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# SPDX-License-Identifier: LGPL-2.1-or-later
efi_config_h_dir = meson.current_build_dir()
efi_addon = ''
libefitest = static_library(
'efitest',
files(
'bcd.c',
'efi-string.c',
),
build_by_default : false,
include_directories : [
basic_includes,
include_directories('.'),
],
dependencies : userspace)
efitest_base = {
'link_with' : [
libefitest,
libshared,
],
}
efi_test_template = test_template + efitest_base
efi_fuzz_template = fuzz_template + efitest_base
executables += [
efi_test_template + {
'sources' : files('test-bcd.c'),
'dependencies' : libzstd_cflags,
'conditions' : ['ENABLE_BOOTLOADER', 'HAVE_ZSTD'],
},
efi_test_template + {
'sources' : files('test-efi-string.c'),
'conditions' : ['ENABLE_BOOTLOADER'],
},
efi_fuzz_template + {
'sources' : files('fuzz-bcd.c'),
},
efi_fuzz_template + {
'sources' : files('fuzz-efi-string.c'),
},
efi_fuzz_template + {
'sources' : files('fuzz-efi-osrel.c'),
},
efi_fuzz_template + {
'sources' : files('fuzz-efi-printf.c'),
},
]
if conf.get('ENABLE_BOOTLOADER') != 1
subdir_done()
endif
efi_conf = configuration_data()
efi_conf.set10('ENABLE_TPM', get_option('tpm'))
foreach ctype : ['color-normal', 'color-entry', 'color-highlight', 'color-edit']
c = get_option('efi-' + ctype).split(',')
efi_conf.set(ctype.underscorify().to_upper(), 'EFI_TEXT_ATTR(@0@, @1@)'.format(
'EFI_' + c[0].strip().underscorify().to_upper(),
'EFI_' + c[1].strip().underscorify().to_upper()))
endforeach
efi_conf.set_quoted('PROJECT_VERSION', project_major_version)
efi_conf.set_quoted('VERSION_TAG', version_tag)
efi_conf.set('PROJECT_URL', conf.get('PROJECT_URL'))
if meson.is_cross_build() and get_option('sbat-distro') == 'auto'
warning('Auto detection of SBAT information not supported when cross-building, disabling SBAT.')
elif get_option('sbat-distro') != ''
efi_conf.set_quoted('SBAT_PROJECT', meson.project_name())
if get_option('sbat-distro-generation') < 1
error('SBAT Distro Generation must be a positive integer')
endif
efi_conf.set('SBAT_DISTRO_GENERATION', get_option('sbat-distro-generation'))
foreach sbatvar : [['sbat-distro', 'ID'],
['sbat-distro-summary', 'NAME'],
['sbat-distro-url', 'BUG_REPORT_URL']]
value = get_option(sbatvar[0])
if (value == '' or value == 'auto') and not meson.is_cross_build()
cmd = 'if [ -e /etc/os-release ]; then . /etc/os-release; else . /usr/lib/os-release; fi; echo $@0@'.format(sbatvar[1])
value = run_command(sh, '-c', cmd, check: true).stdout().strip()
endif
if value == ''
error('Required @0@ option not set and autodetection failed'.format(sbatvar[0]))
endif
efi_conf.set_quoted(sbatvar[0].underscorify().to_upper(), value)
endforeach
pkgname = get_option('sbat-distro-pkgname')
if pkgname == ''
pkgname = meson.project_name()
endif
efi_conf.set_quoted('SBAT_DISTRO_PKGNAME', pkgname)
pkgver = get_option('sbat-distro-version')
if pkgver == ''
# This is determined during build, not configuration, so we can't display it yet.
efi_conf.set('SBAT_DISTRO_VERSION', 'GIT_VERSION')
else
efi_conf.set_quoted('SBAT_DISTRO_VERSION', pkgver)
endif
endif
summary({'UEFI architectures' : efi_arch + (efi_arch_alt == '' ? '' : ', ' + efi_arch_alt)},
section : 'UEFI')
if efi_conf.get('SBAT_DISTRO', '') != ''
summary({
'SBAT distro': efi_conf.get('SBAT_DISTRO'),
'SBAT distro generation': efi_conf.get('SBAT_DISTRO_GENERATION'),
'SBAT distro version': efi_conf.get('SBAT_DISTRO_VERSION'),
'SBAT distro summary': efi_conf.get('SBAT_DISTRO_SUMMARY'),
'SBAT distro URL': efi_conf.get('SBAT_DISTRO_URL')},
section : 'UEFI')
endif
configure_file(
output : 'efi_config.h',
configuration : efi_conf)
############################################################
efi_includes = [
build_dir_include,
fundamental_include,
include_directories('.'),
]
efi_c_args = [
'-DSD_BOOT=1',
'-ffreestanding',
'-fno-strict-aliasing',
'-fshort-wchar',
'-include', 'efi_config.h',
]
