18 files changed, 2438 insertions, 0 deletions

diff --git a/debian/bin/abiupdate.py b/debian/bin/abiupdate.py
new file mode 100755
index 000000000..dbb6f77ba
--- /dev/null
+++ b/debian/bin/abiupdate.py
@@ -0,0 +1,232 @@
+#!/usr/bin/python3
+
+import sys
+import optparse
+import os
+import shutil
+import tempfile
+
+from urllib.request import urlopen
+from urllib.error import HTTPError
+
+from debian_linux.abi import Symbols
+from debian_linux.config import ConfigCoreDump
+from debian_linux.debian import Changelog, VersionLinux
+
+default_url_base = "https://deb.debian.org/debian/"
+default_url_base_incoming = "https://incoming.debian.org/debian-buildd/"
+default_url_base_ports = "https://deb.debian.org/debian-ports/"
+default_url_base_ports_incoming = "https://incoming.ports.debian.org/"
+default_url_base_security = "https://deb.debian.org/debian-security/"
+
+
+class url_debian_flat(object):
+    def __init__(self, base):
+        self.base = base
+
+    def __call__(self, source, filename, arch):
+        return self.base + filename
+
+
+class url_debian_pool(object):
+    def __init__(self, base):
+        self.base = base
+
+    def __call__(self, source, filename, arch):
+        return (self.base + "pool/main/" + source[0] + "/" + source + "/"
+                + filename)
+
+
+class url_debian_ports_pool(url_debian_pool):
+    def __call__(self, source, filename, arch):
+        if arch == 'all':
+            return url_debian_pool.__call__(self, source, filename, arch)
+        return (self.base + "pool-" + arch + "/main/" + source[0] + "/"
+                + source + "/" + filename)
+
+
+class url_debian_security_pool(url_debian_pool):
+    def __call__(self, source, filename, arch):
+        return (self.base + "pool/updates/main/" + source[0] + "/" + source
+                + "/" + filename)
+
+
+class Main(object):
+    dir = None
+
+    def __init__(self, arch=None, featureset=None, flavour=None):
+        self.log = sys.stdout.write
+
+        self.override_arch = arch
+        self.override_featureset = featureset
+        self.override_flavour = flavour
+
+        changelog = Changelog(version=VersionLinux)
+        while changelog[0].distribution == 'UNRELEASED':
+            changelog.pop(0)
+        changelog = changelog[0]
+
+        self.source = changelog.source
+        self.version = changelog.version.linux_version
+        self.version_source = changelog.version.complete
+
+        if changelog.distribution.endswith('-security'):
+            self.urls = [url_base_security]
+        else:
+            self.urls = [url_base, url_base_ports,
+                         url_base_incoming, url_base_ports_incoming]
+
+        self.config = ConfigCoreDump(fp=open("debian/config.defines.dump",
+                                             "rb"))
+
+        self.version_abi = self.config['version', ]['abiname']
+
+    def __call__(self):
+        self.dir = tempfile.mkdtemp(prefix='abiupdate')
+        try:
+            self.log("Retrieve config\n")
+
+            try:
+                config = self.get_config()
+            except HTTPError as e:
+                self.log("Failed to retrieve %s: %s\n" % (e.filename, e))
+                sys.exit(1)
+
+            if self.override_arch:
+                arches = [self.override_arch]
+            else:
+                arches = config[('base',)]['arches']
+            for arch in arches:
+                self.update_arch(config, arch)
+        finally:
+            shutil.rmtree(self.dir)
+
+    def extract_package(self, filename, base):
+        base_out = self.dir + "/" + base
+        os.mkdir(base_out)
+        os.system("dpkg-deb --extract %s %s" % (filename, base_out))
+        return base_out
+
+    def get_abi(self, arch, prefix):
+        try:
+            version_abi = (self.config[('version',)]['abiname_base'] + '-'
+                           + self.config['abi', arch]['abiname'])
+        except KeyError:
+            version_abi = self.version_abi
+        filename = ("linux-headers-%s-%s_%s_%s.deb" %
+                    (version_abi, prefix, self.version_source, arch))
+        f = self.retrieve_package(filename, arch)
+        d = self.extract_package(f, "linux-headers-%s_%s" % (prefix, arch))
+        f1 = d + ("/usr/src/linux-headers-%s-%s/Module.symvers" %
+                  (version_abi, prefix))
+        s = Symbols(open(f1))
+        shutil.rmtree(d)
+        return version_abi, s
+
+    def get_config(self):
+        # XXX We used to fetch the previous version of linux-support here,
+        # but until we authenticate downloads we should not do that as
+        # pickle.load allows running arbitrary code.
+        return self.config
+
+    def retrieve_package(self, filename, arch):
+        for i, url in enumerate(self.urls):
+            u = url(self.source, filename, arch)
+            filename_out = self.dir + "/" + filename
+
+            try:
+                f_in = urlopen(u)
+            except HTTPError:
+                if i == len(self.urls) - 1:
+                    # No more URLs to try
+                    raise
+                else:
+                    continue
+
+            f_out = open(filename_out, 'wb')
+            while 1:
+                r = f_in.read()
+                if not r:
+                    break
+                f_out.write(r)
+            return filename_out
+
+    def save_abi(self, version_abi, symbols, arch, featureset, flavour):
+        dir = "debian/abi/%s" % version_abi
+        if not os.path.exists(dir):
+            os.makedirs(dir)
+        out = "%s/%s_%s_%s" % (dir, arch, featureset, flavour)
+        symbols.write(open(out, 'w'))
+
+    def update_arch(self, config, arch):
+        if self.override_featureset:
+            featuresets = [self.override_featureset]
+        else:
+            featuresets = config[('base', arch)]['featuresets']
+        for featureset in featuresets:
+            self.update_featureset(config, arch, featureset)
+
+    def update_featureset(self, config, arch, featureset):
+        config_base = config.merge('base', arch, featureset)
+
+        if not config_base.get('enabled', True):
+            return
+
+        if self.override_flavour:
+            flavours = [self.override_flavour]
+        else:
+            flavours = config_base['flavours']
+        for flavour in flavours:
+            self.update_flavour(config, arch, featureset, flavour)
+
+    def update_flavour(self, config, arch, featureset, flavour):
+        self.log("Updating ABI for arch %s, featureset %s, flavour %s: " %
+                 (arch, featureset, flavour))
+        try:
+            if featureset == 'none':
+                localversion = flavour
+            else:
+                localversion = featureset + '-' + flavour
+
+            version_abi, abi = self.get_abi(arch, localversion)
+            self.save_abi(version_abi, abi, arch, featureset, flavour)
+            self.log("Ok.\n")
+        except HTTPError as e:
+            self.log("Failed to retrieve %s: %s\n" % (e.filename, e))
+        except Exception:
+            self.log("FAILED!\n")
+            import traceback
+            traceback.print_exc(None, sys.stdout)
+
+
+if __name__ == '__main__':
+    options = optparse.OptionParser()
+    options.add_option("-u", "--url-base", dest="url_base",
+                       default=default_url_base)
+    options.add_option("--url-base-incoming", dest="url_base_incoming",
+                       default=default_url_base_incoming)
+    options.add_option("--url-base-ports", dest="url_base_ports",
+                       default=default_url_base_ports)
+    options.add_option("--url-base-ports-incoming",
+                       dest="url_base_ports_incoming",
+                       default=default_url_base_ports_incoming)
+    options.add_option("--url-base-security", dest="url_base_security",
+                       default=default_url_base_security)
+
+    opts, args = options.parse_args()
+
+    kw = {}
+    if len(args) >= 1:
+        kw['arch'] = args[0]
+    if len(args) >= 2:
+        kw['featureset'] = args[1]
+    if len(args) >= 3:
+        kw['flavour'] = args[2]
+
+    url_base = url_debian_pool(opts.url_base)
+    url_base_incoming = url_debian_pool(opts.url_base_incoming)
+    url_base_ports = url_debian_ports_pool(opts.url_base_ports)
+    url_base_ports_incoming = url_debian_flat(opts.url_base_ports_incoming)
+    url_base_security = url_debian_security_pool(opts.url_base_security)
+
+    Main(**kw)()
diff --git a/debian/bin/buildcheck.py b/debian/bin/buildcheck.py
new file mode 100755
index 000000000..3f7ce25a9
--- /dev/null
+++ b/debian/bin/buildcheck.py
@@ -0,0 +1,285 @@
+#!/usr/bin/python3
+
+import sys
+import glob
+import os
+import re
+
+from debian_linux.abi import Symbols
+from debian_linux.config import ConfigCoreDump
+from debian_linux.debian import Changelog, VersionLinux
+
+
+class CheckAbi(object):
+    class SymbolInfo(object):
+        def __init__(self, symbol, symbol_ref=None):
+            self.symbol = symbol
+            self.symbol_ref = symbol_ref or symbol
+
+        @property
+        def module(self):
+            return self.symbol.module
+
+        @property
+        def name(self):
+            return self.symbol.name
+
+        def write(self, out, ignored):
+            info = []
+            if ignored:
+                info.append("ignored")
+            for name in ('module', 'version', 'export'):
+                data = getattr(self.symbol, name)
+                data_ref = getattr(self.symbol_ref, name)
+                if data != data_ref:
+                    info.append("%s: %s -> %s" % (name, data_ref, data))
+                else:
+                    info.append("%s: %s" % (name, data))
+            out.write("%-48s %s\n" % (self.symbol.name, ", ".join(info)))
+
+    def __init__(self, config, dir, arch, featureset, flavour):
+        self.config = config
+        self.arch, self.featureset, self.flavour = arch, featureset, flavour
+
+        self.filename_new = "%s/Module.symvers" % dir
+
+        try:
+            version_abi = (self.config[('version',)]['abiname_base'] + '-'
+                           + self.config['abi', arch]['abiname'])
+        except KeyError:
+            version_abi = self.config[('version',)]['abiname']
+        self.filename_ref = ("debian/abi/%s/%s_%s_%s" %
+                             (version_abi, arch, featureset, flavour))
+
+    def __call__(self, out):
+        ret = 0
+
+        new = Symbols(open(self.filename_new))
+        unversioned = [name for name in new
+                       if new[name].version == '0x00000000']
+        if unversioned:
+            out.write("ABI is not completely versioned!  "
+                      "Refusing to continue.\n")
+            out.write("\nUnversioned symbols:\n")
+            for name in sorted(unversioned):
+                self.SymbolInfo(new[name]).write(out, False)
+            ret = 1
+
+        try:
+            ref = Symbols(open(self.filename_ref))
+        except IOError:
+            out.write("Can't read ABI reference.  ABI not checked!\n")
+            return ret
+
+        symbols, add, change, remove = self._cmp(ref, new)
+
+        ignore = self._ignore(symbols)
+
+        add_effective = add - ignore
+        change_effective = change - ignore
+        remove_effective = remove - ignore
+
+        if change_effective or remove_effective:
+            out.write("ABI has changed!  Refusing to continue.\n")
+            ret = 1
+        elif change or remove:
+            out.write("ABI has changed but all changes have been ignored.  "
+                      "Continuing.\n")
+        elif add_effective:
+            out.write("New symbols have been added.  Continuing.\n")
+        elif add:
+            out.write("New symbols have been added but have been ignored.  "
+                      "Continuing.\n")
+        else:
+            out.write("No ABI changes.\n")
+
+        if add:
+            out.write("\nAdded symbols:\n")
+            for name in sorted(add):
+                symbols[name].write(out, name in ignore)
+
+        if change:
+            out.write("\nChanged symbols:\n")
+            for name in sorted(change):
+                symbols[name].write(out, name in ignore)
+
+        if remove:
+            out.write("\nRemoved symbols:\n")
+            for name in sorted(remove):
+                symbols[name].write(out, name in ignore)
+
+        return ret
+
+    def _cmp(self, ref, new):
+        ref_names = set(ref.keys())
+        new_names = set(new.keys())
+
+        add = set()
+        change = set()
+        remove = set()
+
+        symbols = {}
+
+        for name in new_names - ref_names:
+            add.add(name)
+            symbols[name] = self.SymbolInfo(new[name])
+
+        for name in ref_names.intersection(new_names):
+            s_ref = ref[name]
+            s_new = new[name]
+
+            if s_ref != s_new:
+                change.add(name)
+                symbols[name] = self.SymbolInfo(s_new, s_ref)
+
+        for name in ref_names - new_names:
+            remove.add(name)
