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 *(.rodata .rodata.*) 96 97 /* 98 * 8 to avoid unwanted padding between __start_ta_head_section 99 * and the first structure in ta_head_section, in 64-bit 100 * builds 101 */ 102 . = ALIGN(8); 103 __start_ta_head_section = . ; 104 KEEP(*(ta_head_section)) 105 __stop_ta_head_section = . ; 106 . = ALIGN(8); 107 __start_phys_mem_map_section = . ; 108 KEEP(*(phys_mem_map_section)) 109 __end_phys_mem_map_section = . ; 110 . = ALIGN(8); 111 __start_phys_sdp_mem_section = . ; 112 KEEP(*(phys_sdp_mem_section)) 113 __end_phys_sdp_mem_section = . ; 114#endif 115 . = ALIGN(8); 116 __rodata_end = .; 117 } 118 119 .interp : { *(.interp) } 120 .hash : { *(.hash) } 121 .dynsym : { *(.dynsym) } 122 .dynstr : { *(.dynstr) } 123 .rel.text : { *(.rel.text) *(.rel.gnu.linkonce.t*) } 124 .rela.text : { *(.rela.text) *(.rela.gnu.linkonce.t*) } 125 .rel.data : { *(.rel.data) *(.rel.gnu.linkonce.d*) } 126 .rela.data : { *(.rela.data) *(.rela.gnu.linkonce.d*) } 127 .rel.rodata : { *(.rel.rodata) *(.rel.gnu.linkonce.r*) } 128 .rela.rodata : { *(.rela.rodata) *(.rela.gnu.linkonce.r*) } 129 .rel.got : { *(.rel.got) } 130 .rela.got : { *(.rela.got) } 131 .rel.ctors : { *(.rel.ctors) } 132 .rela.ctors : { *(.rela.ctors) } 133 .rel.dtors : { *(.rel.dtors) } 134 .rela.dtors : { *(.rela.dtors) } 135 .rel.init : { *(.rel.init) } 136 .rela.init : { *(.rela.init) } 137 .rel.fini : { *(.rel.fini) } 138 .rela.fini : { *(.rela.fini) } 139 .rel.bss : { *(.rel.bss) } 140 .rela.bss : { *(.rela.bss) } 141 .rel.plt : { *(.rel.plt) } 142 .rela.plt : { *(.rela.plt) } 143 .init : { *(.init) } =0x9090 144 .plt : { *(.plt) } 145 146 /* .ARM.exidx is sorted, so has to go in its own output section. */ 147 .ARM.exidx : { 148 __exidx_start = .; 149 *(.ARM.exidx* .gnu.linkonce.armexidx.*) 150 __exidx_end = .; 151 } 152 153 .ARM.extab : { 154 __extab_start = .; 155 *(.ARM.extab*) 156 __extab_end = .; 157 } 158 159 .data : ALIGN(8) { 160 /* writable data */ 161 __data_start_rom = .; 162 /* in one segment binaries, the rom data address is on top 163 of the ram data address */ 164 __early_bss_start = .; 165 *(.early_bss .early_bss.*) 166 . = ALIGN(8); 167 __early_bss_end = .; 168 __data_start = .; 169 *(.data .data.* .gnu.linkonce.d.*) 170 . = ALIGN(8); 171 } 172 173 .ctors : ALIGN(8) { 174 __ctor_list = .; 175 KEEP(*(.ctors .ctors.* .init_array .init_array.*)) 176 __ctor_end = .; 177 } 178 .dtors : ALIGN(8) { 179 __dtor_list = .; 180 KEEP(*(.dtors .dtors.* .fini_array .fini_array.*)) 181 __dtor_end = .; 182 } 183 .got : { *(.got.plt) *(.got) } 184 .dynamic : { *(.dynamic) } 185 186 __data_end = .; 187 /* unintialized data */ 188 .bss : ALIGN(8) { 189 __bss_start = .; 190 *(.bss .bss.*) 191 *(.gnu.linkonce.b.*) 192 *(COMMON) 193 . = ALIGN(8); 194 __bss_end = .; 195 } 196 197 .heap1 (NOLOAD) : { 198 /* 199 * We're keeping track of the padding added before the 200 * .nozi section so we can do something useful with 201 * this otherwise wasted memory. 202 */ 203 __heap1_start = .; 204#ifndef CFG_WITH_PAGER 205 . += CFG_CORE_HEAP_SIZE; 206#endif 207 . = ALIGN(16 * 1024); 208 __heap1_end = .; 209 } 210 211 /* 212 * Uninitialized data that shouldn't be zero initialized at 213 * runtime. 214 * 215 * L1 mmu table requires 16 KiB alignment 216 */ 217 .nozi (NOLOAD) : ALIGN(16 * 1024) { 218 __nozi_start = .; 219 KEEP(*(.nozi .nozi.