1/* SPDX-License-Identifier: BSD-2-Clause */ 2/* 3 * Copyright (c) 2014, Linaro Limited 4 * Copyright (c) 2021, Arm Limited 5 */ 6 7#include <arm32_macros.S> 8#include <arm.h> 9#include <asm.S> 10#include <generated/asm-defines.h> 11#include <keep.h> 12#include <kernel/asan.h> 13#include <kernel/cache_helpers.h> 14#include <kernel/thread_private.h> 15#include <platform_config.h> 16#include <sm/optee_smc.h> 17#include <sm/teesmc_opteed.h> 18#include <sm/teesmc_opteed_macros.h> 19 20.arch_extension sec 21 22.section .data 23.balign 4 24 25#ifdef CFG_BOOT_SYNC_CPU 26.equ SEM_CPU_READY, 1 27#endif 28 29#ifdef CFG_PL310 30.section .rodata.init 31panic_boot_file: 32 .asciz __FILE__ 33 34/* 35 * void assert_flat_mapped_range(uint32_t vaddr, uint32_t line) 36 */ 37LOCAL_FUNC __assert_flat_mapped_range , : 38UNWIND( .cantunwind) 39 push { r4-r6, lr } 40 mov r4, r0 41 mov r5, r1 42 bl cpu_mmu_enabled 43 cmp r0, #0 44 beq 1f 45 mov r0, r4 46 bl virt_to_phys 47 cmp r0, r4 48 beq 1f 49 /* 50 * this must be compliant with the panic generic routine: 51 * __do_panic(__FILE__, __LINE__, __func__, str) 52 */ 53 ldr r0, =panic_boot_file 54 mov r1, r5 55 mov r2, #0 56 mov r3, #0 57 bl __do_panic 58 b . /* should NOT return */ 591: pop { r4-r6, pc } 60END_FUNC __assert_flat_mapped_range 61 62 /* panic if mmu is enable and vaddr != paddr (scratch lr) */ 63 .macro assert_flat_mapped_range va, line 64 ldr r0, \va 65 ldr r1, =\line 66 bl __assert_flat_mapped_range 67 .endm 68#endif /* CFG_PL310 */ 69 70WEAK_FUNC plat_cpu_reset_early , : 71 bx lr 72END_FUNC plat_cpu_reset_early 73DECLARE_KEEP_PAGER plat_cpu_reset_early 74 75 .section .identity_map, "ax" 76 .align 5 77LOCAL_FUNC reset_vect_table , : , .identity_map 78 b . 79 b . /* Undef */ 80 b . /* Syscall */ 81 b . /* Prefetch abort */ 82 b . /* Data abort */ 83 b . /* Reserved */ 84 b . /* IRQ */ 85 b . /* FIQ */ 86END_FUNC reset_vect_table 87 88 .macro cpu_is_ready 89#ifdef CFG_BOOT_SYNC_CPU 90 bl __get_core_pos 91 lsl r0, r0, #2 92 ldr r1,=sem_cpu_sync 93 ldr r2, =SEM_CPU_READY 94 str r2, [r1, r0] 95 dsb 96 sev 97#endif 98 .endm 99 100 .macro wait_primary 101#ifdef CFG_BOOT_SYNC_CPU 102 ldr r0, =sem_cpu_sync 103 mov r2, #SEM_CPU_READY 104 sev 1051: 106 ldr r1, [r0] 107 cmp r1, r2 108 wfene 109 bne 1b 110#endif 111 .endm 112 113 .macro wait_secondary 114#ifdef CFG_BOOT_SYNC_CPU 115 ldr r0, =sem_cpu_sync 116 mov r3, #CFG_TEE_CORE_NB_CORE 117 mov r2, #SEM_CPU_READY 118 sev 1191: 120 subs r3, r3, #1 121 beq 3f 122 add r0, r0, #4 1232: 124 ldr r1, [r0] 125 cmp r1, r2 126 wfene 127 bne 2b 128 b 1b 1293: 130#endif 131 .endm 132 133 /* 134 * set_sctlr : Setup some core configuration in CP15 SCTLR 135 * 136 * Setup required by current implementation of the OP-TEE core: 137 * - Disable data and instruction cache. 