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+# Helper/utility functions to work with the IMAGE_BOOT_FILES variable and its
+# expected behvaior with regards to the contents of the DEPLOY_DIR_IMAGE.
+#
+# The use of these functions assume that the deploy directory is populated with
+# any dependent files/etc. Such that the recipe using these functions depends
+# on the recipe that provides the files being used/queried.
+
+def boot_files_split_expand(d):
+ # IMAGE_BOOT_FILES has extra renaming info in the format '<source>;<target>'
+ for f in (d.getVar("IMAGE_BOOT_FILES") or "").split(" "):
+ parts = f.split(";", 1)
+ sources = [parts[0]]
+ if "*" in parts[0]:
+ # has glob part
+ import glob
+ deployroot = d.getVar("DEPLOY_DIR_IMAGE")
+ sources = []
+ for i in glob.glob(os.path.join(deployroot, parts[0])):
+ sources.append(os.path.basename(i))
+
+ # for all sources, yield an entry
+ for s in sources:
+ if len(parts) == 2:
+ yield s, parts[1]
+ yield s, s
+
+def boot_files_bitstream(d):
+ expectedfiles = [("bitstream", True)]
+ expectedexts = [(".bit", True), (".bin", False)]
+ # search for bitstream paths, use the renamed file. First matching is used
+ for source, target in boot_files_split_expand(d):
+ # skip boot.bin and u-boot.bin, it is not a bitstream
+ skip = ["boot.bin", "u-boot.bin"]
+ if source in skip or target in skip:
+ continue
+
+ for e, t in expectedfiles:
+ if source == e or target == e:
+ return target, t
+ for e, t in expectedexts:
+ if source.endswith(e) or target.endswith(e):
+ return target, t
+ return "", False
+
+def boot_files_dtb_filepath(d):
+ dtbs = (d.getVar("IMAGE_BOOT_FILES") or "").split(" ")
+ for source, target in boot_files_split_expand(d):
+ if target.endswith(".dtb"):
+ return target
+ return ""
+