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