1 /* 2 * Copyright (c) 2020-2024, Arm Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 #include <errno.h> 9 #include <inttypes.h> 10 #include <stdint.h> 11 #include <string.h> 12 13 #include <arch_helpers.h> 14 #include <arch/aarch64/arch_features.h> 15 #include <bl31/bl31.h> 16 #include <bl31/interrupt_mgmt.h> 17 #include <common/debug.h> 18 #include <common/runtime_svc.h> 19 #include <common/tbbr/tbbr_img_def.h> 20 #include <lib/el3_runtime/context_mgmt.h> 21 #include <lib/fconf/fconf.h> 22 #include <lib/fconf/fconf_dyn_cfg_getter.h> 23 #include <lib/smccc.h> 24 #include <lib/spinlock.h> 25 #include <lib/utils.h> 26 #include <lib/xlat_tables/xlat_tables_v2.h> 27 #include <plat/common/common_def.h> 28 #include <plat/common/platform.h> 29 #include <platform_def.h> 30 #include <services/el3_spmd_logical_sp.h> 31 #include <services/ffa_svc.h> 32 #include <services/spmc_svc.h> 33 #include <services/spmd_svc.h> 34 #include <smccc_helpers.h> 35 #include "spmd_private.h" 36 37 /******************************************************************************* 38 * SPM Core context information. 39 ******************************************************************************/ 40 static spmd_spm_core_context_t spm_core_context[PLATFORM_CORE_COUNT]; 41 42 /******************************************************************************* 43 * SPM Core attribute information is read from its manifest if the SPMC is not 44 * at EL3. Else, it is populated from the SPMC directly. 45 ******************************************************************************/ 46 static spmc_manifest_attribute_t spmc_attrs; 47 48 /******************************************************************************* 49 * SPM Core entry point information. Discovered on the primary core and reused 50 * on secondary cores. 51 ******************************************************************************/ 52 static entry_point_info_t *spmc_ep_info; 53 54 /******************************************************************************* 55 * SPM Core context on current CPU get helper. 56 ******************************************************************************/ 57 spmd_spm_core_context_t *spmd_get_context(void) 58 { 59 return &spm_core_context[plat_my_core_pos()]; 60 } 61 62 /******************************************************************************* 63 * SPM Core ID getter. 64 ******************************************************************************/ 65 uint16_t spmd_spmc_id_get(void) 66 { 67 return spmc_attrs.spmc_id; 68 } 69 70 /******************************************************************************* 71 * Static function declaration. 72 ******************************************************************************/ 73 static int32_t spmd_init(void); 74 static int spmd_spmc_init(void *pm_addr); 75 76 static uint64_t spmd_smc_forward(uint32_t smc_fid, 77 bool secure_origin, 78 uint64_t x1, 79 uint64_t x2, 80 uint64_t x3, 81 uint64_t x4, 82 void *cookie, 83 void *handle, 84 uint64_t flags); 85 86 /****************************************************************************** 87 * Builds an SPMD to SPMC direct message request. 88 *****************************************************************************/ 89 void spmd_build_spmc_message(gp_regs_t *gpregs, uint8_t target_func, 90 unsigned long long message) 91 { 92 write_ctx_reg(gpregs, CTX_GPREG_X0, FFA_MSG_SEND_DIRECT_REQ_SMC32); 93 write_ctx_reg(gpregs, CTX_GPREG_X1, 94 (SPMD_DIRECT_MSG_ENDPOINT_ID << FFA_DIRECT_MSG_SOURCE_SHIFT) | 95 spmd_spmc_id_get()); 96 write_ctx_reg(gpregs, CTX_GPREG_X2, BIT(31) | target_func); 97 write_ctx_reg(gpregs, CTX_GPREG_X3, message); 98 99 /* Zero out x4-x7 for the direct request emitted towards the SPMC. */ 100 write_ctx_reg(gpregs, CTX_GPREG_X4, 0); 101 write_ctx_reg(gpregs, CTX_GPREG_X5, 0); 102 write_ctx_reg(gpregs, CTX_GPREG_X6, 0); 103 write_ctx_reg(gpregs, CTX_GPREG_X7, 0); 104 } 105 106 107 /******************************************************************************* 108 * This function takes an SPMC context pointer and performs a synchronous 109 * SPMC entry. 110 ******************************************************************************/ 111 uint64_t spmd_spm_core_sync_entry(spmd_spm_core_context_t *spmc_ctx) 112 { 113 uint64_t rc; 114 115 assert(spmc_ctx != NULL); 116 117 cm_set_context(&(spmc_ctx->cpu_ctx), SECURE); 118 119 /* Restore the context assigned above */ 120 #if SPMD_SPM_AT_SEL2 121 cm_el2_sysregs_context_restore(SECURE); 122 #else 123 cm_el1_sysregs_context_restore(SECURE); 124 #endif 125 cm_set_next_eret_context(SECURE); 126 127 /* Enter SPMC */ 128 rc = spmd_spm_core_enter(&spmc_ctx->c_rt_ctx); 129 130 /* Save secure state */ 131 #if SPMD_SPM_AT_SEL2 132 cm_el2_sysregs_context_save(SECURE); 133 #else 134 cm_el1_sysregs_context_save(SECURE); 135 #endif 136 137 return rc; 138 } 139 140 /******************************************************************************* 141 * This function returns to the place where spmd_spm_core_sync_entry() was 142 * called originally. 