Varun Wadekar | 921b906 | 2015-08-25 17:03:14 +0530 | [diff] [blame] | 1 | /* |
Antonio Nino Diaz | 4b32e62 | 2018-08-16 16:52:57 +0100 | [diff] [blame] | 2 | * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved. |
Varun Wadekar | b5b15b2 | 2018-05-17 10:10:25 -0700 | [diff] [blame] | 3 | * Copyright (c) 2020, NVIDIA Corporation. All rights reserved. |
Varun Wadekar | 921b906 | 2015-08-25 17:03:14 +0530 | [diff] [blame] | 4 | * |
dp-arm | fa3cf0b | 2017-05-03 09:38:09 +0100 | [diff] [blame] | 5 | * SPDX-License-Identifier: BSD-3-Clause |
Varun Wadekar | 921b906 | 2015-08-25 17:03:14 +0530 | [diff] [blame] | 6 | */ |
| 7 | |
Antonio Nino Diaz | e0f9063 | 2018-12-14 00:18:21 +0000 | [diff] [blame] | 8 | #include <assert.h> |
Jeetesh Burman | 50cd106 | 2018-07-19 13:07:23 +0530 | [diff] [blame] | 9 | #include <stdbool.h> |
Antonio Nino Diaz | e0f9063 | 2018-12-14 00:18:21 +0000 | [diff] [blame] | 10 | #include <string.h> |
| 11 | |
Varun Wadekar | abd153c | 2015-09-14 09:31:39 +0530 | [diff] [blame] | 12 | #include <arch.h> |
| 13 | #include <arch_helpers.h> |
Antonio Nino Diaz | e0f9063 | 2018-12-14 00:18:21 +0000 | [diff] [blame] | 14 | #include <common/bl_common.h> |
| 15 | #include <common/debug.h> |
Varun Wadekar | a64806a | 2016-01-05 15:17:41 -0800 | [diff] [blame] | 16 | #include <context.h> |
Harvey Hsieh | fbdfce1 | 2016-11-23 19:13:08 +0800 | [diff] [blame] | 17 | #include <cortex_a57.h> |
Varun Wadekar | 8964509 | 2016-02-09 14:55:44 -0800 | [diff] [blame] | 18 | #include <denver.h> |
Antonio Nino Diaz | e0f9063 | 2018-12-14 00:18:21 +0000 | [diff] [blame] | 19 | #include <lib/el3_runtime/context_mgmt.h> |
| 20 | #include <lib/psci/psci.h> |
| 21 | #include <plat/common/platform.h> |
| 22 | |
Jeetesh Burman | 50cd106 | 2018-07-19 13:07:23 +0530 | [diff] [blame] | 23 | #include <bpmp_ipc.h> |
Varun Wadekar | abd153c | 2015-09-14 09:31:39 +0530 | [diff] [blame] | 24 | #include <mce.h> |
Pritesh Raithatha | 75c9443 | 2018-08-03 15:48:15 +0530 | [diff] [blame] | 25 | #include <memctrl_v2.h> |
Jeetesh Burman | 50cd106 | 2018-07-19 13:07:23 +0530 | [diff] [blame] | 26 | #include <security_engine.h> |
Varun Wadekar | b877615 | 2016-03-03 13:52:52 -0800 | [diff] [blame] | 27 | #include <smmu.h> |
Varun Wadekar | 782c83d | 2017-03-14 14:25:35 -0700 | [diff] [blame] | 28 | #include <t18x_ari.h> |
Varun Wadekar | fa88767 | 2017-11-08 14:45:08 -0800 | [diff] [blame] | 29 | #include <tegra186_private.h> |
Varun Wadekar | 921b906 | 2015-08-25 17:03:14 +0530 | [diff] [blame] | 30 | #include <tegra_private.h> |
| 31 | |
Antonio Nino Diaz | 4b32e62 | 2018-08-16 16:52:57 +0100 | [diff] [blame] | 32 | extern void memcpy16(void *dest, const void *src, unsigned int length); |
Varun Wadekar | d66ee54 | 2016-02-29 10:24:30 -0800 | [diff] [blame] | 33 | |
Varun Wadekar | 4223657 | 2016-01-18 19:03:19 -0800 | [diff] [blame] | 34 | /* state id mask */ |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 35 | #define TEGRA186_STATE_ID_MASK 0xFU |
Varun Wadekar | 4223657 | 2016-01-18 19:03:19 -0800 | [diff] [blame] | 36 | /* constants to get power state's wake time */ |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 37 | #define TEGRA186_WAKE_TIME_MASK 0x0FFFFFF0U |
| 38 | #define TEGRA186_WAKE_TIME_SHIFT 4U |
Varun Wadekar | 698e7c6 | 2016-03-28 15:05:03 -0700 | [diff] [blame] | 39 | /* default core wake mask for CPU_SUSPEND */ |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 40 | #define TEGRA186_CORE_WAKE_MASK 0x180cU |
Varun Wadekar | b877615 | 2016-03-03 13:52:52 -0800 | [diff] [blame] | 41 | /* context size to save during system suspend */ |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 42 | #define TEGRA186_SE_CONTEXT_SIZE 3U |
Varun Wadekar | 4223657 | 2016-01-18 19:03:19 -0800 | [diff] [blame] | 43 | |
Varun Wadekar | b877615 | 2016-03-03 13:52:52 -0800 | [diff] [blame] | 44 | static uint32_t se_regs[TEGRA186_SE_CONTEXT_SIZE]; |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 45 | static struct tegra_psci_percpu_data { |
| 46 | uint32_t wake_time; |
