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#
# Copyright (c) 2014, Intel Corporation.
#
# SPDX-License-Identifier: GPL-2.0-only
#
# DESCRIPTION
# This implements the 'bootimg-efi' source plugin class for 'wic'
#
# AUTHORS
# Tom Zanussi <tom.zanussi (at] linux.intel.com>
#
import logging
import os
import shutil
from wic import WicError
from wic.engine import get_custom_config
from wic.pluginbase import SourcePlugin
from wic.misc import (exec_cmd, exec_native_cmd,
get_bitbake_var, BOOTDD_EXTRA_SPACE)
logger = logging.getLogger('wic')
class BootimgEFIPlugin(SourcePlugin):
"""
Create EFI boot partition.
This plugin supports GRUB 2 and systemd-boot bootloaders.
"""
name = 'bootimg-efi'
@classmethod
def do_configure_grubefi(cls, hdddir, creator, cr_workdir, source_params):
"""
Create loader-specific (grub-efi) config
"""
configfile = creator.ks.bootloader.configfile
custom_cfg = None
if configfile:
custom_cfg = get_custom_config(configfile)
if custom_cfg:
# Use a custom configuration for grub
grubefi_conf = custom_cfg
logger.debug("Using custom configuration file "
"%s for grub.cfg", configfile)
else:
raise WicError("configfile is specified but failed to "
"get it from %s." % configfile)
initrd = source_params.get('initrd')
if initrd:
bootimg_dir = get_bitbake_var("DEPLOY_DIR_IMAGE")
if not bootimg_dir:
raise WicError("Couldn't find DEPLOY_DIR_IMAGE, exiting")
cp_cmd = "cp %s/%s %s" % (bootimg_dir, initrd, hdddir)
exec_cmd(cp_cmd, True)
else:
logger.debug("Ignoring missing initrd")
if not custom_cfg:
# Create grub configuration using parameters from wks file
bootloader = creator.ks.bootloader
title = source_params.get('title')
grubefi_conf = ""
grubefi_conf += "serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1\n"
grubefi_conf += "default=boot\n"
grubefi_conf += "timeout=%s\n" % bootloader.timeout
grubefi_conf += "menuentry '%s'{\n" % (title if title else "boot")
kernel = "/bzImage"
label = source_params.get('label')
label_conf = "root=%s" % creator.rootdev
if label:
label_conf = "LABEL=%s" % label
grubefi_conf += "linux %s %s rootwait %s\n" \
% (kernel, label_conf, bootloader.append)
if initrd:
grubefi_conf += "initrd /%s\n" % initrd
grubefi_conf += "}\n"
logger.debug("Writing grubefi config %s/hdd/boot/EFI/BOOT/grub.cfg",
cr_workdir)
cfg = open("%s/hdd/boot/EFI/BOOT/grub.cfg" % cr_workdir, "w")
cfg.write(grubefi_conf)
cfg.close()
@classmethod
def do_configure_systemdboot(cls, hdddir, creator, cr_workdir, source_params):
"""
Create loader-specific systemd-boot/gummiboot config
"""
install_cmd = "install -d %s/loader" % hdddir
exec_cmd(install_cmd)
install_cmd = "install -d %s/loader/entries" % hdddir
exec_cmd(install_cmd)
bootloader = creator.ks.bootloader
loader_conf = ""
loader_conf += "default boot\n"
loader_conf += "timeout %d\n" % bootloader.timeout
initrd = source_params.get('initrd')
if initrd:
# obviously we need to have a common common deploy var
bootimg_dir = get_bitbake_var("DEPLOY_DIR_IMAGE")
if not bootimg_dir:
raise WicError("Couldn't find DEPLOY_DIR_IMAGE, exiting")
cp_cmd = "cp %s/%s %s" % (bootimg_dir, initrd, hdddir)
exec_cmd(cp_cmd, True)
else:
logger.debug("Ignoring missing initrd")
logger.debug("Writing systemd-boot config "
"%s/hdd/boot/loader/loader.conf", cr_workdir)
cfg = open("%s/hdd/boot/loader/loader.conf" % cr_workdir, "w")
cfg.write(loader_conf)
cfg.close()
configfile = creator.ks.bootloader.configfile
custom_cfg = None
if configfile:
custom_cfg = get_custom_config(configfile)
if custom_cfg:
# Use a custom configuration for systemd-boot
boot_conf = custom_cfg
logger.debug("Using custom configuration file "
"%s for systemd-boots's boot.conf", configfile)
else:
raise WicError("configfile is specified but failed to "
"get it from %s.", configfile)
if not custom_cfg:
# Create systemd-boot configuration using parameters from wks file
kernel = "/bzImage"
