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 return NULL; 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 return NULL; 209 } else if (id == MEMBLK_ID_FDT_RESV) { 210 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 211 if (!gd->bd->bi_dram[i].size) 212 continue; 213 214 bank_base = gd->bd->bi_dram[i].start; 215 bank_size = gd->bd->bi_dram[i].size; 216 if (sysmem_is_overlap(base, size, 217 bank_base, bank_size)) { 218 req_overlap = true; 219 break; 220 } 221 } 222 223 if (!req_overlap) 224 return (void *)base; 225 } 226 name = sysmem_alias2name(mem_name, (int *)&id); 227 attr = mem_attr[id]; 228 if (!attr.name) 229 attr.name = strdup(name); 230 } else if (id > MEMBLK_ID_UNK && id < MEMBLK_ID_MAX) { 231 attr = mem_attr[id]; 232 name = attr.name; 233 } else { 234 SYSMEM_E("Unsupport memblk id %d for alloc sysmem\n", id); 235 return NULL; 236 } 237 238 if (!size) { 239 SYSMEM_E("\"%s\" size is 0 for alloc sysmem\n", name); 240 return NULL; 241 } 242 243 if (!IS_ALIGNED(base, 4)) { 244 SYSMEM_E("\"%s\" base=0x%08lx is not 4-byte aligned\n", 245 name, (ulong)base); 246 return NULL; 247 } 248 249 /* Must be 4-byte aligned */ 250 size = ALIGN(size, 4); 251 252 SYSMEM_D("Enter alloc: \"%s\" 0x%08lx - 0x%08lx\n", 253 name, (ulong)base, (ulong)(base + size)); 254 255 /* Already allocated ? */ 256 list_for_each(node, &sysmem->allocated_head) { 257 mem = list_entry(node, struct memblock, node); 258 SYSMEM_D("Has allcated: %s, 0x%08lx - 0x%08lx\n", 259 mem->attr.name, (ulong)mem->base, 260 (ulong)(mem->base + mem->size)); 261 if (!strcmp(mem->attr.name, name)) { 262 if (mem->base <= base && mem->size >= size) 263 return (void *)base; 264 265 SYSMEM_E("Failed to double alloc for existence \"%s\"\n", name); 266 return NULL; 267 } else if (sysmem_is_overlap(mem->base, mem->size, base, size)) { 268 if (req_overlap && mem->attr.flags & M_ATTR_OVERLAP) { 269 if (lmb_reserve(&sysmem->lmb, base, size)) 270 SYSMEM_E("Failed to overlap alloc \"%s\" " 271 "at 0x%08lx - 0x%08lx\n", 272 name, (ulong)base, 273 (ulong)(base + size)); 274 return (void *)base; 275 } 276 277 SYSMEM_E("\"%s\" (0x%08lx - 0x%08lx) alloc is " 278 "overlap with existence \"%s\" (0x%08lx - " 279 "0x%08lx)\n", 280 name, (ulong)base, (ulong)(base + size), 281 mem->attr.name, (ulong)mem->base, 282 (ulong)(mem->base + mem->size)); 283 return NULL; 284 } 285 } 286 287 /* Add overflow check magic ? */ 288 if (attr.flags & M_ATTR_OFC) 289 alloc_size = size + sizeof(*check); 290 else 291 alloc_size = size; 292 293 /* Alloc anywhere ? */ 294 if (base == SYSMEM_ALLOC_ANYWHERE) 295 alloc_base = base; 296 else 297 alloc_base = base + alloc_size; /* LMB is align down alloc mechanism */ 298 299 paddr = lmb_alloc_base(&sysmem->lmb, alloc_size, align, alloc_base); 300 if (paddr) { 301 