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# -*- mode: python; coding: utf-8; -*-

#  Codezero -- a microkernel for embedded systems.

#

#  Copyright © 2009  B Labs Ltd

import os.path

import sys, subprocess, shutil

from os.path import *

Import('config', 'environment', 'previmage')

e = environment.Clone()

sys.path.append('../../../')

from config.projpaths import *

from config.configuration import *

from tools.pyelf.lmanext import *

rootfs_lds_in = \

'''

/*

 * Linker script that embeds an empty root filesystem.

 * This is to be replaced by a real rootfs image later.

 */

SECTIONS

{

        . = %s;

        .bss : { *(.bss) }

}

'''

def generate_rootfs_lds(target, source, env):

    with open(source[1].path, 'r') as lds_in:

        with open(target[0].path, 'w+') as lds_out:

            linker_script = lds_in.read()

            lds_out.write(linker_script % next_available_lma(source[0].path))

rootfs_lds = e.Command('rootfs.lds', [previmage, 'rootfs.lds.in'], generate_rootfs_lds)

e.Append(LINKFLAGS = '-T' + rootfs_lds[0].path)

rootfs_img = e.Program('rootfs.elf', 'rootfs.c')

Depends(rootfs_img, rootfs_lds)

Return('rootfs_img')