2 * Copyright 2014 Broadcom Corporation.
3 * Copyright 2015 Free Electrons.
5 * SPDX-License-Identifier: GPL-2.0+
12 #include <image-sparse.h>
14 #include <linux/mtd/mtd.h>
15 #include <jffs2/jffs2.h>
18 struct fb_nand_sparse
{
20 struct part_info
*part
;
23 __weak
int board_fastboot_erase_partition_setup(char *name
)
28 __weak
int board_fastboot_write_partition_setup(char *name
)
33 static int fb_nand_lookup(const char *partname
,
34 struct mtd_info
**mtd
,
35 struct part_info
**part
)
37 struct mtd_device
*dev
;
41 ret
= mtdparts_init();
43 error("Cannot initialize MTD partitions\n");
44 fastboot_fail("cannot init mtdparts");
48 ret
= find_dev_and_part(partname
, &dev
, &pnum
, part
);
50 error("cannot find partition: '%s'", partname
);
51 fastboot_fail("cannot find partition");
55 if (dev
->id
->type
!= MTD_DEV_TYPE_NAND
) {
56 error("partition '%s' is not stored on a NAND device",
58 fastboot_fail("not a NAND device");
62 *mtd
= get_nand_dev_by_index(dev
->id
->num
);
67 static int _fb_nand_erase(struct mtd_info
*mtd
, struct part_info
*part
)
69 nand_erase_options_t opts
;
72 memset(&opts
, 0, sizeof(opts
));
73 opts
.offset
= part
->offset
;
74 opts
.length
= part
->size
;
77 printf("Erasing blocks 0x%llx to 0x%llx\n",
78 part
->offset
, part
->offset
+ part
->size
);
80 ret
= nand_erase_opts(mtd
, &opts
);
84 printf("........ erased 0x%llx bytes from '%s'\n",
85 part
->size
, part
->name
);
90 static int _fb_nand_write(struct mtd_info
*mtd
, struct part_info
*part
,
91 void *buffer
, unsigned int offset
,
92 unsigned int length
, size_t *written
)
94 int flags
= WITH_WR_VERIFY
;
96 #ifdef CONFIG_FASTBOOT_FLASH_NAND_TRIMFFS
97 flags
|= WITH_DROP_FFS
;
100 return nand_write_skip_bad(mtd
, offset
, &length
, written
,
101 part
->size
- (offset
- part
->offset
),
105 static lbaint_t
fb_nand_sparse_write(struct sparse_storage
*info
,
106 lbaint_t blk
, lbaint_t blkcnt
, const void *buffer
)
108 struct fb_nand_sparse
*sparse
= info
->priv
;
112 ret
= _fb_nand_write(sparse
->mtd
, sparse
->part
, (void *)buffer
,
114 blkcnt
* info
->blksz
, &written
);
116 printf("Failed to write sparse chunk\n");
120 /* TODO - verify that the value "written" includes the "bad-blocks" ... */
123 * the return value must be 'blkcnt' ("good-blocks") plus the
124 * number of "bad-blocks" encountered within this space...
126 return written
/ info
->blksz
;
129 static lbaint_t
fb_nand_sparse_reserve(struct sparse_storage
*info
,
130 lbaint_t blk
, lbaint_t blkcnt
)
135 * TODO - implement a function to determine the total number
136 * of blocks which must be used in order to reserve the specified
137 * number ("blkcnt") of "good-blocks", starting at "blk"...
138 * ( possibly something like the "check_skip_len()" function )
142 * the return value must be 'blkcnt' ("good-blocks") plus the
143 * number of "bad-blocks" encountered within this space...
145 return blkcnt
+ bad_blocks
;
148 void fb_nand_flash_write(const char *cmd
, void *download_buffer
,
149 unsigned int download_bytes
)
151 struct part_info
*part
;
152 struct mtd_info
*mtd
= NULL
;
155 ret
= fb_nand_lookup(cmd
, &mtd
, &part
);
157 error("invalid NAND device");
158 fastboot_fail("invalid NAND device");
162 ret
= board_fastboot_write_partition_setup(part
->name
);
166 if (is_sparse_image(download_buffer
)) {
167 struct fb_nand_sparse sparse_priv
;
168 struct sparse_storage sparse
;
170 sparse_priv
.mtd
= mtd
;
171 sparse_priv
.part
= part
;
173 sparse
.blksz
= mtd
->writesize
;
174 sparse
.start
= part
->offset
/ sparse
.blksz
;
175 sparse
.size
= part
->size
/ sparse
.blksz
;
176 sparse
.write
= fb_nand_sparse_write
;
177 sparse
.reserve
= fb_nand_sparse_reserve
;
179 printf("Flashing sparse image at offset " LBAFU
"\n",
182 sparse
.priv
= &sparse_priv
;
183 write_sparse_image(&sparse
, cmd
, download_buffer
,
186 printf("Flashing raw image at offset 0x%llx\n",
189 ret
= _fb_nand_write(mtd
, part
, download_buffer
, part
->offset
,
190 download_bytes
, NULL
);
192 printf("........ wrote %u bytes to '%s'\n",
193 download_bytes
, part
->name
);
197 fastboot_fail("error writing the image");
204 void fb_nand_erase(const char *cmd
)
206 struct part_info
*part
;
207 struct mtd_info
*mtd
= NULL
;
210 ret
= fb_nand_lookup(cmd
, &mtd
, &part
);
212 error("invalid NAND device");
213 fastboot_fail("invalid NAND device");
217 ret
= board_fastboot_erase_partition_setup(part
->name
);
221 ret
= _fb_nand_erase(mtd
, part
);
223 error("failed erasing from device %s", mtd
->name
);
224 fastboot_fail("failed erasing from device");