1 /* 2 * Copyright (c) 2018-2025, Arm Limited and Contributors. All rights reserved. 3 * Copyright (c) 2021-2022, Xilinx, Inc. All rights reserved. 4 * Copyright (c) 2022-2025, Advanced Micro Devices, Inc. All rights reserved. 5 * 6 * SPDX-License-Identifier: BSD-3-Clause 7 */ 8 9 #include <assert.h> 10 11 #include <common/debug.h> 12 #include <common/runtime_svc.h> 13 #include <lib/mmio.h> 14 #include <lib/psci/psci.h> 15 #include <plat/arm/common/plat_arm.h> 16 #include <plat/common/platform.h> 17 #include <plat_arm.h> 18 19 #include <plat_private.h> 20 #include <pm_defs.h> 21 22 static uintptr_t versal_net_sec_entry; 23 24 static void zynqmp_cpu_standby(plat_local_state_t cpu_state) 25 { 26 dsb(); 27 wfi(); 28 } 29 30 static int32_t zynqmp_nopmu_pwr_domain_on(u_register_t mpidr) 31 { 32 uint32_t cpu_id = plat_core_pos_by_mpidr(mpidr); 33 uint32_t cpu = cpu_id % PLATFORM_CORE_COUNT_PER_CLUSTER; 34 uint32_t cluster = cpu_id / PLATFORM_CORE_COUNT_PER_CLUSTER; 35 uintptr_t apu_cluster_base = 0, apu_pcli_base, apu_pcli_cluster = 0; 36 uintptr_t rst_apu_cluster = PSX_CRF + RST_APU0_OFFSET + (cluster * 0x4); 37 38 VERBOSE("%s: mpidr: 0x%lx, cpuid: %x, cpu: %x, cluster: %x\n", 39 __func__, mpidr, cpu_id, cpu, cluster); 40 41 if (cpu_id == -1) { 42 return PSCI_E_INTERN_FAIL; 43 } 44 45 if (platform_id == VERSAL_NET_SPP && cluster > 1) { 46 panic(); 47 } 48 49 if (cluster > 3) { 50 panic(); 51 } 52 53 apu_pcli_cluster = APU_PCLI + APU_PCLI_CLUSTER_OFFSET + (cluster * APU_PCLI_CLUSTER_STEP); 54 apu_cluster_base = APU_CLUSTER0 + (cluster * APU_CLUSTER_STEP); 55 56 /* Enable clock */ 57 mmio_setbits_32(PSX_CRF + ACPU0_CLK_CTRL + (cluster * 0x4), ACPU_CLK_CTRL_CLKACT); 58 59 /* Enable cluster states */ 60 mmio_setbits_32(apu_pcli_cluster + PCLI_PSTATE_OFFSET, PCLI_PSTATE_VAL_SET); 61 mmio_setbits_32(apu_pcli_cluster + PCLI_PREQ_OFFSET, PREQ_CHANGE_REQUEST); 62 63 /* assert core reset */ 64 mmio_setbits_32(rst_apu_cluster, ((RST_APU_COLD_RESET|RST_APU_WARN_RESET) << cpu)); 65 66 /* program RVBAR */ 67 mmio_write_32(apu_cluster_base + APU_RVBAR_L_0 + (cpu << 3), 68 (uint32_t)versal_net_sec_entry); 69 mmio_write_32(apu_cluster_base + APU_RVBAR_H_0 + (cpu << 3), 70 versal_net_sec_entry >> 32); 71 72 /* de-assert core reset */ 73 mmio_clrbits_32(rst_apu_cluster, ((RST_APU_COLD_RESET|RST_APU_WARN_RESET) << cpu)); 74 75 /* clear cluster resets */ 76 mmio_clrbits_32(rst_apu_cluster, RST_APU_CLUSTER_WARM_RESET); 77 mmio_clrbits_32(rst_apu_cluster, RST_APU_CLUSTER_COLD_RESET); 78 79 apu_pcli_base = APU_PCLI + (APU_PCLI_CPU_STEP * cpu) + 80 (APU_PCLI_CLUSTER_CPU_STEP * cluster); 81 82 mmio_write_32(apu_pcli_base + PCLI_PSTATE_OFFSET, PCLI_PSTATE_VAL_CLEAR); 83 mmio_write_32(apu_pcli_base + PCLI_PREQ_OFFSET, PREQ_CHANGE_REQUEST); 84 85 return PSCI_E_SUCCESS; 86 } 87 88 static void zynqmp_nopmu_pwr_domain_off(const psci_power_state_t *target_state) 89 { 90 } 91 92 static void __dead2 zynqmp_nopmu_system_reset(void) 93 { 94 while (1) 95 wfi(); 96 } 97 98 static int32_t zynqmp_validate_ns_entrypoint(uint64_t ns_entrypoint) 99 { 100 return PSCI_E_SUCCESS; 101 } 102 103 static void zynqmp_pwr_domain_suspend(const psci_power_state_t *target_state) 104 { 105 } 106 107 static void zynqmp_pwr_domain_on_finish(const psci_power_state_t *target_state) 108 { 109 } 110 111 