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| author | Dimitris Papastamos <dimitris.papastamos@arm.com> | 2017-06-05 13:36:34 +0100 |
|---|---|---|
| committer | Dimitris Papastamos <dimitris.papastamos@arm.com> | 2017-06-20 15:14:01 +0100 |
| commit | 56e0499971f52c9de3c75eb3e1f41566851a499e (patch) | |
| tree | bbf92e40b1180891b08f755b1998d88c9e7d6620 | |
| parent | 10d664ce965884b4abb2af7f07ffdc38643512dc (diff) | |
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>
| -rw-r--r-- | lib/cpus/aarch32/cpu_helpers.S | 13 |
1 files changed, 13 insertions, 0 deletions
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); |