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/*
* Copyright (c) 2015-2018, 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 <drivers/arm/cci.h>
#include <drivers/arm/gicv3.h>
#include <lib/mmio.h>
#include <lib/psci/psci.h>
#include <plat_imx8.h>
#include <sci/sci.h>
#include "../../common/sci/imx8_mu.h"
#define CORE_PWR_STATE(state) \
((state)->pwr_domain_state[MPIDR_AFFLVL0])
#define CLUSTER_PWR_STATE(state) \
((state)->pwr_domain_state[MPIDR_AFFLVL1])
#define SYSTEM_PWR_STATE(state) \
((state)->pwr_domain_state[PLAT_MAX_PWR_LVL])
const static int ap_core_index[PLATFORM_CORE_COUNT] = {
SC_R_A53_0, SC_R_A53_1, SC_R_A53_2,
SC_R_A53_3, SC_R_A72_0, SC_R_A72_1,
};
/* save gic dist/redist context when GIC is poewr down */
static struct plat_gic_ctx imx_gicv3_ctx;
static unsigned int gpt_lpcg, gpt_reg[2];
static void imx_enable_irqstr_wakeup(void)
{
uint32_t irq_mask;
gicv3_dist_ctx_t *dist_ctx = &imx_gicv3_ctx.dist_ctx;
/* put IRQSTR into ON mode */
sc_pm_set_resource_power_mode(ipc_handle, SC_R_IRQSTR_SCU2, SC_PM_PW_MODE_ON);
/* enable the irqsteer to handle wakeup irq */
mmio_write_32(IMX_WUP_IRQSTR_BASE, 0x1);
for (int i = 0; i < 15; i++) {
irq_mask = dist_ctx->gicd_isenabler[i];
mmio_write_32(IMX_WUP_IRQSTR_BASE + 0x3c - 0x4 * i, irq_mask);
}
/* set IRQSTR low power mode */
if (imx_is_wakeup_src_irqsteer())
sc_pm_set_resource_power_mode(ipc_handle, SC_R_IRQSTR_SCU2, SC_PM_PW_MODE_STBY);
else
sc_pm_set_resource_power_mode(ipc_handle, SC_R_IRQSTR_SCU2, SC_PM_PW_MODE_OFF);
}
static void imx_disable_irqstr_wakeup(void)
{
/* put IRQSTR into ON from STBY mode */
sc_pm_set_resource_power_mode(ipc_handle, SC_R_IRQSTR_SCU2, SC_PM_PW_MODE_ON);
/* disable the irqsteer */
mmio_write_32(IMX_WUP_IRQSTR_BASE, 0x0);
for (int i = 0; i < 16; i++)
mmio_write_32(IMX_WUP_IRQSTR_BASE + 0x4 + 0x4 * i, 0x0);
/* put IRQSTR into OFF mode */
sc_pm_set_resource_power_mode(ipc_handle, SC_R_IRQSTR_SCU2, SC_PM_PW_MODE_OFF);
}
int imx_pwr_domain_on(u_register_t mpidr)
{
int ret = PSCI_E_SUCCESS;
unsigned int cluster_id = MPIDR_AFFLVL1_VAL(mpidr);
unsigned int cpu_id = MPIDR_AFFLVL0_VAL(mpidr);
sc_pm_set_resource_power_mode(ipc_handle, cluster_id == 0 ?
SC_R_A53 : SC_R_A72, SC_PM_PW_MODE_ON);
sc_pm_req_low_power_mode(ipc_handle, cluster_id == 0 ?
SC_R_A53 : SC_R_A72, SC_PM_PW_MODE_ON);
if (sc_pm_set_resource_power_mode(ipc_handle,
ap_core_index[cpu_id + PLATFORM_CLUSTER0_CORE_COUNT * cluster_id],
SC_PM_PW_MODE_ON) != SC_ERR_NONE) {
ERROR("core %d power on failed!\n", cpu_id + PLATFORM_CLUSTER0_CORE_COUNT * cluster_id);
ret = PSCI_E_INTERN_FAIL;
}
if (sc_pm_cpu_start(ipc_handle,
ap_core_index[cpu_id + PLATFORM_CLUSTER0_CORE_COUNT * cluster_id],
true, BL31_BASE) != SC_ERR_NONE) {
ERROR("boot core %d failed!\n", cpu_id + PLATFORM_CLUSTER0_CORE_COUNT * cluster_id);
ret = PSCI_E_INTERN_FAIL;
}
return ret;
}
void imx_pwr_domain_on_finish(const psci_power_state_t *target_state)
{
uint64_t mpidr = read_mpidr_el1();
if (CLUSTER_PWR_STATE(target_state) == PLAT_MAX_OFF_STATE)
cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(mpidr));
plat_gic_pcpu_init();
plat_gic_cpuif_enable();
}
void imx_pwr_domain_off(const psci_power_state_t *target_state)
{
u_register_t mpidr = read_mpidr_el1();
unsigned int cluster_id = MPIDR_AFFLVL1_VAL(mpidr);
unsigned int cpu_id = MPIDR_AFFLVL0_VAL(mpidr);
plat_gic_cpuif_disable();
sc_pm_req_cpu_low_power_mode(ipc_handle,
ap_core_index[cpu_id + PLATFORM_CLUSTER0_CORE_COUNT * cluster_id],
SC_PM_PW_MODE_OFF, SC_PM_WAKE_SRC_NONE);
if (is_local_state_off(CLUSTER_PWR_STATE(target_state))) {
cci_disable_snoop_dvm_reqs(cluster_id);
sc_pm_req_low_power_mode(ipc_handle, cluster_id == 0 ?
