+#define CAP_MIDR_RANGE(model, v_min, r_min, v_max, r_max) \
+ .matches = is_affected_midr_range, \
+ .midr_range = MIDR_RANGE(model, v_min, r_min, v_max, r_max)
+
+#define CAP_MIDR_ALL_VERSIONS(model) \
+ .matches = is_affected_midr_range, \
+ .midr_range = MIDR_ALL_VERSIONS(model)
+
+#define MIDR_FIXED(rev, revidr_mask) \
+ .fixed_revs = (struct arm64_midr_revidr[]){{ (rev), (revidr_mask) }, {}}
+
+#define ERRATA_MIDR_RANGE(model, v_min, r_min, v_max, r_max) \
+ .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, \
+ CAP_MIDR_RANGE(model, v_min, r_min, v_max, r_max)
+
+#define CAP_MIDR_RANGE_LIST(list) \
+ .matches = is_affected_midr_range_list, \
+ .midr_range_list = list
+
+/* Errata affecting a range of revisions of given model variant */
+#define ERRATA_MIDR_REV_RANGE(m, var, r_min, r_max) \
+ ERRATA_MIDR_RANGE(m, var, r_min, var, r_max)
+
+/* Errata affecting a single variant/revision of a model */
+#define ERRATA_MIDR_REV(model, var, rev) \
+ ERRATA_MIDR_RANGE(model, var, rev, var, rev)
+
+/* Errata affecting all variants/revisions of a given a model */
+#define ERRATA_MIDR_ALL_VERSIONS(model) \
+ .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, \
+ CAP_MIDR_ALL_VERSIONS(model)
+
+/* Errata affecting a list of midr ranges, with same work around */
+#define ERRATA_MIDR_RANGE_LIST(midr_list) \
+ .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, \
+ CAP_MIDR_RANGE_LIST(midr_list)
+
+/*
+ * Generic helper for handling capabilties with multiple (match,enable) pairs
+ * of call backs, sharing the same capability bit.
+ * Iterate over each entry to see if at least one matches.
+ */
+static bool __maybe_unused
+multi_entry_cap_matches(const struct arm64_cpu_capabilities *entry, int scope)
+{
+ const struct arm64_cpu_capabilities *caps;
+
+ for (caps = entry->match_list; caps->matches; caps++)
+ if (caps->matches(caps, scope))
+ return true;
+
+ return false;
+}
+
+/*
+ * Take appropriate action for all matching entries in the shared capability
+ * entry.
+ */
+static void __maybe_unused
+multi_entry_cap_cpu_enable(const struct arm64_cpu_capabilities *entry)
+{
+ const struct arm64_cpu_capabilities *caps;