| # 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 |
| |
| |