143 ******************************************************************************/ 144 __dead2 void spmd_spm_core_sync_exit(uint64_t rc) 145 { 146 spmd_spm_core_context_t *ctx = spmd_get_context(); 147 148 /* Get current CPU context from SPMC context */ 149 assert(cm_get_context(SECURE) == &(ctx->cpu_ctx)); 150 151 /* 152 * The SPMD must have initiated the original request through a 153 * synchronous entry into SPMC. Jump back to the original C runtime 154 * context with the value of rc in x0; 155 */ 156 spmd_spm_core_exit(ctx->c_rt_ctx, rc); 157 158 panic(); 159 } 160 161 /******************************************************************************* 162 * Jump to the SPM Core for the first time. 163 ******************************************************************************/ 164 static int32_t spmd_init(void) 165 { 166 spmd_spm_core_context_t *ctx = spmd_get_context(); 167 uint64_t rc; 168 169 VERBOSE("SPM Core init start.\n"); 170 171 /* Primary boot core enters the SPMC for initialization. */ 172 ctx->state = SPMC_STATE_ON_PENDING; 173 174 rc = spmd_spm_core_sync_entry(ctx); 175 if (rc != 0ULL) { 176 ERROR("SPMC initialisation failed 0x%" PRIx64 "\n", rc); 177 return 0; 178 } 179 180 ctx->state = SPMC_STATE_ON; 181 182 VERBOSE("SPM Core init end.\n"); 183 184 spmd_logical_sp_set_spmc_initialized(); 185 rc = spmd_logical_sp_init(); 186 if (rc != 0) { 187 WARN("SPMD Logical partitions failed init.\n"); 188 } 189 190 return 1; 191 } 192 193 /******************************************************************************* 194 * spmd_secure_interrupt_handler 195 * Enter the SPMC for further handling of the secure interrupt by the SPMC 196 * itself or a Secure Partition. 197 ******************************************************************************/ 198 static uint64_t spmd_secure_interrupt_handler(uint32_t id, 199 uint32_t flags, 200 void *handle, 201 void *cookie) 202 { 203 spmd_spm_core_context_t *ctx = spmd_get_context(); 204 gp_regs_t *gpregs = get_gpregs_ctx(&ctx->cpu_ctx); 205 int64_t rc; 206 207 /* Sanity check the security state when the exception was generated */ 208 assert(get_interrupt_src_ss(flags) == NON_SECURE); 209 210 /* Sanity check the pointer to this cpu's context */ 211 assert(handle == cm_get_context(NON_SECURE)); 212 213 /* Save the non-secure context before entering SPMC */ 214 #if SPMD_SPM_AT_SEL2 215 cm_el2_sysregs_context_save(NON_SECURE); 216 #else 217 cm_el1_sysregs_context_save(NON_SECURE); 218 #endif 219 220 /* Convey the event to the SPMC through the FFA_INTERRUPT interface. */ 221 write_ctx_reg(gpregs, CTX_GPREG_X0, FFA_INTERRUPT); 222 write_ctx_reg(gpregs, CTX_GPREG_X1, 0); 223 write_ctx_reg(gpregs, CTX_GPREG_X2, 0); 224 write_ctx_reg(gpregs, CTX_GPREG_X3, 0); 225 write_ctx_reg(gpregs, CTX_GPREG_X4, 0); 226 write_ctx_reg(gpregs, CTX_GPREG_X5, 0); 227 write_ctx_reg(gpregs, CTX_GPREG_X6, 0); 228 write_ctx_reg(gpregs, CTX_GPREG_X7, 0); 229 230 /* Mark current core as handling a secure interrupt. */ 231 ctx->secure_interrupt_ongoing = true; 232 233 rc = spmd_spm_core_sync_entry(ctx); 234 if (rc != 0ULL) { 235 ERROR("%s failed (%" PRId64 ") on CPU%u\n", __func__, rc, plat_my_core_pos()); 236 } 237 238 ctx->secure_interrupt_ongoing = false; 239 240 #if SPMD_SPM_AT_SEL2 241 cm_el2_sysregs_context_restore(NON_SECURE); 242 #else 243 cm_el1_sysregs_context_restore(NON_SECURE); 244 #endif 245 cm_set_next_eret_context(NON_SECURE); 246 247 SMC_RET0(&ctx->cpu_ctx); 248 } 249 250 #if (EL3_EXCEPTION_HANDLING == 0) 251 /******************************************************************************* 252 * spmd_group0_interrupt_handler_nwd 253 * Group0 secure interrupt in the normal world are trapped to EL3. Delegate the 254 * handling of the interrupt to the platform handler, and return only upon 255 * successfully handling the Group0 interrupt. 256 ******************************************************************************/ 257 static uint64_t spmd_group0_interrupt_handler_nwd(uint32_t id, 258 uint32_t flags, 259 void *handle, 260 void *cookie) 261 { 262 uint32_t intid; 263 264 /* Sanity check the security state when the exception was generated. */ 265 assert(get_interrupt_src_ss(flags) == NON_SECURE); 266 267 /* Sanity check the pointer to this cpu's context. */ 268 assert(handle == cm_get_context(NON_SECURE)); 269 270 assert(id == INTR_ID_UNAVAILABLE); 271 272 assert(plat_ic_get_pending_interrupt_type() == INTR_TYPE_EL3); 273 274 intid = plat_ic_acknowledge_interrupt(); 275 276 if (plat_spmd_handle_group0_interrupt(intid) < 0) { 277 ERROR("Group0 interrupt %u not handled\n", intid); 278 panic(); 279 } 280 281 /* Deactivate the corresponding Group0 interrupt. */ 282 plat_ic_end_of_interrupt(intid); 283 284 return 0U; 285 } 286 #endif 287 288 /******************************************************************************* 289 * spmd_handle_group0_intr_swd 290 * SPMC delegates handling of Group0 secure interrupt to EL3 firmware using 291 * FFA_EL3_INTR_HANDLE SMC call. Further, SPMD delegates the handling of the 292 * interrupt to the platform handler, and returns only upon successfully 293 * handling the Group0 interrupt. 294 ******************************************************************************/ 295 static uint64_t spmd_handle_group0_intr_swd(void *handle) 296 { 297 uint32_t intid; 298 299 /* Sanity check the pointer to this cpu's context */ 300 assert(handle == cm_get_context(SECURE)); 301 302 assert(plat_ic_get_pending_interrupt_type() == INTR_TYPE_EL3); 303 304 intid = plat_ic_acknowledge_interrupt(); 305 306 /* 307 * TODO: Currently due to a limitation in SPMD implementation, the 308 * platform handler is expected to not delegate handling to NWd while 309 * processing Group0 secure interrupt. 