source: mainline/boot/grub/meson.build

#
# Copyright (c) 2019 Jiří Zárevúcky
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# - Redistributions of source code must retain the above copyright
#   notice, this list of conditions and the following disclaimer.
# - Redistributions in binary form must reproduce the above copyright
#   notice, this list of conditions and the following disclaimer in the
#   documentation and/or other materials provided with the distribution.
# - The name of the author may not be used to endorse or promote products
#   derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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if GRUB_ARCH == 'pc'
        MULTIBOOT_CMD = 'multiboot'
        MODULE_CMD = 'module'
        INSMODS = [ 'insmod vbe', 'insmod vga' ]
elif GRUB_ARCH == 'efi'
        MULTIBOOT_CMD = 'multiboot2'
        MODULE_CMD = 'module2'
        INSMODS = [ 'insmod efi_gop', 'insmod efi_uga' ]
endif

# TODO
install_snippet = 'mkdir -p ${DIST_DIR}/`dirname @1@`; cp @0@ ${DIST_DIR}/@1@'
dist_dirname = 'grub_dist'

if GRUB_LOADER == 'multiboot'
        build_dist_text = []
        build_dist_deps = []
        foreach init : rd_init_binaries
                target = 'boot/' + run_command(basename, init[1], check: true).stdout().strip()

                build_dist_text += install_snippet.format(init[0].full_path(), target)
                build_dist_deps += init[0]
        endforeach

        LOADS = [ 'echo \'Loading kernel\'' ]
        LOADS += [ MULTIBOOT_CMD + ' /boot/kernel.elf' ]

        MODULES = rd_init + [ 'boot/initrd.img' ]

        foreach module : MODULES
                module = '/boot/' + run_command(basename, module, check: true).stdout().strip()
                LOADS += 'echo \'Loading @0@\''.format(module)
                LOADS += '@0@ @1@ @1@'.format(MODULE_CMD, module)
        endforeach
endif

if GRUB_LOADER == 'chainloader'
        # init binaries are already part of the chainloaded boot image.
        build_dist_text = [ install_snippet.format(boot_image.full_path(), 'boot/' + boot_image_name) ]
        build_dist_deps = [ boot_image ]

        LOADS = [
                'echo \'Loading ' + boot_image_name + '\'',
                'chainloader /boot/' + boot_image_name,
                'boot',
        ]
endif

build_dist_sh = configure_file(
        input: 'build_dist.sh.in',
        output: 'build_dist.sh',
        configuration: { 'text' : '\n'.join(build_dist_text) },
)


grub_cfg = configure_file(
        input: 'grub.cfg.in',
        output: 'grub.cfg',
        configuration: {
                'INSMODS' : '\n'.join(INSMODS),
                'RELEASE' : HELENOS_RELEASE,
                'LOADS'   : '\n'.join(LOADS),
        },
)

grub_dir = meson.current_source_dir() / BARCH + '-' + GRUB_ARCH

dist_dir = custom_target(dist_dirname,
        output: dist_dirname,
        input: [ build_dist_sh, grub_cfg, build_dist_deps ],
        command: [ sh, '@INPUT0@', '@OUTPUT@', grub_dir, '@INPUT1@' ],
)


# Create .iso image.

grub_image = 'boot/grub' / GRUB_ARCH + '.img'

if GRUB_ARCH == 'pc'
        genisoimage_args = [ '-eltorito-boot', grub_image, '-no-emul-boot', '-boot-info-table' ]
elif GRUB_ARCH == 'efi'
        if genisoimage_type == 'mkisofs'
                genisoimage_args = [ '-eltorito-platform', 'efi', '-eltorito-boot', grub_image, '-no-emul-boot' ]
        else
                genisoimage_args = [ '--efi-boot', grub_image ]
        endif
endif

image_iso = custom_target('image.iso',
        output: 'image.iso',
        input: dist_dir,
        command: [
                genisoimage,
                '-J',
                '-r',
                '-input-charset', 'utf-8',
                '-V', 'HelenOS-CD',
                genisoimage_args,
                '-o', '@OUTPUT@',
                '@INPUT@',
        ],
)

POST_INPUT = image_iso