1 /* 2 * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved. 3 * Copyright (c) 2020, NVIDIA Corporation. All rights reserved. 4 * 5 * SPDX-License-Identifier: BSD-3-Clause 6 */ 7 8 #include <assert.h> 9 #include <errno.h> 10 #include <stddef.h> 11 #include <string.h> 12 13 #include <platform_def.h> 14 15 #include <arch.h> 16 #include <arch_helpers.h> 17 #include <bl31/bl31.h> 18 #include <common/bl_common.h> 19 #include <common/debug.h> 20 #include <cortex_a53.h> 21 #include <cortex_a57.h> 22 #include <denver.h> 23 #include <drivers/console.h> 24 #include <lib/mmio.h> 25 #include <lib/utils.h> 26 #include <lib/utils_def.h> 27 #include <plat/common/platform.h> 28 29 #include <memctrl.h> 30 #include <profiler.h> 31 #include <smmu.h> 32 #include <tegra_def.h> 33 #include <tegra_platform.h> 34 #include <tegra_private.h> 35 36 /* length of Trusty's input parameters (in bytes) */ 37 #define TRUSTY_PARAMS_LEN_BYTES (4096*2) 38 39 /******************************************************************************* 40 * Declarations of linker defined symbols which will help us find the layout 41 * of trusted SRAM 42 ******************************************************************************/ 43 IMPORT_SYM(uint64_t, __RW_START__, BL31_RW_START); 44 45 extern uint64_t tegra_bl31_phys_base; 46 47 static entry_point_info_t bl33_image_ep_info, bl32_image_ep_info; 48 static plat_params_from_bl2_t plat_bl31_params_from_bl2 = { 49 .tzdram_size = TZDRAM_SIZE 50 }; 51 #ifdef SPD_trusty 52 static aapcs64_params_t bl32_args; 53 #endif 54 55 /******************************************************************************* 56 * This variable holds the non-secure image entry address 57 ******************************************************************************/ 58 extern uint64_t ns_image_entrypoint; 59 60 /******************************************************************************* 61 * Return a pointer to the 'entry_point_info' structure of the next image for 62 * security state specified. BL33 corresponds to the non-secure image type 63 * while BL32 corresponds to the secure image type. 64 ******************************************************************************/ 65 entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type) 66 { 67 entry_point_info_t *ep = NULL; 68 69 /* return BL32 entry point info if it is valid */ 70 if (type == NON_SECURE) { 71 ep = &bl33_image_ep_info; 72 } else if ((type == SECURE) && (bl32_image_ep_info.pc != 0U)) { 73 ep = &bl32_image_ep_info; 74 } 75 76 return ep; 77 } 78 79 /******************************************************************************* 80 * Return a pointer to the 'plat_params_from_bl2_t' structure. The BL2 image 81 * passes this platform specific information. 82 ******************************************************************************/ 83 plat_params_from_bl2_t *bl31_get_plat_params(void) 84 { 85 return &plat_bl31_params_from_bl2; 86 } 87 88 /******************************************************************************* 89 * Perform any BL31 specific platform actions. Populate the BL33 and BL32 image 90 * info. 91 ******************************************************************************/ 92 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, 93 u_register_t arg2, u_register_t arg3) 94 { 95 struct tegra_bl31_params *arg_from_bl2 = (struct tegra_bl31_params *) arg0; 96 plat_params_from_bl2_t *plat_params = (plat_params_from_bl2_t *)arg1; 97 int32_t ret; 98 99 /* 100 * For RESET_TO_BL31 systems, BL31 is the first bootloader to run so 101 * there's no argument to relay from a previous bootloader. Platforms 102 * might use custom ways to get arguments. 103 */ 104 if (arg_from_bl2 == NULL) { 105 arg_from_bl2 = plat_get_bl31_params(); 106 } 107 if (plat_params == NULL) { 108 plat_params = plat_get_bl31_plat_params(); 109 } 110 111 /* 112 * Copy BL3-3, BL3-2 entry point information. 113 * They are stored in Secure RAM, in BL2's address space. 