[efi] Add EFI time source

Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/config/defaults/efi.h b/src/config/defaults/efi.h
index 7b7777daec2d241d4ec1fb8dfc102a882fb50ae6..cdf41c54d419b34c0bc8d5ecb2ee07dbeed0018d 100644 (file)
--- a/src/config/defaults/efi.h
+++ b/src/config/defaults/efi.h
@@ -20,7 +20,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 #define SANBOOT_NULL
 #define BOFM_EFI
 #define ENTROPY_EFI
-#define TIME_NULL
+#define TIME_EFI
 #define REBOOT_EFI
 
 #define        IMAGE_EFI               /* EFI image support */

diff --git a/src/include/ipxe/efi/efi_time.h b/src/include/ipxe/efi/efi_time.h
new file mode 100644 (file)
index 0000000..099994b
--- /dev/null
+++ b/src/include/ipxe/efi/efi_time.h
@@ -0,0 +1,20 @@
+#ifndef _IPXE_EFI_TIME_H
+#define _IPXE_EFI_TIME_H
+
+/** @file
+ *
+ * EFI time source
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+#include <stdint.h>
+
+#ifdef TIME_EFI
+#define TIME_PREFIX_efi
+#else
+#define TIME_PREFIX_efi __efi_
+#endif
+
+#endif /* _IPXE_EFI_TIME_H */

diff --git a/src/include/ipxe/errfile.h b/src/include/ipxe/errfile.h
index e43eec26994dc8c78badee97235b5f77904c276b..3b3efd2e16ba1cc53583c5eadd6f75081669343e 100644 (file)
--- a/src/include/ipxe/errfile.h
+++ b/src/include/ipxe/errfile.h
@@ -320,6 +320,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 #define ERRFILE_efi_utils            ( ERRFILE_OTHER | 0x00450000 )
 #define ERRFILE_efi_wrap             ( ERRFILE_OTHER | 0x00460000 )
 #define ERRFILE_vmbus                ( ERRFILE_OTHER | 0x00470000 )
+#define ERRFILE_efi_time             ( ERRFILE_OTHER | 0x00480000 )
 
 /** @} */
 

diff --git a/src/include/ipxe/time.h b/src/include/ipxe/time.h
index 025280d89c1d4acbe18415d21a3359a16be728f1..4c5bb2a00ec52a9cc418e5cc343753f3117464cb 100644 (file)
--- a/src/include/ipxe/time.h
+++ b/src/include/ipxe/time.h
@@ -44,6 +44,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 
 /* Include all architecture-independent time API headers */
 #include <ipxe/null_time.h>
+#include <ipxe/efi/efi_time.h>
 #include <ipxe/linux/linux_time.h>
 
 /* Include all architecture-dependent time API headers */

diff --git a/src/interface/efi/efi_time.c b/src/interface/efi/efi_time.c
new file mode 100644 (file)
index 0000000..983a0ef
--- /dev/null
+++ b/src/interface/efi/efi_time.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2015 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ * You can also choose to distribute this program under the terms of
+ * the Unmodified Binary Distribution Licence (as given in the file
+ * COPYING.UBDL), provided that you have satisfied its requirements.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+#include <string.h>
+#include <errno.h>
+#include <time.h>
+#include <ipxe/time.h>
+#include <ipxe/efi/efi.h>
+
+/** @file
+ *
+ * EFI time source
+ *
+ */
+
+/**
+ * Get current time in seconds
+ *
+ * @ret time           Time, in seconds
+ */
+static time_t efi_get_time ( void ) {
+       EFI_RUNTIME_SERVICES *rs = efi_systab->RuntimeServices;
+       EFI_TIME time;
+       struct tm tm;
+       EFI_STATUS efirc;
+       int rc;
+
+       /* Get current time and date */
+       if ( ( efirc = rs->GetTime ( &time, NULL ) ) != 0 ) {
+               rc = -EEFI ( efirc );
+               DBGC ( rs, "EFITIME could not get system time: %s\n",
+                      strerror ( rc ) );
+               /* Nothing meaningful we can return */
+               return 0;
+       }
+
+       /* Construct broken-down time */
+       memset ( &tm, 0, sizeof ( tm ) );
+       tm.tm_sec = time.Second;
+       tm.tm_min = time.Minute;
+       tm.tm_hour = time.Hour;
+       tm.tm_mday = time.Day;
+       tm.tm_mon = ( time.Month - 1 );
+       tm.tm_year = ( time.Year - 1900 );
+       DBGC ( rs, "EFITIME is %04d-%02d-%02d %02d:%02d:%02d\n",
+              ( tm.tm_year + 1900 ), ( tm.tm_mon + 1 ),
+              tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec );
+
+       /* Convert to seconds since the Epoch */
+       return mktime ( &tm );
+}
+
+PROVIDE_TIME ( efi, time_now, efi_get_time );