1/* SPDX-License-Identifier: (BSD-2-Clause AND MIT) */ 2/* 3 * Copyright (c) 2014, Linaro Limited 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright notice, 13 * this list of conditions and the following disclaimer in the documentation 14 * and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29/* 30 * Copyright (c) 2008-2010 Travis Geiselbrecht 31 * 32 * Permission is hereby granted, free of charge, to any person obtaining 33 * a copy of this software and associated documentation files 34 * (the "Software"), to deal in the Software without restriction, 35 * including without limitation the rights to use, copy, modify, merge, 36 * publish, distribute, sublicense, and/or sell copies of the Software, 37 * and to permit persons to whom the Software is furnished to do so, 38 * subject to the following conditions: 39 * 40 * The above copyright notice and this permission notice shall be 41 * included in all copies or substantial portions of the Software. 42 * 43 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 44 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 45 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 46 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 47 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 48 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 49 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 50 */ 51 52#include <mm/core_mmu.h> 53#include <platform_config.h> 54#include <util.h> 55 56/* 57 * TEE_RAM_VA_START: The start virtual address of the TEE RAM 58 * TEE_TEXT_VA_START: The start virtual address of the OP-TEE text 59 */ 60#define TEE_RAM_VA_START TEE_RAM_START 61#define TEE_TEXT_VA_START (TEE_RAM_VA_START + \ 62 (TEE_LOAD_ADDR - TEE_RAM_START)) 63 64OUTPUT_FORMAT(CFG_KERN_LINKER_FORMAT) 65OUTPUT_ARCH(CFG_KERN_LINKER_ARCH) 66 67ENTRY(_start) 68SECTIONS 69{ 70 . = TEE_TEXT_VA_START; 71#ifdef ARM32 72 ASSERT(!(TEE_TEXT_VA_START & 31), "text start should align to 32bytes") 73#endif 74#ifdef ARM64 75 ASSERT(!(TEE_TEXT_VA_START & 127), "text start should align to 128bytes") 76#endif 77 __text_start = .; 78 79 /* 80 * Memory between TEE_TEXT_VA_START and page aligned rounded down 81 * value will be mapped with unpaged "text" section attributes: 82 * likely to be read-only/executable. 83 */ 84 __flatmap_unpg_rx_start = ROUNDDOWN(__text_start, SMALL_PAGE_SIZE); 85 86 .text : { 87 KEEP(*(.text._start)) 88 KEEP(*(.text.init .text.plat_cpu_reset_early \ 89 .text.reset .text.reset_primary .text.unhandled_cpu \ 90 .text.__assert_flat_mapped_range)) 91 92#ifdef CFG_WITH_PAGER 93 *(.text) 94/* Include list of sections needed for paging */ 95#include <text_unpaged.ld.S> 96#else 97 *(.text .text.*) 98#endif 99 *(.sram.text.glue_7* .gnu.linkonce.t.*) 100 . = ALIGN(8); 101 } 102 __text_end = .; 103 104#ifdef CFG_CORE_RODATA_NOEXEC 105 . = ALIGN(SMALL_PAGE_SIZE); 106#endif 107 __flatmap_unpg_rx_size = . - __flatmap_unpg_rx_start; 108 __flatmap_unpg_ro_start = .; 109 110 .rodata : ALIGN(8) { 111 __rodata_start = .; 112 *(.gnu.linkonce.r.*) 113#ifdef CFG_WITH_PAGER 114 *(.rodata .rodata.