1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2019 Fuzhou Rockchip Electronics Co., Ltd 4 */ 5 6 #include <common.h> 7 #include <sysmem.h> 8 #include <lmb.h> 9 #include <malloc.h> 10 #include <asm/io.h> 11 12 DECLARE_GLOBAL_DATA_PTR; 13 14 #define SYSMEM_MAGIC 0x4D454D53 /* "SMEM" */ 15 #define SYSMEM_ALLOC_ANYWHERE 0 16 #define SYSMEM_ALLOC_NO_ALIGN 1 17 18 #define SYSMEM_I(fmt, args...) printf("Sysmem: "fmt, ##args) 19 #define SYSMEM_W(fmt, args...) printf("Sysmem Warn: "fmt, ##args) 20 #define SYSMEM_E(fmt, args...) printf("Sysmem Error: "fmt, ##args) 21 #define SYSMEM_D(fmt, args...) debug("Sysmem Debug: "fmt, ##args) 22 23 struct memcheck { 24 uint32_t magic; 25 }; 26 27 /* Global for platform, must in data section */ 28 struct sysmem plat_sysmem __section(".data") = { 29 .has_initf = false, 30 .has_initr = false, 31 }; 32 33 bool sysmem_has_init(void) 34 { 35 return gd->flags & GD_FLG_RELOC ? 36 plat_sysmem.has_initr : plat_sysmem.has_initf; 37 } 38 39 void sysmem_dump(void) 40 { 41 struct sysmem *sysmem = &plat_sysmem; 42 struct lmb *lmb = &sysmem->lmb; 43 struct memblock *mem; 44 struct memcheck *check; 45 struct list_head *node; 46 ulong memory_size = 0; 47 ulong reserved_size = 0; 48 ulong allocated_size = 0; 49 bool overflow = false; 50 ulong i; 51 52 if (!sysmem_has_init()) 53 return; 54 55 printf("\nsysmem_dump_all:\n"); 56 57 /* Memory pool */ 58 printf(" --------------------------------------------------------------------\n"); 59 for (i = 0; i < lmb->memory.cnt; i++) { 60 memory_size += lmb->memory.region[i].size; 61 printf(" memory.rgn[%ld].addr = 0x%08lx - 0x%08lx (size: 0x%08lx)\n", i, 62 (ulong)lmb->memory.region[i].base, 63 (ulong)lmb->memory.region[i].base + 64 (ulong)lmb->memory.region[i].size, 65 (ulong)lmb->memory.region[i].size); 66 } 67 printf("\n memory.total = 0x%08lx (%ld MiB. %ld KiB)\n", 68 (ulong)memory_size, 69 SIZE_MB((ulong)memory_size), 70 SIZE_KB((ulong)memory_size)); 71 72 /* Allocated */ 73 i = 0; 74 printf(" --------------------------------------------------------------------\n"); 75 list_for_each(node, &sysmem->allocated_head) { 76 mem = list_entry(node, struct memblock, node); 77 allocated_size += mem->size; 78 if (mem->attr.flags & M_ATTR_OFC) { 79 check = (struct memcheck *) 80 (mem->base + mem->size - sizeof(*check)); 81 overflow = (check->magic != SYSMEM_MAGIC); 82 } else if (mem->attr.flags & M_ATTR_HOFC) { 83 check = (struct memcheck *) 84 (mem->base - sizeof(*check)); 85 overflow = (check->magic != SYSMEM_MAGIC); 86 } else { 87 overflow = false; 88 } 89 90 printf(" allocated.rgn[%ld].name = \"%s\" %s\n", 91 i, mem->attr.name, overflow ? " <Overflow!