if ((paddr == base) || (base == SYSMEM_ALLOC_ANYWHERE)) { 302 mem = malloc(sizeof(*mem)); 303 if (!mem) { 304 SYSMEM_E("No memory for \"%s\" alloc sysmem\n", name); 305 return NULL; 306 } 307 308 mem->base = paddr; 309 mem->size = alloc_size; 310 mem->attr = attr; 311 sysmem->allocated_cnt++; 312 list_add_tail(&mem->node, &sysmem->allocated_head); 313 314 if (mem->attr.flags & M_ATTR_OFC) { 315 check = (struct memcheck *)(paddr + size); 316 check->magic = SYSMEM_MAGIC; 317 } else if (mem->attr.flags & M_ATTR_HOFC) { 318 check = (struct memcheck *)(paddr - sizeof(*check)); 319 check->magic = SYSMEM_MAGIC; 320 } 321 } else { 322 SYSMEM_E("Failed to alloc \"%s\" expect at 0x%08lx - 0x%08lx " 323 "but at 0x%08lx - x%08lx\n", 324 name, (ulong)base, (ulong)(base + size), 325 (ulong)paddr, (ulong)(paddr + size)); 326 if (lmb_free(&sysmem->lmb, paddr, alloc_size)) 327 SYSMEM_E("Failed to free \"%s\"\n", name); 328 329 return NULL; 330 } 331 } else { 332 SYSMEM_E("Failed to alloc \"%s\" at 0x%08lx - 0x%08lx\n", 333 name, (ulong)base, (ulong)(base + size)); 334 } 335 336 SYSMEM_D("Exit alloc: \"%s\", paddr=0x%08lx, size=0x%08lx, align=0x%x, anywhere=%d\n", 337 name, (ulong)paddr, (ulong)size, (u32)align, !base); 338 339 return (void *)paddr; 340 } 341 342 void *sysmem_alloc_base(enum memblk_id id, phys_addr_t base, phys_size_t size) 343 { 344 void *paddr; 345 346 paddr = sysmem_alloc_align_base(id, 347 NULL, 348 base, 349 size, 350 SYSMEM_ALLOC_NO_ALIGN); 351 if (!paddr) 352 sysmem_dump(); 353 354 return paddr; 355 } 356 357 void *sysmem_alloc_base_by_name(const char *name, 358 phys_addr_t base, phys_size_t size) 359 { 360 void *paddr; 361 362 paddr = sysmem_alloc_align_base(MEMBLK_ID_BY_NAME, 363 name, 364 base, 365 size, 366 SYSMEM_ALLOC_NO_ALIGN); 367 if (!paddr) 368 sysmem_dump(); 369 370 return paddr; 371 } 372 373 void *sysmem_fdt_reserve_alloc_base(const char *name, 374 phys_addr_t base, phys_size_t size) 375 { 376 void *paddr; 377 378 paddr = sysmem_alloc_align_base(MEMBLK_ID_FDT_RESV, 379 name, 380 base, 381 size, 382 SYSMEM_ALLOC_NO_ALIGN); 383 if (!paddr) 384 sysmem_dump(); 385 386 return paddr; 387 } 388 389 int sysmem_free(phys_addr_t base) 390 { 391 struct sysmem *sysmem = &plat_sysmem; 392 struct memblock *mem; 393 struct list_head *node; 394 int ret, found = 0; 395 396 if (!sysmem_has_init()) 397 return -ENOSYS; 398 399 /* Find existence */ 400 list_for_each(node, &sysmem->allocated_head) { 401 mem = list_entry(node, struct memblock, node); 402 if (mem->base == base) { 403 found = 1; 404 break; 405 } 406 } 407 408 if (!found) { 409 SYSMEM_E("Failed to free no allocated sysmem at 0x%08lx\n", 410 (ulong)base); 411 return -EINVAL; 412 } 413 414 ret = lmb_free(&sysmem->lmb, mem->base, mem->size); 415 if (ret >= 0) { 416 SYSMEM_D("Free: \"%s\" 0x%08lx - 0x%08lx\n", 417 mem->attr.name, (ulong)mem->base, 418 (ulong)(mem->base + mem->size)); 419 sysmem->allocated_cnt--; 420 list_del(&mem->node); 421 free(mem); 422 } else { 423 SYSMEM_E("Failed to free \"%s\" at 0x%08lx\n", 424 mem->attr.name, (ulong)base); 425 } 426 427 return (ret >= 0) ? 