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 #include <common.h> 12 13 struct blk_desc { 14 int if_type; /* type of the interface */ 15 int dev; /* device number */ 16 unsigned char part_type; /* partition type */ 17 unsigned char target; /* target SCSI ID */ 18 unsigned char lun; /* target LUN */ 19 unsigned char hwpart; /* HW partition, e.g. for eMMC */ 20 unsigned char type; /* device type */ 21 unsigned char removable; /* removable device */ 22 #ifdef CONFIG_LBA48 23 unsigned char lba48; /* device can use 48bit addr (ATA/ATAPI v7) */ 24 #endif 25 lbaint_t lba; /* number of blocks */ 26 unsigned long blksz; /* block size */ 27 int log2blksz; /* for convenience: log2(blksz) */ 28 char vendor [40+1]; /* IDE model, SCSI Vendor */ 29 char product[20+1]; /* IDE Serial no, SCSI product */ 30 char revision[8+1]; /* firmware revision */ 31 unsigned long (*block_read)(struct blk_desc *block_dev, 32 lbaint_t start, 33 lbaint_t blkcnt, 34 void *buffer); 35 unsigned long (*block_write)(struct blk_desc *block_dev, 36 lbaint_t start, 37 lbaint_t blkcnt, 38 const void *buffer); 39 unsigned long (*block_erase)(struct blk_desc *block_dev, 40 lbaint_t start, 41 lbaint_t blkcnt); 42 void *priv; /* driver private struct pointer */ 43 }; 44 45 #define BLOCK_CNT(size, blk_desc) (PAD_COUNT(size, blk_desc->blksz)) 46 #define PAD_TO_BLOCKSIZE(size, blk_desc) \ 47 (PAD_SIZE(size, blk_desc->blksz)) 48 #define LOG2(x) (((x & 0xaaaaaaaa) ? 1 : 0) + ((x & 0xcccccccc) ? 2 : 0) + \ 49 ((x & 0xf0f0f0f0) ? 4 : 0) + ((x & 0xff00ff00) ? 8 : 0) + \ 50 ((x & 0xffff0000) ? 16 : 0)) 51 #define LOG2_INVALID(type) ((type)((sizeof(type)<<3)-1)) 52 53 /* Interface types: */ 54 #define IF_TYPE_UNKNOWN 0 55 #define IF_TYPE_IDE 1 56 #define IF_TYPE_SCSI 2 57 #define IF_TYPE_ATAPI 3 58 #define IF_TYPE_USB 4 59 #define IF_TYPE_DOC 5 60 #define IF_TYPE_MMC 6 61 #define IF_TYPE_SD 7 62 #define IF_TYPE_SATA 8 63 #define IF_TYPE_HOST 9 64 #define IF_TYPE_MAX 10 /* Max number of IF_TYPE_* supported */ 65 66 /* Part types */ 67 #define PART_TYPE_UNKNOWN 0x00 68 #define PART_TYPE_MAC 0x01 69 #define PART_TYPE_DOS 0x02 70 #define PART_TYPE_ISO 0x03 71 #define PART_TYPE_AMIGA 0x04 72 #define PART_TYPE_EFI 0x05 73 74 /* 75 * Type string for U-Boot bootable partitions 76 */ 77 #define BOOT_PART_TYPE "U-Boot" /* primary boot partition type */ 78 #define BOOT_PART_COMP "PPCBoot" /* PPCBoot compatibility type */ 79 80 /* device types */ 81 #define DEV_TYPE_UNKNOWN 0xff /* not connected */ 82 #define DEV_TYPE_HARDDISK 0x00 /* harddisk */ 83 #define DEV_TYPE_TAPE 0x01 /* Tape */ 84 #define DEV_TYPE_CDROM 0x05 /* CD-ROM */ 85 #define DEV_TYPE_OPDISK 0x07 /* optical disk */ 86 87 typedef struct disk_partition { 88 lbaint_t start; /* # of first block in partition */ 89 lbaint_t size; /* number of blocks in partition */ 90 ulong blksz; /* block size in bytes */ 91 uchar name[32]; /* partition name */ 92 uchar type[32]; /* string type description */ 93 int bootable; /* Active/Bootable flag is set */ 94 #ifdef CONFIG_PARTITION_UUIDS 95 char uuid[37]; /* filesystem UUID as string, if exists */ 96 #endif 97 #ifdef CONFIG_PARTITION_TYPE_GUID 98 char type_guid[37]; /* type GUID as string, if exists */ 99 #endif 100 } disk_partition_t; 101 102 /* Misc _get_dev functions */ 103 #ifdef CONFIG_PARTITIONS 104 struct blk_desc *get_dev(const char *ifname, int dev); 105 struct blk_desc *ide_get_dev(int dev); 106 struct blk_desc *sata_get_dev(int dev); 107 struct blk_desc *scsi_get_dev(int dev); 108 struct blk_desc *usb_stor_get_dev(int dev); 109 struct blk_desc *mmc_get_dev(int dev); 110 int mmc_select_hwpart(int dev_num, int hwpart); 111 struct blk_desc *systemace_get_dev(int dev); 112 struct blk_desc *mg_disk_get_dev(int dev); 113 struct blk_desc *host_get_dev(int dev); 114 int host_get_dev_err(int dev, struct blk_desc **blk_devp); 115 116 /* disk/part.c */ 117 int get_partition_info(struct blk_desc *dev_desc, int part, 118 disk_partition_t *info); 119 void print_part(struct blk_desc *dev_desc); 120 void init_part(struct blk_desc *dev_desc); 121 void dev_print(struct blk_desc *dev_desc); 122 int get_device(const char *ifname, const char *dev_str, 123 struct blk_desc **dev_desc); 124 int get_device_and_partition(const char *ifname, const char *dev_part_str, 125 struct blk_desc **dev_desc, 126 disk_partition_t *info, int allow_whole_dev); 127 #else 128 static inline struct blk_desc *get_dev(const char *ifname, int dev) 129 { return NULL; } 130 static inline struct blk_desc *ide_get_dev(int dev) { return NULL; } 131 static inline struct blk_desc *sata_get_dev(int dev) { return NULL; } 132 static inline struct blk_desc *scsi_get_dev(int dev) { return NULL; } 133 static inline struct blk_desc *usb_stor_get_dev(int dev) { return NULL; } 134 static inline struct blk_desc *mmc_get_dev(int dev) { return NULL; } 135 static inline int mmc_select_hwpart(int dev_num, int hwpart) { return -1; } 136 static inline struct blk_desc *systemace_get_dev(int dev) { return NULL; } 137 static inline struct blk_desc *mg_disk_get_dev(int dev) { return NULL; } 138 static inline struct blk_desc *host_get_dev(int dev) { return NULL; } 139 140 static inline int get_partition_info(struct blk_desc *dev_desc, int part, 141 disk_partition_t *info) { return -1; } 142 static inline void print_part(struct blk_desc *dev_desc) {} 143 static inline void init_part(struct blk_desc *dev_desc) {} 144 static inline void dev_print(struct blk_desc *dev_desc) {} 145 static inline int get_device(const char *ifname, const char *dev_str, 146 struct blk_desc **dev_desc) 147 { return -1; } 148 static inline int get_device_and_partition(const char *ifname, 149 const char *dev_part_str, 150 struct blk_desc **dev_desc, 151 disk_partition_t *info, 152 int allow_whole_dev) 153 { *dev_desc = NULL; return -1; } 154 #endif 155 156 #ifdef CONFIG_MAC_PARTITION 157 /* disk/part_mac.c */ 158 int get_partition_info_mac(struct blk_desc *dev_desc, int part, 159 disk_partition_t *info); 160 void print_part_mac(struct blk_desc *dev_desc); 161 int test_part_mac(struct blk_desc *dev_desc); 162 #endif 163 164 #ifdef CONFIG_DOS_PARTITION 165 /* disk/part_dos.c */ 166 int get_partition_info_dos(struct blk_desc *dev_desc, int part, 167 disk_partition_t *info); 168 void print_part_dos(struct blk_desc *dev_desc); 169 int test_part_dos(struct blk_desc *dev_desc); 170 #endif 171 172 #ifdef CONFIG_ISO_PARTITION 173 /* disk/part_iso.c */ 174 int get_partition_info_iso(struct blk_desc *dev_desc, int part, 175 disk_partition_t *info); 176 void print_part_iso(struct blk_desc *dev_desc); 177 int test_part_iso(struct blk_desc *dev_desc); 178 #endif 179 180 #ifdef CONFIG_AMIGA_PARTITION 181 /* disk/part_amiga.c */ 182 int get_partition_info_amiga(struct blk_desc *dev_desc, int part, 183 disk_partition_t *info); 184 void print_part_amiga(struct blk_desc *dev_desc); 185 int test_part_amiga(struct blk_desc *dev_desc); 186 #endif 187 188 #ifdef CONFIG_EFI_PARTITION 189 #include <part_efi.h> 190 /* disk/part_efi.c */ 191 int get_partition_info_efi(struct blk_desc *dev_desc, int part, 192 disk_partition_t *info); 193 /** 194 * get_partition_info_efi_by_name() - Find the specified GPT partition table entry 195 * 196 * @param dev_desc - block device descriptor 197 * @param gpt_name - the specified table entry name 198 * @param info - returns the disk partition info 199 * 200 * @return - '0' on match, '-1' on no match, otherwise error 201 */ 202 int get_partition_info_efi_by_name(struct blk_desc *dev_desc, 203 const char *name, disk_partition_t *info); 204 void print_part_efi(struct blk_desc *dev_desc); 205 int test_part_efi(struct blk_desc *dev_desc); 206 207 /** 208 * write_gpt_table() - Write the