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bf8940d3 MR |
1 | /* |
2 | * Copyright 2014 Broadcom Corporation. | |
3 | * Copyright 2015 Free Electrons. | |
4 | * | |
5 | * SPDX-License-Identifier: GPL-2.0+ | |
6 | */ | |
7 | ||
8 | #include <config.h> | |
9 | #include <common.h> | |
10 | ||
bf8940d3 | 11 | #include <fastboot.h> |
3d4ef38d | 12 | #include <image-sparse.h> |
bf8940d3 MR |
13 | |
14 | #include <linux/mtd/mtd.h> | |
15 | #include <jffs2/jffs2.h> | |
16 | #include <nand.h> | |
17 | ||
bf8940d3 | 18 | struct fb_nand_sparse { |
cc0f08cd | 19 | struct mtd_info *mtd; |
bf8940d3 MR |
20 | struct part_info *part; |
21 | }; | |
22 | ||
6fb77c48 MR |
23 | __weak int board_fastboot_erase_partition_setup(char *name) |
24 | { | |
25 | return 0; | |
26 | } | |
27 | ||
28 | __weak int board_fastboot_write_partition_setup(char *name) | |
29 | { | |
30 | return 0; | |
31 | } | |
32 | ||
9bc34799 | 33 | static int fb_nand_lookup(const char *partname, |
61717571 | 34 | struct mtd_info **mtd, |
bf8940d3 MR |
35 | struct part_info **part) |
36 | { | |
37 | struct mtd_device *dev; | |
38 | int ret; | |
39 | u8 pnum; | |
40 | ||
41 | ret = mtdparts_init(); | |
42 | if (ret) { | |
43 | error("Cannot initialize MTD partitions\n"); | |
9bc34799 | 44 | fastboot_fail("cannot init mtdparts"); |
bf8940d3 MR |
45 | return ret; |
46 | } | |
47 | ||
48 | ret = find_dev_and_part(partname, &dev, &pnum, part); | |
49 | if (ret) { | |
50 | error("cannot find partition: '%s'", partname); | |
9bc34799 | 51 | fastboot_fail("cannot find partition"); |
bf8940d3 MR |
52 | return ret; |
53 | } | |
54 | ||
55 | if (dev->id->type != MTD_DEV_TYPE_NAND) { | |
56 | error("partition '%s' is not stored on a NAND device", | |
57 | partname); | |
9bc34799 | 58 | fastboot_fail("not a NAND device"); |
bf8940d3 MR |
59 | return -EINVAL; |
60 | } | |
61 | ||
b616d9b0 | 62 | *mtd = nand_info[dev->id->num]; |
bf8940d3 MR |
63 | |
64 | return 0; | |
65 | } | |
66 | ||
151c06ec | 67 | static int _fb_nand_erase(struct mtd_info *mtd, struct part_info *part) |
bf8940d3 MR |
68 | { |
69 | nand_erase_options_t opts; | |
70 | int ret; | |
71 | ||
72 | memset(&opts, 0, sizeof(opts)); | |
73 | opts.offset = part->offset; | |
74 | opts.length = part->size; | |
75 | opts.quiet = 1; | |
76 | ||
77 | printf("Erasing blocks 0x%llx to 0x%llx\n", | |
78 | part->offset, part->offset + part->size); | |
79 | ||
151c06ec | 80 | ret = nand_erase_opts(mtd, &opts); |
bf8940d3 MR |
81 | if (ret) |
82 | return ret; | |
83 | ||
84 | printf("........ erased 0x%llx bytes from '%s'\n", | |
85 | part->size, part->name); | |
86 | ||
87 | return 0; | |
88 | } | |
89 | ||
151c06ec | 90 | static int _fb_nand_write(struct mtd_info *mtd, struct part_info *part, |
bf8940d3 MR |
91 | void *buffer, unsigned int offset, |
92 | unsigned int length, size_t *written) | |
93 | { | |
94 | int flags = WITH_WR_VERIFY; | |
95 | ||
96 | #ifdef CONFIG_FASTBOOT_FLASH_NAND_TRIMFFS | |
97 | flags |= WITH_DROP_FFS; | |
98 | #endif | |
99 | ||
151c06ec | 100 | return nand_write_skip_bad(mtd, offset, &length, written, |
bf8940d3 MR |
101 | part->size - (offset - part->offset), |
102 | buffer, flags); | |
103 | } | |
104 | ||
cc0f08cd SR |
105 | static lbaint_t fb_nand_sparse_write(struct sparse_storage *info, |
106 | lbaint_t blk, lbaint_t blkcnt, const void *buffer) | |
bf8940d3 | 107 | { |
cc0f08cd | 108 | struct fb_nand_sparse *sparse = info->priv; |
bf8940d3 MR |
109 | size_t written; |
110 | int ret; | |
111 | ||
cc0f08cd SR |
112 | ret = _fb_nand_write(sparse->mtd, sparse->part, (void *)buffer, |
113 | blk * info->blksz, | |
114 | blkcnt * info->blksz, &written); | |
bf8940d3 MR |
115 | if (ret < 0) { |
116 | printf("Failed to write sparse chunk\n"); | |
117 | return ret; | |
118 | } | |
119 | ||
cc0f08cd SR |
120 | /* TODO - verify that the value "written" includes the "bad-blocks" ... */ |
121 | ||