| 47 | } __aligned(CACHE_WRITEBACK_GRANULE) tegra_percpu_data[PLATFORM_CORE_COUNT]; |
Varun Wadekar | 4223657 | 2016-01-18 19:03:19 -0800 | [diff] [blame] | 48 | |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 49 | int32_t tegra_soc_validate_power_state(uint32_t power_state, |
Varun Wadekar | c2c3a2a | 2016-01-08 17:38:51 -0800 | [diff] [blame] | 50 | psci_power_state_t *req_state) |
Varun Wadekar | 921b906 | 2015-08-25 17:03:14 +0530 | [diff] [blame] | 51 | { |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 52 | uint8_t state_id = (uint8_t)psci_get_pstate_id(power_state) & TEGRA186_STATE_ID_MASK; |
| 53 | uint32_t cpu = plat_my_core_pos(); |
| 54 | int32_t ret = PSCI_E_SUCCESS; |
Varun Wadekar | 8964509 | 2016-02-09 14:55:44 -0800 | [diff] [blame] | 55 | |
Krishna Sitaraman | 86569d1 | 2016-08-18 15:41:21 -0700 | [diff] [blame] | 56 | /* save the core wake time (in TSC ticks)*/ |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 57 | tegra_percpu_data[cpu].wake_time = (power_state & TEGRA186_WAKE_TIME_MASK) |
Krishna Sitaraman | 86569d1 | 2016-08-18 15:41:21 -0700 | [diff] [blame] | 58 | << TEGRA186_WAKE_TIME_SHIFT; |
Varun Wadekar | 4223657 | 2016-01-18 19:03:19 -0800 | [diff] [blame] | 59 | |
Mustafa Yigit Bilgen | f40bc2c | 2016-09-02 19:30:22 -0700 | [diff] [blame] | 60 | /* |
| 61 | * Clean percpu_data[cpu] to DRAM. This needs to be done to ensure that |
| 62 | * the correct value is read in tegra_soc_pwr_domain_suspend(), which |
| 63 | * is called with caches disabled. It is possible to read a stale value |
| 64 | * from DRAM in that function, because the L2 cache is not flushed |
| 65 | * unless the cluster is entering CC6/CC7. |
| 66 | */ |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 67 | clean_dcache_range((uint64_t)&tegra_percpu_data[cpu], |
| 68 | sizeof(tegra_percpu_data[cpu])); |
Mustafa Yigit Bilgen | f40bc2c | 2016-09-02 19:30:22 -0700 | [diff] [blame] | 69 | |
Varun Wadekar | 4223657 | 2016-01-18 19:03:19 -0800 | [diff] [blame] | 70 | /* Sanity check the requested state id */ |
| 71 | switch (state_id) { |
| 72 | case PSTATE_ID_CORE_IDLE: |
| 73 | case PSTATE_ID_CORE_POWERDN: |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 74 | |
Varun Wadekar | d969c58 | 2020-07-23 10:31:42 -0700 | [diff] [blame] | 75 | if (psci_get_pstate_type(power_state) != PSTATE_TYPE_POWERDOWN) { |
| 76 | ret = PSCI_E_INVALID_PARAMS; |
| 77 | break; |
| 78 | } |
| 79 | |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 80 | /* Core powerdown request */ |
Varun Wadekar | 4223657 | 2016-01-18 19:03:19 -0800 | [diff] [blame] | 81 | req_state->pwr_domain_state[MPIDR_AFFLVL0] = state_id; |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 82 | req_state->pwr_domain_state[MPIDR_AFFLVL1] = state_id; |
Varun Wadekar | 4223657 | 2016-01-18 19:03:19 -0800 | [diff] [blame] | 83 | |
| 84 | break; |
| 85 | |
| 86 | default: |
| 87 | ERROR("%s: unsupported state id (%d)\n", __func__, state_id); |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 88 | ret = PSCI_E_INVALID_PARAMS; |
| 89 | break; |
Varun Wadekar | 4223657 | 2016-01-18 19:03:19 -0800 | [diff] [blame] | 90 | } |
| 91 | |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 92 | return ret; |
Varun Wadekar | 4223657 | 2016-01-18 19:03:19 -0800 | [diff] [blame] | 93 | } |
| 94 | |
Varun Wadekar | b5b15b2 | 2018-05-17 10:10:25 -0700 | [diff] [blame] | 95 | int32_t tegra_soc_cpu_standby(plat_local_state_t cpu_state) |
| 96 | { |
| 97 | (void)cpu_state; |
| 98 | return PSCI_E_SUCCESS; |
| 99 | } |
| 100 | |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 101 | int32_t tegra_soc_pwr_domain_suspend(const psci_power_state_t *target_state) |
Varun Wadekar | 4223657 | 2016-01-18 19:03:19 -0800 | [diff] [blame] | 102 | { |
| 103 | const plat_local_state_t *pwr_domain_state; |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 104 | uint8_t stateid_afflvl0, stateid_afflvl2; |
| 105 | uint32_t cpu = plat_my_core_pos(); |
| 106 | const plat_params_from_bl2_t *params_from_bl2 = bl31_get_plat_params(); |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 107 | mce_cstate_info_t cstate_info = { 0 }; |
