add arm64 support

- add arm64 dependent codes with GICv3 and SVE support
- fix bugs based on architecture separation requests

arch/arm64/kernel/trampoline.S

@@ -0,0 +1,56 @@
+/* trampoline.S COPYRIGHT FUJITSU LIMITED 2015 */
+.section .rodata, "a", @progbits
+
+.globl trampoline_code_data
+base = .
+trampoline_code_data:
+
+	.org	8
+header_pgtbl:
+	.quad	0		/* page table address */
+func_address:	
+	.quad	0		/* load address */
+arg:	
+	.quad	0		/* next address */
+stack_ptr:
+	.quad	0		/* initial stack */
+debug:
+	.quad	0		/* debug area */
+transit_pgtbl:
+	.quad	0		/* 32->64 bit table address */
+		
+cpu_start_body:
+
+.balign  8
+protect_start:
+	
+.balign 8 
+start_64:
+
+boot_idtptr:
+	.short	0
+	.long	0
+	
+boot_gdtptr:
+	.short	boot_gdt32_end - boot_gdt32
+	.long	boot_gdt32 - base
+	.align	4
+boot_gdt32:
+	.quad	0
+	.quad	0
+	.quad	0x00cf9b000000ffff
+	.quad	0x00cf93000000ffff
+	.quad   0x00af9b000000ffff
+	.quad	0x0000890000000067
+boot_gdt32_end:
+
+start_64_vec:
+	.long   start_64 - base
+	.word   0
+	
+stack:
+	.org    0x1000
+stack_end:
+.globl trampoline_code_data_end
+trampoline_code_data_end:
+