# Produces a Manufacturing Tool compatible Linux Kernel
#
# This makes a separated binary set for Manufacturing Tool use
# without clobbering the Linux Kernel used for normal use.
#
# This file must be included after the original linux-imx.inc file
# as it overrides the needed values.
#
# Copyright (C) 2014, 2015, 2018 O.S. Systems Software LTDA.

# Adjust provides
PROVIDES = "linux-mfgtool"

# Avoid coliding files
LOCALVERSION_append = "-mfgtool"
KERNEL_SRC_PATH = "/usr/src/kernel-mfgtool"
KERNEL_IMAGE_BASE_NAME = "${KERNEL_IMAGETYPE}-mfgtool-${PKGE}-${PKGV}-${PKGR}-${MACHINE}-${DATETIME}"
KERNEL_IMAGE_BASE_NAME[vardepsexclude] = "DATETIME"
KERNEL_IMAGE_SYMLINK_NAME = "${KERNEL_IMAGETYPE}-mfgtool-${MACHINE}"
MODULE_IMAGE_BASE_NAME = "modules-mfgtool-${PKGE}-${PKGV}-${PKGR}-${MACHINE}-${DATETIME}"
MODULE_TARBALL_SYMLINK_NAME = "modules-mfgtool-${MACHINE}.tgz"
STAGING_KERNEL_DIR = "${TMPDIR}/work-shared/${MACHINE}/kernel-mfgtool-source"
STAGING_KERNEL_BUILDDIR = "${TMPDIR}/work-shared/${MACHINE}/kernel-mfgtool-build-artifacts"

# Ensures we prefer our mfgtool specific files
FILESEXTRAPATHS_prepend := "${THISDIR}/${ORIG_PN}-${PV}:${THISDIR}/${ORIG_PN}:"

python mfgtool_recipe_handler () {
    pn = e.data.getVar("PN", True)
    if not (pn.endswith("-mfgtool") or pn.startswith("mfgtool-")):
        return

    e.data.setVar("MLPREFIX", "mfgtool-")
    e.data.setVar("ORIG_PN", e.data.getVar("PN", True))
    e.data.setVar("PN", "mfgtool-" + e.data.getVar("PN", True).replace("-mfgtool", "").replace("mfgtool-", ""))
}

python () {
    pn = d.getVar("PN", True)
    if not pn.startswith("mfgtool-"):
        return

    from oe.classextend import ClassExtender

    # We need to expand KERNEL_VERSION at runtime, not at parse time
    # The class extension code can expand variables early so remove
    # the variable from the datastore temporarily and then restore
    kernver = d.getVar("KERNEL_VERSION", False)
    kernverpkgname = d.getVar("KERNEL_VERSION_PKG_NAME", False)
    d.delVar("KERNEL_VERSION")
    d.delVar("KERNEL_VERSION_PKG_NAME")

    class LinuxMfgToolExtender(ClassExtender):
        def extend_name(self, name):
            if name.startswith("kernel-"):
                return self.extname + "-" + name
            return super().extend_name(name)

    clsextend = LinuxMfgToolExtender("mfgtool", d)
    clsextend.rename_packages()
    clsextend.rename_package_variables((d.getVar("PACKAGEVARS", True) or "").split())

    clsextend.map_packagevars()
    clsextend.map_regexp_variable("PACKAGES_DYNAMIC")

    d.setVar("KERNEL_VERSION", kernver)
    d.setVar("KERNEL_VERSION_PKG_NAME", kernverpkgname)
}

addhandler mfgtool_recipe_handler
mfgtool_recipe_handler[eventmask] = "bb.event.RecipePreFinalise"

# FIXME: Avoid depmod data emiting as kernel-abiversion path is
#        hardcoded.
emit_depmod_pkgdata() {
    :
}

# FIXME: We need to remove the STAGING_KERNEL_BUILDDIR contents as
#        kernel.bbclass has no way to skip its installation.
# FIXME: It is not possible to have external modules against
#        this kernel variant.
do_install_append() {
    rm -r ${STAGING_KERNEL_BUILDDIR}
}

POPULATESYSROOTDEPS_class-target = "virtual/${TARGET_PREFIX}binutils:do_populate_sysroot"