Pritesh Raithatha | 75c9443 | 2018-08-03 15:48:15 +0530 | [diff] [blame] | 108 | uint64_t mc_ctx_base; |
Varun Wadekar | b877615 | 2016-03-03 13:52:52 -0800 | [diff] [blame] | 109 | uint32_t val; |
| 110 | |
Varun Wadekar | 4223657 | 2016-01-18 19:03:19 -0800 | [diff] [blame] | 111 | /* get the state ID */ |
| 112 | pwr_domain_state = target_state->pwr_domain_state; |
| 113 | stateid_afflvl0 = pwr_domain_state[MPIDR_AFFLVL0] & |
| 114 | TEGRA186_STATE_ID_MASK; |
Varun Wadekar | b877615 | 2016-03-03 13:52:52 -0800 | [diff] [blame] | 115 | stateid_afflvl2 = pwr_domain_state[PLAT_MAX_PWR_LVL] & |
| 116 | TEGRA186_STATE_ID_MASK; |
Varun Wadekar | 4223657 | 2016-01-18 19:03:19 -0800 | [diff] [blame] | 117 | |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 118 | if ((stateid_afflvl0 == PSTATE_ID_CORE_IDLE) || |
| 119 | (stateid_afflvl0 == PSTATE_ID_CORE_POWERDN)) { |
Varun Wadekar | 4223657 | 2016-01-18 19:03:19 -0800 | [diff] [blame] | 120 | |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 121 | /* Enter CPU idle/powerdown */ |
| 122 | val = (stateid_afflvl0 == PSTATE_ID_CORE_IDLE) ? |
Anthony Zhou | 0e07e45 | 2017-07-26 17:16:54 +0800 | [diff] [blame] | 123 | (uint32_t)TEGRA_ARI_CORE_C6 : (uint32_t)TEGRA_ARI_CORE_C7; |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 124 | (void)mce_command_handler((uint64_t)MCE_CMD_ENTER_CSTATE, (uint64_t)val, |
| 125 | tegra_percpu_data[cpu].wake_time, 0U); |
Varun Wadekar | c2c3a2a | 2016-01-08 17:38:51 -0800 | [diff] [blame] | 126 | |
Varun Wadekar | b877615 | 2016-03-03 13:52:52 -0800 | [diff] [blame] | 127 | } else if (stateid_afflvl2 == PSTATE_ID_SOC_POWERDN) { |
| 128 | |
Varun Wadekar | b877615 | 2016-03-03 13:52:52 -0800 | [diff] [blame] | 129 | /* save SE registers */ |
| 130 | se_regs[0] = mmio_read_32(TEGRA_SE0_BASE + |
| 131 | SE_MUTEX_WATCHDOG_NS_LIMIT); |
| 132 | se_regs[1] = mmio_read_32(TEGRA_RNG1_BASE + |
| 133 | RNG_MUTEX_WATCHDOG_NS_LIMIT); |
| 134 | se_regs[2] = mmio_read_32(TEGRA_PKA1_BASE + |
| 135 | PKA_MUTEX_WATCHDOG_NS_LIMIT); |
| 136 | |
| 137 | /* save 'Secure Boot' Processor Feature Config Register */ |
| 138 | val = mmio_read_32(TEGRA_MISC_BASE + MISCREG_PFCFG); |
Steven Kao | 186485e | 2017-10-23 18:22:09 +0800 | [diff] [blame] | 139 | mmio_write_32(TEGRA_SCRATCH_BASE + SCRATCH_SECURE_BOOTP_FCFG, val); |
Varun Wadekar | b877615 | 2016-03-03 13:52:52 -0800 | [diff] [blame] | 140 | |
Pritesh Raithatha | 75c9443 | 2018-08-03 15:48:15 +0530 | [diff] [blame] | 141 | /* save MC context to TZDRAM */ |
Varun Wadekar | 17ad11a | 2018-11-09 09:08:16 -0800 | [diff] [blame] | 142 | mc_ctx_base = params_from_bl2->tzdram_base; |
Pritesh Raithatha | 75c9443 | 2018-08-03 15:48:15 +0530 | [diff] [blame] | 143 | tegra_mc_save_context((uintptr_t)mc_ctx_base); |
Varun Wadekar | b877615 | 2016-03-03 13:52:52 -0800 | [diff] [blame] | 144 | |
| 145 | /* Prepare for system suspend */ |
Anthony Zhou | 0e07e45 | 2017-07-26 17:16:54 +0800 | [diff] [blame] | 146 | cstate_info.cluster = (uint32_t)TEGRA_ARI_CLUSTER_CC7; |
| 147 | cstate_info.system = (uint32_t)TEGRA_ARI_SYSTEM_SC7; |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 148 | cstate_info.system_state_force = 1; |
| 149 | cstate_info.update_wake_mask = 1; |
| 150 | mce_update_cstate_info(&cstate_info); |
Varun Wadekar | 2a7d87e | 2017-11-10 10:26:57 -0800 | [diff] [blame] | 151 | |
Varun Wadekar | a9002bb | 2016-03-28 15:11:43 -0700 | [diff] [blame] | 152 | /* Loop until system suspend is allowed */ |
| 153 | do { |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 154 | val = (uint32_t)mce_command_handler( |
| 155 | (uint64_t)MCE_CMD_IS_SC7_ALLOWED, |
Anthony Zhou | 0e07e45 | 2017-07-26 17:16:54 +0800 | [diff] [blame] | 156 | (uint64_t)TEGRA_ARI_CORE_C7, |
Varun Wadekar | a9002bb | 2016-03-28 15:11:43 -0700 | [diff] [blame] | 157 | MCE_CORE_SLEEP_TIME_INFINITE, |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 158 | 0U); |
| 159 | } while (val == 0U); |
