include/part.h

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