138 * - MMU is expected off and exceptions trapped in ARM mode. 139 * - Enable or disable alignment checks upon platform configuration. 140 * - Optionally enable write-implies-execute-never. 141 * - Optionally enable round robin strategy for cache replacement. 142 * 143 * Clobbers r0. 144 */ 145 .macro set_sctlr 146 read_sctlr r0 147 bic r0, r0, #(SCTLR_M | SCTLR_C) 148 bic r0, r0, #SCTLR_I 149 bic r0, r0, #SCTLR_TE 150 orr r0, r0, #SCTLR_SPAN 151#if defined(CFG_SCTLR_ALIGNMENT_CHECK) 152 orr r0, r0, #SCTLR_A 153#else 154 bic r0, r0, #SCTLR_A 155#endif 156#if defined(CFG_HWSUPP_MEM_PERM_WXN) && defined(CFG_CORE_RWDATA_NOEXEC) 157 orr r0, r0, #(SCTLR_WXN | SCTLR_UWXN) 158#endif 159#if defined(CFG_ENABLE_SCTLR_RR) 160 orr r0, r0, #SCTLR_RR 161#endif 162 write_sctlr r0 163 .endm 164 165#if defined(CFG_CORE_SEL1_SPMC) && defined(CFG_WITH_ARM_TRUSTED_FW) 166 /* 167 * With OP-TEE as SPMC at S-EL1 the SPMD (SPD_spmd) in TF-A passes 168 * the DTB in r0, pagable part in r1, and the rest of the registers 169 * are unused 170 * 171 * Save boot arguments passed 172 * entry r0, saved r6: device tree address 173 * entry r1, saved r4: pagestore 174 * saved r5, r7: Zero 175 */ 176 .macro bootargs_entry 177 mov r6, r0 178 mov r4, r1 179 mov r5, #0 180 mov r7, #0 181 .endm 182#else 183 /* 184 * Save boot arguments 185 * entry r0, saved r4: pagestore 186 * entry r1, saved r7: (ARMv7 standard bootarg #1) 187 * entry r2, saved r6: device tree address, (ARMv7 standard bootarg #2) 188 * entry lr, saved r5: non-secure entry address (ARMv7 bootarg #0) 189 */ 190 .macro bootargs_entry 191#if defined(CFG_NS_ENTRY_ADDR) 192 ldr r5, =CFG_NS_ENTRY_ADDR 193#else 194 mov r5, lr 195#endif 196#if defined(CFG_PAGEABLE_ADDR) 197 ldr r4, =CFG_PAGEABLE_ADDR 198#else 199 mov r4, r0 200#endif 201#if defined(CFG_DT_ADDR) 202 ldr r6, =CFG_DT_ADDR 203#else 204 mov r6, r2 205#endif 206 mov r7, r1 207 .endm 208#endif 209 210 .macro maybe_init_spectre_workaround 211#if !defined(CFG_WITH_ARM_TRUSTED_FW) && \ 212 (defined(CFG_CORE_WORKAROUND_SPECTRE_BP) || \ 213 defined(CFG_CORE_WORKAROUND_SPECTRE_BP_SEC)) 214 read_midr r0 215 ubfx r1, r0, #MIDR_IMPLEMENTER_SHIFT, #MIDR_IMPLEMENTER_WIDTH 216 cmp r1, #MIDR_IMPLEMENTER_ARM 217 bne 1f 218 ubfx r1, r0, #MIDR_PRIMARY_PART_NUM_SHIFT, \ 219 #MIDR_PRIMARY_PART_NUM_WIDTH 220 221 movw r2, #CORTEX_A8_PART_NUM 222 cmp r1, r2 223 moveq r2, #ACTLR_CA8_ENABLE_INVALIDATE_BTB 224 beq 2f 225 226 movw r2, #CORTEX_A15_PART_NUM 227 cmp r1, r2 228 moveq r2, #ACTLR_CA15_ENABLE_INVALIDATE_BTB 229 bne 1f /* Skip it for all other CPUs */ 2302: 231 read_actlr r0 232 orr r0, r0, r2 233 write_actlr r0 234 isb 2351: 236#endif 237 .endm 238 239FUNC _start , : 240UNWIND( .cantunwind) 241 242 bootargs_entry 243 244 /* 245 * 32bit entry is expected to execute Supervisor mode, 246 * some bootloader may