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 bool req_overlap = false; 198 199 if (!sysmem_has_init()) 200 return NULL; 201 202 if (id == MEMBLK_ID_BY_NAME || id == MEMBLK_ID_FDT_RESV) { 203 if (!mem_name) { 204 SYSMEM_E("NULL name for alloc sysmem\n"); 205 return NULL; 206 } else if (id == MEMBLK_ID_FDT_RESV) { 207 req_overlap = true; 208 if (base >= gd->ram_top) 209 return (void *)base; 210 } 211 name = sysmem_alias2name(mem_name, (int *)&id); 212 attr = mem_attr[id]; 213 if (!attr.name) 214 attr.name = strdup(name); 215 } else if (id > MEMBLK_ID_UNK && id < MEMBLK_ID_MAX) { 216 attr = mem_attr[id]; 217 name = attr.name; 218 } else { 219 SYSMEM_E("Unsupport memblk id %d for alloc sysmem\n", id); 220 return NULL; 221 } 222 223 if (!size) { 224 SYSMEM_E("\"%s\" size is 0 for alloc sysmem\n", name); 225 return NULL; 226 } 227 228 if (!IS_ALIGNED(base, 4)) { 229 SYSMEM_E("\"%s\" base=0x%08lx is not 4-byte aligned\n", 230 name, (ulong)base); 231 return NULL; 232 } 233 234 /* Must be 4-byte aligned */ 235 size = ALIGN(size, 4); 236 237 SYSMEM_D("Enter alloc: \"%s\" 0x%08lx - 0x%08lx\n", 238 name, (ulong)base, (ulong)(base + size)); 239 240 /* Already allocated ? */ 241 list_for_each(node, &sysmem->allocated_head) { 242 mem = list_entry(node, struct memblock, node); 243 SYSMEM_D("Has allcated: %s, 0x%08lx - 0x%08lx\n", 244 mem->attr.name, (ulong)mem->base, 245 (ulong)(mem->base + mem->size)); 246 if (!strcmp(mem->attr.name, name)) { 247 if (mem->base <= base && mem->size >= size) 248 return (void *)base; 249 250 SYSMEM_E("Failed to double alloc for existence \"%s\"\n", name); 251 return NULL; 252 } else if (sysmem_is_overlap(mem->base, mem->size, base, size)) { 253 if (req_overlap && mem->attr.flags & M_ATTR_OVERLAP) { 254 if (lmb_reserve(&sysmem->lmb, base, size)) 255 SYSMEM_E("Failed to overlap alloc \"%s\" " 256 "at 0x%08lx - 0x%08lx\n", 257 name, (ulong)base, 258 (ulong)(base + size)); 259 return (void *)base; 260 } 261 262 SYSMEM_E("\"%s\" (0x%08lx - 0x%08lx) alloc is " 263 "overlap with existence \"%s\" (0x%08lx - " 264 "0x%08lx)\n", 265 name, (ulong)base, (ulong)(base + size), 266 mem->attr.name, (ulong)mem->base, 267 (ulong)(mem->base + mem->size)); 268 return NULL; 269 } 270 } 271 272 /* Add overflow check magic ? */ 273 if (attr.flags & M_ATTR_OFC) 274 alloc_size = size + sizeof(*check); 275 else 276 alloc_size = size; 277 278 /* Alloc anywhere ? */ 279 if (base == SYSMEM_ALLOC_ANYWHERE) 280 alloc_base = base; 281 else 282 alloc_base = base + alloc_size; /* LMB is align down alloc mechanism */ 283 284 paddr = lmb_alloc_base(&sysmem->lmb, alloc_size, align, alloc_base); 285 if (paddr) { 286 if ((paddr == base) || (base == SYSMEM_ALLOC_ANYWHERE)) { 287 mem = malloc(sizeof(*mem)); 