Mirrors/u-boot
1
0
Fork 0
mirror of https://source.denx.de/u-boot/u-boot.git synced 2026-06-02 09:46:37 +03:00
Code Issues Packages Projects Releases Wiki Activity

fs: exfat: Add U-Boot porting layer

Browse Source 
Add U-Boot adjustments to the libexfat code and integrate
the result into U-Boot filesystem layer. This provides full
read-write exfat support for U-Boot available via generic
filesystem interface.

FS_DIRENT_NAME_LEN is increased to 1024 in case exfat is
enabled, because EXFAT can use UTF16 names, which do not
fit into current FS_DIRENT_NAME_LEN. To avoid affecting
every configuration, increase FS_DIRENT_NAME_LEN only in
case EXFAT is enabled.

Example usage via sandbox, assuming disk.img with one exfat partition:

Drive info:
$ ./u-boot -Tc 'host bind 0 ../disk.img ; host info 0'
dev       blocks  blksz label           path
  0       262144    512 0               ../disk.img

List files:
$ ./u-boot -Tc 'host bind 0 ../disk.img ; ls host 0:1 /api'
      475   Kconfig
      230   Makefile
     1873   README
     ...
10 file(s), 0 dir(s)

Load and checksum a file:
$ ./u-boot -Tc 'host bind 0 ../disk.img ; load host 0:1 $loadaddr .config ; \
                crc32 $loadaddr $filesize'
56724 bytes read in 1 ms (54.1 MiB/s)
crc32 for 00000000 ... 0000dd93 ==> b2e847c9

$ crc32 .config
b2e847c9

Load .config file to RAM, store the file into FS as /newconfig,
load the /newconfig into RAM and checksum the file:
$ ./u-boot -Tc 'host bind 0 ../disk.img ; load host 0:1 $loadaddr .config ; \
		save host 0:1 $loadaddr /newconfig $filesize ; \
		load host 0:1 0x10000 /newconfig ; \
		crc32 0x10000 $filesize'
56724 bytes read in 1 ms (54.1 MiB/s)
56724 bytes written in 0 ms
56724 bytes read in 0 ms
crc32 for 00010000 ... 0001dd93 ==> b2e847c9

Remove file 3.txt and create new directory /newdir:
$ ./u-boot -Tc 'host bind 0 ../disk.img ; ls host 0:1 / ; \
                rm host 0:1 3.txt ; mkdir host 0:1 /newdir ; \
		ls host 0:1 /'
...
        0   1.txt
        0   2.txt
        0   3.txt
        0   4.txt
        0   5.txt

7 file(s), 4 dir(s)
...
        0   1.txt
        0   2.txt
            newdir/
        0   4.txt
        0   5.txt

6 file(s), 5 dir(s)

Acked-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Marek Vasut
2025-03-17 04:12:46 +01:00
committed by Tom Rini
parent 88c1acd357
commit b86a651b64
15 changed files with 607 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
include/fs.h
View File

@@ -18,6 +18,7 @@ struct cmd_tbl;
#define FS_TYPE_SQUASHFS 6
#define FS_TYPE_EROFS 7
#define FS_TYPE_SEMIHOSTING 8
#define FS_TYPE_EXFAT 9
struct blk_desc;
@@ -173,7 +174,7 @@ int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
#define FS_DT_REG 8 /* regular file */
#define FS_DT_LNK 10 /* symbolic link */
#define FS_DIRENT_NAME_LEN 256
#define FS_DIRENT_NAME_LEN CONFIG_IS_ENABLED(FS_EXFAT, (1024), (256))
/**
* struct fs_dirent - directory entry