+            symbols[name] = self.SymbolInfo(ref[name])
+
+        return symbols, add, change, remove
+
+    def _ignore_pattern(self, pattern):
+        ret = []
+        for i in re.split(r'(\*\*?)', pattern):
+            if i == '*':
+                ret.append(r'[^/]*')
+            elif i == '**':
+                ret.append(r'.*')
+            elif i:
+                ret.append(re.escape(i))
+        return re.compile('^' + ''.join(ret) + '$')
+
+    def _ignore(self, symbols):
+        # TODO: let config merge this lists
+        configs = []
+        configs.append(self.config.get(('abi', self.arch, self.featureset,
+                                        self.flavour), {}))
+        configs.append(self.config.get(('abi', self.arch, None, self.flavour),
+                                       {}))
+        configs.append(self.config.get(('abi', self.arch, self.featureset),
+                                       {}))
+        configs.append(self.config.get(('abi', self.arch), {}))
+        configs.append(self.config.get(('abi', None, self.featureset), {}))
+        configs.append(self.config.get(('abi',), {}))
+
+        ignores = set()
+        for config in configs:
+            ignores.update(config.get('ignore-changes', []))
+
+        filtered = set()
+        for ignore in ignores:
+            type = 'name'
+            if ':' in ignore:
+                type, ignore = ignore.split(':')
+            if type in ('name', 'module'):
+                p = self._ignore_pattern(ignore)
+                for symbol in symbols.values():
+                    if p.match(getattr(symbol, type)):
+                        filtered.add(symbol.name)
+            else:
+                raise NotImplementedError
+
+        return filtered
+
+
+class CheckImage(object):
+    def __init__(self, config, dir, arch, featureset, flavour):
+        self.dir = dir
+        self.arch, self.featureset, self.flavour = arch, featureset, flavour
+
+        self.changelog = Changelog(version=VersionLinux)[0]
+
+        self.config_entry_base = config.merge('base', arch, featureset,
+                                              flavour)
+        self.config_entry_build = config.merge('build', arch, featureset,
+                                               flavour)
+        self.config_entry_image = config.merge('image', arch, featureset,
+                                               flavour)
+
+    def __call__(self, out):
+        image = self.config_entry_build.get('image-file')
+        uncompressed_image = self.config_entry_build \
+                                 .get('uncompressed-image-file')
+
+        if not image:
+            # TODO: Bail out
+            return 0
+
+        image = os.path.join(self.dir, image)
+        if uncompressed_image:
+            uncompressed_image = os.path.join(self.dir, uncompressed_image)
+
+        fail = 0
+
+        fail |= self.check_size(out, image, uncompressed_image)
+
+        return fail
+
+    def check_size(self, out, image, uncompressed_image):
+        value = self.config_entry_image.get('check-size')
+
+        if not value:
+            return 0
+
+        dtb_size = 0
+        if self.config_entry_image.get('check-size-with-dtb'):
+            for dtb in glob.glob(
+                    os.path.join(self.dir, 'arch',
+                                 self.config_entry_base['kernel-arch'],
+                                 'boot/dts/*.dtb')):
+                dtb_size = max(dtb_size, os.stat(dtb).st_size)
+
+        size = os.stat(image).st_size + dtb_size
+
+        # 1% overhead is desirable in order to cope with growth
+        # through the lifetime of a stable release. Warn if this is
+        # not the case.
+        usage = (float(size)/value) * 100.0
+        out.write('Image size %d/%d, using %.2f%%.  ' % (size, value, usage))
+        if size > value:
+            out.write('Too large.  Refusing to continue.\n')
+            return 1
+        elif usage >= 99.0:
+            out.write('Under 1%% space in %s.  ' % self.changelog.distribution)
+        else:
+            out.write('Image fits.  ')
+        out.write('Continuing.\n')
+
+        # Also check the uncompressed image
+        if uncompressed_image and \
+           self.config_entry_image.get('check-uncompressed-size'):
+            value = self.config_entry_image.get('check-uncompressed-size')
+            size = os.stat(uncompressed_image).st_size
+            usage = (float(size)/value) * 100.0
+            out.write('Uncompressed Image size %d/%d, using %.2f%%.  ' %
+                      (size, value, usage))
+            if size > value:
+                out.write('Too large.  Refusing to continue.\n')
+                return 1
+            elif usage >= 99.0:
+                out.write('Uncompressed Image Under 1%% space in %s.  ' %
+                          self.changelog.distribution)
+            else:
+                out.write('Uncompressed Image fits.  ')
+            out.write('Continuing.\n')
+
+        return 0
+
+
+class Main(object):
+    def __init__(self, dir, arch, featureset, flavour):
+        self.args = dir, arch, featureset, flavour
+
+        self.config = ConfigCoreDump(open("debian/config.defines.dump", "rb"))
+
+    def __call__(self):
+        fail = 0
+
+        for c in CheckAbi, CheckImage:
+            fail |= c(self.config, *self.args)(sys.stdout)
+
+        return fail
+
+
+if __name__ == '__main__':
+    sys.exit(Main(*sys.argv[1:])())
diff --git a/debian/bin/check-patches.sh b/debian/bin/check-patches.sh
new file mode 100755
index 000000000..54bb731e9
--- /dev/null
+++ b/debian/bin/check-patches.sh
@@ -0,0 +1,28 @@
+#!/bin/sh -e
+
+TMPDIR=$(mktemp -d)
+trap "rm -rf $TMPDIR" EXIT
+for patchdir in debian/patches*; do
+    sed '/^#/d; /^[[:space:]]*$/d; /^X /d; s/^+ //; s,^,'"$patchdir"'/,' "$patchdir"/series
+done | sort -u > $TMPDIR/used
+find debian/patches* ! -path '*/series' -type f -name "*.diff" -o -name "*.patch" -printf "%p\n" | sort > $TMPDIR/avail
+echo "Used patches"
+echo "=============="
+cat $TMPDIR/used
+echo
+echo "Unused patches"
+echo "=============="
+grep -F -v -f $TMPDIR/used $TMPDIR/avail || test $? = 1
+echo
+echo "Patches without required headers"
+echo "================================"
+xargs grep -E -l '^(Subject|Description):' < $TMPDIR/used | xargs grep -E -l '^(From|Author|Origin):' > $TMPDIR/goodheaders || test $? = 1
+grep -F -v -f $TMPDIR/goodheaders $TMPDIR/used || test $? = 1
+echo
+echo "Patches without Origin or Forwarded header"
+echo "=========================================="
+xargs grep -E -L '^(Origin:|Forwarded: (no\b|not-needed|http))' < $TMPDIR/used || test $? = 1
+echo
+echo "Patches to be forwarded"
+echo "======================="
+xargs grep -E -l '^Forwarded: no\b' < $TMPDIR/used || test $? = 1
diff --git a/debian/bin/debian_linux b/debian/bin/debian_linux
new file mode 120000
index 000000000..01f3e04dc
--- /dev/null
+++ b/debian/bin/debian_linux
@@ -0,0 +1 @@
+../lib/python/debian_linux/
\ No newline at end of file
diff --git a/debian/bin/fix-shebang b/debian/bin/fix-shebang
new file mode 100755
index 000000000..edf551fa3
--- /dev/null
+++ b/debian/bin/fix-shebang
@@ -0,0 +1,12 @@
+#!/usr/bin/perl -pi
+
+# Change "#!/usr/bin/env perl" to "#!/usr/bin/perl" (policy §10.4).
+# Other uses of /usr/bin/env should probably be converted as well, but
+# policy doesn't specify what to do.
+if ($. == 1 && m|^\#!\s*/usr/bin/env\s+(.+)|) {
+    if ($1 eq "perl") {
+	$_ = "#!/usr/bin/perl\n";
+    } else {
+	print STDERR "W: Found #!/usr/bin/env $1 and don't know what to substitute\n";
+    }
+}
diff --git a/debian/bin/gencontrol.py b/debian/bin/gencontrol.py
new file mode 100755
index 000000000..325ff46ec
--- /dev/null
+++ b/debian/bin/gencontrol.py
@@ -0,0 +1,664 @@
+#!/usr/bin/python3
+
+import sys
+import locale
+import os
+import os.path
+import subprocess
+import re
+
+from debian_linux import config
+from debian_linux.debian import PackageRelation, \
+    PackageRelationEntry, PackageRelationGroup, VersionLinux, BinaryPackage, \
+    restriction_requires_profile
+from debian_linux.gencontrol import Gencontrol as Base, \
+    iter_featuresets, iter_flavours, add_package_build_restriction
+from debian_linux.utils import Templates
+
+locale.setlocale(locale.LC_CTYPE, "C.UTF-8")
+
+
+class Gencontrol(Base):
+    config_schema = {
+        'abi': {
+            'ignore-changes': config.SchemaItemList(),
+        },
+        'build': {
+            'signed-code': config.SchemaItemBoolean(),
+            'vdso': config.SchemaItemBoolean(),
+        },
+        'description': {
+            'parts': config.SchemaItemList(),
+        },
+        'image': {
+            'bootloaders': config.SchemaItemList(),
+            'configs': config.SchemaItemList(),
+            'initramfs-generators': config.SchemaItemList(),
+            'check-size': config.SchemaItemInteger(),
+            'check-size-with-dtb': config.SchemaItemBoolean(),
+            'check-uncompressed-size': config.SchemaItemInteger(),
+            'depends': config.SchemaItemList(','),
+            'provides': config.SchemaItemList(','),
+            'suggests': config.SchemaItemList(','),
+            'recommends': config.SchemaItemList(','),
+            'conflicts': config.SchemaItemList(','),
+            'breaks': config.SchemaItemList(','),
+        },
+        'relations': {
+        },
+        'packages': {
+            'docs': config.SchemaItemBoolean(),
+            'installer': config.SchemaItemBoolean(),
+            'libc-dev': config.SchemaItemBoolean(),
+            'meta': config.SchemaItemBoolean(),
+            'tools-unversioned': config.SchemaItemBoolean(),
+            'tools-versioned': config.SchemaItemBoolean(),
+            'source': config.SchemaItemBoolean(),
+        }
+    }
+
+    env_flags = [
+        ('DEBIAN_KERNEL_DISABLE_INSTALLER', 'disable_installer', 'installer modules'),
+        ('DEBIAN_KERNEL_DISABLE_SIGNED', 'disable_signed', 'signed code'),
+    ]
+
+    def __init__(self, config_dirs=["debian/config", "debian/config.local"],
+                 template_dirs=["debian/templates"]):
+        super(Gencontrol, self).__init__(
+            config.ConfigCoreHierarchy(self.config_schema, config_dirs),
+            Templates(template_dirs),
+            VersionLinux)
+        self.process_changelog()
+        self.config_dirs = config_dirs
+
+        for env, attr, desc in self.env_flags:
+            setattr(self, attr, False)
+            if os.getenv(env):
+                if self.changelog[0].distribution == 'UNRELEASED':
+                    import warnings
+                    warnings.warn(f'Disable {desc} on request ({env} set)')
+                    setattr(self, attr, True)
+                else:
+                    raise RuntimeError(
+                        f'Unable to disable {desc} in release build ({env} set)')
+
+    def _setup_makeflags(self, names, makeflags, data):
+        for src, dst, optional in names:
+            if src in data or not optional:
+                makeflags[dst] = data[src]
+
+    def do_main_setup(self, vars, makeflags, extra):
+        super(Gencontrol, self).do_main_setup(vars, makeflags, extra)
+        makeflags.update({
+            'VERSION': self.version.linux_version,
+            'UPSTREAMVERSION': self.version.linux_upstream,
+            'ABINAME': self.abiname_version + self.abiname_part,
+            'SOURCEVERSION': self.version.complete,
+        })
+        makeflags['SOURCE_BASENAME'] = vars['source_basename']
+        makeflags['SOURCE_SUFFIX'] = vars['source_suffix']
+
+        # Prepare to generate debian/tests/control
+        self.tests_control = self.templates.get_tests_control('main.tests-control', vars)
+        self.tests_control_image = None
+        self.tests_control_headers = None
+
+        self.installer_packages = {}
+
+        if not self.disable_installer and self.config.merge('packages').get('installer', True):
+            # Add udebs using kernel-wedge
+            kw_env = os.environ.copy()
+            kw_env['KW_DEFCONFIG_DIR'] = 'debian/installer'
+            kw_env['KW_CONFIG_DIR'] = 'debian/installer'
+            kw_proc = subprocess.Popen(
+                ['kernel-wedge', 'gen-control', vars['abiname']],
+                stdout=subprocess.PIPE,
+                text=True,
+                env=kw_env)
+            udeb_packages = BinaryPackage.read_rfc822(kw_proc.stdout)
+            kw_proc.wait()
+            if kw_proc.returncode != 0:
+                raise RuntimeError('kernel-wedge exited with code %d' %
+                                   kw_proc.returncode)
+
+            # All architectures that have some installer udebs
+            arches = set()
+            for package in udeb_packages:
+                arches.update(package['Architecture'])
+
+            # Code-signing status for those architectures
+            # If we're going to build signed udebs later, don't actually
+            # generate udebs.  Just test that we *can* build, so we find
+            # configuration errors before building linux-signed.