SC_R_A53 : SC_R_A72, SC_PM_PW_MODE_OFF);
}
printf("turn off cluster:%d core:%d\n", cluster_id, cpu_id);
}
void imx_domain_suspend(const psci_power_state_t *target_state)
{
u_register_t mpidr = read_mpidr_el1();
unsigned int cluster_id = MPIDR_AFFLVL1_VAL(mpidr);
unsigned int cpu_id = MPIDR_AFFLVL0_VAL(mpidr);
if (is_local_state_off(CORE_PWR_STATE(target_state))) {
plat_gic_cpuif_disable();
sc_pm_set_cpu_resume(ipc_handle,
ap_core_index[cpu_id + PLATFORM_CLUSTER0_CORE_COUNT * cluster_id],
true, BL31_BASE);
sc_pm_req_cpu_low_power_mode(ipc_handle,
ap_core_index[cpu_id + PLATFORM_CLUSTER0_CORE_COUNT * cluster_id],
SC_PM_PW_MODE_OFF, SC_PM_WAKE_SRC_GIC);
} else {
dsb();
write_scr_el3(read_scr_el3() | SCR_FIQ_BIT);
isb();
}
if (is_local_state_off(CLUSTER_PWR_STATE(target_state))) {
cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(mpidr));
if (cluster_id == 1)
sc_pm_req_low_power_mode(ipc_handle, SC_R_A72, SC_PM_PW_MODE_OFF);
}
if (is_local_state_retn(SYSTEM_PWR_STATE(target_state))) {
plat_gic_cpuif_disable();
/* save gic context */
plat_gic_save(cpu_id, &imx_gicv3_ctx);
/* enable the irqsteer for wakeup */
imx_enable_irqstr_wakeup();
cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(mpidr));
/* Put GIC in LP mode. */
sc_pm_set_resource_power_mode(ipc_handle, SC_R_GIC, SC_PM_PW_MODE_OFF);
/* Save GPT clock and registers, then turn off its power */
gpt_lpcg = mmio_read_32(IMX_GPT_LPCG_BASE);
gpt_reg[0] = mmio_read_32(IMX_GPT_BASE);
gpt_reg[1] = mmio_read_32(IMX_GPT_BASE + 0x4);
sc_pm_set_resource_power_mode(ipc_handle, SC_R_GPT_0, SC_PM_PW_MODE_OFF);
sc_pm_req_low_power_mode(ipc_handle, SC_R_A53, SC_PM_PW_MODE_OFF);
sc_pm_req_low_power_mode(ipc_handle, SC_R_A72, SC_PM_PW_MODE_OFF);
sc_pm_req_low_power_mode(ipc_handle, SC_R_CCI, SC_PM_PW_MODE_OFF);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A53, SC_PM_SYS_IF_DDR,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_OFF);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A72, SC_PM_SYS_IF_DDR,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_OFF);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A53, SC_PM_SYS_IF_MU,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_OFF);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A72, SC_PM_SYS_IF_MU,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_OFF);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A53, SC_PM_SYS_IF_INTERCONNECT,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_OFF);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A72, SC_PM_SYS_IF_INTERCONNECT,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_OFF);
sc_pm_req_low_power_mode(ipc_handle, SC_R_CCI, SC_PM_PW_MODE_OFF);
sc_pm_set_cpu_resume(ipc_handle,
ap_core_index[cpu_id + PLATFORM_CLUSTER0_CORE_COUNT * cluster_id],
true, BL31_BASE);
if (imx_is_wakeup_src_irqsteer())
sc_pm_req_cpu_low_power_mode(ipc_handle,
ap_core_index[cpu_id + PLATFORM_CLUSTER0_CORE_COUNT * cluster_id],
SC_PM_PW_MODE_OFF, SC_PM_WAKE_SRC_IRQSTEER);
else
sc_pm_req_cpu_low_power_mode(ipc_handle,
ap_core_index[cpu_id + PLATFORM_CLUSTER0_CORE_COUNT * cluster_id],
SC_PM_PW_MODE_OFF, SC_PM_WAKE_SRC_SCU);
}
}
void imx_domain_suspend_finish(const psci_power_state_t *target_state)
{
u_register_t mpidr = read_mpidr_el1();
unsigned int cluster_id = MPIDR_AFFLVL1_VAL(mpidr);
unsigned int cpu_id = MPIDR_AFFLVL0_VAL(mpidr);
/* check the system level status */
if (is_local_state_retn(SYSTEM_PWR_STATE(target_state))) {
MU_Resume(SC_IPC_BASE);
sc_pm_req_cpu_low_power_mode(ipc_handle,
ap_core_index[cpu_id + PLATFORM_CLUSTER0_CORE_COUNT * cluster_id],
SC_PM_PW_MODE_ON, SC_PM_WAKE_SRC_GIC);
/* Put GIC/IRQSTR back to high power mode. */
sc_pm_set_resource_power_mode(ipc_handle, SC_R_GIC, SC_PM_PW_MODE_ON);
/* Turn GPT power and restore its clock and registers */
sc_pm_set_resource_power_mode(ipc_handle, SC_R_GPT_0, SC_PM_PW_MODE_ON);
sc_pm_clock_enable(ipc_handle, SC_R_GPT_0, SC_PM_CLK_PER, true, 0);
mmio_write_32(IMX_GPT_BASE, gpt_reg[0]);
