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 char *mtd_part_parse(void) 22 { 23 char mtd_part_info_temp[MTD_SINGLE_PART_INFO_MAX_SIZE] = {0}; 24 u32 length, data_len = MTD_PART_INFO_MAX_SIZE; 25 struct blk_desc *dev_desc; 26 disk_partition_t info; 27 char *mtd_part_info_p; 28 struct mtd_info *mtd; 29 char *mtd_part_info; 30 int ret; 31 int p; 32 33 dev_desc = rockchip_get_bootdev(); 34 if (!dev_desc) 35 return NULL; 36 37 mtd = (struct mtd_info *)dev_desc->bdev->priv; 38 if (!mtd) 39 return NULL; 40 41 mtd_part_info = (char *)calloc(MTD_PART_INFO_MAX_SIZE, sizeof(char)); 42 if (!mtd_part_info) { 43 printf("%s: Fail to malloc!", __func__); 44 return NULL; 45 } 46 47 mtd_part_info_p = mtd_part_info; 48 snprintf(mtd_part_info_p, data_len - 1, "%s%s:", 49 MTD_PART_NAND_HEAD, 50 dev_desc->product); 51 data_len -= strlen(mtd_part_info_p); 52 mtd_part_info_p = mtd_part_info_p + strlen(mtd_part_info_p); 53 54 for (p = 1; p < MAX_SEARCH_PARTITIONS; p++) { 55 ret = part_get_info(dev_desc, p, &info); 56 if (ret) 57 break; 58 59 debug("name is %s, start addr is %x\n", info.name, 60 (int)(size_t)info.start); 61 62 snprintf(mtd_part_info_p, data_len - 1, "0x%x@0x%x(%s)", 63 (int)(size_t)info.size << 9, 64 (int)(size_t)info.start << 9, 65 info.name); 66 snprintf(mtd_part_info_temp, MTD_SINGLE_PART_INFO_MAX_SIZE - 1, 67 "0x%x@0x%x(%s)", 68 (int)(size_t)info.size << 9, 69 (int)(size_t)info.start << 9, 70 info.name); 71 strcat(mtd_part_info, ","); 72 if (part_get_info(dev_desc, p + 1, &info)) { 73 /* Nand flash is erased by block and gpt table just 74 * resserve 33 sectors for the last partition. This 75 * will erase the backup gpt table by user program, 76 * so reserve one block. 77 */ 78 snprintf(mtd_part_info_p, data_len - 1, "0x%x@0x%x(%s)", 79 (int)(size_t)(info.size - 80 (info.size - 1) % 81 (mtd->erasesize >> 9) - 1) << 9, 82 (int)(size_t)info.start << 9, 83 info.name); 84 break; 85 } 86 length = strlen(mtd_part_info_temp); 87 data_len -= length; 88 mtd_part_info_p = mtd_part_info_p + length + 1; 89 memset(mtd_part_info_temp, 0, MTD_SINGLE_PART_INFO_MAX_SIZE); 90 } 91 92 return mtd_part_info; 93 } 94 95 ulong mtd_dread(struct udevice *udev, lbaint_t start, 96 lbaint_t blkcnt, void *dst) 97 { 98 struct blk_desc *desc = dev_get_uclass_platdata(udev); 99 100 if (!desc) 101 return 0; 102 103 if (blkcnt == 0) 104 return 0; 105 106 if (desc->devnum == BLK_MTD_NAND) { 107 int ret = 0; 108 size_t rwsize = blkcnt * 512; 109 struct mtd_info *mtd = dev_get_priv(udev->parent); 110 struct nand_chip *chip = mtd_to_nand(mtd); 111 loff_t off = (loff_t)(start * 512); 112 113 if (!mtd) { 114 puts("\nno mtd available\n"); 115 return 0; 116 } 117 118 if (!chip) { 119 puts("\nno chip available\n"); 120 return 0; 121 } 122 123 ret = nand_read_skip_bad(&chip->mtd, off, &rwsize, 124 NULL, chip->mtd.size, 125 (u_char *)(dst)); 126 if (ret) 127 return 0; 128 else 129 return blkcnt; 130 } else if (desc->devnum == BLK_MTD_SPI_NAND) { 131 /* Not implemented */ 132 return 0; 133 } else if (desc->devnum == BLK_MTD_SPI_NOR) { 134 /* Not implemented */ 135 return 0; 136 } else { 137 return 0; 138 } 139 } 140 141 ulong mtd_dwrite(struct udevice *udev, lbaint_t start, 142 lbaint_t blkcnt, const void *src) 143 { 144 /* Not implemented */ 145 return 0; 146 } 147 148 ulong mtd_derase(struct udevice *udev, lbaint_t start, 149 lbaint_t blkcnt) 150 { 151 /* Not implemented */ 152 return 0; 153 } 154 155 static int mtd_blk_probe(struct udevice *udev) 156 { 157 struct blk_desc *desc = dev_get_uclass_platdata(udev); 158 struct mtd_info *mtd = dev_get_priv(udev->parent); 159 160 desc->bdev->priv = mtd; 161 sprintf(desc->vendor, "0x%.4x", 0x2207); 162 memcpy(desc->product, mtd->name, strlen(mtd->name)); 163 memcpy(desc->revision, "V1.00", sizeof("V1.00")); 164 if (mtd->type == MTD_NANDFLASH) { 165 /* Reserve 4 blocks for BBT(Bad Block Table) */ 166 desc->lba = (mtd->size >> 9) - (mtd->erasesize >> 9) * 4; 167 } else { 168 desc->lba = mtd->size >> 9; 169 } 170 171 return 0; 172 } 173 174 static const struct blk_ops mtd_blk_ops = { 175 .read = mtd_dread, 176 #ifndef CONFIG_SPL_BUILD 177 .write = mtd_dwrite, 178 .erase = mtd_derase, 179 #endif 180 }; 181 182 U_BOOT_DRIVER(mtd_blk) = { 183 .name = "mtd_blk", 184 .id = UCLASS_BLK, 185 .ops = &mtd_blk_ops, 186 .probe = mtd_blk_probe, 187 }; 188