310 */ 311 if (plat_spmd_handle_group0_interrupt(intid) < 0) { 312 /* Group0 interrupt was not handled by the platform. */ 313 ERROR("Group0 interrupt %u not handled\n", intid); 314 panic(); 315 } 316 317 /* Deactivate the corresponding Group0 interrupt. */ 318 plat_ic_end_of_interrupt(intid); 319 320 /* Return success. */ 321 SMC_RET8(handle, FFA_SUCCESS_SMC32, FFA_PARAM_MBZ, FFA_PARAM_MBZ, 322 FFA_PARAM_MBZ, FFA_PARAM_MBZ, FFA_PARAM_MBZ, FFA_PARAM_MBZ, 323 FFA_PARAM_MBZ); 324 } 325 326 #if ENABLE_RME && SPMD_SPM_AT_SEL2 && !RESET_TO_BL31 327 static int spmd_dynamic_map_mem(uintptr_t base_addr, size_t size, 328 unsigned int attr, uintptr_t *align_addr, 329 size_t *align_size) 330 { 331 uintptr_t base_addr_align; 332 size_t mapped_size_align; 333 int rc; 334 335 /* Page aligned address and size if necessary */ 336 base_addr_align = page_align(base_addr, DOWN); 337 mapped_size_align = page_align(size, UP); 338 339 if ((base_addr != base_addr_align) && 340 (size == mapped_size_align)) { 341 mapped_size_align += PAGE_SIZE; 342 } 343 344 /* 345 * Map dynamically given region with its aligned base address and 346 * size 347 */ 348 rc = mmap_add_dynamic_region((unsigned long long)base_addr_align, 349 base_addr_align, 350 mapped_size_align, 351 attr); 352 if (rc == 0) { 353 *align_addr = base_addr_align; 354 *align_size = mapped_size_align; 355 } 356 357 return rc; 358 } 359 360 static void spmd_do_sec_cpy(uintptr_t root_base_addr, uintptr_t sec_base_addr, 361 size_t size) 362 { 363 uintptr_t root_base_addr_align, sec_base_addr_align; 364 size_t root_mapped_size_align, sec_mapped_size_align; 365 int rc; 366 367 assert(root_base_addr != 0UL); 368 assert(sec_base_addr != 0UL); 369 assert(size != 0UL); 370 371 /* Map the memory with required attributes */ 372 rc = spmd_dynamic_map_mem(root_base_addr, size, MT_RO_DATA | MT_ROOT, 373 &root_base_addr_align, 374 &root_mapped_size_align); 375 if (rc != 0) { 376 ERROR("%s %s %lu (%d)\n", "Error while mapping", "root region", 377 root_base_addr, rc); 378 panic(); 379 } 380 381 rc = spmd_dynamic_map_mem(sec_base_addr, size, MT_RW_DATA | MT_SECURE, 382 &sec_base_addr_align, &sec_mapped_size_align); 383 if (rc != 0) { 384 ERROR("%s %s %lu (%d)\n", "Error while mapping", 385 "secure region", sec_base_addr, rc); 386 panic(); 387 } 388 389 /* Do copy operation */ 390 (void)memcpy((void *)sec_base_addr, (void *)root_base_addr, size); 391 392 /* Unmap root memory region */ 393 rc = mmap_remove_dynamic_region(root_base_addr_align, 394 root_mapped_size_align); 395 if (rc != 0) { 396 ERROR("%s %s %lu (%d)\n", "Error while unmapping", 397 "root region", root_base_addr_align, rc); 398 panic(); 399 } 400 401 /* Unmap secure memory region */ 402 rc = mmap_remove_dynamic_region(sec_base_addr_align, 403 sec_mapped_size_align); 404 if (rc != 0) { 405 ERROR("%s %s %lu (%d)\n", "Error while unmapping", 406 "secure region", sec_base_addr_align, rc); 407 panic(); 408 } 409 } 410 #endif /* ENABLE_RME && SPMD_SPM_AT_SEL2 && !RESET_TO_BL31 */ 411 412 /******************************************************************************* 413 * Loads SPMC manifest and inits SPMC. 414 ******************************************************************************/ 415 static int spmd_spmc_init(void *pm_addr) 416 { 417 cpu_context_t *cpu_ctx; 418 unsigned int core_id; 419 uint32_t ep_attr, flags; 420 int rc; 421 const struct dyn_cfg_dtb_info_t *image_info __unused; 422 423 /* Load the SPM Core manifest */ 424 rc = plat_spm_core_manifest_load(&spmc_attrs, pm_addr); 425 if (rc != 0) { 426 WARN("No or invalid SPM Core manifest image provided by BL2\n"); 427 return rc; 428 } 429 430 /* 431 * Ensure that the SPM Core version is compatible with the SPM 432 * Dispatcher version. 433 */ 434 if ((spmc_attrs.major_version != FFA_VERSION_MAJOR) || 435 (spmc_attrs.minor_version > FFA_VERSION_MINOR)) { 436 WARN("Unsupported FFA version (%u.%u)\n", 437 spmc_attrs.major_version, spmc_attrs.minor_version); 438 return -EINVAL; 439 } 440 441 VERBOSE("FFA version (%u.%u)\n", spmc_attrs.major_version, 442 spmc_attrs.minor_version); 443 444 VERBOSE("SPM Core run time EL%x.\n", 445 SPMD_SPM_AT_SEL2 ? MODE_EL2 : MODE_EL1); 446 447 /* Validate the SPMC ID, Ensure high bit is set */ 448 if (((spmc_attrs.spmc_id >> SPMC_SECURE_ID_SHIFT) & 449 SPMC_SECURE_ID_MASK) == 0U) { 450 WARN("Invalid ID (0x%x) for SPMC.\n", spmc_attrs.spmc_id); 451 return -EINVAL; 452 } 453 454 /* Validate the SPM Core execution state */ 455 if ((spmc_attrs.exec_state != MODE_RW_64) && 456 (spmc_attrs.exec_state != MODE_RW_32)) { 457 WARN("Unsupported %s%x.\n", "SPM Core execution state 0x", 458 spmc_attrs.exec_state); 459 return -EINVAL; 460 } 461 462 VERBOSE("%s%x.\n", "SPM Core execution state 0x", 463 spmc_attrs.exec_state); 464 465 #if SPMD_SPM_AT_SEL2 466 /* Ensure manifest has not requested AArch32 state in S-EL2 */ 467 if (spmc_attrs.exec_state == MODE_RW_32) { 468 WARN("AArch32 state at S-EL2 is not supported.\n"); 469 return -EINVAL; 470 } 471 472 /* 473 * Check if S-EL2 is supported on this system if S-EL2 474 * is required for SPM 475 */ 476 if (!is_feat_sel2_supported()) { 477 WARN("SPM Core run time S-EL2 is not supported.\n"); 478 return -EINVAL; 479 } 480 #endif /* SPMD_SPM_AT_SEL2 */ 481 482 /* Initialise an entrypoint to set up the CPU context */ 483 ep_attr = SECURE | EP_ST_ENABLE; 484 if ((read_sctlr_el3() & SCTLR_EE_BIT) != 0ULL) { 485 ep_attr |= EP_EE_BIG; 486 } 487 488 SET_PARAM_HEAD(spmc_ep_info, PARAM_EP, VERSION_1, ep_attr); 489 490 /* 491 * Populate SPSR for SPM Core based upon validated parameters from the 492 * manifest. 