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Commit 61fc1954 authored by Andres Morales's avatar Andres Morales
Browse files

mkbootimg: make mkbootimg print image cksum to stdout 

used by the build system as a fingerprint for the image

Change-Id: Ifaf230b881e68d921a8158ed2e8a3ee41f27a4b3
parent f85f1116

mkbootimg/mkbootimg.c

+54 −34
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ 
#include <unistd.h>

#include <fcntl.h>

#include <errno.h>

#include <stdbool.h>



#include "mincrypt/sha.h"

#include "bootimg.h"
@@ -65,6 +66,7 @@ int usage(void) 
            "       [ --board <boardname> ]\n"

            "       [ --base <address> ]\n"

            "       [ --pagesize <pagesize> ]\n"

            "       [ --id ]\n"

            "       -o|--output <filename>\n"

            );

    return 1;
@@ -74,6 +76,14 @@ int usage(void) 


static unsigned char padding[16384] = { 0, };



static void print_id(const uint8_t *id, size_t id_len) {

    printf("0x");

    for (unsigned i = 0; i < id_len; i++) {

        printf("%02x", id[i]);

    }

    printf("\n");

}



int write_padding(int fd, unsigned pagesize, unsigned itemsize)

{

    unsigned pagemask = pagesize - 1;
@@ -121,12 +131,15 @@ int main(int argc, char **argv) 


    memset(&hdr, 0, sizeof(hdr));



    bool get_id = false;

    while(argc > 0){

        char *arg = argv[0];

        if (!strcmp(arg, "--id")) {

            get_id = true;

            argc -= 1;

            argv += 1;

        } else if(argc >= 2) {

            char *val = argv[1];

        if(argc < 2) {

            return usage();

        }

            argc -= 2;

            argv += 2;

            if(!strcmp(arg, "--output") || !strcmp(arg, "-o")) {
@@ -161,6 +174,9 @@ int main(int argc, char **argv) 
            } else {

                return usage();

            }

        } else {

            return usage();

        }

    }

    hdr.page_size = pagesize;
@@ -266,6 +282,10 @@ int main(int argc, char **argv) 
        if(write_padding(fd, pagesize, hdr.second_size)) goto fail;

    }



    if (get_id) {

        print_id(sha, sizeof(hdr.id));

    }



    return 0;



fail: