shared/tools/makeconfig.sh

   1 #!/bin/sh
   2
   3 # This is the main configuration file. It just happens to be a Bash
   4 # shell script that generates the instruction tag memory
   5 # initialization files as well as config.h
   6
   7 source $1
   8
   9 # Cachable range
  10 CACHEABLE_BITS=32
  11
  12 printf 'I$: %3d KiB (%d word lines)\n' $((1 << ($IC_LINE_INDEX_BITS + $IC_WORD_INDEX_BITS + 4 - 10))) $((1 << $IC_WORD_INDEX_BITS))
  13 printf 'D$: %3d KiB (%d word lines)\n' $((1 << ($DC_LINE_INDEX_BITS + $DC_WORD_INDEX_BITS + 4 - 10))) $((1 << $DC_WORD_INDEX_BITS))
  14
  15 # Instruction cache (4-way associtative tag-sequential 8 KiB)
  16 IC_SET_INDEX_BITS=2     # Caches has four sets
  17 IC_LINE_INDEX_BITS=$IC_LINE_INDEX_BITS    # Each set has 128 lines
  18 IC_WORD_INDEX_BITS=$IC_WORD_INDEX_BITS    # Each line has 4 32-bit words (128 bits)
  19
  20 # Data cache (4-way associtative tag-sequential 16 KiB)
  21 DC_SET_INDEX_BITS=2     # Caches has four sets
  22 DC_LINE_INDEX_BITS=$DC_LINE_INDEX_BITS    # Each set has 256 lines
  23 DC_WORD_INDEX_BITS=$DC_WORD_INDEX_BITS    # Each line has 4 32-bit words (128 bits)
  24
  25 cat<<EOF  > config.h
  26 // Don't edit this! Edit config.sh
  27 // This configuration file was autogenerated by config.sh on `date`
  28
  29 // Cachable range
  30 parameter CACHEABLE_BITS=$CACHEABLE_BITS;
  31
  32 // Instruction cache (4-way associtative tag-sequential 8 KiB)
  33 parameter IC_SET_INDEX_BITS=$IC_SET_INDEX_BITS;     // Caches has four sets
  34 parameter IC_LINE_INDEX_BITS=$IC_LINE_INDEX_BITS;    // Each set has 128 lines
  35 parameter IC_WORD_INDEX_BITS=$IC_WORD_INDEX_BITS;    // Each line has 4 32-bit words (128 bits)
  36
  37 // Data cache (4-way associtative tag-sequential 16 KiB)
  38 parameter DC_SET_INDEX_BITS=$DC_SET_INDEX_BITS;     // Caches has four sets
  39 parameter DC_LINE_INDEX_BITS=$DC_LINE_INDEX_BITS;    // Each set has 256 lines
  40 parameter DC_WORD_INDEX_BITS=$DC_WORD_INDEX_BITS;    // Each line has 4 32-bit words (128 bits)
  41 EOF
  42
  43 gen_tag() {
  44   name=$1
  45   size=$2
  46   val=$3
  47   width=$4
  48   depth=$5
  49
  50   echo gen_tag $name $size $val $width $depth
  51
  52   cat<<EOF  > $name.mif
  53 -- Memory Initialization File (.mif) for tag$set
  54
  55
  56 WIDTH=$width;
  57 DEPTH=$depth;
  58
  59 ADDRESS_RADIX=HEX;
  60 DATA_RADIX=HEX;
  61
  62 CONTENT BEGIN
  63 EOF
  64
  65    rm -f $name.data
  66    csi=0
  67    while [ $csi -lt $size ]; do
  68       printf "\t%08x : %x;\n" $csi $val >> $name.mif
  69       printf "%x\n" $val >> $name.data
  70       csi=$((csi + 1))
  71    done
  72    echo "END;" >> $name.mif
  73 }
  74
  75 IC_SET_BITS=$((IC_LINE_INDEX_BITS + IC_WORD_INDEX_BITS + 2))
  76 IC_TAG_BITS=$((CACHEABLE_BITS - IC_SET_BITS))
  77
  78 # Now generate tagX.mif
  79 for set in 0 1 2 3; do
  80   size=$((1 << IC_LINE_INDEX_BITS))
  81   name=icache_tag$set
  82   val=$(((0xBFC00000 >> IC_SET_BITS) + set))
  83   gen_tag $name $size $val $IC_TAG_BITS $((1 << IC_LINE_INDEX_BITS))
  84 done
  85
  86 DC_SET_BITS=$((IC_LINE_INDEX_BITS + IC_WORD_INDEX_BITS + 2))
  87 DC_TAG_BITS=$((CACHEABLE_BITS - DC_SET_BITS))
  88
  89 # Now generate tagX.mif
  90 for set in 0 1 2 3; do
  91   size=$((1 << DC_LINE_INDEX_BITS))
  92   name=dcache_tag$set
  93   val=$(((0xFFFFFFFF >> DC_SET_BITS) - set))
  94   gen_tag $name $size $val $DC_TAG_BITS $((1 << DC_LINE_INDEX_BITS))
  95 done
  96