493 */ 494 if (spmc_attrs.exec_state == MODE_RW_32) { 495 spmc_ep_info->spsr = SPSR_MODE32(MODE32_svc, SPSR_T_ARM, 496 SPSR_E_LITTLE, 497 DAIF_FIQ_BIT | 498 DAIF_IRQ_BIT | 499 DAIF_ABT_BIT); 500 } else { 501 502 #if SPMD_SPM_AT_SEL2 503 static const uint32_t runtime_el = MODE_EL2; 504 #else 505 static const uint32_t runtime_el = MODE_EL1; 506 #endif 507 spmc_ep_info->spsr = SPSR_64(runtime_el, 508 MODE_SP_ELX, 509 DISABLE_ALL_EXCEPTIONS); 510 } 511 512 #if ENABLE_RME && SPMD_SPM_AT_SEL2 && !RESET_TO_BL31 513 image_info = FCONF_GET_PROPERTY(dyn_cfg, dtb, TOS_FW_CONFIG_ID); 514 assert(image_info != NULL); 515 516 if ((image_info->config_addr == 0UL) || 517 (image_info->secondary_config_addr == 0UL) || 518 (image_info->config_max_size == 0UL)) { 519 return -EINVAL; 520 } 521 522 /* Copy manifest from root->secure region */ 523 spmd_do_sec_cpy(image_info->config_addr, 524 image_info->secondary_config_addr, 525 image_info->config_max_size); 526 527 /* Update ep info of BL32 */ 528 assert(spmc_ep_info != NULL); 529 spmc_ep_info->args.arg0 = image_info->secondary_config_addr; 530 #endif /* ENABLE_RME && SPMD_SPM_AT_SEL2 && !RESET_TO_BL31 */ 531 532 /* Set an initial SPMC context state for all cores. */ 533 for (core_id = 0U; core_id < PLATFORM_CORE_COUNT; core_id++) { 534 spm_core_context[core_id].state = SPMC_STATE_OFF; 535 536 /* Setup an initial cpu context for the SPMC. */ 537 cpu_ctx = &spm_core_context[core_id].cpu_ctx; 538 cm_setup_context(cpu_ctx, spmc_ep_info); 539 540 /* 541 * Pass the core linear ID to the SPMC through x4. 542 * (TF-A implementation defined behavior helping 543 * a legacy TOS migration to adopt FF-A). 544 */ 545 write_ctx_reg(get_gpregs_ctx(cpu_ctx), CTX_GPREG_X4, core_id); 546 } 547 548 /* Register power management hooks with PSCI */ 549 psci_register_spd_pm_hook(&spmd_pm); 550 551 /* Register init function for deferred init. */ 552 bl31_register_bl32_init(&spmd_init); 553 554 INFO("SPM Core setup done.\n"); 555 556 /* 557 * Register an interrupt handler routing secure interrupts to SPMD 558 * while the NWd is running. 559 */ 560 flags = 0; 561 set_interrupt_rm_flag(flags, NON_SECURE); 562 rc = register_interrupt_type_handler(INTR_TYPE_S_EL1, 563 spmd_secure_interrupt_handler, 564 flags); 565 if (rc != 0) { 566 panic(); 567 } 568 569 /* 570 * Permit configurations where the SPM resides at S-EL1/2 and upon a 571 * Group0 interrupt triggering while the normal world runs, the 572 * interrupt is routed either through the EHF or directly to the SPMD: 573 * 574 * EL3_EXCEPTION_HANDLING=0: the Group0 interrupt is routed to the SPMD 575 * for handling by spmd_group0_interrupt_handler_nwd. 576 * 577 * EL3_EXCEPTION_HANDLING=1: the Group0 interrupt is routed to the EHF. 578 * 579 */ 580 #if (EL3_EXCEPTION_HANDLING == 0) 581 /* 582 * If EL3 interrupts are supported by the platform, register an 583 * interrupt handler routing Group0 interrupts to SPMD while the NWd is 584 * running. 585 */ 586 if (plat_ic_has_interrupt_type(INTR_TYPE_EL3)) { 587 rc = register_interrupt_type_handler(INTR_TYPE_EL3, 588 spmd_group0_interrupt_handler_nwd, 589 flags); 590 if (rc != 0) { 591 panic(); 592 } 593 } 594 #endif 595 596 return 0; 597 } 598 599 /******************************************************************************* 600 * Initialize context of SPM Core. 601 ******************************************************************************/ 602 int spmd_setup(void) 603 { 604 int rc; 605 void *spmc_manifest; 606 607 /* 608 * If the SPMC is at EL3, then just initialise it directly. The 609 * shenanigans of when it is at a lower EL are not needed. 610 */ 611 if (is_spmc_at_el3()) { 612 /* Allow the SPMC to populate its attributes directly. */ 613 spmc_populate_attrs(&spmc_attrs); 614 615 rc = spmc_setup(); 616 if (rc != 0) { 617 WARN("SPMC initialisation failed 0x%x.\n", rc); 618 } 619 return 0; 620 } 621 622 spmc_ep_info = bl31_plat_get_next_image_ep_info(SECURE); 623 if (spmc_ep_info == NULL) { 624 WARN("No SPM Core image provided by BL2 boot loader.\n"); 625 return 0; 626 } 627 628 /* Under no circumstances will this parameter be 0 */ 629 assert(spmc_ep_info->pc != 0ULL); 630 631 /* 632 * Check if BL32 ep_info has a reference to 'tos_fw_config'. This will 633 * be used as a manifest for the SPM Core at the next lower EL/mode. 634 */ 635 spmc_manifest = (void *)spmc_ep_info->args.arg0; 636 if (spmc_manifest == NULL) { 637 WARN("Invalid or absent SPM Core manifest.\n"); 638 return 0; 639 } 640 641 /* Load manifest, init SPMC */ 642 rc = spmd_spmc_init(spmc_manifest); 643 if (rc != 0) { 644 WARN("Booting device without SPM initialization.\n"); 645 } 646 647 return 0; 648 } 649 650 /******************************************************************************* 651 * Forward FF-A SMCs to the other security state. 652 ******************************************************************************/ 653 uint64_t spmd_smc_switch_state(uint32_t smc_fid, 654 bool secure_origin, 655 uint64_t x1, 656 uint64_t x2, 657 uint64_t x3, 658 uint64_t x4, 659 void *handle, 660 uint64_t flags) 661 { 662 unsigned int secure_state_in = (secure_origin) ? SECURE : NON_SECURE; 663 unsigned int secure_state_out = (!secure_origin) ? SECURE : NON_SECURE; 664 void *ctx_out; 665 666 #if SPMD_SPM_AT_SEL2 667 if ((secure_state_out == SECURE) && (is_sve_hint_set(flags) == true)) { 668 /* 669 * Set the SVE hint bit in x0 and pass to the lower secure EL, 670 * if it was set by the caller. 