122 | /* | |
123 | * the return value must be 'blkcnt' ("good-blocks") plus the | |
124 | * number of "bad-blocks" encountered within this space... | |
125 | */ | |
126 | return written / info->blksz; | |
bf8940d3 MR |
127 | } |
128 | ||
2c724046 SR |
129 | static lbaint_t fb_nand_sparse_reserve(struct sparse_storage *info, |
130 | lbaint_t blk, lbaint_t blkcnt) | |
131 | { | |
132 | int bad_blocks = 0; | |
133 | ||
134 | /* | |
135 | * TODO - implement a function to determine the total number | |
136 | * of blocks which must be used in order to reserve the specified | |
137 | * number ("blkcnt") of "good-blocks", starting at "blk"... | |
138 | * ( possibly something like the "check_skip_len()" function ) | |
139 | */ | |
140 | ||
141 | /* | |
142 | * the return value must be 'blkcnt' ("good-blocks") plus the | |
143 | * number of "bad-blocks" encountered within this space... | |
144 | */ | |
145 | return blkcnt + bad_blocks; | |
146 | } | |
147 | ||
cc0f08cd | 148 | void fb_nand_flash_write(const char *cmd, void *download_buffer, |
9bc34799 | 149 | unsigned int download_bytes) |
bf8940d3 MR |
150 | { |
151 | struct part_info *part; | |
151c06ec | 152 | struct mtd_info *mtd = NULL; |
bf8940d3 MR |
153 | int ret; |
154 | ||
9bc34799 | 155 | ret = fb_nand_lookup(cmd, &mtd, &part); |
bf8940d3 MR |
156 | if (ret) { |
157 | error("invalid NAND device"); | |
9bc34799 | 158 | fastboot_fail("invalid NAND device"); |
bf8940d3 MR |
159 | return; |
160 | } | |
161 | ||
6fb77c48 MR |
162 | ret = board_fastboot_write_partition_setup(part->name); |
163 | if (ret) | |
164 | return; | |
165 | ||
bf8940d3 MR |
166 | if (is_sparse_image(download_buffer)) { |
167 | struct fb_nand_sparse sparse_priv; | |
cc0f08cd | 168 | struct sparse_storage sparse; |
bf8940d3 | 169 | |
cc0f08cd | 170 | sparse_priv.mtd = mtd; |
bf8940d3 MR |
171 | sparse_priv.part = part; |
172 | ||
cc0f08cd SR |
173 | sparse.blksz = mtd->writesize; |
174 | sparse.start = part->offset / sparse.blksz; | |
175 | sparse.size = part->size / sparse.blksz; | |
bf8940d3 | 176 | sparse.write = fb_nand_sparse_write; |
2c724046 | 177 | sparse.reserve = fb_nand_sparse_reserve; |
bf8940d3 | 178 | |
cc0f08cd SR |
179 | printf("Flashing sparse image at offset " LBAFU "\n", |
180 | sparse.start); | |
181 | ||
182 | sparse.priv = &sparse_priv; | |
183 | write_sparse_image(&sparse, cmd, download_buffer, | |
9bc34799 | 184 | download_bytes); |
bf8940d3 MR |
185 | } else { |
186 | printf("Flashing raw image at offset 0x%llx\n", | |
187 | part->offset); | |
188 | ||
151c06ec | 189 | ret = _fb_nand_write(mtd, part, download_buffer, part->offset, |
bf8940d3 MR |
190 | download_bytes, NULL); |
191 | ||
192 | printf("........ wrote %u bytes to '%s'\n", | |
193 | download_bytes, part->name); | |
194 | } | |
195 | ||
196 | if (ret) { | |
9bc34799 | 197 | fastboot_fail("error writing the image"); |
bf8940d3 MR |
198 | return; |
199 | } | |
200 | ||
9bc34799 | 201 | fastboot_okay(""); |
bf8940d3 MR |
202 | } |
203 | ||
9bc34799 | 204 | void fb_nand_erase(const char *cmd) |
bf8940d3 MR |
205 | { |
206 | struct part_info *part; | |
151c06ec | 207 | struct mtd_info *mtd = NULL; |
bf8940d3 MR |
208 | int ret; |
209 | ||
9bc34799 | 210 | ret = fb_nand_lookup(cmd, &mtd, &part); |
bf8940d3 MR |
211 | if (ret) { |
212 | error("invalid NAND device"); | |
9bc34799 | 213 | fastboot_fail("invalid NAND device"); |
bf8940d3 MR |
214 | return; |
215 | } | |
216 | ||
6fb77c48 MR |
217 | ret = board_fastboot_erase_partition_setup(part->name); |
218 | if (ret) | |
219 | return; | |
220 | ||
151c06ec | 221 | ret = _fb_nand_erase(mtd, part); |
bf8940d3 | 222 | if (ret) { |
151c06ec | 223 | error("failed erasing from device %s", mtd->name); |
9bc34799 | 224 | fastboot_fail("failed erasing from device"); |
bf8940d3 MR |
225 | return; |
226 | } | |
227 | ||
9bc34799 | 228 | fastboot_okay(""); |
bf8940d3 | 229 | } |