1 /* 2 * (C) Copyright 2019 Rockchip Electronics Co., Ltd 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <blk.h> 9 #include <boot_rkimg.h> 10 #include <dm.h> 11 #include <errno.h> 12 #include <malloc.h> 13 #include <nand.h> 14 #include <part.h> 15 #include <dm/device-internal.h> 16 17 #define MTD_PART_NAND_HEAD "mtdparts=" 18 #define MTD_PART_INFO_MAX_SIZE 512 19 #define MTD_SINGLE_PART_INFO_MAX_SIZE 40 20 21 #define MTD_BLK_TABLE_BLOCK_UNKNOWN (-2) 22 #define MTD_BLK_TABLE_BLOCK_SHIFT (-1) 23 24 static int *mtd_map_blk_table; 25 26 int mtd_blk_map_table_init(struct blk_desc *desc, 27 loff_t offset, 28 size_t length) 29 { 30 u32 blk_total, blk_begin, blk_cnt; 31 struct mtd_info *mtd = NULL; 32 int i, j; 33 34 if (!desc) 35 return -ENODEV; 36 37 if (desc->devnum == BLK_MTD_NAND) { 38 #if defined(CONFIG_NAND) && !defined(CONFIG_SPL_BUILD) 39 mtd = dev_get_priv(desc->bdev->parent); 40 #endif 41 } else if (desc->devnum == BLK_MTD_SPI_NAND) { 42 #if defined(CONFIG_MTD_SPI_NAND) && !defined(CONFIG_SPL_BUILD) 43 mtd = desc->bdev->priv; 44 #endif 45 } 46 47 if (!mtd) { 48 return -ENODEV; 49 } else { 50 blk_total = (mtd->size + mtd->erasesize - 1) >> mtd->erasesize_shift; 51 if (!mtd_map_blk_table) { 52 mtd_map_blk_table = (int *)malloc(blk_total * 4); 53 memset(mtd_map_blk_table, MTD_BLK_TABLE_BLOCK_UNKNOWN, 54 blk_total * 4); 55 } 56 57 blk_begin = (u32)offset >> mtd->erasesize_shift; 58 blk_cnt = ((u32)((offset & mtd->erasesize_mask) + length) >> mtd->erasesize_shift); 59 if ((blk_begin + blk_cnt) > blk_total) 60 blk_cnt = blk_total - blk_begin; 61 62 if (mtd_map_blk_table[blk_begin] != MTD_BLK_TABLE_BLOCK_UNKNOWN) 63 return 0; 64 65 j = 0; 66 /* should not across blk_cnt */ 67 for (i = 0; i < blk_cnt; i++) { 68 if (j >= blk_cnt) 69 mtd_map_blk_table[blk_begin + i] = MTD_BLK_TABLE_BLOCK_SHIFT; 70 for (; j < blk_cnt; j++) { 71 if (!mtd_block_isbad(mtd, (blk_begin + j) << mtd->erasesize_shift)) { 72 mtd_map_blk_table[blk_begin + i] = blk_begin + j; 73 j++; 74 if (j == blk_cnt) 75 j++; 76 break; 77 } 78 } 79 } 80 81 return 0; 82 } 83 } 84 85 static bool get_mtd_blk_map_address(struct mtd_info *mtd, loff_t *off) 86 { 87 bool mapped; 88 loff_t offset = *off; 89 size_t block_offset = offset & (mtd->erasesize - 1); 90 91 mapped = false; 92 if (!mtd_map_blk_table || 93 mtd_map_blk_table[(u64)offset >> mtd->erasesize_shift] == 94 MTD_BLK_TABLE_BLOCK_UNKNOWN || 95 mtd_map_blk_table[(u64)offset >> mtd->erasesize_shift] == 96 0xffffffff) 97 return mapped; 98 99 mapped = true; 100 *off = (loff_t)(((u32)mtd_map_blk_table[(u64)offset >> 101 mtd->erasesize_shift] << mtd->erasesize_shift) + block_offset); 102 103 return mapped; 104 } 105 106 void mtd_blk_map_partitions(struct blk_desc *desc) 107 { 108 disk_partition_t info; 109 int i, ret; 110 111 if (!desc) 112 return; 113 114 if (desc->if_type != IF_TYPE_MTD) 115 return; 116 117 for (i = 1; i < MAX_SEARCH_PARTITIONS; i++) { 118 ret = part_get_info(desc, i, &info); 119 if (ret != 0) 120 continue; 121 122 if (mtd_blk_map_table_init(desc, 123 info.start << 9, 124 info.size << 9)) { 125 printf("mtd block map table fail\n"); 126 } 127 } 128 } 129 130 static __maybe_unused int mtd_map_read(struct mtd_info *mtd, loff_t offset, 131 size_t *length, size_t *actual, 132 loff_t lim, u_char *buffer) 133 { 134 size_t left_to_read = *length; 135 u_char *p_buffer = buffer; 136 int rval; 137 138 while (left_to_read > 0) { 139 size_t block_offset = offset & (mtd->erasesize - 1); 140 size_t read_length; 141 loff_t mapped_offset; 142 143 if (offset >= mtd->size) 144 return 0; 145 146 mapped_offset = offset; 147 if (!get_mtd_blk_map_address(mtd, &mapped_offset)) { 148 if (mtd_block_isbad(mtd, mapped_offset & 149 ~(mtd->erasesize - 1))) { 150 printf("Skipping bad block 0x%08llx\n", 151 offset & ~(mtd->erasesize - 1)); 152 offset += mtd->erasesize - block_offset; 153 continue; 154 } 155 } 156 157 if (left_to_read < (mtd->erasesize - block_offset)) 158 read_length = left_to_read; 159 else 160 read_length = mtd->erasesize - block_offset; 161 162 rval = mtd_read(mtd, mapped_offset, read_length, &read_length, 163 p_buffer); 164 if (rval && rval != -EUCLEAN) { 165 printf("NAND read from offset %llx failed %d\n", 166 offset, rval); 167 *length -= left_to_read; 168 return rval; 169 } 170 171 left_to_read -= read_length; 172 offset += read_length; 173 p_buffer += read_length; 174 } 175 176 return 0; 177 } 178 179 char *mtd_part_parse(void) 180 { 181 char mtd_part_info_temp[MTD_SINGLE_PART_INFO_MAX_SIZE] = {0}; 182 u32 length, data_len = MTD_PART_INFO_MAX_SIZE; 183 struct blk_desc *dev_desc; 184 disk_partition_t info; 185 char *mtd_part_info_p; 186 struct mtd_info *mtd; 187 char *mtd_part_info; 188 int ret; 189 int p; 190 191 dev_desc = rockchip_get_bootdev(); 192 if (!dev_desc) 193 return NULL; 194 195 mtd = (struct mtd_info *)dev_desc->bdev->priv; 196 if (!mtd) 197 return NULL; 198 199 mtd_part_info = (char *)calloc(MTD_PART_INFO_MAX_SIZE, sizeof(char)); 200 if (!mtd_part_info) { 201 printf("%s: Fail to malloc!", __func__); 202 return NULL; 203 } 204 205 mtd_part_info_p = mtd_part_info; 206 snprintf(mtd_part_info_p, data_len - 1, "%s%s:", 207 MTD_PART_NAND_HEAD, 208 dev_desc->product); 209 data_len -= strlen(mtd_part_info_p); 210 mtd_part_info_p = mtd_part_info_p + strlen(mtd_part_info_p); 211 212 for (p = 1; p < MAX_SEARCH_PARTITIONS; p++) { 213 ret = part_get_info(dev_desc, p, &info); 214 if (ret) 215 break; 216 217 debug("name is %s, start addr is %x\n", info.name, 218 (int)(size_t)info.start); 219 220 snprintf(mtd_part_info_p, data_len - 1, "0x%x@0x%x(%s)", 221 (int)(size_t)info.size << 9, 222 (int)(size_t)info.start << 9, 223 info.name); 224 snprintf(mtd_part_info_temp, MTD_SINGLE_PART_INFO_MAX_SIZE - 1, 225 "0x%x@0x%x(%s)", 226 (int)(size_t)info.size << 9, 227 (int)(size_t)info.start << 9, 228 info.name); 229 strcat(mtd_part_info, ","); 230 if (part_get_info(dev_desc, p + 1, &info)) { 231 /* Nand flash is erased by block and gpt table just 232 * resserve 33 sectors for the last partition. This 233 * will erase the backup gpt table by user program, 234 * so reserve one block. 