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 struct blk_desc *get_dev(const char *ifname, int dev); 57 struct blk_desc *ide_get_dev(int dev); 58 struct blk_desc *sata_get_dev(int dev); 59 struct blk_desc *scsi_get_dev(int dev); 60 struct blk_desc *usb_stor_get_dev(int dev); 61 struct blk_desc *mmc_get_dev(int dev); 62 int mmc_select_hwpart(int dev_num, int hwpart); 63 struct blk_desc *systemace_get_dev(int dev); 64 struct blk_desc *mg_disk_get_dev(int dev); 65 struct blk_desc *host_get_dev(int dev); 66 int host_get_dev_err(int dev, struct blk_desc **blk_devp); 67 68 /* disk/part.c */ 69 int get_partition_info(struct blk_desc *dev_desc, int part, 70 disk_partition_t *info); 71 void print_part(struct blk_desc *dev_desc); 72 void init_part(struct blk_desc *dev_desc); 73 void dev_print(struct blk_desc *dev_desc); 74 int get_device(const char *ifname, const char *dev_str, 75 struct blk_desc **dev_desc); 76 int get_device_and_partition(const char *ifname, const char *dev_part_str, 77 struct blk_desc **dev_desc, 78 disk_partition_t *info, int allow_whole_dev); 79 #else 80 static inline struct blk_desc *get_dev(const char *ifname, int dev) 81 { return NULL; } 82 static inline struct blk_desc *ide_get_dev(int dev) { return NULL; } 83 static inline struct blk_desc *sata_get_dev(int dev) { return NULL; } 84 static inline struct blk_desc *scsi_get_dev(int dev) { return NULL; } 85 static inline struct blk_desc *usb_stor_get_dev(int dev) { return NULL; } 86 static inline struct blk_desc *mmc_get_dev(int dev) { return NULL; } 87 static inline int mmc_select_hwpart(int dev_num, int hwpart) { return -1; } 88 static inline struct blk_desc *systemace_get_dev(int dev) { return NULL; } 89 static inline struct blk_desc *mg_disk_get_dev(int dev) { return NULL; } 90 static inline struct blk_desc *host_get_dev(int dev) { return NULL; } 91 92 static inline int get_partition_info(struct blk_desc *dev_desc, int part, 93 disk_partition_t *info) { return -1; } 94 static inline void print_part(struct blk_desc *dev_desc) {} 95 static inline void init_part(struct blk_desc *dev_desc) {} 96 static inline void dev_print(struct blk_desc *dev_desc) {} 97 static inline int get_device(const char *ifname, const char *dev_str, 98 struct blk_desc **dev_desc) 99 { return -1; } 100 static inline int get_device_and_partition(const char *ifname, 101 const char *dev_part_str, 102 struct blk_desc **dev_desc, 103 disk_partition_t *info, 104 int allow_whole_dev) 105 { *dev_desc = NULL; return -1; } 106 #endif 107 108 #ifdef CONFIG_MAC_PARTITION 109 /* disk/part_mac.c */ 110 int get_partition_info_mac(struct blk_desc *dev_desc, int part, 111 disk_partition_t *info); 112 void print_part_mac(struct blk_desc *dev_desc); 113 int test_part_mac(struct blk_desc *dev_desc); 114 #endif 115 116 #ifdef CONFIG_DOS_PARTITION 117 /* disk/part_dos.c */ 118 int get_partition_info_dos(struct blk_desc *dev_desc, int part, 119 disk_partition_t *info); 120 void print_part_dos(struct blk_desc *dev_desc); 121 int test_part_dos(struct blk_desc *dev_desc); 122 #endif 123 124 #ifdef CONFIG_ISO_PARTITION 125 /* disk/part_iso.c */ 126 int get_partition_info_iso(struct blk_desc *dev_desc, int part, 127 disk_partition_t *info); 128 void print_part_iso(struct blk_desc *dev_desc); 129 int test_part_iso(struct blk_desc *dev_desc); 130 #endif 131 132 #ifdef CONFIG_AMIGA_PARTITION 133 /* disk/part_amiga.c */ 134 int get_partition_info_amiga(struct blk_desc *dev_desc, int part, 135 disk_partition_t *info); 136 void print_part_amiga(struct blk_desc *dev_desc); 137 int test_part_amiga(struct blk_desc *dev_desc); 138 #endif 139 140 #ifdef CONFIG_EFI_PARTITION 141 #include <part_efi.h> 142 /* disk/part_efi.c */ 143 int get_partition_info_efi(struct blk_desc *dev_desc, int part, 144 disk_partition_t *info); 145 /** 146 * get_partition_info_efi_by_name() - Find the specified GPT partition table entry 147 * 148 * @param dev_desc - block device descriptor 149 * @param gpt_name - the specified table entry name 150 * @param info - returns the disk partition info 151 * 152 * @return - '0' on match, '-1' on no match, otherwise