+            build_signed = {}
+            for arch in arches:
+                if not self.disable_signed:
+                    build_signed[arch] = self.config.merge('build', arch) \
+                                                    .get('signed-code', False)
+                else:
+                    build_signed[arch] = False
+
+            for package in udeb_packages:
+                # kernel-wedge currently chokes on Build-Profiles so add it now
+                if any(build_signed[arch] for arch in package['Architecture']):
+                    assert all(build_signed[arch]
+                               for arch in package['Architecture'])
+                    # XXX This is a hack to exclude the udebs from
+                    # the package list while still being able to
+                    # convince debhelper and kernel-wedge to go
+                    # part way to building them.
+                    package['Build-Profiles'] = (
+                        '<pkg.linux.udeb-unsigned-test-build !noudeb !stage1'
+                        ' !pkg.linux.nokernel !pkg.linux.quick>')
+                else:
+                    package['Build-Profiles'] = (
+                        '<!noudeb !stage1 !pkg.linux.nokernel !pkg.linux.quick>')
+
+                for arch in package['Architecture']:
+                    self.installer_packages.setdefault(arch, []) \
+                                           .append(package)
+
+    def do_main_makefile(self, makeflags, extra):
+        for featureset in iter_featuresets(self.config):
+            makeflags_featureset = makeflags.copy()
+            makeflags_featureset['FEATURESET'] = featureset
+
+            self.makefile.add_rules(f'source_{featureset}',
+                                    'source', makeflags_featureset)
+            self.makefile.add_deps('source', [f'source_{featureset}'])
+
+        makeflags = makeflags.copy()
+        makeflags['ALL_FEATURESETS'] = ' '.join(iter_featuresets(self.config))
+        super().do_main_makefile(makeflags, extra)
+
+    def do_main_packages(self, vars, makeflags, extra):
+        self.bundle.add('main', ('real', ), makeflags, vars)
+
+        # Only build the metapackages if their names won't exactly match
+        # the packages they depend on
+        do_meta = self.config.merge('packages').get('meta', True) \
+            and vars['source_suffix'] != '-' + vars['version']
+
+        if self.config.merge('packages').get('docs', True):
+            self.bundle.add('docs', ('real', ), makeflags, vars)
+            if do_meta:
+                self.bundle.add('docs.meta', ('real', ), makeflags, vars)
+        if self.config.merge('packages').get('source', True):
+            self.bundle.add('sourcebin', ('real', ), makeflags, vars)
+            if do_meta:
+                self.bundle.add('sourcebin.meta', ('real', ), makeflags, vars)
+
+    def do_indep_featureset_setup(self, vars, makeflags, featureset, extra):
+        makeflags['LOCALVERSION'] = vars['localversion']
+        kernel_arches = set()
+        for arch in iter(self.config['base', ]['arches']):
+            if self.config.get_merge('base', arch, featureset, None,
+                                     'flavours'):
+                kernel_arches.add(self.config['base', arch]['kernel-arch'])
+        makeflags['ALL_KERNEL_ARCHES'] = ' '.join(sorted(list(kernel_arches)))
+
+        vars['featureset_desc'] = ''
+        if featureset != 'none':
+            desc = self.config[('description', None, featureset)]
+            desc_parts = desc['parts']
+            vars['featureset_desc'] = (' with the %s featureset' %
+                                       desc['part-short-%s' % desc_parts[0]])
+
+    def do_indep_featureset_packages(self, featureset,
+                                     vars, makeflags, extra):
+        self.bundle.add('headers.featureset', (featureset, 'real'), makeflags, vars)
+
+    arch_makeflags = (
+        ('kernel-arch', 'KERNEL_ARCH', False),
+    )
+
+    def do_arch_setup(self, vars, makeflags, arch, extra):
+        config_base = self.config.merge('base', arch)
+
+        self._setup_makeflags(self.arch_makeflags, makeflags, config_base)
+
+        try:
+            gnu_type = subprocess.check_output(
+                ['dpkg-architecture', '-f', '-a', arch,
+                 '-q', 'DEB_HOST_GNU_TYPE'],
+                stderr=subprocess.DEVNULL,
+                encoding='utf-8')
+        except subprocess.CalledProcessError:
+            # This sometimes happens for the newest ports :-/
+            print('W: Unable to get GNU type for %s' % arch, file=sys.stderr)
+        else:
+            vars['gnu-type-package'] = gnu_type.strip().replace('_', '-')
+
+    def do_arch_packages(self, arch, vars, makeflags,
+                         extra):
+        try:
+            abiname_part = '-%s' % self.config['abi', arch]['abiname']
+        except KeyError:
+            abiname_part = self.abiname_part
+        makeflags['ABINAME'] = vars['abiname'] = \
+            self.abiname_version + abiname_part
+
+        if not self.disable_signed:
+            build_signed = self.config.merge('build', arch) \
+                                      .get('signed-code', False)
+        else:
+            build_signed = False
+
+        udeb_packages = self.installer_packages.get(arch, [])
+        if udeb_packages:
+            makeflags_local = makeflags.copy()
+            makeflags_local['PACKAGE_NAMES'] = ' '.join(p['Package'] for p in udeb_packages)
+
+            for package in udeb_packages:
+                package.meta['rules-target'] = build_signed and 'udeb_test' or 'udeb'
+
+            self.bundle.add_packages(
+                udeb_packages,
+                (arch, 'real'),
+                makeflags_local, arch=arch, check_packages=not build_signed,
+            )
+
+        if build_signed:
+            self.bundle.add('signed-template', (arch, 'real'), makeflags, vars, arch=arch)
+
+        if self.config.merge('packages').get('libc-dev', True):
+            self.bundle.add('libc-dev', (arch, 'real'), makeflags, vars)
+
+        if self.config['base', arch].get('featuresets') and \
+           self.config.merge('packages').get('source', True):
+            self.bundle.add('config', (arch, 'real'), makeflags, vars)
+
+        if self.config.merge('packages').get('tools-unversioned', True):
+            self.bundle.add('tools-unversioned', (arch, 'real'), makeflags, vars)
+
+        if self.config.merge('packages').get('tools-versioned', True):
+            self.bundle.add('tools-versioned', (arch, 'real'), makeflags, vars)
+
+    def do_featureset_setup(self, vars, makeflags, arch, featureset, extra):
+        vars['localversion_headers'] = vars['localversion']
+        makeflags['LOCALVERSION_HEADERS'] = vars['localversion_headers']
+
+        self.default_flavour = self.config.merge('base', arch, featureset) \
+                                          .get('default-flavour')
+        if self.default_flavour is not None:
+            if featureset != 'none':
+                raise RuntimeError("default-flavour set for %s %s,"
+                                   " but must only be set for featureset none"
+                                   % (arch, featureset))
+            if self.default_flavour \
+               not in iter_flavours(self.config, arch, featureset):
+                raise RuntimeError("default-flavour %s for %s %s does not exist"
+                                   % (self.default_flavour, arch, featureset))
+
+        self.quick_flavour = self.config.merge('base', arch, featureset) \
+                                        .get('quick-flavour')
+
+    flavour_makeflags_base = (
+        ('compiler', 'COMPILER', False),
+        ('compiler-filename', 'COMPILER', True),
+        ('kernel-arch', 'KERNEL_ARCH', False),
+        ('cflags', 'KCFLAGS', True),
+        ('override-host-type', 'OVERRIDE_HOST_TYPE', True),
+        ('cross-compile-compat', 'CROSS_COMPILE_COMPAT', True),
+    )
+
+    flavour_makeflags_build = (
+        ('image-file', 'IMAGE_FILE', True),
+    )
+
+    flavour_makeflags_image = (
+        ('install-stem', 'IMAGE_INSTALL_STEM', True),
+    )
+
+    flavour_makeflags_other = (
+        ('localversion', 'LOCALVERSION', False),
+        ('localversion-image', 'LOCALVERSION_IMAGE', True),
+    )
+
+    def do_flavour_setup(self, vars, makeflags, arch, featureset, flavour,
+                         extra):
+        config_base = self.config.merge('base', arch, featureset, flavour)
+        config_build = self.config.merge('build', arch, featureset, flavour)
+        config_description = self.config.merge('description', arch, featureset,
+                                               flavour)
+        config_image = self.config.merge('image', arch, featureset, flavour)
+
+        vars['flavour'] = vars['localversion'][1:]
+        vars['class'] = config_description['hardware']
+        vars['longclass'] = (config_description.get('hardware-long')
+                             or vars['class'])
+
+        vars['localversion-image'] = vars['localversion']
+        override_localversion = config_image.get('override-localversion', None)
+        if override_localversion is not None:
+            vars['localversion-image'] = (vars['localversion_headers'] + '-'
+                                          + override_localversion)
+        vars['image-stem'] = config_image.get('install-stem')
+
+        self._setup_makeflags(self.flavour_makeflags_base, makeflags,
+                              config_base)
+        self._setup_makeflags(self.flavour_makeflags_build, makeflags,
+                              config_build)
+        self._setup_makeflags(self.flavour_makeflags_image, makeflags,
+                              config_image)
+        self._setup_makeflags(self.flavour_makeflags_other, makeflags, vars)
+
+    def do_flavour_packages(self, arch, featureset,
+                            flavour, vars, makeflags, extra):
+        ruleid = (arch, featureset, flavour, 'real')
+
+        packages_headers = (
+            self.bundle.add('headers', ruleid, makeflags, vars, arch=arch)
+        )
+        assert len(packages_headers) == 1
+
+        do_meta = self.config.merge('packages').get('meta', True)
+        config_entry_base = self.config.merge('base', arch, featureset,
+                                              flavour)
+        config_entry_build = self.config.merge('build', arch, featureset,
+                                               flavour)
+        config_entry_description = self.config.merge('description', arch,
+                                                     featureset, flavour)
+        config_entry_relations = self.config.merge('relations', arch,
+                                                   featureset, flavour)
+
+        def config_entry_image(key, *args, **kwargs):
+            return self.config.get_merge(
+                'image', arch, featureset, flavour, key, *args, **kwargs)
+
+        compiler = config_entry_base.get('compiler', 'gcc')
+
+        # Work out dependency from linux-headers to compiler.  Drop
+        # dependencies for cross-builds.  Strip any remaining
+        # restrictions, as they don't apply to binary Depends.
