Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2022, Xilinx, Inc. All rights reserved. |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 3 | * Copyright (c) 2022-2023, Advanced Micro Devices, Inc. All rights reserved. |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 4 | * |
| 5 | * SPDX-License-Identifier: BSD-3-Clause |
| 6 | */ |
| 7 | |
| 8 | #include <assert.h> |
| 9 | |
| 10 | #include <common/debug.h> |
| 11 | #include <lib/mmio.h> |
| 12 | #include <lib/psci/psci.h> |
| 13 | #include <plat/arm/common/plat_arm.h> |
| 14 | #include <plat/common/platform.h> |
| 15 | #include <plat_arm.h> |
| 16 | |
Jay Buddhabhatti | 10e71e4 | 2023-06-19 05:08:54 -0700 | [diff] [blame^] | 17 | #include <drivers/delay_timer.h> |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 18 | #include <plat_private.h> |
| 19 | #include "pm_api_sys.h" |
| 20 | #include "pm_client.h" |
| 21 | #include <pm_common.h> |
Jay Buddhabhatti | 10e71e4 | 2023-06-19 05:08:54 -0700 | [diff] [blame^] | 22 | #include "pm_ipi.h" |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 23 | #include "pm_svc_main.h" |
| 24 | #include "versal_net_def.h" |
| 25 | |
| 26 | static uintptr_t versal_net_sec_entry; |
| 27 | |
| 28 | static int32_t versal_net_pwr_domain_on(u_register_t mpidr) |
| 29 | { |
| 30 | uint32_t cpu_id = plat_core_pos_by_mpidr(mpidr); |
| 31 | const struct pm_proc *proc; |
| 32 | |
| 33 | VERBOSE("%s: mpidr: 0x%lx, cpuid: %x\n", |
| 34 | __func__, mpidr, cpu_id); |
| 35 | |
| 36 | if (cpu_id == -1) { |
| 37 | return PSCI_E_INTERN_FAIL; |
| 38 | } |
| 39 | |
| 40 | proc = pm_get_proc(cpu_id); |
| 41 | if (!proc) { |
| 42 | return PSCI_E_INTERN_FAIL; |
| 43 | } |
| 44 | |
| 45 | pm_req_wakeup(proc->node_id, (versal_net_sec_entry & 0xFFFFFFFFU) | 0x1U, |
| 46 | versal_net_sec_entry >> 32, 0, 0); |
| 47 | |
| 48 | /* Clear power down request */ |
| 49 | pm_client_wakeup(proc); |
| 50 | |
| 51 | return PSCI_E_SUCCESS; |
| 52 | } |
| 53 | |
| 54 | /** |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 55 | * versal_net_pwr_domain_off() - This function performs actions to turn off |
| 56 | * core. |
| 57 | * @target_state: Targeted state. |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 58 | * |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 59 | */ |
| 60 | static void versal_net_pwr_domain_off(const psci_power_state_t *target_state) |
| 61 | { |
| 62 | uint32_t cpu_id = plat_my_core_pos(); |
| 63 | const struct pm_proc *proc = pm_get_proc(cpu_id); |
| 64 | |
| 65 | for (size_t i = 0; i <= PLAT_MAX_PWR_LVL; i++) { |
| 66 | VERBOSE("%s: target_state->pwr_domain_state[%lu]=%x\n", |
| 67 | __func__, i, target_state->pwr_domain_state[i]); |
| 68 | } |
| 69 | |
| 70 | /* Prevent interrupts from spuriously waking up this cpu */ |
Jay Buddhabhatti | b7bb1ed | 2023-10-05 21:55:28 -0700 | [diff] [blame] | 71 | plat_arm_gic_cpuif_disable(); |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 72 | |
| 73 | /* |
| 74 | * Send request to PMC to power down the appropriate APU CPU |
| 75 | * core. |
| 76 | * According to PSCI specification, CPU_off function does not |
| 77 | * have resume address and CPU core can only be woken up |
| 78 | * invoking CPU_on function, during which resume address will |
| 79 | * be set. |
| 80 | */ |
| 81 | pm_self_suspend(proc->node_id, MAX_LATENCY, PM_STATE_CPU_IDLE, 0, |
| 82 | SECURE_FLAG); |
| 83 | } |
| 84 | |
| 85 | /** |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 86 | * versal_net_system_reset() - This function sends the reset request to firmware |
| 87 | * for the system to reset. This function does not |
| 88 | * return. |
| 89 | * |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 90 | */ |
| 91 | static void __dead2 versal_net_system_reset(void) |
| 92 | { |
Jay Buddhabhatti | 10e71e4 | 2023-06-19 05:08:54 -0700 | [diff] [blame^] | 93 | uint32_t ret, timeout = 10000U; |
| 94 | |
| 95 | request_cpu_pwrdwn(); |
| 96 | |
| 97 | /* |
| 98 | * Send the system reset request to the firmware if power down request |
| 99 | * is not received from firmware. |
| 100 | */ |
| 101 | if (!pwrdwn_req_received) { |
| 102 | (void)pm_system_shutdown(XPM_SHUTDOWN_TYPE_RESET, |
| 103 | pm_get_shutdown_scope(), SECURE_FLAG); |
| 104 | |
| 105 | /* |
| 106 | * Wait for system shutdown request completed and idle callback |
