# FreeScale Kinetis K20 devices with 32kB Flash and 8kB Local On-Chip SRAM,
# Nemuisan's Special for MK20DN32VFT5,MK20DX32VFT5,MK10DN32VFT5,MK10DX32VFT5


source [find target/swj-dp.tcl]

if { [info exists CHIPNAME] } {
    set _CHIPNAME $CHIPNAME
} else {
    set _CHIPNAME k20
}

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

if { [info exists CPUTAPID] } {
   set _CPUTAPID $CPUTAPID
} else {
   if { [using_jtag] } {
      set _CPUTAPID 0x4BA00477
   } {
      # this is the SW-DP tap id not the jtag tap id
      set _CPUTAPID 0x2BA01477
   }
}

# Work-area is a space in RAM used for flash programming
# By default use 8kB
if { [info exists WORKAREASIZE] == 0 } {
   set _WORKAREASIZE 0x2000
}

# Select "srst_only", Nemuisan said so!
echo "Kinetis MUST need Hardware SRST Control to Recover Secure-State!"
adapter_nsrst_delay 200
reset_config srst_only

swj_newdap $_CHIPNAME cpu -irlen 4 -expected-id $_CPUTAPID
set _TARGETNAME $_CHIPNAME.cpu
target create $_TARGETNAME cortex_m -chain-position $_TARGETNAME

# It is important that "kinetis mdm check_security" is called for
# 'examine-end' event and not 'eximine-start'. Calling it in 'examine-start'
# causes "kinetis mdm check_security" to fail the first time openocd
# calls it when it tries to connect after the CPU has been power-cycled.
$_CHIPNAME.cpu configure -event examine-end {
	kinetis mdm check_security
# Uncomment when gone into s*ck'n secured state!
#	kinetis mdm mass_erase
}

# K20 has minimun 8kB of SRAM and starts at 1FFFF000.
$_TARGETNAME configure -work-area-phys 0x1FFFF000 -work-area-size $_WORKAREASIZE -work-area-backup 0 -rtos auto

# MK20DN32VFT5,MK20DX32VFT5,MK10DN32VFT5,MK10DX32VFT5 has 32kB of flash memory.
flash bank $_CHIPNAME.pflash kinetis 0x00000000 0x8000 0 4 $_TARGETNAME


proc mt_flash {IMGFILE} {
	flash write_image erase $IMGFILE
	reset run
	halt
	verify_image $IMGFILE
	reset run
	shutdown
}

proc mt_flash_bin {IMGFILE OFFSET} {
	flash write_image erase $IMGFILE $OFFSET bin
	reset run
	halt
	verify_image $IMGFILE $OFFSET bin
	reset run
	shutdown
}

proc mt_flash_hex {IMGFILE} {
	flash write_image erase $IMGFILE 0 ihex
	reset run
	halt
	verify_image $IMGFILE 0 ihex
	reset run
	shutdown
}

proc mt_flash_srec {IMGFILE} {
	flash write_image erase $IMGFILE 0 s19
	reset run
	halt
	verify_image $IMGFILE 0 s19
	reset run
	shutdown
}

proc mass_erase {} {
	kinetis mdm mass_erase
}

proc eraser {} {
# Verbose procedure confirmed erase routine
	flash info 0
# CAUTION! "flash erase_sector 0 0 last" goes into secure state!!!
# USE "mass_erase" command instead of
#	flash erase_sector 0 0 last
	mass_erase
	shutdown
}


#debug_level 3
# HLA doesn't have cortex_m commands 
if {![using_hla]} {
   # if srst is not fitted use SYSRESETREQ to
   # perform a soft reset
   cortex_m reset_config sysresetreq
}
adapter_khz 1000
reset_config srst_only srst_nogate connect_assert_srst
gdb_target_description disable
init
reset init