+        relations_compiler_headers = PackageRelation(
+            self.substitute(config_entry_relations.get('headers%' + compiler)
+                            or config_entry_relations.get(compiler), vars))
+        relations_compiler_headers = PackageRelation(
+            PackageRelationGroup(
+                entry for entry in group
+                if not restriction_requires_profile(entry.restrictions,
+                                                    'cross'))
+            for group in relations_compiler_headers)
+        for group in relations_compiler_headers:
+            for entry in group:
+                entry.restrictions = []
+
+        relations_compiler_build_dep = PackageRelation(
+            self.substitute(config_entry_relations[compiler], vars))
+        for group in relations_compiler_build_dep:
+            for item in group:
+                item.arches = [arch]
+        self.packages['source']['Build-Depends-Arch'].extend(
+            relations_compiler_build_dep)
+
+        packages_own = []
+
+        if not self.disable_signed:
+            build_signed = config_entry_build.get('signed-code')
+        else:
+            build_signed = False
+
+        vars.setdefault('desc', None)
+
+        package_image = (
+            self.bundle.add(build_signed and 'image-unsigned' or 'image',
+                            ruleid, makeflags, vars, arch=arch)
+        )[0]
+        makeflags['IMAGE_PACKAGE_NAME'] = package_image['Package']
+
+        for field in ('Depends', 'Provides', 'Suggests', 'Recommends',
+                      'Conflicts', 'Breaks'):
+            package_image.setdefault(field).extend(PackageRelation(
+                config_entry_image(field.lower(), None),
+                override_arches=(arch,)))
+
+        generators = config_entry_image('initramfs-generators')
+        group = PackageRelationGroup()
+        for i in generators:
+            i = config_entry_relations.get(i, i)
+            group.append(i)
+            a = PackageRelationEntry(i)
+            if a.operator is not None:
+                a.operator = -a.operator
+                package_image['Breaks'].append(PackageRelationGroup([a]))
+        for item in group:
+            item.arches = [arch]
+        package_image['Depends'].append(group)
+
+        bootloaders = config_entry_image('bootloaders', None)
+        if bootloaders:
+            group = PackageRelationGroup()
+            for i in bootloaders:
+                i = config_entry_relations.get(i, i)
+                group.append(i)
+                a = PackageRelationEntry(i)
+                if a.operator is not None:
+                    a.operator = -a.operator
+                    package_image['Breaks'].append(PackageRelationGroup([a]))
+            for item in group:
+                item.arches = [arch]
+            package_image['Suggests'].append(group)
+
+        desc_parts = self.config.get_merge('description', arch, featureset,
+                                           flavour, 'parts')
+        if desc_parts:
+            # XXX: Workaround, we need to support multiple entries of the same
+            # name
+            parts = list(set(desc_parts))
+            parts.sort()
+            desc = package_image['Description']
+            for part in parts:
+                desc.append(config_entry_description['part-long-' + part])
+                desc.append_short(config_entry_description
+                                  .get('part-short-' + part, ''))
+
+        packages_headers[0]['Depends'].extend(relations_compiler_headers)
+        packages_own.append(package_image)
+        packages_own.extend(packages_headers)
+        if extra.get('headers_arch_depends'):
+            extra['headers_arch_depends'].append('%s (= ${binary:Version})' %
+                                                 packages_own[-1]['Package'])
+
+        # The image meta-packages will depend on signed linux-image
+        # packages where applicable, so should be built from the
+        # signed source packages The header meta-packages will also be
+        # built along with the signed packages, to create a dependency
+        # relationship that ensures src:linux and src:linux-signed-*
+        # transition to testing together.
+        if do_meta and not build_signed:
+            packages_meta = (
+                self.bundle.add('image.meta', ruleid, makeflags, vars, arch=arch)
+            )
+            assert len(packages_meta) == 1
+            packages_meta += (
+                self.bundle.add('headers.meta', ruleid, makeflags, vars, arch=arch)
+            )
+            assert len(packages_meta) == 2
+
+            if flavour == self.default_flavour \
+               and not self.vars['source_suffix']:
+                packages_meta[0].setdefault('Provides') \
+                                .append('linux-image-generic')
+                packages_meta[1].setdefault('Provides') \
+                                .append('linux-headers-generic')
+
+            packages_own.extend(packages_meta)
+
+        if config_entry_build.get('vdso', False):
+            makeflags['VDSO'] = True
+
+        packages_own.extend(
+            self.bundle.add('image-dbg', ruleid, makeflags, vars, arch=arch)
+        )
+        if do_meta:
+            packages_own.extend(
+                self.bundle.add('image-dbg.meta', ruleid, makeflags, vars, arch=arch)
+            )
+
+        # In a quick build, only build the quick flavour (if any).
+        if flavour != self.quick_flavour:
+            for package in packages_own:
+                add_package_build_restriction(package, '!pkg.linux.quick')
+
+        # Make sure signed-template is build after linux
+        if build_signed:
+            self.makefile.add_deps(f'build-arch_{arch}_real_signed-template',
+                                   [f'build-arch_{arch}_{featureset}_{flavour}_real'])
+            self.makefile.add_deps(f'binary-arch_{arch}_real_signed-template',
+                                   [f'binary-arch_{arch}_{featureset}_{flavour}_real'])
+
+        # Make sure udeb is build after linux
+        self.makefile.add_deps(f'build-arch_{arch}_real_udeb',
+                               [f'build-arch_{arch}_{featureset}_{flavour}_real'])
+        self.makefile.add_deps(f'binary-arch_{arch}_real_udeb',
+                               [f'binary-arch_{arch}_{featureset}_{flavour}_real'])
+
+        tests_control = self.templates.get_tests_control('image.tests-control', vars)[0]
+        tests_control['Depends'].append(
+            PackageRelationGroup(package_image['Package'],
+                                 override_arches=(arch,)))
+        if self.tests_control_image:
+            self.tests_control_image['Depends'].extend(
+                tests_control['Depends'])
+        else:
+            self.tests_control_image = tests_control
+            self.tests_control.append(tests_control)
+
+        if flavour == (self.quick_flavour or self.default_flavour):
+            if not self.tests_control_headers:
+                self.tests_control_headers = \
+                        self.templates.get_tests_control('headers.tests-control', vars)[0]
+                self.tests_control.append(self.tests_control_headers)
+            self.tests_control_headers['Architecture'].add(arch)
+            self.tests_control_headers['Depends'].append(
+                PackageRelationGroup(packages_headers[0]['Package'],
+                                     override_arches=(arch,)))
+
+        def get_config(*entry_name):
+            entry_real = ('image',) + entry_name
+            entry = self.config.get(entry_real, None)
+            if entry is None:
+                return None
+            return entry.get('configs', None)
+
+        def check_config_default(fail, f):
+            for d in self.config_dirs[::-1]:
+                f1 = d + '/' + f
+                if os.path.exists(f1):
+                    return [f1]
+            if fail:
+                raise RuntimeError("%s unavailable" % f)
+            return []
+
+        def check_config_files(files):
+            ret = []
+            for f in files:
+                for d in self.config_dirs[::-1]:
+                    f1 = d + '/' + f
+                    if os.path.exists(f1):
+                        ret.append(f1)
+                        break
+                else:
+                    raise RuntimeError("%s unavailable" % f)
+            return ret
+
+        def check_config(default, fail, *entry_name):
+            configs = get_config(*entry_name)
+            if configs is None:
+                return check_config_default(fail, default)
+            return check_config_files(configs)
+
+        kconfig = check_config('config', True)
+        # XXX: We have no way to override kernelarch-X configs
+        kconfig.extend(check_config_default(False,
+                       "kernelarch-%s/config" % config_entry_base['kernel-arch']))
+        kconfig.extend(check_config("%s/config" % arch, True, arch))
+        kconfig.extend(check_config("%s/config.%s" % (arch, flavour), False,
+                                    arch, None, flavour))
+        kconfig.extend(check_config("featureset-%s/config" % featureset, False,
+                                    None, featureset))
+        kconfig.extend(check_config("%s/%s/config" % (arch, featureset), False,
+                                    arch, featureset))
+        kconfig.extend(check_config("%s/%s/config.%s" %
+                                    (arch, featureset, flavour), False,
+                                    arch, featureset, flavour))
+        makeflags['KCONFIG'] = ' '.join(kconfig)
+        makeflags['KCONFIG_OPTIONS'] = ''
+        if build_signed:
+            makeflags['KCONFIG_OPTIONS'] += ' -o SECURITY_LOCKDOWN_LSM=y -o MODULE_SIG=y'
+        # Add "salt" to fix #872263
+        makeflags['KCONFIG_OPTIONS'] += \
+            ' -o "BUILD_SALT=\\"%(abiname)s%(localversion)s\\""' % vars
+        if config_entry_build.get('trusted-certs'):
+            makeflags['KCONFIG_OPTIONS'] += \
+                f' -o "SYSTEM_TRUSTED_KEYS=\\"${{CURDIR}}/{config_entry_build["trusted-certs"]}\\""'
+
+        merged_config = ('debian/build/config.%s_%s_%s' %
+                         (arch, featureset, flavour))
+        self.makefile.add_cmds(merged_config,
+                               ["$(MAKE) -f debian/rules.real %s %s" %
+                                (merged_config, makeflags)])
+
+    def process_changelog(self):
+        version = self.version = self.changelog[0].version
+        self.abiname_part = '-%s' % self.config['abi', ]['abiname']
+        # We need to keep at least three version components to avoid
+        # userland breakage (e.g. #742226, #745984).
