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- # xilinx spartan6
- # http://www.xilinx.com/support/documentation/user_guides/ug380.pdf
-
- if { [info exists CHIPNAME] } {
- set _CHIPNAME $CHIPNAME
- } else {
- set _CHIPNAME xc6s
- }
-
- # the 4 top bits (28:31) are the die stepping. ignore it.
- jtag newtap $_CHIPNAME tap -irlen 6 -ignore-version \
- -expected-id 0x04000093 \
- -expected-id 0x04001093 \
- -expected-id 0x04002093 \
- -expected-id 0x04004093 \
- -expected-id 0x04024093 \
- -expected-id 0x04008093 \
- -expected-id 0x04028093 \
- -expected-id 0x0400E093 \
- -expected-id 0x0402E093 \
- -expected-id 0x04011093 \
- -expected-id 0x04031093 \
- -expected-id 0x0401D093 \
- -expected-id 0x0403D093
-
- pld device virtex2 $_CHIPNAME.tap
-
- set XC6S_CFG_IN 0x05
- set XC6S_JSHUTDOWN 0x0d
- set XC6S_JPROGRAM 0x0b
- set XC6S_JSTART 0x0c
- set XC6S_BYPASS 0x3f
-
- proc xc6s_program {tap} {
- global XC6S_JSHUTDOWN XC6S_JPROGRAM XC6S_JSTART XC6S_BYPASS
- irscan $tap $XC6S_JSHUTDOWN
- irscan $tap $XC6S_JPROGRAM
- irscan $tap $XC6S_JSTART
- irscan $tap $XC6S_BYPASS
- }
-
- #xtp038 and xc3sprog approach
- proc xc6s_program_iprog {tap} {
- global XC6S_JSHUTDOWN XC6S_JSTART XC6S_BYPASS XC6S_CFG_IN
- irscan $tap $XC6S_JSHUTDOWN
- runtest 16
- irscan $tap $XC6S_CFG_IN
- # xtp038 IPROG 16bit flipped
- drscan $tap 16 0xffff 16 0x9955 16 0x66aa 16 0x850c 16 0x7000 16 0x0004
- irscan $tap $XC6S_JSTART
- runtest 32
- irscan $tap $XC6S_BYPASS
- runtest 1
- }
-
- set XC6S_ISC_ENABLE 0x10
- set XC6S_ISC_DISABLE 0x16
- set XC6S_ISC_DNA 0x30
-
- # Get the "Device DNA" from the Spartan 6.
- # Most Xilinx FPGA devices contain an embedded, unique device identifier called
- # the "Device DNA". The identifier is nonvolatile, permanently programmed into
- # the FPGA, and is unchangeable providing a great serial / tracking number.
- proc xc6s_get_dna {tap} {
- global XC6S_ISC_ENABLE XC6S_ISC_DISABLE XC6S_ISC_DNA
- irscan $tap $XC6S_ISC_ENABLE
- runtest 64
- irscan $tap $XC6S_ISC_DNA
- # Device DNA is 57 bits long, but we can only read 32bits at a time
- # with OpenOCD.
- set dna [drscan $tap 16 0 16 0 16 0 9 0]
- runtest 64
- irscan $tap $XC6S_ISC_DISABLE
- runtest 64
-
- # Convert the binary data into the order impact uses
- scan $dna "%x %x %x %x" v1 v2 v3 v4
- set bin_dna [string reverse [concat [format "%09b" $v4][format "%016b" $v3][format "%016b" $v2][format "%016b" $v1]]]
-
- # Return a hex version of binary
- scan [format "0b%s" $bin_dna] "%i" hex_dna
- return $hex_dna
- }
-
- # Print out the "Device DNA" in the same format that impact uses.
- proc xc6s_print_dna {tap} {
- set hex_dna [xc6s_get_dna $tap]
-
- puts [format "DNA = %57b (0x%x)\n" $hex_dna $hex_dna]
- }
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