Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 190 insertions, 0 deletions

diff --git a/qemu/roms/u-boot/drivers/rtc/rv3029.c b/qemu/roms/u-boot/drivers/rtc/rv3029.c
new file mode 100644
index 000000000..f08040a85
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/rtc/rv3029.c
@@ -0,0 +1,190 @@
+/*
+ * (C) Copyright 2010
+ * Heiko Schocher, DENX Software Engineering, hs@denx.de
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <command.h>
+#include <i2c.h>
+#include <rtc.h>
+
+#define RTC_RV3029_CTRL1	0x00
+#define RTC_RV3029_CTRL1_EERE	(1 << 3)
+
+#define RTC_RV3029_CTRL_STATUS	0x03
+#define RTC_RV3029_CTRLS_EEBUSY	(1 << 7)
+
+#define RTC_RV3029_CTRL_RESET	0x04
+#define RTC_RV3029_CTRL_SYS_R	(1 << 4)
+
+#define RTC_RV3029_CLOCK_PAGE	0x08
+#define RTC_RV3029_PAGE_LEN	7
+
+#define RV3029C2_W_SECONDS	0x00
+#define RV3029C2_W_MINUTES	0x01
+#define RV3029C2_W_HOURS	0x02
+#define RV3029C2_W_DATE		0x03
+#define RV3029C2_W_DAYS		0x04
+#define RV3029C2_W_MONTHS	0x05
+#define RV3029C2_W_YEARS	0x06
+
+#define RV3029C2_REG_HR_12_24          (1 << 6)  /* 24h/12h mode */
+#define RV3029C2_REG_HR_PM             (1 << 5)  /* PM/AM bit in 12h mode */
+
+#define RTC_RV3029_EEPROM_CTRL	0x30
+#define RTC_RV3029_TRICKLE_1K	(1 << 4)
+#define RTC_RV3029_TRICKLE_5K	(1 << 5)
+#define RTC_RV3029_TRICKLE_20K	(1 << 6)
+#define RTC_RV3029_TRICKLE_80K	(1 << 7)
+
+int rtc_get( struct rtc_time *tmp )
+{
+	int	ret;
+	unsigned char buf[RTC_RV3029_PAGE_LEN];
+
+	ret = i2c_read(CONFIG_SYS_I2C_RTC_ADDR, RTC_RV3029_CLOCK_PAGE, 1, buf, \
+			RTC_RV3029_PAGE_LEN);
+	if (ret) {
+		printf("%s: error reading RTC: %x\n", __func__, ret);
+		return -1;
+	}
+	tmp->tm_sec  = bcd2bin( buf[RV3029C2_W_SECONDS] & 0x7f);
+	tmp->tm_min  = bcd2bin( buf[RV3029C2_W_MINUTES] & 0x7f);
+	if (buf[RV3029C2_W_HOURS] & RV3029C2_REG_HR_12_24) {
+		/* 12h format */
+		tmp->tm_hour = bcd2bin(buf[RV3029C2_W_HOURS] & 0x1f);
+		if (buf[RV3029C2_W_HOURS] & RV3029C2_REG_HR_PM)
+			/* PM flag set */
+			tmp->tm_hour += 12;
+	} else
+		tmp->tm_hour = bcd2bin(buf[RV3029C2_W_HOURS] & 0x3f);
+
+	tmp->tm_mday = bcd2bin( buf[RV3029C2_W_DATE] & 0x3F );
+	tmp->tm_mon  = bcd2bin( buf[RV3029C2_W_MONTHS] & 0x1F );
+	tmp->tm_wday = bcd2bin( buf[RV3029C2_W_DAYS] & 0x07 );
+	/* RTC supports only years > 1999 */
+	tmp->tm_year = bcd2bin( buf[RV3029C2_W_YEARS]) + 2000;
+	tmp->tm_yday = 0;
+	tmp->tm_isdst = 0;
+
+	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;
+}
+
+int rtc_set( struct rtc_time *tmp )
+{
+	int	ret;
+	unsigned char buf[RTC_RV3029_PAGE_LEN];
+
+	debug( "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);
+
+	if (tmp->tm_year < 2000) {
+		printf("RTC: year %d < 2000 not possible\n", tmp->tm_year);
+		return -1;
+	}
+	buf[RV3029C2_W_SECONDS] = bin2bcd(tmp->tm_sec);