+        self.abiname_version = re.sub(r'^(\d+\.\d+)(?=-|$)', r'\1.0',
+                                      self.version.linux_version)
+        self.vars = {
+            'upstreamversion': self.version.linux_upstream,
+            'version': self.version.linux_version,
+            'source_basename': re.sub(r'-[\d.]+$', '',
+                                      self.changelog[0].source),
+            'source_upstream': self.version.upstream,
+            'source_package': self.changelog[0].source,
+            'abiname': self.abiname_version + self.abiname_part,
+        }
+        self.vars['source_suffix'] = \
+            self.changelog[0].source[len(self.vars['source_basename']):]
+        self.config['version', ] = {'source': self.version.complete,
+                                    'upstream': self.version.linux_upstream,
+                                    'abiname_base': self.abiname_version,
+                                    'abiname': (self.abiname_version
+                                                + self.abiname_part)}
+
+        distribution = self.changelog[0].distribution
+        if distribution in ('unstable', ):
+            if version.linux_revision_experimental or \
+               version.linux_revision_backports or \
+               version.linux_revision_other:
+                raise RuntimeError("Can't upload to %s with a version of %s" %
+                                   (distribution, version))
+        if distribution in ('experimental', ):
+            if not version.linux_revision_experimental:
+                raise RuntimeError("Can't upload to %s with a version of %s" %
+                                   (distribution, version))
+        if distribution.endswith('-security') or distribution.endswith('-lts'):
+            if version.linux_revision_backports or \
+               version.linux_revision_other:
+                raise RuntimeError("Can't upload to %s with a version of %s" %
+                                   (distribution, version))
+        if distribution.endswith('-backports'):
+            if not version.linux_revision_backports:
+                raise RuntimeError("Can't upload to %s with a version of %s" %
+                                   (distribution, version))
+
+    def write(self):
+        self.write_config()
+        super().write()
+        self.write_tests_control()
+
+    def write_config(self):
+        f = open("debian/config.defines.dump", 'wb')
+        self.config.dump(f)
+        f.close()
+
+    def write_tests_control(self):
+        self.write_rfc822(open("debian/tests/control", 'w'),
+                          self.tests_control)
+
+
+if __name__ == '__main__':
+    Gencontrol()()
diff --git a/debian/bin/gencontrol_signed.py b/debian/bin/gencontrol_signed.py
new file mode 100755
index 000000000..5a5d7f2de
--- /dev/null
+++ b/debian/bin/gencontrol_signed.py
@@ -0,0 +1,351 @@
+#!/usr/bin/python3
+
+import hashlib
+import json
+import os.path
+import pathlib
+import re
+import ssl
+import subprocess
+import sys
+
+from debian_linux.config import ConfigCoreDump
+from debian_linux.debian import VersionLinux, BinaryPackage
+from debian_linux.gencontrol import Gencontrol as Base, \
+    iter_flavours, PackagesBundle
+from debian_linux.utils import Templates
+
+
+class Gencontrol(Base):
+    def __init__(self, arch):
+        super(Gencontrol, self).__init__(
+            ConfigCoreDump(fp=open('debian/config.defines.dump', 'rb')),
+            Templates(['debian/signing_templates', 'debian/templates']))
+
+        image_binary_version = self.changelog[0].version.complete
+
+        config_entry = self.config[('version',)]
+        self.version = VersionLinux(config_entry['source'])
+
+        # Check config version matches changelog version
+        assert self.version.complete == re.sub(r'\+b\d+$', r'',
+                                               image_binary_version)
+
+        self.abiname = config_entry['abiname']
+        self.vars = {
+            'upstreamversion': self.version.linux_upstream,
+            'version': self.version.linux_version,
+            'source_basename': re.sub(r'-[\d.]+$', '',
+                                      self.changelog[0].source),
+            'source_upstream': self.version.upstream,
+            'abiname': self.abiname,
+            'imagebinaryversion': image_binary_version,
+            'imagesourceversion': self.version.complete,
+            'arch': arch,
+        }
+        self.vars['source_suffix'] = \
+            self.changelog[0].source[len(self.vars['source_basename']):]
+        self.vars['template'] = \
+            'linux-image%(source_suffix)s-%(arch)s-signed-template' % self.vars
+
+        self.package_dir = 'debian/%(template)s' % self.vars
+        self.template_top_dir = (self.package_dir
+                                 + '/usr/share/code-signing/%(template)s'
+                                 % self.vars)
+        self.template_debian_dir = (self.template_top_dir
+                                    + '/source-template/debian')
+        os.makedirs(self.template_debian_dir, exist_ok=True)
+
+        self.image_packages = []
+
+        # We need a separate base dir for now
+        self.bundles = {None: PackagesBundle(None, self.templates,
+                                             pathlib.Path(self.template_debian_dir))}
+        self.packages = self.bundle.packages
+        self.makefile = self.bundle.makefile
+
+    def do_main_setup(self, vars, makeflags, extra):
+        makeflags['VERSION'] = self.version.linux_version
+        makeflags['GENCONTROL_ARGS'] = (
+            '-v%(imagebinaryversion)s '
+            '-DBuilt-Using="%(source_basename)s%(source_suffix)s (= %(imagesourceversion)s)"' %
+            vars)
+        makeflags['PACKAGE_VERSION'] = vars['imagebinaryversion']
+
+        self.installer_packages = {}
+
+        if os.getenv('DEBIAN_KERNEL_DISABLE_INSTALLER'):
+            if self.changelog[0].distribution == 'UNRELEASED':
+                import warnings
+                warnings.warn('Disable installer modules on request '
+                              '(DEBIAN_KERNEL_DISABLE_INSTALLER set)')
+            else:
+                raise RuntimeError(
+                    'Unable to disable installer modules in release build '
+                    '(DEBIAN_KERNEL_DISABLE_INSTALLER set)')
+        elif self.config.merge('packages').get('installer', True):
+            # Add udebs using kernel-wedge
+            kw_env = os.environ.copy()
+            kw_env['KW_DEFCONFIG_DIR'] = 'debian/installer'
+            kw_env['KW_CONFIG_DIR'] = 'debian/installer'
+            kw_proc = subprocess.Popen(
+                ['kernel-wedge', 'gen-control', vars['abiname']],
+                stdout=subprocess.PIPE,
+                text=True,
+                env=kw_env)
+            udeb_packages = BinaryPackage.read_rfc822(kw_proc.stdout)
+            kw_proc.wait()
+            if kw_proc.returncode != 0:
+                raise RuntimeError('kernel-wedge exited with code %d' %
+                                   kw_proc.returncode)
+
+            for package in udeb_packages:
+                for arch in package['Architecture']:
+                    if self.config.merge('build', arch) \
+                                  .get('signed-code', False):
+                        self.installer_packages.setdefault(arch, []) \
+                                               .append(package)
+
+    def do_main_packages(self, vars, makeflags, extra):
+        # Assume that arch:all packages do not get binNMU'd
+        self.packages['source']['Build-Depends'].append(
+            'linux-support-%(abiname)s (= %(imagesourceversion)s)' % vars)
+
+    def do_main_recurse(self, vars, makeflags, extra):
+        # Each signed source package only covers a single architecture
+        self.do_arch(vars['arch'], vars.copy(),
+                     makeflags.copy(), extra)
+
+    def do_extra(self):
+        pass
+
+    def do_arch_setup(self, vars, makeflags, arch, extra):
+        super(Gencontrol, self).do_main_setup(vars, makeflags, extra)
+
+        abiname_part = '-%s' % self.config.merge('abi', arch)['abiname']
+        makeflags['ABINAME'] = vars['abiname'] = \
+            self.config['version', ]['abiname_base'] + abiname_part
+
+    def do_arch_packages(self, arch, vars, makeflags, extra):
+        udeb_packages = self.installer_packages.get(arch, [])
+
+        if udeb_packages:
+            makeflags_local = makeflags.copy()
+            makeflags_local['PACKAGE_NAMES'] = ' '.join(p['Package'] for p in udeb_packages)
+
+            for package in udeb_packages:
+                package.meta['rules-target'] = 'udeb'
+
+            self.bundle.add_packages(
+                udeb_packages,
+                (arch, 'real'),
+                makeflags_local, arch=arch,
+            )
+
+    def do_featureset_setup(self, vars, makeflags, arch, featureset, extra):
+        self.default_flavour = self.config.merge('base', arch, featureset) \
+                                          .get('default-flavour')
+        if self.default_flavour is not None:
+            if featureset != 'none':
+                raise RuntimeError("default-flavour set for %s %s,"
+                                   " but must only be set for featureset none"
+                                   % (arch, featureset))
+            if self.default_flavour \
+               not in iter_flavours(self.config, arch, featureset):
+                raise RuntimeError("default-flavour %s for %s %s does not exist"
+                                   % (self.default_flavour, arch, featureset))
+
+        self.quick_flavour = self.config.merge('base', arch, featureset) \
+                                        .get('quick-flavour')
+
+    def do_flavour_setup(self, vars, makeflags, arch, featureset, flavour,
+                         extra):
+        super(Gencontrol, self).do_flavour_setup(vars, makeflags, arch,
+                                                 featureset, flavour, extra)
+
+        config_description = self.config.merge('description', arch, featureset,
+                                               flavour)
+        config_image = self.config.merge('image', arch, featureset, flavour)
+
+        vars['flavour'] = vars['localversion'][1:]
+        vars['class'] = config_description['hardware']
+        vars['longclass'] = (config_description.get('hardware-long')
+                             or vars['class'])
+
+        vars['image-stem'] = config_image.get('install-stem')
+        makeflags['IMAGE_INSTALL_STEM'] = vars['image-stem']
+
+    def do_flavour_packages(self, arch, featureset,
+                            flavour, vars, makeflags, extra):
+        ruleid = (arch, featureset, flavour, 'real')
+
+        config_build = self.config.merge('build', arch, featureset, flavour)
+        if not config_build.get('signed-code', False):
+            return
+
+        # In a quick build, only build the quick flavour (if any).
+        if 'pkg.linux.quick' in \
+           os.environ.get('DEB_BUILD_PROFILES', '').split() \
+           and flavour != self.quick_flavour:
+            return
+
+        image_suffix = '%(abiname)s%(localversion)s' % vars
+        image_package_name = 'linux-image-%s-unsigned' % image_suffix
+
+        # Verify that this flavour is configured to support Secure Boot,
+        # and get the trusted certificates filename.
+        with open('debian/%s/boot/config-%s' %
+                  (image_package_name, image_suffix)) as f:
+            kconfig = f.readlines()
+        assert 'CONFIG_EFI_STUB=y\n' in kconfig
+        assert 'CONFIG_LOCK_DOWN_IN_EFI_SECURE_BOOT=y\n' in kconfig
+        cert_file_name = config_build['trusted-certs']
+        self.image_packages.append((image_suffix, image_package_name,
+                                    cert_file_name))
+
+        self.packages['source']['Build-Depends'].append(
+            image_package_name
+            + ' (= %(imagebinaryversion)s) [%(arch)s]' % vars)
+
+        packages_own = (
+            self.bundle.add('image',
+                            ruleid, makeflags, vars, arch=arch)
+        )
+
+        if self.config.merge('packages').get('meta', True):
+            packages_meta = (
+                self.bundle.add('image.meta', ruleid, makeflags, vars, arch=arch)
+            )
+            assert len(packages_meta) == 1
+            packages_meta += (
+                self.bundle.add('headers.meta', ruleid, makeflags, vars, arch=arch)
+            )
+            assert len(packages_meta) == 2
+
+            # Don't pretend to support build-profiles
+            for package in packages_meta:
+                del package['Build-Profiles']
+
+            if flavour == self.default_flavour \
+               and not self.vars['source_suffix']:
+                packages_meta[0].setdefault('Provides') \
+                                .append('linux-image-generic')
+                packages_meta[1].setdefault('Provides') \
+                                .append('linux-headers-generic')
+
+            packages_own.extend(packages_meta)
+
+    def write(self):
+        self.bundle.extract_makefile()
+        self.write_changelog()
+        self.write_control(name=(self.template_debian_dir + '/control'))
+        self.write_makefile(name=(self.template_debian_dir + '/rules.gen'))
+        self.write_files_json()
+        self.write_source_lintian_overrides()
+
+    def write_changelog(self):
+        # Copy the linux changelog, but:
+        # * Change the source package name and version
+        # * Insert a line to refer to refer to the linux source version
+        vars = self.vars.copy()
+        vars['source'] = self.changelog[0].source
+        vars['distribution'] = self.changelog[0].distribution
+        vars['urgency'] = self.changelog[0].urgency
+        vars['signedsourceversion'] = \
+            re.sub(r'\+b(\d+)$', r'.b\1',
+                   re.sub(r'-', r'+', vars['imagebinaryversion']))
+
+        with open(self.template_debian_dir + '/changelog', 'w',
+                  encoding='utf-8') as f:
+            f.write(self.substitute('''\
+linux-signed@source_suffix@-@arch@ (@signedsourceversion@) @distribution@; urgency=@urgency@
+
+  * Sign kernel from @source@ @imagebinaryversion@
+
+''',
+                                    vars))
+
+            with open('debian/changelog', 'r', encoding='utf-8') \
+                 as changelog_in:
+                # Ignore first two header lines
+                changelog_in.readline()
+                changelog_in.readline()
+
+                for d in changelog_in.read():
+                    f.write(d)
+
+    def write_files_json(self):
+        # Can't raise from a lambda function :-(
+        def raise_func(e):
+            raise e
+
+        # Some functions in openssl work with multiple concatenated
+        # PEM-format certificates, but others do not.
