1 /* 2 * (C) Copyright 2000-2004 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 #ifndef _PART_H 8 #define _PART_H 9 10 #include <ide.h> 11 12 struct blk_desc { 13 int if_type; /* type of the interface */ 14 int dev; /* device number */ 15 unsigned char part_type; /* partition type */ 16 unsigned char target; /* target SCSI ID */ 17 unsigned char lun; /* target LUN */ 18 unsigned char hwpart; /* HW partition, e.g. for eMMC */ 19 unsigned char type; /* device type */ 20 unsigned char removable; /* removable device */ 21 #ifdef CONFIG_LBA48 22 unsigned char lba48; /* device can use 48bit addr (ATA/ATAPI v7) */ 23 #endif 24 lbaint_t lba; /* number of blocks */ 25 unsigned long blksz; /* block size */ 26 int log2blksz; /* for convenience: log2(blksz) */ 27 char vendor [40+1]; /* IDE model, SCSI Vendor */ 28 char product[20+1]; /* IDE Serial no, SCSI product */ 29 char revision[8+1]; /* firmware revision */ 30 unsigned long (*block_read)(struct blk_desc *block_dev, 31 lbaint_t start, 32 lbaint_t blkcnt, 33 void *buffer); 34 unsigned long (*block_write)(struct blk_desc *block_dev, 35 lbaint_t start, 36 lbaint_t blkcnt, 37 const void *buffer); 38 unsigned long (*block_erase)(struct blk_desc *block_dev, 39 lbaint_t start, 40 lbaint_t blkcnt); 41 void *priv; /* driver private struct pointer */ 42 }; 43 44 #define BLOCK_CNT(size, blk_desc) (PAD_COUNT(size, blk_desc->blksz)) 45 #define PAD_TO_BLOCKSIZE(size, blk_desc) \ 46 (PAD_SIZE(size, blk_desc->blksz)) 47 #define LOG2(x) (((x & 0xaaaaaaaa) ? 1 : 0) + ((x & 0xcccccccc) ? 2 : 0) + \ 48 ((x & 0xf0f0f0f0) ? 4 : 0) + ((x & 0xff00ff00) ? 8 : 0) + \ 49 ((x & 0xffff0000) ? 16 : 0)) 50 #define LOG2_INVALID(type) ((type)((sizeof(type)<<3)-1)) 51 52 /* Interface types: */ 53 #define IF_TYPE_UNKNOWN 0 54 #define IF_TYPE_IDE 1 55 #define IF_TYPE_SCSI 2 56 #define IF_TYPE_ATAPI 3 57 #define IF_TYPE_USB 4 58 #define IF_TYPE_DOC 5 59 #define IF_TYPE_MMC 6 60 #define IF_TYPE_SD 7 61 #define IF_TYPE_SATA 8 62 #define IF_TYPE_HOST 9 63 #define IF_TYPE_MAX 10 /* Max number of IF_TYPE_* supported */ 64 65 /* Part types */ 66 #define PART_TYPE_UNKNOWN 0x00 67 #define PART_TYPE_MAC 0x01 68 #define PART_TYPE_DOS 0x02 69 #define PART_TYPE_ISO 0x03 70 #define PART_TYPE_AMIGA 0x04 71 #define PART_TYPE_EFI 0x05 72 73 /* 74 * Type string for U-Boot bootable partitions 75 */ 76 #define BOOT_PART_TYPE "U-Boot" /* primary boot partition type */ 77 #define BOOT_PART_COMP "PPCBoot" /* PPCBoot compatibility type */ 78 79 /* device types */ 80 #define DEV_TYPE_UNKNOWN 0xff /* not connected */ 81 #define DEV_TYPE_HARDDISK 0x00 /* harddisk */ 82 #define DEV_TYPE_TAPE 0x01 /* Tape */ 83 #define DEV_TYPE_CDROM 0x05 /* CD-ROM */ 84 #define DEV_TYPE_OPDISK 0x07 /* optical disk */ 85 86 typedef struct disk_partition { 87 lbaint_t start; /* # of first block in partition */ 88 lbaint_t size; /* number of blocks in partition */ 89 ulong blksz; /* block size in bytes */ 90 uchar name[32]; /* partition name */ 91 uchar type[32]; /* string type description */ 92 int bootable; /* Active/Bootable flag is set */ 93 #ifdef CONFIG_PARTITION_UUIDS 94 char uuid[37]; /* filesystem UUID as string, if exists */ 95 #endif 96 #ifdef CONFIG_PARTITION_TYPE_GUID 97 char type_guid[37]; /* type GUID as string, if exists */ 98 #endif 99 } disk_partition_t; 100 101 /* Misc _get_dev functions */ 102 #ifdef CONFIG_PARTITIONS 103 struct blk_desc *get_dev(const char *ifname, int dev); 104 struct blk_desc *ide_get_dev(int dev); 105 struct blk_desc *sata_get_dev(int dev); 106 struct blk_desc *scsi_get_dev(int dev); 107 struct blk_desc *usb_stor_get_dev(int dev); 108 struct blk_desc *mmc_get_dev(int dev); 109 int mmc_select_hwpart(int dev_num, int hwpart); 110 struct blk_desc *systemace_get_dev(int dev); 111 struct blk_desc *mg_disk_get_dev(int dev); 112 struct blk_desc *host_get_dev(int dev); 113 int host_get_dev_err(int