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[u-boot] / common / image-sparse.c
1 /*
2  * Copyright (c) 2009, Google Inc.
3  * All rights reserved.
4  *
5  * Copyright (c) 2009-2014, The Linux Foundation. All rights reserved.
6  * Portions Copyright 2014 Broadcom Corporation.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions are met:
10  *     * Redistributions of source code must retain the above copyright
11  *       notice, this list of conditions and the following disclaimer.
12  *     * Redistributions in binary form must reproduce the above copyright
13  *       notice, this list of conditions and the following disclaimer in the
14  *       documentation and/or other materials provided with the distribution.
15  *     * Neither the name of The Linux Foundation nor
16  *       the names of its contributors may be used to endorse or promote
17  *       products derived from this software without specific prior written
18  *       permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23  * NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
27  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
29  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
30  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  *
32  * NOTE:
33  *   Although it is very similar, this license text is not identical
34  *   to the "BSD-3-Clause", therefore, DO NOT MODIFY THIS LICENSE TEXT!
35  */
36
37 #include <config.h>
38 #include <common.h>
39 #include <image-sparse.h>
40 #include <div64.h>
41 #include <malloc.h>
42 #include <part.h>
43 #include <sparse_format.h>
44 #include <fastboot.h>
45
46 #include <linux/math64.h>
47
48 #ifndef CONFIG_FASTBOOT_FLASH_FILLBUF_SIZE
49 #define CONFIG_FASTBOOT_FLASH_FILLBUF_SIZE (1024 * 512)
50 #endif
51
52 void write_sparse_image(
53                 struct sparse_storage *info, const char *part_name,
54                 void *data, unsigned sz)
55 {
56         lbaint_t blk;
57         lbaint_t blkcnt;
58         lbaint_t blks;
59         uint32_t bytes_written = 0;
60         unsigned int chunk;
61         unsigned int offset;
62         unsigned int chunk_data_sz;
63         uint32_t *fill_buf = NULL;
64         uint32_t fill_val;
65         sparse_header_t *sparse_header;
66         chunk_header_t *chunk_header;
67         uint32_t total_blocks = 0;
68         int fill_buf_num_blks;
69         int i;
70         int j;
71
72         fill_buf_num_blks = CONFIG_FASTBOOT_FLASH_FILLBUF_SIZE / info->blksz;
73
74         /* Read and skip over sparse image header */
75         sparse_header = (sparse_header_t *)data;
76
77         data += sparse_header->file_hdr_sz;
78         if (sparse_header->file_hdr_sz > sizeof(sparse_header_t)) {
79                 /*
80                  * Skip the remaining bytes in a header that is longer than
81                  * we expected.
82                  */
83                 data += (sparse_header->file_hdr_sz - sizeof(sparse_header_t));
84         }
85
86         debug("=== Sparse Image Header ===\n");
87         debug("magic: 0x%x\n", sparse_header->magic);
88         debug("major_version: 0x%x\n", sparse_header->major_version);
89         debug("minor_version: 0x%x\n", sparse_header->minor_version);
90         debug("file_hdr_sz: %d\n", sparse_header->file_hdr_sz);
91         debug("chunk_hdr_sz: %d\n", sparse_header->chunk_hdr_sz);
92         debug("blk_sz: %d\n", sparse_header->blk_sz);
93         debug("total_blks: %d\n", sparse_header->total_blks);
94         debug("total_chunks: %d\n", sparse_header->total_chunks);
95
96         /*
97          * Verify that the sparse block size is a multiple of our
98          * storage backend block size
99          */
100         div_u64_rem(sparse_header->blk_sz, info->blksz, &offset);
101         if (offset) {
102                 printf("%s: Sparse image block size issue [%u]\n",
103                        __func__, sparse_header->blk_sz);
104                 fastboot_fail("sparse image block size issue");
105                 return;
106         }
107
108         puts("Flashing Sparse Image\n");
109
110         /* Start processing chunks */
111         blk = info->start;
112         for (chunk = 0; chunk < sparse_header->total_chunks; chunk++) {
113                 /* Read and skip over chunk header */
114                 chunk_header = (chunk_header_t *)data;
115                 data += sizeof(chunk_header_t);
116
117                 if (chunk_header->chunk_type != CHUNK_TYPE_RAW) {
118                         debug("=== Chunk Header ===\n");
119                         debug("chunk_type: 0x%x\n", chunk_header->chunk_type);
120                         debug("chunk_data_sz: 0x%x\n", chunk_header->chunk_sz);
121                         debug("total_size: 0x%x\n", chunk_header->total_sz);
122                 }
123
124                 if (sparse_header->chunk_hdr_sz > sizeof(chunk_header_t)) {
125                         /*
126                          * Skip the remaining bytes in a header that is longer
127                          * than we expected.