Varun Wadekar | a9002bb | 2016-03-28 15:11:43 -0700 | [diff] [blame] | 160 | |
Varun Wadekar | 93bed2a | 2016-03-18 13:07:33 -0700 | [diff] [blame] | 161 | /* Instruct the MCE to enter system suspend state */ |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 162 | (void)mce_command_handler((uint64_t)MCE_CMD_ENTER_CSTATE, |
Anthony Zhou | 0e07e45 | 2017-07-26 17:16:54 +0800 | [diff] [blame] | 163 | (uint64_t)TEGRA_ARI_CORE_C7, MCE_CORE_SLEEP_TIME_INFINITE, 0U); |
Varun Wadekar | 2a7d87e | 2017-11-10 10:26:57 -0800 | [diff] [blame] | 164 | |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 165 | } else { |
| 166 | ; /* do nothing */ |
Varun Wadekar | 921b906 | 2015-08-25 17:03:14 +0530 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | return PSCI_E_SUCCESS; |
| 170 | } |
Varun Wadekar | abd153c | 2015-09-14 09:31:39 +0530 | [diff] [blame] | 171 | |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 172 | /******************************************************************************* |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 173 | * Helper function to check if this is the last ON CPU in the cluster |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 174 | ******************************************************************************/ |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 175 | static bool tegra_last_cpu_in_cluster(const plat_local_state_t *states, |
| 176 | uint32_t ncpu) |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 177 | { |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 178 | plat_local_state_t target; |
| 179 | bool last_on_cpu = true; |
| 180 | uint32_t num_cpus = ncpu, pos = 0; |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 181 | |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 182 | do { |
| 183 | target = states[pos]; |
| 184 | if (target != PLAT_MAX_OFF_STATE) { |
| 185 | last_on_cpu = false; |
| 186 | } |
| 187 | --num_cpus; |
| 188 | pos++; |
| 189 | } while (num_cpus != 0U); |
| 190 | |
| 191 | return last_on_cpu; |
| 192 | } |
| 193 | |
| 194 | /******************************************************************************* |
| 195 | * Helper function to get target power state for the cluster |
| 196 | ******************************************************************************/ |
| 197 | static plat_local_state_t tegra_get_afflvl1_pwr_state(const plat_local_state_t *states, |
| 198 | uint32_t ncpu) |
| 199 | { |
| 200 | uint32_t core_pos = (uint32_t)read_mpidr() & (uint32_t)MPIDR_CPU_MASK; |
| 201 | uint32_t cpu = plat_my_core_pos(); |
| 202 | int32_t ret; |
| 203 | plat_local_state_t target = states[core_pos]; |
| 204 | mce_cstate_info_t cstate_info = { 0 }; |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 205 | |
| 206 | /* CPU suspend */ |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 207 | if (target == PSTATE_ID_CORE_POWERDN) { |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 208 | /* Program default wake mask */ |
| 209 | cstate_info.wake_mask = TEGRA186_CORE_WAKE_MASK; |
| 210 | cstate_info.update_wake_mask = 1; |
| 211 | mce_update_cstate_info(&cstate_info); |
| 212 | |
| 213 | /* Check if CCx state is allowed. */ |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 214 | ret = mce_command_handler((uint64_t)MCE_CMD_IS_CCX_ALLOWED, |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 215 | (uint64_t)TEGRA_ARI_CORE_C7, |
| 216 | tegra_percpu_data[cpu].wake_time, |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 217 | 0U); |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 218 | if (ret == 0) { |
| 219 | target = PSCI_LOCAL_STATE_RUN; |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 220 | } |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 221 | } |
| 222 | |
