1 /* 2 * Copyright (c) 2018-2020, Arm Limited and Contributors. All rights reserved. 3 * Copyright (c) 2018-2022, Xilinx, Inc. All rights reserved. 4 * Copyright (c) 2022-2023, 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 <common/fdt_fixup.h> 16 #include <common/fdt_wrappers.h> 17 #include <drivers/arm/dcc.h> 18 #include <drivers/arm/pl011.h> 19 #include <drivers/console.h> 20 #include <lib/mmio.h> 21 #include <lib/xlat_tables/xlat_tables_v2.h> 22 #include <libfdt.h> 23 #include <plat/common/platform.h> 24 #include <plat_arm.h> 25 26 #include <plat_private.h> 27 #include <plat_startup.h> 28 #include <pm_api_sys.h> 29 #include <pm_client.h> 30 #include <pm_ipi.h> 31 #include <versal_net_def.h> 32 33 static entry_point_info_t bl32_image_ep_info; 34 static entry_point_info_t bl33_image_ep_info; 35 36 /* 37 * Return a pointer to the 'entry_point_info' structure of the next image for 38 * the security state specified. BL33 corresponds to the non-secure image type 39 * while BL32 corresponds to the secure image type. A NULL pointer is returned 40 * if the image does not exist. 41 */ 42 entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type) 43 { 44 assert(sec_state_is_valid(type)); 45 46 if (type == NON_SECURE) { 47 return &bl33_image_ep_info; 48 } 49 50 return &bl32_image_ep_info; 51 } 52 53 /* 54 * Set the build time defaults,if we can't find any config data. 55 */ 56 static inline void bl31_set_default_config(void) 57 { 58 bl32_image_ep_info.pc = BL32_BASE; 59 bl32_image_ep_info.spsr = arm_get_spsr_for_bl32_entry(); 60 bl33_image_ep_info.pc = plat_get_ns_image_entrypoint(); 61 bl33_image_ep_info.spsr = SPSR_64(MODE_EL2, MODE_SP_ELX, 62 DISABLE_ALL_EXCEPTIONS); 63 } 64 65 /* 66 * Perform any BL31 specific platform actions. Here is an opportunity to copy 67 * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before they 68 * are lost (potentially). This needs to be done before the MMU is initialized 69 * so that the memory layout can be used while creating page tables. 70 */ 71 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, 72 u_register_t arg2, u_register_t arg3) 73 { 74 uint32_t uart_clock; 75 int32_t rc; 76 #if !(TFA_NO_PM) 77 uint64_t tfa_handoff_addr, buff[HANDOFF_PARAMS_MAX_SIZE] = {0}; 78 uint32_t payload[PAYLOAD_ARG_CNT], max_size = HANDOFF_PARAMS_MAX_SIZE; 79 enum pm_ret_status ret_status; 80 #endif /* !(TFA_NO_PM) */ 81 82 board_detection(); 83 84 switch (platform_id) { 85 case VERSAL_NET_SPP: 86 cpu_clock = 1000000; 87 uart_clock = 1000000; 88 break; 89 case VERSAL_NET_EMU: 90 cpu_clock = 3660000; 91 uart_clock = 25000000; 92 break; 93 case VERSAL_NET_QEMU: 94 /* Random values now */ 95 cpu_clock = 100000000; 96 uart_clock = 25000000; 97 break; 98 case VERSAL_NET_SILICON: 99 cpu_clock = 100000000; 100 uart_clock = 100000000; 101 break; 102 default: 103 panic(); 104 } 105 106 if (VERSAL_NET_CONSOLE_IS(pl011_0) || VERSAL_NET_CONSOLE_IS(pl011_1)) { 107 static console_t versal_net_runtime_console; 108 109 /* Initialize the console to provide early debug support */ 110 rc = console_pl011_register(VERSAL_NET_UART_BASE, uart_clock, 111 VERSAL_NET_UART_BAUDRATE, 112 &versal_net_runtime_console); 113 if (rc == 0) { 114 panic(); 115 } 116 117 console_set_scope(&versal_net_runtime_console, CONSOLE_FLAG_BOOT | 118 CONSOLE_FLAG_RUNTIME); 119 } else if (VERSAL_NET_CONSOLE_IS(dcc)) { 120 /* Initialize the dcc console for debug. 121 * dcc is over jtag and does not configures uart0 or uart1. 122 */ 123 rc = console_dcc_register(); 124 if (rc == 0) { 125 panic(); 126 } 127 } 128 129 NOTICE("TF-A running on %s %d.