671 */ 672 smc_fid |= (FUNCID_SVE_HINT_MASK << FUNCID_SVE_HINT_SHIFT); 673 } 674 #endif 675 676 /* Save incoming security state */ 677 #if SPMD_SPM_AT_SEL2 678 cm_el2_sysregs_context_save(secure_state_in); 679 #else 680 cm_el1_sysregs_context_save(secure_state_in); 681 #endif 682 683 /* Restore outgoing security state */ 684 #if SPMD_SPM_AT_SEL2 685 cm_el2_sysregs_context_restore(secure_state_out); 686 #else 687 cm_el1_sysregs_context_restore(secure_state_out); 688 #endif 689 cm_set_next_eret_context(secure_state_out); 690 691 ctx_out = cm_get_context(secure_state_out); 692 #if SPMD_SPM_AT_SEL2 693 /* 694 * If SPMC is at SEL2, save additional registers x8-x17, which may 695 * be used in FF-A calls such as FFA_PARTITION_INFO_GET_REGS. 696 * Note that technically, all SPMCs can support this, but this code is 697 * under ifdef to minimize breakage in case other SPMCs do not save 698 * and restore x8-x17. 699 * We also need to pass through these registers since not all FF-A ABIs 700 * modify x8-x17, in which case, SMCCC requires that these registers be 701 * preserved, so the SPMD passes through these registers and expects the 702 * SPMC to save and restore (potentially also modify) them. 703 */ 704 SMC_RET18(ctx_out, smc_fid, x1, x2, x3, x4, 705 SMC_GET_GP(handle, CTX_GPREG_X5), 706 SMC_GET_GP(handle, CTX_GPREG_X6), 707 SMC_GET_GP(handle, CTX_GPREG_X7), 708 SMC_GET_GP(handle, CTX_GPREG_X8), 709 SMC_GET_GP(handle, CTX_GPREG_X9), 710 SMC_GET_GP(handle, CTX_GPREG_X10), 711 SMC_GET_GP(handle, CTX_GPREG_X11), 712 SMC_GET_GP(handle, CTX_GPREG_X12), 713 SMC_GET_GP(handle, CTX_GPREG_X13), 714 SMC_GET_GP(handle, CTX_GPREG_X14), 715 SMC_GET_GP(handle, CTX_GPREG_X15), 716 SMC_GET_GP(handle, CTX_GPREG_X16), 717 SMC_GET_GP(handle, CTX_GPREG_X17) 718 ); 719 720 #else 721 SMC_RET8(ctx_out, smc_fid, x1, x2, x3, x4, 722 SMC_GET_GP(handle, CTX_GPREG_X5), 723 SMC_GET_GP(handle, CTX_GPREG_X6), 724 SMC_GET_GP(handle, CTX_GPREG_X7)); 725 #endif 726 } 727 728 /******************************************************************************* 729 * Forward SMCs to the other security state. 730 ******************************************************************************/ 731 static uint64_t spmd_smc_forward(uint32_t smc_fid, 732 bool secure_origin, 733 uint64_t x1, 734 uint64_t x2, 735 uint64_t x3, 736 uint64_t x4, 737 void *cookie, 738 void *handle, 739 uint64_t flags) 740 { 741 if (is_spmc_at_el3() && !secure_origin) { 742 return spmc_smc_handler(smc_fid, secure_origin, x1, x2, x3, x4, 743 cookie, handle, flags); 744 } 745 746 return spmd_smc_switch_state(smc_fid, secure_origin, x1, x2, x3, x4, 747 handle, flags); 748 749 } 750 751 /******************************************************************************* 752 * Return FFA_ERROR with specified error code 753 ******************************************************************************/ 754 uint64_t spmd_ffa_error_return(void *handle, int error_code) 755 { 756 SMC_RET8(handle, (uint32_t) FFA_ERROR, 757 FFA_TARGET_INFO_MBZ, (uint32_t)error_code, 758 FFA_PARAM_MBZ, FFA_PARAM_MBZ, FFA_PARAM_MBZ, 759 FFA_PARAM_MBZ, FFA_PARAM_MBZ); 760 } 761 762 /******************************************************************************* 763 * spmd_check_address_in_binary_image 764 ******************************************************************************/ 765 bool spmd_check_address_in_binary_image(uint64_t address) 766 { 767 assert(!check_uptr_overflow(spmc_attrs.load_address, spmc_attrs.binary_size)); 768 769 return ((address >= spmc_attrs.load_address) && 770 (address < (spmc_attrs.load_address + spmc_attrs.binary_size))); 771 } 772 773 /****************************************************************************** 774 * spmd_is_spmc_message 775 *****************************************************************************/ 776 static bool spmd_is_spmc_message(unsigned int ep) 777 { 778 if (is_spmc_at_el3()) { 779 return false; 780 } 781 782 return ((ffa_endpoint_destination(ep) == SPMD_DIRECT_MSG_ENDPOINT_ID) 783 && (ffa_endpoint_source(ep) == spmc_attrs.spmc_id)); 784 } 785 786 /****************************************************************************** 787 * spmd_handle_spmc_message 788 *****************************************************************************/ 789 static int spmd_handle_spmc_message(unsigned long long msg, 790 unsigned long long parm1, unsigned long long parm2, 791 unsigned long long parm3, unsigned long long parm4) 792 { 793 VERBOSE("%s %llx %llx %llx %llx %llx\n", __func__, 794 msg, parm1, parm2, parm3, parm4); 795 796 return -EINVAL; 797 } 798 799 /******************************************************************************* 800 * This function forwards FF-A SMCs to either the main SPMD handler or the 801 * SPMC at EL3, depending on the origin security state, if enabled. 802 ******************************************************************************/ 803 uint64_t spmd_ffa_smc_handler(uint32_t smc_fid, 804 uint64_t x1, 805 uint64_t x2, 806 uint64_t x3, 807 uint64_t x4, 808 void *cookie, 809 void *handle, 810 uint64_t flags) 811 { 812 if (is_spmc_at_el3()) { 813 /* 814 * If we have an SPMC at EL3 allow handling of the SMC first. 815 * The SPMC will call back through to SPMD handler if required. 