tools: kwbimage: Simplify add_secure_header_v1()

To make add_secure_header_v1() function more readable, call it directly
with arguments: header pointer with header size and data image pointer with
data image size. No functional change.

Signed-off-by: Pali Rohár <pali@kernel.org>

diff --git a/tools/kwbimage.c b/tools/kwbimage.c
index 5f62ed1..857af6a 100644 (file)
--- a/tools/kwbimage.c
+++ b/tools/kwbimage.c
@@ -1322,16 +1322,14 @@ static int kwb_sign_csk_with_kak(struct image_tool_params *params,
        return 0;
 }
 
-static int add_secure_header_v1(struct image_tool_params *params, uint8_t *ptr,
-                               int payloadsz, size_t headersz, uint8_t *image,
+static int add_secure_header_v1(struct image_tool_params *params, uint8_t *image_ptr,
+                               size_t image_size, uint8_t *header_ptr, size_t headersz,
                                struct secure_hdr_v1 *secure_hdr)
 {
        struct image_cfg_element *e_jtagdelay;
        struct image_cfg_element *e_boxid;
        struct image_cfg_element *e_flashid;
        RSA *csk = NULL;
-       unsigned char *image_ptr;
-       size_t image_size;
        struct sig_v1 tmp_sig;
        bool specialized_img = image_get_spezialized_img();
 
@@ -1357,14 +1355,11 @@ static int add_secure_header_v1(struct image_tool_params *params, uint8_t *ptr,
        if (kwb_sign_csk_with_kak(params, secure_hdr, csk))
                return 1;
 
-       image_ptr = ptr + headersz;
-       image_size = payloadsz - headersz;
-
        if (kwb_sign_and_verify(csk, image_ptr, image_size,
                                &secure_hdr->imgsig, "image") < 0)
                return 1;
 
-       if (kwb_sign_and_verify(csk, image, headersz, &tmp_sig, "header") < 0)
+       if (kwb_sign_and_verify(csk, header_ptr, headersz, &tmp_sig, "header") < 0)
                return 1;
 
        secure_hdr->hdrsig = tmp_sig;
@@ -1533,8 +1528,8 @@ static void *image_create_v1(size_t *imagesz, struct image_tool_params *params,
                                              &datai, delay);
        }
 
-       if (secure_hdr && add_secure_header_v1(params, ptr, payloadsz + headersz,
-                                              headersz, image, secure_hdr))
+       if (secure_hdr && add_secure_header_v1(params, ptr + headersz, payloadsz,
+                                              image, headersz, secure_hdr))
                return NULL;
 
        *imagesz = headersz;