sim/cocotb/c4m_jtag_svfgrammar.py

   1 from modgrammar import *
   2
   3 grammar_whitespace_mode = 'explicit'
   4 grammar_whitespace = WS_NOEOL
   5
   6 class SVFEol(Grammar):
   7     grammar = (OPTIONAL(SPACE), EOL)
   8     grammar_collapse = True
   9
  10 class SemicolonEol(Grammar):
  11     grammar = (OPTIONAL(SPACE), L(";"), SVFEol)
  12     grammar_collapse = True
  13
  14 class Integer(Grammar):
  15     grammar = WORD("0-9")
  16     grammar_collapse = True
  17
  18 class Float(Grammar):
  19     grammar = (Integer, (L("."), OPTIONAL(Integer)), OPTIONAL(L("E"), Integer))
  20
  21 class Hexadecimal(Grammar):
  22     grammar = (L("("), WORD("0-9A-F"), L(")"))
  23     grammar_collapse = True
  24
  25 class StableState(Grammar):
  26     grammar = (L("IRPAUSE") | L("DRPAUSE") | L("RESET") | L("IDLE"))
  27     grammar_collapse = True
  28
  29
  30 class ScanSpec(Grammar):
  31     """The specification of Scan In/Scan out data"""
  32     grammar = (SPACE, Integer, SPACE,
  33                OPTIONAL(L("TDI"), OPTIONAL(SPACE), Hexadecimal),
  34                OPTIONAL(OPTIONAL(SPACE), L("TDO"), OPTIONAL(SPACE), Hexadecimal),
  35                OPTIONAL(OPTIONAL(SPACE), L("MASK"), OPTIONAL(SPACE), Hexadecimal),
  36                OPTIONAL(OPTIONAL(SPACE), L("SMASK"), OPTIONAL(SPACE), Hexadecimal)
  37               )
  38     grammar_collapse = True
  39
  40
  41 class EmptyLine(Grammar):
  42     grammar = SVFEol
  43
  44 class Comment(Grammar):
  45     grammar = (L("!"), REST_OF_LINE, SVFEol)
  46
  47 class EndDR(Grammar):
  48     grammar = (L("ENDDR"), SPACE, StableState, SemicolonEol)
  49
  50 class EndIR(Grammar):
  51     grammar = (L("ENDIR"), SPACE, StableState, SemicolonEol)
  52
  53 class Frequency(Grammar):
  54     grammar = (L("FREQUENCY"), OPTIONAL(SPACE, Float, OPTIONAL(SPACE), L("HZ")), OPTIONAL(SPACE), SemicolonEol)
  55
  56 class HDR(Grammar):
  57     grammar = (L("HDR"), ScanSpec, SemicolonEol)
  58
  59 class HIR(Grammar):
  60     grammar = (L("HIR"), ScanSpec, SemicolonEol)
  61
  62 #TODO: PIO, PIOMAP
  63
  64 class Runtest(Grammar):
  65     grammar = (
  66         L("RUNTEST"),
  67         OPTIONAL(SPACE, StableState),
  68         OPTIONAL(SPACE, Integer, OPTIONAL(SPACE), (L("TCK") | L("SCK"))),
  69         OPTIONAL(SPACE, Float, OPTIONAL(SPACE), L("SEC")),
  70         OPTIONAL(SPACE, L("MAXIMUM"), SPACE, Float, OPTIONAL(SPACE), L("SEC")),
  71         OPTIONAL(SPACE, L("ENDSTATE"), SPACE, StableState),
  72         SemicolonEol
  73     )
  74
  75 class SDR(Grammar):
  76     grammar = (L("SDR"), ScanSpec, SemicolonEol)
  77
  78 class SIR(Grammar):
  79     grammar = (L("SIR"), ScanSpec, SemicolonEol)
  80
  81 class State(Grammar):
  82     # TODO: Path to reach state
  83     grammar = (L("STATE"), SPACE, StableState, SemicolonEol)
  84
  85 class TDR(Grammar):
  86     grammar = (L("TDR"), ScanSpec, SemicolonEol)
  87
  88 class TIR(Grammar):
  89     grammar = (L("TIR"), ScanSpec, SemicolonEol)
  90
  91 class Trst(Grammar):
  92     grammar = (L("TRST"), SPACE, (L("ON") | L("OFF") | L("Z") | L("ABSENT")), SemicolonEol)
  93
  94
  95 class SVFFile(Grammar):
  96     grammar = ONE_OR_MORE(EmptyLine | Comment | Trst | EndDR | EndIR | SIR | SDR | Runtest | State)