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