mirror of
https://github.com/drasko/codezero.git
synced 2026-01-13 03:13:15 +01:00
191 lines
8.1 KiB
Python
191 lines
8.1 KiB
Python
#! /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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#
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import os, sys, shelve, string
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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 scripts.config.projpaths import *
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from scripts.config.configuration import *
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from scripts.config.lib import *
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LINUX_KERNEL_BUILDDIR = join(BUILDDIR, os.path.relpath(LINUX_KERNELDIR, PROJROOT))
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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, PROJROOT).replace('conts', 'cont' + str(id))
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return join(BUILDDIR, cont_builddir)
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class LinuxUpdateKernel:
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def __init__(self, container):
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# List of CPUIDs, to be used by linux based on codezero config
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self.cpuid_list = {'ARM926' : '0x41069265',
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'CORTEXA8' : '0x410fc080',
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'ARM11MPCORE': '0x410fb022',
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'CORTEXA9' : '0x410fc090'}
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# List of ARCHIDs, to be used by linux based on codezero config
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self.archid_list = {'PB926' : '0x183',
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'EB' : '0x33B',
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'BEAGLE': '0x60A',
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'PBA9' : '0x76D'}
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# Path of system_macros header file
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self.system_macros_h_out = join(LINUX_KERNELDIR, 'arch/arm/include/vmm/system_macros.h')
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self.system_macros_h_in = join(LINUX_KERNELDIR, 'arch/arm/include/vmm/system_macros.h.in')
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self.kconfig_in = join(LINUX_KERNELDIR, 'arch/arm/Kconfig.in')
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self.kconfig_out = join(LINUX_KERNELDIR, 'arch/arm/Kconfig')
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# Update kernel parameters
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def update_kernel_params(self, config, container):
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with open(self.kconfig_out, 'w+') as output:
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with open(self.kconfig_in, 'r') as input:
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output.write(input.read() % \
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{'phys_offset' : str(conv_hex(container.linux_phys_offset)), \
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'page_offset' : str(conv_hex(container.linux_page_offset)), \
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'ztextaddr' : str(conv_hex(container.linux_phys_offset)), \
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'zreladdr' : str(conv_hex(container.linux_zreladdr))})
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# Update ARCHID, CPUID and ATAGS ADDRESS
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cpuid = self.cpuid_list[config.cpu.upper()]
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archid = self.archid_list[config.platform.upper()]
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# Create system_macros header
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with open(self.system_macros_h_out, 'w+') as output:
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with open(self.system_macros_h_in, 'r') as input:
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output.write(input.read() % \
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{'cpuid' : cpuid, \
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'archid' : archid, \
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'atags' : str(conv_hex(container.linux_page_offset + 0x100))})
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def clean(self):
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os.system('rm -f ' + self.system_macros_h_out)
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os.system('rm -f ' + self.kconfig_out)
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class LinuxBuilder:
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def __init__(self, pathdict, container, opts):
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self.LINUX_KERNELDIR = pathdict['LINUX_KERNELDIR']
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# Calculate linux kernel build directory
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self.LINUX_KERNEL_BUILDDIR = \
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source_to_builddir(LINUX_KERNELDIR, container.id)
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self.container = container
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self.kernel_binary_image = \
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join(os.path.relpath(self.LINUX_KERNEL_BUILDDIR, LINUX_KERNELDIR), \
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'vmlinux')
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self.kernel_image = join(self.LINUX_KERNEL_BUILDDIR, 'linux.elf')
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self.kernel_updater = LinuxUpdateKernel(self.container)
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self.build_config_file = join(self.LINUX_KERNEL_BUILDDIR, '.config')
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self.platform_config_file = None
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# Default configuration file to use based on selected platform
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self.platform_config_files = {'PB926' : 'versatile',
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'BEAGLE' : 'omap3_beagle',
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'PBA9' : 'vexpress_a9'}
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# This one is for EB, EB can have 1136/1176/11MPCore/A8/A9 coretiles
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self.cpu_config_file = {'CORTEXA8': 'eb-a8',
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'CORTEXA9': 'eb-a9',
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'ARM1136' : 'eb-1136',
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'ARM11MPCORE': 'eb-11mpcore'}
