diff options
Diffstat (limited to 'services/std_svc/psci/psci_entry.S')
-rw-r--r-- | services/std_svc/psci/psci_entry.S | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/services/std_svc/psci/psci_entry.S b/services/std_svc/psci/psci_entry.S index 192b638c1e..e9ad1305b8 100644 --- a/services/std_svc/psci/psci_entry.S +++ b/services/std_svc/psci/psci_entry.S @@ -54,6 +54,25 @@ psci_aff_suspend_finish_entry: adr x23, psci_afflvl_suspend_finishers psci_aff_common_finish_entry: +#if !RESET_TO_BL31 + /* --------------------------------------------- + * Enable the instruction cache, stack pointer + * and data access alignment checks. Also, set + * the EL3 exception endianess to little-endian. + * It can be assumed that BL3-1 entrypoint code + * will do this when RESET_TO_BL31 is set. The + * same assumption cannot be made when another + * boot loader executes before BL3-1 in the warm + * boot path e.g. BL1. + * --------------------------------------------- + */ + mov x1, #(SCTLR_I_BIT | SCTLR_A_BIT | SCTLR_SA_BIT) + mrs x0, sctlr_el3 + orr x0, x0, x1 + msr sctlr_el3, x0 + isb +#endif + /* --------------------------------------------- * Initialise the pcpu cache pointer for the CPU * --------------------------------------------- |