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338 lines
8.1 KiB
338 lines
8.1 KiB
/*
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* Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <assert.h>
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#include <arch_helpers.h>
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#include <common/debug.h>
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#include <drivers/arm/cci.h>
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#include <drivers/arm/gicv2.h>
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#include <drivers/arm/pl011.h>
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#include <drivers/arm/pl061_gpio.h>
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#include <drivers/delay_timer.h>
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#include <lib/mmio.h>
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#include <lib/psci/psci.h>
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#include <hi3660.h>
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#include <hi3660_crg.h>
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#include "drivers/pwrc/hisi_pwrc.h"
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#include "hikey960_def.h"
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#include "hikey960_private.h"
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#define CORE_PWR_STATE(state) \
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((state)->pwr_domain_state[MPIDR_AFFLVL0])
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#define CLUSTER_PWR_STATE(state) \
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((state)->pwr_domain_state[MPIDR_AFFLVL1])
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#define SYSTEM_PWR_STATE(state) \
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((state)->pwr_domain_state[PLAT_MAX_PWR_LVL])
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#define DMAC_GLB_REG_SEC 0x694
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#define AXI_CONF_BASE 0x820
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static unsigned int uart_base;
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static console_t console;
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static uintptr_t hikey960_sec_entrypoint;
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static void hikey960_pwr_domain_standby(plat_local_state_t cpu_state)
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{
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unsigned long scr;
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scr = read_scr_el3();
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/* Enable Physical IRQ and FIQ to wake the CPU */
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write_scr_el3(scr | SCR_IRQ_BIT | SCR_FIQ_BIT);
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/* Add barrier before CPU enter WFI state */
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isb();
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dsb();
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wfi();
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/*
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* Restore SCR to the original value, synchronisazion of
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* scr_el3 is done by eret while el3_exit to save some
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* execution cycles.
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*/
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write_scr_el3(scr);
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}
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static int hikey960_pwr_domain_on(u_register_t mpidr)
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{
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unsigned int core = mpidr & MPIDR_CPU_MASK;
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unsigned int cluster =
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(mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS;
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int cluster_stat = cluster_is_powered_on(cluster);
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hisi_set_cpu_boot_flag(cluster, core);
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mmio_write_32(CRG_REG_BASE + CRG_RVBAR(cluster, core),
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hikey960_sec_entrypoint >> 2);
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if (cluster_stat)
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hisi_powerup_core(cluster, core);
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else
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hisi_powerup_cluster(cluster, core);
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return PSCI_E_SUCCESS;
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}
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static void
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hikey960_pwr_domain_on_finish(const psci_power_state_t *target_state)
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{
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if (CLUSTER_PWR_STATE(target_state) == PLAT_MAX_OFF_STATE)
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cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
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gicv2_pcpu_distif_init();
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gicv2_cpuif_enable();
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}
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void hikey960_pwr_domain_off(const psci_power_state_t *target_state)
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{
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unsigned long mpidr = read_mpidr_el1();
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unsigned int core = mpidr & MPIDR_CPU_MASK;
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unsigned int cluster =
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(mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS;
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clr_ex();
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isb();
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dsbsy();
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gicv2_cpuif_disable();
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hisi_clear_cpu_boot_flag(cluster, core);
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hisi_powerdn_core(cluster, core);
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/* check if any core is powered up */
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if (hisi_test_cpu_down(cluster, core)) {
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cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
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isb();
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dsbsy();
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hisi_powerdn_cluster(cluster, core);
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}
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}
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static void __dead2 hikey960_system_off(void)
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{
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gpio_set_direction(176, GPIO_DIR_OUT);
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gpio_set_value(176, GPIO_LEVEL_LOW);
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panic();
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}
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static void __dead2 hikey960_system_reset(void)
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{
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dsb();
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isb();
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mdelay(2000);
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mmio_write_32(SCTRL_SCPEREN1_REG,
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SCPEREN1_WAIT_DDR_SELFREFRESH_DONE_BYPASS);
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mmio_write_32(SCTRL_SCSYSSTAT_REG, 0xdeadbeef);
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panic();
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}
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int hikey960_validate_power_state(unsigned int power_state,
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psci_power_state_t *req_state)
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{
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unsigned int pstate = psci_get_pstate_type(power_state);
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unsigned int pwr_lvl = psci_get_pstate_pwrlvl(power_state);
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int i;
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assert(req_state);
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if (pwr_lvl > PLAT_MAX_PWR_LVL)
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return PSCI_E_INVALID_PARAMS;
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/* Sanity check the requested state */
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if (pstate == PSTATE_TYPE_STANDBY) {
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/*
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* It's possible to enter standby only on power level 0
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* Ignore any other power level.
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*/
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if (pwr_lvl != MPIDR_AFFLVL0)
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return PSCI_E_INVALID_PARAMS;
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req_state->pwr_domain_state[MPIDR_AFFLVL0] =
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PLAT_MAX_RET_STATE;
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} else {
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for (i = MPIDR_AFFLVL0; i <= pwr_lvl; i++)
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req_state->pwr_domain_state[i] =
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PLAT_MAX_OFF_STATE;
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}
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/*
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* We expect the 'state id' to be zero.
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*/
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if (psci_get_pstate_id(power_state))
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return PSCI_E_INVALID_PARAMS;
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return PSCI_E_SUCCESS;
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}
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static int hikey960_validate_ns_entrypoint(uintptr_t entrypoint)
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{
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/*
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* Check if the non secure entrypoint lies within the non
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* secure DRAM.
