# SPDX-License-Identifier: LGPL-2.1+ efi_headers = files(''' console.h crc32.h disk.h graphics.h linux.h measure.h missing_efi.h pe.h random-seed.h sha256.h shim.h splash.h util.h '''.split()) common_sources = ''' disk.c graphics.c measure.c pe.c util.c '''.split() systemd_boot_sources = ''' boot.c console.c crc32.c random-seed.c sha256.c shim.c '''.split() stub_sources = ''' linux.c splash.c stub.c '''.split() if conf.get('ENABLE_EFI') == 1 and get_option('gnu-efi') != 'false' efi_cc = get_option('efi-cc') if efi_cc.length() == 0 efi_cc = cc.cmd_array() endif efi_ld = get_option('efi-ld') if efi_ld == '' efi_ld = find_program('ld', required: true) endif efi_incdir = get_option('efi-includedir') gnu_efi_path_arch = '' foreach name : [gnu_efi_arch, EFI_MACHINE_TYPE_NAME] if (gnu_efi_path_arch == '' and name != '' and cc.has_header('@0@/@1@/efibind.h'.format(efi_incdir, name))) gnu_efi_path_arch = name endif endforeach if gnu_efi_path_arch != '' and EFI_MACHINE_TYPE_NAME == '' error('gnu-efi is available, but EFI_MACHINE_TYPE_NAME is unknown') endif efi_libdir = get_option('efi-libdir') if efi_libdir == '' # New location first introduced with gnu-efi 3.0.11 efi_libdir = join_paths('/usr/lib/gnuefi', EFI_MACHINE_TYPE_NAME) cmd = run_command('test', '-e', efi_libdir) if cmd.returncode() != 0 # Fall back to the old approach cmd = run_command(efi_cc + ['-print-multi-os-directory']) if cmd.returncode() == 0 path = join_paths('/usr/lib', cmd.stdout().strip()) cmd = run_command('realpath', '-e', path) if cmd.returncode() == 0 efi_libdir = cmd.stdout().strip() endif endif endif endif have_gnu_efi = gnu_efi_path_arch != '' and efi_libdir != '' else have_gnu_efi = false endif if get_option('gnu-efi') == 'true' and not have_gnu_efi error('gnu-efi support requested, but headers were not found') endif if have_gnu_efi efi_conf = configuration_data() efi_conf.set_quoted('EFI_MACHINE_TYPE_NAME', EFI_MACHINE_TYPE_NAME) efi_conf.set10('ENABLE_TPM', get_option('tpm')) efi_conf.set('SD_TPM_PCR', get_option('tpm-pcrindex')) efi_config_h = configure_file( output : 'efi_config.h', configuration : efi_conf) objcopy = find_program('objcopy') efi_location_map = [ # New locations first introduced with gnu-efi 3.0.11 [join_paths(efi_libdir, 'efi.lds'), join_paths(efi_libdir, 'crt0.o')], # Older locations... [join_paths(efi_libdir, 'gnuefi', 'elf_@0@_efi.lds'.format(gnu_efi_path_arch)), join_paths(efi_libdir, 'gnuefi', 'crt0-efi-@0@.o'.format(gnu_efi_path_arch))], [join_paths(efi_libdir, 'elf_@0@_efi.lds'.format(gnu_efi_path_arch)), join_paths(efi_libdir, 'crt0-efi-@0@.o'.format(gnu_efi_path_arch))]] efi_lds = '' foreach location : efi_location_map if efi_lds == '' cmd = run_command('test', '-f', location[0]) if cmd.returncode() == 0 efi_lds = location[0] efi_crt0 = location[1] endif endif endforeach if efi_lds == '' if get_option('gnu-efi') == 'true' error('gnu-efi support requested, but cannot find efi.lds') else have_gnu_efi = false endif endif endif if have_gnu_efi compile_args = ['-Wall', '-Wextra', '-std=gnu90', '-nostdinc', '-fpic', '-fshort-wchar', '-ffreestanding', '-fno-strict-aliasing', '-fno-stack-protector', '-Wsign-compare', '-Wno-missing-field-initializers', '-isystem', efi_incdir, '-isystem', join_paths(efi_incdir, gnu_efi_path_arch), '-include', efi_config_h, '-include', version_h] if efi_arch == 'x86_64' compile_args += ['-mno-red-zone', '-mno-sse', '-mno-mmx', '-DEFI_FUNCTION_WRAPPER', '-DGNU_EFI_USE_MS_ABI'] elif efi_arch == 'ia32' compile_args += ['-mno-sse', '-mno-mmx'] elif efi_arch == 'arm' compile_args += ['-mgeneral-regs-only'] endif if get_option('werror') == true compile_args += ['-Werror'] endif if get_option('buildtype') == 'debug' compile_args += ['-ggdb', '-O0'] elif get_option('buildtype') == 'debugoptimized' compile_args += ['-ggdb', '-Og'] else compile_args += ['-O2'] endif efi_ldflags = ['-T', efi_lds, '-shared', '-Bsymbolic', '-nostdlib', '-znocombreloc', '-L', efi_libdir, efi_crt0] if efi_arch == 'aarch64' or efi_arch == 'arm' # Aarch64 and ARM32 don't have an EFI capable objcopy. Use 'binary' # instead, and add required symbols manually. efi_ldflags += ['--defsym=EFI_SUBSYSTEM=0xa'] efi_format = ['-O', 'binary'] else efi_format = ['--target=efi-app-@0@'.format(gnu_efi_arch)] endif systemd_boot_objects = [] stub_objects = [] foreach file : common_sources + systemd_boot_sources + stub_sources o_file = custom_target(file + '.o', input : file, output : file + '.o', command : efi_cc + ['-c', '@INPUT@', '-o', '@OUTPUT@'] + compile_args, depend_files : efi_headers) if (common_sources + systemd_boot_sources).contains(file) systemd_boot_objects += o_file endif if (common_sources + stub_sources).contains(file) stub_objects += o_file endif endforeach libgcc_file_name = run_command(efi_cc + ['-print-libgcc-file-name']).stdout().strip() systemd_boot_efi_name = 'systemd-boot@0@.efi'.format(EFI_MACHINE_TYPE_NAME) stub_efi_name = 'linux@0@.efi.stub'.format(EFI_MACHINE_TYPE_NAME) no_undefined_symbols = find_program('no-undefined-symbols.sh') foreach tuple : [['systemd_boot.so', systemd_boot_efi_name, systemd_boot_objects], ['stub.so', stub_efi_name, stub_objects]] so = custom_target( tuple[0], input : tuple[2], output : tuple[0], command : [efi_ld, '-o', '@OUTPUT@'] + efi_ldflags + tuple[2] + ['-lefi', '-lgnuefi', libgcc_file_name]) if want_tests != 'false' test('no-undefined-symbols-' + tuple[0], no_undefined_symbols, args : [so]) endif stub = custom_target( tuple[1], input : so, output : tuple[1], command : [objcopy, '-j', '.text', '-j', '.sdata', '-j', '.data', '-j', '.dynamic', '-j', '.dynsym', '-j', '.rel*'] + efi_format + ['@INPUT@', '@OUTPUT@'], install : true, install_dir : bootlibdir) set_variable(tuple[0].underscorify(), so) set_variable(tuple[0].underscorify() + '_stub', stub) endforeach ############################################################ test_efi_disk_img = custom_target( 'test-efi-disk.img', input : [systemd_boot_so, stub_so_stub], output : 'test-efi-disk.img', command : [test_efi_create_disk_sh, '@OUTPUT@', '@INPUT0@', '@INPUT1@', splash_bmp]) endif