riscv-openocd/tcl/target/lpc1768.cfg

# NXP LPC1768 Cortex-M3 with 512kB Flash and 32kB+32kB Local On-Chip SRAM, clocked with 4MHz internal RC oscillator

if { [info exists CHIPNAME] } {
	set  _CHIPNAME $CHIPNAME
} else {
	set  _CHIPNAME lpc1768
}

if { [info exists ENDIAN] } {
	set  _ENDIAN $ENDIAN
} else {
	set  _ENDIAN little
}

if { [info exists CPUTAPID ] } {
	set _CPUTAPID $CPUTAPID
} else {
	set _CPUTAPID 0x4ba00477
}

#delays on reset lines
jtag_nsrst_delay 200
jtag_ntrst_delay 200

# LPC2000 & LPC1700 -> SRST causes TRST
reset_config trst_and_srst srst_pulls_trst

jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID

set _TARGETNAME $_CHIPNAME.cpu
target create $_TARGETNAME cortex_m3 -endian $_ENDIAN -chain-position $_TARGETNAME

# LPC1768 has 32kB of SRAM on its main system bus (so-called Local On-Chip SRAM)
$_TARGETNAME configure -work-area-virt 0 -work-area-phys 0x10000000 -work-area-size 0x8000 -work-area-backup 0

$_TARGETNAME configure -event reset-init {
	# Force target into ARM state
	armv4_5 core_state arm
	#do not remap 0x0000-0x0020 to anything but the flash
#	mwb 0xE01FC040 0x01
	mwb 0xE000ED08 0x00
}

# LPC1768 has 512kB of user-available FLASH (bootloader is located in separate dedicated region).
# flash bank lpc1700 <base> <size> 0 0 <target#> <variant> <cclk> [calc_checksum]

flash bank lpc2000 0x0 0x80000 0 0 $_TARGETNAME lpc1700 12000 calc_checksum

# 4MHz / 6 = 666kHz, so use 500
jtag_khz 500