# "JTAG adapter" for simulation, exposed to OpenOCD through a TCP socket 
# speaking the remote_bitbang protocol. The adapter is implemented as 
# SystemVerilog DPI module.

adapter driver remote_bitbang
remote_bitbang host localhost
remote_bitbang port 44853

# Target configuration for the riscv chip

set  _CHIPNAME riscv
set _TARGETNAME $_CHIPNAME.cpu

jtag newtap $_CHIPNAME tap -irlen 5 -expected-id 0x1000008b
set _TARGETNAME $_CHIPNAME.tap
target create $_TARGETNAME riscv -chain-position $_TARGETNAME 

# Configure work area in on-chip SRAM
# $_TARGETNAME configure -work-area-phys 0x1000e000 -work-area-size 1000 -work-area-backup 0

riscv expose_csrs 1988

# Be verbose about GDB errors
gdb_report_data_abort enable
gdb_report_register_access_error enable

# Increase timeouts in simulation
riscv set_command_timeout_sec 4200

# Conclude OpenOCD configuration
init

# Halt the target
halt