__unpaged) 115#include <rodata_unpaged.ld.S> 116#else 117#ifdef CFG_DT 118 __rodata_dtdrv_start = .; 119 KEEP(*(.rodata.dtdrv)) 120 __rodata_dtdrv_end = .; 121#endif 122#ifdef CFG_EARLY_TA 123 . = ALIGN(8); 124 __rodata_early_ta_start = .; 125 KEEP(*(.rodata.early_ta)) 126 __rodata_early_ta_end = .; 127#endif 128 129 *(.rodata .rodata.*) 130 . = ALIGN(8); 131 KEEP(*(SORT(.scattered_array*))); 132#endif 133 . = ALIGN(8); 134 __rodata_end = .; 135 } 136 137 .interp : { *(.interp) } 138 .hash : { *(.hash) } 139 .dynsym : { *(.dynsym) } 140 .dynstr : { *(.dynstr) } 141 .rel.text : { *(.rel.text) *(.rel.gnu.linkonce.t*) } 142 .rela.text : { *(.rela.text) *(.rela.gnu.linkonce.t*) } 143 .rel.data : { *(.rel.data) *(.rel.gnu.linkonce.d*) } 144 .rela.data : { *(.rela.data) *(.rela.gnu.linkonce.d*) } 145 .rel.rodata : { *(.rel.rodata) *(.rel.gnu.linkonce.r*) } 146 .rela.rodata : { *(.rela.rodata) *(.rela.gnu.linkonce.r*) } 147 .rel.got : { *(.rel.got) } 148 .rela.got : { *(.rela.got) } 149 .rel.ctors : { *(.rel.ctors) } 150 .rela.ctors : { *(.rela.ctors) } 151 .rel.dtors : { *(.rel.dtors) } 152 .rela.dtors : { *(.rela.dtors) } 153 .rel.init : { *(.rel.init) } 154 .rela.init : { *(.rela.init) } 155 .rel.fini : { *(.rel.fini) } 156 .rela.fini : { *(.rela.fini) } 157 .rel.bss : { *(.rel.bss) } 158 .rela.bss : { *(.rela.bss) } 159 .rel.plt : { *(.rel.plt) } 160 .rela.plt : { *(.rela.plt) } 161 .init : { *(.init) } =0x9090 162 .plt : { *(.plt) } 163 164 /* .ARM.exidx is sorted, so has to go in its own output section. */ 165 .ARM.exidx : { 166 __exidx_start = .; 167 *(.ARM.exidx* .gnu.linkonce.armexidx.*) 168 __exidx_end = .; 169 } 170 171 .ARM.extab : { 172 __extab_start = .; 173 *(.ARM.extab*) 174 __extab_end = .; 175 } 176 177 /* Start page aligned read-write memory */ 178#ifdef CFG_CORE_RWDATA_NOEXEC 179 . = ALIGN(SMALL_PAGE_SIZE); 180#endif 181 __flatmap_unpg_ro_size = . - __flatmap_unpg_ro_start; 182 __flatmap_unpg_rw_start = .; 183 184 .data : ALIGN(8) { 185 /* writable data */ 186 __data_start_rom = .; 187 /* in one segment binaries, the rom data address is on top 188 of the ram data address */ 189 __data_start = .; 190 *(.data .data.* .gnu.linkonce.d.*) 191 . = ALIGN(8); 192 } 193 194 .ctors : ALIGN(8) { 195 __ctor_list = .; 196 KEEP(*(.ctors .ctors.* .init_array .init_array.*)) 197 __ctor_end = .; 198 } 199 .dtors : ALIGN(8) { 200 __dtor_list = .; 201 KEEP(*(.dtors .dtors.* .fini_array .fini_array.*)) 202 __dtor_end = .; 203 } 204 .got : { *(.got.plt) *(.got) } 205 .dynamic : { *(.dynamic) } 206 207 /* unintialized data */ 208 .bss : { 209 __data_end = .; 210 __bss_start = .; 211 *(.bss .bss.*) 212 *(.gnu.linkonce.b.*) 213 *(COMMON) 214 . = ALIGN(8); 215 __bss_end = .; 216 } 217 218 .heap1 (NOLOAD) : { 219 /* 220 * We're keeping track of the padding added before the 221 * .nozi section so we can do something useful with 222 * this otherwise wasted memory. 223 */ 224 __heap1_start = .; 225#ifndef CFG_WITH_PAGER 226 . += CFG_CORE_HEAP_SIZE; 227#endif 228 . = ALIGN(16 * 1024); 229 __heap1_end = .; 230 } 231 232 /* 233 * Uninitialized data that shouldn't be zero initialized at 234 * runtime. 235 * 236 * L1 mmu table requires 16 KiB alignment 237 */ 238 .nozi (NOLOAD) : { 239 __nozi_start = .; 240 ASSERT(!