title = source_params.get('title')
boot_conf = ""
boot_conf += "title %s\n" % (title if title else "boot")
boot_conf += "linux %s\n" % kernel
label = source_params.get('label')
label_conf = "LABEL=Boot root=%s" % creator.rootdev
if label:
label_conf = "LABEL=%s" % label
boot_conf += "options %s %s\n" % \
(label_conf, bootloader.append)
if initrd:
boot_conf += "initrd /%s\n" % initrd
logger.debug("Writing systemd-boot config "
"%s/hdd/boot/loader/entries/boot.conf", cr_workdir)
cfg = open("%s/hdd/boot/loader/entries/boot.conf" % cr_workdir, "w")
cfg.write(boot_conf)
cfg.close()
@classmethod
def do_configure_partition(cls, part, source_params, creator, cr_workdir,
oe_builddir, bootimg_dir, kernel_dir,
native_sysroot):
"""
Called before do_prepare_partition(), creates loader-specific config
"""
hdddir = "%s/hdd/boot" % cr_workdir
install_cmd = "install -d %s/EFI/BOOT" % hdddir
exec_cmd(install_cmd)
try:
if source_params['loader'] == 'grub-efi':
cls.do_configure_grubefi(hdddir, creator, cr_workdir, source_params)
elif source_params['loader'] == 'systemd-boot':
cls.do_configure_systemdboot(hdddir, creator, cr_workdir, source_params)
else:
raise WicError("unrecognized bootimg-efi loader: %s" % source_params['loader'])
except KeyError:
raise WicError("bootimg-efi requires a loader, none specified")
@classmethod
def do_prepare_partition(cls, part, source_params, creator, cr_workdir,
oe_builddir, bootimg_dir, kernel_dir,
rootfs_dir, native_sysroot):
"""
Called to do the actual content population for a partition i.e. it
'prepares' the partition to be incorporated into the image.
In this case, prepare content for an EFI (grub) boot partition.
"""
if not kernel_dir:
kernel_dir = get_bitbake_var("DEPLOY_DIR_IMAGE")
if not kernel_dir:
raise WicError("Couldn't find DEPLOY_DIR_IMAGE, exiting")
staging_kernel_dir = kernel_dir
hdddir = "%s/hdd/boot" % cr_workdir
install_cmd = "install -m 0644 %s/bzImage %s/bzImage" % \
(staging_kernel_dir, hdddir)
exec_cmd(install_cmd)
try:
if source_params['loader'] == 'grub-efi':
shutil.copyfile("%s/hdd/boot/EFI/BOOT/grub.cfg" % cr_workdir,
"%s/grub.cfg" % cr_workdir)
for mod in [x for x in os.listdir(kernel_dir) if x.startswith("grub-efi-")]:
cp_cmd = "cp %s/%s %s/EFI/BOOT/%s" % (kernel_dir, mod, hdddir, mod[9:])
exec_cmd(cp_cmd, True)
shutil.move("%s/grub.cfg" % cr_workdir,
"%s/hdd/boot/EFI/BOOT/grub.cfg" % cr_workdir)
elif source_params['loader'] == 'systemd-boot':
for mod in [x for x in os.listdir(kernel_dir) if x.startswith("systemd-")]:
cp_cmd = "cp %s/%s %s/EFI/BOOT/%s" % (kernel_dir, mod, hdddir, mod[8:])
exec_cmd(cp_cmd, True)
else:
raise WicError("unrecognized bootimg-efi loader: %s" %
source_params['loader'])
except KeyError:
raise WicError("bootimg-efi requires a loader, none specified")
startup = os.path.join(kernel_dir, "startup.nsh")
if os.path.exists(startup):
cp_cmd = "cp %s %s/" % (startup, hdddir)
exec_cmd(cp_cmd, True)
du_cmd = "du -bks %s" % hdddir
out = exec_cmd(du_cmd)
blocks = int(out.split()[0])
extra_blocks = part.get_extra_block_count(blocks)
if extra_blocks < BOOTDD_EXTRA_SPACE:
extra_blocks = BOOTDD_EXTRA_SPACE
blocks += extra_blocks
logger.debug("Added %d extra blocks to %s to get to %d total blocks",
extra_blocks, part.mountpoint, blocks)
# dosfs image, created by mkdosfs
bootimg = "%s/boot.img" % cr_workdir
label = part.label if part.label else "ESP"
dosfs_cmd = "mkdosfs -n %s -i %s -C %s %d" % \
(label, part.fsuuid, bootimg, blocks)
exec_native_cmd(dosfs_cmd, native_sysroot)
mcopy_cmd = "mcopy -i %s -s %s/* ::/" % (bootimg, hdddir)
exec_native_cmd(mcopy_cmd, native_sysroot)
chmod_cmd = "chmod 644 %s" % bootimg
exec_cmd(chmod_cmd)
du_cmd = "du -Lbks %s" % bootimg
out = exec_cmd(du_cmd)
bootimg_size = out.split()[0]
part.size = int(bootimg_size)
part.source_file = bootimg
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