| 107 | * not received. |
| 108 | */ |
| 109 | do { |
| 110 | ret = ipi_mb_enquire_status(primary_proc->ipi->local_ipi_id, |
| 111 | primary_proc->ipi->remote_ipi_id); |
| 112 | udelay(100); |
| 113 | timeout--; |
| 114 | } while ((ret != IPI_MB_STATUS_RECV_PENDING) && (timeout > 0U)); |
| 115 | } |
| 116 | |
| 117 | (void)psci_cpu_off(); |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 118 | |
| 119 | while (1) { |
| 120 | wfi(); |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | /** |
| 125 | * versal_net_pwr_domain_suspend() - This function sends request to PMC to suspend |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 126 | * core. |
| 127 | * @target_state: Targeted state. |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 128 | * |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 129 | */ |
| 130 | static void versal_net_pwr_domain_suspend(const psci_power_state_t *target_state) |
| 131 | { |
| 132 | uint32_t state; |
| 133 | uint32_t cpu_id = plat_my_core_pos(); |
| 134 | const struct pm_proc *proc = pm_get_proc(cpu_id); |
| 135 | |
| 136 | for (size_t i = 0; i <= PLAT_MAX_PWR_LVL; i++) { |
| 137 | VERBOSE("%s: target_state->pwr_domain_state[%lu]=%x\n", |
| 138 | __func__, i, target_state->pwr_domain_state[i]); |
| 139 | } |
| 140 | |
Jay Buddhabhatti | b7bb1ed | 2023-10-05 21:55:28 -0700 | [diff] [blame] | 141 | plat_arm_gic_cpuif_disable(); |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 142 | |
| 143 | if (target_state->pwr_domain_state[1] > PLAT_MAX_RET_STATE) { |
Jay Buddhabhatti | b7bb1ed | 2023-10-05 21:55:28 -0700 | [diff] [blame] | 144 | plat_arm_gic_save(); |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 145 | } |
| 146 | |
| 147 | state = target_state->pwr_domain_state[1] > PLAT_MAX_RET_STATE ? |
| 148 | PM_STATE_SUSPEND_TO_RAM : PM_STATE_CPU_IDLE; |
| 149 | |
| 150 | /* Send request to PMC to suspend this core */ |
| 151 | pm_self_suspend(proc->node_id, MAX_LATENCY, state, versal_net_sec_entry, |
| 152 | SECURE_FLAG); |
| 153 | |
| 154 | /* TODO: disable coherency */ |
| 155 | } |
| 156 | |
| 157 | static void versal_net_pwr_domain_on_finish(const psci_power_state_t *target_state) |
| 158 | { |
| 159 | (void)target_state; |
| 160 | |
| 161 | /* Enable the gic cpu interface */ |
Jay Buddhabhatti | b7bb1ed | 2023-10-05 21:55:28 -0700 | [diff] [blame] | 162 | plat_arm_gic_pcpu_init(); |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 163 | |
| 164 | /* Program the gic per-cpu distributor or re-distributor interface */ |
Jay Buddhabhatti | b7bb1ed | 2023-10-05 21:55:28 -0700 | [diff] [blame] | 165 | plat_arm_gic_cpuif_enable(); |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | /** |
| 169 | * versal_net_pwr_domain_suspend_finish() - This function performs actions to finish |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 170 | * suspend procedure. |
| 171 | * @target_state: Targeted state. |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 172 | * |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 173 | */ |
| 174 | static void versal_net_pwr_domain_suspend_finish(const psci_power_state_t *target_state) |
| 175 | { |
| 176 | uint32_t cpu_id = plat_my_core_pos(); |
| 177 | const struct pm_proc *proc = pm_get_proc(cpu_id); |
| 178 | |
| 179 | for (size_t i = 0; i <= PLAT_MAX_PWR_LVL; i++) |
| 180 | VERBOSE("%s: target_state->pwr_domain_state[%lu]=%x\n", |
| 181 | __func__, i, target_state->pwr_domain_state[i]); |
| 182 | |
| 183 | /* Clear the APU power control register for this cpu */ |
| 184 | pm_client_wakeup(proc); |
| 185 | |
| 186 | /* TODO: enable coherency */ |
| 187 | |
| 188 | /* APU was turned off, so restore GIC context */ |
| 189 | if (target_state->pwr_domain_state[1] > PLAT_MAX_RET_STATE) { |
Jay Buddhabhatti | b7bb1ed | 2023-10-05 21:55:28 -0700 | [diff] [blame] | 190 | plat_arm_gic_resume(); |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 191 | } |
| 192 | |
Jay Buddhabhatti | b7bb1ed | 2023-10-05 21:55:28 -0700 | [diff] [blame] | 193 | plat_arm_gic_cpuif_enable(); |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 194 | } |
| 195 | |
| 196 | /** |
| 197 | * versal_net_system_off() - This function sends the system off request |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 198 | * to firmware. This function does not return. |
