1/* 2 * Copyright (c) 2014, Linaro Limited 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28/* 29 * Copyright (c) 2008-2010 Travis Geiselbrecht 30 * 31 * Permission is hereby granted, free of charge, to any person obtaining 32 * a copy of this software and associated documentation files 33 * (the "Software"), to deal in the Software without restriction, 34 * including without limitation the rights to use, copy, modify, merge, 35 * publish, distribute, sublicense, and/or sell copies of the Software, 36 * and to permit persons to whom the Software is furnished to do so, 37 * subject to the following conditions: 38 * 39 * The above copyright notice and this permission notice shall be 40 * included in all copies or substantial portions of the Software. 41 * 42 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 43 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 44 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 45 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 46 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 47 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 48 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 49 */ 50 51#include <platform_config.h> 52 53OUTPUT_FORMAT(CFG_KERN_LINKER_FORMAT) 54OUTPUT_ARCH(CFG_KERN_LINKER_ARCH) 55 56ENTRY(_start) 57SECTIONS 58{ 59 . = CFG_TEE_LOAD_ADDR; 60 61 /* text/read-only data */ 62 .text : { 63 __text_start = .; 64 KEEP(*(.text.boot.vectab1)) 65 KEEP(*(.text.boot.vectab2)) 66 KEEP(*(.text.boot)) 67 68 . = ALIGN(8); 69 __initcall_start = .; 70 KEEP(*(.initcall1)) 71 KEEP(*(.initcall2)) 72 KEEP(*(.initcall3)) 73 KEEP(*(.initcall4)) 74 __initcall_end = .; 75 76#ifdef CFG_WITH_PAGER 77 *(.text) 78/* Include list of sections needed for paging */ 79#include <text_unpaged.ld.S> 80#else 81 *(.text .text.*) 82#endif 83 *(.sram.text.glue_7* .gnu.linkonce.t.*) 84 . = ALIGN(8); 85 __text_end = .; 86 } 87 88 .rodata : ALIGN(8) { 89 __rodata_start = .; 90 *(.gnu.linkonce.r.*) 91#ifdef CFG_WITH_PAGER 92 *(.rodata .rodata.__unpaged) 93#include <rodata_unpaged.ld.S> 94#else 95#ifdef CFG_DT 96 __rodata_dtdrv_start = .; 97 KEEP(*(.rodata.dtdrv)) 98 __rodata_dtdrv_end = .; 99#endif 100 *(.rodata .rodata.*) 101 102 /* 103 * 8 to avoid unwanted padding between __start_ta_head_section 104 * and the first structure in ta_head_section, in 64-bit 105 * builds 106 */ 107 . = ALIGN(8); 108 __start_ta_head_section = . ; 109 KEEP(*(ta_head_section)) 110 __stop_ta_head_section = . ; 111 . = ALIGN(8); 112 __start_phys_mem_map_section = . ; 113 KEEP(*(phys_mem_map_section)) 114 __end_phys_mem_map_section = . ; 115 . = ALIGN(8); 116 __start_phys_sdp_mem_section = . ; 117 KEEP(*(phys_sdp_mem_section)) 118 __end_phys_sdp_mem_section = . ; 119#endif 120 . = ALIGN(8); 121 __rodata_end = .; 122 } 123 124 .interp : { *(.interp) } 125 .hash : { *(.hash) } 126 .dynsym : { *(.dynsym) } 127 .dynstr : { *(.dynstr) } 128 .rel.text : { *(.rel.text) *(.rel.gnu.linkonce.t*) } 129 .rela.text : { *(.rela.text) *(.rela.gnu.linkonce.t*) } 130 .rel.data : { *(.rel.data) *(.rel.gnu.linkonce.d*) } 131 .rela.data : { *(.rela.data) *(.rela.gnu.linkonce.d*) } 132 .rel.rodata : { *(.rel.rodata) *(.rel.gnu.linkonce.r*) } 133 .rela.rodata : { *(.rela.rodata) *(.rela.gnu.linkonce.r*) } 134 .rel.got : { *(.rel.got) } 135 .rela.got : { *(.rela.got) } 136 .rel.ctors : { *(.rel.ctors) } 137 .rela.ctors : { *(.rela.ctors) } 138 .rel.dtors : { *(.rel.dtors) } 139 .rela.dtors : { *(.rela.dtors) } 140 .rel.init : { *(.rel.init) } 141 .rela.init : { *(.rela.init) } 142 .rel.fini : { *(.rel.fini) } 143 .rela.fini : { *(.rela.fini) } 144 .rel.bss : { *(.rel.bss) } 145 .rela.bss : { *(.rela.bss) } 146 .rel.plt : { *(.rel.plt) } 147 .rela.plt : { *(.rela.plt) } 148 .init : { *(.init) } =0x9090 149 .plt : { *(.plt) } 150 151 /* .ARM.exidx is sorted, so has to go in its own output section. */ 152 .ARM.exidx : { 153 __exidx_start = .; 154 *(.ARM.exidx* .gnu.linkonce.armexidx.*) 155 __exidx_end = .; 156 } 157 158 .ARM.extab : { 159 __extab_start = .; 160 *(.ARM.extab*) 161 __extab_end = .; 162 } 163 164 .data : ALIGN(8) { 165 /* writable data */ 166 __data_start_rom = .; 167 /* in one segment binaries, the rom data address is on top 168 of the ram data address */ 169 __early_bss_start = .; 170 *(.early_bss .early_bss.*) 171 . = ALIGN(8); 172 __early_bss_end = .; 173 __data_start = .; 174 *(.data .data.* .gnu.linkonce.d.*) 175 . = ALIGN(8); 176 } 177 178 .ctors : ALIGN(8) { 179 __ctor_list = .; 180 KEEP(*(.ctors .ctors.* .init_array .init_array.*)) 181 __ctor_end = .; 182 } 183 .dtors : ALIGN(8) { 184 __dtor_list = .; 185 KEEP(*(.dtors .dtors.* .fini_array .fini_array.*)) 186 __dtor_end = .; 187 } 188 .got : { *(.got.plt) *(.got) } 189 .dynamic : { *(.dynamic) } 190 191 __data_end = .; 192 /* unintialized data */ 193 .bss : ALIGN(8) { 194 __bss_start = .; 195 *(.bss .bss.*) 196 *(.gnu.linkonce.b.*) 197 *(COMMON) 198 . = ALIGN(8); 199 __bss_end = .; 200 } 201 202 .heap1 (NOLOAD) : { 203 /* 204 * We're keeping track of the padding added before the 205 * .nozi section so we can do something useful with 206 * this otherwise wasted memory. 207 */ 208 __heap1_start = .; 209#ifndef CFG_WITH_PAGER 210 . += CFG_CORE_HEAP_SIZE; 211#endif 212 . = ALIGN(16 * 1024); 213 __heap1_end = .; 214 } 215 216 /* 217 * Uninitialized data that shouldn't be zero initialized at 218 * runtime. 219 * 220 * L1 mmu table requires 16 KiB alignment 221 */ 222 .nozi (NOLOAD) : ALIGN(16 * 1024) { 223 __nozi_start = .; 224 KEEP(*(.nozi .nozi.*)) 225 . = ALIGN(16); 226 __nozi_end = .; 227 __nozi_stack_start = .; 228 KEEP(*(.nozi_stack)) 229 . = ALIGN(8); 230 __nozi_stack_end = .; 231 } 232 233#ifdef CFG_WITH_PAGER 234 .heap2 (NOLOAD) : { 235 __heap2_start = .; 236 /* 237 * Reserve additional memory for heap, the total should be 238 * at least CFG_CORE_HEAP_SIZE, but count what has already 239 * been reserved in .heap1 240 */ 241 . += CFG_CORE_HEAP_SIZE - (__heap1_end - __heap1_start); 242 . = ALIGN(4 * 1024); 243 __heap2_end = .; 244 } 245 246 .text_init : ALIGN(4 * 1024) { 247 __text_init_start = .; 248/* 249 * Include list of sections needed for boot initialization, this list 250 * overlaps with unpaged.ld.S