1 /* 2 * Copyright (c) 2018-2024, Arm Limited and Contributors. All rights reserved. 3 * Copyright (c) 2018-2022, 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 #include <errno.h> 11 12 #include <bl31/bl31.h> 13 #include <common/bl_common.h> 14 #include <common/debug.h> 15 #include <lib/mmio.h> 16 #include <lib/xlat_tables/xlat_tables_v2.h> 17 #include <plat/common/platform.h> 18 #include <plat_arm.h> 19 #include <plat_console.h> 20 #include <plat_clkfunc.h> 21 22 #include <plat_fdt.h> 23 #include <plat_private.h> 24 #include <plat_startup.h> 25 #include <pm_api_sys.h> 26 #include <pm_client.h> 27 #include <pm_ipi.h> 28 #include <versal_net_def.h> 29 30 static entry_point_info_t bl32_image_ep_info; 31 static entry_point_info_t bl33_image_ep_info; 32 33 /* 34 * Return a pointer to the 'entry_point_info' structure of the next image for 35 * the security state specified. BL33 corresponds to the non-secure image type 36 * while BL32 corresponds to the secure image type. A NULL pointer is returned 37 * if the image does not exist. 38 */ 39 entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type) 40 { 41 assert(sec_state_is_valid(type)); 42 43 if (type == NON_SECURE) { 44 return &bl33_image_ep_info; 45 } 46 47 return &bl32_image_ep_info; 48 } 49 50 /* 51 * Set the build time defaults,if we can't find any config data. 52 */ 53 static inline void bl31_set_default_config(void) 54 { 55 bl32_image_ep_info.pc = BL32_BASE; 56 bl32_image_ep_info.spsr = arm_get_spsr_for_bl32_entry(); 57 bl33_image_ep_info.pc = plat_get_ns_image_entrypoint(); 58 bl33_image_ep_info.spsr = (uint32_t)SPSR_64(MODE_EL2, MODE_SP_ELX, 59 DISABLE_ALL_EXCEPTIONS); 60 } 61 62 /* Define read and write function for clusterbusqos register */ 63 DEFINE_RENAME_SYSREG_RW_FUNCS(cluster_bus_qos, S3_0_C15_C4_4) 64 65 static void versal_net_setup_qos(void) 66 { 67 int ret; 68 69 ret = read_cluster_bus_qos(); 70 INFO("BL31: default cluster bus qos: 0x%x\n", ret); 71 write_cluster_bus_qos(0); 72 ret = read_cluster_bus_qos(); 73 INFO("BL31: cluster bus qos written: 0x%x\n", ret); 74 } 75 76 /* 77 * Perform any BL31 specific platform actions. Here is an opportunity to copy 78 * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before they 79 * are lost (potentially). This needs to be done before the MMU is initialized 80 * so that the memory layout can be used while creating page tables. 81 */ 82 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, 83 u_register_t arg2, u_register_t arg3) 84 { 85 (void)arg0; 86 (void)arg1; 87 (void)arg2; 88 (void)arg3; 89 90 #if !(TFA_NO_PM) 91 uint64_t tfa_handoff_addr, buff[HANDOFF_PARAMS_MAX_SIZE] = {0}; 92 uint32_t payload[PAYLOAD_ARG_CNT], max_size = HANDOFF_PARAMS_MAX_SIZE; 93 enum pm_ret_status ret_status; 94 #endif /* !(TFA_NO_PM) */ 95 96 board_detection(); 97 98 switch (platform_id) { 99 case VERSAL_NET_SPP: 100 cpu_clock = 1000000; 101 break; 102 case VERSAL_NET_EMU: 103 cpu_clock = 3660000; 104 break; 105 case VERSAL_NET_QEMU: 106 /* Random values now */ 107 cpu_clock = 100000000; 108 break; 109 case VERSAL_NET_SILICON: 110 cpu_clock = 100000000; 111 break; 112 default: 113 panic(); 114 } 115 116 syscnt_freq_config_setup(); 117 118 set_cnt_freq(); 119 120 /* Initialize the platform config for future decision making */ 121 versal_net_config_setup(); 122 123 setup_console(); 124 125 NOTICE("TF-A running on %s %d.%d\n", board_name_decode(), 126 platform_version / 10U, platform_version % 10U); 127 128 versal_net_setup_qos(); 129 130 131 /* 132 * Do initial security configuration to allow DRAM/device access. On 133 * Base VERSAL_NET only DRAM security is programmable (via TrustZone), but 134 * other platforms might have more programmable security devices 135 * present. 136 */ 137 138 /* Populate common information for BL32 and BL33 */ 139 SET_PARAM_HEAD(&bl32_image_ep_info, PARAM_EP, VERSION_1, 0); 140 SET_SECURITY_STATE(bl32_image_ep_info.h.attr, SECURE); 141 SET_PARAM_HEAD(&bl33_image_ep_info, PARAM_EP, VERSION_1, 0); 142 SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE); 143 #if !