# ----------------------------------------------------------------------
# Project: JCPU, a portable 8-bit RISC CPU written in VHDL
# This file: The ROM file for upload to target over JTAG 
#
# Copyright (C) 2007 J. Ahrensfeld
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
# 
# For questions and ideas, please contact the author at jens@jayfield.org
#
# ---------------------------------------------------------------------

# ---------------------------------------------------------------------
# For Chipscope 9.1
# ---------------------------------------------------------------------
# Source JTAG/TCL frame work
cd $env(CHIPSCOPE)\\bin\\nt
source csejtag.tcl

namespace import ::chipscope::*

# Platform USB Cable
set PLATFORM_USB_CABLE_ARGS [list "port=USB2" "frequency=6000000"]
# frequency="24000000 | 12000000 | 6000000 | 3000000 | 1500000 | 750000"

# Create session
set handle [::chipscope::csejtag_session create 0]

# Open JTAG and lock
set open_result [::chipscope::csejtag_target open $handle $CSEJTAG_TARGET_PLATFORMUSB 0 $PLATFORM_USB_CABLE_ARGS]
set lock_result [::chipscope::csejtag_target lock $handle 1000]

set devlist [::chipscope::csejtag_tap autodetect_chain $handle $CSEJTAG_SCAN_DEFAULT]

# Get Device ID
set devtype "Virtex-4SX"
set devid 2
set irlength [::chipscope::csejtag_tap get_irlength $handle $devid]
set idcode [::chipscope::csejtag_tap get_device_idcode $handle $devid]

set CSE_OP $CSEJTAG_SHIFT_READWRITE
set CSE_ES $CSEJTAG_RUN_TEST_IDLE

# Write Program
# JASM_ROM_INSERT_HERE
# Assembled from reti_issue.jsm
# ---------------------------------------------------------------
# Shift the USER2 Instruction (b1111000010) into the Instruction Register of FPGA
# User 1
set result [::chipscope::csejtag_tap shift_device_ir $handle $devid $CSE_OP $CSE_ES 0 $irlength "3C2"]

# 0x000: JMP 0x002
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00030002"

# 0x001: RETI
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0013F000"

# 0x002: MOV R00, 0x05
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00203050"

# 0x003: COUT (0x03), R00
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00326030"

# 0x004: MOV R00, 0x00
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00403000"

# 0x005: NOP
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00500000"

# 0x006: INC R00
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00611010"

# 0x007: NOP
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00700000"

# 0x008: CALL 0x01B
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0083B01B"

# 0x009: NOP
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00900000"

# 0x00A: PUSH R03
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00A3C003"

# 0x00B: NOP
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00B00000"

# 0x00C: PUSH R02
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00C3C002"

# 0x00D: NOP
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00D00000"

# 0x00E: PUSH R01
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00E3C001"

# 0x00F: NOP
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00F00000"

# 0x010: PUSH R00
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0103C000"

# 0x011: NOP
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01100000"

# 0x012: POP R00
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0123D000"

# 0x013: NOP
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01300000"

# 0x014: POP R01
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0143D001"

# 0x015: NOP
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01500000"

# 0x016: POP R02
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0163D002"

# 0x017: NOP
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01700000"

# 0x018: POP R03
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0183D003"

# 0x019: NOP
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01900000"

# 0x01A: JMP 0x005
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01A30005"

# 0x01B: RET
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01B3E000"

# Assembled from reti_issue.jsm
# ---------------------------------------------------------------
# Shift the USER2 Instruction (b1111000011) into the Instruction Register of FPGA
# User 2
set result [::chipscope::csejtag_tap shift_device_ir $handle $devid $CSE_OP $CSE_ES 0 $irlength "3C3"]


::chipscope::csejtag_target unlock $handle
::chipscope::csejtag_target close $handle
::chipscope::csejtag_session destroy $handle
exit