static void zynqmp_pwr_domain_suspend_finish(const psci_power_state_t *target_state) 112 { 113 } 114 115 static void __dead2 zynqmp_system_off(void) 116 { 117 while (1) 118 wfi(); 119 } 120 121 static int32_t zynqmp_validate_power_state(uint32_t power_state, psci_power_state_t *req_state) 122 { 123 return PSCI_E_SUCCESS; 124 } 125 126 static void zynqmp_get_sys_suspend_power_state(psci_power_state_t *req_state) 127 { 128 req_state->pwr_domain_state[PSCI_CPU_PWR_LVL] = PLAT_MAX_OFF_STATE; 129 req_state->pwr_domain_state[1] = PLAT_MAX_OFF_STATE; 130 } 131 132 static const struct plat_psci_ops versal_net_nopmc_psci_ops = { 133 .cpu_standby = zynqmp_cpu_standby, 134 .pwr_domain_on = zynqmp_nopmu_pwr_domain_on, 135 .pwr_domain_off = zynqmp_nopmu_pwr_domain_off, 136 .system_reset = zynqmp_nopmu_system_reset, 137 .validate_ns_entrypoint = zynqmp_validate_ns_entrypoint, 138 .pwr_domain_suspend = zynqmp_pwr_domain_suspend, 139 .pwr_domain_on_finish = zynqmp_pwr_domain_on_finish, 140 .pwr_domain_suspend_finish = zynqmp_pwr_domain_suspend_finish, 141 .system_off = zynqmp_system_off, 142 .validate_power_state = zynqmp_validate_power_state, 143 .get_sys_suspend_power_state = zynqmp_get_sys_suspend_power_state, 144 }; 145 146 /******************************************************************************* 147 * Export the platform specific power ops. 148 ******************************************************************************/ 149 int32_t plat_setup_psci_ops(uintptr_t sec_entrypoint, 150 const struct plat_psci_ops **psci_ops) 151 { 152 versal_net_sec_entry = sec_entrypoint; 153 154 VERBOSE("Setting up entry point %lx\n", versal_net_sec_entry); 155 156 *psci_ops = &versal_net_nopmc_psci_ops; 157 158 return 0; 159 } 160 161 int sip_svc_setup_init(void) 162 { 163 return 0; 164 } 165 166 static int32_t no_pm_ioctl(uint32_t device_id, uint32_t ioctl_id, 167 uint32_t arg1, uint32_t arg2) 168 { 169 VERBOSE("%s: ioctl_id: %x, arg1: %x\n", __func__, ioctl_id, arg1); 170 if (ioctl_id == IOCTL_OSPI_MUX_SELECT) { 171 mmio_write_32(SLCR_OSPI_QSPI_IOU_AXI_MUX_SEL, arg1); 172 return 0; 173 } 174 return PM_RET_ERROR_IOCTL_NOT_SUPPORTED; 175 } 176 177 static uint64_t no_pm_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3, 178 uint64_t x4, void *cookie, void *handle, uint64_t flags) 179 { 180 int32_t ret; 181 uint32_t arg[4], api_id; 182 183 arg[0] = (uint32_t)x1; 184 arg[1] = (uint32_t)(x1 >> 32); 185 arg[2] = (uint32_t)x2; 186 arg[3] = (uint32_t)(x2 >> 32); 187 188 api_id = smc_fid & FUNCID_NUM_MASK; 189 VERBOSE("%s: smc_fid: %x, api_id=0x%x\n", __func__, smc_fid, api_id); 190 191 switch (api_id) { 192 case PM_IOCTL: 193 { 194 ret = no_pm_ioctl(arg[0], arg[1], arg[2], arg[3]); 195 SMC_RET1(handle, (uint64_t)ret); 196 } 197 case PM_GET_CHIPID: 198 { 199 uint32_t idcode, version; 200 201 idcode = mmio_read_32(PMC_TAP); 202 version = mmio_read_32(PMC_TAP_VERSION); 203 SMC_RET2(handle, ((uint64_t)idcode << 32), version); 204 } 205 default: 206 WARN("Unimplemented PM Service Call: 0x%x\n", smc_fid); 207 SMC_RET1(handle, SMC_UNK); 208 } 209 } 210 211 uint64_t smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3, uint64_t x4, 212 void *cookie, void *handle, uint64_t flags) 213 { 214 return no_pm_handler(smc_fid, x1, x2, x3, x4, cookie, handle, flags); 215 } 216