Add rng list command to list all probed RNG device.
Signed-off-by: Weizhao Ouyang o451686892@gmail.com --- cmd/rng.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/cmd/rng.c b/cmd/rng.c index 52f722c7af..4818133f94 100644 --- a/cmd/rng.c +++ b/cmd/rng.c @@ -18,6 +18,19 @@ static int do_rng(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) int devnum; struct udevice *dev; int ret = CMD_RET_SUCCESS; + int idx; + + if (argc == 2 && !strcmp(argv[1], "list")) { + uclass_foreach_dev_probe(UCLASS_RNG, dev) { + printf("RNG #%d - %s\n", dev->seq_, dev->name); + } + + if (!idx) { + printf("*** no RNG devices available ***\n"); + return CMD_RET_FAILURE; + } + return CMD_RET_SUCCESS; + }
switch (argc) { case 1: @@ -57,6 +70,8 @@ static int do_rng(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) }
U_BOOT_LONGHELP(rng, + "[list]\n" + " - list all the probe rng device\n" "[dev [n]]\n" " - print n random bytes(max 64) read from dev\n");