(TFA_NO_PM) 144 PM_PACK_PAYLOAD4(payload, LOADER_MODULE_ID, 1U, PM_LOAD_GET_HANDOFF_PARAMS, 145 (uintptr_t)buff >> 32U, (uintptr_t)buff, max_size); 146 147 ret_status = pm_ipi_send_sync(primary_proc, payload, NULL, 0); 148 if (ret_status == PM_RET_SUCCESS) { 149 enum xbl_handoff xbl_ret; 150 151 tfa_handoff_addr = (uintptr_t)&buff; 152 153 xbl_ret = xbl_handover(&bl32_image_ep_info, &bl33_image_ep_info, 154 tfa_handoff_addr); 155 if (xbl_ret != XBL_HANDOFF_SUCCESS) { 156 ERROR("BL31: PLM to TF-A handover failed %u\n", xbl_ret); 157 panic(); 158 } 159 160 INFO("BL31: PLM to TF-A handover success\n"); 161 162 } else { 163 INFO("BL31: setting up default configs\n"); 164 165 bl31_set_default_config(); 166 } 167 #else 168 bl31_set_default_config(); 169 #endif /* !(TFA_NO_PM) */ 170 171 NOTICE("BL31: Secure code at 0x%lx\n", bl32_image_ep_info.pc); 172 NOTICE("BL31: Non secure code at 0x%lx\n", bl33_image_ep_info.pc); 173 } 174 175 static versal_intr_info_type_el3_t type_el3_interrupt_table[MAX_INTR_EL3]; 176 177 int request_intr_type_el3(uint32_t id, interrupt_type_handler_t handler) 178 { 179 static uint32_t index; 180 uint32_t i; 181 int32_t ret = 0; 182 183 /* Validate 'handler' and 'id' parameters */ 184 if ((handler == NULL) || (index >= MAX_INTR_EL3)) { 185 ret = -EINVAL; 186 goto exit_label; 187 } 188 189 /* Check if a handler has already been registered */ 190 for (i = 0; i < index; i++) { 191 if (id == type_el3_interrupt_table[i].id) { 192 ret = -EALREADY; 193 goto exit_label; 194 } 195 } 196 197 type_el3_interrupt_table[index].id = id; 198 type_el3_interrupt_table[index].handler = handler; 199 200 index++; 201 202 exit_label: 203 return ret; 204 } 205 206 #if SDEI_SUPPORT 207 static int rdo_el3_interrupt_handler(uint32_t id, uint32_t flags, 208 void *handle, void *cookie) 209 #else 210 static uint64_t rdo_el3_interrupt_handler(uint32_t id, uint32_t flags, 211 void *handle, void *cookie) 212 #endif 213 { 214 uint32_t intr_id; 215 uint32_t i; 216 interrupt_type_handler_t handler = NULL; 217 218 #if SDEI_SUPPORT 219 /* when SDEI_SUPPORT is enabled, ehf_el3_interrupt_handler 220 * reads the interrupt id prior to calling the 221 * rdo_el3_interrupt_handler and passes that id to the 222 * handler. 223 */ 224 intr_id = id; 225 #else 226 intr_id = plat_ic_get_pending_interrupt_id(); 227 #endif 228 229 for (i = 0; i < MAX_INTR_EL3; i++) { 230 if (intr_id == type_el3_interrupt_table[i].id) { 231 handler = type_el3_interrupt_table[i].handler; 232 } 233 } 234 235 if (handler != NULL) { 236 (void)handler(intr_id, flags, handle, cookie); 237 } 238 239 return 0; 240 } 241 242 void bl31_platform_setup(void) 243 { 244 prepare_dtb(); 245 246 /* Initialize the gic cpu and distributor interfaces */ 247 plat_arm_gic_driver_init(); 248 plat_arm_gic_init(); 249 } 250 251 void bl31_plat_runtime_setup(void) 252 { 253 #if !SDEI_SUPPORT 254 uint64_t flags = 0; 255 int32_t rc; 256 257 set_interrupt_rm_flag(flags, NON_SECURE); 258 rc = register_interrupt_type_handler(INTR_TYPE_EL3, 259 rdo_el3_interrupt_handler, flags); 260 if (rc != 0) { 261 panic(); 262 } 263 #else 264 ehf_register_priority_handler(PLAT_IPI_PRI, rdo_el3_interrupt_handler); 265 #endif 266 } 267 268 /* 269 * Perform the very early platform specific architectural setup here. 270 */ 271 void bl31_plat_arch_setup(void) 272 { 273 const mmap_region_t bl_regions[] = { 274 #if (defined(XILINX_OF_BOARD_DTB_ADDR) && !IS_TFA_IN_OCM(BL31_BASE)) 275 MAP_REGION_FLAT(XILINX_OF_BOARD_DTB_ADDR, XILINX_OF_BOARD_DTB_MAX_SIZE, 276 MT_MEMORY | MT_RW | MT_NS), 277 #endif 278 MAP_REGION_FLAT(BL31_BASE, BL31_END - BL31_BASE, 279 MT_MEMORY | MT_RW | MT_SECURE), 280 MAP_REGION_FLAT(BL_CODE_BASE, BL_CODE_END - BL_CODE_BASE, 281 MT_CODE | MT_SECURE), 282 MAP_REGION_FLAT(BL_RO_DATA_BASE, BL_RO_DATA_END - BL_RO_DATA_BASE, 283 MT_RO_DATA | MT_SECURE), 284 {0} 285 }; 286 287 setup_page_tables(bl_regions, plat_get_mmap()); 288 enable_mmu(0); 289 } 290