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- # script for stm32wlx family
-
- #
- # stm32wl 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 stm32wlx
- }
-
- set _ENDIAN little
-
- # Work-area is a space in RAM used for flash programming
- # By default use 20kB
- if { [info exists WORKAREASIZE] } {
- set _WORKAREASIZE $WORKAREASIZE
- } else {
- set _WORKAREASIZE 0x5000
- }
-
- #jtag scan chain
- if { [info exists CPUTAPID] } {
- set _CPUTAPID $CPUTAPID
- } else {
- if { [using_jtag] } {
- set _CPUTAPID 0x6ba00477
- } else {
- # SWD IDCODE (single drop, arm)
- set _CPUTAPID 0x6ba02477
- }
- }
-
- swj_newdap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
- dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
-
- if {[using_jtag]} {
- jtag newtap $_CHIPNAME bs -irlen 5
- }
-
- set _TARGETNAME $_CHIPNAME.cpu
- target create $_TARGETNAME cortex_m -endian $_ENDIAN -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 0x1fff7000 0 0 0 $_TARGETNAME
-
- # Common knowledges tells JTAG speed should be <= F_CPU/6.
- # F_CPU after reset is MSI 4MHz, so use F_JTAG = 500 kHz to stay on
- # the safe side.
- #
- # Note that there is a pretty wide band where things are
- # more or less stable, see http://openocd.zylin.com/#/c/3366/
- adapter speed 500
-
- adapter srst delay 100
- if {[using_jtag]} {
- jtag_ntrst_delay 100
- }
-
- reset_config srst_nogate
-
- if {![using_hla]} {
- # if srst is not fitted use SYSRESETREQ to
- # perform a soft reset
- cortex_m reset_config sysresetreq
- }
-
- $_TARGETNAME configure -event reset-init {
- # CPU comes out of reset with MSI_ON | MSI_RDY | MSI Range 4 MHz.
- # Configure system to use MSI 24 MHz clock, compliant with VOS default Range1.
- # 2 WS compliant with VOS=Range1 and 24 MHz.
- mmw 0x58004000 0x00000102 0 ;# FLASH_ACR |= PRFTEN | 2(Latency)
- mmw 0x58000000 0x00000091 0 ;# RCC_CR = MSI_ON | MSI Range 24 MHz
- # Boost JTAG frequency
- adapter speed 4000
- }
-
- $_TARGETNAME configure -event reset-start {
- # Reset clock is MSI (4 MHz)
- adapter speed 500
- }
-
- $_TARGETNAME configure -event examine-end {
- # Enable debug during low power modes (uses more power)
- # DBGMCU_CR |= DBG_STANDBY | DBG_STOP | DBG_SLEEP
- mmw 0xE0042004 0x00000007 0
-
- # Stop watchdog counters during halt
- # DBGMCU_APB1_FZR1 |= DBG_IWDG_STOP | DBG_WWDG_STOP
- mmw 0xE004203C 0x00001800 0
- }
-
- $_TARGETNAME configure -event trace-config {
- # nothing to do
- }
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