2 * Copyright 2014 Broadcom Corporation.
4 * SPDX-License-Identifier: GPL-2.0+
13 #include <image-sparse.h>
15 #include <sparse_format.h>
19 #ifndef CONFIG_FASTBOOT_GPT_NAME
20 #define CONFIG_FASTBOOT_GPT_NAME GPT_ENTRY_NAME
23 static char *response_str
;
25 struct fb_mmc_sparse
{
26 struct blk_desc
*dev_desc
;
29 static int part_get_info_efi_by_name_or_alias(struct blk_desc
*dev_desc
,
30 const char *name
, disk_partition_t
*info
)
34 ret
= part_get_info_efi_by_name(dev_desc
, name
, info
);
36 /* strlen("fastboot_partition_alias_") + 32(part_name) + 1 */
37 char env_alias_name
[25 + 32 + 1];
38 char *aliased_part_name
;
41 strcpy(env_alias_name
, "fastboot_partition_alias_");
42 strncat(env_alias_name
, name
, 32);
43 aliased_part_name
= getenv(env_alias_name
);
44 if (aliased_part_name
!= NULL
)
45 ret
= part_get_info_efi_by_name(dev_desc
,
46 aliased_part_name
, info
);
52 static int fb_mmc_sparse_write(struct sparse_storage
*storage
,
58 struct fb_mmc_sparse
*sparse
= priv
;
59 struct blk_desc
*dev_desc
= sparse
->dev_desc
;
62 ret
= blk_dwrite(dev_desc
, offset
, size
, data
);
69 static void write_raw_image(struct blk_desc
*dev_desc
, disk_partition_t
*info
,
70 const char *part_name
, void *buffer
,
71 unsigned int download_bytes
)
76 /* determine number of blocks to write */
77 blkcnt
= ((download_bytes
+ (info
->blksz
- 1)) & ~(info
->blksz
- 1));
78 blkcnt
= lldiv(blkcnt
, info
->blksz
);
80 if (blkcnt
> info
->size
) {
81 error("too large for partition: '%s'\n", part_name
);
82 fastboot_fail(response_str
, "too large for partition");
86 puts("Flashing Raw Image\n");
88 blks
= blk_dwrite(dev_desc
, info
->start
, blkcnt
, buffer
);
90 error("failed writing to device %d\n", dev_desc
->devnum
);
91 fastboot_fail(response_str
, "failed writing to device");
95 printf("........ wrote " LBAFU
" bytes to '%s'\n", blkcnt
* info
->blksz
,
97 fastboot_okay(response_str
, "");
100 void fb_mmc_flash_write(const char *cmd
, unsigned int session_id
,
101 void *download_buffer
, unsigned int download_bytes
,
104 struct blk_desc
*dev_desc
;
105 disk_partition_t info
;
107 /* initialize the response buffer */
108 response_str
= response
;
110 dev_desc
= blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV
);
111 if (!dev_desc
|| dev_desc
->type
== DEV_TYPE_UNKNOWN
) {
112 error("invalid mmc device\n");
113 fastboot_fail(response_str
, "invalid mmc device");
117 if (strcmp(cmd
, CONFIG_FASTBOOT_GPT_NAME
) == 0) {
118 printf("%s: updating MBR, Primary and Backup GPT(s)\n",
120 if (is_valid_gpt_buf(dev_desc
, download_buffer
)) {
121 printf("%s: invalid GPT - refusing to write to flash\n",
123 fastboot_fail(response_str
, "invalid GPT partition");
126 if (write_mbr_and_gpt_partitions(dev_desc
, download_buffer
)) {
127 printf("%s: writing GPT partitions failed\n", __func__
);
128 fastboot_fail(response_str
,
129 "writing GPT partitions failed");
132 printf("........ success\n");
133 fastboot_okay(response_str
, "");
135 } else if (part_get_info_efi_by_name_or_alias(dev_desc
, cmd
, &info
)) {
136 error("cannot find partition: '%s'\n", cmd
);
137 fastboot_fail(response_str
, "cannot find partition");
141 if (is_sparse_image(download_buffer
)) {
142 struct fb_mmc_sparse sparse_priv
;
143 sparse_storage_t sparse
;
145 sparse_priv
.dev_desc
= dev_desc
;
147 sparse
.block_sz
= info
.blksz
;
148 sparse
.start
= info
.start
;
149 sparse
.size
= info
.size
;
151 sparse
.write
= fb_mmc_sparse_write
;
153 printf("Flashing sparse image at offset " LBAFU
"\n",
156 store_sparse_image(&sparse
, &sparse_priv
, session_id
,
159 write_raw_image(dev_desc
, &info
, cmd
, download_buffer
,
163 fastboot_okay(response_str
, "");
166 void fb_mmc_erase(const char *cmd
, char *response
)
169 struct blk_desc
*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
);
175 error("invalid mmc device");
176 fastboot_fail(response_str
, "invalid mmc device");
180 /* initialize the response buffer */
181 response_str
= response
;
183 dev_desc
= blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV
);
184 if (!dev_desc
|| dev_desc
->type
== DEV_TYPE_UNKNOWN
) {
185 error("invalid mmc device");
186 fastboot_fail(response_str
, "invalid mmc device");
190 ret
= part_get_info_efi_by_name_or_alias(dev_desc
, cmd
, &info
);
192 error("cannot find partition: '%s'", cmd
);
193 fastboot_fail(response_str
, "cannot find partition");
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
)) &
206 printf("Erasing blocks " LBAFU
" to " LBAFU
" due to alignment\n",
207 blks_start
, blks_start
+ blks_size
);
209 blks
= dev_desc
->block_erase(dev_desc
, blks_start
, blks_size
);
210 if (blks
!= blks_size
) {
211 error("failed erasing from device %d", dev_desc
->devnum
);
212 fastboot_fail(response_str
, "failed erasing from device");
216 printf("........ erased " LBAFU
" bytes from '%s'\n",
217 blks_size
* info
.blksz
, cmd
);
218 fastboot_okay(response_str
, "");