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-rw-r--r--arch/x86/xen/efi.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/x86/xen/efi.c b/arch/x86/xen/efi.c
new file mode 100644
index 000000000000..a02e09e18f57
--- /dev/null
+++ b/arch/x86/xen/efi.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2014 Oracle Co., Daniel Kiper
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/efi.h>
+#include <linux/init.h>
+#include <linux/string.h>
+
+#include <xen/xen-ops.h>
+
+#include <asm/setup.h>
+
+void __init xen_efi_init(void)
+{
+ efi_system_table_t *efi_systab_xen;
+
+ efi_systab_xen = xen_efi_probe();
+
+ if (efi_systab_xen == NULL)
+ return;
+
+ strncpy((char *)&boot_params.efi_info.efi_loader_signature, "Xen",
+ sizeof(boot_params.efi_info.efi_loader_signature));
+ boot_params.efi_info.efi_systab = (__u32)__pa(efi_systab_xen);
+ boot_params.efi_info.efi_systab_hi = (__u32)(__pa(efi_systab_xen) >> 32);
+
+ set_bit(EFI_BOOT, &efi.flags);
+ set_bit(EFI_PARAVIRT, &efi.flags);
+ set_bit(EFI_64BIT, &efi.flags);
+}