but since unpaged.ld.S is first all those 251 * sections will go into the unpaged area. 252 */ 253#include <text_init.ld.S> 254 . = ALIGN(8); 255 __text_init_end = .; 256 } 257 258 .rodata_init : ALIGN(8) { 259 __rodata_init_start = .; 260#include <rodata_init.ld.S> 261 . = ALIGN(8); 262 __start_phys_mem_map_section = . ; 263 KEEP(*(phys_mem_map_section)) 264 __end_phys_mem_map_section = . ; 265 . = ALIGN(8); 266 __start_phys_sdp_mem_section = . ; 267 KEEP(*(phys_sdp_mem_section)) 268 __end_phys_sdp_mem_section = . ; 269 . = ALIGN(8); 270 __rodata_init_end = .; 271 } 272 __init_start = __text_init_start; 273 __init_end = .; 274 __init_size = __init_end - __text_init_start; 275 276 .text_pageable : ALIGN(8) { 277 __text_pageable_start = .; 278 *(.text*) 279 . = ALIGN(8); 280 __text_pageable_end = .; 281 } 282 283 .rodata_pageable : ALIGN(8) { 284 __rodata_pageable_start = .; 285#ifdef CFG_DT 286 __rodata_dtdrv_start = .; 287 KEEP(*(.rodata.dtdrv)) 288 __rodata_dtdrv_end = .; 289#endif 290 *(.rodata*) 291 /* 292 * 8 to avoid unwanted padding between __start_ta_head_section 293 * and the first structure in ta_head_section, in 64-bit 294 * builds 295 */ 296 . = ALIGN(8); 297 __start_ta_head_section = . ; 298 KEEP(*(ta_head_section)) 299 __stop_ta_head_section = . ; 300 . = ALIGN(4 * 1024); 301 __rodata_pageable_end = .; 302 } 303 304 __pageable_part_start = __rodata_init_end; 305 __pageable_part_end = __rodata_pageable_end; 306 __pageable_start = __text_init_start; 307 __pageable_end = __pageable_part_end; 308 309 /* 310 * Assign a safe spot to store the hashes of the pages before 311 * heap is initialized. 312 */ 313 __tmp_hashes_start = __rodata_init_end; 314 __tmp_hashes_size = ((__pageable_end - __pageable_start) / 315 (4 * 1024)) * 32; 316 __tmp_hashes_end = __tmp_hashes_start + __tmp_hashes_size; 317 318 __init_mem_usage = __tmp_hashes_end - CFG_TEE_LOAD_ADDR; 319 320 ASSERT(CFG_TEE_LOAD_ADDR >= CFG_TEE_RAM_START, 321 "Load address before start of physical memory") 322 ASSERT(CFG_TEE_LOAD_ADDR < (CFG_TEE_RAM_START + CFG_TEE_RAM_PH_SIZE), 323 "Load address after end of physical memory") 324 ASSERT(__tmp_hashes_end < (CFG_TEE_RAM_START + CFG_TEE_RAM_PH_SIZE), 325 "OP-TEE can't fit init part into available physical memory") 326 ASSERT((CFG_TEE_RAM_START + CFG_TEE_RAM_PH_SIZE - __init_end) > 327 1 * 4096, "Too few free pages to initialize paging") 328 329 330#endif /*CFG_WITH_PAGER*/ 331 332#ifdef CFG_CORE_SANITIZE_KADDRESS 333 . = CFG_TEE_RAM_START + (CFG_TEE_RAM_VA_SIZE * 8) / 9 - 8; 334 . = ALIGN(8); 335 .asan_shadow : { 336 __asan_shadow_start = .; 337 . += CFG_TEE_RAM_VA_SIZE / 9; 338 __asan_shadow_end = .; 339 } 340#endif /*CFG_CORE_SANITIZE_KADDRESS*/ 341 342 __end = .; 343 344#ifndef CFG_WITH_PAGER 345 __init_size = __data_end - CFG_TEE_LOAD_ADDR; 346 __init_mem_usage = __end - CFG_TEE_LOAD_ADDR; 347#endif 348 . = CFG_TEE_RAM_START + CFG_TEE_RAM_VA_SIZE; 349 _end_of_ram = .; 350 351 /DISCARD/ : { 352 /* Strip unnecessary stuff */ 353 *(.comment .note .eh_frame) 354 /* Strip meta variables */ 355 *(__keep_meta_vars*) 356 } 357 358} 359