1# ex:ts=4:sw=4:sts=4:et 2# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- 3# 4# Copyright (c) 2014, Intel Corporation. 5# All rights reserved. 6# 7# This program is free software; you can redistribute it and/or modify 8# it under the terms of the GNU General Public License version 2 as 9# published by the Free Software Foundation. 10# 11# This program is distributed in the hope that it will be useful, 12# but WITHOUT ANY WARRANTY; without even the implied warranty of 13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14# GNU General Public License for more details. 15# 16# You should have received a copy of the GNU General Public License along 17# with this program; if not, write to the Free Software Foundation, Inc., 18# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 19# 20# DESCRIPTION 21# This implements the 'bootimg-pcbios' source plugin class for 'wic' 22# 23# AUTHORS 24# Tom Zanussi <tom.zanussi (at] linux.intel.com> 25# 26 27import os 28 29from wic.utils.errors import ImageError 30from wic import kickstart, msger 31from wic.utils import runner 32from wic.pluginbase import SourcePlugin 33from wic.utils.oe.misc import exec_cmd, exec_native_cmd, \ 34 get_bitbake_var, BOOTDD_EXTRA_SPACE 35 36class BootimgPcbiosPlugin(SourcePlugin): 37 """ 38 Create MBR boot partition and install syslinux on it. 39 """ 40 41 name = 'bootimg-pcbios' 42 43 @classmethod 44 def do_install_disk(cls, disk, disk_name, creator, workdir, oe_builddir, 45 bootimg_dir, kernel_dir, native_sysroot): 46 """ 47 Called after all partitions have been prepared and assembled into a 48 disk image. In this case, we install the MBR. 49 """ 50 mbrfile = "%s/syslinux/" % bootimg_dir 51 if creator.ptable_format == 'msdos': 52 mbrfile += "mbr.bin" 53 elif creator.ptable_format == 'gpt': 54 mbrfile += "gptmbr.bin" 55 else: 56 msger.error("Unsupported partition table: %s" % creator.ptable_format) 57 58 if not os.path.exists(mbrfile): 59 msger.error("Couldn't find %s. If using the -e option, do you " 60 "have the right MACHINE set in local.conf? If not, " 61 "is the bootimg_dir path correct?" % mbrfile) 62 63 full_path = creator._full_path(workdir, disk_name, "direct") 64 msger.debug("Installing MBR on disk %s as %s with size %s bytes" \ 65 % (disk_name, full_path, disk['min_size'])) 66 67 rcode = runner.show(['dd', 'if=%s' % mbrfile, 68 'of=%s' % full_path, 'conv=notrunc']) 69 if rcode != 0: 70 raise ImageError("Unable to set MBR to %s" % full_path) 71 72 @classmethod 73 def do_configure_partition(cls, part, source_params, creator, cr_workdir, 74 oe_builddir, bootimg_dir, kernel_dir, 75 native_sysroot): 76 """ 77 Called before do_prepare_partition(), creates syslinux config 78 """ 79 hdddir = "%s/hdd/boot" % cr_workdir 80 rm_cmd = "rm -rf " + cr_workdir 81 exec_cmd(rm_cmd) 82 83 install_cmd = "install -d %s" % hdddir 84 exec_cmd(install_cmd) 85 86 splash = os.path.join(cr_workdir, "/hdd/boot/splash.jpg") 87 if os.path.exists(splash): 88 splashline = "menu background splash.jpg" 89 else: 90 splashline = "" 91 92 options = creator.ks.handler.bootloader.appendLine 93 94 syslinux_conf = "" 95 syslinux_conf += "PROMPT 0\n" 96 timeout = kickstart.get_timeout(creator.ks) 97 if not timeout: 98 timeout = 0 99 syslinux_conf += "TIMEOUT " + str(timeout) + "\n" 100 syslinux_conf += "\n" 101 syslinux_conf += "ALLOWOPTIONS 1\n" 102 syslinux_conf += "SERIAL 0 115200\n" 103 syslinux_conf += "\n" 104 if splashline: 105 syslinux_conf += "%s\n" % splashline 106 syslinux_conf += "DEFAULT boot\n" 107 syslinux_conf += "LABEL boot\n" 108 109 kernel = "/vmlinuz" 110 syslinux_conf += "KERNEL " + kernel + "\n" 111 112 syslinux_conf += "APPEND label=boot root=%s %s\n" % \ 113 (creator.rootdev, options) 114 115 msger.debug("Writing syslinux config %s/hdd/boot/syslinux.cfg" \ 116 % cr_workdir) 117 cfg = open("%s/hdd/boot/syslinux.cfg" % cr_workdir, "w") 118 cfg.write(syslinux_conf) 119 cfg.close() 120 121 @classmethod 122 def do_prepare_partition(cls, part, source_params, creator, cr_workdir, 123 oe_builddir, bootimg_dir, kernel_dir, 124 rootfs_dir, native_sysroot): 125 """ 126 Called to do the actual content population for a partition i.e. it 127 'prepares' the partition to be incorporated into the image. 128 In this case, prepare content for legacy bios boot partition. 129 """ 130 def _has_syslinux(dirname): 131 if dirname: 132 syslinux = "%s/syslinux" % dirname 133 if os.path.exists(syslinux): 134 return True 135 return False 136 137 if not _has_syslinux(bootimg_dir): 138 bootimg_dir = get_bitbake_var("STAGING_DATADIR") 139 if not bootimg_dir: 140 msger.error("Couldn't find STAGING_DATADIR, exiting\n") 141 if not _has_syslinux(bootimg_dir): 142 msger.error("Please build syslinux first\n") 143 # just so the result notes display it 144 creator.set_bootimg_dir(bootimg_dir) 145 146 staging_kernel_dir = kernel_dir 147 148 hdddir = "%s/hdd/boot" % cr_workdir 149 150 install_cmd = "install -m 0644 %s/bzImage %s/vmlinuz" \ 151 % (staging_kernel_dir, hdddir) 152 exec_cmd(install_cmd) 153 154 install_cmd = "install -m 444 %s/syslinux/ldlinux.sys %s/ldlinux.sys" \ 155 % (bootimg_dir, hdddir) 156 exec_cmd(install_cmd) 157 158 du_cmd = "du -bks %s" % hdddir 159 out = exec_cmd(du_cmd) 160 blocks = int(out.split()[0]) 161 162 extra_blocks = part.get_extra_block_count(blocks) 163 164 if extra_blocks < BOOTDD_EXTRA_SPACE: 165 extra_blocks = BOOTDD_EXTRA_SPACE 166 167 blocks += extra_blocks 168 169 msger.debug("Added %d extra blocks to %s to get to %d total blocks" % \ 170 (extra_blocks, part.mountpoint, blocks)) 171 172 # Ensure total sectors is an integral number of sectors per 173 # track or mcopy will complain. Sectors are 512 bytes, and we 174 # generate images with 32 sectors per track. This calculation is 175 # done in blocks, thus the mod by 16 instead of 32. 176 blocks += (16 - (blocks % 16)) 177 178 # dosfs image, created by mkdosfs 179 bootimg = "%s/boot.img" % cr_workdir 180 181 dosfs_cmd = "mkdosfs -n boot -S 512 -C %s %d" % (bootimg, blocks) 182 exec_native_cmd(dosfs_cmd, native_sysroot) 183 184 mcopy_cmd = "mcopy -i %s -s %s/* ::/" % (bootimg, hdddir) 185 exec_native_cmd(mcopy_cmd, native_sysroot) 186 187 syslinux_cmd = "syslinux %s" % bootimg 188 exec_native_cmd(syslinux_cmd, native_sysroot) 189 190 chmod_cmd = "chmod 644 %s" % bootimg 191 exec_cmd(chmod_cmd) 192 193 du_cmd = "du -Lbks %s" % bootimg 194 out = exec_cmd(du_cmd) 195 bootimg_size = out.split()[0] 196 197 part.set_size(bootimg_size) 198 part.set_source_file(bootimg) 199 200 201