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 loff_t off = (loff_t)(start * 512); 100 size_t rwsize = blkcnt * 512; 101 struct mtd_info *mtd; 102 103 if (!desc) 104 return 0; 105 106 mtd = desc->bdev->priv; 107 if (!mtd) 108 return 0; 109 110 if (blkcnt == 0) 111 return 0; 112 113 if (desc->devnum == BLK_MTD_NAND) { 114 #ifdef CONFIG_NAND 115 int ret = 0; 116 117 mtd = dev_get_priv(udev->parent); 118 if (!mtd) 119 return 0; 120 121 ret = nand_read_skip_bad(mtd, off, &rwsize, 122 NULL, mtd->size, 123 (u_char *)(dst)); 124 if (!ret) 125 return blkcnt; 126 else 127 #endif 128 return 0; 129 } else if (desc->devnum == BLK_MTD_SPI_NAND) { 130 #ifdef CONFIG_MTD_SPI_NAND 131 size_t retlen; 132 133 mtd_read(mtd, off, rwsize, &retlen, dst); 134 if (retlen == rwsize) 135 return blkcnt; 136 else 137 #endif 138 return 0; 139 } else if (desc->devnum == BLK_MTD_SPI_NOR) { 140 /* Not implemented */ 141 return 0; 142 } else { 143 return 0; 144 } 145 } 146 147 ulong mtd_dwrite(struct udevice *udev, lbaint_t start, 148 lbaint_t blkcnt, const void *src) 149 { 150 /* Not implemented */ 151 return 0; 152 } 153 154 ulong mtd_derase(struct udevice *udev, lbaint_t start, 155 lbaint_t blkcnt) 156 { 157 /* Not implemented */ 158 return 0; 159 } 160 161 static int mtd_blk_probe(struct udevice *udev) 162 { 163 struct mtd_info *mtd = dev_get_uclass_priv(udev->parent); 164 struct blk_desc *desc = dev_get_uclass_platdata(udev); 165 166 desc->bdev->priv = mtd; 167 sprintf(desc->vendor, "0x%.4x", 0x2207); 168 memcpy(desc->product, mtd->name, strlen(mtd->name)); 169 memcpy(desc->revision, "V1.00", sizeof("V1.00")); 170 if (mtd->type == MTD_NANDFLASH) { 171 /* Reserve 4 blocks for BBT(Bad Block Table) */ 172 desc->lba = (mtd->size >> 9) - (mtd->erasesize >> 9) * 4; 173 } else { 174 desc->lba = mtd->size >> 9; 175 } 176 177 return 0; 178 } 179 180 static const struct blk_ops mtd_blk_ops = { 181 .read = mtd_dread, 182 #ifndef CONFIG_SPL_BUILD 183 .write = mtd_dwrite, 184 .erase = mtd_derase, 185 #endif 186 }; 187 188 U_BOOT_DRIVER(mtd_blk) = { 189 .name = "mtd_blk", 190 .id = UCLASS_BLK, 191 .ops = &mtd_blk_ops, 192 .probe = mtd_blk_probe, 193 }; 194