include/usb_dfu_trailer.h

   1 #ifndef _USB_DFU_TRAILER_H
   2 #define _USB_DFU_TRAILER_H
   3
   4 /* trailer handling for DFU files */
   5
   6 #define UBOOT_DFU_TRAILER_V1    1
   7 #define UBOOT_DFU_TRAILER_MAGIC 0x19731978
   8 struct uboot_dfu_trailer {
   9         u_int32_t       magic;
  10         u_int16_t       version;
  11         u_int16_t       length;
  12         u_int16_t       vendor;
  13         u_int16_t       product;
  14         u_int32_t       revision;
  15 } __attribute__((packed));
  16
  17 /* we mirror the trailer because we want it to be longer in later versions
  18  * while keeping backwards compatibility */
  19 static inline void dfu_trailer_mirror(struct uboot_dfu_trailer *trailer,
  20                                       unsigned char *eof)
  21 {
  22         int i;
  23         int len = sizeof(struct uboot_dfu_trailer);
  24         unsigned char *src = eof - len;
  25         unsigned char *dst = (unsigned char *) trailer;
  26
  27         for (i = 0; i < len; i++)
  28                 dst[len-1-i] = src[i];
  29 }
  30
  31 #endif /* _USB_DFU_TRAILER_H */