mirror of
https://github.com/drasko/codezero.git
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234 lines
9.5 KiB
Python
Executable File
234 lines
9.5 KiB
Python
Executable File
#! /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 config.projpaths import *
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from config.configuration import *
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from 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, \
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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 LinuxUpdateKernel:
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def __init__(self, container):
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# List for setting/unsetting .config params of linux
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self.config_param_list = \
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(['PCI', 'SET'],['AEABI', 'SET'],
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['SCSI', 'SET'],['BLK_DEV_SD', 'SET'],
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['SYM53C8XX_2', 'SET'],['INPUT_EVDEV', 'SET'],
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['INOTIFY', 'SET'],['DEBUG_INFO', 'SET'],
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['USB_SUPPORT', 'UNSET'],['SOUND', 'UNSET'],)
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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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['PB11MPCORE', '0x3D4'],
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['BEAGLE', '0x60A'],
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['PBA9', '0x76D'],
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['PBA8', '0x769'])
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# Path of system_macros header file
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self.system_macros_h_out = \
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join(LINUX_KERNELDIR,
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'arch/codezero/include/virtualization/system_macros.h')
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self.system_macros_h_in = \
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join(LINUX_KERNELDIR,
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'arch/codezero/include/virtualization/system_macros.h.in')
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#Path for kernel_param file
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self.kernel_param_out = \
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join(LINUX_KERNELDIR, 'arch/codezero/include/virtualization/kernel_param')
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self.kernel_param_in = \
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join(LINUX_KERNELDIR, 'arch/codezero/include/virtualization/kernel_param.in')
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# Replace line(having input_pattern) in filename with new_data
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def replace_line(self, filename, input_pattern, new_data, prev_line):
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with open(filename, 'r+') as f:
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flag = 0
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temp = 0
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x = re.compile(input_pattern)
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for line in f:
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if '' != prev_line:
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if temp == prev_line and re.match(x, line):
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flag = 1
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break
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temp = line
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else:
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if re.match(x, line):
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flag = 1
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break
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if flag == 0:
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#print 'Warning: No match found for the parameter'
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return
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else:
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# Prevent recompilation in case kernel parameter is same
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if new_data != line:
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f.seek(0)
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l = f.read()
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# Need to truncate file because, size of contents to be
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# written may be less than the size of original file.
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f.seek(0)
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f.truncate(0)
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# Write back to file
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f.write(l.replace(line, new_data))
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# Update kernel parameters
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def update_kernel_params(self, config, container):
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# Update PAGE_OFFSET
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# FIXME: Find a way to add this in system_macros.h or kernel_param
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# issue is we have to update this in KCONFIG file which cannot
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# have dependency on other files.
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file = join(LINUX_KERNELDIR, 'arch/codezero/Kconfig')
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param = str(conv_hex(container.linux_page_offset))
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new_data = ('\t' + 'default ' + param + '\n')
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data_to_replace = "(\t)(default )"
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prev_line = ('\t'+'default 0x80000000 if VMSPLIT_2G' + '\n')
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self.replace_line(file, data_to_replace, new_data, prev_line)
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# Update ARCHID, CPUID and ATAGS ADDRESS
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for cpu_type, cpu_id in self.cpuid_list:
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if cpu_type == config.cpu.upper():
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cpuid = cpu_id
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break
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for arch_type, arch_id in self.archid_list:
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if arch_type == config.platform.upper():
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archid = arch_id
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break
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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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'ztextaddr' : str(conv_hex(container.linux_phys_offset)), \
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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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'zreladdr' : str(conv_hex(container.linux_zreladdr))})
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with open(self.kernel_param_out, 'w+') as output:
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with open(self.kernel_param_in, 'r') as input:
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output.write(input.read() % \
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{'ztextaddr' : str(conv_hex(container.linux_phys_offset)), \
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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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'zreladdr' : str(conv_hex(container.linux_zreladdr))})
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def modify_kernel_config(self, linux_builddir):
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file = join(linux_builddir, '.config')
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for param_name, param_value in self.config_param_list:
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param = 'CONFIG_' + param_name
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prev_line = ''
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if param_value == 'SET':
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data_to_replace = ('# ' + param)
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new_data = (param + '=y' + '\n')
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else:
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data_to_replace = param
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new_data = ('# ' + param + ' is not set' + '\n')
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self.replace_line(file, data_to_replace, new_data, prev_line)
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class LinuxBuilder:
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def __init__(self, pathdict, container):
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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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# Default configuration file to use based on selected platform
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self.platform_config_file = (['PB926', 'versatile_defconfig'],
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['BEAGLE', 'omap3_beagle_defconfig'],
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['PBA8', 'realview_defconfig'],
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['PBA9', 'realview-smp_defconfig'],
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['PB11MPCORE', 'realview-smp_defconfig'],)
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def build_linux(self, config):
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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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for platform, config_file in self.platform_config_file:
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if platform == config.platform.upper():
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configuration_file = config_file
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os.system("make ARCH=codezero CROSS_COMPILE=" + \
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config.toolchain_userspace + \
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" O=" + self.LINUX_KERNEL_BUILDDIR + " " + configuration_file)
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self.kernel_updater.modify_kernel_config(self.LINUX_KERNEL_BUILDDIR)
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self.kernel_updater.update_kernel_params(config, self.container)
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os.system("make ARCH=codezero CROSS_COMPILE=" + \
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config.toolchain_userspace + \
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" O=" + self.LINUX_KERNEL_BUILDDIR + " menuconfig")
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os.system("make ARCH=codezero " + \
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"CROSS_COMPILE=" + config.toolchain_userspace + \
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" O=" + self.LINUX_KERNEL_BUILDDIR)
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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):
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print 'Cleaning linux kernel build...'
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if os.path.exists(self.LINUX_KERNEL_BUILDDIR):
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shutil.rmtree(self.LINUX_KERNEL_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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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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