enter in Supervisor or Monitor 247 */ 248 cps #CPSR_MODE_SVC 249 250 /* Early ARM secure MP specific configuration */ 251 bl plat_cpu_reset_early 252 maybe_init_spectre_workaround 253 254 set_sctlr 255 isb 256 257 ldr r0, =reset_vect_table 258 write_vbar r0 259 260#if defined(CFG_WITH_ARM_TRUSTED_FW) 261 b reset_primary 262#else 263 bl __get_core_pos 264 cmp r0, #0 265 beq reset_primary 266 b reset_secondary 267#endif 268END_FUNC _start 269DECLARE_KEEP_INIT _start 270 271 /* 272 * Setup sp to point to the top of the tmp stack for the current CPU: 273 * sp is assigned: 274 * stack_tmp + (cpu_id + 1) * stack_tmp_stride - STACK_TMP_GUARD 275 */ 276 .macro set_sp 277 bl __get_core_pos 278 cmp r0, #CFG_TEE_CORE_NB_CORE 279 /* Unsupported CPU, park it before it breaks something */ 280 bge unhandled_cpu 281 add r0, r0, #1 282 283 /* r2 = stack_tmp - STACK_TMP_GUARD */ 284 adr r3, stack_tmp_rel 285 ldr r2, [r3] 286 add r2, r2, r3 287 288 /* 289 * stack_tmp_stride and stack_tmp_stride_rel are the 290 * equivalent of: 291 * extern const u32 stack_tmp_stride; 292 * u32 stack_tmp_stride_rel = (u32)&stack_tmp_stride - 293 * (u32)&stack_tmp_stride_rel 294 * 295 * To load the value of stack_tmp_stride we do the equivalent 296 * of: 297 * *(u32 *)(stack_tmp_stride + (u32)&stack_tmp_stride_rel) 298 */ 299 adr r3, stack_tmp_stride_rel 300 ldr r1, [r3] 301 ldr r1, [r1, r3] 302 303 /* 304 * r0 is core pos + 1 305 * r1 is value of stack_tmp_stride 306 * r2 is value of stack_tmp + guard 307 */ 308 mul r1, r0, r1 309 add sp, r1, r2 310 .endm 311 312 /* 313 * Cache maintenance during entry: handle outer cache. 314 * End address is exclusive: first byte not to be changed. 315 * Note however arm_clX_inv/cleanbyva operate on full cache lines. 316 * 317 * Use ANSI #define to trap source file line number for PL310 assertion 318 */ 319 .macro __inval_cache_vrange vbase, vend, line 320#if defined(CFG_PL310) && !defined(CFG_PL310_SIP_PROTOCOL) 321 assert_flat_mapped_range (\vbase), (\line) 322 bl pl310_base 323 ldr r1, \vbase 324 ldr r2, \vend 325 bl arm_cl2_invbypa 326#endif 327 ldr r0, \vbase 328 ldr r1, \vend 329 sub r1, r1, r0 330 bl dcache_inv_range 331 .endm 332 333 .macro __flush_cache_vrange vbase, vend, line 334#if defined(CFG_PL310) && !defined(CFG_PL310_SIP_PROTOCOL) 335 assert_flat_mapped_range (\vbase), (\line) 336 ldr r0, \vbase 337 ldr r1, \vend 338 sub r1, r1, r0 339 bl dcache_clean_range 340 bl pl310_base 341 ldr r1, \vbase 342 ldr r2, \vend 343 bl arm_cl2_cleaninvbypa 344#endif 345 ldr r0, \vbase 346 ldr r1, \vend 347 sub r1, r1, r0 348 bl dcache_cleaninv_range 349 .endm 350 351#define inval_cache_vrange(vbase, vend) \ 352 __inval_cache_vrange vbase, vend, __LINE__ 353 354#define flush_cache_vrange(vbase, vend) \ 355 __flush_cache_vrange vbase, vend, __LINE__ 356 