
#
# PYNQ-Z1: Python Productivity for Zynq-7000 ARM/FPGA SoC
#
# https://reference.digilentinc.com/reference/programmable-logic/pynq-z1/start
#

# Device description changed from Digilent HS1 but is otherwise identical.
interface ftdi
transport select jtag
ftdi_device_desc "Digilent Adept USB Device"
ftdi_vid_pid 0x0403 0x6010

# channel 1 does not have any functionality
ftdi_channel 0

# just TCK TDI TDO TMS, no reset
ftdi_layout_init 0x0088 0x008b
adapter_khz 20000
reset_config none

# Modified Zynq-7000 configuration
set _CHIPNAME zynq
set _TARGETNAME $_CHIPNAME.cpu

jtag newtap zynq_pl bs -irlen 6 -ircapture 0x1 -irmask 0x03 \
    -expected-id 0x23727093 \
    -expected-id 0x13722093 \
    -expected-id 0x03727093 \
    -expected-id 0x03736093

jtag newtap $_CHIPNAME dap -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id 0x4ba00477

target create ${_TARGETNAME}0 cortex_a -chain-position $_CHIPNAME.dap \
    -coreid 0 -dbgbase 0x80090000
target create ${_TARGETNAME}1 cortex_a -chain-position $_CHIPNAME.dap \
    -coreid 1 -dbgbase 0x80092000
target smp ${_TARGETNAME}0 ${_TARGETNAME}1

${_TARGETNAME}0 configure -event reset-assert-post "cortex_a dbginit"
${_TARGETNAME}1 configure -event reset-assert-post "cortex_a dbginit"

pld device virtex2 zynq_pl.bs 1

set XC7_JSHUTDOWN 0x0d
set XC7_JPROGRAM 0x0b
set XC7_JSTART 0x0c
set XC7_BYPASS 0x3f

proc zynqpl_program {tap} {
	global XC7_JSHUTDOWN XC7_JPROGRAM XC7_JSTART XC7_BYPASS
	irscan $tap $XC7_JSHUTDOWN
	irscan $tap $XC7_JPROGRAM
	runtest 60000
	#JSTART prevents this from working...
	#irscan $tap $XC7_JSTART
	runtest 2000
	irscan $tap $XC7_BYPASS
	runtest 2000
}

proc zynqpl_reset_release {target} {
   # Unlock SLCR
    $target mww 0xf8000008 0xdf0d
    # Enable level shifters, both PL-PS and PS-PL
    $target mww 0xf8000900 0xF
    # Release FPGA reset
    $target mww 0xf8000240 0x0
    # Lock SLCR
    $target mww 0xf8000004 0x767b
}