>" : ""); 92 printf(" .addr = 0x%08lx - 0x%08lx (size: 0x%08lx)\n", 93 (ulong)mem->base, (ulong)(mem->base + mem->size), 94 (ulong)mem->size); 95 i++; 96 } 97 98 printf("\n malloc_r: %d MiB, malloc_f: %d KiB\n", 99 SIZE_MB(CONFIG_SYS_MALLOC_LEN), SIZE_KB(CONFIG_SYS_MALLOC_F_LEN)); 100 printf("\n allocated.total = 0x%08lx (%ld MiB. %ld KiB)\n", 101 (ulong)allocated_size, 102 SIZE_MB((ulong)allocated_size), 103 SIZE_KB((ulong)allocated_size)); 104 105 /* LMB core reserved */ 106 printf(" --------------------------------------------------------------------\n"); 107 reserved_size = 0; 108 for (i = 0; i < lmb->reserved.cnt; i++) { 109 reserved_size += lmb->reserved.region[i].size; 110 printf(" LMB.reserved[%ld].addr = 0x%08lx - 0x%08lx (size: 0x%08lx)\n", i, 111 (ulong)lmb->reserved.region[i].base, 112 (ulong)lmb->reserved.region[i].base + 113 (ulong)lmb->reserved.region[i].size, 114 (ulong)lmb->reserved.region[i].size); 115 } 116 117 printf("\n reserved.core.total = 0x%08lx (%ld MiB. %ld KiB)\n", 118 (ulong)reserved_size, 119 SIZE_MB((ulong)reserved_size), 120 SIZE_KB((ulong)reserved_size)); 121 printf(" --------------------------------------------------------------------\n\n"); 122 } 123 124 static inline int sysmem_is_overlap(phys_addr_t base1, phys_size_t size1, 125 phys_addr_t base2, phys_size_t size2) 126 { 127 return ((base1 < (base2 + size2)) && (base2 < (base1 + size1))); 128 } 129 130 static int sysmem_add(phys_addr_t base, phys_size_t size) 131 { 132 struct sysmem *sysmem = &plat_sysmem; 133 int ret; 134 135 if (!size) 136 return -EINVAL; 137 138 ret = lmb_add(&sysmem->lmb, base, size); 139 if (ret < 0) 140 SYSMEM_E("Failed to add sysmem at 0x%08lx for 0x%08lx size\n", 141 (ulong)base, (ulong)size); 142 143 return (ret >= 0) ? 0 : ret; 144 } 145 146 static const char *sysmem_alias2name(const char *name, int *id) 147 { 148 const char *alias; 149 int n, i, j; 150 int match = 0; 151 152 for (i = 0; i < MEMBLK_ID_MAX; i++) { 153 /* Pirmary name */ 154 if (mem_attr[i].name && !strcasecmp(mem_attr[i].name, name)) { 155 match = 1; 156 goto finish; 157 } 158 159 /* Alias name */ 160 alias = mem_attr[i].alias[0]; 161 if (!alias) 162 continue; 163 164 n = ARRAY_SIZE(mem_attr[i].alias); 165 for (j = 0; j < n; j++, alias++) { 166 if (alias && !strcasecmp(alias, name)) { 167 match = 1; 168 goto finish; 169 } 170 } 171 } 172 173 finish: 174 if (match) { 175 *id = i; 176 return mem_attr[i].name; 177 } 178 179 return name; 180 } 181 182 static void *sysmem_alloc_align_base(enum memblk_id id, 183 const char *mem_name, 184 phys_addr_t base, 185 phys_size_t size, 186 ulong align) 187 { 188 struct sysmem *sysmem = &plat_sysmem; 189 struct memblk_attr attr; 190 struct memblock *mem; 191 struct memcheck *check; 192 struct list_head *node; 193 const char *name; 194 phys_addr_t paddr; 195 phys_addr_t alloc_base; 196 phys_size_t alloc_size; 197 phys_addr_t bank_base; 198 phys_size_t bank_size; 199 bool req_overlap = false; /* Only for kernel reserved-memory */ 200 int i; 201 202 if (!sysmem_has_init()) 203 goto out; 204 205 if (id == MEMBLK_ID_BY_NAME || id == MEMBLK_ID_FDT_RESV) { 206 if (!mem_name) { 207 SYSMEM_E("NULL name for alloc sysmem\n"); 208 goto out; 209 } else if (id == MEMBLK_ID_FDT_RESV) { 210 211 /* 212 * Allow fdt reserved memory to overlap with the region 213 * only used in U-Boot, like: stack, fastboot, u-boot... 214 * these regions are marked as M_ATTR_OVERLAP in flags. 