# 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
}

if { [info exists ENDIAN] } {
   set _ENDIAN $ENDIAN
} else {
   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 {
  # See STM Document RM0316
  # Section 29.6.3 - corresponds to Cortex-M4 r0p1
   set _CPUTAPID 0x4ba00477
}

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 2 Section 30.6.2 says 0x06432041
  # but STM32F303VCT6 rev Y has 0x06422041
  set _BSTAPID1 0x06422041
  set _BSTAPID2 0x06432041
}

if {$using_jtag} {
 jtag newtap $_CHIPNAME bs -irlen 5 -expected-id $_BSTAPID1 -expected-id $_BSTAPID2
}

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

# if srst is not fitted use SYSRESETREQ to
# perform a soft reset
cortex_m reset_config sysresetreq
