| # |
| # Copyright (c) 2014, Intel Corporation. |
| # |
| # SPDX-License-Identifier: GPL-2.0-only |
| # |
| # DESCRIPTION |
| # This implements the 'bootimg-pcbios' source plugin class for 'wic' |
| # |
| # AUTHORS |
| # Tom Zanussi <tom.zanussi (at] linux.intel.com> |
| # |
| |
| import logging |
| import os |
| import re |
| |
| 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 BootimgPcbiosPlugin(SourcePlugin): |
| """ |
| Create MBR boot partition and install syslinux on it. |
| """ |
| |
| name = 'bootimg-pcbios' |
| |
| @classmethod |
| def _get_bootimg_dir(cls, bootimg_dir, dirname): |
| """ |
| Check if dirname exists in default bootimg_dir or in STAGING_DIR. |
| """ |
| staging_datadir = get_bitbake_var("STAGING_DATADIR") |
| for result in (bootimg_dir, staging_datadir): |
| if os.path.exists("%s/%s" % (result, dirname)): |
| return result |
| |
| # STAGING_DATADIR is expanded with MLPREFIX if multilib is enabled |
| # but dependency syslinux is still populated to original STAGING_DATADIR |
| nonarch_datadir = re.sub('/[^/]*recipe-sysroot', '/recipe-sysroot', staging_datadir) |
| if os.path.exists(os.path.join(nonarch_datadir, dirname)): |
| return nonarch_datadir |
| |
| raise WicError("Couldn't find correct bootimg_dir, exiting") |
| |
| @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. |
| """ |
| bootimg_dir = cls._get_bootimg_dir(bootimg_dir, 'syslinux') |
| mbrfile = "%s/syslinux/" % bootimg_dir |
| if creator.ptable_format == 'msdos': |
| mbrfile += "mbr.bin" |
| elif creator.ptable_format == 'gpt': |
| mbrfile += "gptmbr.bin" |
| else: |
| raise WicError("Unsupported partition table: %s" % |
| creator.ptable_format) |
| |
| if not os.path.exists(mbrfile): |
| raise WicError("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") |
| logger.debug("Installing MBR on disk %s as %s with size %s bytes", |
| disk_name, full_path, disk.min_size) |
| |
| dd_cmd = "dd if=%s of=%s conv=notrunc" % (mbrfile, full_path) |
| exec_cmd(dd_cmd, native_sysroot) |
| |
| @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 |
| logger.debug("Using custom configuration file %s " |
| "for syslinux.cfg", bootloader.configfile) |
| else: |
| raise WicError("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) |
| |
| logger.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. |
| """ |
| bootimg_dir = cls._get_bootimg_dir(bootimg_dir, 'syslinux') |
| |
| staging_kernel_dir = kernel_dir |
| |
| hdddir = "%s/hdd/boot" % cr_workdir |
| |
| kernel = get_bitbake_var("KERNEL_IMAGETYPE") |
| if get_bitbake_var("INITRAMFS_IMAGE_BUNDLE") == "1": |
| if get_bitbake_var("INITRAMFS_IMAGE"): |
| kernel = "%s-%s.bin" % \ |
| (get_bitbake_var("KERNEL_IMAGETYPE"), get_bitbake_var("INITRAMFS_LINK_NAME")) |
| |
| cmds = ("install -m 0644 %s/%s %s/vmlinuz" % |
| (staging_kernel_dir, kernel, hdddir), |
| "install -m 444 %s/syslinux/ldlinux.sys %s/ldlinux.sys" % |
| (bootimg_dir, hdddir), |
| "install -m 0644 %s/syslinux/vesamenu.c32 %s/vesamenu.c32" % |
| (bootimg_dir, hdddir), |
| "install -m 444 %s/syslinux/libcom32.c32 %s/libcom32.c32" % |
| (bootimg_dir, hdddir), |
| "install -m 444 %s/syslinux/libutil.c32 %s/libutil.c32" % |
| (bootimg_dir, hdddir)) |
| |
| for install_cmd in cmds: |
| 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 |
| |
| 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%s.img" % (cr_workdir, part.lineno) |
| |
| dosfs_cmd = "mkdosfs -n boot -i %s -S 512 -C %s %d" % \ |
| (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) |
| |
| 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(bootimg_size) |
| part.source_file = bootimg |