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 --- cmd/fat.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/cmd/fat.c b/cmd/fat.c index 03de5d11af..2a5f7bfc26 100644 --- a/cmd/fat.c +++ b/cmd/fat.c @@ -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'" );