215 * 216 * Here we check whether it overlaps with others, if 217 * so, set req_overlap as true. 218 */ 219 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 220 if (!gd->bd->bi_dram[i].size) 221 continue; 222 223 bank_base = gd->bd->bi_dram[i].start; 224 bank_size = gd->bd->bi_dram[i].size; 225 if (sysmem_is_overlap(base, size, 226 bank_base, bank_size)) { 227 req_overlap = true; 228 break; 229 } 230 } 231 232 /* 233 * If this request region is out size of all available 234 * region, ignore and return success. 235 */ 236 if (!req_overlap) 237 return (void *)base; 238 } 239 240 /* Find name, id and attr by outer mem_name */ 241 name = sysmem_alias2name(mem_name, (int *)&id); 242 attr = mem_attr[id]; 243 if (!attr.name) 244 attr.name = strdup(name); 245 } else if (id > MEMBLK_ID_UNK && id < MEMBLK_ID_MAX) { 246 attr = mem_attr[id]; 247 name = attr.name; 248 } else { 249 SYSMEM_E("Unsupport memblk id %d for alloc sysmem\n", id); 250 goto out; 251 } 252 253 if (!size) { 254 SYSMEM_E("\"%s\" size is 0 for alloc sysmem\n", name); 255 goto out; 256 } 257 258 if (!IS_ALIGNED(base, 4)) { 259 SYSMEM_E("\"%s\" base=0x%08lx is not 4-byte aligned\n", 260 name, (ulong)base); 261 goto out; 262 } 263 264 /* Must be 4-byte aligned */ 265 size = ALIGN(size, 4); 266 267 SYSMEM_D("Enter alloc: \"%s\" 0x%08lx - 0x%08lx\n", 268 name, (ulong)base, (ulong)(base + size)); 269 270 /* Already allocated ? */ 271 list_for_each(node, &sysmem->allocated_head) { 272 mem = list_entry(node, struct memblock, node); 273 SYSMEM_D("Has allcated: %s, 0x%08lx - 0x%08lx\n", 274 mem->attr.name, (ulong)mem->base, 275 (ulong)(mem->base + mem->size)); 276 if (!strcmp(mem->attr.name, name)) { 277 /* Allow double alloc for same but smaller region */ 278 if (mem->base <= base && mem->size >= size) 279 return (void *)base; 280 281 SYSMEM_E("Failed to double alloc for existence \"%s\"\n", name); 282 goto out; 283 } else if (sysmem_is_overlap(mem->base, mem->size, base, size)) { 284 /* 285 * If this new alloc region expects overlap and the old 286 * region is also allowed to be overlap, just do reserve. 287 */ 288 if (req_overlap && mem->attr.flags & M_ATTR_OVERLAP) { 289 if (lmb_reserve(&sysmem->lmb, base, size)) 290 SYSMEM_E("Failed to overlap alloc \"%s\" " 291 "at 0x%08lx - 0x%08lx\n", 292 name, (ulong)base, 293 (ulong)(base + size)); 294 return (void *)base; 295 } 296 297 SYSMEM_E("\"%s\" (0x%08lx - 0x%08lx) alloc is " 298 "overlap with existence \"%s\" (0x%08lx - " 299 "0x%08lx)\n", 300 name, (ulong)base, (ulong)(base + size), 301 mem->attr.name, (ulong)mem->base, 302 (ulong)(mem->base + mem->size)); 303 goto out; 304 } 305 } 306 307 /* Add overflow check magic ? */ 308 if (attr.flags & M_ATTR_OFC) 309 alloc_size = size + sizeof(*check); 310 else 311 alloc_size = size; 312 313 /* Alloc anywhere ? */ 314 if (base == SYSMEM_ALLOC_ANYWHERE) 315 alloc_base = base; 316 else 317 alloc_base = base + alloc_size; /* LMB is align down alloc mechanism */ 318 319 paddr = lmb_alloc_base(&sysmem->lmb, alloc_size, align, alloc_base); 320 if (paddr) { 321 if ((paddr == base) || (base == SYSMEM_ALLOC_ANYWHERE)) { 322 mem = malloc(sizeof(*mem)); 323 if (!mem) { 324 SYSMEM_E("No memory for \"%s\" alloc sysmem\n", name); 325 goto out; 326 } 327 328 mem->base = paddr; 329 mem->size = alloc_size; 330 mem->attr = attr; 331 sysmem->allocated_cnt++; 332 list_add_tail(&mem->node, &sysmem->allocated_head); 333 334 /* Add overflow check magic */ 335 if (mem->attr.flags & M_ATTR_OFC) { 336 check = (struct memcheck *)(paddr + size); 337 check->magic = SYSMEM_MAGIC; 338 } else if (mem->attr.flags & M_ATTR_HOFC) { 339 check = (struct memcheck *)(paddr - sizeof(*check)); 340 check->magic = SYSMEM_MAGIC; 341 } 342 } else { 343 SYSMEM_E("Failed to alloc \"%s\" expect at 0x%08lx - 0x%08lx " 344 "but at 0x%08lx - x%08lx\n", 345 name, (ulong)base, (ulong)(base + size), 346 (ulong)paddr, (ulong)(paddr + size)); 347 /* Free what we don't want allocated region */ 348 if (lmb_free(&sysmem->lmb, paddr, alloc_size)) 349 SYSMEM_E("Failed to free \"%s\"\n", name); 350 351 goto out; 352 } 353 } else { 354 SYSMEM_E("Failed to alloc \"%s\" at 0x%08lx - 0x%08lx\n", 355 name, (ulong)base, (ulong)(base + size)); 356 } 357 358 SYSMEM_D("Exit alloc: \"%s\", paddr=0x%08lx, size=0x%08lx, align=0x%x, anywhere=%d\n", 359 name, (ulong)paddr, (ulong)size, (u32)align, !base); 360 361 return (void *)paddr; 362 363 out: 364 return (attr.flags & M_ATTR_PEEK) ? (void *)base : NULL; 365 } 366 367 void *sysmem_alloc_base(enum memblk_id id, phys_addr_t base, phys_size_t size) 368 { 369 void *paddr; 370 371 paddr = sysmem_alloc_align_base(id, 372 NULL, 373 base, 374 size, 375 SYSMEM_ALLOC_NO_ALIGN); 376 if (!paddr) 377 sysmem_dump(); 378 379 return paddr; 380 } 381 382 void *sysmem_alloc_base_by_name(const char *name, 383 phys_addr_t base, phys_size_t size) 384 { 385 void *paddr; 386 387 paddr = sysmem_alloc_align_base(MEMBLK_ID_BY_NAME, 388 name, 389 base, 390 size, 391 SYSMEM_ALLOC_NO_ALIGN); 392 if (!paddr) 393 sysmem_dump(); 394 395 return paddr; 396 } 397 398 void *sysmem_fdt_reserve_alloc_base(const char *name, 399 phys_addr_t base, phys_size_t size) 400 { 401 void *paddr; 402 403 paddr = sysmem_alloc_align_base(MEMBLK_ID_FDT_RESV, 404 name, 405 base, 406 size, 407 SYSMEM_ALLOC_NO_ALIGN); 408 if (!paddr) 409 sysmem_dump(); 410 411 return paddr; 412 } 413 414 int sysmem_free(phys_addr_t base) 415 { 416 struct sysmem *sysmem = &plat_sysmem; 417 struct memblock *mem; 418 struct list_head *node; 419 int ret, found = 0; 420 421 if (!sysmem_has_init()) 422 return -ENOSYS; 423 424 /* Find existence */ 425 list_for_each(node, &sysmem->allocated_head) { 426 mem = list_entry(node, struct memblock, node); 427 if (mem->base == base) { 428 found = 1; 429 break; 430 } 431 } 432 433 if (!found) { 434 SYSMEM_E("Failed