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*/
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if ((entrypoint > DDR_BASE) && (entrypoint < (DDR_BASE + DDR_SIZE)))
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return PSCI_E_SUCCESS;
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return PSCI_E_INVALID_ADDRESS;
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}
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static void hikey960_pwr_domain_suspend(const psci_power_state_t *target_state)
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{
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u_register_t mpidr = read_mpidr_el1();
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unsigned int core = mpidr & MPIDR_CPU_MASK;
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unsigned int cluster =
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(mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS;
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if (CORE_PWR_STATE(target_state) != PLAT_MAX_OFF_STATE)
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return;
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if (CORE_PWR_STATE(target_state) == PLAT_MAX_OFF_STATE) {
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clr_ex();
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isb();
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dsbsy();
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gicv2_cpuif_disable();
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hisi_cpuidle_lock(cluster, core);
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hisi_set_cpuidle_flag(cluster, core);
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hisi_cpuidle_unlock(cluster, core);
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mmio_write_32(CRG_REG_BASE + CRG_RVBAR(cluster, core),
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hikey960_sec_entrypoint >> 2);
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hisi_enter_core_idle(cluster, core);
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}
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/* Perform the common cluster specific operations */
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if (CLUSTER_PWR_STATE(target_state) == PLAT_MAX_OFF_STATE) {
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hisi_cpuidle_lock(cluster, core);
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hisi_disable_pdc(cluster);
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/* check if any core is powered up */
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if (hisi_test_pwrdn_allcores(cluster, core)) {
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cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(mpidr));
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isb();
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dsbsy();
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/* mask the pdc wakeup irq, then
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* enable pdc to power down the core
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*/
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hisi_pdc_mask_cluster_wakeirq(cluster);
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hisi_enable_pdc(cluster);
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hisi_cpuidle_unlock(cluster, core);
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/* check the SR flag bit to determine
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* CLUSTER_IDLE_IPC or AP_SR_IPC to send
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*/
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if (hisi_test_ap_suspend_flag())
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hisi_enter_ap_suspend(cluster, core);
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else
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hisi_enter_cluster_idle(cluster, core);
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} else {
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/* enable pdc */
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hisi_enable_pdc(cluster);
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hisi_cpuidle_unlock(cluster, core);
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}
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}
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}
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static void hikey960_sr_dma_reinit(void)
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{
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unsigned int ctr = 0;
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mmio_write_32(DMAC_BASE + DMAC_GLB_REG_SEC, 0x3);
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/* 1~15 channel is set non_secure */
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for (ctr = 1; ctr <= 15; ctr++)
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mmio_write_32(DMAC_BASE + AXI_CONF_BASE + ctr * (0x40),
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(1 << 6) | (1 << 18));
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}
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static void
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hikey960_pwr_domain_suspend_finish(const psci_power_state_t *target_state)
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{
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unsigned long mpidr = read_mpidr_el1();
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unsigned int core = mpidr & MPIDR_CPU_MASK;
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unsigned int cluster =
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(mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS;
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/* Nothing to be done on waking up from retention from CPU level */
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if (CORE_PWR_STATE(target_state) != PLAT_MAX_OFF_STATE)
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return;
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hisi_cpuidle_lock(cluster, core);
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hisi_clear_cpuidle_flag(cluster, core);
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hisi_cpuidle_unlock(cluster, core);
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if (hisi_test_ap_suspend_flag()) {
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hikey960_sr_dma_reinit();
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gicv2_cpuif_enable();
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console_pl011_register(uart_base, PL011_UART_CLK_IN_HZ,
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PL011_BAUDRATE, &console);
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}
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hikey960_pwr_domain_on_finish(target_state);
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}
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static void hikey960_get_sys_suspend_power_state(psci_power_state_t *req_state)
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{
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int i;
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for (i = MPIDR_AFFLVL0; i <= PLAT_MAX_PWR_LVL; i++)
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req_state->pwr_domain_state[i] = PLAT_MAX_OFF_STATE;
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}
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static const plat_psci_ops_t hikey960_psci_ops = {
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.cpu_standby = hikey960_pwr_domain_standby,
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.pwr_domain_on = hikey960_pwr_domain_on,
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.pwr_domain_on_finish = hikey960_pwr_domain_on_finish,
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.pwr_domain_off = hikey960_pwr_domain_off,
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.pwr_domain_suspend = hikey960_pwr_domain_suspend,
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.pwr_domain_suspend_finish = hikey960_pwr_domain_suspend_finish,
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.system_off = hikey960_system_off,
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.system_reset = hikey960_system_reset,
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.validate_power_state = hikey960_validate_power_state,
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.validate_ns_entrypoint = hikey960_validate_ns_entrypoint,
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.get_sys_suspend_power_state = hikey960_get_sys_suspend_power_state,
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};
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int plat_setup_psci_ops(uintptr_t sec_entrypoint,
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const plat_psci_ops_t **psci_ops)
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{
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unsigned int id = 0;
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int ret;
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ret = hikey960_read_boardid(&id);
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if (ret == 0) {
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if (id == 5300U)
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uart_base = PL011_UART5_BASE;
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else
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uart_base = PL011_UART6_BASE;
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} else {
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uart_base = PL011_UART6_BASE;
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}
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hikey960_sec_entrypoint = sec_entrypoint;
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INFO("%s: sec_entrypoint=0x%lx\n", __func__,
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(unsigned long)hikey960_sec_entrypoint);
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/*
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* Initialize PSCI ops struct
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*/
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*psci_ops = &hikey960_psci_ops;
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return 0;
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}
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