mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-22 17:55:57 +01:00
bc73cebff1
This will allow for other types of root filesystems that don't rely on Buildroot to be added and used in the future. Propagate --verbose on all build scripts to see full GCC commands. build-all: allow for neat subsets also 9p share rootfs_overlay. TODO document.
104 lines
4.0 KiB
Python
Executable File
104 lines
4.0 KiB
Python
Executable File
#!/usr/bin/env python3
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import glob
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import multiprocessing
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import os
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import pathlib
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import shutil
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import subprocess
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import time
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import common
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parser = common.get_argparse()
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common.add_build_arguments(parser)
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parser.add_argument(
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'extra_scons_args',
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default=[],
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metavar='extra-scons-args',
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nargs='*'
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)
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args = common.setup(parser)
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binaries_dir = os.path.join(common.gem5_system_dir, 'binaries')
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disks_dir = os.path.join(common.gem5_system_dir, 'disks')
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if args.clean:
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common.rmrf(common.gem5_build_dir)
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else:
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start_time = time.time()
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os.makedirs(binaries_dir, exist_ok=True)
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os.makedirs(disks_dir, exist_ok=True)
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if args.gem5_source_dir is None:
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if not os.path.exists(os.path.join(common.gem5_src_dir, '.git')):
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if common.gem5_src_dir == common.gem5_default_src_dir:
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raise Exception('gem5 submodule not checked out')
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assert common.run_cmd([
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'git',
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'-C', common.gem5_default_src_dir,
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'worktree', 'add',
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'-b', os.path.join('wt', args.gem5_build_id),
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common.gem5_src_dir
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]) == 0
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if args.verbose:
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verbose = ['--verbose']
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else:
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verbose = []
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if args.arch == 'x86_64':
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dummy_img_path = os.path.join(disks_dir, 'linux-bigswap2.img')
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with open(dummy_img_path, 'wb') as dummy_img_file:
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zeroes = b'\x00' * (2 ** 16)
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for i in range(2 ** 10):
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dummy_img_file.write(zeroes)
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assert common.run_cmd(['mkswap', dummy_img_path]) == 0
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with open(os.path.join(binaries_dir, 'x86_64-vmlinux-2.6.22.9'), 'w'):
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# This file must always be present, despite --kernel overriding that default and selecting the kernel.
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# I'm not even joking. No one has ever built x86 gem5 without the magic dist dir present.
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pass
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elif args.arch == 'arm' or args.arch == 'aarch64':
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gem5_system_src_dir = os.path.join(common.gem5_src_dir, 'system')
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# dtb
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dt_src_dir = os.path.join(gem5_system_src_dir, 'arm', 'dt')
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dt_build_dir = os.path.join(common.gem5_system_dir, 'arm', 'dt')
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assert common.run_cmd(['make', '-C', dt_src_dir]) == 0
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os.makedirs(dt_build_dir, exist_ok=True)
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for dt in glob.glob(os.path.join(dt_src_dir, '*.dtb')):
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shutil.copy2(dt, dt_build_dir)
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# Bootloader 32.
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bootloader32_dir = os.path.join(gem5_system_src_dir, 'arm', 'simple_bootloader')
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# TODO use the buildroot cross compiler here, and remove the dependencies from configure.
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assert common.run_cmd(['make', '-C', bootloader32_dir]) == 0
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# bootloader
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shutil.copy2(os.path.join(bootloader32_dir, 'boot_emm.arm'), binaries_dir)
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# Bootloader 64.
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bootloader64_dir = os.path.join(gem5_system_src_dir, 'arm', 'aarch64_bootloader')
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# TODO cross_compile is ignored because the make does not use CC...
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assert common.run_cmd(['make', '-C', bootloader64_dir]) == 0
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shutil.copy2(os.path.join(bootloader64_dir, 'boot_emm.arm64'), binaries_dir)
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assert common.run_cmd(
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(
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[
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'scons',
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'-j', str(multiprocessing.cpu_count()),
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'--ignore-style',
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common.gem5_executable
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] +
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verbose +
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args.extra_scons_args
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),
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cwd=common.gem5_src_dir,
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extra_paths=[common.ccache_dir],
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) == 0
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term_src_dir = os.path.join(common.gem5_src_dir, 'util/term')
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m5term_build = os.path.join(term_src_dir, 'm5term')
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assert common.run_cmd(['make', '-C', term_src_dir]) == 0
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if os.path.exists(common.gem5_m5term):
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# Otherwise shutil.copy2 would fail with "Text file busy" if you
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# tried to rebuild while running m5term:
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# https://stackoverflow.com/questions/16764946/what-generates-the-text-file-busy-message-in-unix/52427512#52427512
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os.unlink(common.gem5_m5term)
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shutil.copy2(m5term_build, common.gem5_m5term)
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end_time = time.time()
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common.print_time(end_time - start_time)
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