| 223 | /* CPU off */ |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 224 | if (target == PLAT_MAX_OFF_STATE) { |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 225 | /* Enable cluster powerdn from last CPU in the cluster */ |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 226 | if (tegra_last_cpu_in_cluster(states, ncpu)) { |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 227 | /* Enable CC7 state and turn off wake mask */ |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 228 | cstate_info.cluster = (uint32_t)TEGRA_ARI_CLUSTER_CC7; |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 229 | cstate_info.update_wake_mask = 1; |
| 230 | mce_update_cstate_info(&cstate_info); |
| 231 | |
| 232 | /* Check if CCx state is allowed. */ |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 233 | ret = mce_command_handler((uint64_t)MCE_CMD_IS_CCX_ALLOWED, |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 234 | (uint64_t)TEGRA_ARI_CORE_C7, |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 235 | MCE_CORE_SLEEP_TIME_INFINITE, |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 236 | 0U); |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 237 | if (ret == 0) { |
| 238 | target = PSCI_LOCAL_STATE_RUN; |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 239 | } |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 240 | |
| 241 | } else { |
| 242 | |
| 243 | /* Turn off wake_mask */ |
| 244 | cstate_info.update_wake_mask = 1; |
| 245 | mce_update_cstate_info(&cstate_info); |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 246 | target = PSCI_LOCAL_STATE_RUN; |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 247 | } |
| 248 | } |
| 249 | |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 250 | return target; |
| 251 | } |
| 252 | |
| 253 | /******************************************************************************* |
| 254 | * Platform handler to calculate the proper target power level at the |
| 255 | * specified affinity level |
| 256 | ******************************************************************************/ |
Anthony Zhou | 0e07e45 | 2017-07-26 17:16:54 +0800 | [diff] [blame] | 257 | plat_local_state_t tegra_soc_get_target_pwr_state(uint32_t lvl, |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 258 | const plat_local_state_t *states, |
| 259 | uint32_t ncpu) |
| 260 | { |
| 261 | plat_local_state_t target = PSCI_LOCAL_STATE_RUN; |
Anthony Zhou | 0e07e45 | 2017-07-26 17:16:54 +0800 | [diff] [blame] | 262 | uint32_t cpu = plat_my_core_pos(); |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 263 | |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 264 | /* System Suspend */ |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 265 | if ((lvl == (uint32_t)MPIDR_AFFLVL2) && |
| 266 | (states[cpu] == PSTATE_ID_SOC_POWERDN)) { |
| 267 | target = PSTATE_ID_SOC_POWERDN; |
| 268 | } |
| 269 | |
| 270 | /* CPU off, CPU suspend */ |
| 271 | if (lvl == (uint32_t)MPIDR_AFFLVL1) { |
| 272 | target = tegra_get_afflvl1_pwr_state(states, ncpu); |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 273 | } |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 274 | |
Varun Wadekar | 1e7250b | 2017-05-24 08:47:15 -0700 | [diff] [blame] | 275 | /* target cluster/system state */ |
| 276 | return target; |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 277 | } |
| 278 | |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 279 | int32_t tegra_soc_pwr_domain_power_down_wfi(const psci_power_state_t *target_state) |
Varun Wadekar | 93bed2a | 2016-03-18 13:07:33 -0700 | [diff] [blame] | 280 | { |
| 281 | const plat_local_state_t *pwr_domain_state = |
| 282 | target_state->pwr_domain_state; |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 283 | const plat_params_from_bl2_t *params_from_bl2 = bl31_get_plat_params(); |
| 284 | uint8_t stateid_afflvl2 = pwr_domain_state[PLAT_MAX_PWR_LVL] & |
Varun Wadekar | 93bed2a | 2016-03-18 13:07:33 -0700 | [diff] [blame] | 285 | TEGRA186_STATE_ID_MASK; |
Steven Kao | 235e9c3 | 2016-12-23 15:43:17 +0800 | [diff] [blame] | 286 | uint64_t val; |
Jeetesh Burman | 50cd106 | 2018-07-19 13:07:23 +0530 | [diff] [blame] | 287 | uint64_t src_len_in_bytes = (uint64_t)(((uintptr_t)(&__BL31_END__) - |
| 288 | (uintptr_t)BL31_BASE)); |
| 289 | int32_t ret; |
Varun Wadekar | 93bed2a | 2016-03-18 13:07:33 -0700 | [diff] [blame] | 290 | |
