Update files

arch/aarch64/boot.S

@@ -0,0 +1,17 @@
+.section ".text.boot"
+
+.global _start
+    .org 0x80000
+_start:
+    ldr     x5, =_start
+    mov     sp, x5
+    ldr     x5, =_kernel_rodata_end
+    ldr     w6, =_bss_size
+1:  cbz     w6, 2f
+    str     xzr, [x5], #8
+    sub     w6, w6, #1
+    cbnz    w6, 1b
+2:  bl      kernel_aarch64_entry
+Halt:
+    wfe
+    b Halt

arch/aarch64/linker.ld

@@ -0,0 +1,42 @@
+ENTRY(_start)
+
+SECTIONS
+{
+    . = 0x80000;
+    _kernel_start = .;
+    .text :
+    {
+        KEEP(*(.text.boot))
+        *(.text .text.*)
+    }
+    . = ALIGN(4096);
+    _kernel_text_end = .;
+
+    .data :
+    {
+        *(.data .data.*)
+    }
+    . = ALIGN(4096);
+    _kernel_data_end = .;
+
+    .rodata :
+    {
+        *(.rodata .rodata.*)
+    }
+    . = ALIGN(4096);
+    _kernel_rodata_end = .;
+
+    .bss :
+    {
+        *(.bss .bss.*)
+    }
+    . = ALIGN(4096);
+    _kernel_end = .;
+    _bss_size = _kernel_end - _kernel_rodata_end;
+
+    /DISCARD/ :
+    {
+        *(.eh_frame)
+        *(.note .note.*)
+    }
+}