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# SPDX-License-Identifier: LGPL-2.1+
efi_headers = files('''
console.h
disk.h
graphics.h
linux.h
measure.h
pe.h
splash.h
util.h
shim.h
'''.split())
common_sources = '''
disk.c
graphics.c
measure.c
pe.c
util.c
'''.split()
systemd_boot_sources = '''
boot.c
console.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 == ''
ret = run_command(efi_cc + ['-print-multi-os-directory'])
if ret.returncode() == 0
path = join_paths('/usr/lib', ret.stdout().strip())
ret = run_command('realpath', '-e', path)
if ret.returncode() == 0
efi_libdir = ret.stdout().strip()
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_ldsdir = get_option('efi-ldsdir')
arch_lds = 'elf_@0@_efi.lds'.format(gnu_efi_path_arch)
if efi_ldsdir == ''
efi_ldsdir = join_paths(efi_libdir, 'gnuefi')
cmd = run_command('test', '-f', join_paths(efi_ldsdir, arch_lds))
if cmd.returncode() != 0
efi_ldsdir = efi_libdir
cmd = run_command('test', '-f', join_paths(efi_ldsdir, arch_lds))
if cmd.returncode() != 0
error('Cannot find @0@'.format(arch_lds))
endif
endif
endif
compile_args = ['-Wall',
'-Wextra',
'-std=gnu90',
'-nostdinc',
'-ggdb', '-O0',
'-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']
endif
efi_ldflags = ['-T',
join_paths(efi_ldsdir, arch_lds),
'-shared',
'-Bsymbolic',
'-nostdlib',
'-znocombreloc',
'-L', efi_libdir,
join_paths(efi_ldsdir, 'crt0-efi-@0@.o'.format(gnu_efi_path_arch))]
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
endif
############################################################
if have_gnu_efi
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
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