diff options
Diffstat (limited to 'plat/arm/board/a5ds/a5ds_pm.c')
| -rw-r--r-- | plat/arm/board/a5ds/a5ds_pm.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/plat/arm/board/a5ds/a5ds_pm.c b/plat/arm/board/a5ds/a5ds_pm.c index 5fd443b1..98de77d1 100644 --- a/plat/arm/board/a5ds/a5ds_pm.c +++ b/plat/arm/board/a5ds/a5ds_pm.c @@ -6,6 +6,38 @@ #include <lib/psci/psci.h> #include <plat/arm/common/plat_arm.h> +#include <plat/common/platform.h> +#include <drivers/arm/gicv2.h> + +/******************************************************************************* + * Platform handler called when a power domain is about to be turned on. The + * mpidr determines the CPU to be turned on. + ******************************************************************************/ +static int a5ds_pwr_domain_on(u_register_t mpidr) +{ + unsigned int pos = plat_core_pos_by_mpidr(mpidr); + uint64_t *hold_base = (uint64_t *)A5DS_HOLD_BASE; + + hold_base[pos] = A5DS_HOLD_STATE_GO; + dsbish(); + sev(); + + return PSCI_E_SUCCESS; +} + +/******************************************************************************* + * Platform handler called when a power domain has just been powered on after + * being turned off earlier. The target_state encodes the low power state that + * each level has woken up from. + ******************************************************************************/ +void a5ds_pwr_domain_on_finish(const psci_power_state_t *target_state) +{ + /* TODO: This setup is needed only after a cold boot*/ + gicv2_pcpu_distif_init(); + + /* Enable the gic cpu interface */ + gicv2_cpuif_enable(); +} /******************************************************************************* * Export the platform handlers via a5ds_psci_pm_ops. The ARM Standard @@ -14,11 +46,16 @@ plat_psci_ops_t a5ds_psci_pm_ops = { /* dummy struct */ .validate_ns_entrypoint = NULL, + .pwr_domain_on = a5ds_pwr_domain_on, + .pwr_domain_on_finish = a5ds_pwr_domain_on_finish }; int __init plat_setup_psci_ops(uintptr_t sec_entrypoint, const plat_psci_ops_t **psci_ops) { + uintptr_t *mailbox = (void *)A5DS_TRUSTED_MAILBOX_BASE; + *mailbox = sec_entrypoint; + *psci_ops = &a5ds_psci_pm_ops; return 0; |