| 291 | if (stateid_afflvl2 == PSTATE_ID_SOC_POWERDN) { |
Jeetesh Burman | 50cd106 | 2018-07-19 13:07:23 +0530 | [diff] [blame] | 292 | val = params_from_bl2->tzdram_base + |
Varun Wadekar | 17ad11a | 2018-11-09 09:08:16 -0800 | [diff] [blame] | 293 | tegra186_get_mc_ctx_size(); |
Jeetesh Burman | 50cd106 | 2018-07-19 13:07:23 +0530 | [diff] [blame] | 294 | |
| 295 | /* Initialise communication channel with BPMP */ |
| 296 | assert(tegra_bpmp_ipc_init() == 0); |
| 297 | |
| 298 | /* Enable SE clock */ |
Varun Wadekar | e55c27b | 2018-09-13 08:47:43 -0700 | [diff] [blame] | 299 | ret = tegra_bpmp_ipc_enable_clock(TEGRA186_CLK_SE); |
Jeetesh Burman | 50cd106 | 2018-07-19 13:07:23 +0530 | [diff] [blame] | 300 | if (ret != 0) { |
| 301 | ERROR("Failed to enable clock\n"); |
| 302 | return ret; |
| 303 | } |
| 304 | |
| 305 | /* |
| 306 | * Generate/save SHA256 of ATF during SC7 entry |
| 307 | */ |
| 308 | if (tegra_se_save_sha256_hash(BL31_BASE, |
| 309 | (uint32_t)src_len_in_bytes) != 0) { |
| 310 | ERROR("Hash calculation failed. Reboot\n"); |
| 311 | (void)tegra_soc_prepare_system_reset(); |
| 312 | } |
| 313 | |
Varun Wadekar | 93bed2a | 2016-03-18 13:07:33 -0700 | [diff] [blame] | 314 | /* |
| 315 | * The TZRAM loses power when we enter system suspend. To |
| 316 | * allow graceful exit from system suspend, we need to copy |
| 317 | * BL3-1 over to TZDRAM. |
| 318 | */ |
| 319 | val = params_from_bl2->tzdram_base + |
Varun Wadekar | 17ad11a | 2018-11-09 09:08:16 -0800 | [diff] [blame] | 320 | tegra186_get_mc_ctx_size(); |
Varun Wadekar | 93bed2a | 2016-03-18 13:07:33 -0700 | [diff] [blame] | 321 | memcpy16((void *)(uintptr_t)val, (void *)(uintptr_t)BL31_BASE, |
Varun Wadekar | a6c69ab | 2019-01-11 10:48:47 -0800 | [diff] [blame] | 322 | (uintptr_t)BL31_END - (uintptr_t)BL31_BASE); |
Jeetesh Burman | 50cd106 | 2018-07-19 13:07:23 +0530 | [diff] [blame] | 323 | |
Varun Wadekar | 17ad11a | 2018-11-09 09:08:16 -0800 | [diff] [blame] | 324 | /* |
| 325 | * Save code base and size; this would be used by SC7-RF to |
| 326 | * verify binary |
| 327 | */ |
| 328 | mmio_write_32(TEGRA_SCRATCH_BASE + SECURE_SCRATCH_RSV68_LO, |
| 329 | (uint32_t)val); |
| 330 | mmio_write_32(TEGRA_SCRATCH_BASE + SECURE_SCRATCH_RSV0_HI, |
| 331 | (uint32_t)src_len_in_bytes); |
| 332 | |
Varun Wadekar | e55c27b | 2018-09-13 08:47:43 -0700 | [diff] [blame] | 333 | ret = tegra_bpmp_ipc_disable_clock(TEGRA186_CLK_SE); |
Jeetesh Burman | 50cd106 | 2018-07-19 13:07:23 +0530 | [diff] [blame] | 334 | if (ret != 0) { |
| 335 | ERROR("Failed to disable clock\n"); |
| 336 | return ret; |
| 337 | } |
Varun Wadekar | 93bed2a | 2016-03-18 13:07:33 -0700 | [diff] [blame] | 338 | } |
| 339 | |
| 340 | return PSCI_E_SUCCESS; |
| 341 | } |
| 342 | |
Varun Wadekar | b5b15b2 | 2018-05-17 10:10:25 -0700 | [diff] [blame] | 343 | int32_t tegra_soc_pwr_domain_suspend_pwrdown_early(const psci_power_state_t *target_state) |
| 344 | { |
| 345 | return PSCI_E_NOT_SUPPORTED; |
| 346 | } |
| 347 | |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 348 | int32_t tegra_soc_pwr_domain_on(u_register_t mpidr) |
Varun Wadekar | abd153c | 2015-09-14 09:31:39 +0530 | [diff] [blame] | 349 | { |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 350 | int32_t ret = PSCI_E_SUCCESS; |
Anthony Zhou | 5a4ce00 | 2017-06-28 16:49:16 +0800 | [diff] [blame] | 351 | uint64_t target_cpu = mpidr & MPIDR_CPU_MASK; |
| 352 | uint64_t target_cluster = (mpidr & MPIDR_CLUSTER_MASK) >> |
| 353 | MPIDR_AFFINITY_BITS; |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 354 | |
Varun Wadekar | a2dd0b3 | 2017-10-17 10:29:24 -0700 | [diff] [blame] | 355 | if (target_cluster > ((uint32_t)PLATFORM_CLUSTER_COUNT - 1U)) { |
Varun Wadekar | abd153c | 2015-09-14 09:31:39 +0530 | [diff] [blame] | 356 | |
Varun Wadekar | abd153c | 2015-09-14 09:31:39 +0530 | [diff] [blame] | 357 | ERROR("%s: unsupported CPU (0x%lx)\n", __func__, mpidr); |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 358 | ret = PSCI_E_NOT_PRESENT; |
