diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:13:47 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:13:47 +0000 |
commit | 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 (patch) | |
tree | bcf648efac40ca6139842707f0eba5a4496a6dd2 /plat/imx/imx8m/imx8mq/imx8mq_psci.c | |
parent | Initial commit. (diff) | |
download | arm-trusted-firmware-upstream.tar.xz arm-trusted-firmware-upstream.zip |
Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plat/imx/imx8m/imx8mq/imx8mq_psci.c')
-rw-r--r-- | plat/imx/imx8m/imx8mq/imx8mq_psci.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/plat/imx/imx8m/imx8mq/imx8mq_psci.c b/plat/imx/imx8m/imx8mq/imx8mq_psci.c new file mode 100644 index 0000000..662017d --- /dev/null +++ b/plat/imx/imx8m/imx8mq/imx8mq_psci.c @@ -0,0 +1,133 @@ +/* + * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <stdbool.h> + +#include <arch.h> +#include <arch_helpers.h> +#include <common/debug.h> +#include <lib/mmio.h> +#include <lib/psci/psci.h> + +#include <gpc.h> +#include <imx8m_psci.h> +#include <plat_imx8.h> + +int imx_validate_power_state(unsigned int power_state, + psci_power_state_t *req_state) +{ + int pwr_lvl = psci_get_pstate_pwrlvl(power_state); + int pwr_type = psci_get_pstate_type(power_state); + int state_id = psci_get_pstate_id(power_state); + + if (pwr_lvl > PLAT_MAX_PWR_LVL) + return PSCI_E_INVALID_PARAMS; + + if (pwr_type == PSTATE_TYPE_STANDBY) { + CORE_PWR_STATE(req_state) = PLAT_MAX_RET_STATE; + CLUSTER_PWR_STATE(req_state) = PLAT_MAX_RET_STATE; + } + + if (pwr_type == PSTATE_TYPE_POWERDOWN && state_id == 0x33) { + CORE_PWR_STATE(req_state) = PLAT_MAX_OFF_STATE; + CLUSTER_PWR_STATE(req_state) = PLAT_MAX_RET_STATE; + } + + return PSCI_E_SUCCESS; +} + +void imx_domain_suspend(const psci_power_state_t *target_state) +{ + uint64_t base_addr = BL31_BASE; + uint64_t mpidr = read_mpidr_el1(); + unsigned int core_id = MPIDR_AFFLVL0_VAL(mpidr); + + if (is_local_state_off(CORE_PWR_STATE(target_state))) { + /* disable the cpu interface */ + plat_gic_cpuif_disable(); + imx_set_cpu_secure_entry(core_id, base_addr); + imx_set_cpu_lpm(core_id, true); + } else { + dsb(); + write_scr_el3(read_scr_el3() | SCR_FIQ_BIT); + isb(); + } + + if (is_local_state_off(CLUSTER_PWR_STATE(target_state))) + imx_set_cluster_powerdown(core_id, true); + else + imx_set_cluster_standby(true); + + if (is_local_state_retn(SYSTEM_PWR_STATE(target_state))) { + imx_set_sys_lpm(core_id, true); + } +} + +void imx_domain_suspend_finish(const psci_power_state_t *target_state) +{ + uint64_t mpidr = read_mpidr_el1(); + unsigned int core_id = MPIDR_AFFLVL0_VAL(mpidr); + + /* check the system level status */ + if (is_local_state_retn(SYSTEM_PWR_STATE(target_state))) { + imx_set_sys_lpm(core_id, false); + imx_clear_rbc_count(); + } + + /* check the cluster level power status */ + if (is_local_state_off(CLUSTER_PWR_STATE(target_state))) + imx_set_cluster_powerdown(core_id, false); + else + imx_set_cluster_standby(false); + + /* check the core level power status */ + if (is_local_state_off(CORE_PWR_STATE(target_state))) { + /* clear the core lpm setting */ + imx_set_cpu_lpm(core_id, false); + /* enable the gic cpu interface */ + plat_gic_cpuif_enable(); + } else { + write_scr_el3(read_scr_el3() & (~0x4)); + isb(); + } +} + +void imx_get_sys_suspend_power_state(psci_power_state_t *req_state) +{ + unsigned int i; + + for (i = IMX_PWR_LVL0; i < PLAT_MAX_PWR_LVL; i++) + req_state->pwr_domain_state[i] = PLAT_STOP_OFF_STATE; + + req_state->pwr_domain_state[PLAT_MAX_PWR_LVL] = PLAT_MAX_RET_STATE; +} + +static const plat_psci_ops_t imx_plat_psci_ops = { + .pwr_domain_on = imx_pwr_domain_on, + .pwr_domain_on_finish = imx_pwr_domain_on_finish, + .pwr_domain_off = imx_pwr_domain_off, + .validate_ns_entrypoint = imx_validate_ns_entrypoint, + .validate_power_state = imx_validate_power_state, + .cpu_standby = imx_cpu_standby, + .pwr_domain_suspend = imx_domain_suspend, + .pwr_domain_suspend_finish = imx_domain_suspend_finish, + .pwr_domain_pwr_down_wfi = imx_pwr_domain_pwr_down_wfi, + .get_sys_suspend_power_state = imx_get_sys_suspend_power_state, + .system_reset = imx_system_reset, + .system_reset2 = imx_system_reset2, + .system_off = imx_system_off, +}; + +/* export the platform specific psci ops */ +int plat_setup_psci_ops(uintptr_t sec_entrypoint, + const plat_psci_ops_t **psci_ops) +{ + imx_mailbox_init(sec_entrypoint); + /* sec_entrypoint is used for warm reset */ + *psci_ops = &imx_plat_psci_ops; + + return 0; +} |