl031.c
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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
+ */
+
+#include <common.h>
+#include <command.h>
+#include <rtc.h>
+
+#if defined(CONFIG_RTC_PL031) && defined(CONFIG_CMD_DATE)
+
+#ifndef CFG_RTC_PL031_BASE
+#error CFG_RTC_PL031_BASE is not defined!
+#endif
+
+/*
+ * Register definitions
+ */
+#define RTC_DR 0x00 /* Data read register */
+#define RTC_MR 0x04 /* Match register */
+#define RTC_LR 0x08 /* Data load register */
+#define RTC_CR 0x0c /* Control register */
+#define RTC_IMSC 0x10 /* Interrupt mask and set register */
+#define RTC_RIS 0x14 /* Raw interrupt status register */
+#define RTC_MIS 0x18 /* Masked interrupt status register */
+#define RTC_ICR 0x1c /* Interrupt clear register */
+
+#define RTC_CR_START (1 << 0)
+
+#define RTC_WRITE_REG(addr, val) (*(volatile unsigned int
*)(CFG_RTC_PL031_BASE + (addr)) = (val))
+#define RTC_READ_REG(addr) (*(volatile unsigned int
*)(CFG_RTC_PL031_BASE
+ (addr)))
+
+static int pl031_initted = 0;
+
+/* Enable RTC Start in Control register*/
+void rtc_init(void)
+{
+ RTC_WRITE_REG(RTC_CR,RTC_CR_START);
+
+ pl031_initted = 1;
+}
+
+/*
+ * Reset the RTC. We set the date back to 1970-01-01.
+ */
+void rtc_reset(void)
+{
+ RTC_WRITE_REG(RTC_LR,0x00);
+ if(!pl031_initted)
+ rtc_init();
+}
+
+/*
+ * Set the RTC
+*/
+void rtc_set(struct rtc_time *tmp)
+{
+ unsigned long tim;
+
+ if(!pl031_initted)
+ rtc_init();
+
+ if (tmp == NULL) {
+ puts("Error setting the date/time\n");
+ return;
+ }
+
+ /* Calculate number of seconds this incoming time represents */
+ tim = mktime(tmp->tm_year, tmp->tm_mon, tmp->tm_mday,
+ tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
+
+ RTC_WRITE_REG(RTC_LR,tim);
+}
+
+/*
+ * Get the current time from the RTC
+ */
+int rtc_get(struct rtc_time *tmp)
+{
+ ulong tim;
+
+ if(!pl031_initted)
+ rtc_init();
+
+ if (tmp == NULL) {
+ puts("Error getting the date/time\n");
+ return -1;
+ }
+
+ tim = RTC_READ_REG(RTC_DR);
+
+ to_tm (tim, tmp);
+
+ debug ( "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);
+
+ return 0;
+}
+
+#endif
--
1.5.5.1
diff --git a/board/versatile/versatile.c b/board/versatile/versatile.c
index 9d1a25e..5bf7e85 100644
--- a/board/versatile/versatile.c
+++ b/board/versatile/versatile.c
@@ -41,6 +41,10 @@ void flash__init (void);
void ether__init (void);
void peripheral_power_enable (void);
+#if defined(CONFIG_RTC_PL031) && defined(CONFIG_CMD_DATE)
+extern int rtc_init(void);
+#endif
+
#if defined(CONFIG_SHOW_BOOT_PROGRESS)
void show_boot_progress(int progress)
{
@@ -84,6 +88,11 @@ int board_init (void)
flash__init ();
ether__init ();
+
+#if defined(CONFIG_RTC_PL031) && defined(CONFIG_CMD_DATE)
+ rtc_init();
+#endif
+
return 0;
}
diff --git a/include/configs/versatile.h b/include/configs/versatile.h
index d250150..b93321d 100644
--- a/include/configs/versatile.h
+++ b/include/configs/versatile.h
@@ -96,6 +96,12 @@
#define CFG_SERIAL0 0x101F1000
#define CFG_SERIAL1 0x101F2000
+/*
+ * RTC configuration
+ */
+#define CONFIG_RTC_PL031 1 /* use ARM AMBA PL031
RTC */
+#define CFG_RTC_PL031_BASE 0x101e8000
+
/*
* Command line configuration.
@@ -110,6 +116,7 @@
#define CONFIG_CMD_FLASH
#define CONFIG_CMD_ENV
+#define CONFIG_CMD_DATE
/*
* BOOTP options
--
1.5.5.1
Regards
Gururaja
--
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