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c0aebb33 SR |
1 | /* |
2 | * Copyright 2014 Broadcom Corporation. | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0+ | |
5 | */ | |
6 | ||
0ff7e585 | 7 | #include <config.h> |
c0aebb33 | 8 | #include <common.h> |
a5d1e04a | 9 | #include <errno.h> |
3c8f98f5 | 10 | #include <fastboot.h> |
c0aebb33 | 11 | #include <fb_mmc.h> |
3d4ef38d | 12 | #include <image-sparse.h> |
c0aebb33 | 13 | #include <part.h> |
e5bf9878 | 14 | #include <sparse_format.h> |
89792381 | 15 | #include <mmc.h> |
5e0efc1b | 16 | #include <div64.h> |
c0aebb33 | 17 | |
0ff7e585 SR |
18 | #ifndef CONFIG_FASTBOOT_GPT_NAME |
19 | #define CONFIG_FASTBOOT_GPT_NAME GPT_ENTRY_NAME | |
20 | #endif | |
21 | ||
c0aebb33 SR |
22 | static char *response_str; |
23 | ||
a5d1e04a MR |
24 | struct fb_mmc_sparse { |
25 | block_dev_desc_t *dev_desc; | |
26 | }; | |
27 | ||
8a41802f MS |
28 | static int get_partition_info_efi_by_name_or_alias(block_dev_desc_t *dev_desc, |
29 | const char *name, disk_partition_t *info) | |
30 | { | |
31 | int ret; | |
32 | ||
33 | ret = get_partition_info_efi_by_name(dev_desc, name, info); | |
34 | if (ret) { | |
35 | /* strlen("fastboot_partition_alias_") + 32(part_name) + 1 */ | |
36 | char env_alias_name[25 + 32 + 1]; | |
37 | char *aliased_part_name; | |
38 | ||
39 | /* check for alias */ | |
40 | strcpy(env_alias_name, "fastboot_partition_alias_"); | |
41 | strncat(env_alias_name, name, 32); | |
42 | aliased_part_name = getenv(env_alias_name); | |
43 | if (aliased_part_name != NULL) | |
44 | ret = get_partition_info_efi_by_name(dev_desc, | |
45 | aliased_part_name, info); | |
46 | } | |
47 | return ret; | |
48 | } | |
49 | ||
a5d1e04a MR |
50 | |
51 | static int fb_mmc_sparse_write(struct sparse_storage *storage, | |
52 | void *priv, | |
53 | unsigned int offset, | |
54 | unsigned int size, | |
55 | char *data) | |
56 | { | |
57 | struct fb_mmc_sparse *sparse = priv; | |
58 | block_dev_desc_t *dev_desc = sparse->dev_desc; | |
59 | int ret; | |
60 | ||
61 | ret = dev_desc->block_write(dev_desc->dev, offset, size, data); | |
62 | if (!ret) | |
63 | return -EIO; | |
64 | ||
65 | return ret; | |
66 | } | |
67 | ||
c0aebb33 SR |
68 | static void write_raw_image(block_dev_desc_t *dev_desc, disk_partition_t *info, |
69 | const char *part_name, void *buffer, | |
70 | unsigned int download_bytes) | |
71 | { | |
72 | lbaint_t blkcnt; | |
73 | lbaint_t blks; | |
74 | ||
75 | /* determine number of blocks to write */ | |
76 | blkcnt = ((download_bytes + (info->blksz - 1)) & ~(info->blksz - 1)); | |
5e0efc1b | 77 | blkcnt = lldiv(blkcnt, info->blksz); |
c0aebb33 SR |
78 | |
79 | if (blkcnt > info->size) { | |
80 | error("too large for partition: '%s'\n", part_name); | |
3c8f98f5 | 81 | fastboot_fail(response_str, "too large for partition"); |
c0aebb33 SR |
82 | return; |
83 | } | |
84 | ||
85 | puts("Flashing Raw Image\n"); | |
86 | ||
87 | blks = dev_desc->block_write(dev_desc->dev, info->start, blkcnt, | |
88 | buffer); | |
89 | if (blks != blkcnt) { | |
90 | error("failed writing to device %d\n", dev_desc->dev); | |
3c8f98f5 | 91 | fastboot_fail(response_str, "failed writing to device"); |
c0aebb33 SR |
92 | return; |
93 | } | |
94 | ||
95 | printf("........ wrote " LBAFU " bytes to '%s'\n", blkcnt * info->blksz, | |
96 | part_name); | |
3c8f98f5 | 97 | fastboot_okay(response_str, ""); |
c0aebb33 SR |
98 | } |
99 | ||
6c9e00ee MR |
100 | void fb_mmc_flash_write(const char *cmd, unsigned int session_id, |
101 | void *download_buffer, unsigned int download_bytes, | |
102 | char *response) | |
c0aebb33 | 103 | { |
c0aebb33 SR |
104 | block_dev_desc_t *dev_desc; |
105 | disk_partition_t info; | |
106 | ||
107 | /* initialize the response buffer */ | |
108 | response_str = response; | |
109 | ||
110 | dev_desc = get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV); | |
111 | if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) { | |
112 | error("invalid mmc device\n"); | |
3c8f98f5 | 113 | fastboot_fail(response_str, "invalid mmc device"); |
c0aebb33 SR |
114 | return; |
115 | } | |
116 | ||
0ff7e585 SR |