GUID Partition Table to disk 209 * 210 * @param dev_desc - block device descriptor 211 * @param gpt_h - pointer to GPT header representation 212 * @param gpt_e - pointer to GPT partition table entries 213 * 214 * @return - zero on success, otherwise error 215 */ 216 int write_gpt_table(struct blk_desc *dev_desc, 217 gpt_header *gpt_h, gpt_entry *gpt_e); 218 219 /** 220 * gpt_fill_pte(): Fill the GPT partition table entry 221 * 222 * @param gpt_h - GPT header representation 223 * @param gpt_e - GPT partition table entries 224 * @param partitions - list of partitions 225 * @param parts - number of partitions 226 * 227 * @return zero on success 228 */ 229 int gpt_fill_pte(gpt_header *gpt_h, gpt_entry *gpt_e, 230 disk_partition_t *partitions, int parts); 231 232 /** 233 * gpt_fill_header(): Fill the GPT header 234 * 235 * @param dev_desc - block device descriptor 236 * @param gpt_h - GPT header representation 237 * @param str_guid - disk guid string representation 238 * @param parts_count - number of partitions 239 * 240 * @return - error on str_guid conversion error 241 */ 242 int gpt_fill_header(struct blk_desc *dev_desc, gpt_header *gpt_h, 243 char *str_guid, int parts_count); 244 245 /** 246 * gpt_restore(): Restore GPT partition table 247 * 248 * @param dev_desc - block device descriptor 249 * @param str_disk_guid - disk GUID 250 * @param partitions - list of partitions 251 * @param parts - number of partitions 252 * 253 * @return zero on success 254 */ 255 int gpt_restore(struct blk_desc *dev_desc, char *str_disk_guid, 256 disk_partition_t *partitions, const int parts_count); 257 258 /** 259 * is_valid_gpt_buf() - Ensure that the Primary GPT information is valid 260 * 261 * @param dev_desc - block device descriptor 262 * @param buf - buffer which contains the MBR and Primary GPT info 263 * 264 * @return - '0' on success, otherwise error 265 */ 266 int is_valid_gpt_buf(struct blk_desc *dev_desc, void *buf); 267 268 /** 269 * write_mbr_and_gpt_partitions() - write MBR, Primary GPT and Backup GPT 270 * 271 * @param dev_desc - block device descriptor 272 * @param buf - buffer which contains the MBR and Primary GPT info 273 * 274 * @return - '0' on success, otherwise error 275 */ 276 int write_mbr_and_gpt_partitions(struct blk_desc *dev_desc, void *buf); 277 278 /** 279 * gpt_verify_headers() - Function to read and CRC32 check of the GPT's header 280 * and partition table entries (PTE) 281 * 282 * As a side effect if sets gpt_head and gpt_pte so they point to GPT data. 283 * 284 * @param dev_desc - block device descriptor 285 * @param gpt_head - pointer to GPT header data read from medium 286 * @param gpt_pte - pointer to GPT partition table enties read from medium 287 * 288 * @return - '0' on success, otherwise error 289 */ 290 int gpt_verify_headers(struct blk_desc *dev_desc, gpt_header *gpt_head, 291 gpt_entry **gpt_pte); 292 293 /** 294 * gpt_verify_partitions() - Function to check if partitions' name, start and 295 * size correspond to '$partitions' env variable 296 * 297 * This function checks if on medium stored GPT data is in sync with information 298 * provided in '$partitions' environment variable. Specificially, name, start 299 * and size of the partition is checked. 300 * 301 * @param dev_desc - block device descriptor 302 * @param partitions - partition data read from '$partitions' env variable 303 * @param parts - number of partitions read from '$partitions' env variable 304 * @param gpt_head - pointer to GPT header data read from medium 305 * @param gpt_pte - pointer to GPT partition table enties read from medium 306 * 307 * @return - '0' on success, otherwise error 308 */ 309 int gpt_verify_partitions(struct blk_desc *dev_desc, 310 disk_partition_t *partitions, int parts, 311 gpt_header *gpt_head, gpt_entry **gpt_pte); 312 #endif 313 314 #endif /* _PART_H */ 315