These changes are the raw update to qemu-2.6.

[kvmfornfv.git] / qemu / roms / ipxe / src / interface / efi / efi_watchdog.c

diff --git a/qemu/roms/ipxe/src/interface/efi/efi_watchdog.c b/qemu/roms/ipxe/src/interface/efi/efi_watchdog.c
new file mode 100644 (file)
index 0000000..7061f81
--- /dev/null
+++ b/qemu/roms/ipxe/src/interface/efi/efi_watchdog.c
@@ -0,0 +1,82 @@
+/*
+ * 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 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 );
+
+/**
+ * @file
+ *
+ * EFI watchdog holdoff timer
+ *
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <ipxe/retry.h>
+#include <ipxe/timer.h>
+#include <ipxe/efi/efi.h>
+#include <ipxe/efi/efi_watchdog.h>
+
+/** Watchdog holdoff interval (in seconds) */
+#define WATCHDOG_HOLDOFF_SECS 10
+
+/** Watchdog timeout (in seconds) */
+#define WATCHDOG_TIMEOUT_SECS ( 5 * 60 )
+
+/** Watchdog code (to be logged on watchdog timeout) */
+#define WATCHDOG_CODE 0x6950584544454144ULL
+
+/** Watchdog data (to be logged on watchdog timeout) */
+#define WATCHDOG_DATA L"iPXE";
+
+/**
+ * Hold off watchdog timer
+ *
+ * @v retry            Retry timer
+ * @v over             Failure indicator
+ */
+static void efi_watchdog_expired ( struct retry_timer *timer,
+                                  int over __unused ) {
+       EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
+       static CHAR16 data[] = WATCHDOG_DATA;
+       EFI_STATUS efirc;
+       int rc;
+
+       DBGC2 ( timer, "EFI holding off watchdog timer\n" );
+
+       /* Restart this holdoff timer */
+       start_timer_fixed ( timer, ( WATCHDOG_HOLDOFF_SECS * TICKS_PER_SEC ) );
+
+       /* Reset watchdog timer */
+       if ( ( efirc = bs->SetWatchdogTimer ( WATCHDOG_TIMEOUT_SECS,
+                                             WATCHDOG_CODE, sizeof ( data ),
+                                             data ) ) != 0 ) {
+               rc = -EEFI ( efirc );
+               DBGC ( timer, "EFI could not set watchdog timer: %s\n",
+                      strerror ( rc ) );
+               return;
+       }
+}
+
+/** Watchdog holdoff timer */
+struct retry_timer efi_watchdog = TIMER_INIT ( efi_watchdog_expired );