diff options
| -rw-r--r-- | plat/ti/k3/common/k3_psci.c | 95 | ||||
| -rw-r--r-- | plat/ti/k3/common/plat_common.mk | 5 |
2 files changed, 100 insertions, 0 deletions
diff --git a/plat/ti/k3/common/k3_psci.c b/plat/ti/k3/common/k3_psci.c new file mode 100644 index 000000000..91602c8c1 --- /dev/null +++ b/plat/ti/k3/common/k3_psci.c @@ -0,0 +1,95 @@ +/* + * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <arch_helpers.h> +#include <assert.h> +#include <debug.h> +#include <k3_gicv3.h> +#include <psci.h> +#include <stdbool.h> + +#define STUB() ERROR("stub %s called\n", __func__) + +uintptr_t k3_sec_entrypoint; + +static void k3_cpu_standby(plat_local_state_t cpu_state) +{ + /* + * Enter standby state + * dsb is good practice before using wfi to enter low power states + */ + dsb(); + wfi(); +} + +static int k3_pwr_domain_on(u_register_t mpidr) +{ + sev(); + + /* TODO: Indicate to System firmware about powering up */ + + return PSCI_E_SUCCESS; +} + +void k3_pwr_domain_off(const psci_power_state_t *target_state) +{ + /* Prevent interrupts from spuriously waking up this cpu */ + k3_gic_cpuif_disable(); + + /* TODO: Indicate to System firmware about powering down */ +} + +void k3_pwr_domain_on_finish(const psci_power_state_t *target_state) +{ + /* TODO: Indicate to System firmware about completion */ + + k3_gic_pcpu_init(); + k3_gic_cpuif_enable(); +} + +static void __dead2 k3_system_reset(void) +{ + /* TODO: Indicate to System firmware about system reset */ + STUB(); + + while (true) + wfi(); +} + +static int k3_validate_power_state(unsigned int power_state, + psci_power_state_t *req_state) +{ + /* TODO: perform the proper validation */ + + return PSCI_E_SUCCESS; +} + +static int k3_validate_ns_entrypoint(uintptr_t entrypoint) +{ + /* TODO: perform the proper validation */ + + return PSCI_E_SUCCESS; +} + +static const plat_psci_ops_t k3_plat_psci_ops = { + .cpu_standby = k3_cpu_standby, + .pwr_domain_on = k3_pwr_domain_on, + .pwr_domain_off = k3_pwr_domain_off, + .pwr_domain_on_finish = k3_pwr_domain_on_finish, + .system_reset = k3_system_reset, + .validate_power_state = k3_validate_power_state, + .validate_ns_entrypoint = k3_validate_ns_entrypoint +}; + +int plat_setup_psci_ops(uintptr_t sec_entrypoint, + const plat_psci_ops_t **psci_ops) +{ + k3_sec_entrypoint = sec_entrypoint; + + *psci_ops = &k3_plat_psci_ops; + + return 0; +} diff --git a/plat/ti/k3/common/plat_common.mk b/plat/ti/k3/common/plat_common.mk index 0c153f746..bf2a73fbb 100644 --- a/plat/ti/k3/common/plat_common.mk +++ b/plat/ti/k3/common/plat_common.mk @@ -49,6 +49,10 @@ K3_GIC_SOURCES += \ plat/common/plat_gicv3.c \ ${PLAT_PATH}/common/k3_gicv3.c \ +K3_PSCI_SOURCES += \ + plat/common/plat_psci_common.c \ + ${PLAT_PATH}/common/k3_psci.c \ + PLAT_BL_COMMON_SOURCES += \ plat/arm/common/arm_common.c \ lib/cpus/aarch64/cortex_a53.S \ @@ -60,3 +64,4 @@ BL31_SOURCES += \ ${PLAT_PATH}/common/k3_helpers.S \ ${PLAT_PATH}/common/k3_topology.c \ ${K3_GIC_SOURCES} \ + ${K3_PSCI_SOURCES} \ |