Varun Wadekar | abd153c | 2015-09-14 09:31:39 +0530 | [diff] [blame] | 359 | |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 360 | } else { |
| 361 | /* construct the target CPU # */ |
| 362 | target_cpu |= (target_cluster << 2); |
Varun Wadekar | abd153c | 2015-09-14 09:31:39 +0530 | [diff] [blame] | 363 | |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 364 | (void)mce_command_handler((uint64_t)MCE_CMD_ONLINE_CORE, target_cpu, 0U, 0U); |
| 365 | } |
Varun Wadekar | abd153c | 2015-09-14 09:31:39 +0530 | [diff] [blame] | 366 | |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 367 | return ret; |
Varun Wadekar | abd153c | 2015-09-14 09:31:39 +0530 | [diff] [blame] | 368 | } |
| 369 | |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 370 | int32_t tegra_soc_pwr_domain_on_finish(const psci_power_state_t *target_state) |
Varun Wadekar | b877615 | 2016-03-03 13:52:52 -0800 | [diff] [blame] | 371 | { |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 372 | uint8_t stateid_afflvl2 = target_state->pwr_domain_state[PLAT_MAX_PWR_LVL]; |
| 373 | uint8_t stateid_afflvl0 = target_state->pwr_domain_state[MPIDR_AFFLVL0]; |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 374 | mce_cstate_info_t cstate_info = { 0 }; |
Harvey Hsieh | fbdfce1 | 2016-11-23 19:13:08 +0800 | [diff] [blame] | 375 | uint64_t impl, val; |
| 376 | const plat_params_from_bl2_t *plat_params = bl31_get_plat_params(); |
| 377 | |
Anthony Zhou | 5a4ce00 | 2017-06-28 16:49:16 +0800 | [diff] [blame] | 378 | impl = (read_midr() >> MIDR_IMPL_SHIFT) & MIDR_IMPL_MASK; |
Harvey Hsieh | fbdfce1 | 2016-11-23 19:13:08 +0800 | [diff] [blame] | 379 | |
| 380 | /* |
| 381 | * Enable ECC and Parity Protection for Cortex-A57 CPUs (Tegra186 |
| 382 | * A02p and beyond). |
| 383 | */ |
Anthony Zhou | 5a4ce00 | 2017-06-28 16:49:16 +0800 | [diff] [blame] | 384 | if ((plat_params->l2_ecc_parity_prot_dis != 1) && (impl != DENVER_IMPL)) { |
Harvey Hsieh | fbdfce1 | 2016-11-23 19:13:08 +0800 | [diff] [blame] | 385 | |
| 386 | val = read_l2ctlr_el1(); |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 387 | val |= CORTEX_A57_L2_ECC_PARITY_PROTECTION_BIT; |
Harvey Hsieh | fbdfce1 | 2016-11-23 19:13:08 +0800 | [diff] [blame] | 388 | write_l2ctlr_el1(val); |
| 389 | } |
Varun Wadekar | b877615 | 2016-03-03 13:52:52 -0800 | [diff] [blame] | 390 | |
| 391 | /* |
Varun Wadekar | 5a40256 | 2016-04-29 11:25:46 -0700 | [diff] [blame] | 392 | * Reset power state info for CPUs when onlining, we set |
| 393 | * deepest power when offlining a core but that may not be |
| 394 | * requested by non-secure sw which controls idle states. It |
| 395 | * will re-init this info from non-secure software when the |
| 396 | * core come online. |
Varun Wadekar | d2da47a | 2016-04-09 00:40:45 -0700 | [diff] [blame] | 397 | */ |
Varun Wadekar | 5a40256 | 2016-04-29 11:25:46 -0700 | [diff] [blame] | 398 | if (stateid_afflvl0 == PLAT_MAX_OFF_STATE) { |
| 399 | |
Anthony Zhou | 0e07e45 | 2017-07-26 17:16:54 +0800 | [diff] [blame] | 400 | cstate_info.cluster = (uint32_t)TEGRA_ARI_CLUSTER_CC1; |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 401 | cstate_info.update_wake_mask = 1; |
| 402 | mce_update_cstate_info(&cstate_info); |
Varun Wadekar | 5a40256 | 2016-04-29 11:25:46 -0700 | [diff] [blame] | 403 | } |
Varun Wadekar | d2da47a | 2016-04-09 00:40:45 -0700 | [diff] [blame] | 404 | |
| 405 | /* |
Varun Wadekar | b877615 | 2016-03-03 13:52:52 -0800 | [diff] [blame] | 406 | * Check if we are exiting from deep sleep and restore SE |
| 407 | * context if we are. |
| 408 | */ |
Varun Wadekar | 5a40256 | 2016-04-29 11:25:46 -0700 | [diff] [blame] | 409 | if (stateid_afflvl2 == PSTATE_ID_SOC_POWERDN) { |
| 410 | |
Varun Wadekar | b877615 | 2016-03-03 13:52:52 -0800 | [diff] [blame] | 411 | mmio_write_32(TEGRA_SE0_BASE + SE_MUTEX_WATCHDOG_NS_LIMIT, |
| 412 | se_regs[0]); |
| 413 | mmio_write_32(TEGRA_RNG1_BASE + RNG_MUTEX_WATCHDOG_NS_LIMIT, |
| 414 | se_regs[1]); |
| 415 | mmio_write_32(TEGRA_PKA1_BASE + PKA_MUTEX_WATCHDOG_NS_LIMIT, |
| 416 | se_regs[2]); |
