# script for stm32f3x family

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

if { [info exists CHIPNAME] } {
   set _CHIPNAME $CHIPNAME
} else {
   set _CHIPNAME stm32f3x
}

set _ENDIAN little

# Work-area is a space in RAM used for flash programming
# By default use 16kB
if { [info exists WORKAREASIZE] } {
   set _WORKAREASIZE $WORKAREASIZE
} else {
   set _WORKAREASIZE 0x4000
}

# JTAG speed should be <= F_CPU/6. F_CPU after reset is 8MHz, so use F_JTAG = 1MHz
#
# 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 1000

adapter_nsrst_delay 100
if {[using_jtag]} {
 jtag_ntrst_delay 100
}

#jtag scan chain
if { [info exists CPUTAPID] } {
   set _CPUTAPID $CPUTAPID
} else {
   if { [using_jtag] } {
      # See STM Document RM0316
      # Section 29.6.3 - 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 _BSTAPID $BSTAPID
} else {
  # STM Document RM0316 rev 5 for STM32F302/303 B/C size
  set _BSTAPID1 0x06422041
  # STM Document RM0313 rev 3 for STM32F37x
  set _BSTAPID2 0x06432041
  # STM Document RM0313 rev 3 for STM32F37x Chip Revision 1.0
  set _BSTAPID3 0x06422041
  #  STM Document RM364 rev 1 for STM32F334
  set _BSTAPID4 0x06438041
  #  STM Document RM316 rev 5 for STM32F303 6/8 size
  #  STM Document RM365 rev 3 for STM32F302 6/8 size
  #  STM Document RM366 rev 2 for STM32F301 6/8 size
  set _BSTAPID5 0x06439041
  #  STM Document RM016 rev 5 for STM32F303 D/E size
  set _BSTAPID6 0x06446041
}

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
}

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

$_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0

set _FLASHNAME $_CHIPNAME.flash
flash bank $_FLASHNAME stm32f1x 0 0 0 0 $_TARGETNAME

reset_config srst_nogate

if {![using_hla]} {
   # if srst is not fitted use SYSRESETREQ to
   # perform a soft reset
   cortex_m reset_config sysresetreq
}