357#ifdef CFG_BOOT_SYNC_CPU 358#define flush_cpu_semaphores \ 359 flush_cache_vrange(sem_cpu_sync_start, sem_cpu_sync_end) 360#else 361#define flush_cpu_semaphores 362#endif 363 364LOCAL_FUNC reset_primary , : , .identity_map 365UNWIND( .cantunwind) 366 367 /* preserve r4-r7: bootargs */ 368 369#ifdef CFG_WITH_PAGER 370 /* 371 * Move init code into correct location and move hashes to a 372 * temporary safe location until the heap is initialized. 373 * 374 * The binary is built as: 375 * [Pager code, rodata and data] : In correct location 376 * [Init code and rodata] : Should be copied to __init_start 377 * [struct boot_embdata + data] : Should be saved before 378 * initializing pager, first uint32_t tells the length of the data 379 */ 380 ldr r0, =__init_start /* dst */ 381 ldr r1, =__data_end /* src */ 382 ldr r2, =__init_end 383 sub r2, r2, r0 /* init len */ 384 ldr r12, [r1, r2] /* length of hashes etc */ 385 add r2, r2, r12 /* length of init and hashes etc */ 386 /* Copy backwards (as memmove) in case we're overlapping */ 387 add r0, r0, r2 /* __init_start + len */ 388 add r1, r1, r2 /* __data_end + len */ 389 str r0, cached_mem_end 390 ldr r2, =__init_start 391copy_init: 392 ldmdb r1!, {r3, r8-r12} 393 stmdb r0!, {r3, r8-r12} 394 cmp r0, r2 395 bgt copy_init 396#else 397 /* 398 * The binary is built as: 399 * [Core, rodata and data] : In correct location 400 * [struct boot_embdata + data] : Should be moved to __end, first 401 * uint32_t tells the length of the struct + data 402 */ 403 ldr r0, =__end /* dst */ 404 ldr r1, =__data_end /* src */ 405 ldr r2, [r1] /* struct boot_embdata::total_len */ 406 /* Copy backwards (as memmove) in case we're overlapping */ 407 add r0, r0, r2 408 add r1, r1, r2 409 str r0, cached_mem_end 410 ldr r2, =__end 411 412copy_init: 413 ldmdb r1!, {r3, r8-r12} 414 stmdb r0!, {r3, r8-r12} 415 cmp r0, r2 416 bgt copy_init 417#endif 418 419 /* 420 * Clear .bss, this code obviously depends on the linker keeping 421 * start/end of .bss at least 8 byte aligned. 422 */ 423 ldr r0, =__bss_start 424 ldr r1, =__bss_end 425 mov r2, #0 426 mov r3, #0 427clear_bss: 428 stmia r0!, {r2, r3} 429 cmp r0, r1 430 bls clear_bss 431 432#ifdef CFG_VIRTUALIZATION 433 /* 434 * Clear .nex_bss, this code obviously depends on the linker keeping 435 * start/end of .bss at least 8 byte aligned. 436 */ 437 ldr r0, =__nex_bss_start 438 ldr r1, =__nex_bss_end 439 mov r2, #0 440 mov r3, #0 441clear_nex_bss: 442 stmia r0!, {r2, r3} 443 cmp r0, r1 444 bls clear_nex_bss 445#endif 446 447#ifdef CFG_CORE_SANITIZE_KADDRESS 448 /* First initialize the entire shadow area with no access */ 449 ldr r0, =__asan_shadow_start /* start */ 450 ldr r1, =__asan_shadow_end /* limit */ 451 mov r2, #ASAN_DATA_RED_ZONE 452shadow_no_access: 453 str r2, [r0], #4 454 cmp r0, r1 455 