From 56e0499971f52c9de3c75eb3e1f41566851a499e Mon Sep 17 00:00:00 2001 From: Dimitris Papastamos Date: Mon, 5 Jun 2017 13:36:34 +0100 Subject: [PATCH] aarch32: Implement cpu_rev_var_hs() Helper function to assist with errata workaround application. Change-Id: Idba42ca238442cc826f43444dbfa754e433a5e5e Signed-off-by: Dimitris Papastamos --- lib/cpus/aarch32/cpu_helpers.S | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/lib/cpus/aarch32/cpu_helpers.S b/lib/cpus/aarch32/cpu_helpers.S index dc78f6ee..bfdc1e4f 100644 --- a/lib/cpus/aarch32/cpu_helpers.S +++ b/lib/cpus/aarch32/cpu_helpers.S @@ -182,6 +182,19 @@ func cpu_rev_var_ls 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); -- 2.30.2