Squash commits for public release

build/boot/x86_64/rawImage/BUILD.gn

@@ -0,0 +1,23 @@
+if (target_arch == "x86_64") {
+  path_to_bins = "__EMPTY_PATH_"
+  if (host == "llvm") {
+    path_to_bins = llvm_bin_path
+  }
+
+  make_raw_image_script_args = [
+    rebase_path("$root_build_dir/prekernelx86_64.bin", root_build_dir),
+    rebase_path("$root_build_dir/rawImage.elf", root_build_dir),
+    "$target_arch",
+    "$target_board",
+    "$host",
+    "$path_to_bins",
+  ]
+
+  action("rawImage") {
+    script = "make_raw_image.py"
+    sources = [ "$root_build_dir/prekernelx86_64.bin" ]
+    outputs = [ "$root_build_dir/rawImage.elf" ]
+    args = make_raw_image_script_args
+    deps = [ "//build/boot/x86_64/prekernel:prekernelx86_64" ]
+  }
+}

build/boot/x86_64/rawImage/make_raw_image.py

@@ -0,0 +1,30 @@
+import sys
+import os
+import subprocess
+
+prekernel_path = sys.argv[1]
+out_path = sys.argv[2]
+arch = sys.argv[3]
+board = sys.argv[4]
+host = sys.argv[5]
+path_to_bins = sys.argv[6]
+
+if path_to_bins == "__EMPTY_PATH_":
+    path_to_bins = ""
+if len(path_to_bins) != 0:
+    if path_to_bins[-1] != '/':
+        path_to_bins += "/"
+
+if host == "gnu":
+    OBJCOPY_TOOL = "{0}x86_64-elf-objcopy".format(path_to_bins)
+elif host == "llvm":
+    OBJCOPY_TOOL = "{0}llvm-objcopy".format(path_to_bins)
+else:
+    print("Unsupported host {0}".format(host))
+    exit(0)
+
+# rawImage for x86 is a multiboot-capable elf file. Since qemu does not
+# implement support for multiboot2 specs, which could load elf64, we have
+# to change the type of the elf file to elf32-i686.
+output = subprocess.check_output(
+    "{0} -O elf32-i386 {1} {2}".format(OBJCOPY_TOOL, prekernel_path, out_path), shell=True)