196 lines
6.9 KiB
Python
196 lines
6.9 KiB
Python
# ex:ts=4:sw=4:sts=4:et
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# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
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#
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# Copyright (c) 2014, Intel Corporation.
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# All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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# DESCRIPTION
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# This implements the 'bootimg-pcbios' source plugin class for 'wic'
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#
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# AUTHORS
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# Tom Zanussi <tom.zanussi (at] linux.intel.com>
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#
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import os
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from wic.utils.errors import ImageError
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from wic import kickstart, msger
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from wic.utils import runner
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from wic.pluginbase import SourcePlugin
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from wic.utils.oe.misc import exec_cmd, exec_native_cmd, \
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get_bitbake_var, BOOTDD_EXTRA_SPACE
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class BootimgPcbiosPlugin(SourcePlugin):
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name = 'bootimg-pcbios'
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@classmethod
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def do_install_disk(self, disk, disk_name, cr, workdir, oe_builddir,
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bootimg_dir, kernel_dir, native_sysroot):
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"""
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Called after all partitions have been prepared and assembled into a
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disk image. In this case, we install the MBR.
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"""
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mbrfile = "%s/syslinux/" % bootimg_dir
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if cr._ptable_format == 'msdos':
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mbrfile += "mbr.bin"
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if not os.path.exists(mbrfile):
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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)
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full_path = cr._full_path(workdir, disk_name, "direct")
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msger.debug("Installing MBR on disk %s as %s with size %s bytes" \
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% (disk_name, full_path, disk['min_size']))
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rc = runner.show(['dd', 'if=%s' % mbrfile,
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'of=%s' % full_path, 'conv=notrunc'])
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if rc != 0:
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raise ImageError("Unable to set MBR to %s" % full_path)
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@classmethod
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def do_configure_partition(self, part, source_params, cr, cr_workdir,
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oe_builddir, bootimg_dir, kernel_dir,
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native_sysroot):
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"""
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Called before do_prepare_partition(), creates syslinux config
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"""
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hdddir = "%s/hdd/boot" % cr_workdir
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rm_cmd = "rm -rf " + cr_workdir
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exec_cmd(rm_cmd)
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install_cmd = "install -d %s" % hdddir
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exec_cmd(install_cmd)
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splash = os.path.join(cr_workdir, "/hdd/boot/splash.jpg")
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if os.path.exists(splash):
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splashline = "menu background splash.jpg"
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else:
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splashline = ""
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(rootdev, root_part_uuid) = cr._get_boot_config()
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options = cr.ks.handler.bootloader.appendLine
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syslinux_conf = ""
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syslinux_conf += "PROMPT 0\n"
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timeout = kickstart.get_timeout(cr.ks)
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if not timeout:
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timeout = 0
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syslinux_conf += "TIMEOUT " + str(timeout) + "\n"
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syslinux_conf += "\n"
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syslinux_conf += "ALLOWOPTIONS 1\n"
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syslinux_conf += "SERIAL 0 115200\n"
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syslinux_conf += "\n"
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if splashline:
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syslinux_conf += "%s\n" % splashline
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syslinux_conf += "DEFAULT boot\n"
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syslinux_conf += "LABEL boot\n"
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kernel = "/vmlinuz"
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syslinux_conf += "KERNEL " + kernel + "\n"
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if cr._ptable_format == 'msdos':
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rootstr = rootdev
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else:
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raise ImageError("Unsupported partition table format found")
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syslinux_conf += "APPEND label=boot root=%s %s\n" % (rootstr, options)
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msger.debug("Writing syslinux config %s/hdd/boot/syslinux.cfg" \
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% cr_workdir)
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cfg = open("%s/hdd/boot/syslinux.cfg" % cr_workdir, "w")
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cfg.write(syslinux_conf)
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cfg.close()
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@classmethod
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def do_prepare_partition(self, part, source_params, cr, cr_workdir,
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oe_builddir, bootimg_dir, kernel_dir,
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rootfs_dir, native_sysroot):
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"""
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Called to do the actual content population for a partition i.e. it
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'prepares' the partition to be incorporated into the image.
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In this case, prepare content for legacy bios boot partition.
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"""
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def _has_syslinux(dir):
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if dir:
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syslinux = "%s/syslinux" % dir
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if os.path.exists(syslinux):
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return True
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return False
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if not _has_syslinux(bootimg_dir):
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bootimg_dir = get_bitbake_var("STAGING_DATADIR")
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if not bootimg_dir:
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msger.error("Couldn't find STAGING_DATADIR, exiting\n")
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if not _has_syslinux(bootimg_dir):
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msger.error("Please build syslinux first\n")
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# just so the result notes display it
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cr.set_bootimg_dir(bootimg_dir)
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staging_kernel_dir = kernel_dir
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hdddir = "%s/hdd/boot" % cr_workdir
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install_cmd = "install -m 0644 %s/bzImage %s/vmlinuz" \
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% (staging_kernel_dir, hdddir)
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exec_cmd(install_cmd)
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install_cmd = "install -m 444 %s/syslinux/ldlinux.sys %s/ldlinux.sys" \
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% (bootimg_dir, hdddir)
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exec_cmd(install_cmd)
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du_cmd = "du -bks %s" % hdddir
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out = exec_cmd(du_cmd)
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blocks = int(out.split()[0])
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extra_blocks = part.get_extra_block_count(blocks)
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if extra_blocks < BOOTDD_EXTRA_SPACE:
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extra_blocks = BOOTDD_EXTRA_SPACE
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blocks += extra_blocks
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msger.debug("Added %d extra blocks to %s to get to %d total blocks" % \
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(extra_blocks, part.mountpoint, blocks))
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# Ensure total sectors is an integral number of sectors per
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# track or mcopy will complain. Sectors are 512 bytes, and we
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# generate images with 32 sectors per track. This calculation is
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# done in blocks, thus the mod by 16 instead of 32.
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blocks += (16 - (blocks % 16))
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# dosfs image, created by mkdosfs
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bootimg = "%s/boot.img" % cr_workdir
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dosfs_cmd = "mkdosfs -n boot -S 512 -C %s %d" % (bootimg, blocks)
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exec_native_cmd(dosfs_cmd, native_sysroot)
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mcopy_cmd = "mcopy -i %s -s %s/* ::/" % (bootimg, hdddir)
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exec_native_cmd(mcopy_cmd, native_sysroot)
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syslinux_cmd = "syslinux %s" % bootimg
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exec_native_cmd(syslinux_cmd, native_sysroot)
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chmod_cmd = "chmod 644 %s" % bootimg
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exec_cmd(chmod_cmd)
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du_cmd = "du -Lbks %s" % bootimg
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out = exec_cmd(du_cmd)
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bootimg_size = out.split()[0]
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part.set_size(bootimg_size)
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part.set_source_file(bootimg)
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