+        def get_certs(file_name):
+            certs = []
+            BEGIN, MIDDLE = 0, 1
+            state = BEGIN
+            with open(file_name) as f:
+                for line in f:
+                    if line == '-----BEGIN CERTIFICATE-----\n':
+                        assert state == BEGIN
+                        certs.append([])
+                        state = MIDDLE
+                    elif line == '-----END CERTIFICATE-----\n':
+                        assert state == MIDDLE
+                        state = BEGIN
+                    else:
+                        assert line[0] != '-'
+                        assert state == MIDDLE
+                    certs[-1].append(line)
+            assert state == BEGIN
+            return [''.join(cert_lines) for cert_lines in certs]
+
+        def get_cert_fingerprint(cert, algo):
+            hasher = hashlib.new(algo)
+            hasher.update(ssl.PEM_cert_to_DER_cert(cert))
+            return hasher.hexdigest()
+
+        all_files = {'packages': {}}
+
+        for image_suffix, image_package_name, cert_file_name in \
+                self.image_packages:
+            package_dir = 'debian/%s' % image_package_name
+            package_files = []
+            package_modules = []
+            package_files.append({'sig_type': 'efi',
+                                  'file': 'boot/vmlinuz-%s' % image_suffix})
+            for root, dirs, files in os.walk('%s/lib/modules' % package_dir,
+                                             onerror=raise_func):
+                for name in files:
+                    if name.endswith('.ko'):
+                        package_modules.append(
+                            '%s/%s' %
+                            (root[(len(package_dir) + 1):], name))
+            package_modules.sort()
+            for module in package_modules:
+                package_files.append(
+                    {'sig_type': 'linux-module',
+                     'file': module})
+            package_certs = [get_cert_fingerprint(cert, 'sha256')
+                             for cert in get_certs(cert_file_name)]
+            assert len(package_certs) >= 1
+            all_files['packages'][image_package_name] = {
+                'trusted_certs': package_certs,
+                'files': package_files
+            }
+
+        with open(self.template_top_dir + '/files.json', 'w') as f:
+            json.dump(all_files, f)
+
+    def write_source_lintian_overrides(self):
+        os.makedirs(os.path.join(self.template_debian_dir, 'source'),
+                    exist_ok=True)
+        with open(os.path.join(self.template_debian_dir,
+                               'source/lintian-overrides'), 'w') as f:
+            f.write(self.substitute(self.templates.get('source.lintian-overrides'),
+                                    self.vars))
+
+
+if __name__ == '__main__':
+    Gencontrol(sys.argv[1])()
diff --git a/debian/bin/genorig.py b/debian/bin/genorig.py
new file mode 100755
index 000000000..9bf43a34e
--- /dev/null
+++ b/debian/bin/genorig.py
@@ -0,0 +1,169 @@
+#!/usr/bin/python3
+
+import sys
+from debian import deb822
+import glob
+import os
+import os.path
+import shutil
+import subprocess
+import time
+import warnings
+
+from debian_linux.debian import Changelog, VersionLinux
+
+
+class Main(object):
+    def __init__(self, input_repo, override_version):
+        self.log = sys.stdout.write
+
+        self.input_repo = input_repo
+
+        changelog = Changelog(version=VersionLinux)[0]
+        source = changelog.source
+        version = changelog.version
+
+        if override_version:
+            version = VersionLinux('%s-0' % override_version)
+
+        self.version_dfsg = version.linux_dfsg
+        if self.version_dfsg is None:
+            self.version_dfsg = '0'
+
+        self.log('Using source name %s, version %s, dfsg %s\n' %
+                 (source, version.upstream, self.version_dfsg))
+
+        self.orig = '%s-%s' % (source, version.upstream)
+        self.orig_tar = '%s_%s.orig.tar.xz' % (source, version.upstream)
+        self.tag = 'v' + version.linux_upstream_full
+
+    def __call__(self):
+        import tempfile
+        temp_dir = tempfile.mkdtemp(prefix='genorig', dir='debian')
+        old_umask = os.umask(0o022)
+        try:
+            # When given a remote repo, we need a local copy.
+            if not self.input_repo.startswith('/') and ':' in self.input_repo:
+                temp_repo = os.path.join(temp_dir, 'git')
+                subprocess.run(
+                    ['git', 'clone', '--bare', '--depth=1', '-b', self.tag,
+                     self.input_repo, temp_repo],
+                    check=True)
+                self.input_repo = temp_repo
+
+            self.dir = os.path.join(temp_dir, 'export')
+            os.mkdir(self.dir)
+            self.upstream_export(self.input_repo)
+
+            # exclude_files() will change dir mtimes.  Capture the
+            # original release time so we can apply it to the final
+            # tarball.
+            orig_date = time.strftime(
+                "%a, %d %b %Y %H:%M:%S +0000",
+                time.gmtime(
+                    os.stat(os.path.join(self.dir, self.orig, 'Makefile'))
+                    .st_mtime))
+
+            self.exclude_files()
+            os.umask(old_umask)
+            self.tar(orig_date)
+        finally:
+            os.umask(old_umask)
+            shutil.rmtree(temp_dir)
+
+    def upstream_export(self, input_repo):
+        self.log("Exporting %s from %s\n" % (self.tag, input_repo))
+
+        gpg_wrapper = os.path.join(os.getcwd(),
+                                   "debian/bin/git-tag-gpg-wrapper")
+        verify_proc = subprocess.Popen(['git',
+                                        '-c', 'gpg.program=%s' % gpg_wrapper,
+                                        'tag', '-v', self.tag],
+                                       cwd=input_repo)
+        if verify_proc.wait():
+            raise RuntimeError("GPG tag verification failed")
+
+        archive_proc = subprocess.Popen(['git', 'archive', '--format=tar',
+                                         '--prefix=%s/' % self.orig, self.tag],
+                                        cwd=input_repo,
+                                        stdout=subprocess.PIPE)
+        extract_proc = subprocess.Popen(['tar', '-xaf', '-'], cwd=self.dir,
+                                        stdin=archive_proc.stdout)
+
+        ret1 = archive_proc.wait()
+        ret2 = extract_proc.wait()
+        if ret1 or ret2:
+            raise RuntimeError("Can't create archive")
+
+    def exclude_files(self):
+        self.log("Excluding file patterns specified in debian/copyright\n")
+        with open("debian/copyright") as f:
+            header = deb822.Deb822(f)
+        patterns = header.get("Files-Excluded", '').strip().split()
+        for pattern in patterns:
+            matched = False
+            for name in glob.glob(os.path.join(self.dir, self.orig, pattern)):
+                try:
+                    shutil.rmtree(name)
+                except NotADirectoryError:
+                    os.unlink(name)
+                matched = True
+            if not matched:
+                warnings.warn("Exclusion pattern '%s' did not match anything"
+                              % pattern,
+                              RuntimeWarning)
+
+    def tar(self, orig_date):
+        out = os.path.join("../orig", self.orig_tar)
+        try:
+            os.mkdir("../orig")
+        except OSError:
+            pass
+        try:
+            os.stat(out)
+            raise RuntimeError("Destination already exists")
+        except OSError:
+            pass
+        self.log("Generate tarball %s\n" % out)
+
+        env = os.environ.copy()
+        env.update({
+            'LC_ALL': 'C',
+        })
+        cmd = [
+            'tar',
+            '-C', self.dir,
+            '--sort=name',
+            '--mtime={}'.format(orig_date),
+            '--owner=root',
+            '--group=root',
+            '--use-compress-program=xz -T0',
+            '-cf',
+            out, self.orig,
+        ]
+
+        try:
+            subprocess.run(cmd, env=env, check=True)
+            os.chmod(out, 0o644)
+        except BaseException:
+            try:
+                os.unlink(out)
+            except OSError:
+                pass
+            raise
+        try:
+            os.symlink(os.path.join('orig', self.orig_tar),
+                       os.path.join('..', self.orig_tar))
+        except OSError:
+            pass
+
+
+if __name__ == '__main__':
+    from optparse import OptionParser
+    parser = OptionParser(usage="%prog [OPTION]... REPO")
+    parser.add_option("-V", "--override-version", dest="override_version",
+                      help="Override version", metavar="VERSION")
+    options, args = parser.parse_args()
+
+    assert len(args) == 1
+    Main(args[0], options.override_version)()
diff --git a/debian/bin/genpatch-lockdown b/debian/bin/genpatch-lockdown
new file mode 100755
index 000000000..1aed0c735
--- /dev/null
+++ b/debian/bin/genpatch-lockdown
@@ -0,0 +1,109 @@
+#!/usr/bin/python3
+
+import io
+import os
+import os.path
+import re
+import subprocess
+import sys
+
+
+def main(repo, range='torvalds/master..dhowells/efi-lock-down'):
+    patch_dir = 'debian/patches'
+    lockdown_patch_dir = 'features/all/lockdown'
+    series_name = 'series'
+
+    # Only replace patches in this subdirectory and starting with a digit
+    # - the others are presumably Debian-specific for now
+    lockdown_patch_name_re = re.compile(
+        r'^' + re.escape(lockdown_patch_dir) + r'/\d')
+    series_before = []
+    series_after = []
+
+    old_series = set()
+    new_series = set()
+
+    try:
+        with open(os.path.join(patch_dir, series_name), 'r') as series_fh:
+            for line in series_fh:
+                name = line.strip()
+                if lockdown_patch_name_re.match(name):
+                    old_series.add(name)
+                elif len(old_series) == 0:
+                    series_before.append(line)
+                else:
+                    series_after.append(line)
+    except FileNotFoundError:
+        pass
+
+    with open(os.path.join(patch_dir, series_name), 'w') as series_fh:
+        for line in series_before:
+            series_fh.write(line)
+
+        # Add directory prefix to all filenames.
+        # Add Origin to all patch headers.
+        def add_patch(name, source_patch, origin):
+            name = os.path.join(lockdown_patch_dir, name)
+            path = os.path.join(patch_dir, name)
+            try:
+                os.unlink(path)
+            except FileNotFoundError:
+                pass
+            with open(path, 'w') as patch:
+                in_header = True
+                for line in source_patch:
+                    if in_header and re.match(r'^(\n|[^\w\s]|Index:)', line):
+                        patch.write('Origin: %s\n' % origin)
+                        if line != '\n':
+                            patch.write('\n')
+                        in_header = False
+                    patch.write(line)
+            series_fh.write(name)
+            series_fh.write('\n')
+            new_series.add(name)
+
+        # XXX No signature to verify
+
+        env = os.environ.copy()
+        env['GIT_DIR'] = os.path.join(repo, '.git')
+        args = ['git', 'format-patch', '--subject-prefix=', range]
+        format_proc = subprocess.Popen(args,
+                                       cwd=os.path.join(patch_dir,
+                                                        lockdown_patch_dir),
+                                       env=env, stdout=subprocess.PIPE)
+        with io.open(format_proc.stdout.fileno(), encoding='utf-8') as pipe:
+            for line in pipe:
+                name = line.strip('\n')
+                with open(os.path.join(patch_dir, lockdown_patch_dir, name)) \
+                     as source_patch:
+                    patch_from = source_patch.readline()
+                    match = re.match(r'From ([0-9a-f]{40}) ', patch_from)
+                    assert match
+                    origin = ('https://git.kernel.org/pub/scm/linux/kernel/'
+                              'git/dhowells/linux-fs.git/commit?id=%s' %
+                              match.group(1))
+                    add_patch(name, source_patch, origin)
+
+        for line in series_after:
+            series_fh.write(line)
+
+    for name in new_series:
+        if name in old_series:
+            old_series.remove(name)
+        else:
+            print('Added patch', os.path.join(patch_dir, name))
+
+    for name in old_series:
+        print('Obsoleted patch', os.path.join(patch_dir, name))
+
+
+if __name__ == '__main__':
+    if not (2 <= len(sys.argv) <= 3):
+        sys.stderr.write('''\
+Usage: %s REPO [REVISION-RANGE]
+REPO is a git repo containing the REVISION-RANGE.  The default range is
+torvalds/master..dhowells/efi-lock-down.
