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diff --git a/meta/conf/machine/include/microblaze/feature-microblaze-versions.inc b/meta/conf/machine/include/microblaze/feature-microblaze-versions.inc
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+# MicroBlaze versions are defined as features, the features are setup to
+# conflict with other versions as well as unavailable features for particular
+# versions.
+#
+# Versions before v9.0 of MicroBlaze use a versioning scheme of "vX.YY.Z"
+# (where Z = [abc]). For v8.* versions of MicroBlaze the revision (Z) changes
+# did not affect ABI and are ignored by this tune configuration. Though this
+# format is expected by GCC including the revision, but this is defaulted to
+# ".a".
+#
+# Since v9.0 of MicroBlaze the revision (Z) part of versions was entirely
+# dropped and the version scheme was changed to "vX.Y".
+
+def microblaze_current_version(d, gcc = False):
+ import re
+ # find the current version, and convert it to major/minor integers
+ version = None
+ for t in (d.getVar("TUNE_FEATURES") or "").split():
+ m = re.search("^v(\d+)\.(\d+)", t)
+ if m:
+ version = int(m.group(1)), int(m.group(2))
+ break
+
+ # format the version string in generic or GCC specific formats
+ if version:
+ if version[0] <= 8:
+ return ("v%d.%02d" % version[0:2]) + (".a" if gcc else "")
+ else:
+ return "v%d.%d" % version[0:2]
+ return ""
+
+# MicroBlaze versions
+TUNEVALID[v8.00] = "MicroBlaze version 8.00"
+TUNEVALID[v8.10] = "MicroBlaze version 8.10"
+TUNEVALID[v8.20] = "MicroBlaze version 8.20"
+TUNEVALID[v8.30] = "MicroBlaze version 8.30"
+TUNEVALID[v8.40] = "MicroBlaze version 8.40"
+TUNEVALID[v8.50] = "MicroBlaze version 8.50"
+TUNEVALID[v9.0] = "MicroBlaze version 9.0"
+TUNEVALID[v9.1] = "MicroBlaze version 9.1"
+TUNEVALID[v9.2] = "MicroBlaze version 9.2"
+TUNEVALID[v9.3] = "MicroBlaze version 9.3"
+TUNEVALID[v9.4] = "MicroBlaze version 9.4"
+TUNEVALID[v9.5] = "MicroBlaze version 9.5"
+TUNEVALID[v9.6] = "MicroBlaze version 9.6"
+TUNEVALID[v10.0] = "MicroBlaze version 10.0"
+
+# Version conflict matrix
+TUNECONFLICTS[v8.00] = ""
+TUNECONFLICTS[v8.10] = "v8.00"
+TUNECONFLICTS[v8.20] = "v8.00 v8.10"
+TUNECONFLICTS[v8.30] = "v8.00 v8.10 v8.20"
+TUNECONFLICTS[v8.40] = "v8.00 v8.10 v8.20 v8.30"
+TUNECONFLICTS[v8.50] = "v8.00 v8.10 v8.20 v8.30 v8.40"
+TUNECONFLICTS[v9.0] = "v8.00 v8.10 v8.20 v8.30 v8.40 v8.50"
+TUNECONFLICTS[v9.1] = "v8.00 v8.10 v8.20 v8.30 v8.40 v8.50 v9.0"
+TUNECONFLICTS[v9.2] = "v8.00 v8.10 v8.20 v8.30 v8.40 v8.50 v9.0 v9.1"
+TUNECONFLICTS[v9.3] = "v8.00 v8.10 v8.20 v8.30 v8.40 v8.50 v9.0 v9.1 v9.2"
+TUNECONFLICTS[v9.4] = "v8.00 v8.10 v8.20 v8.30 v8.40 v8.50 v9.0 v9.1 v9.2 v9.3"
+TUNECONFLICTS[v9.5] = "v8.00 v8.10 v8.20 v8.30 v8.40 v8.50 v9.0 v9.1 v9.2 v9.3 v9.4"
+TUNECONFLICTS[v9.6] = "v8.00 v8.10 v8.20 v8.30 v8.40 v8.50 v9.0 v9.1 v9.2 v9.3 v9.4 v9.5"
+TUNECONFLICTS[v10.0] = "v8.00 v8.10 v8.20 v8.30 v8.40 v8.50 v9.0 v9.1 v9.2 v9.3 v9.4 v9.5 v9.6"
+
+# Version flags
+TUNE_CCARGS += "-mcpu=${@microblaze_current_version(d, True)}"
+MBPKGARCH_VERSION = "-${@microblaze_current_version(d)}"
+