2 * Copyright 2014 Broadcom Corporation.
4 * SPDX-License-Identifier: GPL-2.0+
12 #include <image-sparse.h>
18 * FIXME: Ensure we always set these names via Kconfig once xxx_PARTITION is
21 #ifndef CONFIG_FASTBOOT_GPT_NAME
22 #define CONFIG_FASTBOOT_GPT_NAME "gpt"
26 #ifndef CONFIG_FASTBOOT_MBR_NAME
27 #define CONFIG_FASTBOOT_MBR_NAME "mbr"
30 struct fb_mmc_sparse
{
31 struct blk_desc
*dev_desc
;
34 static int part_get_info_by_name_or_alias(struct blk_desc
*dev_desc
,
35 const char *name
, disk_partition_t
*info
)
39 ret
= part_get_info_by_name(dev_desc
, name
, info
);
41 /* strlen("fastboot_partition_alias_") + 32(part_name) + 1 */
42 char env_alias_name
[25 + 32 + 1];
43 char *aliased_part_name
;
46 strcpy(env_alias_name
, "fastboot_partition_alias_");
47 strncat(env_alias_name
, name
, 32);
48 aliased_part_name
= getenv(env_alias_name
);
49 if (aliased_part_name
!= NULL
)
50 ret
= part_get_info_by_name(dev_desc
,
51 aliased_part_name
, info
);
56 static lbaint_t
fb_mmc_sparse_write(struct sparse_storage
*info
,
57 lbaint_t blk
, lbaint_t blkcnt
, const void *buffer
)
59 struct fb_mmc_sparse
*sparse
= info
->priv
;
60 struct blk_desc
*dev_desc
= sparse
->dev_desc
;
62 return blk_dwrite(dev_desc
, blk
, blkcnt
, buffer
);
65 static lbaint_t
fb_mmc_sparse_reserve(struct sparse_storage
*info
,
66 lbaint_t blk
, lbaint_t blkcnt
)
71 static void write_raw_image(struct blk_desc
*dev_desc
, disk_partition_t
*info
,
72 const char *part_name
, void *buffer
,
73 unsigned int download_bytes
)
78 /* determine number of blocks to write */
79 blkcnt
= ((download_bytes
+ (info
->blksz
- 1)) & ~(info
->blksz
- 1));
80 blkcnt
= lldiv(blkcnt
, info
->blksz
);
82 if (blkcnt
> info
->size
) {
83 error("too large for partition: '%s'\n", part_name
);
84 fastboot_fail("too large for partition");
88 puts("Flashing Raw Image\n");
90 blks
= blk_dwrite(dev_desc
, info
->start
, blkcnt
, buffer
);
92 error("failed writing to device %d\n", dev_desc
->devnum
);
93 fastboot_fail("failed writing to device");
97 printf("........ wrote " LBAFU
" bytes to '%s'\n", blkcnt
* info
->blksz
,
102 void fb_mmc_flash_write(const char *cmd
, void *download_buffer
,
103 unsigned int download_bytes
)
105 struct blk_desc
*dev_desc
;
106 disk_partition_t info
;
108 dev_desc
= blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV
);
109 if (!dev_desc
|| dev_desc
->type
== DEV_TYPE_UNKNOWN
) {
110 error("invalid mmc device\n");
111 fastboot_fail("invalid mmc device");
115 #ifdef CONFIG_EFI_PARTITION
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("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("writing GPT partitions failed");
130 printf("........ success\n");
136 #ifdef CONFIG_DOS_PARTITION
137 if (strcmp(cmd
, CONFIG_FASTBOOT_MBR_NAME
) == 0) {
138 printf("%s: updating MBR\n", __func__
);
139 if (is_valid_dos_buf(download_buffer
)) {
140 printf("%s: invalid MBR - refusing to write to flash\n",
142 fastboot_fail("invalid MBR partition");
145 if (write_mbr_partition(dev_desc
, download_buffer
)) {
146 printf("%s: writing MBR partition failed\n", __func__
);
147 fastboot_fail("writing MBR partition failed");
150 printf("........ success\n");
156 if (part_get_info_by_name_or_alias(dev_desc
, cmd
, &info
)) {
157 error("cannot find partition: '%s'\n", cmd
);
158 fastboot_fail("cannot find partition");
162 if (is_sparse_image(download_buffer
)) {
163 struct fb_mmc_sparse sparse_priv
;
164 struct sparse_storage sparse
;
166 sparse_priv
.dev_desc
= dev_desc
;
168 sparse
.blksz
= info
.blksz
;
169 sparse
.start
= info
.start
;
170 sparse
.size
= info
.size
;
171 sparse
.write
= fb_mmc_sparse_write
;
172 sparse
.reserve
= fb_mmc_sparse_reserve
;
174 printf("Flashing sparse image at offset " LBAFU
"\n",
177 sparse
.priv
= &sparse_priv
;
178 write_sparse_image(&sparse
, cmd
, download_buffer
,
181 write_raw_image(dev_desc
, &info
, cmd
, download_buffer
,
186 void fb_mmc_erase(const char *cmd
)
189 struct blk_desc
*dev_desc
;
190 disk_partition_t info
;
191 lbaint_t blks
, blks_start
, blks_size
, grp_size
;
192 struct mmc
*mmc
= find_mmc_device(CONFIG_FASTBOOT_FLASH_MMC_DEV
);
195 error("invalid mmc device");
196 fastboot_fail("invalid mmc device");
200 dev_desc
= blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV
);
201 if (!dev_desc
|| dev_desc
->type
== DEV_TYPE_UNKNOWN
) {
202 error("invalid mmc device");
203 fastboot_fail("invalid mmc device");
207 ret
= part_get_info_by_name_or_alias(dev_desc
, cmd
, &info
);
209 error("cannot find partition: '%s'", cmd
);
210 fastboot_fail("cannot find partition");
214 /* Align blocks to erase group size to avoid erasing other partitions */
215 grp_size
= mmc
->erase_grp_size
;
216 blks_start
= (info
.start
+ grp_size
- 1) & ~(grp_size
- 1);
217 if (info
.size
>= grp_size
)
218 blks_size
= (info
.size
- (blks_start
- info
.start
)) &
223 printf("Erasing blocks " LBAFU
" to " LBAFU
" due to alignment\n",
224 blks_start
, blks_start
+ blks_size
);
226 blks
= blk_derase(dev_desc
, blks_start
, blks_size
);
227 if (blks
!= blks_size
) {
228 error("failed erasing from device %d", dev_desc
->devnum
);
229 fastboot_fail("failed erasing from device");
233 printf("........ erased " LBAFU
" bytes from '%s'\n",
234 blks_size
* info
.blksz
, cmd
);