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 <blk.h> 11 #include <ide.h> 12 13 #define LOG2(x) (((x & 0xaaaaaaaa) ? 1 : 0) + ((x & 0xcccccccc) ? 2 : 0) + \ 14 ((x & 0xf0f0f0f0) ? 4 : 0) + ((x & 0xff00ff00) ? 8 : 0) + \ 15 ((x & 0xffff0000) ? 16 : 0)) 16 #define LOG2_INVALID(type) ((type)((sizeof(type)<<3)-1)) 17 18 /* Part types */ 19 #define PART_TYPE_UNKNOWN 0x00 20 #define PART_TYPE_MAC 0x01 21 #define PART_TYPE_DOS 0x02 22 #define PART_TYPE_ISO 0x03 23 #define PART_TYPE_AMIGA 0x04 24 #define PART_TYPE_EFI 0x05 25 26 /* 27 * Type string for U-Boot bootable partitions 28 */ 29 #define BOOT_PART_TYPE "U-Boot" /* primary boot partition type */ 30 #define BOOT_PART_COMP "PPCBoot" /* PPCBoot compatibility type */ 31 32 /* device types */ 33 #define DEV_TYPE_UNKNOWN 0xff /* not connected */ 34 #define DEV_TYPE_HARDDISK 0x00 /* harddisk */ 35 #define DEV_TYPE_TAPE 0x01 /* Tape */ 36 #define DEV_TYPE_CDROM 0x05 /* CD-ROM */ 37 #define DEV_TYPE_OPDISK 0x07 /* optical disk */ 38 39 typedef struct disk_partition { 40 lbaint_t start; /* # of first block in partition */ 41 lbaint_t size; /* number of blocks in partition */ 42 ulong blksz; /* block size in bytes */ 43 uchar name[32]; /* partition name */ 44 uchar type[32]; /* string type description */ 45 int bootable; /* Active/Bootable flag is set */ 46 #ifdef CONFIG_PARTITION_UUIDS 47 char uuid[37]; /* filesystem UUID as string, if exists */ 48 #endif 49 #ifdef CONFIG_PARTITION_TYPE_GUID 50 char type_guid[37]; /* type GUID as string, if exists */ 51 #endif 52 } disk_partition_t; 53 54 /* Misc _get_dev functions */ 55 #ifdef CONFIG_PARTITIONS 56 /** 57 * blk_get_dev() - get a pointer to a block device given its type and number 58 * 59 * Each interface allocates its own devices and typically struct blk_desc is 60 * contained with the interface's data structure. There is no global 61 * numbering for block devices, so the interface name must be provided. 62 * 63 * @ifname: Interface name (e.g. "ide", "scsi") 64 * @dev: Device number (0 for first device on that interface, 1 for 65 * second, etc. 66 * @return pointer to the block device, or NULL if not available, or an 67 * error occurred. 68 */ 69 struct blk_desc *blk_get_dev(const char *ifname, int dev); 70 struct blk_desc *ide_get_dev(int dev); 71 struct blk_desc *sata_get_dev(int dev); 72 struct blk_desc *scsi_get_dev(int dev); 73 struct blk_desc *usb_stor_get_dev(int dev); 74 struct blk_desc *mmc_get_dev(int dev); 75 76 /** 77 * mmc_select_hwpart() - Select the MMC hardware partiion on an MMC device 78 * 79 * MMC devices can support partitioning at the hardware level. This is quite 80 * separate from the normal idea of software-based partitions. MMC hardware 81 * partitions must be explicitly selected. Once selected only the region of 82 * the device covered by that partition is accessible. 83 * 84 * The MMC standard provides for two boot partitions (numbered 1 and 2), 85 * rpmb (3), and up to 4 addition general-purpose partitions (4-7). 86 * 87 * @dev_num: Block device number (struct blk_desc->dev value) 88 * @hwpart: Hardware partition number to select. 0 means the raw device, 89 * 1 is the first partition, 2 is the second, etc. 90 * @return 0 if OK, other value for an error 91 */ 92 int mmc_select_hwpart(int dev_num, int hwpart); 93 struct blk_desc *systemace_get_dev(int dev); 94 struct blk_desc *mg_disk_get_dev(int dev); 95 struct blk_desc *host_get_dev(int dev); 96 int host_get_dev_err(int dev, struct blk_desc **blk_devp); 97 98 /* disk/part.c */ 99 int get_partition_info(struct blk_desc *dev_desc, int part, 100 disk_partition_t *info); 101 void print_part(struct blk_desc *dev_desc); 102 void init_part(struct blk_desc *dev_desc); 103 void dev_print(struct