aarch32: Implement cpu_rev_var_hs()
Helper function to assist with errata workaround application.
Change-Id: Idba42ca238442cc826f43444dbfa754e433a5e5e
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
diff --git a/lib/cpus/aarch32/cpu_helpers.S b/lib/cpus/aarch32/cpu_helpers.S
index dc78f6e..bfdc1e4 100644
--- a/lib/cpus/aarch32/cpu_helpers.S
+++ b/lib/cpus/aarch32/cpu_helpers.S
@@ -182,6 +182,19 @@
bx lr
endfunc cpu_rev_var_ls
+/*
+ * Compare the CPU's revision-variant (r0) with a given value (r1), for errata
+ * application purposes. If the revision-variant is higher than or same as a
+ * given value, indicates that errata applies; otherwise not.
+ */
+ .globl cpu_rev_var_hs
+func cpu_rev_var_hs
+ cmp r0, r1
+ movge r0, #ERRATA_APPLIES
+ movlt r0, #ERRATA_NOT_APPLIES
+ bx lr
+endfunc cpu_rev_var_hs
+
#if REPORT_ERRATA
/*
* void print_errata_status(void);