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-rw-r--r--include/mtd/ubi-header.h101
1 files changed, 36 insertions, 65 deletions
diff --git a/include/mtd/ubi-header.h b/include/mtd/ubi-header.h
index fa479c71aa34..74efa7763479 100644
--- a/include/mtd/ubi-header.h
+++ b/include/mtd/ubi-header.h
@@ -74,42 +74,13 @@ enum {
74 UBI_COMPAT_REJECT = 5 74 UBI_COMPAT_REJECT = 5
75}; 75};
76 76
77/*
78 * ubi16_t/ubi32_t/ubi64_t - 16, 32, and 64-bit integers used in UBI on-flash
79 * data structures.
80 */
81typedef struct {
82 uint16_t int16;
83} __attribute__ ((packed)) ubi16_t;
84
85typedef struct {
86 uint32_t int32;
87} __attribute__ ((packed)) ubi32_t;
88
89typedef struct {
90 uint64_t int64;
91} __attribute__ ((packed)) ubi64_t;
92
93/*
94 * In this implementation of UBI uses the big-endian format for on-flash
95 * integers. The below are the corresponding conversion macros.
96 */
97#define cpu_to_ubi16(x) ((ubi16_t){__cpu_to_be16(x)})
98#define ubi16_to_cpu(x) ((uint16_t)__be16_to_cpu((x).int16))
99
100#define cpu_to_ubi32(x) ((ubi32_t){__cpu_to_be32(x)})
101#define ubi32_to_cpu(x) ((uint32_t)__be32_to_cpu((x).int32))
102
103#define cpu_to_ubi64(x) ((ubi64_t){__cpu_to_be64(x)})
104#define ubi64_to_cpu(x) ((uint64_t)__be64_to_cpu((x).int64))
105
106/* Sizes of UBI headers */ 77/* Sizes of UBI headers */
107#define UBI_EC_HDR_SIZE sizeof(struct ubi_ec_hdr) 78#define UBI_EC_HDR_SIZE sizeof(struct ubi_ec_hdr)
108#define UBI_VID_HDR_SIZE sizeof(struct ubi_vid_hdr) 79#define UBI_VID_HDR_SIZE sizeof(struct ubi_vid_hdr)
109 80
110/* Sizes of UBI headers without the ending CRC */ 81/* Sizes of UBI headers without the ending CRC */
111#define UBI_EC_HDR_SIZE_CRC (UBI_EC_HDR_SIZE - sizeof(ubi32_t)) 82#define UBI_EC_HDR_SIZE_CRC (UBI_EC_HDR_SIZE - sizeof(__be32))
112#define UBI_VID_HDR_SIZE_CRC (UBI_VID_HDR_SIZE - sizeof(ubi32_t)) 83#define UBI_VID_HDR_SIZE_CRC (UBI_VID_HDR_SIZE - sizeof(__be32))
113 84
114/** 85/**
115 * struct ubi_ec_hdr - UBI erase counter header. 86 * struct ubi_ec_hdr - UBI erase counter header.
@@ -137,14 +108,14 @@ typedef struct {
137 * eraseblocks. 108 * eraseblocks.
138 */ 109 */
139struct ubi_ec_hdr { 110struct ubi_ec_hdr {
140 ubi32_t magic; 111 __be32 magic;
141 uint8_t version; 112 __u8 version;
142 uint8_t padding1[3]; 113 __u8 padding1[3];
143 ubi64_t ec; /* Warning: the current limit is 31-bit anyway! */ 114 __be64 ec; /* Warning: the current limit is 31-bit anyway! */
144 ubi32_t vid_hdr_offset; 115 __be32 vid_hdr_offset;
145 ubi32_t data_offset; 116 __be32 data_offset;
146 uint8_t padding2[36]; 117 __u8 padding2[36];
147 ubi32_t hdr_crc; 118 __be32 hdr_crc;
148} __attribute__ ((packed)); 119} __attribute__ ((packed));
149 120
150/** 121/**
@@ -262,22 +233,22 @@ struct ubi_ec_hdr {
262 * software (say, cramfs) on top of the UBI volume. 233 * software (say, cramfs) on top of the UBI volume.
263 */ 234 */
264struct ubi_vid_hdr { 235struct ubi_vid_hdr {
265 ubi32_t magic; 236 __be32 magic;
266 uint8_t version; 237 __u8 version;
267 uint8_t vol_type; 238 __u8 vol_type;
268 uint8_t copy_flag; 239 __u8 copy_flag;
269 uint8_t compat; 240 __u8 compat;
270 ubi32_t vol_id; 241 __be32 vol_id;
271 ubi32_t lnum; 242 __be32 lnum;
272 ubi32_t leb_ver; /* obsolete, to be removed, don't use */ 243 __be32 leb_ver; /* obsolete, to be removed, don't use */
273 ubi32_t data_size; 244 __be32 data_size;
274 ubi32_t used_ebs; 245 __be32 used_ebs;
275 ubi32_t data_pad; 246 __be32 data_pad;
276 ubi32_t data_crc; 247 __be32 data_crc;
277 uint8_t padding1[4]; 248 __u8 padding1[4];
278 ubi64_t sqnum; 249 __be64 sqnum;
279 uint8_t padding2[12]; 250 __u8 padding2[12];
280 ubi32_t hdr_crc; 251 __be32 hdr_crc;
281} __attribute__ ((packed)); 252} __attribute__ ((packed));
282 253
283/* Internal UBI volumes count */ 254/* Internal UBI volumes count */
@@ -306,7 +277,7 @@ struct ubi_vid_hdr {
306#define UBI_VTBL_RECORD_SIZE sizeof(struct ubi_vtbl_record) 277#define UBI_VTBL_RECORD_SIZE sizeof(struct ubi_vtbl_record)
307 278
308/* Size of the volume table record without the ending CRC */ 279/* Size of the volume table record without the ending CRC */
309#define UBI_VTBL_RECORD_SIZE_CRC (UBI_VTBL_RECORD_SIZE - sizeof(ubi32_t)) 280#define UBI_VTBL_RECORD_SIZE_CRC (UBI_VTBL_RECORD_SIZE - sizeof(__be32))
310 281
311/** 282/**
312 * struct ubi_vtbl_record - a record in the volume table. 283 * struct ubi_vtbl_record - a record in the volume table.
@@ -346,15 +317,15 @@ struct ubi_vid_hdr {
346 * Empty records contain all zeroes and the CRC checksum of those zeroes. 317 * Empty records contain all zeroes and the CRC checksum of those zeroes.
347 */ 318 */
348struct ubi_vtbl_record { 319struct ubi_vtbl_record {
349 ubi32_t reserved_pebs; 320 __be32 reserved_pebs;
350 ubi32_t alignment; 321 __be32 alignment;
351 ubi32_t data_pad; 322 __be32 data_pad;
352 uint8_t vol_type; 323 __u8 vol_type;
353 uint8_t upd_marker; 324 __u8 upd_marker;
354 ubi16_t name_len; 325 __be16 name_len;
355 uint8_t name[UBI_VOL_NAME_MAX+1]; 326 __u8 name[UBI_VOL_NAME_MAX+1];
356 uint8_t padding2[24]; 327 __u8 padding2[24];
357 ubi32_t crc; 328 __be32 crc;
358} __attribute__ ((packed)); 329} __attribute__ ((packed));
359 330
360#endif /* !__UBI_HEADER_H__ */ 331#endif /* !__UBI_HEADER_H__ */