%d\n", board_name_decode(), 130 platform_version / 10U, platform_version % 10U); 131 132 /* Initialize the platform config for future decision making */ 133 versal_net_config_setup(); 134 135 /* 136 * Do initial security configuration to allow DRAM/device access. On 137 * Base VERSAL_NET only DRAM security is programmable (via TrustZone), but 138 * other platforms might have more programmable security devices 139 * present. 140 */ 141 142 /* Populate common information for BL32 and BL33 */ 143 SET_PARAM_HEAD(&bl32_image_ep_info, PARAM_EP, VERSION_1, 0); 144 SET_SECURITY_STATE(bl32_image_ep_info.h.attr, SECURE); 145 SET_PARAM_HEAD(&bl33_image_ep_info, PARAM_EP, VERSION_1, 0); 146 SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE); 147 #if !(TFA_NO_PM) 148 PM_PACK_PAYLOAD4(payload, LOADER_MODULE_ID, 1, PM_LOAD_GET_HANDOFF_PARAMS, 149 (uintptr_t)buff >> 32U, (uintptr_t)buff, max_size); 150 151 ret_status = pm_ipi_send_sync(primary_proc, payload, NULL, 0); 152 if (ret_status == PM_RET_SUCCESS) { 153 enum xbl_handoff xbl_ret; 154 155 tfa_handoff_addr = (uintptr_t)&buff; 156 157 xbl_ret = xbl_handover(&bl32_image_ep_info, &bl33_image_ep_info, 158 tfa_handoff_addr); 159 if (xbl_ret != XBL_HANDOFF_SUCCESS) { 160 ERROR("BL31: PLM to TF-A handover failed %u\n", xbl_ret); 161 panic(); 162 } 163 164 INFO("BL31: PLM to TF-A handover success\n"); 165 } else { 166 INFO("BL31: setting up default configs\n"); 167 168 bl31_set_default_config(); 169 } 170 #else 171 bl31_set_default_config(); 172 #endif /* !(TFA_NO_PM) */ 173 174 NOTICE("BL31: Secure code at 0x%lx\n", bl32_image_ep_info.pc); 175 NOTICE("BL31: Non secure code at 0x%lx\n", bl33_image_ep_info.pc); 176 } 177 178 static versal_intr_info_type_el3_t type_el3_interrupt_table[MAX_INTR_EL3]; 179 180 int request_intr_type_el3(uint32_t id, interrupt_type_handler_t handler) 181 { 182 static uint32_t index; 183 uint32_t i; 184 185 /* Validate 'handler' and 'id' parameters */ 186 if (handler == NULL || index >= MAX_INTR_EL3) { 187 return -EINVAL; 188 } 189 190 /* Check if a handler has already been registered */ 191 for (i = 0; i < index; i++) { 192 if (id == type_el3_interrupt_table[i].id) { 193 return -EALREADY; 194 } 195 } 196 197 type_el3_interrupt_table[index].id = id; 198 type_el3_interrupt_table[index].handler = handler; 199 200 index++; 201 202 return 0; 203 } 204 205 static uint64_t rdo_el3_interrupt_handler(uint32_t id, uint32_t flags, 206 void *handle, void *cookie) 207 { 208 uint32_t intr_id; 209 uint32_t i; 210 interrupt_type_handler_t handler = NULL; 211 212 intr_id = plat_ic_get_pending_interrupt_id(); 213 214 for (i = 0; i < MAX_INTR_EL3; i++) { 215 if (intr_id == type_el3_interrupt_table[i].id) { 216 handler = type_el3_interrupt_table[i].handler; 217 } 218 } 219 220 if (handler != NULL) { 221 handler(intr_id, flags, handle, cookie); 222 } 223 224 return 0; 225 } 226 227 void bl31_platform_setup(void) 228 { 229 /* Initialize the gic cpu and distributor interfaces */ 230 plat_versal_net_gic_driver_init(); 231 plat_versal_net_gic_init(); 232 } 233 234 void bl31_plat_runtime_setup(void) 235 { 236 uint64_t flags = 0; 237 int32_t rc; 238 239 set_interrupt_rm_flag(flags, NON_SECURE); 240 rc = register_interrupt_type_handler(INTR_TYPE_EL3, 241 rdo_el3_interrupt_handler, flags); 242 if (rc != 0) { 243 panic(); 244 } 245 } 246 247 /* 248 * Perform the very early platform specific architectural setup here. 249 */ 250 void bl31_plat_arch_setup(void) 251 { 252 const mmap_region_t bl_regions[] = { 253 MAP_REGION_FLAT(BL31_BASE, BL31_END - BL31_BASE, 254 MT_MEMORY | MT_RW | MT_SECURE), 255 MAP_REGION_FLAT(BL_CODE_BASE, BL_CODE_END - BL_CODE_BASE, 256 MT_CODE | MT_SECURE), 257 MAP_REGION_FLAT(BL_RO_DATA_BASE, BL_RO_DATA_END - BL_RO_DATA_BASE, 258 MT_RO_DATA | MT_SECURE), 259 {0} 260 }; 261 262 setup_page_tables(bl_regions, plat_versal_net_get_mmap()); 263 enable_mmu(0); 264 } 265