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