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# Recipe to create a minimal Arm Autonomy stack host image
DESCRIPTION = "Arm Autonomy stack host minimal image"
inherit core-image
LICENSE = "MIT"
LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
# The ARM_AUTONOMY_HOST_IMAGE_EXTERN_GUESTS variable can be used to include in the
# image one or several xenguest images.
# The list must be space separated and each entry must have the following
# format: URL[;guestname=NAME]
# - URL can be the full path to a file or a Yocto compatible SRC_URI url
# - guestname=NAME can be used to specify the name of the guest. If not
# specified the basename of the file (without .xenguest extension) is used.
# Here are examples of values:
# /home/mydir/myguest.xenguest;guestname=guest1
# http://www.url.com/testguest.xenguest
#
# If you are using the output of an other Yocto project, you should use the
# full path syntax instead of the Yocto SRC_URI to be able to use the
# symlink version of your image (as the real file has a new name on each
# build as it includes the date). You must not use SRC_URI type file:// as
# it will try to include the symlink and not the destination file which will
# be detected by the recipe and output an error 'Guest file is a symlink'.
#
# Guests can also be added using a bbapend to this recipe by adding entries
# to SRC_URI with parameter ;guestname=NAME to specify the destination
# guestname. The parameter guestname must be present as it is used to detect
# guests to be added
ARM_AUTONOMY_HOST_IMAGE_EXTERN_GUESTS ??= ""
# Includes minimal set required to start and manage guest. The xen specific
# modules are not explicitly included as they are built as part of the kernel
# image for performance reasons. It doesn't include all kernel modules to
# reduce the image size. If the kernel-modules packages are needed they can
# be appended to IMAGE_INSTALL in a bbappend.
IMAGE_INSTALL += " \
packagegroup-core-boot \
packagegroup-core-ssh-openssh \
qemu-xen \
xenguest-manager \
xenguest-network-bridge \
"
# Build xen binary
EXTRA_IMAGEDEPENDS += "xen"
# Build xen-devicetree to produce a xen ready devicetree
EXTRA_IMAGEDEPENDS += "xen-devicetree"
python __anonymous() {
if bb.utils.contains('DISTRO_FEATURES', 'arm-autonomy-host', False, True, d):
raise bb.parse.SkipRecipe("DISTRO_FEATURES does not contain 'arm-autonomy-host'")
if bb.utils.contains('DISTRO_FEATURES', 'xen', False, True, d):
raise bb.parse.SkipRecipe("DISTRO_FEATURES does not contain 'xen'")
# Check in ARM_AUTONOMY_HOST_IMAGE_EXTERN_GUESTS for extra guests and add them
# to SRC_URI with xenguest parameter if not set
guestlist = d.getVar('ARM_AUTONOMY_HOST_IMAGE_EXTERN_GUESTS')
if guestlist:
for guest in guestlist.split():
# If the user just specified a file instead of file://FILE, add
# the file:// prefix
if guest.startswith('/'):
guestfile = ''
guestname = ''
if ';guestname=' in guest:
# user specified a guestname
guestname = guest.split(';guestname=')[1]
guestfile = guest.split(';guestname=')[0]
else:
# no guestname so use the basename
guestname = os.path.basename(guest)
guestfile = guest
# in case we have a link we need the destination
guestfile = os.path.realpath(guestfile)
# make sure the file exist to give a meaningfull error
if not os.path.exists(guestfile):
raise bb.parse.SkipRecipe("ARM_AUTONOMY_HOST_IMAGE_EXTERN_GUESTS entry does not exist: " + guest)
# In case the file is a symlink make sure we use the destination
d.appendVar('SRC_URI', ' file://' + guestfile + ';guestname=' + guestname)
else:
# we have a Yocto URL
try:
_, _, path, _, _, parm = bb.fetch.decodeurl(guest)
# force guestname param in if not already there
if not 'guestname' in parm:
guest += ';guestname=' + os.path.basename(path)
d.appendVar('SRC_URI', ' ' + guest)
except:
raise bb.parse.SkipRecipe("ARM_AUTONOMY_HOST_IMAGE_EXTERN_GUESTS contains an invalid entry: " + guest)
}
python add_extern_guests () {
# Destination directory on the rootfs
guestdir = d.getVar('IMAGE_ROOTFS') + d.getVar('datadir') + '/guests'
# Parse SRC_URI for files with ;guestname= parameter
src_uri = d.getVar('SRC_URI')
for entry in src_uri.split():
_, _, path, _, _, parm = bb.fetch.decodeurl(entry)
if 'guestname' in parm:
if os.path.islink(path):
bb.fatal("Guest file is a symlink: " + path)
bb.utils.mkdirhier(guestdir)
dstname = parm['guestname']
# Add file extension if not there
if not dstname.endswith('.xenguest'):
dstname += '.xenguest'
if not bb.utils.copyfile(path, guestdir + '/' + dstname):
bb.fatal("Fail to copy Guest file " + path)
}
IMAGE_PREPROCESS_COMMAND += "add_extern_guests; "
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