mLinux 4

1 files changed, 237 insertions, 0 deletions

diff --git a/scripts/lib/wic/plugins/source/bootimg-efi.py b/scripts/lib/wic/plugins/source/bootimg-efi.py
new file mode 100644
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+++ b/scripts/lib/wic/plugins/source/bootimg-efi.py
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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-efi' source plugin class for 'wic'
+#
+# AUTHORS
+# Tom Zanussi <tom.zanussi (at] linux.intel.com>
+#
+
+import os
+import shutil
+
+from wic import msger
+from wic.pluginbase import SourcePlugin
+from wic.utils.misc import get_custom_config
+from wic.utils.oe.misc import exec_cmd, exec_native_cmd, get_bitbake_var, \
+                              BOOTDD_EXTRA_SPACE
+
+class BootimgEFIPlugin(SourcePlugin):
+    """
+    Create EFI boot partition.
+    This plugin supports GRUB 2 and gummiboot bootloaders.
+    """
+
+    name = 'bootimg-efi'
+
+    @classmethod
+    def do_configure_grubefi(cls, hdddir, creator, cr_workdir):
+        """
+        Create loader-specific (grub-efi) config
+        """
+        configfile = creator.ks.bootloader.configfile
+        custom_cfg = None
+        if configfile:
+            custom_cfg = get_custom_config(configfile)
+            if custom_cfg:
+                # Use a custom configuration for grub
+                grubefi_conf = custom_cfg
+                msger.debug("Using custom configuration file "
+                        "%s for grub.cfg" % configfile)
+            else:
+                msger.error("configfile is specified but failed to "
+                        "get it from %s." % configfile)
+
+        if not custom_cfg:
+            # Create grub configuration using parameters from wks file
+            bootloader = creator.ks.bootloader
+
+            grubefi_conf = ""
+            grubefi_conf += "serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1\n"
+            grubefi_conf += "default=boot\n"
+            grubefi_conf += "timeout=%s\n" % bootloader.timeout
+            grubefi_conf += "menuentry 'boot'{\n"
+
+            kernel = "/bzImage"
+
+            grubefi_conf += "linux %s root=%s rootwait %s\n" \
+                % (kernel, creator.rootdev, bootloader.append)
+            grubefi_conf += "}\n"
+
+        msger.debug("Writing grubefi config %s/hdd/boot/EFI/BOOT/grub.cfg" \
+                        % cr_workdir)
+        cfg = open("%s/hdd/boot/EFI/BOOT/grub.cfg" % cr_workdir, "w")
+        cfg.write(grubefi_conf)
+        cfg.close()
+
+    @classmethod
+    def do_configure_gummiboot(cls, hdddir, creator, cr_workdir):
+        """
+        Create loader-specific (gummiboot) config
+        """
+        install_cmd = "install -d %s/loader" % hdddir
+        exec_cmd(install_cmd)
+
+        install_cmd = "install -d %s/loader/entries" % hdddir
+        exec_cmd(install_cmd)
+
+        bootloader = creator.ks.bootloader
+
+        loader_conf = ""
+        loader_conf += "default boot\n"
+        loader_conf += "timeout %d\n" % bootloader.timeout
+
+        msger.debug("Writing gummiboot config %s/hdd/boot/loader/loader.conf" \
+                        % cr_workdir)
+        cfg = open("%s/hdd/boot/loader/loader.conf" % cr_workdir, "w")
+        cfg.write(loader_conf)
+        cfg.close()
+
+        configfile = creator.ks.bootloader.configfile
+        custom_cfg = None
+        if configfile:
+            custom_cfg = get_custom_config(configfile)
+            if custom_cfg:
+                # Use a custom configuration for gummiboot
+                boot_conf = custom_cfg
+                msger.debug("Using custom configuration file "
+                        "%s for gummiboots's boot.conf" % configfile)
+            else:
+                msger.error("configfile is specified but failed to "
+                        "get it from %s." % configfile)
+
+        if not custom_cfg:
+            # Create gummiboot configuration using parameters from wks file
+            kernel = "/bzImage"
+
+            boot_conf = ""
+            boot_conf += "title boot\n"
+            boot_conf += "linux %s\n" % kernel
+            boot_conf += "options LABEL=Boot root=%s %s\n" % \
+                             (creator.rootdev, bootloader.append)
+
+        msger.debug("Writing gummiboot config %s/hdd/boot/loader/entries/boot.conf" \
+                        % cr_workdir)
+        cfg = open("%s/hdd/boot/loader/entries/boot.conf" % cr_workdir, "w")
+        cfg.write(boot_conf)
+        cfg.close()
+
+
+    @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 loader-specific config
+        """
+        hdddir = "%s/hdd/boot" % cr_workdir
+
+        install_cmd = "install -d %s/EFI/BOOT" % hdddir
+        exec_cmd(install_cmd)
+
+        try:
+            if source_params['loader'] == 'grub-efi':
+                cls.do_configure_grubefi(hdddir, creator, cr_workdir)
+            elif source_params['loader'] == 'gummiboot':
+                cls.do_configure_gummiboot(hdddir, creator, cr_workdir)
+            else:
+                msger.error("unrecognized bootimg-efi loader: %s" % source_params['loader'])
+        except KeyError:
+            msger.error("bootimg-efi requires a loader, none specified")
+
+
+    @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 an EFI (grub) boot partition.
+        """
+        if not bootimg_dir:
+            bootimg_dir = get_bitbake_var("HDDDIR")
+            if not bootimg_dir:
+                msger.error("Couldn't find HDDDIR, exiting\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/bzImage" % \
+            (staging_kernel_dir, hdddir)
+        exec_cmd(install_cmd)
+
+        try:
+            if source_params['loader'] == 'grub-efi':
+                shutil.copyfile("%s/hdd/boot/EFI/BOOT/grub.cfg" % cr_workdir,
+                                "%s/grub.cfg" % cr_workdir)
+                cp_cmd = "cp %s/EFI/BOOT/* %s/EFI/BOOT" % (bootimg_dir, hdddir)
+                exec_cmd(cp_cmd, True)
+                shutil.move("%s/grub.cfg" % cr_workdir,
+                            "%s/hdd/boot/EFI/BOOT/grub.cfg" % cr_workdir)
+            elif source_params['loader'] == 'gummiboot':
+                cp_cmd = "cp %s/EFI/BOOT/* %s/EFI/BOOT" % (bootimg_dir, hdddir)
+                exec_cmd(cp_cmd, True)
+            else:
+                msger.error("unrecognized bootimg-efi loader: %s" % source_params['loader'])
+        except KeyError:
+            msger.error("bootimg-efi requires a loader, none specified")
+
+        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 efi -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)
+
+        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 = bootimg_size
+        part.source_file = bootimg