sbtools: refactor and cleanup

Factor common elf/sb read/write/printf routines. Factor sb zero
key, move sb version guess.

Change-Id: I5ae1885587456736e782e623610281bbee545039

1 files changed, 1 insertions, 0 deletions

diff --git a/utils/imxtools/sbtools/sbloader.c b/utils/imxtools/sbtools/sbloader.c
index 91c01785f9..1a241ba551 100644
--- a/utils/imxtools/sbtools/sbloader.c
+++ b/utils/imxtools/sbtools/sbloader.c
@@ -445,6 +445,7 @@ int main(int argc, char **argv)
                 }
                 break;
             default:
+                printf("Internal error: unknown option '%c'\n", c);
                 abort();
         }
     }