Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / rtc / mc146818.c

diff --git a/qemu/roms/u-boot/drivers/rtc/mc146818.c b/qemu/roms/u-boot/drivers/rtc/mc146818.c
new file mode 100644 (file)
index 0000000..f7cf106
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/rtc/mc146818.c
@@ -0,0 +1,152 @@
+/*
+ * (C) Copyright 2001
+ * Denis Peter MPL AG Switzerland. d.peter@mpl.ch
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+/*
+ * Date & Time support for the MC146818 (PIXX4) RTC
+ */
+
+/*#define      DEBUG*/
+
+#include <common.h>
+#include <command.h>
+#include <rtc.h>
+
+#if defined(__I386__) || defined(CONFIG_MALTA)
+#include <asm/io.h>
+#define in8(p) inb(p)
+#define out8(p, v) outb(v, p)
+#endif
+
+#if defined(CONFIG_CMD_DATE)
+
+static uchar rtc_read  (uchar reg);
+static void  rtc_write (uchar reg, uchar val);
+
+#define RTC_PORT_MC146818      CONFIG_SYS_ISA_IO_BASE_ADDRESS +  0x70
+#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_CONFIG_A           0x0A
+#define RTC_CONFIG_B           0x0B
+#define RTC_CONFIG_C           0x0C
+#define RTC_CONFIG_D           0x0D
+
+
+/* ------------------------------------------------------------------------- */
+
+int rtc_get (struct rtc_time *tmp)
+{
+       uchar sec, min, hour, mday, wday, mon, year;
+  /* here check if rtc can be accessed */
+       while((rtc_read(RTC_CONFIG_A)&0x80)==0x80);
+       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: %02x mon/cent: %02x mday: %02x wday: %02x "
+               "hr: %02x min: %02x sec: %02x\n",
+               year, mon, mday, wday,
+               hour, min, sec );
+       printf ( "Alarms: month: %02x hour: %02x min: %02x sec: %02x\n",
+               rtc_read (RTC_CONFIG_D) & 0x3F,
+               rtc_read (RTC_HOURS_ALARM),
+               rtc_read (RTC_MINUTES_ALARM),
+               rtc_read (RTC_SECONDS_ALARM) );
+#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_year = bcd2bin (year);
+       tmp->tm_wday = bcd2bin (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
+
+       return 0;
+}
+
+int rtc_set (struct rtc_time *tmp)
+{
+#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
+       rtc_write(RTC_CONFIG_B,0x82); /* disables the RTC to update the regs */
+
+       rtc_write (RTC_YEAR, bin2bcd(tmp->tm_year % 100));
+       rtc_write (RTC_MONTH, bin2bcd(tmp->tm_mon));
+       rtc_write (RTC_DAY_OF_WEEK, bin2bcd(tmp->tm_wday));
+       rtc_write (RTC_DATE_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 ));
+       rtc_write(RTC_CONFIG_B,0x02); /* enables the RTC to update the regs */
+
+       return 0;
+}
+
+void rtc_reset (void)
+{
+       rtc_write(RTC_CONFIG_B,0x82); /* disables the RTC to update the regs */
+       rtc_write(RTC_CONFIG_A,0x20); /* Normal OP */
+       rtc_write(RTC_CONFIG_B,0x00);
+       rtc_write(RTC_CONFIG_B,0x00);
+       rtc_write(RTC_CONFIG_B,0x02); /* enables the RTC to update the regs */
+}
+
+/* ------------------------------------------------------------------------- */
+
+#ifdef CONFIG_SYS_RTC_REG_BASE_ADDR
+/*
+ * use direct memory access
+ */
+static uchar rtc_read (uchar reg)
+{
+       return(in8(CONFIG_SYS_RTC_REG_BASE_ADDR+reg));
+}
+
+static void rtc_write (uchar reg, uchar val)
+{
+       out8(CONFIG_SYS_RTC_REG_BASE_ADDR+reg, val);
+}
+#else
+static uchar rtc_read (uchar reg)
+{
+       out8(RTC_PORT_MC146818,reg);
+       return(in8(RTC_PORT_MC146818+1));
+}
+
+static void rtc_write (uchar reg, uchar val)
+{
+       out8(RTC_PORT_MC146818,reg);
+       out8(RTC_PORT_MC146818+1,val);
+}
+#endif
+
+#endif