
if { [info exists CHIPNAME] } {	
   set  _CHIPNAME $CHIPNAME    
} else {	 
   set  _CHIPNAME lpc2148
}

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

if { [info exists CPUTAPID ] } {
   set _CPUTAPID $CPUTAPID
} else {
  # force an error till we get a good number
   set _CPUTAPID 0x4f1f0f0f
}

#delays on reset lines
jtag_nsrst_delay 200
jtag_ntrst_delay 200

# NOTE!!! LPCs need reset pulled while RTCK is low. 0 to activate 
# JTAG, power-on reset is not enough, i.e. you need to perform a
# reset before being able to talk to the LPC2148, attach is not
# possible.

#use combined on interfaces or targets that can't set TRST/SRST separately
reset_config trst_and_srst srst_pulls_trst

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

set _TARGETNAME [format "%s.cpu" $_CHIPNAME]
target create $_TARGETNAME arm7tdmi -endian $_ENDIAN -chain-position $_TARGETNAME -variant arm7tdmi-s_r4
$_TARGETNAME configure -work-area-virt 0 -work-area-phys 0x40000000 -work-area-size 0x8000 -work-area-backup 0
$_TARGETNAME configure -event reset-init {
	# Force target into ARM state
	soft_reset_halt
	#do not remap 0x0000-0x0020 to anything but the flash
	mwb 0xE01FC040 0x01 
	
}

# LPC2148 has 512kB of FLASH, but upper 8kB are occupied by bootloader.
# After reset the chip uses its internal 4MHz RC oscillator
#flash bank lpc2000 <base> <size> 0 0 <target#> <variant>
flash bank lpc2000 0x0 0x0007D000 0 0 0 lpc2000_v2 4000 calc_checksum

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

