diff options
Diffstat (limited to 'plat/imx/common/imx8_psci.c')
| -rw-r--r-- | plat/imx/common/imx8_psci.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/plat/imx/common/imx8_psci.c b/plat/imx/common/imx8_psci.c new file mode 100644 index 0000000..91d3370 --- /dev/null +++ b/plat/imx/common/imx8_psci.c @@ -0,0 +1,62 @@ +/* + * 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 <plat_imx8.h> +#include <sci/sci.h> + +void __dead2 imx_system_off(void) +{ + sc_pm_set_sys_power_mode(ipc_handle, SC_PM_PW_MODE_OFF); + wfi(); + ERROR("power off failed.\n"); + panic(); +} + +void __dead2 imx_system_reset(void) +{ + sc_pm_reset(ipc_handle, SC_PM_RESET_TYPE_BOARD); + wfi(); + ERROR("system reset failed.\n"); + panic(); +} + +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_POWERDOWN) { + req_state->pwr_domain_state[MPIDR_AFFLVL0] = PLAT_MAX_OFF_STATE; + if (!state_id) + req_state->pwr_domain_state[MPIDR_AFFLVL1] = PLAT_MAX_RET_STATE; + else + req_state->pwr_domain_state[MPIDR_AFFLVL1] = PLAT_MAX_OFF_STATE; + } + + return PSCI_E_SUCCESS; +} + +void imx_get_sys_suspend_power_state(psci_power_state_t *req_state) +{ + unsigned int i; + + /* CPU & cluster off, system in retention */ + for (i = MPIDR_AFFLVL0; i < PLAT_MAX_PWR_LVL; i++) + req_state->pwr_domain_state[i] = PLAT_MAX_OFF_STATE; + req_state->pwr_domain_state[PLAT_MAX_PWR_LVL] = PLAT_MAX_RET_STATE; +} + |