A) Interconnects

A.1) Vgmn

• functionality : a generic VCI compliant micro-network
• Arguments:
  • instance name
  • min_latency (one-way)
  • fifo_size
• Example:

  my_vgmn = arch.create('caba:vci_vgmn', "my_vgmn", min_latency = 10, fifo_size = 8)
  

• Defined ports:
  • to_initiator.new() and to_target.new(): local ports, allocated on demand

A.2) LocalCrossbar

• functionality : a VCI compliant crossbar interconnect
• Arguments:
  • instance name
• Example:

  my_lc = arch.create('caba:vci_local_crossbar', "lc0")
  

• Defined ports:
  • to_initiator.new() and to_target.new(): local ports, allocated on demand

B) VCI Initiators

B.1) Xcache

• functionality: a direct mapping cache controler (separated instruction & data cache)
• Arguments:
  • instance name
  • dcache_lines : number of lines in data cache
  • dcache_words : number of words per line in data cache
  • icache_lines : number of lines in instruction cache
  • icache_words : number of words per line in instruction cache
• Example:

  my_cache = arch.create('caba:vci_vgmn', "my_cache",
                     dcache_lines = 32,
                     dcache_words = 8,
                     icache_lines = 32,
                     icache_words = 8 )
  

• Defined ports:
  • dcache: to the CPU
  • icache: to the CPU
  • vci: to the VCI micro-network

C) Processors

C.1) Mips

This component is special as it is in fact a wrapped ISS.

• Functionality : a MIPS R3000 micro-processor
• Arguments:
  • name
  • ident: cpu id
• Example:

  my_proc = arch.create('caba:iss_wrapper', "my_proc", iss_t = 'common:mipsel', ident = 0 )
  

• Defined ports:
  • dcache: to the cache's dcache port
  • icache: to the cache's icache port
  • irq[n]: interrupt line (0 <= n < 6)

D) VCI Targets

D.1) MultiRam

• !Mandatory arguments:
  • name
• Example:

  my_ram = arch.create('caba:vci_ram', "my_ram")
  

• Defined ports:
  • vci: to the micro-network
• Adding a segment:
  • Arguments: name, base address, size, cacheability

    my_ram.addSegment( 'boot', 0xbfc00000, 0x100, true )
    

D.2) MultiTty

• functionality: a TTY controler
• Mandatory arguments:
  • instance name
  • a list of names
• Example:

  my_tty = arch.create('caba:vci_multi_tty', "my_tty_controler", ["TTY0", "TTY1", "TT2"])
  

• Defined ports:
  • vci: to the micro-network
  • irq[n]: interrupt line (0 <= n < nb of ttys)