816 */ 817 if (is_caller_secure(flags)) { 818 return spmc_smc_handler(smc_fid, 819 is_caller_secure(flags), 820 x1, x2, x3, x4, cookie, 821 handle, flags); 822 } 823 } 824 return spmd_smc_handler(smc_fid, x1, x2, x3, x4, cookie, 825 handle, flags); 826 } 827 828 /******************************************************************************* 829 * This function handles all SMCs in the range reserved for FFA. Each call is 830 * either forwarded to the other security state or handled by the SPM dispatcher 831 ******************************************************************************/ 832 uint64_t spmd_smc_handler(uint32_t smc_fid, 833 uint64_t x1, 834 uint64_t x2, 835 uint64_t x3, 836 uint64_t x4, 837 void *cookie, 838 void *handle, 839 uint64_t flags) 840 { 841 spmd_spm_core_context_t *ctx = spmd_get_context(); 842 bool secure_origin; 843 int ret; 844 uint32_t input_version; 845 846 /* Determine which security state this SMC originated from */ 847 secure_origin = is_caller_secure(flags); 848 849 VERBOSE("SPM(%u): 0x%x 0x%" PRIx64 " 0x%" PRIx64 " 0x%" PRIx64 " 0x%" PRIx64 850 " 0x%" PRIx64 " 0x%" PRIx64 " 0x%" PRIx64 "\n", 851 plat_my_core_pos(), smc_fid, x1, x2, x3, x4, 852 SMC_GET_GP(handle, CTX_GPREG_X5), 853 SMC_GET_GP(handle, CTX_GPREG_X6), 854 SMC_GET_GP(handle, CTX_GPREG_X7)); 855 856 /* 857 * If there is an on-going info regs from EL3 SPMD LP, unconditionally 858 * return, we don't expect any other FF-A ABIs to be called between 859 * calls to FFA_PARTITION_INFO_GET_REGS. 860 */ 861 if (is_spmd_logical_sp_info_regs_req_in_progress(ctx)) { 862 assert(secure_origin); 863 spmd_spm_core_sync_exit(0ULL); 864 } 865 866 switch (smc_fid) { 867 case FFA_ERROR: 868 /* 869 * Check if this is the first invocation of this interface on 870 * this CPU. If so, then indicate that the SPM Core initialised 871 * unsuccessfully. 872 */ 873 if (secure_origin && (ctx->state == SPMC_STATE_ON_PENDING)) { 874 spmd_spm_core_sync_exit(x2); 875 } 876 877 /* 878 * If there was an SPMD logical partition direct request on-going, 879 * return back to the SPMD logical partition so the error can be 880 * consumed. 881 */ 882 if (is_spmd_logical_sp_dir_req_in_progress(ctx)) { 883 assert(secure_origin); 884 spmd_spm_core_sync_exit(0ULL); 885 } 886 887 return spmd_smc_forward(smc_fid, secure_origin, 888 x1, x2, x3, x4, cookie, 889 handle, flags); 890 break; /* not reached */ 891 892 case FFA_VERSION: 893 input_version = (uint32_t)(0xFFFFFFFF & x1); 894 /* 895 * If caller is secure and SPMC was initialized, 896 * return FFA_VERSION of SPMD. 897 * If caller is non secure and SPMC was initialized, 898 * forward to the EL3 SPMC if enabled, otherwise return 899 * the SPMC version if implemented at a lower EL. 900 * Sanity check to "input_version". 901 * If the EL3 SPMC is enabled, ignore the SPMC state as 902 * this is not used. 903 */ 904 if ((input_version & FFA_VERSION_BIT31_MASK) || 905 (!is_spmc_at_el3() && (ctx->state == SPMC_STATE_RESET))) { 906 ret = FFA_ERROR_NOT_SUPPORTED; 907 } else if (!secure_origin) { 908 if (is_spmc_at_el3()) { 909 /* 910 * Forward the call directly to the EL3 SPMC, if 911 * enabled, as we don't need to wrap the call in 912 * a direct request. 913 */ 914 return spmd_smc_forward(smc_fid, secure_origin, 915 x1, x2, x3, x4, cookie, 916 handle, flags); 917 } 918 919 gp_regs_t *gpregs = get_gpregs_ctx(&ctx->cpu_ctx); 920 uint64_t rc; 921 922 if (spmc_attrs.major_version == 1 && 923 spmc_attrs.minor_version == 0) { 924 ret = MAKE_FFA_VERSION(spmc_attrs.major_version, 925 spmc_attrs.minor_version); 926 SMC_RET8(handle, (uint32_t)ret, 927 FFA_TARGET_INFO_MBZ, 928 FFA_TARGET_INFO_MBZ, 929 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 930 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 931 FFA_PARAM_MBZ); 932 break; 933 } 934 /* Save non-secure system registers context */ 935 #if SPMD_SPM_AT_SEL2 936 cm_el2_sysregs_context_save(NON_SECURE); 937 #else 938 cm_el1_sysregs_context_save(NON_SECURE); 939 #endif 940 941 /* 942 * The incoming request has FFA_VERSION as X0 smc_fid 943 * and requested version in x1. Prepare a direct request 944 * from SPMD to SPMC with FFA_VERSION framework function 945 * identifier in X2 and requested version in X3. 946 */ 947 spmd_build_spmc_message(gpregs, 948 SPMD_FWK_MSG_FFA_VERSION_REQ, 949 input_version); 950 951 /* 952 * Ensure x8-x17 NS GP register values are untouched when returning 953 * from the SPMC. 954 */ 955 write_ctx_reg(gpregs, CTX_GPREG_X8, SMC_GET_GP(handle, CTX_GPREG_X8)); 956 write_ctx_reg(gpregs, CTX_GPREG_X9, SMC_GET_GP(handle, CTX_GPREG_X9)); 957 write_ctx_reg(gpregs, CTX_GPREG_X10, SMC_GET_GP(handle, CTX_GPREG_X10)); 958 write_ctx_reg(gpregs, CTX_GPREG_X11, SMC_GET_GP(handle, CTX_GPREG_X11)); 959 write_ctx_reg(gpregs, CTX_GPREG_X12, SMC_GET_GP(handle, CTX_GPREG_X12)); 960 write_ctx_reg(gpregs, CTX_GPREG_X13, SMC_GET_GP(handle, CTX_GPREG_X13)); 961 write_ctx_reg(gpregs, CTX_GPREG_X14, SMC_GET_GP(handle, CTX_GPREG_X14)); 962 write_ctx_reg(gpregs, CTX_GPREG_X15, SMC_GET_GP(handle, CTX_GPREG_X15)); 963 write_ctx_reg(gpregs, CTX_GPREG_X16, SMC_GET_GP(handle, CTX_GPREG_X16)); 964 write_ctx_reg(gpregs, CTX_GPREG_X17, SMC_GET_GP(handle, CTX_GPREG_X17)); 965 966 rc = spmd_spm_core_sync_entry(ctx); 967 968 if ((rc != 0ULL) || 969 (SMC_GET_GP(gpregs, CTX_GPREG_X0) != 970 FFA_MSG_SEND_DIRECT_RESP_SMC32) || 971 (SMC_GET_GP(gpregs, CTX_GPREG_X2) != 972 (FFA_FWK_MSG_BIT | 973 SPMD_FWK_MSG_FFA_VERSION_RESP))) { 974 ERROR("Failed to forward FFA_VERSION\n"); 975 ret = FFA_ERROR_NOT_SUPPORTED; 976 } else { 977 ret = SMC_GET_GP(gpregs, CTX_GPREG_X3); 978 } 979 980 /* 981 * x0-x4 are updated by spmd_smc_forward below. 982 * Zero out x5-x7 in the FFA_VERSION response. 