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/*
* Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <errno.h>
#include <platform_def.h>
#include <arch_helpers.h>
#include <common/debug.h>
#include <drivers/console.h>
#include <drivers/delay_timer.h>
#include <lib/psci/psci.h>
#include <plat_private.h>
/* Macros to read the rk power domain state */
#define RK_CORE_PWR_STATE(state) \
((state)->pwr_domain_state[MPIDR_AFFLVL0])
#define RK_CLUSTER_PWR_STATE(state) \
((state)->pwr_domain_state[MPIDR_AFFLVL1])
#define RK_SYSTEM_PWR_STATE(state) \
((state)->pwr_domain_state[PLAT_MAX_PWR_LVL])
static uintptr_t rockchip_sec_entrypoint;
#pragma weak rockchip_soc_cores_pwr_dm_on
#pragma weak rockchip_soc_hlvl_pwr_dm_off
#pragma weak rockchip_soc_cores_pwr_dm_off
#pragma weak rockchip_soc_sys_pwr_dm_suspend
#pragma weak rockchip_soc_cores_pwr_dm_suspend
#pragma weak rockchip_soc_hlvl_pwr_dm_suspend
#pragma weak rockchip_soc_hlvl_pwr_dm_on_finish
#pragma weak rockchip_soc_cores_pwr_dm_on_finish
#pragma weak rockchip_soc_sys_pwr_dm_resume
#pragma weak rockchip_soc_hlvl_pwr_dm_resume
#pragma weak rockchip_soc_cores_pwr_dm_resume
#pragma weak rockchip_soc_soft_reset
#pragma weak rockchip_soc_system_off
#pragma weak rockchip_soc_sys_pd_pwr_dn_wfi
#pragma weak rockchip_soc_cores_pd_pwr_dn_wfi
int rockchip_soc_cores_pwr_dm_on(unsigned long mpidr, uint64_t entrypoint)
{
return PSCI_E_NOT_SUPPORTED;
}
int rockchip_soc_hlvl_pwr_dm_off(uint32_t lvl,
plat_local_state_t lvl_state)
{
return PSCI_E_NOT_SUPPORTED;
}
int rockchip_soc_cores_pwr_dm_off(void)
{
return PSCI_E_NOT_SUPPORTED;
}
int rockchip_soc_sys_pwr_dm_suspend(void)
{
return PSCI_E_NOT_SUPPORTED;
}
int rockchip_soc_cores_pwr_dm_suspend(void)
{
return PSCI_E_NOT_SUPPORTED;
}
int rockchip_soc_hlvl_pwr_dm_suspend(uint32_t lvl,
plat_local_state_t lvl_state)
{
return PSCI_E_NOT_SUPPORTED;
}
int rockchip_soc_hlvl_pwr_dm_on_finish(uint32_t lvl,
plat_local_state_t lvl_state)
{
return PSCI_E_NOT_SUPPORTED;
}
int rockchip_soc_cores_pwr_dm_on_finish(void)
{
return PSCI_E_NOT_SUPPORTED;
}
int rockchip_soc_sys_pwr_dm_resume(void)
{
return PSCI_E_NOT_SUPPORTED;
}
int rockchip_soc_hlvl_pwr_dm_resume(uint32_t lvl,
plat_local_state_t lvl_state)
{
return PSCI_E_NOT_SUPPORTED;
}
int rockchip_soc_cores_pwr_dm_resume(void)
{
return PSCI_E_NOT_SUPPORTED;
}
void __dead2 rockchip_soc_soft_reset(void)
{
while (1)
;
}
void __dead2 rockchip_soc_system_off(void)
{
while (1)
;
}
void __dead2 rockchip_soc_cores_pd_pwr_dn_wfi(
const psci_power_state_t *target_state)
{
psci_power_down_wfi();
}
void __dead2 rockchip_soc_sys_pd_pwr_dn_wfi(void)
{
psci_power_down_wfi();
}
/*******************************************************************************
* Rockchip standard platform handler called to check the validity of the power
* state parameter.
******************************************************************************/
int rockchip_validate_power_state(unsigned int power_state,
psci_power_state_t *req_state)
{
int pstate = psci_get_pstate_type(power_state);
int pwr_lvl = psci_get_pstate_pwrlvl(power_state);
int i;
assert(req_state);
if (pwr_lvl > PLAT_MAX_PWR_LVL)
return PSCI_E_INVALID_PARAMS;
/* Sanity check the requested state */
if (pstate == PSTATE_TYPE_STANDBY) {
/*
* It's probably to enter standby only on power level 0
* ignore any other power level.
