2 * Copyright 2014 Broadcom Corporation.
4 * SPDX-License-Identifier: GPL-2.0+
12 #include <image-sparse.h>
17 #ifndef CONFIG_FASTBOOT_GPT_NAME
18 #define CONFIG_FASTBOOT_GPT_NAME GPT_ENTRY_NAME
21 struct fb_mmc_sparse
{
22 struct blk_desc
*dev_desc
;
25 static int part_get_info_efi_by_name_or_alias(struct blk_desc
*dev_desc
,
26 const char *name
, disk_partition_t
*info
)
30 ret
= part_get_info_efi_by_name(dev_desc
, name
, info
);
32 /* strlen("fastboot_partition_alias_") + 32(part_name) + 1 */
33 char env_alias_name
[25 + 32 + 1];
34 char *aliased_part_name
;
37 strcpy(env_alias_name
, "fastboot_partition_alias_");
38 strncat(env_alias_name
, name
, 32);
39 aliased_part_name
= getenv(env_alias_name
);
40 if (aliased_part_name
!= NULL
)
41 ret
= part_get_info_efi_by_name(dev_desc
,
42 aliased_part_name
, info
);
47 static lbaint_t
fb_mmc_sparse_write(struct sparse_storage
*info
,
48 lbaint_t blk
, lbaint_t blkcnt
, const void *buffer
)
50 struct fb_mmc_sparse
*sparse
= info
->priv
;
51 struct blk_desc
*dev_desc
= sparse
->dev_desc
;
53 return blk_dwrite(dev_desc
, blk
, blkcnt
, buffer
);
56 static lbaint_t
fb_mmc_sparse_reserve(struct sparse_storage
*info
,
57 lbaint_t blk
, lbaint_t blkcnt
)
62 static void write_raw_image(struct blk_desc
*dev_desc
, disk_partition_t
*info
,
63 const char *part_name
, void *buffer
,
64 unsigned int download_bytes
)
69 /* determine number of blocks to write */
70 blkcnt
= ((download_bytes
+ (info
->blksz
- 1)) & ~(info
->blksz
- 1));
71 blkcnt
= lldiv(blkcnt
, info
->blksz
);
73 if (blkcnt
> info
->size
) {
74 error("too large for partition: '%s'\n", part_name
);
75 fastboot_fail("too large for partition");
79 puts("Flashing Raw Image\n");
81 blks
= blk_dwrite(dev_desc
, info
->start
, blkcnt
, buffer
);
83 error("failed writing to device %d\n", dev_desc
->devnum
);
84 fastboot_fail("failed writing to device");
88 printf("........ wrote " LBAFU
" bytes to '%s'\n", blkcnt
* info
->blksz
,
93 void fb_mmc_flash_write(const char *cmd
, void *download_buffer
,
94 unsigned int download_bytes
)
96 struct blk_desc
*dev_desc
;
97 disk_partition_t info
;
99 dev_desc
= blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV
);
100 if (!dev_desc
|| dev_desc
->type
== DEV_TYPE_UNKNOWN
) {
101 error("invalid mmc device\n");
102 fastboot_fail("invalid mmc device");
106 if (strcmp(cmd
, CONFIG_FASTBOOT_GPT_NAME
) == 0) {
107 printf("%s: updating MBR, Primary and Backup GPT(s)\n",
109 if (is_valid_gpt_buf(dev_desc
, download_buffer
)) {
110 printf("%s: invalid GPT - refusing to write to flash\n",
112 fastboot_fail("invalid GPT partition");
115 if (write_mbr_and_gpt_partitions(dev_desc
, download_buffer
)) {
116 printf("%s: writing GPT partitions failed\n", __func__
);
118 "writing GPT partitions failed");
121 printf("........ success\n");
124 } else if (part_get_info_efi_by_name_or_alias(dev_desc
, cmd
, &info
)) {
125 error("cannot find partition: '%s'\n", cmd
);
126 fastboot_fail("cannot find partition");
130 if (is_sparse_image(download_buffer
)) {
131 struct fb_mmc_sparse sparse_priv
;
132 struct sparse_storage sparse
;
134 sparse_priv
.dev_desc
= dev_desc
;
136 sparse
.blksz
= info
.blksz
;
137 sparse
.start
= info
.start
;
138 sparse
.size
= info
.size
;
139 sparse
.write
= fb_mmc_sparse_write
;
140 sparse
.reserve
= fb_mmc_sparse_reserve
;
142 printf("Flashing sparse image at offset " LBAFU
"\n",
145 sparse
.priv
= &sparse_priv
;
146 write_sparse_image(&sparse
, cmd
, download_buffer
,
149 write_raw_image(dev_desc
, &info
, cmd
, download_buffer
,
154 void fb_mmc_erase(const char *cmd
)
157 struct blk_desc
*dev_desc
;
158 disk_partition_t info
;
159 lbaint_t blks
, blks_start
, blks_size
, grp_size
;
160 struct mmc
*mmc
= find_mmc_device(CONFIG_FASTBOOT_FLASH_MMC_DEV
);
163 error("invalid mmc device");
164 fastboot_fail("invalid mmc device");
168 dev_desc
= blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV
);
169 if (!dev_desc
|| dev_desc
->type
== DEV_TYPE_UNKNOWN
) {
170 error("invalid mmc device");
171 fastboot_fail("invalid mmc device");
175 ret
= part_get_info_efi_by_name_or_alias(dev_desc
, cmd
, &info
);
177 error("cannot find partition: '%s'", cmd
);
178 fastboot_fail("cannot find partition");
182 /* Align blocks to erase group size to avoid erasing other partitions */
183 grp_size
= mmc
->erase_grp_size
;
184 blks_start
= (info
.start
+ grp_size
- 1) & ~(grp_size
- 1);
185 if (info
.size
>= grp_size
)
186 blks_size
= (info
.size
- (blks_start
- info
.start
)) &
191 printf("Erasing blocks " LBAFU
" to " LBAFU
" due to alignment\n",
192 blks_start
, blks_start
+ blks_size
);
194 blks
= blk_derase(dev_desc
, blks_start
, blks_size
);
195 if (blks
!= blks_size
) {
196 error("failed erasing from device %d", dev_desc
->devnum
);
197 fastboot_fail("failed erasing from device");
201 printf("........ erased " LBAFU
" bytes from '%s'\n",
202 blks_size
* info
.blksz
, cmd
);