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[/] [c0or1k/] [trunk/] [scripts/] [linux/] [build_rootfs.py] - Rev 2
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#! /usr/bin/env python2.6 # -*- mode: python; coding: utf-8; -*- # # Codezero -- a microkernel for embedded systems. # # Copyright © 2009 B Labs Ltd import os, sys, shelve, shutil from os.path import join PROJRELROOT = "../.." SCRIPTROOT = os.path.abspath(os.path.dirname(".")) sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), PROJRELROOT))) from config.projpaths import * from config.configuration import * # Create linux kernel build directory path as: # conts/linux -> build/cont[0-9]/linux def source_to_builddir(srcdir, id): cont_builddir = \ os.path.relpath(srcdir, \ PROJROOT).replace("conts", \ "cont" + str(id)) return join(BUILDDIR, cont_builddir) class RootfsBuilder: def __init__(self, pathdict, container): self.LINUX_ROOTFSDIR = pathdict["LINUX_ROOTFSDIR"] self.LINUX_ROOTFS_BUILDDIR = \ source_to_builddir(self.LINUX_ROOTFSDIR, container.id) self.rootfs_lds_in = join(self.LINUX_ROOTFSDIR, "rootfs.lds.in") self.rootfs_lds_out = join(self.LINUX_ROOTFS_BUILDDIR, "rootfs.lds") self.rootfs_h_in = join(self.LINUX_ROOTFSDIR, "rootfs.h.in") self.rootfs_h_out = join(self.LINUX_ROOTFS_BUILDDIR, "rootfs.h") self.rootfs_elf_out = join(self.LINUX_ROOTFS_BUILDDIR, "rootfs.elf") self.cont_id = container.id def build_rootfs(self, config): print 'Building the root filesystem...' # IO files from this build os.chdir(LINUX_ROOTFSDIR) if not os.path.exists(self.LINUX_ROOTFS_BUILDDIR): os.makedirs(self.LINUX_ROOTFS_BUILDDIR) with open(self.rootfs_h_out, 'w+') as output: with open(self.rootfs_h_in, 'r') as input: output.write(input.read() % {'cn' : self.cont_id}) os.system(config.toolchain_userspace + "cpp -I%s -P %s > %s" % \ (self.LINUX_ROOTFS_BUILDDIR, self.rootfs_lds_in, \ self.rootfs_lds_out)) os.system(config.toolchain_userspace + "gcc " + \ "-nostdlib -o %s -T%s rootfs.S" % (self.rootfs_elf_out, \ self.rootfs_lds_out)) print "Done..." def clean(self): print 'Cleaning the built root filesystem...' if os.path.exists(self.LINUX_ROOTFS_BUILDDIR): shutil.rmtree(self.LINUX_ROOTFS_BUILDDIR) print 'Done...' if __name__ == "__main__": # This is only a default test case container = Container() container.id = 0 rootfs_builder = RootfsBuilder(projpaths, container) if len(sys.argv) == 1: rootfs_builder.build_rootfs() elif "clean" == sys.argv[1]: rootfs_builder.clean() else: print " Usage: %s [clean]" % (sys.argv[0])