Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 326 insertions, 0 deletions

diff --git a/plat/imx/imx8qm/imx8qm_psci.c b/plat/imx/imx8qm/imx8qm_psci.c
new file mode 100644
index 0000000..bdba37c
--- /dev/null
+++ b/plat/imx/imx8qm/imx8qm_psci.c
@@ -0,0 +1,326 @@
+/*
+ * 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);
+
+	if (cluster_id == 1)
+		sc_pm_req_low_power_mode(ipc_handle, 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);
+		if (cluster_id == 1)
+			sc_pm_req_low_power_mode(ipc_handle, 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,
+};
+
+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;
+}