+''' % sys.argv[0])
+        print('BASE is the base branch (default: torvalds/master).')
+        sys.exit(2)
+    main(*sys.argv[1:])
diff --git a/debian/bin/genpatch-rt b/debian/bin/genpatch-rt
new file mode 100755
index 000000000..66affb076
--- /dev/null
+++ b/debian/bin/genpatch-rt
@@ -0,0 +1,160 @@
+#!/usr/bin/python3
+
+import argparse
+import io
+import os
+import os.path
+import re
+import shutil
+import subprocess
+import sys
+import tempfile
+
+
+def main(source, version, verify_signature):
+    patch_dir = 'debian/patches-rt'
+    series_name = 'series'
+    old_series = set()
+    new_series = set()
+
+    try:
+        with open(os.path.join(patch_dir, series_name), 'r') as series_fh:
+            for line in series_fh:
+                name = line.strip()
+                if name != '' and name[0] != '#':
+                    old_series.add(name)
+    except FileNotFoundError:
+        pass
+
+    with open(os.path.join(patch_dir, series_name), 'w') as series_fh:
+        # Add Origin to all patch headers.
+        def add_patch(name, source_patch, origin):
+            path = os.path.join(patch_dir, name)
+            try:
+                os.unlink(path)
+            except FileNotFoundError:
+                pass
+            with open(path, 'w') as patch:
+                in_header = True
+                for line in source_patch:
+                    if in_header and re.match(r'^(\n|[^\w\s]|Index:)', line):
+                        patch.write('Origin: %s\n' % origin)
+                        if line != '\n':
+                            patch.write('\n')
+                        in_header = False
+                    patch.write(line)
+            new_series.add(name)
+
+        if os.path.isdir(os.path.join(source, '.git')):
+            # Export rebased branch from stable-rt git as patch series
+            up_ver = re.sub(r'-rt\d+$', '', version)
+            env = os.environ.copy()
+            env['GIT_DIR'] = os.path.join(source, '.git')
+            env['DEBIAN_KERNEL_KEYRING'] = 'rt-signing-key.pgp'
+
+            if verify_signature:
+                # Validate tag signature
+                gpg_wrapper = os.path.join(os.getcwd(),
+                                           "debian/bin/git-tag-gpg-wrapper")
+                verify_proc = subprocess.Popen(
+                    ['git', '-c', 'gpg.program=%s' % gpg_wrapper,
+                     'tag', '-v', 'v%s-rebase' % version],
+                    env=env)
+                if verify_proc.wait():
+                    raise RuntimeError("GPG tag verification failed")
+
+            args = ['git', 'format-patch',
+                    'v%s..v%s-rebase' % (up_ver, version)]
+            format_proc = subprocess.Popen(args,
+                                           cwd=patch_dir,
+                                           env=env, stdout=subprocess.PIPE)
+            with io.open(format_proc.stdout.fileno(), encoding='utf-8') \
+                 as pipe:
+                for line in pipe:
+                    name = line.strip('\n')
+                    with open(os.path.join(patch_dir, name)) as source_patch:
+                        patch_from = source_patch.readline()
+                        match = re.match(r'From ([0-9a-f]{40}) ', patch_from)
+                        assert match
+                        origin = ('https://git.kernel.org/cgit/linux/kernel/'
+                                  'git/rt/linux-stable-rt.git/commit?id=%s' %
+                                  match.group(1))
+                        add_patch(name, source_patch, origin)
+                        series_fh.write(line)
+
+        else:
+            # Get version and upstream version
+            if version is None:
+                match = re.search(r'(?:^|/)patches-(.+)\.tar\.[gx]z$', source)
+                assert match, 'no version specified or found in filename'
+                version = match.group(1)
+            match = re.match(r'^(\d+\.\d+)(?:\.\d+|-rc\d+)?-rt\d+$', version)
+            assert match, 'could not parse version string'
+            up_ver = match.group(1)
+
+            if verify_signature:
+                # Expect an accompanying signature, and validate it
+                source_sig = re.sub(r'.[gx]z$', '.sign', source)
+                unxz_proc = subprocess.Popen(['xzcat', source],
+                                             stdout=subprocess.PIPE)
+                verify_output = subprocess.check_output(
+                    ['gpgv', '--status-fd', '1',
+                     '--keyring', 'debian/upstream/rt-signing-key.pgp',
+                     '--ignore-time-conflict', source_sig, '-'],
+                    stdin=unxz_proc.stdout,
+                    text=True)
+                if unxz_proc.wait() or \
+                   not re.search(r'^\[GNUPG:\]\s+VALIDSIG\s',
+                                 verify_output, re.MULTILINE):
+                    sys.stderr.write(verify_output)
+                    raise RuntimeError("GPG signature verification failed")
+
+            temp_dir = tempfile.mkdtemp(prefix='rt-genpatch', dir='debian')
+            try:
+                # Unpack tarball
+                subprocess.check_call(['tar', '-C', temp_dir, '-xaf', source])
+                source_dir = os.path.join(temp_dir, 'patches')
+                assert os.path.isdir(source_dir), \
+                    'tarball does not contain patches directory'
+
+                # Copy patch series
+                origin = ('https://www.kernel.org/pub/linux/kernel/projects/'
+                          'rt/%s/older/patches-%s.tar.xz' %
+                          (up_ver, version))
+                with open(os.path.join(source_dir, 'series'), 'r') \
+                     as source_series_fh:
+                    for line in source_series_fh:
+                        name = line.strip()
+                        if name != '' and name[0] != '#':
+                            with open(os.path.join(source_dir, name)) \
+                                 as source_patch:
+                                add_patch(name, source_patch, origin)
+                        series_fh.write(line)
+            finally:
+                shutil.rmtree(temp_dir)
+
+    for name in new_series:
+        if name in old_series:
+            old_series.remove(name)
+        else:
+            print('Added patch', os.path.join(patch_dir, name))
+
+    for name in old_series:
+        print('Obsoleted patch', os.path.join(patch_dir, name))
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(
+        description='Generate or update the rt featureset patch series')
+    parser.add_argument(
+        'source', metavar='SOURCE', type=str,
+        help='tarball of patches or git repo containing the given RT-VERSION')
+    parser.add_argument(
+        'version', metavar='RT-VERSION', type=str, nargs='?',
+        help='rt kernel version (optional for tarballs)')
+    parser.add_argument(
+        '--verify-signature', action=argparse.BooleanOptionalAction,
+        default=True,
+        help='verify signature on tarball (detached in .sign file) or git tag')
+    args = parser.parse_args()
+    main(args.source, args.version, args.verify_signature)
diff --git a/debian/bin/getconfig.py b/debian/bin/getconfig.py
new file mode 100755
index 000000000..b719a17a1
--- /dev/null
+++ b/debian/bin/getconfig.py
@@ -0,0 +1,25 @@
+#!/usr/bin/python3
+
+import sys
+
+from debian_linux.config import ConfigCoreDump
+
+section = tuple(s or None for s in sys.argv[1:-1])
+key = sys.argv[-1]
+config = ConfigCoreDump(fp=open("debian/config.defines.dump", "rb"))
+try:
+    value = config[section][key]
+except KeyError:
+    sys.exit(1)
+
+if isinstance(value, str):
+    # Don't iterate over it
+    print(value)
+else:
+    # In case it's a sequence, try printing each item
+    try:
+        for item in value:
+            print(item)
+    except TypeError:
+        # Otherwise use the default format
+        print(value)
diff --git a/debian/bin/git-tag-gpg-wrapper b/debian/bin/git-tag-gpg-wrapper
new file mode 100755
index 000000000..43030206f
--- /dev/null
+++ b/debian/bin/git-tag-gpg-wrapper
@@ -0,0 +1,42 @@
+#!/bin/bash -e
+
+# Instead of calling gpg, call gpgv and provide a local keyring
+
+debian_dir="$(readlink -f "$(dirname "$0")/..")"
+
+# Parse the expected options.  If the next two lines are combined, a
+# failure of getopt won't cause the script to exit.
+ordered_args="$(getopt -n "$0" -o "" -l "status-fd:" -l "keyid-format:" -l "verify" -- "$@")"
+eval "set -- $ordered_args"
+gpgv_opts=()
+while true; do
+    case "$1" in
+	--status-fd)
+	    gpgv_opts+=(--status-fd $2)
+	    shift 2
+	    ;;
+	--keyid-format)
+	    # ignore
+	    shift 2
+	    ;;
+	--verify)
+	    # ignore
+	    shift 1
+	    ;;
+	--)
+	    shift 1
+	    break
+	    ;;
+    esac
+done
+
+keyring="$debian_dir/upstream/${DEBIAN_KERNEL_KEYRING:-signing-key.asc}"
+case "$keyring" in
+    *.asc)
+	keyring_armored="$keyring"
+	keyring="$(mktemp)"
+	trap 'rm -f "$keyring"' EXIT
+	gpg  --dearmor <"$keyring_armored" > "$keyring"
+	;;
+esac
+gpgv "${gpgv_opts[@]}" --keyring "$keyring" -- "$@"
diff --git a/debian/bin/kconfig.py b/debian/bin/kconfig.py
new file mode 100755
index 000000000..6115355f4
--- /dev/null
+++ b/debian/bin/kconfig.py
@@ -0,0 +1,39 @@
+#!/usr/bin/python3
+
+import optparse
+import re
+
+from debian_linux.kconfig import KconfigFile
+
+
+def merge(output, configs, overrides):
+    kconfig = KconfigFile()
+    for c in configs:
+        kconfig.read(open(c))
+    for key, value in overrides.items():
+        kconfig.set(key, value)
+    open(output, "w").write(str(kconfig))
+
+
+def opt_callback_dict(option, opt, value, parser):
+    match = re.match(r'^\s*(\S+)=(\S+)\s*$', value)
+    if not match:
+        raise optparse.OptionValueError('not key=value')
+    dest = option.dest
+    data = getattr(parser.values, dest)
+    data[match.group(1)] = match.group(2)
+
+
+if __name__ == '__main__':
+    parser = optparse.OptionParser(usage="%prog [OPTION]... FILE...")
+    parser.add_option(
+        '-o', '--override',
+        action='callback',
+        callback=opt_callback_dict,
+        default={},
+        dest='overrides',
+        help="Override option",
+        type='string')
+    options, args = parser.parse_args()
+
+    merge(args[0], args[1:], options.overrides)
diff --git a/debian/bin/no-depmod b/debian/bin/no-depmod
new file mode 100755
index 000000000..ed5a8463f
--- /dev/null
+++ b/debian/bin/no-depmod
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+set -e
+
+# This is a dummy substitute for depmod.  Since we run depmod during
+# postinst, we do not need or want to package the files that it
+# generates.