bls shadow_no_access 456 457 /* Mark the entire stack area as OK */ 458 ldr r2, =CFG_ASAN_SHADOW_OFFSET 459 ldr r0, =__nozi_stack_start /* start */ 460 lsr r0, r0, #ASAN_BLOCK_SHIFT 461 add r0, r0, r2 462 ldr r1, =__nozi_stack_end /* limit */ 463 lsr r1, r1, #ASAN_BLOCK_SHIFT 464 add r1, r1, r2 465 mov r2, #0 466shadow_stack_access_ok: 467 strb r2, [r0], #1 468 cmp r0, r1 469 bls shadow_stack_access_ok 470#endif 471 472 set_sp 473 474 bl thread_init_thread_core_local 475 476 /* complete ARM secure MP common configuration */ 477 bl plat_primary_init_early 478 479 /* Enable Console */ 480 bl console_init 481 482#ifdef CFG_PL310 483 bl pl310_base 484 bl arm_cl2_config 485#endif 486 487 /* 488 * Invalidate dcache for all memory used during initialization to 489 * avoid nasty surprices when the cache is turned on. We must not 490 * invalidate memory not used by OP-TEE since we may invalidate 491 * entries used by for instance ARM Trusted Firmware. 492 */ 493 inval_cache_vrange(cached_mem_start, cached_mem_end) 494 495#if defined(CFG_PL310) && !defined(CFG_PL310_SIP_PROTOCOL) 496 /* Enable PL310 if not yet enabled */ 497 bl pl310_base 498 bl arm_cl2_enable 499#endif 500 501#ifdef CFG_CORE_ASLR 502 mov r0, r6 503 bl get_aslr_seed 504#else 505 mov r0, #0 506#endif 507 508 ldr r1, =boot_mmu_config 509 bl core_init_mmu_map 510 511#ifdef CFG_CORE_ASLR 512 /* 513 * Process relocation information for updating with the new offset. 514 * We're doing this now before MMU is enabled as some of the memory 515 * will become write protected. 516 */ 517 ldr r0, =boot_mmu_config 518 ldr r0, [r0, #CORE_MMU_CONFIG_LOAD_OFFSET] 519 /* 520 * Update cached_mem_end address with load offset since it was 521 * calculated before relocation. 522 */ 523 ldr r2, cached_mem_end 524 add r2, r2, r0 525 str r2, cached_mem_end 526 527 bl relocate 528#endif 529 530 bl __get_core_pos 531 bl enable_mmu 532#ifdef CFG_CORE_ASLR 533 /* 534 * Reinitialize console, since register_serial_console() has 535 * previously registered a PA and with ASLR the VA is different 536 * from the PA. 537 */ 538 bl console_init 539#endif 540 541#ifdef CFG_VIRTUALIZATION 542 /* 543 * Initialize partition tables for each partition to 544 * default_partition which has been relocated now to a different VA 545 */ 546 bl core_mmu_set_default_prtn_tbl 547#endif 548 549 mov r0, r4 /* pageable part address */ 550 mov r1, r5 /* ns-entry address */ 551 bl boot_init_primary_early 552#ifndef CFG_VIRTUALIZATION 553 mov r9, sp 554 ldr r0, =threads 555 ldr r0, [r0, #THREAD_CTX_STACK_VA_END] 556 mov sp, r0 557 bl thread_get_core_local 558 mov r8, r0 559 mov r0, #0 560 str r0, [r8, #THREAD_CORE_LOCAL_FLAGS] 561#endif 562 mov r0, r6 /* DT address */ 563 bl boot_init_primary_late 564#ifndef CFG_VIRTUALIZATION 565 mov r0, #THREAD_CLF_TMP 