983 */ 984 write_ctx_reg(gpregs, CTX_GPREG_X5, 0); 985 write_ctx_reg(gpregs, CTX_GPREG_X6, 0); 986 write_ctx_reg(gpregs, CTX_GPREG_X7, 0); 987 988 /* 989 * Return here after SPMC has handled FFA_VERSION. 990 * The returned SPMC version is held in X3. 991 * Forward this version in X0 to the non-secure caller. 992 */ 993 return spmd_smc_forward(ret, true, FFA_PARAM_MBZ, 994 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 995 FFA_PARAM_MBZ, cookie, gpregs, 996 flags); 997 } else { 998 ret = MAKE_FFA_VERSION(FFA_VERSION_MAJOR, 999 FFA_VERSION_MINOR); 1000 } 1001 1002 SMC_RET8(handle, (uint32_t)ret, FFA_TARGET_INFO_MBZ, 1003 FFA_TARGET_INFO_MBZ, FFA_PARAM_MBZ, FFA_PARAM_MBZ, 1004 FFA_PARAM_MBZ, FFA_PARAM_MBZ, FFA_PARAM_MBZ); 1005 break; /* not reached */ 1006 1007 case FFA_FEATURES: 1008 /* 1009 * This is an optional interface. Do the minimal checks and 1010 * forward to SPM Core which will handle it if implemented. 1011 */ 1012 1013 /* Forward SMC from Normal world to the SPM Core */ 1014 if (!secure_origin) { 1015 return spmd_smc_forward(smc_fid, secure_origin, 1016 x1, x2, x3, x4, cookie, 1017 handle, flags); 1018 } 1019 1020 /* 1021 * Return success if call was from secure world i.e. all 1022 * FFA functions are supported. This is essentially a 1023 * nop. 1024 */ 1025 SMC_RET8(handle, FFA_SUCCESS_SMC32, x1, x2, x3, x4, 1026 SMC_GET_GP(handle, CTX_GPREG_X5), 1027 SMC_GET_GP(handle, CTX_GPREG_X6), 1028 SMC_GET_GP(handle, CTX_GPREG_X7)); 1029 1030 break; /* not reached */ 1031 1032 case FFA_ID_GET: 1033 /* 1034 * Returns the ID of the calling FFA component. 1035 */ 1036 if (!secure_origin) { 1037 SMC_RET8(handle, FFA_SUCCESS_SMC32, 1038 FFA_TARGET_INFO_MBZ, FFA_NS_ENDPOINT_ID, 1039 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 1040 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 1041 FFA_PARAM_MBZ); 1042 } 1043 1044 SMC_RET8(handle, FFA_SUCCESS_SMC32, 1045 FFA_TARGET_INFO_MBZ, spmc_attrs.spmc_id, 1046 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 1047 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 1048 FFA_PARAM_MBZ); 1049 1050 break; /* not reached */ 1051 1052 case FFA_SECONDARY_EP_REGISTER_SMC64: 1053 if (secure_origin) { 1054 ret = spmd_pm_secondary_ep_register(x1); 1055 1056 if (ret < 0) { 1057 SMC_RET8(handle, FFA_ERROR_SMC64, 1058 FFA_TARGET_INFO_MBZ, ret, 1059 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 1060 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 1061 FFA_PARAM_MBZ); 1062 } else { 1063 SMC_RET8(handle, FFA_SUCCESS_SMC64, 1064 FFA_TARGET_INFO_MBZ, FFA_PARAM_MBZ, 1065 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 1066 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 1067 FFA_PARAM_MBZ); 1068 } 1069 } 1070 1071 return spmd_ffa_error_return(handle, FFA_ERROR_NOT_SUPPORTED); 1072 break; /* Not reached */ 1073 1074 case FFA_SPM_ID_GET: 1075 if (MAKE_FFA_VERSION(1, 1) > FFA_VERSION_COMPILED) { 1076 return spmd_ffa_error_return(handle, 1077 FFA_ERROR_NOT_SUPPORTED); 1078 } 1079 /* 1080 * Returns the ID of the SPMC or SPMD depending on the FF-A 1081 * instance where this function is invoked 1082 */ 1083 if (!secure_origin) { 1084 SMC_RET8(handle, FFA_SUCCESS_SMC32, 1085 FFA_TARGET_INFO_MBZ, spmc_attrs.spmc_id, 1086 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 1087 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 1088 FFA_PARAM_MBZ); 1089 } 1090 SMC_RET8(handle, FFA_SUCCESS_SMC32, 1091 FFA_TARGET_INFO_MBZ, SPMD_DIRECT_MSG_ENDPOINT_ID, 1092 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 1093 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 1094 FFA_PARAM_MBZ); 1095 1096 break; /* not reached */ 1097 1098 case FFA_MSG_SEND_DIRECT_REQ_SMC32: 1099 case FFA_MSG_SEND_DIRECT_REQ_SMC64: 1100 /* 1101 * Regardless of secure_origin, SPMD logical partitions cannot 1102 * handle direct messages. They can only initiate direct 1103 * messages and consume direct responses or errors. 1104 */ 1105 if (is_spmd_lp_id(ffa_endpoint_source(x1)) || 1106 is_spmd_lp_id(ffa_endpoint_destination(x1))) { 1107 return spmd_ffa_error_return(handle, 1108 FFA_ERROR_INVALID_PARAMETER 1109 ); 1110 } 1111 1112 /* 1113 * When there is an ongoing SPMD logical partition direct 1114 * request, there cannot be another direct request. Return 1115 * error in this case. Panic'ing is an option but that does 1116 * not provide the opportunity for caller to abort based on 1117 * error codes. 1118 */ 1119 if (is_spmd_logical_sp_dir_req_in_progress(ctx)) { 1120 assert(secure_origin); 1121 return spmd_ffa_error_return(handle, 1122 FFA_ERROR_DENIED); 1123 } 1124 1125 if (!secure_origin) { 1126 /* Validate source endpoint is non-secure for non-secure caller. */ 1127 if (ffa_is_secure_world_id(ffa_endpoint_source(x1))) { 1128 return spmd_ffa_error_return(handle, 1129 FFA_ERROR_INVALID_PARAMETER); 1130 } 1131 } 1132 if (secure_origin && spmd_is_spmc_message(x1)) { 1133 ret = spmd_handle_spmc_message(x3, x4, 1134 SMC_GET_GP(handle, CTX_GPREG_X5), 1135 SMC_GET_GP(handle, CTX_GPREG_X6), 1136 SMC_GET_GP(handle, CTX_GPREG_X7)); 1137 1138 SMC_RET8(handle, FFA_SUCCESS_SMC32, 1139 FFA_TARGET_INFO_MBZ, ret, 1140 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 1141 FFA_PARAM_MBZ, FFA_PARAM_MBZ, 1142 FFA_PARAM_MBZ); 1143 } else { 1144 /* Forward direct message to the other world */ 1145 return spmd_smc_forward(smc_fid, secure_origin, 1146 x1, x2, x3, x4, cookie, 1147 handle, flags); 1148 } 1149 break; /* Not reached */ 1150 1151 case FFA_MSG_SEND_DIRECT_REQ2_SMC64: 