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   1 # xilinx spartan6
   2 # http://www.xilinx.com/support/documentation/user_guides/ug380.pdf
   3
   4 if { [info exists CHIPNAME] } {
   5         set _CHIPNAME $CHIPNAME
   6 } else {
   7         set _CHIPNAME xc6s
   8 }
   9
  10 # the 4 top bits (28:31) are the die stepping. ignore it.
  11 jtag newtap $_CHIPNAME tap -irlen 6 -ignore-version \
  12         -expected-id 0x04000093 \
  13         -expected-id 0x04001093 \
  14         -expected-id 0x04002093 \
  15         -expected-id 0x04004093 \
  16         -expected-id 0x04024093 \
  17         -expected-id 0x04008093 \
  18         -expected-id 0x04028093 \
  19         -expected-id 0x0400E093 \
  20         -expected-id 0x0402E093 \
  21         -expected-id 0x04011093 \
  22         -expected-id 0x04031093 \
  23         -expected-id 0x0401D093 \
  24         -expected-id 0x0403D093
  25
  26 pld device virtex2 $_CHIPNAME.tap
  27
  28 set XC6S_CFG_IN 0x05
  29 set XC6S_JSHUTDOWN 0x0d
  30 set XC6S_JPROGRAM 0x0b
  31 set XC6S_JSTART 0x0c
  32 set XC6S_BYPASS 0x3f
  33
  34 proc xc6s_program {tap} {
  35         global XC6S_JSHUTDOWN XC6S_JPROGRAM XC6S_JSTART XC6S_BYPASS
  36         irscan $tap $XC6S_JSHUTDOWN
  37         irscan $tap $XC6S_JPROGRAM
  38         irscan $tap $XC6S_JSTART
  39         irscan $tap $XC6S_BYPASS
  40 }
  41
  42 #xtp038 and xc3sprog approach
  43 proc xc6s_program_iprog {tap} {
  44         global XC6S_JSHUTDOWN XC6S_JSTART XC6S_BYPASS XC6S_CFG_IN
  45         irscan $tap $XC6S_JSHUTDOWN
  46         runtest 16
  47         irscan $tap $XC6S_CFG_IN
  48         # xtp038 IPROG 16bit flipped
  49         drscan $tap 16 0xffff 16 0x9955 16 0x66aa 16 0x850c 16 0x7000 16 0x0004
  50         irscan $tap $XC6S_JSTART
  51         runtest 32
  52         irscan $tap $XC6S_BYPASS
  53         runtest 1
  54 }