288 if (!mem) { 289 SYSMEM_E("No memory for \"%s\" alloc sysmem\n", name); 290 return NULL; 291 } 292 293 mem->base = paddr; 294 mem->size = alloc_size; 295 mem->attr = attr; 296 sysmem->allocated_cnt++; 297 list_add_tail(&mem->node, &sysmem->allocated_head); 298 299 if (mem->attr.flags & M_ATTR_OFC) { 300 check = (struct memcheck *)(paddr + size); 301 check->magic = SYSMEM_MAGIC; 302 } else if (mem->attr.flags & M_ATTR_HOFC) { 303 check = (struct memcheck *)(paddr - sizeof(*check)); 304 check->magic = SYSMEM_MAGIC; 305 } 306 } else { 307 SYSMEM_E("Failed to alloc \"%s\" expect at 0x%08lx - 0x%08lx " 308 "but at 0x%08lx - x%08lx\n", 309 name, (ulong)base, (ulong)(base + size), 310 (ulong)paddr, (ulong)(paddr + size)); 311 if (lmb_free(&sysmem->lmb, paddr, alloc_size)) 312 SYSMEM_E("Failed to free \"%s\"\n", name); 313 314 return NULL; 315 } 316 } else { 317 SYSMEM_E("Failed to alloc \"%s\" at 0x%08lx - 0x%08lx\n", 318 name, (ulong)base, (ulong)(base + size)); 319 } 320 321 SYSMEM_D("Exit alloc: \"%s\", paddr=0x%08lx, size=0x%08lx, align=0x%x, anywhere=%d\n", 322 name, (ulong)paddr, (ulong)size, (u32)align, !base); 323 324 return (void *)paddr; 325 } 326 327 void *sysmem_alloc_base(enum memblk_id id, phys_addr_t base, phys_size_t size) 328 { 329 void *paddr; 330 331 paddr = sysmem_alloc_align_base(id, 332 NULL, 333 base, 334 size, 335 SYSMEM_ALLOC_NO_ALIGN); 336 if (!paddr) 337 sysmem_dump(); 338 339 return paddr; 340 } 341 342 void *sysmem_alloc_base_by_name(const char *name, 343 phys_addr_t base, phys_size_t size) 344 { 345 void *paddr; 346 347 paddr = sysmem_alloc_align_base(MEMBLK_ID_BY_NAME, 348 name, 349 base, 350 size, 351 SYSMEM_ALLOC_NO_ALIGN); 352 if (!paddr) 353 sysmem_dump(); 354 355 return paddr; 356 } 357 358 void *sysmem_fdt_reserve_alloc_base(const char *name, 359 phys_addr_t base, phys_size_t size) 360 { 361 void *paddr; 362 363 paddr = sysmem_alloc_align_base(MEMBLK_ID_FDT_RESV, 364 name, 365 base, 366 size, 367 SYSMEM_ALLOC_NO_ALIGN); 368 if (!paddr) 369 sysmem_dump(); 370 371 return paddr; 372 } 373 374 int sysmem_free(phys_addr_t base) 375 { 376 struct sysmem *sysmem = &plat_sysmem; 377 struct memblock *mem; 378 struct list_head *node; 379 int ret, found = 0; 380 381 if (!sysmem_has_init()) 382 return -ENOSYS; 383 384 /* Find existence */ 385 list_for_each(node, &sysmem->allocated_head) { 386 mem = list_entry(node, struct memblock, node); 387 if (mem->base == base) { 388 found = 1; 389 break; 390 } 391 } 392 393 if (!found) { 394 SYSMEM_E("Failed to free no allocated sysmem at 0x%08lx\n", 395 (ulong)base); 396 return -EINVAL; 397 } 398 399 ret = lmb_free(&sysmem->lmb, mem->base, mem->size); 400 if (ret >= 0) { 401 SYSMEM_D("Free: \"%s\" 0x%08lx - 0x%08lx\n", 402 mem->attr.name, (ulong)mem->base, 403 (ulong)(mem->base + mem->size)); 404 sysmem->allocated_cnt--; 405 list_del(&mem->node); 406 free(mem); 407 } else { 408 SYSMEM_E("Failed to free \"%s\" at 0x%08lx\n", 409 mem->attr.name, (ulong)base); 410 } 411 412 return (ret >= 0) ? 