openocd.cfg

adapter_khz     1000
reset_config srst_only
adapter_nsrst_assert_width 100

interface cmsis-dap

transport select jtag

set _CHIPNAME riscv
jtag newtap $_CHIPNAME cpu -irlen 5 -expected-id 0x1e200a6d

set _TARGETNAME $_CHIPNAME.cpu
target create $_TARGETNAME riscv -chain-position $_TARGETNAME
$_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size 20480 -work-area-backup 0


# Work-area is a space in RAM used for flash programming
if { [info exists WORKAREASIZE] } {
   set _WORKAREASIZE $WORKAREASIZE
} else {
   set _WORKAREASIZE 0x5000
}

# Allow overriding the Flash bank size
if { [info exists FLASH_SIZE] } {
    set _FLASH_SIZE $FLASH_SIZE
} else {
    # autodetect size
    set _FLASH_SIZE 0
}

# flash size will be probed
set _FLASHNAME $_CHIPNAME.flash

flash bank $_FLASHNAME gd32vf103 0x08000000 0 0 0 $_TARGETNAME
riscv set_reset_timeout_sec 1
init

halt