efi_c_args += cc.get_supported_arguments(
'-fwide-exec-charset=UCS2',
# gcc docs says this is required for ms_abi to work correctly.
'-maccumulate-outgoing-args',
'-mstack-protector-guard=global',
)
# Debug information has little value in release builds as no normal human being knows
# how to attach a debugger to EFI binaries running on real hardware. Anyone who does
# certainly has the means to do their own dev build.
if get_option('mode') == 'developer' and get_option('debug')
efi_c_args += '-DEFI_DEBUG'
endif
efi_c_ld_args = [
'-lgcc',
'-nostdlib',
'-static-pie',
'-Wl,--entry=efi_main',
'-Wl,--fatal-warnings',
# These flags should be passed by -static-pie, but for whatever reason the flag translation
# is not enabled on all architectures. Not passing `-static` would just allow the linker to
# use dynamic libraries, (which we can't/don't use anyway). But if `-pie` is missing and the
# gcc build does not default to `-pie` we get a regular (no-pie) binary that will be
# rightfully rejected by elf2efi. Note that meson also passes `-pie` to the linker driver,
# but it is overridden by our `-static-pie`. We also need to pass these directly to the
# linker as `-static`+`-pie` seem to get translated differently.
'-Wl,-static,-pie,--no-dynamic-linker,-z,text',
# EFI has 4KiB pages.
'-z', 'common-page-size=4096',
'-z', 'max-page-size=4096',
'-z', 'noexecstack',
'-z', 'relro',
'-z', 'separate-code',
]
efi_c_ld_args += cc.get_supported_link_arguments(
# binutils >= 2.38
'-Wl,-z,nopack-relative-relocs',
)
# efi_c_args is explicitly passed to targets so that they can override distro-provided flags
# that should not be used for EFI binaries.
efi_disabled_c_args = cc.get_supported_arguments(
'-fcf-protection=none',
'-fno-asynchronous-unwind-tables',
'-fno-exceptions',
'-fno-unwind-tables',
)
efi_override_options = [
'b_coverage=false',
'b_pgo=off',
]
if get_option('b_sanitize') == 'undefined'
efi_disabled_c_args += cc.get_supported_arguments('-fno-sanitize-link-runtime')
else
efi_disabled_c_args += cc.get_supported_arguments('-fno-sanitize=all')
efi_override_options += 'b_sanitize=none'
endif
efi_c_args += efi_disabled_c_args
efi_c_ld_args += efi_disabled_c_args
if cc.get_id() == 'clang'
# clang is too picky sometimes.
efi_c_args += '-Wno-unused-command-line-argument'
efi_c_ld_args += '-Wno-unused-command-line-argument'
endif
efi_arch_c_args = {
'aarch64' : ['-mgeneral-regs-only'],
'arm' : ['-mgeneral-regs-only'],
# Until -mgeneral-regs-only is supported in LoongArch, use the following option instead:
'loongarch64' : ['-mno-lsx', '-mno-lasx'],
# Pass -m64/32 explicitly to make building on x32 work.
'x86_64' : ['-m64', '-march=x86-64', '-mno-red-zone', '-mgeneral-regs-only'],
'x86' : ['-m32', '-march=i686', '-mgeneral-regs-only', '-malign-double'],
}
efi_arch_c_ld_args = {
# libgcc is not compiled with -fshort-wchar, but it does not use it anyways,
# so it's fine to link against it.
'arm' : cc.get_supported_link_arguments('-Wl,--no-wchar-size-warning'),
'x86_64' : ['-m64'],
'x86' : ['-m32'],
}
linker_sanity_code = 'void a(void) {}; void _start(void) { a(); }'
linker_sanity_args = ['-nostdlib', '-Wl,--fatal-warnings']
if not cc.links(linker_sanity_code,
name : 'linker supports -static-pie',
args : [linker_sanity_args, '-static-pie'])
error('Linker does not support -static-pie.')
