| commit | a40d9559b2f104923dc01c74dcdd4ac06b85adef | [log] [tgz] |
|---|---|---|
| author | Harrison Mutai <harrison.mutai@arm.com> | Fri Dec 09 12:14:25 2022 +0000 |
| committer | Varun Wadekar <vwadekar@nvidia.com> | Fri Feb 03 17:28:02 2023 +0000 |
| tree | c38526e678dd628579161c98a443f0bde193a43e | |
| parent | b33ea1e3e91430d03d4328f1c7c094af7622ff2d [diff] [blame] |
fix(cpus): workaround for Cortex-A510 erratum 2684597 Cortex-A510 erratum 2684597 is a Cat B erratum that applies to revisions r0p0, r0p1, r0p2, r0p3, r1p0, r1p1 and r1p2. It is fixed in r1p3. The workaround is to execute a TSB CSYNC and DSB before executing WFI for power down. SDEN can be found here: https://developer.arm.com/documentation/SDEN1873361/latest https://developer.arm.com/documentation/SDEN1873351/latest Change-Id: Ic0b24b600bc013eb59c797401fbdc9bda8058d6d Signed-off-by: Harrison Mutai <harrison.mutai@arm.com> (cherry picked from commit aea4ccf8d9f3eabbc931f0e82df65ffca28c25e5)
diff --git a/lib/psci/aarch64/psci_helpers.S b/lib/psci/aarch64/psci_helpers.S index add968a..a557d49 100644 --- a/lib/psci/aarch64/psci_helpers.S +++ b/lib/psci/aarch64/psci_helpers.S
@@ -124,6 +124,9 @@ * ----------------------------------------------------------------------- */ func psci_power_down_wfi +#if ERRATA_A510_2684597 + bl apply_cpu_pwr_dwn_errata +#endif dsb sy // ensure write buffer empty wfi no_ret plat_panic_handler