X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Froms%2Fu-boot%2Fdrivers%2Frtc%2Fpl031.c;fp=qemu%2Froms%2Fu-boot%2Fdrivers%2Frtc%2Fpl031.c;h=c4d1259a898d2e885eea0d76a6f16ad1c07e7434;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git

diff --git a/qemu/roms/u-boot/drivers/rtc/pl031.c b/qemu/roms/u-boot/drivers/rtc/pl031.c
new file mode 100644
index 000000000..c4d1259a8
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/rtc/pl031.c
@@ -0,0 +1,109 @@
+/*
+ * (C) Copyright 2008
+ * Gururaja Hebbar gururajakr@sanyo.co.in
+ *
+ * reference linux-2.6.20.6/drivers/rtc/rtc-pl031.c
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <rtc.h>
+
+#if defined(CONFIG_CMD_DATE)
+
+#ifndef CONFIG_SYS_RTC_PL031_BASE
+#error CONFIG_SYS_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 *)(CONFIG_SYS_RTC_PL031_BASE + (addr)) = (val))
+#define	RTC_READ_REG(addr)	\
+			(*(volatile unsigned int *)(CONFIG_SYS_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
+*/
+int 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 -1;
+	}
+
+	/* 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);
+
+	return -1;
+}
+
+/*
+ * 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