2 * (C) Copyright 2000-2004
5 * SPDX-License-Identifier: GPL-2.0+
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 */
23 unsigned char lba48; /* device can use 48bit addr (ATA/ATAPI v7) */
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,
35 unsigned long (*block_write)(struct blk_desc *block_dev,
39 unsigned long (*block_erase)(struct blk_desc *block_dev,
42 void *priv; /* driver private struct pointer */
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))
53 /* Interface types: */
54 #define IF_TYPE_UNKNOWN 0
56 #define IF_TYPE_SCSI 2
57 #define IF_TYPE_ATAPI 3
62 #define IF_TYPE_SATA 8
63 #define IF_TYPE_HOST 9
64 #define IF_TYPE_MAX 10 /* Max number of IF_TYPE_* supported */
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
75 * Type string for U-Boot bootable partitions
77 #define BOOT_PART_TYPE "U-Boot" /* primary boot partition type */
78 #define BOOT_PART_COMP "PPCBoot" /* PPCBoot compatibility type */
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 */
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 */
97 #ifdef CONFIG_PARTITION_TYPE_GUID
98 char type_guid[37]; /* type GUID as string, if exists */
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);
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);
128 static inline struct blk_desc *get_dev(const char *ifname, int dev)
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; }
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)
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,
153 { *dev_desc = NULL; return -1; }
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);
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);
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);
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);
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);
194 * get_partition_info_efi_by_name() - Find the specified GPT partition table entry
196 * @param dev_desc - block device descriptor
197 * @param gpt_name - the specified table entry name
198 * @param info - returns the disk partition info
200 * @return - '0' on match, '-1' on no match, otherwise error
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);
208 * write_gpt_table() - Write the GUID Partition Table to disk
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
214 * @return - zero on success, otherwise error
216 int write_gpt_table(struct blk_desc *dev_desc,
217 gpt_header *gpt_h, gpt_entry *gpt_e);
220 * gpt_fill_pte(): Fill the GPT partition table entry
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
227 * @return zero on success
229 int gpt_fill_pte(gpt_header *gpt_h, gpt_entry *gpt_e,
230 disk_partition_t *partitions, int parts);
233 * gpt_fill_header(): Fill the GPT header
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
240 * @return - error on str_guid conversion error
242 int gpt_fill_header(struct blk_desc *dev_desc, gpt_header *gpt_h,
243 char *str_guid, int parts_count);
246 * gpt_restore(): Restore GPT partition table
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
253 * @return zero on success
255 int gpt_restore(struct blk_desc *dev_desc, char *str_disk_guid,
256 disk_partition_t *partitions, const int parts_count);
259 * is_valid_gpt_buf() - Ensure that the Primary GPT information is valid
261 * @param dev_desc - block device descriptor
262 * @param buf - buffer which contains the MBR and Primary GPT info
264 * @return - '0' on success, otherwise error
266 int is_valid_gpt_buf(struct blk_desc *dev_desc, void *buf);
269 * write_mbr_and_gpt_partitions() - write MBR, Primary GPT and Backup GPT
271 * @param dev_desc - block device descriptor
272 * @param buf - buffer which contains the MBR and Primary GPT info
274 * @return - '0' on success, otherwise error
276 int write_mbr_and_gpt_partitions(struct blk_desc *dev_desc, void *buf);
279 * gpt_verify_headers() - Function to read and CRC32 check of the GPT's header
280 * and partition table entries (PTE)
282 * As a side effect if sets gpt_head and gpt_pte so they point to GPT data.
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
288 * @return - '0' on success, otherwise error
290 int gpt_verify_headers(struct blk_desc *dev_desc, gpt_header *gpt_head,
291 gpt_entry **gpt_pte);
294 * gpt_verify_partitions() - Function to check if partitions' name, start and
295 * size correspond to '$partitions' env variable
297 * This function checks if on medium stored GPT data is in sync with information
298 * provided in '$partitions' environment variable. Specificially, name, start
299 * and size of the partition is checked.
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
307 * @return - '0' on success, otherwise error
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);