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+# Common include file that defines AGL's variables for kernel
+# configuration.
+#
+# Can be included directly for kernel.bbclass based recipes that
+# use their own config fragment merging scheme, or use the
+# KERNEL_CONFIG_FRAGMENTS variable (e.g. meta-ti, meta-qcom).
+#
+# Fragments should be added to AGL_KCONFIG_FRAGMENTS as just the
+# .cfg filename with +=. Appending to AGL_KCONFIG_FRAGMENTS (i.e.
+# using _append) should only be done for:
+# - Specific AGL features that set an override in their feature
+# template, e.g. agl-netboot.
+# - To add essential configuration for core target machines like
+# qemu. Note that appending fragments directly to SRC_URI
+# would work for qemu targets since they use linux-yocto, but
+# the AGL_KCONFIG_FRAGMENTS mechanism is recommended for
+# consistency and to preserve the option of disabling all AGL
+# additions by overriding AGL_KERNEL_SRC.
+#
+# In general, care shoud be taken to preserve the ability to set
+# AGL_KCONFIG_FRAGMENTS to "" to disable non-essential (from a build
+# perspective) AGL additions.
+#
+
+FILESEXTRAPATHS_prepend := "${THISDIR}/linux:"
+
+# NOTE: AGL_KERNEL_SRC is explicitly intended as an intermediate variable
+# that can be used as a last resort to completely disable all AGL
+# additions, modifying or appending it is not recommended.
+AGL_KERNEL_SRC ?= "${@' '.join(['file://' + x for x in d.getVar('AGL_KCONFIG_FRAGMENTS').split()])}"
+
+SRC_URI_append = " ${AGL_KERNEL_SRC}"
+
+# For meta-ti and meta-qcom
+KERNEL_CONFIG_FRAGMENTS ?= "${@' '.join(['${WORKDIR}/' + x for x in d.getVar('AGL_KCONFIG_FRAGMENTS').split()])}"
+
+# Extra configuration options for the AGL kernel
+AGL_KCONFIG_FRAGMENTS += " \
+ can-bus.cfg \
+ fanotify.cfg \
+ overlayfs.cfg \
+"
+
+AGL_KCONFIG_FRAGMENTS += " ${@bb.utils.contains('AGL_XEN_GUEST_WANTED','1','xen_domu.cfg','',d)}"
+
+# Base ALSA support and other sound related configuration
+AGL_KCONFIG_FRAGMENTS += "sound.cfg"
+
+# Enable support for SystemTap
+AGL_KCONFIG_FRAGMENTS += "${@bb.utils.contains('DISTRO_FEATURES', 'agl-devel', 'systemtap.cfg', '', d)}"
+
+#
+# Feature override and qemu specific appends:
+#
+
+# Enable required features for the agl-netboot feature
+AGL_KCONFIG_FRAGMENTS_append_netboot = " \
+ nbd.cfg \
+ ramdisk.cfg \
+"
+
+# Add hda audio and required virtio device support for qemu
+AGL_KCONFIG_FRAGMENTS_append_qemuall = " \
+ sound-hda.cfg \
+ qemu-virtio.cfg \
+ qemu-drm.cfg \
+"
+
+# Configuration for using the ARM virt machine (and not versatilepb)
+AGL_KCONFIG_FRAGMENTS_append_qemuarm = " qemuarm.cfg"
+
+# Additional drivers for virtual machines
+# OVERRIDES save us some c'n'p below ...
+OVERRIDES_prepend_qemux86 = "virtualmachine:"
+OVERRIDES_prepend_qemux86-64 = "virtualmachine:"
+AGL_KCONFIG_FRAGMENTS_append_virtualmachine = " vbox-vmware-sata.cfg"
+
+# Extra configuration for using qemux86-64 image on physical hardware
+AGL_KCONFIG_FRAGMENTS_append_qemux86-64 = " \
+ x86-extra-graphic-devices.cfg \
+ x86-net-devices.cfg \
+ x86-security-tpm.cfg \
+ x86-usb-devices.cfg \
+ x86-upsquare.cfg \
+"