[U-Boot] [PATCH] ARM: zynq: Check zynq aes & rsa command parameters count

[Michal Simek]

From: T Karthik Reddy <t.karthik.reddy at xilinx.com>

This patch checks for zynq aes & rsa commands max parameters count. Also
checks minimum number of parameters count for aes command.

Signed-off-by: T Karthik Reddy <t.karthik.reddy at xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu at xilinx.com>
Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---

 board/xilinx/zynq/cmds.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/board/xilinx/zynq/cmds.c b/board/xilinx/zynq/cmds.c
index 8b48ea3a03ab..27d44b760daf 100644
--- a/board/xilinx/zynq/cmds.c
+++ b/board/xilinx/zynq/cmds.c
@@ -414,9 +414,13 @@ static int do_zynq_rsa(cmd_tbl_t *cmdtp, int flag, int argc,
 	u32 src_ptr;
 	char *endp;
 
+	if (argc != cmdtp->maxargs)
+		return CMD_RET_FAILURE;
+
 	src_ptr = simple_strtoul(argv[2], &endp, 16);
 	if (*argv[2] == 0 || *endp != 0)
 		return CMD_RET_USAGE;
+
 	if (zynq_verify_image(src_ptr))
 		return CMD_RET_FAILURE;
 
@@ -432,6 +436,9 @@ static int zynq_decrypt_image(cmd_tbl_t *cmdtp, int flag, int argc,
 	u32 srcaddr, srclen, dstaddr, dstlen;
 	int status;
 
+	if (argc < 5 && argc > cmdtp->maxargs)
+		return CMD_RET_USAGE;
+
 	srcaddr = simple_strtoul(argv[2], &endp, 16);
 	if (*argv[2] == 0 || *endp != 0)
 		return CMD_RET_USAGE;
@@ -485,7 +492,7 @@ static int do_zynq(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 		return CMD_RET_USAGE;
 	zynq_cmd = find_cmd_tbl(argv[1], zynq_commands,
 				ARRAY_SIZE(zynq_commands));
-	if (!zynq_cmd || argc != zynq_cmd->maxargs)
+	if (!zynq_cmd)
 		return CMD_RET_USAGE;
 
 	ret = zynq_cmd->cmd(zynq_cmd, flag, argc, argv);
-- 
1.9.1