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def print_verbose(self, text):
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print "########################################################"
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print "########################################################"
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print "# " + text
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print "########################################################"
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print "########################################################"
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def defconfig_to_config(self, config):
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# First get the linux configuration file corresponding to chosen platform
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self.platform_defconfig = ''
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if config.platform.upper() == 'EB':
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self.platform_defconfig = self.cpu_config_file[config.cpu.upper()]
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else:
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self.platform_defconfig = self.platform_config_files[config.platform.upper()]
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if not self.platform_defconfig:
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print 'Platform detected as: ' + config.platform
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print 'Could not find relevant linux config file please review configuration'
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sys.exit(1)
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# Create a config file from the corresponding defconfig
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os.system("make " + self.platform_defconfig + "_defconfig O=" + self.LINUX_KERNEL_BUILDDIR)
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def build_linux(self, config, opts):
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print '\nBuilding the linux kernel...'
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os.chdir(self.LINUX_KERNELDIR)
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if not os.path.exists(self.LINUX_KERNEL_BUILDDIR):
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os.makedirs(self.LINUX_KERNEL_BUILDDIR)
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# Update linux configuration based on codezero config
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# TODO: This may be changed from run-always to run-on-modification.
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self.kernel_updater.update_kernel_params(config, self.container)
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# Is this the first time the kernel is to be configured?
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if not os.path.exists(self.build_config_file):
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self.print_verbose("Config file does not exist. Creating from defconfig")
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self.defconfig_to_config(config)
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# Batch mode runs without invoking configure stage
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if opts.batch:
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# Build the kernel directly
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os.system('make ARCH=arm CROSS_COMPILE=' + config.toolchain_kernel + \
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' O=' + self.LINUX_KERNEL_BUILDDIR + ' ' + self.build_config_file)
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else:
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# Configure the kernel
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os.system('make ARCH=arm CROSS_COMPILE=' + config.toolchain_kernel + \
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' O=' + self.LINUX_KERNEL_BUILDDIR + ' menuconfig')
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if not os.path.exists(self.build_config_file):
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self.print_verbose("Config file doesnt exist after building: " + self.build_config_file)
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sys.exit(1)
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# Build the kernel
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os.system('make V=1 ARCH=arm ' + '-j ' + opts.jobs + \
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' CROSS_COMPILE=' + config.toolchain_kernel + \
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' O=' + self.LINUX_KERNEL_BUILDDIR + ' Image')
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# Generate kernel_image, elf to be used by codezero
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linux_elf_gen_cmd = (config.toolchain_userspace + 'objcopy -R .note \
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-R .note.gnu.build-id -R .comment -S --change-addresses ' + \
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str(conv_hex(-self.container.linux_page_offset + self.container.linux_phys_offset)) + \
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' ' + self.kernel_binary_image + ' ' + self.kernel_image)
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#print cmd
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os.system(linux_elf_gen_cmd)
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print 'Done...'
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def clean(self, config):
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print 'Cleaning linux kernel build...'
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self.kernel_updater.clean()
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os.system('rm -f ' + self.kernel_image)
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os.chdir(self.LINUX_KERNELDIR)
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os.system('make ARCH=arm CROSS_COMPILE=' + config.toolchain_kernel + \
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' O=' + self.LINUX_KERNEL_BUILDDIR + ' clean')
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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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linux_builder = LinuxBuilder(projpaths, container)
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if len(sys.argv) == 1:
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linux_builder.build_linux()
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elif 'clean' == sys.argv[1]:
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linux_builder.clean()
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else:
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print ' Usage: %s [clean]' % (sys.argv[0])
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