diff options
| author | Soby Mathew <soby.mathew@arm.com> | 2016-09-09 11:33:58 +0100 |
|---|---|---|
| committer | Soby Mathew <soby.mathew@arm.com> | 2016-09-09 14:37:07 +0100 |
| commit | 7a3d4bdeefe361d8b88d0a62251df768a73684b3 (patch) | |
| tree | 80a816ad292587f2fb38e1015e8fa24861ded9fa | |
| parent | 99e89377ebdcf8b46ae5dcb5f940483760a8a03f (diff) | |
Flush `psci_plat_pm_ops` after initialization
The `psci_plat_pm_ops` global pointer is initialized during cold boot by the
primary CPU and will be accessed by the secondary CPUs before enabling data
cache during warm boot. This patch adds a missing data cache flush of
`psci_plat_psci_ops` after initialization during psci_setup() so that
secondaries can see the updated `psci_plat_psci_ops` pointer.
Fixes ARM-software/tf-issues#424
Change-Id: Id4554800b5646302b944115a33be69507d53cedb
| -rw-r--r-- | lib/psci/psci_setup.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/psci/psci_setup.c b/lib/psci/psci_setup.c index 20d06352..aa2ed510 100644 --- a/lib/psci/psci_setup.c +++ b/lib/psci/psci_setup.c @@ -238,6 +238,13 @@ int psci_setup(uintptr_t mailbox_ep) plat_setup_psci_ops(mailbox_ep, &psci_plat_pm_ops); assert(psci_plat_pm_ops); + /* + * Flush `psci_plat_pm_ops` as it will be accessed by secondary CPUs + * during warm boot before data cache is enabled. + */ + flush_dcache_range((uintptr_t)&psci_plat_pm_ops, + sizeof(psci_plat_pm_ops)); + /* Initialize the psci capability */ psci_caps = PSCI_GENERIC_CAP; |