566 str r0, [r8, #THREAD_CORE_LOCAL_FLAGS] 567 mov sp, r9 568#endif 569 570#ifdef _CFG_CORE_STACK_PROTECTOR 571 /* Update stack canary value */ 572 bl plat_get_random_stack_canary 573 ldr r1, =__stack_chk_guard 574 str r0, [r1] 575#endif 576 577 /* 578 * In case we've touched memory that secondary CPUs will use before 579 * they have turned on their D-cache, clean and invalidate the 580 * D-cache before exiting to normal world. 581 */ 582 flush_cache_vrange(cached_mem_start, cached_mem_end) 583 584 /* release secondary boot cores and sync with them */ 585 cpu_is_ready 586 flush_cpu_semaphores 587 wait_secondary 588 589#ifdef CFG_PL310_LOCKED 590#ifdef CFG_PL310_SIP_PROTOCOL 591#error "CFG_PL310_LOCKED must not be defined when CFG_PL310_SIP_PROTOCOL=y" 592#endif 593 /* lock/invalidate all lines: pl310 behaves as if disable */ 594 bl pl310_base 595 bl arm_cl2_lockallways 596 bl pl310_base 597 bl arm_cl2_cleaninvbyway 598#endif 599 600 /* 601 * Clear current thread id now to allow the thread to be reused on 602 * next entry. Matches the thread_init_boot_thread() in 603 * boot.c. 604 */ 605#ifndef CFG_VIRTUALIZATION 606 bl thread_clr_boot_thread 607#endif 608 609#ifdef CFG_CORE_FFA 610 ldr r0, =cpu_on_handler 611 /* 612 * Compensate for the load offset since cpu_on_handler() is 613 * called with MMU off. 614 */ 615 ldr r1, boot_mmu_config + CORE_MMU_CONFIG_LOAD_OFFSET 616 sub r0, r0, r1 617 bl thread_spmc_register_secondary_ep 618 b thread_ffa_msg_wait 619#else /* CFG_CORE_FFA */ 620 621#if defined(CFG_WITH_ARM_TRUSTED_FW) 622 ldr r0, =boot_mmu_config 623 ldr r0, [r0, #CORE_MMU_CONFIG_LOAD_OFFSET] 624 ldr r1, =thread_vector_table 625 /* Pass the vector address returned from main_init */ 626 sub r1, r1, r0 627#else 628 /* realy standard bootarg #1 and #2 to non secure entry */ 629 mov r4, #0 630 mov r3, r6 /* std bootarg #2 for register R2 */ 631 mov r2, r7 /* std bootarg #1 for register R1 */ 632 mov r1, #0 633#endif /* CFG_WITH_ARM_TRUSTED_FW */ 634 635 mov r0, #TEESMC_OPTEED_RETURN_ENTRY_DONE 636 smc #0 637 /* SMC should not return */ 638 panic_at_smc_return 639#endif /* CFG_CORE_FFA */ 640END_FUNC reset_primary 641 642#ifdef CFG_BOOT_SYNC_CPU 643LOCAL_DATA sem_cpu_sync_start , : 644 .word sem_cpu_sync 645END_DATA sem_cpu_sync_start 646 647LOCAL_DATA sem_cpu_sync_end , : 648 .word sem_cpu_sync + (CFG_TEE_CORE_NB_CORE << 2) 649END_DATA sem_cpu_sync_end 650#endif 651 652LOCAL_DATA cached_mem_start , : 653 .word __text_start 654END_DATA cached_mem_start 655 656LOCAL_DATA cached_mem_end , : 657 .skip 4 658END_DATA cached_mem_end 659 660LOCAL_FUNC unhandled_cpu , : 661 wfi 662 b unhandled_cpu 663END_FUNC unhandled_cpu 664 665#ifdef CFG_CORE_ASLR 666LOCAL_FUNC relocate , : 667 push {r4-r5} 668 /* r0 holds load offset */ 669#ifdef CFG_WITH_PAGER 670 ldr