to free no allocated sysmem at 0x%08lx\n", 435 (ulong)base); 436 return -EINVAL; 437 } 438 439 ret = lmb_free(&sysmem->lmb, mem->base, mem->size); 440 if (ret >= 0) { 441 SYSMEM_D("Free: \"%s\" 0x%08lx - 0x%08lx\n", 442 mem->attr.name, (ulong)mem->base, 443 (ulong)(mem->base + mem->size)); 444 sysmem->allocated_cnt--; 445 list_del(&mem->node); 446 free(mem); 447 } else { 448 SYSMEM_E("Failed to free \"%s\" at 0x%08lx\n", 449 mem->attr.name, (ulong)base); 450 } 451 452 return (ret >= 0) ? 0 : ret; 453 } 454 455 int sysmem_initr(void) 456 { 457 return sysmem_init(); 458 } 459 460 int sysmem_init(void) 461 { 462 struct sysmem *sysmem = &plat_sysmem; 463 phys_addr_t mem_start; 464 phys_size_t mem_size; 465 int ret; 466 467 lmb_init(&sysmem->lmb); 468 INIT_LIST_HEAD(&sysmem->allocated_head); 469 sysmem->allocated_cnt = 0; 470 if (gd->flags & GD_FLG_RELOC) { 471 sysmem->has_initr = true; 472 } else { 473 SYSMEM_I("init\n"); 474 sysmem->has_initf = true; 475 } 476 477 /* Add all available system memory */ 478 #ifdef CONFIG_NR_DRAM_BANKS 479 int i; 480 481 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 482 if (!gd->bd->bi_dram[i].size) 483 continue; 484 485 ret = sysmem_add(gd->bd->bi_dram[i].start, 486 gd->bd->bi_dram[i].size); 487 if (ret) { 488 SYSMEM_E("Failed to add sysmem from bi_dram[%d]\n", i); 489 goto fail; 490 } 491 } 492 #else 493 mem_start = env_get_bootm_low(); 494 mem_size = env_get_bootm_size(); 495 ret = sysmem_add(mem_start, mem_size); 496 if (ret) { 497 SYSMEM_E("Failed to add sysmem from bootm_low/size\n"); 498 goto fail; 499 } 500 #endif 501 /* Reserved for board */ 502 ret = board_sysmem_reserve(sysmem); 503 if (ret) { 504 SYSMEM_E("Failed to reserve sysmem for board\n"); 505 goto fail; 506 } 507 508 /* Reserved for U-boot framework: 'reserve_xxx()' */ 509 mem_start = gd->start_addr_sp; 510 mem_size = gd->ram_top - mem_start; 511 if (!sysmem_alloc_base(MEMBLK_ID_UBOOT, mem_start, mem_size)) { 512 SYSMEM_E("Failed to reserve sysmem for U-Boot framework\n"); 513 ret = -ENOMEM; 514 goto fail; 515 } 516 517 /* Reserved for U-Boot stack */ 518 mem_start = gd->start_addr_sp - CONFIG_SYS_STACK_SIZE; 519 mem_size = CONFIG_SYS_STACK_SIZE; 520 if (!sysmem_alloc_base(MEMBLK_ID_STACK, mem_start, mem_size)) { 521 SYSMEM_E("Failed to reserve sysmem for stack\n"); 522 ret = -ENOMEM; 523 goto fail; 524 } 525 526 return 0; 527 528 fail: 529 if (ret && !(gd->flags & GD_FLG_RELOC)) { 530 sysmem_dump(); 531 SYSMEM_W("Maybe malloc size %d MiB is too large?\n\n", 532 SIZE_MB(CONFIG_SYS_MALLOC_LEN)); 533 } 534 535 return ret; 536 } 537 538 __weak int board_sysmem_reserve(struct sysmem *sysmem) 539 { 540 /* please define platform specific board_sysmem_reserve() */ 541 return 0; 542 } 543 544 static int do_dump_sysmem(cmd_tbl_t *cmdtp, int flag, 545 int argc, char *const argv[]) 546 { 547 sysmem_dump(); 548 return 0; 549 } 550 551 U_BOOT_CMD( 552 dump_sysmem, 1, 1, do_dump_sysmem, 553 "Dump sysmem layout", 554 "" 555 ); 556