*)) 220 . = ALIGN(16); 221 __nozi_end = .; 222 __nozi_stack_start = .; 223 KEEP(*(.nozi_stack)) 224 . = ALIGN(8); 225 __nozi_stack_end = .; 226 } 227 228#ifdef CFG_WITH_PAGER 229 .heap2 (NOLOAD) : { 230 __heap2_start = .; 231 /* 232 * Reserve additional memory for heap, the total should be 233 * at least CFG_CORE_HEAP_SIZE, but count what has already 234 * been reserved in .heap1 235 */ 236 . += CFG_CORE_HEAP_SIZE - (__heap1_end - __heap1_start); 237 . = ALIGN(4 * 1024); 238 __heap2_end = .; 239 } 240 241 .text_init : ALIGN(4 * 1024) { 242 __text_init_start = .; 243/* 244 * Include list of sections needed for boot initialization, this list 245 * overlaps with unpaged.ld.S but since unpaged.ld.S is first all those 246 * sections will go into the unpaged area. 247 */ 248#include <text_init.ld.S> 249 . = ALIGN(8); 250 __text_init_end = .; 251 } 252 253 .rodata_init : ALIGN(8) { 254 __rodata_init_start = .; 255#include <rodata_init.ld.S> 256 . = ALIGN(8); 257 __start_phys_mem_map_section = . ; 258 KEEP(*(phys_mem_map_section)) 259 __end_phys_mem_map_section = . ; 260 . = ALIGN(8); 261 __start_phys_sdp_mem_section = . ; 262 KEEP(*(phys_sdp_mem_section)) 263 __end_phys_sdp_mem_section = . ; 264 . = ALIGN(8); 265 __rodata_init_end = .; 266 } 267 __init_start = __text_init_start; 268 __init_end = .; 269 __init_size = __init_end - __text_init_start; 270 271 .text_pageable : ALIGN(8) { 272 __text_pageable_start = .; 273 *(.text*) 274 . = ALIGN(8); 275 __text_pageable_end = .; 276 } 277 278 .rodata_pageable : ALIGN(8) { 279 __rodata_pageable_start = .; 280 *(.rodata*) 281 /* 282 * 8 to avoid unwanted padding between __start_ta_head_section 283 * and the first structure in ta_head_section, in 64-bit 284 * builds 285 */ 286 . = ALIGN(8); 287 __start_ta_head_section = . ; 288 KEEP(*(ta_head_section)) 289 __stop_ta_head_section = . ; 290 . = ALIGN(4 * 1024); 291 __rodata_pageable_end = .; 292 } 293 294 __pageable_part_start = __rodata_init_end; 295 __pageable_part_end = __rodata_pageable_end; 296 __pageable_start = __text_init_start; 297 __pageable_end = __pageable_part_end; 298 299 /* 300 * Assign a safe spot to store the hashes of the pages before 301 * heap is initialized. 302 */ 303 __tmp_hashes_start = __rodata_init_end; 304 __tmp_hashes_size = ((__pageable_end - __pageable_start) / 305 (4 * 1024)) * 32; 306 __tmp_hashes_end = __tmp_hashes_start + __tmp_hashes_size; 307 308 __init_mem_usage = __tmp_hashes_end - CFG_TEE_LOAD_ADDR; 309 310 ASSERT(CFG_TEE_LOAD_ADDR >= CFG_TEE_RAM_START, 311 "Load address before start of physical memory") 312 ASSERT(CFG_TEE_LOAD_ADDR < (CFG_TEE_RAM_START + CFG_TEE_RAM_PH_SIZE), 313 "Load address after end of physical memory") 314 ASSERT(__tmp_hashes_end < (CFG_TEE_RAM_START + CFG_TEE_RAM_PH_SIZE), 315 "OP-TEE can't fit init part into available physical memory") 316 ASSERT((CFG_TEE_RAM_START + CFG_TEE_RAM_PH_SIZE - __init_end) > 317 1 * 4096, "Too few free pages to initialize paging") 318 319 320#endif /*CFG_WITH_PAGER*/ 321 322#ifdef CFG_CORE_SANITIZE_KADDRESS 323 . = CFG_TEE_RAM_START + (CFG_TEE_RAM_VA_SIZE * 8) / 9 - 8; 324 . = ALIGN(8); 325 .asan_shadow : { 326 __asan_shadow_start = .; 327 . += CFG_TEE_RAM_VA_SIZE / 9; 328 __asan_shadow_end = .; 329 } 330#endif /*CFG_CORE_SANITIZE_KADDRESS*/ 331 332 __end = .; 333 334#ifndef CFG_WITH_PAGER 335 __init_size = __data_end - CFG_TEE_LOAD_ADDR; 336 __init_mem_usage = __end - CFG_TEE_LOAD_ADDR; 337#endif 338 . = CFG_TEE_RAM_START + CFG_TEE_RAM_VA_SIZE; 339 _end_of_ram = .; 340 341 /DISCARD/ : { 342 /* Strip unnecessary stuff */ 343 *(.comment .note .eh_frame) 344 /* Strip meta variables */ 345 *(__keep_meta_vars*) 346 } 347 348} 349