1152 if (!secure_origin) { 1153 /* Validate source endpoint is non-secure for non-secure caller. */ 1154 if (ffa_is_secure_world_id(ffa_endpoint_source(x1))) { 1155 return spmd_ffa_error_return(handle, 1156 FFA_ERROR_INVALID_PARAMETER); 1157 } 1158 } 1159 /* FFA_MSG_SEND_DIRECT_REQ2 not used for framework messages. */ 1160 if (secure_origin && spmd_is_spmc_message(x1)) { 1161 return spmd_ffa_error_return(handle, FFA_ERROR_INVALID_PARAMETER); 1162 } else { 1163 /* Forward direct message to the other world */ 1164 return spmd_smc_forward(smc_fid, secure_origin, 1165 x1, x2, x3, x4, cookie, 1166 handle, flags); 1167 } 1168 break; /* Not reached */ 1169 1170 case FFA_MSG_SEND_DIRECT_RESP_SMC32: 1171 case FFA_MSG_SEND_DIRECT_RESP_SMC64: 1172 if (secure_origin && (spmd_is_spmc_message(x1) || 1173 is_spmd_logical_sp_dir_req_in_progress(ctx))) { 1174 spmd_spm_core_sync_exit(0ULL); 1175 } else { 1176 /* Forward direct message to the other world */ 1177 return spmd_smc_forward(smc_fid, secure_origin, 1178 x1, x2, x3, x4, cookie, 1179 handle, flags); 1180 } 1181 break; /* Not reached */ 1182 case FFA_MSG_SEND_DIRECT_RESP2_SMC64: 1183 /* Forward direct message to the other world */ 1184 return spmd_smc_forward(smc_fid, secure_origin, 1185 x1, x2, x3, x4, cookie, 1186 handle, flags); 1187 break; /* Not reached */ 1188 case FFA_RX_RELEASE: 1189 case FFA_RXTX_MAP_SMC32: 1190 case FFA_RXTX_MAP_SMC64: 1191 case FFA_RXTX_UNMAP: 1192 case FFA_PARTITION_INFO_GET: 1193 #if MAKE_FFA_VERSION(1, 1) <= FFA_VERSION_COMPILED 1194 case FFA_NOTIFICATION_BITMAP_CREATE: 1195 case FFA_NOTIFICATION_BITMAP_DESTROY: 1196 case FFA_NOTIFICATION_BIND: 1197 case FFA_NOTIFICATION_UNBIND: 1198 case FFA_NOTIFICATION_SET: 1199 case FFA_NOTIFICATION_GET: 1200 case FFA_NOTIFICATION_INFO_GET: 1201 case FFA_NOTIFICATION_INFO_GET_SMC64: 1202 case FFA_MSG_SEND2: 1203 case FFA_RX_ACQUIRE: 1204 #endif 1205 case FFA_MSG_RUN: 1206 /* 1207 * Above calls should be invoked only by the Normal world and 1208 * must not be forwarded from Secure world to Normal world. 1209 */ 1210 if (secure_origin) { 1211 return spmd_ffa_error_return(handle, 1212 FFA_ERROR_NOT_SUPPORTED); 1213 } 1214 1215 /* Forward the call to the other world */ 1216 /* fallthrough */ 1217 case FFA_MSG_SEND: 1218 case FFA_MEM_DONATE_SMC32: 1219 case FFA_MEM_DONATE_SMC64: 1220 case FFA_MEM_LEND_SMC32: 1221 case FFA_MEM_LEND_SMC64: 1222 case FFA_MEM_SHARE_SMC32: 1223 case FFA_MEM_SHARE_SMC64: 1224 case FFA_MEM_RETRIEVE_REQ_SMC32: 1225 case FFA_MEM_RETRIEVE_REQ_SMC64: 1226 case FFA_MEM_RETRIEVE_RESP: 1227 case FFA_MEM_RELINQUISH: 1228 case FFA_MEM_RECLAIM: 1229 case FFA_MEM_FRAG_TX: 1230 case FFA_MEM_FRAG_RX: 1231 case FFA_SUCCESS_SMC32: 1232 case FFA_SUCCESS_SMC64: 1233 /* 1234 * If there is an ongoing direct request from an SPMD logical 1235 * partition, return an error. 1236 */ 1237 if (is_spmd_logical_sp_dir_req_in_progress(ctx)) { 1238 assert(secure_origin); 1239 return spmd_ffa_error_return(handle, 1240 FFA_ERROR_DENIED); 1241 } 1242 1243 return spmd_smc_forward(smc_fid, secure_origin, 1244 x1, x2, x3, x4, cookie, 1245 handle, flags); 1246 break; /* not reached */ 1247 1248 case FFA_MSG_WAIT: 1249 /* 1250 * Check if this is the first invocation of this interface on 1251 * this CPU from the Secure world. If so, then indicate that the 1252 * SPM Core initialised successfully. 1253 */ 1254 if (secure_origin && (ctx->state == SPMC_STATE_ON_PENDING)) { 1255 spmd_spm_core_sync_exit(0ULL); 1256 } 1257 1258 /* Forward the call to the other world */ 1259 /* fallthrough */ 1260 case FFA_INTERRUPT: 1261 case FFA_MSG_YIELD: 1262 /* This interface must be invoked only by the Secure world */ 1263 if (!secure_origin) { 1264 return spmd_ffa_error_return(handle, 1265 FFA_ERROR_NOT_SUPPORTED); 1266 } 1267 1268 if (is_spmd_logical_sp_dir_req_in_progress(ctx)) { 1269 assert(secure_origin); 1270 return spmd_ffa_error_return(handle, 1271 FFA_ERROR_DENIED); 1272 } 1273 1274 return spmd_smc_forward(smc_fid, secure_origin, 1275 x1, x2, x3, x4, cookie, 1276 handle, flags); 1277 break; /* not reached */ 1278 1279 case FFA_NORMAL_WORLD_RESUME: 1280 if (secure_origin && ctx->secure_interrupt_ongoing) { 1281 spmd_spm_core_sync_exit(0ULL); 1282 } else { 1283 return spmd_ffa_error_return(handle, FFA_ERROR_DENIED); 1284 } 1285 break; /* Not reached */ 1286 #if MAKE_FFA_VERSION(1, 1) <= FFA_VERSION_COMPILED 1287 case FFA_PARTITION_INFO_GET_REGS_SMC64: 1288 if (secure_origin) { 1289 return spmd_el3_populate_logical_partition_info(handle, x1, 1290 x2, x3); 1291 } 1292 1293 /* Call only supported with SMCCC 1.2+ */ 1294 if (MAKE_SMCCC_VERSION(SMCCC_MAJOR_VERSION, SMCCC_MINOR_VERSION) < 0x10002) { 1295 return spmd_ffa_error_return(handle, FFA_ERROR_NOT_SUPPORTED); 1296 } 1297 1298 return spmd_smc_forward(smc_fid, secure_origin, 1299 x1, x2, x3, x4, cookie, 1300 handle, flags); 1301 break; /* Not reached */ 1302 #endif 1303 case FFA_CONSOLE_LOG_SMC32: 1304 case FFA_CONSOLE_LOG_SMC64: 1305 /* This interface must not be forwarded to other worlds. */ 1306 return spmd_ffa_error_return(handle, FFA_ERROR_NOT_SUPPORTED); 1307 break; /* not reached */ 1308 1309 case FFA_EL3_INTR_HANDLE: 1310 if (secure_origin) { 1311 return spmd_handle_group0_intr_swd(handle); 1312 } else { 1313 return spmd_ffa_error_return(handle, FFA_ERROR_NOT_SUPPORTED); 1314 } 1315 default: 1316 WARN("SPM: Unsupported call 0x%08x\n", smc_fid); 1317 return spmd_ffa_error_return(handle, FFA_ERROR_NOT_SUPPORTED); 1318 } 1319 } 1320