mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-08-21 06:21:09 +02:00
762688bff2
Add domain suspend/resume support, Linux kernel can "echo mem > /sys/power/state" to put system into suspend mode, all CPUs and cluster will be powered off and can be waked up if irq pending in GIC, tested on i.MX8QX MEK board. Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
47 lines
995 B
C
47 lines
995 B
C
/*
|
|
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#include <arch.h>
|
|
#include <arch_helpers.h>
|
|
#include <debug.h>
|
|
#include <plat_imx8.h>
|
|
#include <sci/sci.h>
|
|
#include <stdbool.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)
|
|
{
|
|
/* TODO */
|
|
return PSCI_E_INVALID_PARAMS;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|