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cmd: fat: add offset parameter to fatwrite

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In this patch, fatwrite command is extended so as to accept an additional
parameter of file offset.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
AKASHI Takahiro 2018-09-11 15:59:07 +09:00 committed by Alexander Graf
parent cb8af8af5b
commit cda40b2aea
1 changed files with 6 additions and 3 deletions
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9
cmd/fat.c
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@ -104,6 +104,7 @@ static int do_fat_fswrite(cmd_tbl_t *cmdtp, int flag,
int ret;
unsigned long addr;
unsigned long count;
long offset;
struct blk_desc *dev_desc = NULL;
disk_partition_t info;
int dev = 0;
@ -126,9 +127,11 @@ static int do_fat_fswrite(cmd_tbl_t *cmdtp, int flag,
}
addr = simple_strtoul(argv[3], NULL, 16);
count = (argc <= 5) ? 0 : simple_strtoul(argv[5], NULL, 16);
/* offset should be a hex, but "-1" is allowed */
offset = (argc <= 6) ? 0 : simple_strtol(argv[6], NULL, 16);
buf = map_sysmem(addr, count);
ret = file_fat_write(argv[4], buf, 0, count, &size);
ret = file_fat_write(argv[4], buf, offset, count, &size);
unmap_sysmem(buf);
if (ret < 0) {
printf("\n** Unable to write \"%s\" from %s %d:%d **\n",
@ -142,9 +145,9 @@ static int do_fat_fswrite(cmd_tbl_t *cmdtp, int flag,
}
U_BOOT_CMD(
fatwrite, 6, 0, do_fat_fswrite,
fatwrite, 7, 0, do_fat_fswrite,
"write file into a dos filesystem",
"<interface> <dev[:part]> <addr> <filename> [<bytes>]\n"
"<interface> <dev[:part]> <addr> <filename> [<bytes> [<offset>]]\n"
" - write file 'filename' from the address 'addr' in RAM\n"
" to 'dev' on 'interface'"
);