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| author | Donggeun Kim <dg77.kim@samsung.com> | 2011-10-24 21:15:28 +0000 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2011-10-26 21:40:44 +0200 |
| commit | c30a15e590c7e5bfd27e4704c81648071f11d51f (patch) | |
| tree | 3dfb06047dccb50fbf1555ff48a5396ea5317488 /fs/fat/fat.c | |
| parent | eea63e05d0b7f54e7aa39725015483972c71cb3c (diff) | |
| download | u-boot-imx-c30a15e590c7e5bfd27e4704c81648071f11d51f.zip u-boot-imx-c30a15e590c7e5bfd27e4704c81648071f11d51f.tar.gz u-boot-imx-c30a15e590c7e5bfd27e4704c81648071f11d51f.tar.bz2 | |
FAT: Add FAT write feature
In some cases, saving data in RAM as a file with FAT format is required.
This patch allows the file to be written in FAT formatted partition.
The usage is similar with reading a file.
First, fat_register_device function is called before file_fat_write function
in order to set target partition.
Then, file_fat_write function is invoked with desired file name,
start ram address for writing data, and file size.
Signed-off-by: Donggeun Kim <dg77.kim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Diffstat (limited to 'fs/fat/fat.c')
| -rw-r--r-- | fs/fat/fat.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/fat/fat.c b/fs/fat/fat.c index 756ac64..7cf173c 100644 --- a/fs/fat/fat.c +++ b/fs/fat/fat.c @@ -46,6 +46,7 @@ static void downcase (char *str) static block_dev_desc_t *cur_dev = NULL; static unsigned long part_offset = 0; +static unsigned long part_size; static int cur_part = 1; @@ -99,6 +100,7 @@ int fat_register_device (block_dev_desc_t * dev_desc, int part_no) if (!get_partition_info(dev_desc, part_no, &info)) { part_offset = info.start; cur_part = part_no; + part_size = info.size; } else if ((strncmp((char *)&buffer[DOS_FS_TYPE_OFFSET], "FAT", 3) == 0) || (strncmp((char *)&buffer[DOS_FS32_TYPE_OFFSET], "FAT32", 5) == 0)) { /* ok, we assume we are on a PBR only */ |