dev, struct blk_desc **blk_devp); 114 115 /* disk/part.c */ 116 int get_partition_info(struct blk_desc *dev_desc, int part, 117 disk_partition_t *info); 118 void print_part(struct blk_desc *dev_desc); 119 void init_part(struct blk_desc *dev_desc); 120 void dev_print(struct blk_desc *dev_desc); 121 int get_device(const char *ifname, const char *dev_str, 122 struct blk_desc **dev_desc); 123 int get_device_and_partition(const char *ifname, const char *dev_part_str, 124 struct blk_desc **dev_desc, 125 disk_partition_t *info, int allow_whole_dev); 126 #else 127 static inline struct blk_desc *get_dev(const char *ifname, int dev) 128 { return NULL; } 129 static inline struct blk_desc *ide_get_dev(int dev) { return NULL; } 130 static inline struct blk_desc *sata_get_dev(int dev) { return NULL; } 131 static inline struct blk_desc *scsi_get_dev(int dev) { return NULL; } 132 static inline struct blk_desc *usb_stor_get_dev(int dev) { return NULL; } 133 static inline struct blk_desc *mmc_get_dev(int dev) { return NULL; } 134 static inline int mmc_select_hwpart(int dev_num, int hwpart) { return -1; } 135 static inline struct blk_desc *systemace_get_dev(int dev) { return NULL; } 136 static inline struct blk_desc *mg_disk_get_dev(int dev) { return NULL; } 137 static inline struct blk_desc *host_get_dev(int dev) { return NULL; } 138 139 static inline int get_partition_info(struct blk_desc *dev_desc, int part, 140 disk_partition_t *info) { return -1; } 141 static inline void print_part(struct blk_desc *dev_desc) {} 142 static inline void init_part(struct blk_desc *dev_desc) {} 143 static inline void dev_print(struct blk_desc *dev_desc) {} 144 static inline int get_device(const char *ifname, const char *dev_str, 145 struct blk_desc **dev_desc) 146 { return -1; } 147 static inline int get_device_and_partition(const char *ifname, 148 const char *dev_part_str, 149 struct blk_desc **dev_desc, 150 disk_partition_t *info, 151 int allow_whole_dev) 152 { *dev_desc = NULL; return -1; } 153 #endif 154 155 #ifdef CONFIG_MAC_PARTITION 156 /* disk/part_mac.c */ 157 int get_partition_info_mac(struct blk_desc *dev_desc, int part, 158 disk_partition_t *info); 159 void print_part_mac(struct blk_desc *dev_desc); 160 int test_part_mac(struct blk_desc *dev_desc); 161 #endif 162 163 #ifdef CONFIG_DOS_PARTITION 164 /* disk/part_dos.c */ 165 int get_partition_info_dos(struct blk_desc *dev_desc, int part, 166 disk_partition_t *info); 167 void print_part_dos(struct blk_desc *dev_desc); 168 int test_part_dos(struct blk_desc *dev_desc); 169 #endif 170 171 #ifdef CONFIG_ISO_PARTITION 172 /* disk/part_iso.c */ 173 int get_partition_info_iso(struct blk_desc *dev_desc, int part, 174 disk_partition_t *info); 175 void print_part_iso(struct blk_desc *dev_desc); 176 int test_part_iso(struct blk_desc *dev_desc); 177 #endif 178 179 #ifdef CONFIG_AMIGA_PARTITION 180 /* disk/part_amiga.c */ 181 int get_partition_info_amiga(struct blk_desc *dev_desc, int part, 182 disk_partition_t *info); 183 void print_part_amiga(struct blk_desc *dev_desc); 184 int test_part_amiga(struct blk_desc *dev_desc); 185 #endif 186 187 #ifdef CONFIG_EFI_PARTITION 188 #include <part_efi.h> 189 /* disk/part_efi.c */ 190 int get_partition_info_efi(struct blk_desc *dev_desc, int part, 191 disk_partition_t *info); 192 /** 193 * get_partition_info_efi_by_name() - Find the specified GPT partition table entry 194 * 195 * @param dev_desc - block device descriptor 196 * @param gpt_name - the specified table entry name 197 * @param info - returns the disk partition info 198 * 199 * @return - '0' on match, '-1' on no match, otherwise error 200 */ 201 int get_partition_info_efi_by_name(struct blk_desc *dev_desc, 202 const char *name, disk_partition_t *info); 203 void print_part_efi(struct blk_desc *dev_desc); 204 int test_part_efi(struct blk_desc *dev_desc); 205 206 /** 207 * write_gpt_table() - Write the GUID Partition Table to disk 208 * 209 * @param dev_desc - block device descriptor 210 * @param gpt_h - pointer to GPT header representation 211 * @param gpt_e - pointer to GPT partition table entries 212 * 213 * @return - zero on success, otherwise error 214 */ 215 int write_gpt_table(struct blk_desc *dev_desc, 216 gpt_header *gpt_h, gpt_entry *gpt_e); 217 218 /** 219 * gpt_fill_pte(): Fill the GPT partition table entry 220 * 221 * @param gpt_h - GPT header representation 222 * @param gpt_e - GPT partition table entries 223 * @param partitions - list of partitions 224 * @param parts - number of partitions 225 * 226 * @return zero on success 227 */ 228 int gpt_fill_pte(gpt_header *gpt_h, gpt_entry *gpt_e, 229 disk_partition_t *partitions, int parts); 230 231 /** 232 * gpt_fill_header(): Fill the GPT header 233 * 234 * @param dev_desc - block device descriptor 235 * @param gpt_h - GPT header representation 236 * @param str_guid - disk guid string representation 237 * @param parts_count - number of partitions 238 * 239 * @return - error on str_guid conversion error 240 */ 241 int gpt_fill_header(struct blk_desc *dev_desc, gpt_header *gpt_h, 242 char *str_guid, int parts_count); 243 244 /** 245 * gpt_restore(): Restore GPT partition table 246 * 247 * @param dev_desc - block device descriptor 248 * @param str_disk_guid - disk GUID 249 * @param partitions - list of partitions 250 * @param parts - number of partitions 251 * 252 * @return zero on success 253 */ 254 int gpt_restore(struct blk_desc *dev_desc, char *str_disk_guid, 255 disk_partition_t *partitions, const int parts_count); 256 257 /** 258 * is_valid_gpt_buf() - Ensure that the Primary GPT information is valid 259 * 260 * @param dev_desc - block device descriptor 261 * @param buf - buffer which contains the MBR and Primary GPT info 262 * 263 * @return - '0' on success, otherwise error 264 */ 265 int is_valid_gpt_buf(struct blk_desc *dev_desc, void *buf); 266 267 /** 268 * write_mbr_and_gpt_partitions() - write MBR, Primary GPT and Backup GPT 269 * 270 * @param dev_desc - block device descriptor 271 * @param buf - buffer which contains the MBR and Primary GPT info 272 * 273 * @return - '0' on success, otherwise error 274 */ 275 int write_mbr_and_gpt_partitions(struct blk_desc *dev_desc, void *buf); 276 277 /** 278 * gpt_verify_headers() - Function to read and CRC32 check of the GPT's header 279 * and partition table entries (PTE) 280 * 281 * As a side effect if sets gpt_head and gpt_pte so they point to GPT data. 282 * 283 * @param dev_desc - block device descriptor 284 * @param gpt_head - pointer to GPT header data read from medium 285 * @param gpt_pte - pointer to GPT partition table enties read from medium 286 * 287 * @return - '0' on success, otherwise error 288 */ 289 int gpt_verify_headers(struct blk_desc *dev_desc, gpt_header *gpt_head, 290 gpt_entry **gpt_pte); 291 292 /** 293 * gpt_verify_partitions() - Function to check if partitions' name, start and 294 * size correspond to '$partitions' env variable 295 * 296 * This function checks if on medium stored GPT data is in sync with information 297 * provided in '$partitions' environment variable. Specificially, name, start 298 * and size of the partition is checked. 299 * 300 * @param dev_desc - block device descriptor 301 * @param partitions - partition data read from '$partitions' env variable 302 * @param parts - number of partitions read from '$partitions' env variable 303 * @param gpt_head - pointer to GPT header data read from medium 304 * @param gpt_pte - pointer to GPT partition table enties read from medium 305 * 306 * @return - '0' on success, otherwise error 307 */ 308 int gpt_verify_partitions(struct blk_desc *dev_desc, 309 disk_partition_t *partitions, int parts, 310 gpt_header *gpt_head, gpt_entry **gpt_pte); 311 #endif 312 313 #endif /* _PART_H */ 314