235 */ 236 snprintf(mtd_part_info_p, data_len - 1, "0x%x@0x%x(%s)", 237 (int)(size_t)(info.size - 238 (info.size - 1) % 239 (mtd->erasesize >> 9) - 1) << 9, 240 (int)(size_t)info.start << 9, 241 info.name); 242 break; 243 } 244 length = strlen(mtd_part_info_temp); 245 data_len -= length; 246 mtd_part_info_p = mtd_part_info_p + length + 1; 247 memset(mtd_part_info_temp, 0, MTD_SINGLE_PART_INFO_MAX_SIZE); 248 } 249 250 return mtd_part_info; 251 } 252 253 ulong mtd_dread(struct udevice *udev, lbaint_t start, 254 lbaint_t blkcnt, void *dst) 255 { 256 struct blk_desc *desc = dev_get_uclass_platdata(udev); 257 #if defined(CONFIG_NAND) || defined(CONFIG_MTD_SPI_NAND) || defined(CONFIG_SPI_FLASH_MTD) 258 loff_t off = (loff_t)(start * 512); 259 size_t rwsize = blkcnt * 512; 260 #endif 261 struct mtd_info *mtd; 262 int ret = 0; 263 264 if (!desc) 265 return ret; 266 267 mtd = desc->bdev->priv; 268 if (!mtd) 269 return 0; 270 271 if (blkcnt == 0) 272 return 0; 273 274 if (desc->devnum == BLK_MTD_NAND) { 275 #if defined(CONFIG_NAND) && !defined(CONFIG_SPL_BUILD) 276 mtd = dev_get_priv(udev->parent); 277 if (!mtd) 278 return 0; 279 280 ret = nand_read_skip_bad(mtd, off, &rwsize, 281 NULL, mtd->size, 282 (u_char *)(dst)); 283 #else 284 ret = mtd_map_read(mtd, off, &rwsize, 285 NULL, mtd->size, 286 (u_char *)(dst)); 287 #endif 288 if (!ret) 289 return blkcnt; 290 else 291 return 0; 292 } else if (desc->devnum == BLK_MTD_SPI_NAND) { 293 ret = mtd_map_read(mtd, off, &rwsize, 294 NULL, mtd->size, 295 (u_char *)(dst)); 296 if (!ret) 297 return blkcnt; 298 else 299 return 0; 300 } else if (desc->devnum == BLK_MTD_SPI_NOR) { 301 #if defined(CONFIG_SPI_FLASH_MTD) || defined(CONFIG_SPL_BUILD) 302 size_t retlen_nor; 303 304 mtd_read(mtd, off, rwsize, &retlen_nor, dst); 305 if (retlen_nor == rwsize) 306 return blkcnt; 307 else 308 #endif 309 return 0; 310 } else { 311 return 0; 312 } 313 } 314 315 ulong mtd_dwrite(struct udevice *udev, lbaint_t start, 316 lbaint_t blkcnt, const void *src) 317 { 318 /* Not implemented */ 319 return 0; 320 } 321 322 ulong mtd_derase(struct udevice *udev, lbaint_t start, 323 lbaint_t blkcnt) 324 { 325 /* Not implemented */ 326 return 0; 327 } 328 329 static int mtd_blk_probe(struct udevice *udev) 330 { 331 struct mtd_info *mtd = dev_get_uclass_priv(udev->parent); 332 struct blk_desc *desc = dev_get_uclass_platdata(udev); 333 int ret, i; 334 335 desc->bdev->priv = mtd; 336 sprintf(desc->vendor, "0x%.4x", 0x2207); 337 memcpy(desc->product, mtd->name, strlen(mtd->name)); 338 memcpy(desc->revision, "V1.00", sizeof("V1.00")); 339 if (mtd->type == MTD_NANDFLASH) { 340 if (desc->devnum == BLK_MTD_NAND) 341 mtd = dev_get_priv(udev->parent); 342 /* 343 * Find the first useful block in the end, 344 * and it is the end lba of the nand storage. 345 */ 346 for (i = 0; i < (mtd->size / mtd->erasesize); i++) { 347 ret = mtd_block_isbad(mtd, 348 mtd->size - mtd->erasesize * (i + 1)); 349 if (!ret) { 350 desc->lba = (mtd->size >> 9) - 351 (mtd->erasesize >> 9) * i; 352 break; 353 } 354 } 355 } else { 356 desc->lba = mtd->size >> 9; 357 } 358 359 debug("MTD: desc->lba is %lx\n", desc->lba); 360 361 return 0; 362 } 363 364 static const struct blk_ops mtd_blk_ops = { 365 .read = mtd_dread, 366 #ifndef CONFIG_SPL_BUILD 367 .write = mtd_dwrite, 368 .erase = mtd_derase, 369 #endif 370 }; 371 372 U_BOOT_DRIVER(mtd_blk) = { 373 .name = "mtd_blk", 374 .id = UCLASS_BLK, 375 .ops = &mtd_blk_ops, 376 .probe = mtd_blk_probe, 377 }; 378