Atmel ATDH1150USB on OpenOCD

atdh1150usb.cfg

# Atmel ATDH1150USB as an OpenOCD JTAG adapter (Linux)
#
# This is Microchip's official USB JTAG adapter for their CPLD devices. On
# Windows you can use ATMISP. The robots would have you believe it's not
# supported on Linux, but I think that's because nobody has bothered to write an
# OpenOCD config file for it. This one works for me.
#
# Inside the adapter is a FT2232D, 74HC244 output buffer, a few SN74LVC1T45
# level shifters and a status LED. VCCT needs to be supplied on the JTAG header
# to power the buffer and shifters. (See document revision
# Atmel-8909A-CPLD-ATDH1150USB-ATF15-JTAG-ISP-Download-Cable-UserGuide_072015
# for details)
#
# The adapter will show up as two FT2232D devices. Only the first is used.
#
# VID:PID 0403:6010 (EEPROM strings ATMEL / ATDH1150USB). MPSSE channel 0.
#
# Channel-A pin map:
#   AD0=TCK  AD1=TDI(out)  AD2=TDO(in)  AD3=TMS
#   ACBUS0 (0x100) = 74HC244 /OE
#   ACBUS2 (0x400) = Red LED     -> active low
#   ACBUS3 (0x800) = Green LED   -> active low
#
# layout_init default = 0x0ef8 0x0ffb:
#   dir 0x0ffb: TCK,TDI,TMS,ACBUS0-3,AD4-7 outputs; TDO input
#   data 0x0ef8: TMS high, ACBUS0 LOW (buffers on), RED+GREEN high (LEDs OFF)

adapter driver ftdi
ftdi vid_pid 0x0403 0x6010
ftdi channel 0
ftdi layout_init 0x0ef8 0x0ffb
ftdi layout_signal TCK -data 0x0001
ftdi layout_signal TDI -data 0x0002
ftdi layout_signal TDO -data 0x0004
ftdi layout_signal TMS -data 0x0008

transport select jtag
adapter speed 100

flash_cpld.sh

#!/usr/bin/env bash
# Flash an SVF to the ATF1504AS via the Atmel ATDH1150USB + OpenOCD.
#
# Usage: flash_cpld.sh <file.svf>
set -euo pipefail

HERE="$(dirname "$(readlink -f "$0")")"
CFG="$HERE/atdh1150usb.cfg"
SVF="${1:?usage: flash_cpld.sh <file.svf>}"

IDCODE=0x0150403f      # ATF1504AS
DIR=0x0ffb             # all JTAG + ACBUS0-3 + AD4-7 outputs; TDO input
# layout_init data
AMBER=0x02f8           # RED on  + GREEN on
GREEN=0x06f8           # GREEN on (RED off)  -> success
RED=0x0af8             # RED on   (GREEN off) -> failure

led() {  # $1 = layout_init data
  openocd -f "$CFG" -c "ftdi layout_init $1 $DIR" \
    -c "jtag newtap atf tap -irlen 10" \
    -c "catch { init }" -c shutdown >/dev/null 2>&1 || true
}

log="$(mktemp)"
trap 'rm -f "$log"' EXIT

echo ">>> Programming $(basename "$SVF")..."
openocd -f "$CFG" -c "ftdi layout_init $AMBER $DIR" \
  -c "jtag newtap atf tap -irlen 10 -expected-id $IDCODE" \
  -c init -c "svf $SVF" -c shutdown 2>&1 | tee "$log" || true

if grep -q "programmed successfully" "$log" && grep -q "with 0 errors" "$log"; then
  echo ">>> SUCCESS"
  led "$GREEN"
  exit 0
else
  echo ">>> FAILED" >&2
  led "$RED"
  exit 1
fi