tools: dumpimage: Show error message when trying to extract data from kwbimage

There is no code for extracting data from kwbimage, so show an error
message when user tries this via e.g. dumpimage call:
  ./tools/dumpimage -T kwbimage -o /tmp/out u-boot-spl.kwb

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>

diff --git a/tools/kwbimage.c b/tools/kwbimage.c
index 5410df63f5399239aec8b413f06a9ab2ada4acd3..9ecda861e4f828bb8c73d258c8ef4d559b03e16f 100644 (file)
--- a/tools/kwbimage.c
+++ b/tools/kwbimage.c
@@ -1867,6 +1867,11 @@ static int kwbimage_generate(struct image_tool_params *params,
  */
 static int kwbimage_check_params(struct image_tool_params *params)
 {
+       if (params->iflag) {
+               fprintf(stderr, "%s: kwbimage does not support extract operation\n", params->cmdname);
+               return CFG_INVALID;
+       }
+
        if (!params->imagename || !strlen(params->imagename)) {
                char *msg = "Configuration file for kwbimage creation omitted";