error 153 */ 154 int get_partition_info_efi_by_name(struct blk_desc *dev_desc, 155 const char *name, disk_partition_t *info); 156 void print_part_efi(struct blk_desc *dev_desc); 157 int test_part_efi(struct blk_desc *dev_desc); 158 159 /** 160 * write_gpt_table() - Write the GUID Partition Table to disk 161 * 162 * @param dev_desc - block device descriptor 163 * @param gpt_h - pointer to GPT header representation 164 * @param gpt_e - pointer to GPT partition table entries 165 * 166 * @return - zero on success, otherwise error 167 */ 168 int write_gpt_table(struct blk_desc *dev_desc, 169 gpt_header *gpt_h, gpt_entry *gpt_e); 170 171 /** 172 * gpt_fill_pte(): Fill the GPT partition table entry 173 * 174 * @param gpt_h - GPT header representation 175 * @param gpt_e - GPT partition table entries 176 * @param partitions - list of partitions 177 * @param parts - number of partitions 178 * 179 * @return zero on success 180 */ 181 int gpt_fill_pte(gpt_header *gpt_h, gpt_entry *gpt_e, 182 disk_partition_t *partitions, int parts); 183 184 /** 185 * gpt_fill_header(): Fill the GPT header 186 * 187 * @param dev_desc - block device descriptor 188 * @param gpt_h - GPT header representation 189 * @param str_guid - disk guid string representation 190 * @param parts_count - number of partitions 191 * 192 * @return - error on str_guid conversion error 193 */ 194 int gpt_fill_header(struct blk_desc *dev_desc, gpt_header *gpt_h, 195 char *str_guid, int parts_count); 196 197 /** 198 * gpt_restore(): Restore GPT partition table 199 * 200 * @param dev_desc - block device descriptor 201 * @param str_disk_guid - disk GUID 202 * @param partitions - list of partitions 203 * @param parts - number of partitions 204 * 205 * @return zero on success 206 */ 207 int gpt_restore(struct blk_desc *dev_desc, char *str_disk_guid, 208 disk_partition_t *partitions, const int parts_count); 209 210 /** 211 * is_valid_gpt_buf() - Ensure that the Primary GPT information is valid 212 * 213 * @param dev_desc - block device descriptor 214 * @param buf - buffer which contains the MBR and Primary GPT info 215 * 216 * @return - '0' on success, otherwise error 217 */ 218 int is_valid_gpt_buf(struct blk_desc *dev_desc, void *buf); 219 220 /** 221 * write_mbr_and_gpt_partitions() - write MBR, Primary GPT and Backup GPT 222 * 223 * @param dev_desc - block device descriptor 224 * @param buf - buffer which contains the MBR and Primary GPT info 225 * 226 * @return - '0' on success, otherwise error 227 */ 228 int write_mbr_and_gpt_partitions(struct blk_desc *dev_desc, void *buf); 229 230 /** 231 * gpt_verify_headers() - Function to read and CRC32 check of the GPT's header 232 * and partition table entries (PTE) 233 * 234 * As a side effect if sets gpt_head and gpt_pte so they point to GPT data. 235 * 236 * @param dev_desc - block device descriptor 237 * @param gpt_head - pointer to GPT header data read from medium 238 * @param gpt_pte - pointer to GPT partition table enties read from medium 239 * 240 * @return - '0' on success, otherwise error 241 */ 242 int gpt_verify_headers(struct blk_desc *dev_desc, gpt_header *gpt_head, 243 gpt_entry **gpt_pte); 244 245 /** 246 * gpt_verify_partitions() - Function to check if partitions' name, start and 247 * size correspond to '$partitions' env variable 248 * 249 * This function checks if on medium stored GPT data is in sync with information 250 * provided in '$partitions' environment variable. Specificially, name, start 251 * and size of the partition is checked. 252 * 253 * @param dev_desc - block device descriptor 254 * @param partitions - partition data read from '$partitions' env variable 255 * @param parts - number of partitions read from '$partitions' env variable 256 * @param gpt_head - pointer to GPT header data read from medium 257 * @param gpt_pte - pointer to GPT partition table enties read from medium 258 * 259 * @return - '0' on success, otherwise error 260 */ 261 int gpt_verify_partitions(struct blk_desc *dev_desc, 262 disk_partition_t *partitions, int parts, 263 gpt_header *gpt_head, gpt_entry **gpt_pte); 264 #endif 265 266 #endif /* _PART_H */ 267