Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / arch / i386 / interface / pcbios / bios_reboot.c

diff --git a/qemu/roms/ipxe/src/arch/i386/interface/pcbios/bios_reboot.c b/qemu/roms/ipxe/src/arch/i386/interface/pcbios/bios_reboot.c
new file mode 100644 (file)
index 0000000..68546b2
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/i386/interface/pcbios/bios_reboot.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/** @file
+ *
+ * Standard PC-BIOS reboot mechanism
+ *
+ */
+
+#include <ipxe/reboot.h>
+#include <realmode.h>
+#include <bios.h>
+
+/**
+ * Reboot system
+ *
+ * @v warm             Perform a warm reboot
+ */
+static void bios_reboot ( int warm ) {
+       uint16_t flag;
+
+       /* Configure BIOS for cold/warm reboot */
+       flag = ( warm ? BDA_REBOOT_WARM : 0 );
+       put_real ( flag, BDA_SEG, BDA_REBOOT );
+
+       /* Jump to system reset vector */
+       __asm__ __volatile__ ( REAL_CODE ( "ljmp $0xf000, $0xfff0" ) : : );
+}
+
+PROVIDE_REBOOT ( pcbios, reboot, bios_reboot );