0 : ret; 428 } 429 430 int sysmem_initr(void) 431 { 432 return sysmem_init(); 433 } 434 435 int sysmem_init(void) 436 { 437 struct sysmem *sysmem = &plat_sysmem; 438 phys_addr_t mem_start; 439 phys_size_t mem_size; 440 int ret; 441 442 lmb_init(&sysmem->lmb); 443 INIT_LIST_HEAD(&sysmem->allocated_head); 444 sysmem->allocated_cnt = 0; 445 if (gd->flags & GD_FLG_RELOC) { 446 sysmem->has_initr = true; 447 } else { 448 SYSMEM_I("init\n"); 449 sysmem->has_initf = true; 450 } 451 452 /* Add all available system memory */ 453 #ifdef CONFIG_NR_DRAM_BANKS 454 int i; 455 456 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 457 if (!gd->bd->bi_dram[i].size) 458 continue; 459 460 ret = sysmem_add(gd->bd->bi_dram[i].start, 461 gd->bd->bi_dram[i].size); 462 if (ret) { 463 SYSMEM_E("Failed to add sysmem from bi_dram[%d]\n", i); 464 goto fail; 465 } 466 } 467 #else 468 mem_start = env_get_bootm_low(); 469 mem_size = env_get_bootm_size(); 470 ret = sysmem_add(mem_start, mem_size); 471 if (ret) { 472 SYSMEM_E("Failed to add sysmem from bootm_low/size\n"); 473 goto fail; 474 } 475 #endif 476 /* Reserved for board */ 477 ret = board_sysmem_reserve(sysmem); 478 if (ret) { 479 SYSMEM_E("Failed to reserve sysmem for board\n"); 480 goto fail; 481 } 482 483 /* Reserved for U-boot framework: 'reserve_xxx()' */ 484 mem_start = gd->start_addr_sp; 485 mem_size = gd->ram_top - mem_start; 486 if (!sysmem_alloc_base(MEMBLK_ID_UBOOT, mem_start, mem_size)) { 487 SYSMEM_E("Failed to reserve sysmem for U-Boot framework\n"); 488 ret = -ENOMEM; 489 goto fail; 490 } 491 492 /* Reserved for U-Boot stack */ 493 mem_start = gd->start_addr_sp - CONFIG_SYS_STACK_SIZE; 494 mem_size = CONFIG_SYS_STACK_SIZE; 495 if (!sysmem_alloc_base(MEMBLK_ID_STACK, mem_start, mem_size)) { 496 SYSMEM_E("Failed to reserve sysmem for stack\n"); 497 ret = -ENOMEM; 498 goto fail; 499 } 500 501 return 0; 502 503 fail: 504 if (ret && !(gd->flags & GD_FLG_RELOC)) { 505 sysmem_dump(); 506 SYSMEM_W("Maybe malloc size %d MiB is too large?\n\n", 507 SIZE_MB(CONFIG_SYS_MALLOC_LEN)); 508 } 509 510 return ret; 511 } 512 513 __weak int board_sysmem_reserve(struct sysmem *sysmem) 514 { 515 /* please define platform specific board_sysmem_reserve() */ 516 return 0; 517 } 518 519 static int do_dump_sysmem(cmd_tbl_t *cmdtp, int flag, 520 int argc, char *const argv[]) 521 { 522 sysmem_dump(); 523 return 0; 524 } 525 526 U_BOOT_CMD( 527 dump_sysmem, 1, 1, do_dump_sysmem, 528 "Dump sysmem layout", 529 "" 530 ); 531