xen: separate recipes for hypervisor and tools; switch to git as source

This change changes the names of many packages produced: the
xen-tools recipe now builds packages previous built by the xen
recipe, so the package prefix changes from "xen-" to "xen-tools-".
A temporary bbappend is provided for qemu to ease the transition.

Multiple motivations for recipe separation:
- improves efficiency of incremental build and development
- supports building the hypervisor and tools with different toolchains
  and for different architectures

Switch to using a git recipe on the Xen stable branch:
- enables easier tracking of critical XSA security updates applied
  upstream by just advancing SRCREV along the branch
Revision has been set to the tip of the stable-4.12 branch, which
has the one XSA-312 patch applied on top of RELEASE-4.12.2.

The recipe refactor externalizes the block tap components, to enable optional
building of blktap in a separate recipe outside xen-tools, needed by OpenXT.

xenstored is made a virtual package to support switching between
alternative implementations (several exist).

Update xen-image-minimal to install the xen-tools package, which
replaces what was previously xen-base.

Determine the flask policy filename, which is Xen-version specific,
using the same method as the Xen build system.

qemu: update PACKAGECONFIG[xen] for xen package renaming: allows builds
to continue correctly in the meantime while openembedded core and poky
are updated.

OpenXT ticket reference: OXT-1694

Signed-off-by: Christopher Clark <christopher.clark6@baesystems.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>

1 files changed, 94 insertions, 0 deletions

diff --git a/recipes-extended/xen/xen-hypervisor.inc b/recipes-extended/xen/xen-hypervisor.inc
new file mode 100644
index 00000000..c0df1580
--- /dev/null
+++ b/recipes-extended/xen/xen-hypervisor.inc
@@ -0,0 +1,94 @@
+SUMMARY = "Xen hypervisor"
+DESCRIPTION = "The Xen hypervisor"
+
+# This recipe is for just the Xen hypervisor.
+# Separate recipes are used to build Xen and its components:
+# this allows for varying the target architecture or toolchain used
+# to build the different components. eg. 32-bit tools and a 64-bit hypervisor.
+
+inherit deploy
+
+PACKAGES = " \
+    ${PN} \
+    ${PN}-dbg \
+    ${PN}-efi \
+    "
+
+FILES_${PN} = " \
+    /boot/xen-* \
+    /boot/xen \
+    /boot/xen-*.gz \
+    /boot/xen.gz \
+    /boot/xen-syms-* \
+    "
+
+FILES_${PN}-dbg += "${libdir}/debug/*"
+
+FILES_${PN}-efi = " \
+    /boot/xen.efi \
+    ${exec_prefix}/lib64/efi/xen* \
+    "
+
+do_configure() {
+    do_configure_common
+}
+
+do_compile() {
+    oe_runmake xen
+}
+
+do_install() {
+    oe_runmake DESTDIR="${D}" install-xen
+}
+
+do_deploy() {
+    install -d ${DEPLOYDIR}
+
+    if [ -f ${D}/boot/xen ]; then
+        install -m 0644 ${D}/boot/xen ${DEPLOYDIR}/xen-${MACHINE}
+    fi
+
+    if [ -f ${D}/boot/xen.gz ]; then
+        install -m 0644 ${D}/boot/xen.gz ${DEPLOYDIR}/xen-${MACHINE}.gz
+    fi
+
+    if [ -f ${D}/usr/lib64/efi/xen.efi ]; then
+        install -m 0644 ${D}/usr/lib64/efi/xen.efi ${DEPLOYDIR}/xen-${MACHINE}.efi
+    fi
+}
+
+addtask deploy after do_populate_sysroot
+
+# Enable use of menuconfig directly from bitbake and also within the devshell
+OE_TERMINAL_EXPORTS += "HOST_EXTRACFLAGS HOSTLDFLAGS TERMINFO"
+HOST_EXTRACFLAGS = "${BUILD_CFLAGS} ${BUILD_LDFLAGS}"
+HOSTLDFLAGS = "${BUILD_LDFLAGS}"
+TERMINFO = "${STAGING_DATADIR_NATIVE}/terminfo"
+do_devshell[depends] += "ncurses-native:do_populate_sysroot"
+
+KCONFIG_CONFIG_COMMAND ??= "menuconfig"
+python do_menuconfig() {
+    import shutil
+
+    try:
+        mtime = os.path.getmtime("xen/.config")
+        shutil.copy("xen/.config", "xen/.config.orig")
+    except OSError:
+        mtime = 0
+
+    oe_terminal("${SHELL} -c \"cd xen; XEN_CONFIG_EXPERT=y make %s; if [ \$? -ne 0 ]; then echo 'Command failed.'; printf 'Press any key to continue... '; read r; fi\"" % d.getVar('KCONFIG_CONFIG_COMMAND'),
+        d.getVar('PN') + ' Configuration', d)
+
+    try:
+        newmtime = os.path.getmtime("xen/.config")
+    except OSError:
+        newmtime = 0
+
+    if newmtime > mtime:
+        bb.note("Configuration changed, recompile will be forced")
+        bb.build.write_taint('do_compile', d)
+}
+do_menuconfig[depends] += "ncurses-native:do_populate_sysroot"
+do_menuconfig[nostamp] = "1"
+do_menuconfig[dirs] = "${B}"
+addtask menuconfig after do_configure