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drasko |
# -*- mode: python; coding: utf-8; -*-
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#
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# Codezero -- Virtualization microkernel for embedded systems.
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#
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# Copyright © 2009 B Labs Ltd
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#
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import os, shelve
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import configure
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from configure import *
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from os.path import *
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config = configuration_retrieve()
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arch = config.arch
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subarch = config.subarch
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platform = config.platform
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gcc_arch_flag = config.gcc_arch_flag
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all_syms = config.all
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builddir='build/codezero/'
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# Generate kernel linker script at runtime using template file.
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def generate_kernel_linker_script(target, source, env):
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linker_in = source[0]
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linker_out = target[0]
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cmd = config.toolchain_kernel + "cpp -D__CPP__ " + \
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"-I%s -imacros l4/macros.h -imacros %s -imacros %s -C -P %s -o %s" % \
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('include', 'l4/platform/'+ platform + '/offsets.h', \
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'l4/glue/' + arch + '/memlayout.h', linker_in, linker_out)
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os.system(cmd)
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create_kernel_linker = Command(join(builddir, 'include/l4/arch/arm/linker.lds'), \
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join(PROJROOT, 'include/l4/arch/arm/linker.lds.in'), \
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generate_kernel_linker_script)
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'''
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# Generate linker file with physical addresses,
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# to be used for debug purpose only
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def generate_kernel_phys_linker_script(target, source, env):
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phys_linker_in = source[0]
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phys_linker_out = target[0]
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cmd = config.toolchain_kernel + "cpp -D__CPP__ " + \
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"-I%s -imacros l4/macros.h -imacros %s -imacros %s -C -P %s -o %s" % \
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('include', 'l4/platform/'+ platform + '/offsets.h', \
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'l4/glue/' + arch + '/memlayout.h', phys_linker_in, phys_linker_out)
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os.system(cmd)
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create_kernel_phys_linker = Command(join(builddir, 'include/physlink.lds'), \
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join(PROJROOT, 'include/l4/arch/arm/linker.lds.in'), \
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generate_kernel_phys_linker_script)
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'''
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env = Environment(CC = config.toolchain_kernel + 'gcc',
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AR = config.toolchain_kernel + 'ar',
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RANLIB = config.toolchain_kernel + 'ranlib',
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# We don't use -nostdinc because sometimes we need standard headers,
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# such as stdarg.h e.g. for variable args, as in printk().
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CCFLAGS = ['-g', '-nostdlib', '-ffreestanding', '-std=gnu99', '-Wall', \
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'-Werror', '-march=' + gcc_arch_flag],
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LINKFLAGS = ['-nostdlib', '-T' + join(builddir, 'include/l4/arch/arm/linker.lds')],
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ASFLAGS = ['-D__ASSEMBLY__', '-march=' + gcc_arch_flag],
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PROGSUFFIX = '.elf', # The suffix to use for final executable
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ENV = {'PATH' : os.environ['PATH']}, # Inherit shell path
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LIBS = 'gcc', # libgcc.a - This is required for division routines.
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CPPPATH = ["#include"],
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CPPFLAGS = '-include l4/config.h -include l4/macros.h -include l4/types.h -D__KERNEL__')
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objects = []
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objects += SConscript('src/generic/SConscript',
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exports = {'symbols' : all_syms, 'env' : env},
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duplicate=0, build_dir=builddir + 'generic')
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objects += SConscript('src/glue/' + arch + '/SConscript',
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exports = {'symbols' : all_syms, 'env' : env},
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duplicate=0, build_dir=builddir + 'glue' + '/' + arch)
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objects += SConscript('src/arch/' + arch + '/SConscript',
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exports = {'symbols' : all_syms, 'env' : env},
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duplicate=0, build_dir=builddir + 'arch/' + arch)
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objects += SConscript('src/arch/' + arch + '/' + subarch + '/SConscript',
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exports = {'symbols' : all_syms, 'env' : env},
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duplicate=0, build_dir=builddir + 'arch/' + arch + '/' + subarch)
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objects += SConscript('src/lib/SConscript',
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exports = {'symbols' : all_syms, 'env' : env},
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duplicate=0, build_dir=builddir + 'lib')
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objects += SConscript('src/api/SConscript',
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exports = {'symbols' : all_syms, 'env' : env},
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duplicate=0, build_dir=builddir + 'api')
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objects += SConscript('src/drivers/SConscript',
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exports = {'symbols' : all_syms, 'env' : env, 'platform' : platform,'bdir' : 'driver/'},
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duplicate=0, build_dir=builddir)
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objects += SConscript('src/platform/' + platform + '/SConscript',
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exports = {'symbols' : all_syms, 'env' : env,'platform' : platform}, duplicate=0,
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build_dir=builddir + 'platform' + '/' +platform)
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kernel_elf = env.Program(BUILDDIR + '/kernel.elf', objects)
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#env_phys = env.Clone()
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#env_phys.Replace(LINKFLAGS = ['-nostdlib', '-T' + join(builddir, 'include/physlink.lds')])
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#env_phys.Program(BUILDDIR + '/kernel_phys.elf', objects)
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Alias('kernel', kernel_elf)
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Depends(kernel_elf, objects)
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Depends(objects, create_kernel_linker)
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#Depends(objects, create_kernel_phys_linker)
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Depends(objects, 'include/l4/config.h')
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