diff options
Diffstat (limited to 'src/boot/efi/meson.build')
| -rw-r--r-- | src/boot/efi/meson.build | 176 |
1 files changed, 175 insertions, 1 deletions
diff --git a/src/boot/efi/meson.build b/src/boot/efi/meson.build index 6677dc65d8..297eb0f5ee 100644 --- a/src/boot/efi/meson.build +++ b/src/boot/efi/meson.build @@ -57,7 +57,7 @@ elif get_option('sbat-distro') != '' endif endif -summary({'UEFI architecture' : efi_arch}, +summary({'UEFI architectures' : efi_arch + (efi_arch_alt == '' ? '' : ', ' + efi_arch_alt)}, section : 'UEFI') if efi_conf.get('SBAT_DISTRO', '') != '' @@ -76,6 +76,97 @@ configure_file( ############################################################ +efi_includes = [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', +) + +efi_c_ld_args = [ + # We only support bfd. gold is going away, lld has issues with LTO on x86 + # and mold does not support linker scripts. + '-fuse-ld=bfd', + + '-lgcc', + '-nostdlib', + '-static-pie', + '-Wl,--entry=efi_main', + '-Wl,--fatal-warnings', + + # These flags should be passed by -static-pie, but seem to be missing sometimes. + '-Wl,--no-dynamic-linker', + '-z', 'text', + + # EFI has 4KiB pages. + '-z', 'common-page-size=4096', + '-z', 'max-page-size=4096', + + '-z', 'noexecstack', + '-z', 'norelro', + '-T' + elf2efi_lds, +] + +# 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-trapv', + '-fno-sanitize=all', + '-fno-stack-clash-protection', + '-fno-stack-protector', + '-fno-unwind-tables', +) +efi_c_args += efi_disabled_c_args +efi_c_ld_args += efi_disabled_c_args +efi_override_options = [ + 'b_coverage=false', + 'b_pgo=off', + 'b_sanitize=none', +] + +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 + +if host_machine.cpu_family() == 'arm' + # libgcc is not compiled with -fshort-wchar, but it does not use it anyways, + # so it's fine to link against it. + efi_c_ld_args += '-Wl,--no-wchar-size-warning' +endif + +efi_c_args_primary = [efi_c_args, '-DEFI_MACHINE_TYPE_NAME="' + efi_arch + '"'] +efi_c_args_alt = [efi_c_args, '-DEFI_MACHINE_TYPE_NAME="' + efi_arch_alt + '"'] +efi_c_ld_args_primary = efi_c_ld_args +efi_c_ld_args_alt = efi_c_ld_args + +efi_c_args_primary += { + 'aarch64' : ['-mgeneral-regs-only'], + 'arm' : ['-mgeneral-regs-only'], + 'x86_64' : ['-march=x86-64', '-mno-red-zone', '-mgeneral-regs-only'], + 'x86' : ['-march=i686', '-mgeneral-regs-only'], +}.get(host_machine.cpu_family(), []) + +if efi_arch_alt == 'ia32' + efi_c_args_alt += ['-m32', '-march=i686', '-mgeneral-regs-only'] + efi_c_ld_args_alt += '-m32' +endif + +############################################################ + libefi_sources = files( 'console.c', 'device-path-util.c', @@ -155,3 +246,86 @@ if host_machine.cpu_family() in ['aarch64', 'arm', 'x86_64', 'x86'] }, ] endif + +boot_targets = [] +efi_elf_binaries = [] +efi_archspecs = [ + { + 'arch' : efi_arch, + 'c_args' : efi_c_args_primary, + 'link_args' : efi_c_ld_args_primary, + }, +] +if efi_arch_alt != '' + efi_archspecs += { + 'arch' : efi_arch_alt, + 'c_args' : efi_c_args_alt, + 'link_args' : efi_c_ld_args_alt, + } +endif + +foreach archspec : efi_archspecs + libefi = static_library( + 'efi' + archspec['arch'], + fundamental_sources, + libefi_sources, + include_directories : efi_includes, + c_args : archspec['c_args'], + dependencies : versiondep, + gnu_symbol_visibility : 'hidden', + override_options : efi_override_options, + pic : true) + + efi_elf_binaries += executable( + 'systemd-boot' + archspec['arch'], + systemd_boot_sources, + include_directories : efi_includes, + c_args : archspec['c_args'], + link_args : archspec['link_args'], + link_with : libefi, + link_depends : elf2efi_lds, + dependencies : versiondep, + gnu_symbol_visibility : 'hidden', + override_options : efi_override_options, + name_suffix : 'elf', + pie : true) + + efi_elf_binaries += executable( + 'linux' + archspec['arch'], + stub_sources, + include_directories : efi_includes, + c_args : archspec['c_args'], + link_args : archspec['link_args'], + link_with : libefi, + link_depends : elf2efi_lds, + dependencies : versiondep, + gnu_symbol_visibility : 'hidden', + override_options : efi_override_options, + name_suffix : 'elf.stub', + pie : true) +endforeach + +foreach efi_elf_binary : efi_elf_binaries + # FIXME: Use build_tgt.name() with meson >= 0.54.0 + name = fs.name(efi_elf_binary.full_path()).split('.')[0] + name += name.startswith('linux') ? '.efi.stub' : '.efi' + boot_targets += custom_target( + name, + output : name, + input : efi_elf_binary, + install : true, + install_dir : bootlibdir, + install_tag : 'systemd-boot', + command : [ + elf2efi_py, + '--version-major=' + meson.project_version(), + '--version-minor=0', + '--efi-major=1', + '--efi-minor=1', + '--subsystem=10', + '@INPUT@', + '@OUTPUT@', + ]) +endforeach + +alias_target('systemd-boot', boot_targets) |