Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
---
commands/Kconfig | 6 ++++++
commands/Makefile | 1 +
commands/seed.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 51 insertions(+)
create mode 100644 commands/seed.c
diff --git a/commands/Kconfig b/commands/Kconfig
index 21d921268..c983b62d0 100644
--- a/commands/Kconfig
+++ b/commands/Kconfig
@@ -2115,6 +2115,12 @@ config CMD_SPD_DECODE
help
decode spd eeprom
+config CMD_SEED
+ tristate
+ prompt "seed"
+ help
+ Seed the pseudo random number generator (PRNG)
+
# end Miscellaneous commands
endmenu
diff --git a/commands/Makefile b/commands/Makefile
index 601f15fc3..ab5902156 100644
--- a/commands/Makefile
+++ b/commands/Makefile
@@ -120,3 +120,4 @@ obj-$(CONFIG_CMD_DHRYSTONE) += dhrystone.o
obj-$(CONFIG_CMD_SPD_DECODE) += spd_decode.o
obj-$(CONFIG_CMD_MMC_EXTCSD) += mmc_extcsd.o
obj-$(CONFIG_CMD_NAND_BITFLIP) += nand-bitflip.o
+obj-$(CONFIG_CMD_SEED) += seed.o
diff --git a/commands/seed.c b/commands/seed.c
new file mode 100644
index 000000000..e378cd763
--- /dev/null
+++ b/commands/seed.c
@@ -0,0 +1,44 @@
+/*
+ * (c) 2017 Oleksij Rempel <kernel@xxxxxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <stdlib.h>
+#include <linux/ctype.h>
+
+static int do_seed(int argc, char *argv[])
+{
+ if (argc < 2)
+ return COMMAND_ERROR_USAGE;
+
+ if (isdigit(*argv[1])) {
+ srand(simple_strtoul(argv[1], NULL, 0));
+ return 0;
+ }
+
+ printf("numerical parameter expected\n");
+ return 1;
+}
+
+BAREBOX_CMD_HELP_START(seed)
+BAREBOX_CMD_HELP_TEXT("Seed the pseudo random number generator")
+BAREBOX_CMD_HELP_END
+
+BAREBOX_CMD_START(seed)
+ .cmd = do_seed,
+ BAREBOX_CMD_DESC("seed the PRNG")
+ BAREBOX_CMD_OPTS("VALUE")
+ BAREBOX_CMD_GROUP(CMD_GRP_MISC)
+ BAREBOX_CMD_HELP(cmd_seed_help)
+BAREBOX_CMD_END
--
2.11.0
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