openocd.cfg

# Ref: bl_iot_sdk/tools/debug/if_bflb_link.cfg
# source [find interface/if_bflb_link.cfg]

# BouffaloLab USB-JTAG/TTL adapter

adapter driver ftdi
ftdi_vid_pid 0x0403 0x6010

ftdi_channel 1

transport select jtag
adapter speed 2000

ftdi_layout_init 0x00f8 0x00fb

#ftdi_layout_signal nTRST -data 0x0400
#ftdi_layout_signal nSRST -ndata 0x0020

#reset_config srst_only srst_push_pull
#adapter_nsrst_delay 100
#adapter_nsrst_assert_width 100

# source [find target/tgt_602.cfg]

set _CHIPNAME riscv
jtag newtap $_CHIPNAME cpu -irlen 5 -expected-id 0x20000c05

set _TARGETNAME $_CHIPNAME.cpu
target create $_TARGETNAME.0 riscv -chain-position $_TARGETNAME
$_TARGETNAME.0 configure -work-area-phys 0x22020000 -work-area-size 0x10000 -work-area-backup 1

echo "Ready for Remote Connections"

$_TARGETNAME.0 configure -event reset-assert-pre {
    echo "reset-assert-pre"
    adapter speed 100
}

$_TARGETNAME.0 configure -event reset-deassert-post {
    echo "reset-deassert-post"
    adapter speed 4000
    reg mstatus 0x80000000
    reg pc 0x21000000
}

$_TARGETNAME.0 configure -event reset-init {
    echo "reset-init"
# 4MHz for FPGA
    adapter speed 4000
}

gdb_memory_map enable
gdb_flash_program disable

riscv set_prefer_sba on
riscv set_command_timeout_sec 1

init
reset init