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# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
#
# Copyright (c) 2014, Intel Corporation.
# All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# DESCRIPTION
# This implements the 'bootimg-pcbios' source plugin class for 'wic'
#
# AUTHORS
# Tom Zanussi <tom.zanussi (at] linux.intel.com>
#
import os
from wic.utils.errors import ImageError
from wic import msger
from wic.utils import runner
from wic.utils.misc import get_custom_config
from wic.pluginbase import SourcePlugin
from wic.utils.oe.misc import exec_cmd, exec_native_cmd, \
get_bitbake_var, BOOTDD_EXTRA_SPACE
class BootimgPcbiosPlugin(SourcePlugin):
"""
Create MBR boot partition and install syslinux on it.
"""
name = 'bootimg-pcbios'
@classmethod
def do_install_disk(cls, disk, disk_name, creator, workdir, oe_builddir,
bootimg_dir, kernel_dir, native_sysroot):
"""
Called after all partitions have been prepared and assembled into a
disk image. In this case, we install the MBR.
"""
mbrfile = "%s/syslinux/" % bootimg_dir
if creator.ptable_format == 'msdos':
mbrfile += "mbr.bin"
elif creator.ptable_format == 'gpt':
mbrfile += "gptmbr.bin"
else:
msger.error("Unsupported partition table: %s" % creator.ptable_format)
if not os.path.exists(mbrfile):
msger.error("Couldn't find %s. If using the -e option, do you "
"have the right MACHINE set in local.conf? If not, "
"is the bootimg_dir path correct?" % mbrfile)
full_path = creator._full_path(workdir, disk_name, "direct")
msger.debug("Installing MBR on disk %s as %s with size %s bytes" \
% (disk_name, full_path, disk['min_size']))
rcode = runner.show(['dd', 'if=%s' % mbrfile,
'of=%s' % full_path, 'conv=notrunc'])
if rcode != 0:
raise ImageError("Unable to set MBR to %s" % full_path)
@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 syslinux config
"""
hdddir = "%s/hdd/boot" % cr_workdir
install_cmd = "install -d %s" % hdddir
exec_cmd(install_cmd)
bootloader = creator.ks.bootloader
custom_cfg = None
if bootloader.configfile:
custom_cfg = get_custom_config(bootloader.configfile)
if custom_cfg:
# Use a custom configuration for grub
syslinux_conf = custom_cfg
msger.debug("Using custom configuration file "
"%s for syslinux.cfg" % bootloader.configfile)
else:
msger.error("configfile is specified but failed to "
"get it from %s." % bootloader.configfile)
if not custom_cfg:
# Create syslinux configuration using parameters from wks file
splash = os.path.join(cr_workdir, "/hdd/boot/splash.jpg")
if os.path.exists(splash):
splashline = "menu background splash.jpg"
else:
splashline = ""
syslinux_conf = ""
syslinux_conf += "PROMPT 0\n"
syslinux_conf += "TIMEOUT " + str(bootloader.timeout) + "\n"
syslinux_conf += "\n"
syslinux_conf += "ALLOWOPTIONS 1\n"
syslinux_conf += "SERIAL 0 115200\n"
syslinux_conf += "\n"
if splashline:
syslinux_conf += "%s\n" % splashline
syslinux_conf += "DEFAULT boot\n"
syslinux_conf += "LABEL boot\n"
kernel = "/vmlinuz"
syslinux_conf += "KERNEL " + kernel + "\n"
syslinux_conf += "APPEND label=boot root=%s %s\n" % \
(creator.rootdev, bootloader.append)
msger.debug("Writing syslinux config %s/hdd/boot/syslinux.cfg" \
% cr_workdir)
cfg = open("%s/hdd/boot/syslinux.cfg" % cr_workdir, "w")
cfg.write(syslinux_conf)
cfg.close()
@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 legacy bios boot partition.
"""
def _has_syslinux(dirname):
if dirname:
syslinux = "%s/syslinux" % dirname
if os.path.exists(syslinux):
return True
return False
if not _has_syslinux(bootimg_dir):
bootimg_dir = get_bitbake_var("STAGING_DATADIR")
if not bootimg_dir:
msger.error("Couldn't find STAGING_DATADIR, exiting\n")
if not _has_syslinux(bootimg_dir):
msger.error("Please build syslinux first\n")
# just so the result notes display it
creator.set_bootimg_dir(bootimg_dir)
staging_kernel_dir = kernel_dir
hdddir = "%s/hdd/boot" % cr_workdir
install_cmd = "install -m 0644 %s/bzImage %s/vmlinuz" \
% (staging_kernel_dir, hdddir)
exec_cmd(install_cmd)
install_cmd = "install -m 444 %s/syslinux/ldlinux.sys %s/ldlinux.sys" \
% (bootimg_dir, hdddir)
exec_cmd(install_cmd)
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
msger.debug("Added %d extra blocks to %s to get to %d total blocks" % \
(extra_blocks, part.mountpoint, blocks))
# Ensure total sectors is an integral number of sectors per
# track or mcopy will complain. Sectors are 512 bytes, and we
# generate images with 32 sectors per track. This calculation is
# done in blocks, thus the mod by 16 instead of 32.
blocks += (16 - (blocks % 16))
# dosfs image, created by mkdosfs
bootimg = "%s/boot.img" % cr_workdir
dosfs_cmd = "mkdosfs -n boot -S 512 -C %s %d" % (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)
syslinux_cmd = "syslinux %s" % bootimg
exec_native_cmd(syslinux_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(out.split()[0])
part.source_file = bootimg
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