swicwe.ksy

meta:
  id: swicwe
  file-extension: bin

types:
  swicwe_foto_toc:
    seq:
      - id: toc
        size: 0x20
        #type: swicwe_foto_toc_element
        repeat: eos

  swicwe_header:
    -webide-representation: 'image_type:{image_type}, prod_type:{prod_type}, size:{image_sz:dec}'
    seq:
      - id: prod_buf
        size: 0x100
      - id: psb_crc
        type: u4be
      - id: hdr_rev
        type: u4be
      - id: crc_ind 
        type: str
        encoding: ASCII
        size: 4
      - id: image_type
        type: str
        encoding: ASCII
        size: 4
      - id: prod_type
        type: str
        encoding: ASCII
        size: 4
      - id: image_sz
        type: u4be
      - id: image_crc
        type: u4be
      - id: version
        type: str
        encoding: ASCII
        size: 84
      - id: rel_date
        type: str
        encoding: ASCII
        size: 8
      - id: compat
        type: u4be
      - id: misc_opts
        type: u1
      - id: reserved1
        type: u1
      - id: reserved2
        type: u1
      - id: reserved3
        type: u1
      - id: stor_addr
        type: u4be
      - id: prog_addr
        type: u4be
      - id: entry_pt
        type: u4be
      - id: signature
        type: u4be
  
  swicwe:
    seq:
      - id: header
        type: swicwe_header
      - id: body
        size: header.image_sz
        type:
          switch-on: header.image_type
          cases:
            '"SPKG"': swicwe_array
            '"FOTO"': swicwe_array
            '"BOOT"': swicwe_array
            '"MODM"': swicwe_array
            '"APPL"': swicwe_array
            '"FILE"': swicwe_array
            '"NVUP"': nv
            '"NVBF"': nv
            '"NVBO"': nv
            '"NVBU"': nv
            '"NVBC"': nv
            
            
  swicwe_array:
    seq:
      - id: array
        type: swicwe
        repeat: eos
        
  nv_numbered_item:
    seq:
      - id: num
        type: u2le
      - id: length
        type: u4le
      - id: value
        size: length      
  
  nv_named_item:
    seq:
      - id: name_magic
        contents: [0x01, 0x00]
      - id: name_length
        type: u4le
      - id: unknown_flags
        type: u1
      - id: name
        size: name_length - 1 
        type: str
        encoding: ASCII
      - id: value_magic
        contents: [0x02, 0x00]
      - id: value_length
        type: u4le
      - id: value
        size: value_length
        
  nv_par_body:
    seq:
      - id: body_type
        type: u1
      - id: unknown_f1
        type: u1
      - id: unknown_f2
        type: u1
      - id: unknown_f3
        type: u1
      - id: content
        size-eos: true
        type:
          switch-on: body_type
          cases:
            0: nv_numbered_item
            1: nv_named_item
            2: nv_named_item
            3: nv_named_item
      
  
  nv_par:
    seq:
      - id: length
        type: u4le
      - id: body
        size: length - 4
        type: nv_par_body
  
  nv:
    seq:
      - id: unknown1
        type: u2le
      - id: pars_count
        type: u2le
      - id: unknown2
        type: u2le
      - id: unknown3
        type: u4le
      - id: pars
        type: nv_par
        if: pars_count != 0
        repeat: expr
        repeat-expr: pars_count
      - id: pars2
        type: nv_par
        if: pars_count == 0
        repeat: eos