117 | if (strcmp(cmd, CONFIG_FASTBOOT_GPT_NAME) == 0) { |
118 | printf("%s: updating MBR, Primary and Backup GPT(s)\n", | |
119 | __func__); | |
120 | if (is_valid_gpt_buf(dev_desc, download_buffer)) { | |
121 | printf("%s: invalid GPT - refusing to write to flash\n", | |
122 | __func__); | |
3c8f98f5 | 123 | fastboot_fail(response_str, "invalid GPT partition"); |
0ff7e585 SR |
124 | return; |
125 | } | |
126 | if (write_mbr_and_gpt_partitions(dev_desc, download_buffer)) { | |
127 | printf("%s: writing GPT partitions failed\n", __func__); | |
3c8f98f5 MR |
128 | fastboot_fail(response_str, |
129 | "writing GPT partitions failed"); | |
0ff7e585 SR |
130 | return; |
131 | } | |
132 | printf("........ success\n"); | |
3c8f98f5 | 133 | fastboot_okay(response_str, ""); |
0ff7e585 | 134 | return; |
8a41802f | 135 | } else if (get_partition_info_efi_by_name_or_alias(dev_desc, cmd, &info)) { |
c0aebb33 | 136 | error("cannot find partition: '%s'\n", cmd); |
3c8f98f5 | 137 | fastboot_fail(response_str, "cannot find partition"); |
c0aebb33 SR |
138 | return; |
139 | } | |
140 | ||
a5d1e04a MR |
141 | if (is_sparse_image(download_buffer)) { |
142 | struct fb_mmc_sparse sparse_priv; | |
143 | sparse_storage_t sparse; | |
144 | ||
145 | sparse_priv.dev_desc = dev_desc; | |
146 | ||
147 | sparse.block_sz = info.blksz; | |
148 | sparse.start = info.start; | |
149 | sparse.size = info.size; | |
150 | sparse.name = cmd; | |
151 | sparse.write = fb_mmc_sparse_write; | |
152 | ||
153 | printf("Flashing sparse image at offset " LBAFU "\n", | |
154 | info.start); | |
155 | ||
6c9e00ee MR |
156 | store_sparse_image(&sparse, &sparse_priv, session_id, |
157 | download_buffer); | |
a5d1e04a | 158 | } else { |
e5bf9878 SR |
159 | write_raw_image(dev_desc, &info, cmd, download_buffer, |
160 | download_bytes); | |
a5d1e04a | 161 | } |
3c8f98f5 MR |
162 | |
163 | fastboot_okay(response_str, ""); | |
c0aebb33 | 164 | } |
89792381 DK |
165 | |
166 | void fb_mmc_erase(const char *cmd, char *response) | |
167 | { | |
168 | int ret; | |
169 | block_dev_desc_t *dev_desc; | |
170 | disk_partition_t info; | |
171 | lbaint_t blks, blks_start, blks_size, grp_size; | |
172 | struct mmc *mmc = find_mmc_device(CONFIG_FASTBOOT_FLASH_MMC_DEV); | |
173 | ||
174 | if (mmc == NULL) { | |
175 | error("invalid mmc device"); | |
3c8f98f5 | 176 | fastboot_fail(response_str, "invalid mmc device"); |
89792381 DK |
177 | return; |
178 | } | |
179 | ||
180 | /* initialize the response buffer */ | |
181 | response_str = response; | |
182 | ||
183 | dev_desc = get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV); | |
184 | if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) { | |
185 | error("invalid mmc device"); | |
3c8f98f5 | 186 | fastboot_fail(response_str, "invalid mmc device"); |
89792381 DK |
187 | return; |
188 | } | |
189 | ||
8a41802f | 190 | ret = get_partition_info_efi_by_name_or_alias(dev_desc, cmd, &info); |
89792381 DK |
191 | if (ret) { |
192 | error("cannot find partition: '%s'", cmd); | |
3c8f98f5 | 193 | fastboot_fail(response_str, "cannot find partition"); |
89792381 DK |
194 | return; |
195 | } | |
196 | ||
197 | /* Align blocks to erase group size to avoid erasing other partitions */ | |
198 | grp_size = mmc->erase_grp_size; | |
199 | blks_start = (info.start + grp_size - 1) & ~(grp_size - 1); | |
200 | if (info.size >= grp_size) | |
201 | blks_size = (info.size - (blks_start - info.start)) & | |
202 | (~(grp_size - 1)); | |
203 | else | |
204 | blks_size = 0; | |
205 | ||
206 | printf("Erasing blocks " LBAFU " to " LBAFU " due to alignment\n", | |
207 | blks_start, blks_start + blks_size); | |
208 | ||
209 | blks = dev_desc->block_erase(dev_desc->dev, blks_start, blks_size); | |
210 | if (blks != blks_size) { | |
211 | error("failed erasing from device %d", dev_desc->dev); | |
3c8f98f5 | 212 | fastboot_fail(response_str, "failed erasing from device"); |
89792381 DK |
213 | return; |
214 | } | |
215 | ||
216 | printf("........ erased " LBAFU " bytes from '%s'\n", | |
217 | blks_size * info.blksz, cmd); | |
3c8f98f5 | 218 | fastboot_okay(response_str, ""); |
89792381 | 219 | } |