# SPDX-License-Identifier: GPL-2.0-or-later

# Configuration file for STM32U0x series.
#
# STM32U0 devices support only SWD transport.
#

source [find mem_helper.tcl]

if { [info exists CHIPNAME] } {
	set _CHIPNAME $CHIPNAME
} else {
	set _CHIPNAME stm32u0x
}

# Work-area is a space in RAM used for flash programming, by default use 4 KiB.
if { [info exists WORKAREASIZE] } {
   set _WORKAREASIZE $WORKAREASIZE
} else {
   set _WORKAREASIZE 0x1000
}

if { [info exists CPUTAPID] } {
   set _CPUTAPID $CPUTAPID
} else {
   set _CPUTAPID 0x6ba02477
}

swd newdap $_CHIPNAME cpu -expected-id $_CPUTAPID
dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu

set _TARGETNAME $_CHIPNAME.cpu
target create $_TARGETNAME cortex_m -endian little -dap $_CHIPNAME.dap

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

flash bank $_CHIPNAME.flash stm32l4x 0x08000000 0 0 0 $_TARGETNAME
flash bank $_CHIPNAME.otp   stm32l4x 0x1FFF6800 0 0 0 $_TARGETNAME

adapter speed 2000

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

$_TARGETNAME configure -event examine-end {
	# Enable debug during low power modes (uses more power).
	# DBGMCU_CR |= DBG_STANDBY | DBG_STOP
	mmw 0x40015804 0x00000006 0

	# Stop watchdog counters when core is halted.
	# DBGMCU_APB1_FZR |= DBG_IWDG_STOP | DBG_WWDG_STOP
	mmw 0x40015808 0x00001800 0
}