+
+if [ "x$1" = x-V ]; then
+    # Satisfy version test
+    echo 'not really module-init-tools'
+elif [ "x$1" = x-b -a "${2%/depmod.??????}" != "$2" ]; then
+    # Satisfy test of short kernel versions
+    mkdir -p "$2/lib/modules/$3"
+    touch "$2/lib/modules/$3/modules.dep"
+else
+    echo 'skipping depmod'
+fi
diff --git a/debian/bin/stable-update b/debian/bin/stable-update
new file mode 100755
index 000000000..0ce6112bb
--- /dev/null
+++ b/debian/bin/stable-update
@@ -0,0 +1,135 @@
+#!/usr/bin/python3
+
+import sys
+import os
+import re
+import subprocess
+
+from debian_linux.debian import Changelog, VersionLinux
+
+
+def base_version(ver):
+    # Assume base version is at least 3.0, thus only 2 components wanted
+    match = re.match(r'^(\d+\.\d+)', ver)
+    assert match
+    return match.group(1)
+
+
+def add_update(ver, inc):
+    base = base_version(ver)
+    if base == ver:
+        update = 0
+    else:
+        update = int(ver[len(base)+1:])
+    update += inc
+    if update == 0:
+        return base
+    else:
+        return '{}.{}'.format(base, update)
+
+
+def next_update(ver):
+    return add_update(ver, 1)
+
+
+def print_stable_log(log, cur_ver, new_ver):
+    major_ver = re.sub(r'^(\d+)\..*', r'\1', cur_ver)
+    while cur_ver != new_ver:
+        next_ver = next_update(cur_ver)
+        print('    https://www.kernel.org/pub/linux/kernel/v{}.x/ChangeLog-{}'
+              .format(major_ver, next_ver),
+              file=log)
+        log.flush()  # serialise our output with git's
+        subprocess.check_call(['git', 'log', '--reverse',
+                               '--pretty=    - %s',
+                               'v{}..v{}^'.format(cur_ver, next_ver)],
+                              stdout=log)
+        cur_ver = next_ver
+
+
+def main(repo, new_ver):
+    if os.path.exists(os.path.join(repo, '.git')):
+        os.environ['GIT_DIR'] = os.path.join(repo, '.git')
+    else:
+        os.environ['GIT_DIR'] = repo
+
+    changelog = Changelog(version=VersionLinux)
+    cur_pkg_ver = changelog[0].version
+    cur_ver = cur_pkg_ver.linux_upstream_full
+
+    if base_version(new_ver) != base_version(cur_ver):
+        print('{} is not on the same stable series as {}'
+              .format(new_ver, cur_ver),
+              file=sys.stderr)
+        sys.exit(2)
+
+    new_pkg_ver = new_ver + '-1'
+    if cur_pkg_ver.linux_revision_experimental:
+        new_pkg_ver += '~exp1'
+
+    # Three possible cases:
+    # 1. The current version has been released so we need to add a new
+    #    version to the changelog.
+    # 2. The current version has not been released so we're changing its
+    #    version string.
+    #    (a) There are no stable updates included in the current version,
+    #        so we need to insert an introductory line, the URL(s) and
+    #        git log(s) and a blank line at the top.
+    #    (b) One or more stable updates are already included in the current
+    #        version, so we need to insert the URL(s) and git log(s) after
+    #        them.
+
+    changelog_intro = 'New upstream stable update:'
+
+    # Case 1
+    if changelog[0].distribution != 'UNRELEASED':
+        subprocess.check_call(['dch', '-v', new_pkg_ver, '-D', 'UNRELEASED',
+                               changelog_intro])
+
+    with open('debian/changelog', 'r') as old_log:
+        with open('debian/changelog.new', 'w') as new_log:
+            line_no = 0
+            inserted = False
+            intro_line = '  * {}\n'.format(changelog_intro)
+
+            for line in old_log:
+                line_no += 1
+
+                # Case 2
+                if changelog[0].distribution == 'UNRELEASED' and line_no == 1:
+                    print('{} ({}) UNRELEASED; urgency={}'
+                          .format(changelog[0].source, new_pkg_ver,
+                                  changelog[0].urgency),
+                          file=new_log)
+                    continue
+
+                if not inserted:
+                    # Case 2(a)
+                    if line_no == 3 and line != intro_line:
+                        new_log.write(intro_line)
+                        print_stable_log(new_log, cur_ver, new_ver)
+                        new_log.write('\n')
+                        inserted = True
+                    # Case 1 or 2(b)
+                    elif line_no > 3 and line == '\n':
+                        print_stable_log(new_log, cur_ver, new_ver)
+                        inserted = True
+
+                # Check that we inserted before hitting the end of the
+                # first version entry
+                assert not (line.startswith(' -- ') and not inserted)
+
+                new_log.write(line)
+
+    os.rename('debian/changelog.new', 'debian/changelog')
+
+
+if __name__ == '__main__':
+    if len(sys.argv) != 3:
+        print('''\
+Usage: {} REPO VERSION
+REPO is the git repository to generate a changelog from
+VERSION is the stable version (without leading v)'''.format(sys.argv[0]),
+              file=sys.stderr)
+        sys.exit(2)
+    main(*sys.argv[1:])
diff --git a/debian/bin/stable-update.sh b/debian/bin/stable-update.sh
new file mode 100755
index 000000000..bd86860c6
--- /dev/null
+++ b/debian/bin/stable-update.sh
@@ -0,0 +1,2 @@
+#!/bin/sh -e
+exec "$(dirname "$0")/stable-update" "$@"
diff --git a/debian/bin/test-patches b/debian/bin/test-patches
new file mode 100755
index 000000000..ad0d77add
--- /dev/null
+++ b/debian/bin/test-patches
@@ -0,0 +1,142 @@
+#!/bin/bash
+
+set -e
+shopt -s extglob
+
+# Set defaults from the running kernel
+arch="$(dpkg --print-architecture)"
+kernelabi="$(uname -r)"
+ff="${kernelabi#+([^-])-@(trunk|?(rc)+([0-9])|0.@(bpo|deb+([0-9])).+([0-9]))-}"
+if [ "x$ff" != "x$kernelabi" ]; then
+    flavour="${ff#@(openvz|rt|vserver|xen)-}"
+    if [ "x$flavour" != "x$ff" ]; then
+	featureset="${ff%-$flavour}"
+    else
+	featureset=none
+    fi
+else
+    flavour=
+    featureset=none
+fi
+
+dbginfo=
+fuzz=0
+jobs=$(nproc)
+
+eval "set -- $(getopt -n "$0" -o "f:gj:s:" -l "fuzz:" -- "$@")"
+while true; do
+    case "$1" in
+	-f) flavour="$2"; shift 2 ;;
+	-g) dbginfo=y; shift 1 ;;
+	-j) jobs="$2"; shift 2 ;;
+	-s) featureset="$2"; shift 2 ;;
+	--fuzz) fuzz="$2"; shift 2;;
+	--) shift 1; break ;;
+    esac
+done
+	    
+if [ $# -lt 1 ]; then
+    echo >&2 "Usage: $0 [<options>] <patch>..."
+    cat >&2 <<EOF
+Options:
+     -f <flavour>     specify the 'flavour' of kernel to build, e.g. 686-pae
+     -g               enable debug info
+     -j <jobs>        specify number of compiler jobs to run in parallel
+                      (default: number of available processors)
+     -s <featureset>  specify an optional featureset to apply, e.g. rt
+     --fuzz <num>     set the maximum patch fuzz factor (default: 0)
+EOF
+    exit 2
+fi
+
+if [ -z "$flavour" ]; then
+    echo >&2 "You must specify a flavour to build with the -f option"
+    exit 2
+fi
+
+profiles=nodoc,noudeb,pkg.linux.nosource,pkg.linux.mintools
+if [ -z "$dbginfo" ]; then
+    profiles="$profiles,pkg.linux.nokerneldbg,pkg.linux.nokerneldbginfo"
+fi
+
+# Check build-dependencies early if possible
+if [ -f debian/control ]; then
+    dpkg-checkbuilddeps -P"$profiles"
+fi
+
+# Append 'a~test' to Debian version; this should be less than any official
+# successor and easily recognisable
+version="$(dpkg-parsechangelog | sed 's/^Version: //; t; d')"
+if [ "${version%a~test}" = "$version" ]; then
+    version="$version"a~test
+    dch -v "$version" --distribution UNRELEASED "Testing patches $*"
+fi
+
+# Ignore user's .quiltrc
+alias quilt='quilt --quiltrc -'
+
+# Try to clean up any previous test patches
+if [ "$featureset" = none ]; then
+    patchdir=debian/patches
+    while patch="$(quilt top 2>/dev/null)" && \
+	[ "${patch#test/}" != "$patch" ]; do
+        quilt pop -f
+    done
+    while patch="$(quilt next 2>/dev/null)" && \
+	[ "${patch#test/}" != "$patch" ]; do
+        quilt delete -r "$patch"
+    done
+else
+    patchdir=debian/patches-${featureset}
+    sed -i '/^test\//d' $patchdir/series
+fi
+
+# Prepare a new directory for the patches
+rm -rf $patchdir/test/
+mkdir $patchdir/test
+
+# Prepare a new directory for the config; override ABI name, featuresets, flavours
+rm -rf debian/config.local
+mkdir debian/config.local debian/config.local/"$arch" debian/config.local/"$arch"/"$featureset"
+cat >debian/config.local/defines <<EOF
+[abi]
+abiname: 0.a.test
+EOF
+cat >debian/config.local/"$arch"/defines <<EOF
+[base]
+featuresets: $featureset
+EOF
+cat >debian/config.local/"$arch"/"$featureset"/defines <<EOF
+[base]
+flavours: $flavour
+EOF
+if [ "$featureset" = none ]; then
+    # default-flavour must refer to a flavour that's enabled
+    cat >>debian/config.local/"$arch"/"$featureset"/defines <<EOF
+default-flavour: $flavour
+EOF
+fi
+
+# Regenerate control and included rules
+rm -f debian/control debian/rules.gen
+debian/rules debian/control-real && exit 1 || true
+test -f debian/control
+test -f debian/rules.gen
+
+# Check build-dependencies now that we know debian/control exists
+dpkg-checkbuilddeps -P"$profiles"
+
+# Clean up old build; apply existing patches for featureset
+debian/rules clean
+debian/rules source
+
+# Apply the additional patches
+for patch in "$@"; do
+    patch_abs="$(readlink -f "$patch")"
+    (cd "debian/build/source_${featureset}" && \
+     quilt import -P "test/$(basename "$patch")" "$patch_abs" && \
+     quilt push --fuzz="$fuzz")
+done
+
+# Build selected binaries
+dpkg-buildpackage -b -P"$profiles" -j"$jobs" -nc -uc
diff --git a/debian/bin/update-bug-taint-list b/debian/bin/update-bug-taint-list
new file mode 100755
index 000000000..76bb1fc2e
--- /dev/null
+++ b/debian/bin/update-bug-taint-list
@@ -0,0 +1,24 @@
+#!/bin/sh -eu
+
+temp="$(mktemp)"
+trap 'rm -f "$temp"' EXIT
+
+# Copy everything above the existing flag checks.
+sed -rne '/^ +_check /q; p' \
+  < debian/templates/image.bug/include-1tainted >"$temp"
+
+# Generate flag checks from the table in tainted-kernels.rst.  We
+# could alternatively extract them from sysctl/kernel.rst or in the C
+# sources, but this is easy to find and parse and is likely to have
+# the most useful descriptions.
+sed -rne '/^Bit +Log +Number +Reason/,/^$/ {
+              s/^ *([0-9]+) +.\/(.) +[0-9]+ +(.*)/    _check \1 \2 '\''\3'\''/p
+	  }' \
+  < Documentation/admin-guide/tainted-kernels.rst >>"$temp"
+
+# Copy everything below the existing flag checks.
+sed -rne '/^ +echo "\*\* Tainted:/,$p' \
+  < debian/templates/image.bug/include-1tainted >>"$temp"
+
+# Update the bug script in-place.
+cp "$temp" debian/templates/image.bug/include-1tainted