(__nozi_start & (16 * 1024 - 1)), "align nozi to 16kB"); 241 242 KEEP(*(.nozi .nozi.*)) 243 . = ALIGN(16); 244 __nozi_end = .; 245 __nozi_stack_start = .; 246 KEEP(*(.nozi_stack .nozi_stack.*)) 247 . = ALIGN(8); 248 __nozi_stack_end = .; 249 } 250 251#ifdef CFG_WITH_PAGER 252 .heap2 (NOLOAD) : { 253 __heap2_start = .; 254 /* 255 * Reserve additional memory for heap, the total should be 256 * at least CFG_CORE_HEAP_SIZE, but count what has already 257 * been reserved in .heap1 258 */ 259 . += CFG_CORE_HEAP_SIZE - (__heap1_end - __heap1_start); 260 . = ALIGN(SMALL_PAGE_SIZE); 261 __heap2_end = .; 262 } 263 264 /* Start page aligned read-only memory */ 265 __flatmap_unpg_rw_size = . - __flatmap_unpg_rw_start; 266 267 __init_start = .; 268 __flatmap_init_rx_start = .; 269 270 ASSERT(!(__flatmap_init_rx_start & (SMALL_PAGE_SIZE - 1)), 271 "read-write memory is not paged aligned") 272 273 .text_init : { 274/* 275 * Include list of sections needed for boot initialization, this list 276 * overlaps with unpaged.ld.S but since unpaged.ld.S is first all those 277 * sections will go into the unpaged area. 278 */ 279#include <text_init.ld.S> 280 KEEP(*(.text.startup.*)); 281 /* Make sure constructor functions are available during init */ 282 KEEP(*(.text._GLOBAL__sub_*)); 283 . = ALIGN(8); 284 } 285 286#ifdef CFG_CORE_RODATA_NOEXEC 287 . = ALIGN(SMALL_PAGE_SIZE); 288#endif 289 __flatmap_init_rx_size = . - __flatmap_init_rx_start; 290 __flatmap_init_ro_start = .; 291 292 .rodata_init : { 293#include <rodata_init.ld.S> 294 295 . = ALIGN(8); 296 KEEP(*(SORT(.scattered_array*))); 297 298 . = ALIGN(8); 299 __rodata_init_end = .; 300 } 301 __rodata_init_end = .; 302 303 __init_end = ROUNDUP(__rodata_init_end, SMALL_PAGE_SIZE); 304 __init_size = __init_end - __init_start; 305 306 /* vcore flat map stops here. No need to page align, rodata follows. */ 307 __flatmap_init_ro_size = __init_end - __flatmap_init_ro_start; 308 309 .rodata_pageable : ALIGN(8) { 310#ifdef CFG_DT 311 __rodata_dtdrv_start = .; 312 KEEP(*(.rodata.dtdrv)) 313 __rodata_dtdrv_end = .; 314#endif 315#ifdef CFG_EARLY_TA 316 . = ALIGN(8); 317 __rodata_early_ta_start = .; 318 KEEP(*(.rodata.early_ta)) 319 __rodata_early_ta_end = .; 320#endif 321 *(.rodata*) 322 } 323 324#ifdef CFG_CORE_RODATA_NOEXEC 325 . = ALIGN(SMALL_PAGE_SIZE); 326#endif 327 328 .text_pageable : ALIGN(8) { 329 *(.text*) 330 . = ALIGN(SMALL_PAGE_SIZE); 331 } 332 333 __pageable_part_end = .; 334 __pageable_part_start = __init_end; 335 __pageable_start = __init_start; 336 __pageable_end = __pageable_part_end; 337 338 /* 339 * Assign a safe spot to store the hashes of the pages before 340 * heap is initialized. 