r12, =__init_end 671#else 672 ldr r12, =__end 673#endif 674 ldr r2, [r12, #BOOT_EMBDATA_RELOC_OFFSET] 675 ldr r3, [r12, #BOOT_EMBDATA_RELOC_LEN] 676 677 mov_imm r1, TEE_RAM_START 678 add r2, r2, r12 /* start of relocations */ 679 add r3, r3, r2 /* end of relocations */ 680 681 /* 682 * Relocations are not formatted as Rel32, instead they are in a 683 * compressed format created by get_reloc_bin() in 684 * scripts/gen_tee_bin.py 685 * 686 * All the R_ARM_RELATIVE relocations are translated into a list 687 * list of 32-bit offsets from TEE_RAM_START. At each address a 688 * 32-bit value pointed out which increased with the load offset. 689 */ 690 691#ifdef CFG_WITH_PAGER 692 /* 693 * With pager enabled we can only relocate the pager and init 694 * parts, the rest has to be done when a page is populated. 695 */ 696 sub r12, r12, r1 697#endif 698 699 b 2f 700 /* Loop over the relocation addresses and process all entries */ 7011: ldr r4, [r2], #4 702#ifdef CFG_WITH_PAGER 703 /* Skip too large addresses */ 704 cmp r4, r12 705 bge 2f 706#endif 707 ldr r5, [r4, r1] 708 add r5, r5, r0 709 str r5, [r4, r1] 710 7112: cmp r2, r3 712 bne 1b 713 714 pop {r4-r5} 715 bx lr 716END_FUNC relocate 717#endif 718 719/* 720 * void enable_mmu(unsigned long core_pos); 721 * 722 * This function depends on being mapped with in the identity map where 723 * physical address and virtual address is the same. After MMU has been 724 * enabled the instruction pointer will be updated to execute as the new 725 * offset instead. Stack pointers and the return address are updated. 726 */ 727LOCAL_FUNC enable_mmu , : , .identity_map 728 /* r0 = core pos */ 729 adr r1, boot_mmu_config 730 731#ifdef CFG_WITH_LPAE 732 ldm r1!, {r2, r3} 733 /* 734 * r2 = ttbcr 735 * r3 = mair0 736 */ 737 write_ttbcr r2 738 write_mair0 r3 739 740 ldm r1!, {r2, r3} 741 /* 742 * r2 = ttbr0_base 743 * r3 = ttbr0_core_offset 744 */ 745 746 /* 747 * ttbr0_el1 = ttbr0_base + ttbr0_core_offset * core_pos 748 */ 749 mla r12, r0, r3, r2 750 mov r0, #0 751 write_ttbr0_64bit r12, r0 752 write_ttbr1_64bit r0, r0 753#else 754 ldm r1!, {r2, r3} 755 /* 756 * r2 = prrr 757 * r3 = nmrr 758 */ 759 write_prrr r2 760 write_nmrr r3 761 762 ldm r1!, {r2, r3} 763 /* 764 * r2 = dacr 765 * r3 = ttbcr 766 */ 767 write_dacr r2 768 write_ttbcr r3 769 770 ldm r1!, {r2} 771 /* r2 = ttbr */ 772 write_ttbr0 r2 773 write_ttbr1 r2 774 775 mov r2, #0 776 write_contextidr r2 777#endif 778 ldm r1!, {r2} 779 /* r2 = load_offset (always 0 if CFG_CORE_ASLR=n) */ 780 isb 781 782 /* Invalidate TLB */ 783 write_tlbiall 784 785 /* 786 * Make sure translation table writes have drained into memory and 787 * the TLB invalidation is complete. 