| 417 | |
| 418 | /* Init SMMU */ |
| 419 | tegra_smmu_init(); |
Varun Wadekar | 93bed2a | 2016-03-18 13:07:33 -0700 | [diff] [blame] | 420 | |
| 421 | /* |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 422 | * Reset power state info for the last core doing SC7 |
| 423 | * entry and exit, we set deepest power state as CC7 |
| 424 | * and SC7 for SC7 entry which may not be requested by |
| 425 | * non-secure SW which controls idle states. |
Varun Wadekar | 93bed2a | 2016-03-18 13:07:33 -0700 | [diff] [blame] | 426 | */ |
Anthony Zhou | 0e07e45 | 2017-07-26 17:16:54 +0800 | [diff] [blame] | 427 | cstate_info.cluster = (uint32_t)TEGRA_ARI_CLUSTER_CC7; |
| 428 | cstate_info.system = (uint32_t)TEGRA_ARI_SYSTEM_SC1; |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 429 | cstate_info.update_wake_mask = 1; |
| 430 | mce_update_cstate_info(&cstate_info); |
Varun Wadekar | b877615 | 2016-03-03 13:52:52 -0800 | [diff] [blame] | 431 | } |
| 432 | |
| 433 | return PSCI_E_SUCCESS; |
| 434 | } |
| 435 | |
Varun Wadekar | cb2dd3a | 2023-04-25 14:58:33 +0100 | [diff] [blame] | 436 | int32_t tegra_soc_pwr_domain_off_early(const psci_power_state_t *target_state) |
| 437 | { |
| 438 | /* Do not power off the boot CPU */ |
| 439 | if (plat_is_my_cpu_primary()) { |
| 440 | return PSCI_E_DENIED; |
| 441 | } |
| 442 | |
| 443 | return PSCI_E_SUCCESS; |
| 444 | } |
| 445 | |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 446 | int32_t tegra_soc_pwr_domain_off(const psci_power_state_t *target_state) |
Varun Wadekar | abd153c | 2015-09-14 09:31:39 +0530 | [diff] [blame] | 447 | { |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 448 | uint64_t impl = (read_midr() >> MIDR_IMPL_SHIFT) & (uint64_t)MIDR_IMPL_MASK; |
| 449 | |
| 450 | (void)target_state; |
Varun Wadekar | a64806a | 2016-01-05 15:17:41 -0800 | [diff] [blame] | 451 | |
Varun Wadekar | e26a55a | 2016-02-26 11:09:21 -0800 | [diff] [blame] | 452 | /* Disable Denver's DCO operations */ |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 453 | if (impl == DENVER_IMPL) { |
Varun Wadekar | e26a55a | 2016-02-26 11:09:21 -0800 | [diff] [blame] | 454 | denver_disable_dco(); |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 455 | } |
Varun Wadekar | e26a55a | 2016-02-26 11:09:21 -0800 | [diff] [blame] | 456 | |
Varun Wadekar | abd153c | 2015-09-14 09:31:39 +0530 | [diff] [blame] | 457 | /* Turn off CPU */ |
Anthony Zhou | 0e07e45 | 2017-07-26 17:16:54 +0800 | [diff] [blame] | 458 | (void)mce_command_handler((uint64_t)MCE_CMD_ENTER_CSTATE, |
| 459 | (uint64_t)TEGRA_ARI_CORE_C7, MCE_CORE_SLEEP_TIME_INFINITE, 0U); |
Varun Wadekar | 4a0b37a | 2016-04-09 00:36:42 -0700 | [diff] [blame] | 460 | |
| 461 | return PSCI_E_SUCCESS; |
Varun Wadekar | abd153c | 2015-09-14 09:31:39 +0530 | [diff] [blame] | 462 | } |
Varun Wadekar | 782c83d | 2017-03-14 14:25:35 -0700 | [diff] [blame] | 463 | |
| 464 | __dead2 void tegra_soc_prepare_system_off(void) |
| 465 | { |
Varun Wadekar | 71d0e8d | 2017-05-17 14:35:33 -0700 | [diff] [blame] | 466 | /* power off the entire system */ |
Anthony Zhou | 0e07e45 | 2017-07-26 17:16:54 +0800 | [diff] [blame] | 467 | mce_enter_ccplex_state((uint32_t)TEGRA_ARI_MISC_CCPLEX_SHUTDOWN_POWER_OFF); |
Varun Wadekar | d66ee54 | 2016-02-29 10:24:30 -0800 | [diff] [blame] | 468 | |
| 469 | wfi(); |
| 470 | |
| 471 | /* wait for the system to power down */ |
| 472 | for (;;) { |
| 473 | ; |
| 474 | } |
Varun Wadekar | 782c83d | 2017-03-14 14:25:35 -0700 | [diff] [blame] | 475 | } |
Varun Wadekar | 38020c9 | 2016-01-07 14:36:12 -0800 | [diff] [blame] | 476 | |
Anthony Zhou | 5d1bb05 | 2017-03-03 16:23:08 +0800 | [diff] [blame] | 477 | int32_t tegra_soc_prepare_system_reset(void) |
Varun Wadekar | 38020c9 | 2016-01-07 14:36:12 -0800 | [diff] [blame] | 478 | { |
Anthony Zhou | 0e07e45 | 2017-07-26 17:16:54 +0800 | [diff] [blame] | 479 | mce_enter_ccplex_state((uint32_t)TEGRA_ARI_MISC_CCPLEX_SHUTDOWN_REBOOT); |
Varun Wadekar | 38020c9 | 2016-01-07 14:36:12 -0800 | [diff] [blame] | 480 | |
| 481 | return PSCI_E_SUCCESS; |
| 482 | } |