endif
# https://github.com/llvm/llvm-project/issues/67152
if not cc.links(linker_sanity_code,
name : 'linker supports LTO with -nostdlib',
args : [linker_sanity_args, '-flto'])
efi_c_args += '-fno-lto'
efi_c_ld_args += '-fno-lto'
endif
# https://github.com/llvm/llvm-project/issues/61101
if efi_cpu_family_alt == 'x86' and not cc.links(linker_sanity_code,
name : 'linker supports LTO with -nostdlib (x86)',
args : [linker_sanity_args, '-flto', '-m32'])
efi_arch_c_args += { 'x86' : efi_arch_c_args['x86'] + '-fno-lto' }
efi_arch_c_ld_args += { 'x86' : efi_arch_c_ld_args['x86'] + '-fno-lto' }
endif
############################################################
libefi_sources = files(
'console.c',
'device-path-util.c',
'devicetree.c',
'drivers.c',
'efi-string.c',
'efivars.c',
'export-vars.c',
'graphics.c',
'initrd.c',
'log.c',
'measure.c',
'part-discovery.c',
'pe.c',
'random-seed.c',
'secure-boot.c',
'shim.c',
'smbios.c',
'ticks.c',
'util.c',
'vmm.c',
)
systemd_boot_sources = files(
'boot.c',
)
stub_sources = files(
'cpio.c',
'linux.c',
'splash.c',
'stub.c',
)
addon_sources = files(
'addon.c',
)
if get_option('b_sanitize') == 'undefined'
libefi_sources += files('ubsan.c')
endif
if host_machine.cpu_family() in ['x86', 'x86_64']
stub_sources += files('linux_x86.c')
endif
# BCD parser only makes sense on arches that Windows supports.
if host_machine.cpu_family() in ['aarch64', 'arm', 'x86_64', 'x86']
systemd_boot_sources += files('bcd.c')
endif
boot_targets = []
efi_elf_binaries = []
efi_archspecs = [
{
'arch' : efi_arch,
'c_args' : [
efi_c_args,
'-DEFI_MACHINE_TYPE_NAME="' + efi_arch + '"',
efi_arch_c_args.get(host_machine.cpu_family(), []),
],
'link_args' : [
efi_c_ld_args,
efi_arch_c_ld_args.get(host_machine.cpu_family(), []),
],
},
]
if efi_arch_alt != ''
efi_archspecs += {
'arch' : efi_arch_alt,
'c_args' : [
efi_c_args,
'-DEFI_MACHINE_TYPE_NAME="' + efi_arch_alt + '"',
efi_arch_c_args.get(efi_cpu_family_alt, []),
],
'link_args' : [
efi_c_ld_args,
efi_arch_c_ld_args.get(efi_cpu_family_alt, []),
],
}
endif
foreach archspec : efi_archspecs
libefi = static_library(
'efi' + archspec['arch'],
fundamental_sources,
libefi_sources,
version_h,
include_directories : efi_includes,
c_args : archspec['c_args'],
gnu_symbol_visibility : 'hidden',
override_options : efi_override_options,
pic : true)
kwargs = {
'include_directories' : efi_includes,
'c_args' : archspec['c_args'],
'link_args' : archspec['link_args'],
'gnu_symbol_visibility' : 'hidden',
'override_options' : efi_override_options,
'pie' : true,
}
efi_elf_binaries += executable(
'systemd-boot' + archspec['arch'],
sources : [systemd_boot_sources, version_h],
link_with : libefi,
name_suffix : 'elf',
kwargs : kwargs)
efi_elf_binaries += executable(
'linux' + archspec['arch'],
sources : [stub_sources, version_h],
link_with : libefi,
name_suffix : 'elf.stub',
kwargs : kwargs)
efi_elf_binaries += executable(
'addon' + archspec['arch'],
sources : [addon_sources, version_h],
name_suffix : 'elf.stub',
kwargs : kwargs)
endforeach
foreach efi_elf_binary : efi_elf_binaries
name = efi_elf_binary.name()
name += name.startswith('systemd-boot') ? '.efi' : '.efi.stub'
# For the addon, given it's empty, we need to explicitly reserve space in the header to account for
# the sections that ukify will add.
if name.startswith('linux')
minimum_sections = get_option('efi-stub-extra-sections')
elif name.startswith('addon')
minimum_sections = get_option('efi-addon-extra-sections')
else
minimum_sections = 0
endif
exe = custom_target(
name,
output : name,
input : efi_elf_binary,
install : true,
install_dir : bootlibdir,
install_tag : 'systemd-boot',
command : [
elf2efi_py,
'--version-major=' + project_major_version,
'--version-minor=' + project_minor_version,
'--efi-major=1',
'--efi-minor=1',
'--subsystem=10',
'--minimum-sections=@0@'.format(minimum_sections),
'--copy-sections=.sbat,.sdmagic,.osrel',
'@INPUT@',
'@OUTPUT@',
])
boot_targets += exe
if name.startswith('linux')
boot_stubs += exe
endif
# This is supposed to match exactly one time
if name == 'addon@0@.efi.stub'.format(efi_arch)
efi_addon = exe.full_path()
endif
test('check-alignment-@0@'.format(name),
check_efi_alignment_py,
args : exe.full_path(),
suite : 'efi')
endforeach
alias_target('systemd-boot', boot_targets)
|