128                          */
129                         data += (sparse_header->chunk_hdr_sz -
130                                  sizeof(chunk_header_t));
131                 }
132
133                 chunk_data_sz = sparse_header->blk_sz * chunk_header->chunk_sz;
134                 blkcnt = chunk_data_sz / info->blksz;
135                 switch (chunk_header->chunk_type) {
136                 case CHUNK_TYPE_RAW:
137                         if (chunk_header->total_sz !=
138                             (sparse_header->chunk_hdr_sz + chunk_data_sz)) {
139                                 fastboot_fail(
140                                         "Bogus chunk size for chunk type Raw");
141                                 return;
142                         }
143
144                         if (blk + blkcnt > info->start + info->size) {
145                                 printf(
146                                     "%s: Request would exceed partition size!\n",
147                                     __func__);
148                                 fastboot_fail(
149                                     "Request would exceed partition size!");
150                                 return;
151                         }
152
153                         blks = info->write(info, blk, blkcnt, data);
154                         /* blks might be > blkcnt (eg. NAND bad-blocks) */
155                         if (blks < blkcnt) {
156                                 printf("%s: %s" LBAFU " [" LBAFU "]\n",
157                                        __func__, "Write failed, block #",
158                                        blk, blks);
159                                 fastboot_fail(
160                                               "flash write failure");
161                                 return;
162                         }
163                         blk += blks;
164                         bytes_written += blkcnt * info->blksz;
165                         total_blocks += chunk_header->chunk_sz;
166                         data += chunk_data_sz;
167                         break;
168
169                 case CHUNK_TYPE_FILL:
170                         if (chunk_header->total_sz !=
171                             (sparse_header->chunk_hdr_sz + sizeof(uint32_t))) {
172                                 fastboot_fail(
173                                         "Bogus chunk size for chunk type FILL");
174                                 return;
175                         }
176
177                         fill_buf = (uint32_t *)
178                                    memalign(ARCH_DMA_MINALIGN,
179                                             ROUNDUP(
180                                                 info->blksz * fill_buf_num_blks,
181                                                 ARCH_DMA_MINALIGN));
182                         if (!fill_buf) {
183                                 fastboot_fail(
184                                         "Malloc failed for: CHUNK_TYPE_FILL");
185                                 return;
186                         }
187
188                         fill_val = *(uint32_t *)data;
189                         data = (char *)data + sizeof(uint32_t);
190
191                         for (i = 0;
192                              i < (info->blksz * fill_buf_num_blks /
193                                   sizeof(fill_val));
194                              i++)
195                                 fill_buf[i] = fill_val;
196
197                         if (blk + blkcnt > info->start + info->size) {
198                                 printf(
199                                     "%s: Request would exceed partition size!\n",
200                                     __func__);
201                                 fastboot_fail(
202                                     "Request would exceed partition size!");
203                                 return;
204                         }
205
206                         for (i = 0; i < blkcnt;) {
207                                 j = blkcnt - i;
208                                 if (j > fill_buf_num_blks)
209                                         j = fill_buf_num_blks;
210                                 blks = info->write(info, blk, j, fill_buf);
211                                 /* blks might be > j (eg. NAND bad-blocks) */
212                                 if (blks < j) {
213                                         printf("%s: %s " LBAFU " [%d]\n",
214                                                __func__,
215                                                "Write failed, block #",
216                                                blk, j);
217                                         fastboot_fail(
218                                                       "flash write failure");
219                                         free(fill_buf);
220                                         return;
221                                 }
222                                 blk += blks;
223                                 i += j;
224                         }
225                         bytes_written += blkcnt * info->blksz;
226                         total_blocks += chunk_data_sz / sparse_header->blk_sz;
227                         free(fill_buf);
228                         break;
229
230                 case CHUNK_TYPE_DONT_CARE:
231                         blk += info->reserve(info, blk, blkcnt);
232                         total_blocks += chunk_header->chunk_sz;
233                         break;
234
235                 case CHUNK_TYPE_CRC32:
236                         if (chunk_header->total_sz !=
237                             sparse_header->chunk_hdr_sz) {
238                                 fastboot_fail(
239                                         "Bogus chunk size for chunk type Dont Care");
240                                 return;
241                         }
242                         total_blocks += chunk_header->chunk_sz;
243                         data += chunk_data_sz;
244                         break;
245
246                 default:
247                         printf("%s: Unknown chunk type: %x\n", __func__,
248                                chunk_header->chunk_type);
249                         fastboot_fail("Unknown chunk type");
250                         return;
251                 }
252         }
253
254         debug("Wrote %d blocks, expected to write %d blocks\n",
255               total_blocks, sparse_header->total_blks);
256         printf("........ wrote %u bytes to '%s'\n", bytes_written, part_name);
257
258         if (total_blocks != sparse_header->total_blks)
259                 fastboot_fail("sparse image write failure");
260         else
261                 fastboot_okay("");
262
263         return;
264 }