# script for stm32f4x family

#
# stm32 devices support both JTAG and SWD transports.
#
source [find target/swj-dp.tcl]
source [find mem_helper.tcl]

if { [info exists CHIPNAME] } {
   set _CHIPNAME $CHIPNAME
} else {
   set _CHIPNAME stm32f4x
}

set _ENDIAN little

#jtag scan chain
if { [info exists CPUTAPID] } {
   set _CPUTAPID $CPUTAPID
} else {
   if { [using_jtag] } {
      # See STM Document RM0090
      # Section 38.6.3 - corresponds to Cortex-M4 r0p1
      set _CPUTAPID 0x4ba00477
   } {
      set _CPUTAPID 0x2ba01477
   }
}

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

if { [info exists BSTAPID] } {
   set _BSTAPID1 $BSTAPID
} else {
  # See STM Document RM0090
  # Section 38.6.2
  # STM32F405xx/07xx and STM32F415xx/17xx
  # or STM Document RM0390
  # Section 34.6.2
  # STM32F446
  set _BSTAPID1 0x06413041
  # STM32F42xxx and STM32F43xxx
  set _BSTAPID2 0x06419041
  # See STM Document RM0368 (Rev. 3)
  # STM32F401B/C
  set _BSTAPID3 0x06423041
  # STM32F401D/E
  set _BSTAPID4 0x06433041
  # See STM Document RM0383 (Rev 2)
  # STM32F411
  set _BSTAPID5 0x06431041
  # See STM Document RM0386
  # STM32F469
  set _BSTAPID6 0x06434041
  # STM32F410
  set _BSTAPID7 0x06458041
  # STM32F412
  set _BSTAPID8 0x06441041
}

if {[using_jtag]} {
 swj_newdap $_CHIPNAME bs -irlen 5 -expected-id $_BSTAPID1 \
     -expected-id $_BSTAPID2 -expected-id $_BSTAPID3 -expected-id $_BSTAPID4 \
	 -expected-id $_BSTAPID5 -expected-id $_BSTAPID6 -expected-id $_BSTAPID7 \
	 -expected-id $_BSTAPID8
}

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

set _FLASHNAME $_CHIPNAME.flash
flash bank $_FLASHNAME stm32f2x 0 0 0 0 $_TARGETNAME

# JTAG speed should be <= F_CPU/6. F_CPU after reset is 16MHz, so use F_JTAG = 2MHz
#
# Since we may be running of an RC oscilator, we crank down the speed a
# bit more to be on the safe side. Perhaps superstition, but if are
# running off a crystal, we can run closer to the limit. Note
# that there can be a pretty wide band where things are more or less stable.
adapter_khz 2000