| 199 | * |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 200 | */ |
| 201 | static void __dead2 versal_net_system_off(void) |
| 202 | { |
| 203 | /* Send the power down request to the PMC */ |
| 204 | pm_system_shutdown(XPM_SHUTDOWN_TYPE_SHUTDOWN, |
| 205 | pm_get_shutdown_scope(), SECURE_FLAG); |
| 206 | |
| 207 | while (1) { |
| 208 | wfi(); |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | /** |
| 213 | * versal_net_validate_power_state() - This function ensures that the power state |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 214 | * parameter in request is valid. |
| 215 | * @power_state: Power state of core. |
| 216 | * @req_state: Requested state. |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 217 | * |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 218 | * Return: Returns status, either PSCI_E_SUCCESS or reason. |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 219 | * |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 220 | */ |
| 221 | static int32_t versal_net_validate_power_state(unsigned int power_state, |
| 222 | psci_power_state_t *req_state) |
| 223 | { |
| 224 | VERBOSE("%s: power_state: 0x%x\n", __func__, power_state); |
| 225 | |
| 226 | int32_t pstate = psci_get_pstate_type(power_state); |
| 227 | |
| 228 | assert(req_state); |
| 229 | |
| 230 | /* Sanity check the requested state */ |
| 231 | if (pstate == PSTATE_TYPE_STANDBY) { |
| 232 | req_state->pwr_domain_state[MPIDR_AFFLVL0] = PLAT_MAX_RET_STATE; |
| 233 | } else { |
Jay Buddhabhatti | 6cd94be | 2023-03-22 22:44:16 -0700 | [diff] [blame] | 234 | req_state->pwr_domain_state[MPIDR_AFFLVL0] = PLAT_MAX_OFF_STATE; |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 235 | } |
| 236 | |
| 237 | /* We expect the 'state id' to be zero */ |
| 238 | if (psci_get_pstate_id(power_state)) { |
| 239 | return PSCI_E_INVALID_PARAMS; |
| 240 | } |
| 241 | |
| 242 | return PSCI_E_SUCCESS; |
| 243 | } |
| 244 | |
| 245 | /** |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 246 | * versal_net_get_sys_suspend_power_state() - Get power state for system |
| 247 | * suspend. |
| 248 | * @req_state: Requested state. |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 249 | * |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 250 | */ |
| 251 | static void versal_net_get_sys_suspend_power_state(psci_power_state_t *req_state) |
| 252 | { |
Jay Buddhabhatti | 7c5adef | 2022-12-29 21:58:35 -0800 | [diff] [blame] | 253 | uint64_t i; |
| 254 | |
| 255 | for (i = MPIDR_AFFLVL0; i <= PLAT_MAX_PWR_LVL; i++) |
| 256 | req_state->pwr_domain_state[i] = PLAT_MAX_OFF_STATE; |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 257 | } |
| 258 | |
| 259 | static const struct plat_psci_ops versal_net_nopmc_psci_ops = { |
| 260 | .pwr_domain_on = versal_net_pwr_domain_on, |
| 261 | .pwr_domain_off = versal_net_pwr_domain_off, |
| 262 | .pwr_domain_on_finish = versal_net_pwr_domain_on_finish, |
| 263 | .pwr_domain_suspend = versal_net_pwr_domain_suspend, |
| 264 | .pwr_domain_suspend_finish = versal_net_pwr_domain_suspend_finish, |
| 265 | .system_off = versal_net_system_off, |
| 266 | .system_reset = versal_net_system_reset, |
| 267 | .validate_power_state = versal_net_validate_power_state, |
| 268 | .get_sys_suspend_power_state = versal_net_get_sys_suspend_power_state, |
| 269 | }; |
| 270 | |
| 271 | /******************************************************************************* |
| 272 | * Export the platform specific power ops. |
| 273 | ******************************************************************************/ |
| 274 | int32_t plat_setup_psci_ops(uintptr_t sec_entrypoint, |
| 275 | const struct plat_psci_ops **psci_ops) |
| 276 | { |
| 277 | versal_net_sec_entry = sec_entrypoint; |
| 278 | |
| 279 | VERBOSE("Setting up entry point %lx\n", versal_net_sec_entry); |
| 280 | |
| 281 | *psci_ops = &versal_net_nopmc_psci_ops; |
| 282 | |
| 283 | return 0; |
| 284 | } |
| 285 | |
| 286 | int32_t sip_svc_setup_init(void) |
| 287 | { |
| 288 | return pm_setup(); |
| 289 | } |
| 290 | |
| 291 | uint64_t smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3, uint64_t x4, |
| 292 | void *cookie, void *handle, uint64_t flags) |
| 293 | { |
| 294 | return pm_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle, flags); |
| 295 | } |