2 * Copyright 2014 Broadcom Corporation.
4 * SPDX-License-Identifier: GPL-2.0+
12 #include <image-sparse.h>
14 #include <sparse_format.h>
18 #ifndef CONFIG_FASTBOOT_GPT_NAME
19 #define CONFIG_FASTBOOT_GPT_NAME GPT_ENTRY_NAME
22 static char *response_str
;
24 struct fb_mmc_sparse
{
25 struct blk_desc
*dev_desc
;
28 static int get_partition_info_efi_by_name_or_alias(struct blk_desc
*dev_desc
,
29 const char *name
, disk_partition_t
*info
)
33 ret
= get_partition_info_efi_by_name(dev_desc
, name
, info
);
35 /* strlen("fastboot_partition_alias_") + 32(part_name) + 1 */
36 char env_alias_name
[25 + 32 + 1];
37 char *aliased_part_name
;
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
);
51 static int fb_mmc_sparse_write(struct sparse_storage
*storage
,
57 struct fb_mmc_sparse
*sparse
= priv
;
58 struct blk_desc
*dev_desc
= sparse
->dev_desc
;
61 ret
= dev_desc
->block_write(dev_desc
, offset
, size
, data
);
68 static void write_raw_image(struct blk_desc
*dev_desc
, disk_partition_t
*info
,
69 const char *part_name
, void *buffer
,
70 unsigned int download_bytes
)
75 /* determine number of blocks to write */
76 blkcnt
= ((download_bytes
+ (info
->blksz
- 1)) & ~(info
->blksz
- 1));
77 blkcnt
= lldiv(blkcnt
, info
->blksz
);
79 if (blkcnt
> info
->size
) {
80 error("too large for partition: '%s'\n", part_name
);
81 fastboot_fail(response_str
, "too large for partition");
85 puts("Flashing Raw Image\n");
87 blks
= dev_desc
->block_write(dev_desc
, info
->start
, blkcnt
, buffer
);
89 error("failed writing to device %d\n", dev_desc
->dev
);
90 fastboot_fail(response_str
, "failed writing to device");
94 printf("........ wrote " LBAFU
" bytes to '%s'\n", blkcnt
* info
->blksz
,
96 fastboot_okay(response_str
, "");
99 void fb_mmc_flash_write(const char *cmd
, unsigned int session_id
,
100 void *download_buffer
, unsigned int download_bytes
,
103 struct blk_desc
*dev_desc
;
104 disk_partition_t info
;
106 /* initialize the response buffer */
107 response_str
= response
;
109 dev_desc
= blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV
);
110 if (!dev_desc
|| dev_desc
->type
== DEV_TYPE_UNKNOWN
) {
111 error("invalid mmc device\n");
112 fastboot_fail(response_str
, "invalid mmc device");
116 if (strcmp(cmd
, CONFIG_FASTBOOT_GPT_NAME
) == 0) {
117 printf("%s: updating MBR, Primary and Backup GPT(s)\n",
119 if (is_valid_gpt_buf(dev_desc
, download_buffer
)) {
120 printf("%s: invalid GPT - refusing to write to flash\n",
122 fastboot_fail(response_str
, "invalid GPT partition");
125 if (write_mbr_and_gpt_partitions(dev_desc
, download_buffer
)) {
126 printf("%s: writing GPT partitions failed\n", __func__
);
127 fastboot_fail(response_str
,
128 "writing GPT partitions failed");
131 printf("........ success\n");
132 fastboot_okay(response_str
, "");
134 } else if (get_partition_info_efi_by_name_or_alias(dev_desc
, cmd
, &info
)) {
135 error("cannot find partition: '%s'\n", cmd
);
136 fastboot_fail(response_str
, "cannot find partition");
140 if (is_sparse_image(download_buffer
)) {
141 struct fb_mmc_sparse sparse_priv
;
142 sparse_storage_t sparse
;
144 sparse_priv
.dev_desc
= dev_desc
;
146 sparse
.block_sz
= info
.blksz
;
147 sparse
.start
= info
.start
;
148 sparse
.size
= info
.size
;
150 sparse
.write
= fb_mmc_sparse_write
;
152 printf("Flashing sparse image at offset " LBAFU
"\n",
155 store_sparse_image(&sparse
, &sparse_priv
, session_id
,
158 write_raw_image(dev_desc
, &info
, cmd
, download_buffer
,
162 fastboot_okay(response_str
, "");
165 void fb_mmc_erase(const char *cmd
, char *response
)
168 struct blk_desc
*dev_desc
;
169 disk_partition_t info
;
170 lbaint_t blks
, blks_start
, blks_size
, grp_size
;
171 struct mmc
*mmc
= find_mmc_device(CONFIG_FASTBOOT_FLASH_MMC_DEV
);
174 error("invalid mmc device");
175 fastboot_fail(response_str
, "invalid mmc device");
179 /* initialize the response buffer */
180 response_str
= response
;
182 dev_desc
= blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV
);
183 if (!dev_desc
|| dev_desc
->type
== DEV_TYPE_UNKNOWN
) {
184 error("invalid mmc device");
185 fastboot_fail(response_str
, "invalid mmc device");
189 ret
= get_partition_info_efi_by_name_or_alias(dev_desc
, cmd
, &info
);
191 error("cannot find partition: '%s'", cmd
);
192 fastboot_fail(response_str
, "cannot find partition");
196 /* Align blocks to erase group size to avoid erasing other partitions */
197 grp_size
= mmc
->erase_grp_size
;
198 blks_start
= (info
.start
+ grp_size
- 1) & ~(grp_size
- 1);
199 if (info
.size
>= grp_size
)
200 blks_size
= (info
.size
- (blks_start
- info
.start
)) &
205 printf("Erasing blocks " LBAFU
" to " LBAFU
" due to alignment\n",
206 blks_start
, blks_start
+ blks_size
);
208 blks
= dev_desc
->block_erase(dev_desc
, blks_start
, blks_size
);
209 if (blks
!= blks_size
) {
210 error("failed erasing from device %d", dev_desc
->dev
);
211 fastboot_fail(response_str
, "failed erasing from device");
215 printf("........ erased " LBAFU
" bytes from '%s'\n",
216 blks_size
* info
.blksz
, cmd
);
217 fastboot_okay(response_str
, "");