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- # SPDX-License-Identifier: GPL-2.0-or-later
- set _ENDIAN big
- if { [info exists CHIPNAME] } {
- set _CHIPNAME $CHIPNAME
- } else {
- set _CHIPNAME or1k
- }
- if { [info exists TAP_TYPE] } {
- set _TAP_TYPE $TAP_TYPE
- } else {
- puts "You need to select a tap type"
- shutdown
- }
- # Configure the target
- if { [string compare $_TAP_TYPE "VJTAG"] == 0 } {
- if { [info exists FPGATAPID] } {
- set _FPGATAPID $FPGATAPID
- } else {
- puts "You need to set your FPGA JTAG ID"
- shutdown
- }
- jtag newtap $_CHIPNAME cpu -irlen 10 -expected-id $_FPGATAPID
- set _TARGETNAME $_CHIPNAME.cpu
- target create $_TARGETNAME or1k -endian $_ENDIAN -chain-position $_TARGETNAME
- # Select the TAP core we are using
- tap_select vjtag
- } elseif { [string compare $_TAP_TYPE "XILINX_BSCAN"] == 0 } {
- if { [info exists FPGATAPID] } {
- set _FPGATAPID $FPGATAPID
- } else {
- puts "You need to set your FPGA JTAG ID"
- shutdown
- }
- jtag newtap $_CHIPNAME cpu -irlen 6 -expected-id $_FPGATAPID
- set _TARGETNAME $_CHIPNAME.cpu
- target create $_TARGETNAME or1k -endian $_ENDIAN -chain-position $_TARGETNAME
- # Select the TAP core we are using
- tap_select xilinx_bscan
- } else {
- # OpenCores Mohor JTAG TAP ID
- set _CPUTAPID 0x14951185
- jtag newtap $_CHIPNAME cpu -irlen 4 -expected-id $_CPUTAPID
- set _TARGETNAME $_CHIPNAME.cpu
- target create $_TARGETNAME or1k -endian $_ENDIAN -chain-position $_TARGETNAME
- # Select the TAP core we are using
- tap_select mohor
- }
- # Select the debug unit core we are using. This debug unit as an option.
- set ADBG_USE_HISPEED 1
- set ENABLE_JSP_SERVER 2
- set ENABLE_JSP_MULTI 4
- # If ADBG_USE_HISPEED is set (options bit 1), status bits will be skipped
- # on burst reads and writes to improve download speeds.
- # This option must match the RTL configured option.
- du_select adv [expr {$ADBG_USE_HISPEED | $ENABLE_JSP_SERVER | $ENABLE_JSP_MULTI}]
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