114 */ 115 assert(arg_from_bl2 != NULL); 116 assert(arg_from_bl2->bl33_ep_info != NULL); 117 bl33_image_ep_info = *arg_from_bl2->bl33_ep_info; 118 119 if (arg_from_bl2->bl32_ep_info != NULL) { 120 bl32_image_ep_info = *arg_from_bl2->bl32_ep_info; 121 #ifdef SPD_trusty 122 /* save BL32 boot parameters */ 123 memcpy(&bl32_args, &arg_from_bl2->bl32_ep_info->args, sizeof(bl32_args)); 124 #endif 125 } 126 127 /* 128 * Parse platform specific parameters 129 */ 130 assert(plat_params != NULL); 131 plat_bl31_params_from_bl2.tzdram_base = plat_params->tzdram_base; 132 plat_bl31_params_from_bl2.tzdram_size = plat_params->tzdram_size; 133 plat_bl31_params_from_bl2.uart_id = plat_params->uart_id; 134 plat_bl31_params_from_bl2.l2_ecc_parity_prot_dis = plat_params->l2_ecc_parity_prot_dis; 135 plat_bl31_params_from_bl2.sc7entry_fw_size = plat_params->sc7entry_fw_size; 136 plat_bl31_params_from_bl2.sc7entry_fw_base = plat_params->sc7entry_fw_base; 137 138 /* 139 * It is very important that we run either from TZDRAM or TZSRAM base. 140 * Add an explicit check here. 141 */ 142 if ((plat_bl31_params_from_bl2.tzdram_base != (uint64_t)BL31_BASE) && 143 (TEGRA_TZRAM_BASE != BL31_BASE)) { 144 panic(); 145 } 146 147 /* 148 * Enable console for the platform 149 */ 150 plat_enable_console(plat_params->uart_id); 151 152 /* 153 * The previous bootloader passes the base address of the shared memory 154 * location to store the boot profiler logs. Sanity check the 155 * address and initialise the profiler library, if it looks ok. 156 */ 157 ret = bl31_check_ns_address(plat_params->boot_profiler_shmem_base, 158 PROFILER_SIZE_BYTES); 159 if (ret == (int32_t)0) { 160 161 /* store the membase for the profiler lib */ 162 plat_bl31_params_from_bl2.boot_profiler_shmem_base = 163 plat_params->boot_profiler_shmem_base; 164 165 /* initialise the profiler library */ 166 boot_profiler_init(plat_params->boot_profiler_shmem_base, 167 TEGRA_TMRUS_BASE); 168 } 169 170 /* 171 * Add timestamp for platform early setup entry. 172 */ 173 boot_profiler_add_record("[TF] early setup entry"); 174 175 /* 176 * Initialize delay timer 177 */ 178 tegra_delay_timer_init(); 179 180 /* Early platform setup for Tegra SoCs */ 181 plat_early_platform_setup(); 182 183 /* 184 * Add timestamp for platform early setup exit. 185 */ 186 boot_profiler_add_record("[TF] early setup exit"); 187 188 INFO("BL3-1: Boot CPU: %s Processor [%lx]\n", 189 (((read_midr() >> MIDR_IMPL_SHIFT) & MIDR_IMPL_MASK) 190 == DENVER_IMPL) ? "Denver" : "ARM", read_mpidr()); 191 } 192 193 #ifdef SPD_trusty 194 void plat_trusty_set_boot_args(aapcs64_params_t *args) 195 { 196 /* 197 * arg0 = TZDRAM aperture available for BL32 198 * arg1 = BL32 boot params 199 * arg2 = EKS Blob Length 200 * arg3 = Boot Profiler Carveout Base 201 */ 202 args->arg0 = bl32_args.arg0; 203 args->arg1 = bl32_args.arg2; 204 205 /* update EKS size */ 206 args->arg2 = bl32_args.arg4; 207 208 /* Profiler Carveout Base */ 209 args->arg3 = bl32_args.arg5; 210 } 211 #endif 212 213 /******************************************************************************* 214 * Initialize the gic, configure the SCR. 215 ******************************************************************************/ 216 void bl31_platform_setup(void) 217 { 218 /* 219 * Add timestamp for platform setup entry. 220 */ 221 boot_profiler_add_record("[TF] plat setup entry"); 222 223 /* Initialize the gic cpu and distributor interfaces */ 224 plat_gic_setup(); 225 226 /* 227 * Setup secondary CPU POR infrastructure. 228 */ 229 plat_secondary_setup(); 230 231 /* 232 * Initial Memory Controller configuration. 233 */ 234 tegra_memctrl_setup(); 235 236 /* 237 * Late setup handler to allow platforms to performs additional 238 * functionality. 239 * This handler gets called with MMU enabled. 