blk_desc *dev_desc); 104 int get_device(const char *ifname, const char *dev_str, 105 struct blk_desc **dev_desc); 106 int get_device_and_partition(const char *ifname, const char *dev_part_str, 107 struct blk_desc **dev_desc, 108 disk_partition_t *info, int allow_whole_dev); 109 #else 110 static inline struct blk_desc *blk_get_dev(const char *ifname, int dev) 111 { return NULL; } 112 static inline struct blk_desc *ide_get_dev(int dev) { return NULL; } 113 static inline struct blk_desc *sata_get_dev(int dev) { return NULL; } 114 static inline struct blk_desc *scsi_get_dev(int dev) { return NULL; } 115 static inline struct blk_desc *usb_stor_get_dev(int dev) { return NULL; } 116 static inline struct blk_desc *mmc_get_dev(int dev) { return NULL; } 117 static inline int mmc_select_hwpart(int dev_num, int hwpart) { return -1; } 118 static inline struct blk_desc *systemace_get_dev(int dev) { return NULL; } 119 static inline struct blk_desc *mg_disk_get_dev(int dev) { return NULL; } 120 static inline struct blk_desc *host_get_dev(int dev) { return NULL; } 121 122 static inline int get_partition_info(struct blk_desc *dev_desc, int part, 123 disk_partition_t *info) { return -1; } 124 static inline void print_part(struct blk_desc *dev_desc) {} 125 static inline void init_part(struct blk_desc *dev_desc) {} 126 static inline void dev_print(struct blk_desc *dev_desc) {} 127 static inline int get_device(const char *ifname, const char *dev_str, 128 struct blk_desc **dev_desc) 129 { return -1; } 130 static inline int get_device_and_partition(const char *ifname, 131 const char *dev_part_str, 132 struct blk_desc **dev_desc, 133 disk_partition_t *info, 134 int allow_whole_dev) 135 { *dev_desc = NULL; return -1; } 136 #endif 137 138 #ifdef CONFIG_MAC_PARTITION 139 /* disk/part_mac.c */ 140 int get_partition_info_mac(struct blk_desc *dev_desc, int part, 141 disk_partition_t *info); 142 void print_part_mac(struct blk_desc *dev_desc); 143 int test_part_mac(struct blk_desc *dev_desc); 144 #endif 145 146 #ifdef CONFIG_DOS_PARTITION 147 /* disk/part_dos.c */ 148 int get_partition_info_dos(struct blk_desc *dev_desc, int part, 149 disk_partition_t *info); 150 void print_part_dos(struct blk_desc *dev_desc); 151 int test_part_dos(struct blk_desc *dev_desc); 152 #endif 153 154 #ifdef CONFIG_ISO_PARTITION 155 /* disk/part_iso.c */ 156 int get_partition_info_iso(struct blk_desc *dev_desc, int part, 157 disk_partition_t *info); 158 void print_part_iso(struct blk_desc *dev_desc); 159 int test_part_iso(struct blk_desc *dev_desc); 160 #endif 161 162 #ifdef CONFIG_AMIGA_PARTITION 163 /* disk/part_amiga.c */ 164 int get_partition_info_amiga(struct blk_desc *dev_desc, int part, 165 disk_partition_t *info); 166 void print_part_amiga(struct blk_desc *dev_desc); 167 int test_part_amiga(struct blk_desc *dev_desc); 168 #endif 169 170 #ifdef CONFIG_EFI_PARTITION 171 #include <part_efi.h> 172 /* disk/part_efi.c */ 173 int get_partition_info_efi(struct blk_desc *dev_desc, int part, 174 disk_partition_t *info); 175 /** 176 * get_partition_info_efi_by_name() - Find the specified GPT partition table entry 177 * 178 * @param dev_desc - block device descriptor 179 * @param gpt_name - the specified table entry name 180 * @param info - returns the disk partition info 181 * 182 * @return - '0' on match, '-1' on no match, otherwise error 183 */ 184 int get_partition_info_efi_by_name(struct blk_desc *dev_desc, 185 const char *name, disk_partition_t *info); 186 void print_part_efi(struct blk_desc *dev_desc); 187 int test_part_efi(struct blk_desc *dev_desc); 188 189 /** 190 * write_gpt_table() - Write the GUID Partition Table to disk 191 * 192 * @param dev_desc - block device descriptor 193 * @param gpt_h - pointer to