+	buf[RV3029C2_W_MINUTES] = bin2bcd(tmp->tm_min);
+	buf[RV3029C2_W_HOURS] = bin2bcd(tmp->tm_hour);
+	/* set 24h format */
+	buf[RV3029C2_W_HOURS] &= ~RV3029C2_REG_HR_12_24;
+	buf[RV3029C2_W_DATE] = bin2bcd(tmp->tm_mday);
+	buf[RV3029C2_W_DAYS] = bin2bcd(tmp->tm_wday);
+	buf[RV3029C2_W_MONTHS] = bin2bcd(tmp->tm_mon);
+	tmp->tm_year -= 2000;
+	buf[RV3029C2_W_YEARS] = bin2bcd(tmp->tm_year);
+	ret = i2c_write(CONFIG_SYS_I2C_RTC_ADDR, RTC_RV3029_CLOCK_PAGE, 1,
+			buf, RTC_RV3029_PAGE_LEN);
+
+	/* give the RTC some time to update */
+	udelay(1000);
+	return ret;
+}
+
+/* sets EERE-Bit  (automatic EEPROM refresh) */
+static void set_eere_bit(int state)
+{
+	unsigned char reg_ctrl1;
+
+	(void)i2c_read(CONFIG_SYS_I2C_RTC_ADDR, RTC_RV3029_CTRL1, 1,
+			&reg_ctrl1, 1);
+
+	if (state)
+		reg_ctrl1 |= RTC_RV3029_CTRL1_EERE;
+	else
+		reg_ctrl1 &= (~RTC_RV3029_CTRL1_EERE);
+
+	(void)i2c_write(CONFIG_SYS_I2C_RTC_ADDR, RTC_RV3029_CTRL1, 1,
+		&reg_ctrl1, 1);
+}
+
+/* waits until EEPROM page is no longer busy (times out after 10ms*loops) */
+static int wait_eebusy(int loops)
+{
+	int i;
+	unsigned char ctrl_status;
+
+	for (i = 0; i < loops; i++) {
+		(void)i2c_read(CONFIG_SYS_I2C_RTC_ADDR, RTC_RV3029_CTRL_STATUS,
+			1, &ctrl_status, 1);
+
+		if ((ctrl_status & RTC_RV3029_CTRLS_EEBUSY) == 0)
+			break;
+		udelay(10000);
+	}
+	return i;
+}
+
+void rtc_reset (void)
+{
+	unsigned char buf[RTC_RV3029_PAGE_LEN];
+
+	buf[0] = RTC_RV3029_CTRL_SYS_R;
+	(void)i2c_write(CONFIG_SYS_I2C_RTC_ADDR, RTC_RV3029_CTRL_RESET, 1,
+			buf, 1);
+
+#if defined(CONFIG_SYS_RV3029_TCR)
+	/*
+	 * because EEPROM_CTRL register is in EEPROM page it is necessary to
+	 * disable automatic EEPROM refresh and check if EEPROM is busy
+	 * before EEPORM_CTRL register may be accessed
+	 */
+	set_eere_bit(0);
+	wait_eebusy(100);
+	/* read current trickle charger setting */
+	(void)i2c_read(CONFIG_SYS_I2C_RTC_ADDR, RTC_RV3029_EEPROM_CTRL,
+			1, buf, 1);
+	/* enable automatic EEPROM refresh again */
+	set_eere_bit(1);
+
+	/*
+	 * to minimize EEPROM access write trickle charger setting only if it
+	 * differs from current value
+	 */
+	if ((buf[0] & 0xF0) != CONFIG_SYS_RV3029_TCR) {
+		buf[0] = (buf[0] & 0x0F) | CONFIG_SYS_RV3029_TCR;
+		/*
+		 * write trickle charger setting (disable autom. EEPROM
+		 * refresh and wait until EEPROM is idle)
+		 */
+		set_eere_bit(0);
+		wait_eebusy(100);
+		(void)i2c_write(CONFIG_SYS_I2C_RTC_ADDR,
+				RTC_RV3029_EEPROM_CTRL, 1, buf, 1);
+		/*
+		 * it is necessary to wait 10ms before EEBUSY-Bit may be read
+		 * (this is not documented in the data sheet yet, but the
+		 * manufacturer recommends it)
+		 */
+		udelay(10000);
+		/* wait until EEPROM write access is finished */
+		wait_eebusy(100);
+		set_eere_bit(1);
+	}
+#endif
+}