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dffs_descriptor.h (2048B)

      1 /* 
      2  * This license is set out in https://raw.githubusercontent.com/Broadcom-Network-Switching-Software/OpenBCM/master/Legal/LICENSE file.
      3  * 
      4  * Copyright 2007-2020 Broadcom Inc. All rights reserved.
      5 */
      6 
      7 
      8 #ifndef __DFFS_DESCRIPTOR_H_INCLUDED__
      9 /* { */
     10 #define __DFFS_DESCRIPTOR_H_INCLUDED__
     11 
     12 #ifdef  __cplusplus
     13 extern "C" {
     14 #endif
     15 
     16 /*************
     17  * INCLUDES  *
     18  */
     19 /* { */
     20 
     21 /* } */
     22 
     23 /*************
     24  * DEFINES   *
     25  */
     26 /* { */
     27 /* max characters in a file name */
     28 #define DFFS_FILENAME_SIZE      25
     29 
     30 /* max characters in a date string */
     31 #define DFFS_DATE_STR_SIZE      9
     32 
     33 /* max characters in a file description comment string */
     34 #define DFFS_COMMENT_STR_SIZE   66
     35 
     36 /* a pattern used for dffs recognition*/
     37 #define DFFS_SIGNATURE_PATTERN  0xAFC33CFA
     38 
     39 /* maximal allowed number of files used in DFFS*/
     40 #define DFFS_MAX_FILES          20
     41 /* } */
     42 
     43 /*************
     44  *  MACROS   *
     45  */
     46 /* { */
     47 
     48 /* } */
     49 
     50 /*************
     51  * TYPE DEFS *
     52  */
     53 /* { */
     54   enum
     55   {
     56     DFFS_VER_01 = 0,
     57     DFFS_NOF_VERSIONS
     58   } dffs_versions_enum;
     59 
     60   /* DFFS File Descriptor structure */
     61   typedef struct
     62   {
     63     char name[DFFS_FILENAME_SIZE];
     64     char date[DFFS_DATE_STR_SIZE];
     65     unsigned char version;
     66     char comment[DFFS_COMMENT_STR_SIZE];
     67     unsigned long attr1;
     68     unsigned long attr2;
     69     unsigned long attr3;
     70     unsigned long member_sectors;
     71     unsigned long total_size;
     72   } __ATTRIBUTE_PACKED__ DFFS_FD_TYPE;
     73 
     74   /* DFFS descriptor header structure */
     75   typedef struct
     76   {
     77     unsigned long dffs_signature;
     78     unsigned char version;
     79   } __ATTRIBUTE_PACKED__ DFFS_HDR_TYPE;
     80 
     81   /* DFFS descriptor structure */
     82   typedef struct
     83   {
     84     DFFS_HDR_TYPE header;
     85     unsigned long busy_sectors;       /* occupied sectors bitmap */
     86     unsigned long sectors_available;
     87     DFFS_FD_TYPE  fd[DFFS_MAX_FILES];
     88     unsigned short crc16;
     89   } __ATTRIBUTE_PACKED__ DFFS_DESCRIPTOR_TYPE;
     90 
     91 /* } */
     92 
     93 /*************
     94  * GLOBALS   *
     95  */
     96 /* { */
     97 
     98 /* } */
     99 
    100 /*************
    101  * FUNCTIONS *
    102  */
    103 /* { */
    104 
    105 /* } */
    106 
    107 
    108 #ifdef  __cplusplus
    109 }
    110 #endif
    111 
    112 
    113 /* } __DFFS_DESCRIPTOR_H_INCLUDED__*/
    114 #endif