788 */ 789 dsb sy 790 isb 791 792 read_sctlr r0 793 orr r0, r0, #SCTLR_M 794#ifndef CFG_WITH_LPAE 795 /* Enable Access flag (simplified access permissions) and TEX remap */ 796 orr r0, r0, #(SCTLR_AFE | SCTLR_TRE) 797#endif 798 write_sctlr r0 799 isb 800 801 /* Update vbar */ 802 read_vbar r1 803 add r1, r1, r2 804 write_vbar r1 805 isb 806 807 /* Invalidate instruction cache and branch predictor */ 808 write_iciallu 809 write_bpiall 810 isb 811 812 read_sctlr r0 813 /* Enable I and D cache */ 814 orr r0, r0, #SCTLR_I 815 orr r0, r0, #SCTLR_C 816#if defined(CFG_ENABLE_SCTLR_Z) 817 /* 818 * This is only needed on ARMv7 architecture and hence conditionned 819 * by configuration directive CFG_ENABLE_SCTLR_Z. For recent 820 * architectures, the program flow prediction is automatically 821 * enabled upon MMU enablement. 822 */ 823 orr r0, r0, #SCTLR_Z 824#endif 825 write_sctlr r0 826 isb 827 828 /* Adjust stack pointer and return address */ 829 add sp, sp, r2 830 add lr, lr, r2 831 832 bx lr 833END_FUNC enable_mmu 834 835LOCAL_DATA stack_tmp_rel , : 836 .word stack_tmp - stack_tmp_rel - STACK_TMP_GUARD 837END_DATA stack_tmp_rel 838 839LOCAL_DATA stack_tmp_stride_rel , : 840 .word stack_tmp_stride - stack_tmp_stride_rel 841END_DATA stack_tmp_stride_rel 842 843DATA boot_mmu_config , : /* struct core_mmu_config */ 844 .skip CORE_MMU_CONFIG_SIZE 845END_DATA boot_mmu_config 846 847#if defined(CFG_WITH_ARM_TRUSTED_FW) 848FUNC cpu_on_handler , : , .identity_map 849UNWIND( .cantunwind) 850 mov r4, r0 851 mov r5, r1 852 mov r6, lr 853 854 set_sctlr 855 isb 856 857 adr r0, reset_vect_table 858 write_vbar r0 859 860 mov r4, lr 861 862 bl __get_core_pos 863 bl enable_mmu 864 865 set_sp 866 867 mov r0, r4 868 mov r1, r5 869 bl boot_cpu_on_handler 870#ifdef CFG_CORE_FFA 871 b thread_ffa_msg_wait 872#else 873 bx r6 874#endif 875END_FUNC cpu_on_handler 876DECLARE_KEEP_PAGER cpu_on_handler 877 878#else /* defined(CFG_WITH_ARM_TRUSTED_FW) */ 879 880LOCAL_FUNC reset_secondary , : , .identity_map 881UNWIND( .cantunwind) 882 adr r0, reset_vect_table 883 write_vbar r0 884 885 wait_primary 886 887 set_sp 888 889#if defined (CFG_BOOT_SECONDARY_REQUEST) 890 /* if L1 is not invalidated before, do it here */ 891 mov r0, #DCACHE_OP_INV 892 bl dcache_op_level1 893#endif 894 895 bl __get_core_pos 896 bl enable_mmu 897 898 cpu_is_ready 899 900#if defined (CFG_BOOT_SECONDARY_REQUEST) 901 /* 902 * boot_core_hpen() return value (r0) is address of 903 * ns entry context structure 904 */ 905 bl boot_core_hpen 906 ldm r0, {r0, r6} 907#else 908 mov r0, r5 /* ns-entry address */ 909 mov r6, #0 910#endif 911 bl boot_init_secondary 912 913 mov r0, #TEESMC_OPTEED_RETURN_ENTRY_DONE 914 mov r1, r6 915 mov r2, #0 916 mov r3, #0 917 mov r4, #0 918 smc #0 919 /* SMC should not return */ 920 panic_at_smc_return 921END_FUNC reset_secondary 922DECLARE_KEEP_PAGER reset_secondary 923#endif /* defined(CFG_WITH_ARM_TRUSTED_FW) */ 924