*/
if (pwr_lvl != MPIDR_AFFLVL0)
return PSCI_E_INVALID_PARAMS;
req_state->pwr_domain_state[MPIDR_AFFLVL0] =
PLAT_MAX_RET_STATE;
} else {
for (i = MPIDR_AFFLVL0; i <= pwr_lvl; i++)
req_state->pwr_domain_state[i] =
PLAT_MAX_OFF_STATE;
for (i = (pwr_lvl + 1); i <= PLAT_MAX_PWR_LVL; i++)
req_state->pwr_domain_state[i] =
PLAT_MAX_RET_STATE;
}
/* We expect the 'state id' to be zero */
if (psci_get_pstate_id(power_state))
return PSCI_E_INVALID_PARAMS;
return PSCI_E_SUCCESS;
}
void rockchip_get_sys_suspend_power_state(psci_power_state_t *req_state)
{
int i;
for (i = MPIDR_AFFLVL0; i <= PLAT_MAX_PWR_LVL; i++)
req_state->pwr_domain_state[i] = PLAT_MAX_OFF_STATE;
}
/*******************************************************************************
* RockChip handler called when a CPU is about to enter standby.
******************************************************************************/
void rockchip_cpu_standby(plat_local_state_t cpu_state)
{
unsigned int scr;
assert(cpu_state == PLAT_MAX_RET_STATE);
scr = read_scr_el3();
/* Enable PhysicalIRQ bit for NS world to wake the CPU */
write_scr_el3(scr | SCR_IRQ_BIT);
isb();
dsb();
wfi();
/*
* Restore SCR to the original value, synchronisation of scr_el3 is
* done by eret while el3_exit to save some execution cycles.
*/
write_scr_el3(scr);
}
/*******************************************************************************
* RockChip handler called when a power domain is about to be turned on. The
* mpidr determines the CPU to be turned on.
******************************************************************************/
int rockchip_pwr_domain_on(u_register_t mpidr)
{
return rockchip_soc_cores_pwr_dm_on(mpidr, rockchip_sec_entrypoint);
}
/*******************************************************************************
* RockChip handler called when a power domain is about to be turned off. The
* target_state encodes the power state that each level should transition to.
******************************************************************************/
void rockchip_pwr_domain_off(const psci_power_state_t *target_state)
{
uint32_t lvl;
plat_local_state_t lvl_state;
int ret;
assert(RK_CORE_PWR_STATE(target_state) == PLAT_MAX_OFF_STATE);
plat_rockchip_gic_cpuif_disable();
if (RK_CLUSTER_PWR_STATE(target_state) == PLAT_MAX_OFF_STATE)
plat_cci_disable();
rockchip_soc_cores_pwr_dm_off();
for (lvl = MPIDR_AFFLVL1; lvl <= PLAT_MAX_PWR_LVL; lvl++) {
lvl_state = target_state->pwr_domain_state[lvl];
ret = rockchip_soc_hlvl_pwr_dm_off(lvl, lvl_state);
if (ret == PSCI_E_NOT_SUPPORTED)
break;
}
}
/*******************************************************************************
* RockChip handler called when a power domain is about to be suspended. The
* target_state encodes the power state that each level should transition to.
******************************************************************************/
void rockchip_pwr_domain_suspend(const psci_power_state_t *target_state)
{
uint32_t lvl;
plat_local_state_t lvl_state;
int ret;
if (RK_CORE_PWR_STATE(target_state) != PLAT_MAX_OFF_STATE)
return;
/* Prevent interrupts from spuriously waking up this cpu */
plat_rockchip_gic_cpuif_disable();
if (RK_SYSTEM_PWR_STATE(target_state) == PLAT_MAX_OFF_STATE)
rockchip_soc_sys_pwr_dm_suspend();
else
rockchip_soc_cores_pwr_dm_suspend();
/* Perform the common cluster specific operations */
if (RK_CLUSTER_PWR_STATE(target_state) == PLAT_MAX_OFF_STATE)
plat_cci_disable();
if (RK_SYSTEM_PWR_STATE(target_state) == PLAT_MAX_OFF_STATE)
return;
for (lvl = MPIDR_AFFLVL1; lvl <= PLAT_MAX_PWR_LVL; lvl++) {
lvl_state = target_state->pwr_domain_state[lvl];
ret = rockchip_soc_hlvl_pwr_dm_suspend(lvl, lvl_state);
if (ret == PSCI_E_NOT_SUPPORTED)
break;
}
}
/*******************************************************************************
* RockChip 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 rockchip_pwr_domain_on_finish(const psci_power_state_t *target_state)
{
uint32_t lvl;
plat_local_state_t lvl_state;
int ret;
assert(RK_CORE_PWR_STATE(target_state) == PLAT_MAX_OFF_STATE);
for (lvl = MPIDR_AFFLVL1; lvl <= PLAT_MAX_PWR_LVL; lvl++) {
lvl_state = target_state->pwr_domain_state[lvl];
ret = rockchip_soc_hlvl_pwr_dm_on_finish(lvl, lvl_state);
if (ret == PSCI_E_NOT_SUPPORTED)
break;
}
rockchip_soc_cores_pwr_dm_on_finish();
/* Perform the common cluster specific operations */
if (RK_CLUSTER_PWR_STATE(target_state) == PLAT_MAX_OFF_STATE) {
/* Enable coherency if this cluster was off */
plat_cci_enable();
}
/* Enable the gic cpu interface */
plat_rockchip_gic_pcpu_init();
/* Program the gic per-cpu distributor or re-distributor interface */
plat_rockchip_gic_cpuif_enable();
}
/*******************************************************************************
* RockChip handler called when a power domain has just been powered on after
* having been suspended earlier. The target_state encodes the low power state
* that each level has woken up from.
