First approximation of an ia64 EFI loader. Not functional.

1 files changed, 216 insertions, 0 deletions

diff --git a/sys/boot/efi/libefi/time.c b/sys/boot/efi/libefi/time.c
new file mode 100644
index 0000000..c862c4c
--- /dev/null
+++ b/sys/boot/efi/libefi/time.c
@@ -0,0 +1,216 @@
+/* $FreeBSD$ */
+/*
+ * Copyright (c) 1999, 2000
+ * Intel Corporation.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ * 
+ *    This product includes software developed by Intel Corporation and
+ *    its contributors.
+ * 
+ * 4. Neither the name of Intel Corporation or its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION AND CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL INTEL CORPORATION OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ */
+
+#include <efi.h>
+#include <efilib.h>
+
+#include <time.h>
+#include <sys/time.h>
+
+//
+// Accurate only for the past couple of centuries;
+// that will probably do.
+//
+// (#defines From FreeBSD 3.2 lib/libc/stdtime/tzfile.h)
+//
+
+#define isleap(y)	(((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
+#define SECSPERHOUR ( 60*60 )
+#define SECSPERDAY	(24 * SECSPERHOUR)
+
+time_t
+EfiTimeToUnixTime(EFI_TIME *ETime)
+{
+    //
+    //  These arrays give the cumulative number of days up to the first of the
+    //  month number used as the index (1 -> 12) for regular and leap years.
+    //  The value at index 13 is for the whole year.
+    //
+    static time_t CumulativeDays[2][14] = {
+    {0,
+     0,
+     31,
+     31 + 28,
+     31 + 28 + 31,
+     31 + 28 + 31 + 30,
+     31 + 28 + 31 + 30 + 31,
+     31 + 28 + 31 + 30 + 31 + 30,
+     31 + 28 + 31 + 30 + 31 + 30 + 31,
+     31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
+     31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
+     31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
+     31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
+     31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 },
+    {0,
+     0,
+     31,
+     31 + 29,
+     31 + 29 + 31,
+     31 + 29 + 31 + 30,
+     31 + 29 + 31 + 30 + 31,
+     31 + 29 + 31 + 30 + 31 + 30,
+     31 + 29 + 31 + 30 + 31 + 30 + 31,
+     31 + 29 + 31 + 30 + 31 + 30 + 31 + 31,
+     31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
+     31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
+     31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
+     31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 }};
+
+    time_t  UTime; 
+    int     Year;
+
+    //
+    //  Do a santity check
+    //
+    if ( ETime->Year  <  1998 || ETime->Year   > 2099 ||
+    	 ETime->Month ==    0 || ETime->Month  >   12 ||
+    	 ETime->Day   ==    0 || ETime->Month  >   31 ||
+    	                         ETime->Hour   >   23 ||
+    	                         ETime->Minute >   59 ||
+    	                         ETime->Second >   59 ||
+    	 ETime->TimeZone  < -1440                     ||
+    	 (ETime->TimeZone >  1440 && ETime->TimeZone != 2047) ) {
+    	return (0);
+    }
+
+    //
+    // Years
+    //
+    UTime = 0;
+    for (Year = 1970; Year != ETime->Year; ++Year) {
+        UTime += (CumulativeDays[isleap(Year)][13] * SECSPERDAY);
+    }
+
+    //
+    // UTime should now be set to 00:00:00 on Jan 1 of the file's year.
+	//
+    // Months  
+    //
+    UTime += (CumulativeDays[isleap(ETime->Year)][ETime->Month] * SECSPERDAY);
+
+    //
+    // UTime should now be set to 00:00:00 on the first of the file's month and year
+    //
+    // Days -- Don't count the file's day
+    //
+    UTime += (((ETime->Day > 0) ? ETime->Day-1:0) * SECSPERDAY);
+
+    //
+    // Hours
+    //
+    UTime += (ETime->Hour * SECSPERHOUR);
+
+    //
+    // Minutes
+    //
+    UTime += (ETime->Minute * 60);
+
+    //
+    // Seconds
+    //
+    UTime += ETime->Second;
+
+    //
+    //  EFI time is repored in local time.  Adjust for any time zone offset to
+    //  get true UT
+    //
+    if ( ETime->TimeZone != EFI_UNSPECIFIED_TIMEZONE ) {
+    	//
+    	//  TimeZone is kept in minues...
+    	//
+    	UTime += (ETime->TimeZone * 60);
+    }
+    
+    return UTime;
+}
+
+int
+EFI_GetTimeOfDay(
+	OUT struct timeval *tp,
+	OUT struct timezone *tzp
+	)
+{
+	EFI_TIME				EfiTime;
+	EFI_TIME_CAPABILITIES	Capabilities;
+	EFI_STATUS				Status;
+
+	//
+	//  Get time from EFI
+	//
+
+	Status = RS->GetTime( &EfiTime, &Capabilities );
+	if (EFI_ERROR(Status))
+		return (-1);
+
+	//
+	//  Convert to UNIX time (ie seconds since the epoch
+	//
+
+	tp->tv_sec  = EfiTimeToUnixTime( &EfiTime );
+	tp->tv_usec = 0; // EfiTime.Nanosecond * 1000;
+
+	//
+	//  Do something with the timezone if needed
+	//
+
+	if (tzp) {
+		tzp->tz_minuteswest =
+			EfiTime.TimeZone == EFI_UNSPECIFIED_TIMEZONE ? 0 : EfiTime.TimeZone;
+		//
+		//  This isn't quit right since it doesn't deal with EFI_TIME_IN_DAYLIGHT
+		//
+		tzp->tz_dsttime =
+			EfiTime.Daylight & EFI_TIME_ADJUST_DAYLIGHT ? 1 : 0;
+	}
+
+	return (0);
+}
+
+time_t
+time(time_t *tloc)
+{
+	struct timeval tv;
+	EFI_GetTimeOfDay(&tv, 0);
+	
+	if (tloc)
+		*tloc = tv.tv_sec;
+	return tv.tv_sec;
+}