240 */ 241 plat_late_platform_setup(); 242 243 /* 244 * Add timestamp for platform setup exit. 245 */ 246 boot_profiler_add_record("[TF] plat setup exit"); 247 248 INFO("BL3-1: Tegra platform setup complete\n"); 249 } 250 251 /******************************************************************************* 252 * Perform any BL3-1 platform runtime setup prior to BL3-1 cold boot exit 253 ******************************************************************************/ 254 void bl31_plat_runtime_setup(void) 255 { 256 /* 257 * During cold boot, it is observed that the arbitration 258 * bit is set in the Memory controller leading to false 259 * error interrupts in the non-secure world. To avoid 260 * this, clean the interrupt status register before 261 * booting into the non-secure world 262 */ 263 tegra_memctrl_clear_pending_interrupts(); 264 265 /* 266 * During boot, USB3 and flash media (SDMMC/SATA) devices need 267 * access to IRAM. Because these clients connect to the MC and 268 * do not have a direct path to the IRAM, the MC implements AHB 269 * redirection during boot to allow path to IRAM. In this mode 270 * accesses to a programmed memory address aperture are directed 271 * to the AHB bus, allowing access to the IRAM. This mode must be 272 * disabled before we jump to the non-secure world. 273 */ 274 tegra_memctrl_disable_ahb_redirection(); 275 276 #if defined(TEGRA_SMMU0_BASE) 277 /* 278 * Verify the integrity of the previously configured SMMU(s) settings 279 */ 280 tegra_smmu_verify(); 281 #endif 282 283 /* 284 * Add final timestamp before exiting BL31. 285 */ 286 boot_profiler_add_record("[TF] bl31 exit"); 287 boot_profiler_deinit(); 288 } 289 290 /******************************************************************************* 291 * Perform the very early platform specific architectural setup here. At the 292 * moment this only intializes the mmu in a quick and dirty way. 293 ******************************************************************************/ 294 void bl31_plat_arch_setup(void) 295 { 296 uint64_t rw_start = BL31_RW_START; 297 uint64_t rw_size = BL_END - BL31_RW_START; 298 uint64_t rodata_start = BL_RO_DATA_BASE; 299 uint64_t rodata_size = BL_RO_DATA_END - BL_RO_DATA_BASE; 300 uint64_t code_base = BL_CODE_BASE; 301 uint64_t code_size = BL_CODE_END - BL_CODE_BASE; 302 const mmap_region_t *plat_mmio_map = NULL; 303 const plat_params_from_bl2_t *params_from_bl2 = bl31_get_plat_params(); 304 305 /* 306 * Add timestamp for arch setup entry. 307 */ 308 boot_profiler_add_record("[TF] arch setup entry"); 309 310 /* add MMIO space */ 311 plat_mmio_map = plat_get_mmio_map(); 312 if (plat_mmio_map != NULL) { 313 mmap_add(plat_mmio_map); 314 } else { 315 WARN("MMIO map not available\n"); 316 } 317 318 /* add memory regions */ 319 mmap_add_region(rw_start, rw_start, 320 rw_size, 321 MT_MEMORY | MT_RW | MT_SECURE); 322 mmap_add_region(rodata_start, rodata_start, 323 rodata_size, 324 MT_RO_DATA | MT_SECURE); 325 mmap_add_region(code_base, code_base, 326 code_size, 327 MT_CODE | MT_SECURE); 328 329 /* map TZDRAM used by BL31 as coherent memory */ 330 if (TEGRA_TZRAM_BASE == tegra_bl31_phys_base) { 331 mmap_add_region(params_from_bl2->tzdram_base, 332 params_from_bl2->tzdram_base, 333 BL31_SIZE, 334 MT_DEVICE | MT_RW | MT_SECURE); 335 } 336 337 /* set up translation tables */ 338 init_xlat_tables(); 339 340 /* enable the MMU */ 341 enable_mmu_el3(0); 342 343 /* 344 * Add timestamp for arch setup exit. 345 */ 346 boot_profiler_add_record("[TF] arch setup exit"); 347 348 INFO("BL3-1: Tegra: MMU enabled\n"); 349 } 350 351 /******************************************************************************* 352 * Check if the given NS DRAM range is valid 353 ******************************************************************************/ 354 int32_t bl31_check_ns_address(uint64_t base, uint64_t size_in_bytes) 355 { 356 uint64_t end = base + size_in_bytes - U(1); 357 358 /* 359 * Sanity check the input values 360 */ 361 if ((base == 0U) || (size_in_bytes == 0U)) { 362 ERROR("NS address 0x%llx (%lld bytes) is invalid\n", 363 base, size_in_bytes); 364 return -EINVAL; 365 } 366 367 /* 368 * Check if the NS DRAM address is valid 369 */ 370 if ((base < TEGRA_DRAM_BASE) || (base >= TEGRA_DRAM_END) || 371 (end > TEGRA_DRAM_END)) { 372 373 ERROR("NS address 0x%llx is out-of-bounds!\n", base); 374 return -EFAULT; 375 } 376 377 /* 378 * TZDRAM aperture contains the BL31 and BL32 images, so we need 379 * to check if the NS DRAM range overlaps the TZDRAM aperture. 380 */ 381 if ((base < (uint64_t)TZDRAM_END) && (end > tegra_bl31_phys_base)) { 382 ERROR("NS address 0x%llx overlaps TZDRAM!\n", base); 383 return -ENOTSUP; 384 } 385 386 /* valid NS address */ 387 return 0; 388 } 389