341 */ 342 __tmp_hashes_start = __init_end; 343 __tmp_hashes_size = ((__pageable_end - __pageable_start) / 344 SMALL_PAGE_SIZE) * 32; 345 __tmp_hashes_end = __tmp_hashes_start + __tmp_hashes_size; 346 347 __init_mem_usage = __tmp_hashes_end - TEE_TEXT_VA_START; 348 349 ASSERT(TEE_LOAD_ADDR >= TEE_RAM_START, 350 "Load address before start of physical memory") 351 ASSERT(TEE_LOAD_ADDR < (TEE_RAM_START + TEE_RAM_PH_SIZE), 352 "Load address after end of physical memory") 353 ASSERT(__tmp_hashes_end < (TEE_RAM_VA_START + TEE_RAM_PH_SIZE), 354 "OP-TEE can't fit init part into available physical memory") 355 ASSERT((TEE_RAM_VA_START + TEE_RAM_PH_SIZE - __init_end) > 356 SMALL_PAGE_SIZE, "Too few free pages to initialize paging") 357 358 359#endif /*CFG_WITH_PAGER*/ 360 361#ifdef CFG_CORE_SANITIZE_KADDRESS 362 . = TEE_RAM_VA_START + (TEE_RAM_VA_SIZE * 8) / 9 - 8; 363 . = ALIGN(8); 364 .asan_shadow : { 365 __asan_shadow_start = .; 366 . += TEE_RAM_VA_SIZE / 9; 367 __asan_shadow_end = .; 368 __asan_shadow_size = __asan_shadow_end - __asan_shadow_start; 369 } 370#endif /*CFG_CORE_SANITIZE_KADDRESS*/ 371 372 __end = .; 373 374#ifndef CFG_WITH_PAGER 375 __init_size = __data_end - TEE_TEXT_VA_START; 376 __init_mem_usage = __end - TEE_TEXT_VA_START; 377#endif 378 /* 379 * Guard against moving the location counter backwards in the assignment 380 * below. 381 */ 382 ASSERT(. <= (TEE_RAM_VA_START + TEE_RAM_VA_SIZE), 383 "TEE_RAM_VA_SIZE is too small") 384 . = TEE_RAM_VA_START + TEE_RAM_VA_SIZE; 385 386 _end_of_ram = .; 387 388#ifndef CFG_WITH_PAGER 389 __flatmap_unpg_rw_size = _end_of_ram - __flatmap_unpg_rw_start; 390#endif 391 392 /DISCARD/ : { 393 /* Strip unnecessary stuff */ 394 *(.comment .note .eh_frame) 395 /* Strip meta variables */ 396 *(__keep_meta_vars*) 397 } 398 399} 400 401/* Unpaged read-only memories */ 402__vcore_unpg_rx_start = __flatmap_unpg_rx_start; 403__vcore_unpg_ro_start = __flatmap_unpg_ro_start; 404#ifdef CFG_CORE_RODATA_NOEXEC 405__vcore_unpg_rx_size = __flatmap_unpg_rx_size; 406__vcore_unpg_ro_size = __flatmap_unpg_ro_size; 407#else 408__vcore_unpg_rx_size = __flatmap_unpg_rx_size + __flatmap_unpg_ro_size; 409__vcore_unpg_ro_size = 0; 410#endif 411 412/* Unpaged read-write memory */ 413__vcore_unpg_rw_start = __flatmap_unpg_rw_start; 414__vcore_unpg_rw_size = __flatmap_unpg_rw_size; 415 416#ifdef CFG_WITH_PAGER 417/* 418 * Core init mapping shall cover up to end of the physical RAM. 419 * This is required since the hash table is appended to the 420 * binary data after the firmware build sequence. 421 */ 422#define __FLATMAP_PAGER_TRAILING_SPACE \ 423 (TEE_RAM_START + TEE_RAM_PH_SIZE - \ 424 (__flatmap_init_ro_start + __flatmap_init_ro_size)) 425 426/* Paged/init read-only memories */ 427__vcore_init_rx_start = __flatmap_init_rx_start; 428__vcore_init_ro_start = __flatmap_init_ro_start; 429#ifdef CFG_CORE_RODATA_NOEXEC 430__vcore_init_rx_size = __flatmap_init_rx_size; 431__vcore_init_ro_size = __flatmap_init_ro_size + __FLATMAP_PAGER_TRAILING_SPACE; 432#else 433__vcore_init_rx_size = __flatmap_init_rx_size + __flatmap_init_ro_size + 434 __FLATMAP_PAGER_TRAILING_SPACE; 435__vcore_init_ro_size = 0; 436#endif /* CFG_CORE_RODATA_NOEXEC */ 437#endif /* CFG_WITH_PAGER */ 438 439#ifdef CFG_CORE_SANITIZE_KADDRESS 440__asan_map_start = (__asan_shadow_start / SMALL_PAGE_SIZE) * 441 SMALL_PAGE_SIZE; 442__asan_map_end = ((__asan_shadow_end - 1) / SMALL_PAGE_SIZE) * 443 SMALL_PAGE_SIZE + SMALL_PAGE_SIZE; 444__asan_map_size = __asan_map_end - __asan_map_start; 445#endif /*CFG_CORE_SANITIZE_KADDRESS*/ 446