efi: move x86 efi boot support to x86 arch

prepare to drop the efi arch as efi boot up is not arch sepecific

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 75 insertions, 0 deletions

diff --git a/arch/x86/mach-efi/crt0-efi-x86_64.S b/arch/x86/mach-efi/crt0-efi-x86_64.S
new file mode 100644
index 0000000000..aa03106e9c
--- /dev/null
+++ b/arch/x86/mach-efi/crt0-efi-x86_64.S
@@ -0,0 +1,75 @@
+/* crt0-efi-x86_64.S - x86_64 EFI startup code.
+   Copyright (C) 1999 Hewlett-Packard Co.
+	Contributed by David Mosberger <davidm@hpl.hp.com>.
+   Copyright (C) 2005 Intel Co.
+	Contributed by Fenghua Yu <fenghua.yu@intel.com>.
+
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * 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.
+    * Neither the name of Hewlett-Packard Co. nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE COPYRIGHT OWNER OR CONTRIBUTORS
+    BE LIABLE FOR ANYDIRECT, 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.
+*/
+	.text
+	.align 4
+
+	.globl _start
+_start:
+	subq $8, %rsp
+	pushq %rcx
+	pushq %rdx
+
+0:
+	lea image_base(%rip), %rdi
+	lea _DYNAMIC(%rip), %rsi
+
+	popq %rcx
+	popq %rdx
+	pushq %rcx
+	pushq %rdx
+	call _relocate
+
+	popq %rdi
+	popq %rsi
+
+	call efi_main
+	addq $8, %rsp
+
+.exit:
+	ret
+
+	/* hand-craft a dummy .reloc section so EFI knows it's a relocatable executable: */
+
+	.data
+dummy:	.long	0
+
+#define IMAGE_REL_ABSOLUTE	0
+	.section .reloc, "a"
+label1:
+	.long	dummy-label1				/* Page RVA */
+	.long	10					/* Block Size (2*4+2) */
+	.word	(IMAGE_REL_ABSOLUTE<<12) +  0		/* reloc for dummy */