brcm47xx: fix error when build firmware on x86_64 host (closes #7672)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25472 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/tools/firmware-utils/src/trx2edips.c b/tools/firmware-utils/src/trx2edips.c
index 9606bd8..378be27 100644 (file)
--- a/tools/firmware-utils/src/trx2edips.c
+++ b/tools/firmware-utils/src/trx2edips.c
@@ -23,8 +23,8 @@ struct trx_header {
 
 
 
-#define EDIMAX_PS16    0x36315350
-#define EDIMAX_HDR_LEN 0xc
+#define EDIMAX_PS16    0x36315350      /* "PS16" */
+#define EDIMAX_HDR_LEN         0xc
 
 
 /**********************************************************************/
@@ -94,9 +94,9 @@ int main(int argc, char *argv[])
        FILE *fpIn = NULL;
        FILE *fpOut = NULL;
        long  nImgSize;
-       uint32_t sign = EDIMAX_PS16;    /* signature for header */
-       uint32_t start_addr = 0x80500000; /* start address but doesn't seems to be used... */
-       uint32_t length; /* length of data, not used too ...*/
+       uint32_t sign = EDIMAX_PS16;            /* signature for header */
+       uint32_t start_addr = 0x80500000;       /* start address but doesn't seems to be used... */
+       uint32_t length;                        /* length of data, not used too ...*/
        size_t res;
 
        char *buf;
@@ -113,16 +113,18 @@ int main(int argc, char *argv[])
                fprintf(stderr, "Unable to open %s\n", argv[1]);
                return EXIT_FAILURE;
        }
+       /* compute the length of the file */
        fseek(fpIn, 0, SEEK_END);
        length = ftell(fpIn);
-
+       /* alloc enough memory to store the file */
        buf = (char *)malloc(length);
        if (!buf) {
                fprintf(stderr, "malloc of buffers failed\n");
                return EXIT_FAILURE;
        }
-
+       
        rewind(fpIn);
+       /* read the whole file*/
        res = fread(buf, 1, length, fpIn);
 
        p = (struct trx_header *)buf;
@@ -140,11 +142,12 @@ int main(int argc, char *argv[])
        }
        /* make the 3 partition beeing 12 bytes closer from the header */
        memcpy(buf + p->offsets[2] - EDIMAX_HDR_LEN, buf + p->offsets[2], length - p->offsets[2]);
+       /* recompute the crc32 check */
        p->crc32 = crc32buf((char *) &p->flag_version, length - offsetof(struct trx_header, flag_version));
-
-       fwrite(&sign,  sizeof(long), 1, fpOut);
-       fwrite(&length, sizeof(long), 1, fpOut);
-       fwrite(&start_addr, sizeof(long), 1, fpOut);
+       /* write the modified file */
+       fwrite(&sign,  sizeof(uint32_t), 1, fpOut);
+       fwrite(&length, sizeof(uint32_t), 1, fpOut);
+       fwrite(&start_addr, sizeof(uint32_t), 1, fpOut);
        fwrite(buf, sizeof(char), length, fpOut);
        fclose(fpOut);
 }