block/HMAC:
  description: HMAC (Hash-based Message Authentication Code) Accelerator.
  items:
  - name: SET_START
    description: Process control register 0.
    byte_offset: 64
    fieldset: SET_START
  - name: SET_PARA_PURPOSE
    description: Configure purpose.
    byte_offset: 68
    fieldset: SET_PARA_PURPOSE
  - name: SET_PARA_KEY
    description: Configure key.
    byte_offset: 72
    fieldset: SET_PARA_KEY
  - name: SET_PARA_FINISH
    description: Finish initial configuration.
    byte_offset: 76
    fieldset: SET_PARA_FINISH
  - name: SET_MESSAGE_ONE
    description: Process control register 1.
    byte_offset: 80
    fieldset: SET_MESSAGE_ONE
  - name: SET_MESSAGE_ING
    description: Process control register 2.
    byte_offset: 84
    fieldset: SET_MESSAGE_ING
  - name: SET_MESSAGE_END
    description: Process control register 3.
    byte_offset: 88
    fieldset: SET_MESSAGE_END
  - name: SET_RESULT_FINISH
    description: Process control register 4.
    byte_offset: 92
    fieldset: SET_RESULT_FINISH
  - name: SET_INVALIDATE_JTAG
    description: Invalidate register 0.
    byte_offset: 96
    fieldset: SET_INVALIDATE_JTAG
  - name: SET_INVALIDATE_DS
    description: Invalidate register 1.
    byte_offset: 100
    fieldset: SET_INVALIDATE_DS
  - name: QUERY_ERROR
    description: Error register.
    byte_offset: 104
    fieldset: QUERY_ERROR
  - name: QUERY_BUSY
    description: Busy register.
    byte_offset: 108
    fieldset: QUERY_BUSY
  - name: WR_MESSAGE_MEM
    description: Message block memory.
    array:
      len: 16
      stride: 4
    byte_offset: 128
  - name: RD_RESULT_MEM
    description: Result from upstream.
    array:
      len: 8
      stride: 4
    byte_offset: 192
  - name: SET_MESSAGE_PAD
    description: Process control register 5.
    byte_offset: 240
    fieldset: SET_MESSAGE_PAD
  - name: ONE_BLOCK
    description: Process control register 6.
    byte_offset: 244
    fieldset: ONE_BLOCK
  - name: SOFT_JTAG_CTRL
    description: Jtag register 0.
    byte_offset: 248
    fieldset: SOFT_JTAG_CTRL
  - name: WR_JTAG
    description: Jtag register 1.
    byte_offset: 252
    fieldset: WR_JTAG
fieldset/ONE_BLOCK:
  description: Process control register 6.
  fields:
  - name: SET_ONE_BLOCK
    description: Don't have to do padding.
    bit_offset: 0
    bit_size: 1
fieldset/QUERY_BUSY:
  description: Busy register.
  fields:
  - name: BUSY_STATE
    description: 'Hmac state. 1''b0: idle. 1''b1: busy.'
    bit_offset: 0
    bit_size: 1
fieldset/QUERY_ERROR:
  description: Error register.
  fields:
  - name: QUERY_CHECK
    description: 'Hmac configuration state. 0: key are agree with purpose. 1: error.'
    bit_offset: 0
    bit_size: 1
fieldset/SET_INVALIDATE_DS:
  description: Invalidate register 1.
  fields:
  - name: SET_INVALIDATE_DS
    description: Clear result from hmac downstream DS.
    bit_offset: 0
    bit_size: 1
fieldset/SET_INVALIDATE_JTAG:
  description: Invalidate register 0.
  fields:
  - name: SET_INVALIDATE_JTAG
    description: Clear result from hmac downstream JTAG.
    bit_offset: 0
    bit_size: 1
fieldset/SET_MESSAGE_END:
  description: Process control register 3.
  fields:
  - name: SET_TEXT_END
    description: Start hardware padding.
    bit_offset: 0
    bit_size: 1
fieldset/SET_MESSAGE_ING:
  description: Process control register 2.
  fields:
  - name: SET_TEXT_ING
    description: Continue typical hmac.
    bit_offset: 0
    bit_size: 1
fieldset/SET_MESSAGE_ONE:
  description: Process control register 1.
  fields:
  - name: SET_TEXT_ONE
    description: Call SHA to calculate one message block.
    bit_offset: 0
    bit_size: 1
fieldset/SET_MESSAGE_PAD:
  description: Process control register 5.
  fields:
  - name: SET_TEXT_PAD
    description: Start software padding.
    bit_offset: 0
    bit_size: 1
fieldset/SET_PARA_FINISH:
  description: Finish initial configuration.
  fields:
  - name: SET_PARA_END
    description: Finish hmac configuration.
    bit_offset: 0
    bit_size: 1
fieldset/SET_PARA_KEY:
  description: Configure key.
  fields:
  - name: KEY_SET
    description: Set hmac parameter key.
    bit_offset: 0
    bit_size: 3
fieldset/SET_PARA_PURPOSE:
  description: Configure purpose.
  fields:
  - name: PURPOSE_SET
    description: Set hmac parameter purpose.
    bit_offset: 0
    bit_size: 4
fieldset/SET_RESULT_FINISH:
  description: Process control register 4.
  fields:
  - name: SET_RESULT_END
    description: After read result from upstream, then let hmac back to idle.
    bit_offset: 0
    bit_size: 1
fieldset/SET_START:
  description: Process control register 0.
  fields:
  - name: SET_START
    description: Start hmac operation.
    bit_offset: 0
    bit_size: 1
fieldset/SOFT_JTAG_CTRL:
  description: Jtag register 0.
  fields:
  - name: SOFT_JTAG_CTRL
    description: Turn on JTAG verification.
    bit_offset: 0
    bit_size: 1
fieldset/WR_JTAG:
  description: Jtag register 1.
  fields:
  - name: WR_JTAG
    description: 32-bit of key to be compared.
    bit_offset: 0
    bit_size: 32