0 : ret; 413 } 414 415 int sysmem_initr(void) 416 { 417 return sysmem_init(); 418 } 419 420 int sysmem_init(void) 421 { 422 struct sysmem *sysmem = &plat_sysmem; 423 phys_addr_t mem_start; 424 phys_size_t mem_size; 425 int ret; 426 427 lmb_init(&sysmem->lmb); 428 INIT_LIST_HEAD(&sysmem->allocated_head); 429 sysmem->allocated_cnt = 0; 430 if (gd->flags & GD_FLG_RELOC) { 431 sysmem->has_initr = true; 432 } else { 433 SYSMEM_I("init\n"); 434 sysmem->has_initf = true; 435 } 436 437 /* Add all available system memory */ 438 #ifdef CONFIG_NR_DRAM_BANKS 439 int i; 440 441 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 442 if (!gd->bd->bi_dram[i].size) 443 continue; 444 445 ret = sysmem_add(gd->bd->bi_dram[i].start, 446 gd->bd->bi_dram[i].size); 447 if (ret) { 448 SYSMEM_E("Failed to add sysmem from bi_dram[%d]\n", i); 449 goto fail; 450 } 451 } 452 #else 453 mem_start = env_get_bootm_low(); 454 mem_size = env_get_bootm_size(); 455 ret = sysmem_add(mem_start, mem_size); 456 if (ret) { 457 SYSMEM_E("Failed to add sysmem from bootm_low/size\n"); 458 goto fail; 459 } 460 #endif 461 /* Reserved for board */ 462 ret = board_sysmem_reserve(sysmem); 463 if (ret) { 464 SYSMEM_E("Failed to reserve sysmem for board\n"); 465 goto fail; 466 } 467 468 /* Reserved for U-boot framework: 'reserve_xxx()' */ 469 mem_start = gd->start_addr_sp; 470 mem_size = gd->ram_top - mem_start; 471 if (!sysmem_alloc_base(MEMBLK_ID_UBOOT, mem_start, mem_size)) { 472 SYSMEM_E("Failed to reserve sysmem for U-Boot framework\n"); 473 ret = -ENOMEM; 474 goto fail; 475 } 476 477 /* Reserved for U-Boot stack */ 478 mem_start = gd->start_addr_sp - CONFIG_SYS_STACK_SIZE; 479 mem_size = CONFIG_SYS_STACK_SIZE; 480 if (!sysmem_alloc_base(MEMBLK_ID_STACK, mem_start, mem_size)) { 481 SYSMEM_E("Failed to reserve sysmem for stack\n"); 482 ret = -ENOMEM; 483 goto fail; 484 } 485 486 return 0; 487 488 fail: 489 if (ret && !(gd->flags & GD_FLG_RELOC)) { 490 sysmem_dump(); 491 SYSMEM_W("Maybe malloc size %d MiB is too large?\n\n", 492 SIZE_MB(CONFIG_SYS_MALLOC_LEN)); 493 } 494 495 return ret; 496 } 497 498 __weak int board_sysmem_reserve(struct sysmem *sysmem) 499 { 500 /* please define platform specific board_sysmem_reserve() */ 501 return 0; 502 } 503 504 static int do_dump_sysmem(cmd_tbl_t *cmdtp, int flag, 505 int argc, char *const argv[]) 506 { 507 sysmem_dump(); 508 return 0; 509 } 510 511 U_BOOT_CMD( 512 dump_sysmem, 1, 1, do_dump_sysmem, 513 "Dump sysmem layout", 514 "" 515 ); 516