mmio_write_32(IMX_GPT_BASE + 0x4, gpt_reg[1]);
mmio_write_32(IMX_GPT_LPCG_BASE, gpt_lpcg);
sc_pm_req_low_power_mode(ipc_handle, SC_R_A53, SC_PM_PW_MODE_ON);
sc_pm_req_low_power_mode(ipc_handle, SC_R_A72, SC_PM_PW_MODE_ON);
sc_pm_req_low_power_mode(ipc_handle, SC_R_CCI, SC_PM_PW_MODE_ON);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A53, SC_PM_SYS_IF_DDR,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_ON);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A72, SC_PM_SYS_IF_DDR,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_ON);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A53, SC_PM_SYS_IF_MU,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_ON);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A72, SC_PM_SYS_IF_MU,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_ON);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A53, SC_PM_SYS_IF_INTERCONNECT,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_ON);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A72, SC_PM_SYS_IF_INTERCONNECT,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_ON);
sc_pm_req_low_power_mode(ipc_handle, SC_R_CCI, SC_PM_PW_MODE_ON);
cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(mpidr));
/* restore gic context */
plat_gic_restore(cpu_id, &imx_gicv3_ctx);
/* disable the irqsteer wakeup */
imx_disable_irqstr_wakeup();
plat_gic_cpuif_enable();
}
/* check the cluster level power status */
if (is_local_state_off(CLUSTER_PWR_STATE(target_state))) {
cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(mpidr));
if (cluster_id == 1)
sc_pm_req_low_power_mode(ipc_handle, SC_R_A72, SC_PM_PW_MODE_ON);
}
/* check the core level power status */
if (is_local_state_off(CORE_PWR_STATE(target_state))) {
sc_pm_set_cpu_resume(ipc_handle,
ap_core_index[cpu_id + PLATFORM_CLUSTER0_CORE_COUNT * cluster_id],
false, BL31_BASE);
sc_pm_req_cpu_low_power_mode(ipc_handle,
ap_core_index[cpu_id + PLATFORM_CLUSTER0_CORE_COUNT * cluster_id],
SC_PM_PW_MODE_ON, SC_PM_WAKE_SRC_GIC);
plat_gic_cpuif_enable();
} else {
write_scr_el3(read_scr_el3() & (~SCR_FIQ_BIT));
isb();
}
}
int imx_validate_ns_entrypoint(uintptr_t ns_entrypoint)
{
return PSCI_E_SUCCESS;
}
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,
.pwr_domain_suspend = imx_domain_suspend,
.pwr_domain_suspend_finish = imx_domain_suspend_finish,
.get_sys_suspend_power_state = imx_get_sys_suspend_power_state,
.validate_power_state = imx_validate_power_state,
.validate_ns_entrypoint = imx_validate_ns_entrypoint,
.system_off = imx_system_off,
.system_reset = imx_system_reset,
.system_reset2 = imx_system_reset2,
.pwr_domain_pwr_down_wfi = imx_pwr_domain_pwr_down_wfi,
};
int plat_setup_psci_ops(uintptr_t sec_entrypoint,
const plat_psci_ops_t **psci_ops)
{
imx_mailbox_init(sec_entrypoint);
*psci_ops = &imx_plat_psci_ops;
/* make sure system sources power ON in low power mode by default */
sc_pm_req_low_power_mode(ipc_handle, SC_R_A53, SC_PM_PW_MODE_ON);
sc_pm_req_low_power_mode(ipc_handle, SC_R_A72, SC_PM_PW_MODE_ON);
sc_pm_req_low_power_mode(ipc_handle, SC_R_CCI, SC_PM_PW_MODE_ON);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A53, SC_PM_SYS_IF_DDR,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_ON);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A72, SC_PM_SYS_IF_DDR,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_ON);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A53, SC_PM_SYS_IF_MU,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_ON);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A72, SC_PM_SYS_IF_MU,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_ON);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A53, SC_PM_SYS_IF_INTERCONNECT,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_ON);
sc_pm_req_sys_if_power_mode(ipc_handle, SC_R_A72, SC_PM_SYS_IF_INTERCONNECT,
SC_PM_PW_MODE_ON, SC_PM_PW_MODE_ON);
return 0;
}
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