GPT header representation 194 * @param gpt_e - pointer to GPT partition table entries 195 * 196 * @return - zero on success, otherwise error 197 */ 198 int write_gpt_table(struct blk_desc *dev_desc, 199 gpt_header *gpt_h, gpt_entry *gpt_e); 200 201 /** 202 * gpt_fill_pte(): Fill the GPT partition table entry 203 * 204 * @param gpt_h - GPT header representation 205 * @param gpt_e - GPT partition table entries 206 * @param partitions - list of partitions 207 * @param parts - number of partitions 208 * 209 * @return zero on success 210 */ 211 int gpt_fill_pte(gpt_header *gpt_h, gpt_entry *gpt_e, 212 disk_partition_t *partitions, int parts); 213 214 /** 215 * gpt_fill_header(): Fill the GPT header 216 * 217 * @param dev_desc - block device descriptor 218 * @param gpt_h - GPT header representation 219 * @param str_guid - disk guid string representation 220 * @param parts_count - number of partitions 221 * 222 * @return - error on str_guid conversion error 223 */ 224 int gpt_fill_header(struct blk_desc *dev_desc, gpt_header *gpt_h, 225 char *str_guid, int parts_count); 226 227 /** 228 * gpt_restore(): Restore GPT partition table 229 * 230 * @param dev_desc - block device descriptor 231 * @param str_disk_guid - disk GUID 232 * @param partitions - list of partitions 233 * @param parts - number of partitions 234 * 235 * @return zero on success 236 */ 237 int gpt_restore(struct blk_desc *dev_desc, char *str_disk_guid, 238 disk_partition_t *partitions, const int parts_count); 239 240 /** 241 * is_valid_gpt_buf() - Ensure that the Primary GPT information is valid 242 * 243 * @param dev_desc - block device descriptor 244 * @param buf - buffer which contains the MBR and Primary GPT info 245 * 246 * @return - '0' on success, otherwise error 247 */ 248 int is_valid_gpt_buf(struct blk_desc *dev_desc, void *buf); 249 250 /** 251 * write_mbr_and_gpt_partitions() - write MBR, Primary GPT and Backup GPT 252 * 253 * @param dev_desc - block device descriptor 254 * @param buf - buffer which contains the MBR and Primary GPT info 255 * 256 * @return - '0' on success, otherwise error 257 */ 258 int write_mbr_and_gpt_partitions(struct blk_desc *dev_desc, void *buf); 259 260 /** 261 * gpt_verify_headers() - Function to read and CRC32 check of the GPT's header 262 * and partition table entries (PTE) 263 * 264 * As a side effect if sets gpt_head and gpt_pte so they point to GPT data. 265 * 266 * @param dev_desc - block device descriptor 267 * @param gpt_head - pointer to GPT header data read from medium 268 * @param gpt_pte - pointer to GPT partition table enties read from medium 269 * 270 * @return - '0' on success, otherwise error 271 */ 272 int gpt_verify_headers(struct blk_desc *dev_desc, gpt_header *gpt_head, 273 gpt_entry **gpt_pte); 274 275 /** 276 * gpt_verify_partitions() - Function to check if partitions' name, start and 277 * size correspond to '$partitions' env variable 278 * 279 * This function checks if on medium stored GPT data is in sync with information 280 * provided in '$partitions' environment variable. Specificially, name, start 281 * and size of the partition is checked. 282 * 283 * @param dev_desc - block device descriptor 284 * @param partitions - partition data read from '$partitions' env variable 285 * @param parts - number of partitions read from '$partitions' env variable 286 * @param gpt_head - pointer to GPT header data read from medium 287 * @param gpt_pte - pointer to GPT partition table enties read from medium 288 * 289 * @return - '0' on success, otherwise error 290 */ 291 int gpt_verify_partitions(struct blk_desc *dev_desc, 292 disk_partition_t *partitions, int parts, 293 gpt_header *gpt_head, gpt_entry **gpt_pte); 294 #endif 295 296 #endif /* _PART_H */ 297