Subversion Repositories c0or1k

#! /usr/bin/env python2.6

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

#

#  Codezero -- Virtualization microkernel for embedded systems.

#

#  Copyright © 2009  B Labs Ltd

#

import os, sys

from optparse import OptionParser

from os.path import join

from os import path

import elf, sys

def conv_hex(val):

    hexval = hex(val)

    if hexval[-1:] == 'L':

        hexval = hexval[:-1]

    return hexval

lds_header = \

'''

/*

 * The next free p_align'ed LMA base address

 *

 * Usually in ARM p_align == 16K

 *

 * p_align = %s

 */

'''

def main():

    usage = "usage: %prog [options] arg"

    parser = OptionParser(usage)

    parser.add_option("--first-free-page",

                      action = "store_true", dest = "ffpage",

                      default = False,

                      help = "Prints out the first free loadable page "

                             "available after the image in "

                             "linker script format")

    parser.add_option("--lma-start-end", action = "store_true",

                      dest = "lma_boundary", default = False,

                          help = "Prints out the start and end LMA boundaries "

                             "of an image. Useful for aligining images in "

                             "physical memory.")

    (options, args) = parser.parse_args()

    if len(args) != 1:

        parser.print_help()

    elffile = elf.ElfFile.from_file(args[0])

    if options.lma_boundary:

        paddr_first = 0

        paddr_start = 0

        paddr_end = 0

        for pheader in elffile.pheaders:

            x = pheader.ai

            if str(x.p_type) != "LOAD":

                continue

            if paddr_first == 0:

                paddr_first = 1

                paddr_start = x.p_paddr.value

            if paddr_start > x.p_paddr.value:

                paddr_start = x.p_paddr.value

            if paddr_end < x.p_paddr + x.p_memsz:

                paddr_end = x.p_paddr + x.p_memsz

        rest, image_name = path.split(args[0])

        if image_name[-4] == ".":

            image_name = image_name[:-4]

        print image_name

        if hex(paddr_start)[-1] == "L":

            print "image_start " + hex(paddr_start)[:-1]

        else:

            print "image_start " + hex(paddr_start)

        if hex(paddr_end)[-1] == "L":

            print "image_end " + hex(paddr_end)[:-1]

        else:

            print "image_end " + hex(paddr_end)

if __name__ == "__main__":

    main()