* TODO: At the moment we reuse the on finisher and reinitialize the secure
* context. Need to implement a separate suspend finisher.
******************************************************************************/
void rockchip_pwr_domain_suspend_finish(const psci_power_state_t *target_state)
{
uint32_t lvl;
plat_local_state_t lvl_state;
int ret;
/* Nothing to be done on waking up from retention from CPU level */
if (RK_CORE_PWR_STATE(target_state) != PLAT_MAX_OFF_STATE)
return;
if (RK_SYSTEM_PWR_STATE(target_state) == PLAT_MAX_OFF_STATE) {
rockchip_soc_sys_pwr_dm_resume();
goto comm_finish;
}
for (lvl = MPIDR_AFFLVL1; lvl <= PLAT_MAX_PWR_LVL; lvl++) {
lvl_state = target_state->pwr_domain_state[lvl];
ret = rockchip_soc_hlvl_pwr_dm_resume(lvl, lvl_state);
if (ret == PSCI_E_NOT_SUPPORTED)
break;
}
rockchip_soc_cores_pwr_dm_resume();
/*
* Program the gic per-cpu distributor or re-distributor interface.
* For sys power domain operation, resuming of the gic needs to operate
* in rockchip_soc_sys_pwr_dm_resume(), according to the sys power mode
* implements.
*/
plat_rockchip_gic_cpuif_enable();
comm_finish:
/* Perform the common cluster specific operations */
if (RK_CLUSTER_PWR_STATE(target_state) == PLAT_MAX_OFF_STATE) {
/* Enable coherency if this cluster was off */
plat_cci_enable();
}
}
/*******************************************************************************
* RockChip handlers to reboot the system
******************************************************************************/
static void __dead2 rockchip_system_reset(void)
{
rockchip_soc_soft_reset();
}
/*******************************************************************************
* RockChip handlers to power off the system
******************************************************************************/
static void __dead2 rockchip_system_poweroff(void)
{
rockchip_soc_system_off();
}
static void __dead2 rockchip_pd_pwr_down_wfi(
const psci_power_state_t *target_state)
{
if (RK_SYSTEM_PWR_STATE(target_state) == PLAT_MAX_OFF_STATE)
rockchip_soc_sys_pd_pwr_dn_wfi();
else
rockchip_soc_cores_pd_pwr_dn_wfi(target_state);
}
/*******************************************************************************
* Export the platform handlers via plat_rockchip_psci_pm_ops. The rockchip
* standard
* platform layer will take care of registering the handlers with PSCI.
******************************************************************************/
const plat_psci_ops_t plat_rockchip_psci_pm_ops = {
.cpu_standby = rockchip_cpu_standby,
.pwr_domain_on = rockchip_pwr_domain_on,
.pwr_domain_off = rockchip_pwr_domain_off,
.pwr_domain_suspend = rockchip_pwr_domain_suspend,
.pwr_domain_on_finish = rockchip_pwr_domain_on_finish,
.pwr_domain_suspend_finish = rockchip_pwr_domain_suspend_finish,
.pwr_domain_pwr_down_wfi = rockchip_pd_pwr_down_wfi,
.system_reset = rockchip_system_reset,
.system_off = rockchip_system_poweroff,
.validate_power_state = rockchip_validate_power_state,
.get_sys_suspend_power_state = rockchip_get_sys_suspend_power_state
};
int plat_setup_psci_ops(uintptr_t sec_entrypoint,
const plat_psci_ops_t **psci_ops)
{
*psci_ops = &plat_rockchip_psci_pm_ops;
rockchip_sec_entrypoint = sec_entrypoint;
return 0;
}
uintptr_t plat_get_sec_entrypoint(void)
{
assert(rockchip_sec_entrypoint);
return rockchip_sec_entrypoint;
}