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@@ -0,0 +1,103 @@
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+# script for stm32wbx family
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+
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+#
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+# stm32wb devices support both JTAG and SWD transports.
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+#
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+source [find target/swj-dp.tcl]
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+source [find mem_helper.tcl]
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+
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+if { [info exists CHIPNAME] } {
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+ set _CHIPNAME $CHIPNAME
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+} else {
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+ set _CHIPNAME stm32wbx
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+}
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+
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+set _ENDIAN little
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+
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+# Work-area is a space in RAM used for flash programming
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+# By default use 64kB
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+if { [info exists WORKAREASIZE] } {
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+ set _WORKAREASIZE $WORKAREASIZE
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+} else {
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+ set _WORKAREASIZE 0x10000
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+}
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+
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+#jtag scan chain
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+if { [info exists CPUTAPID] } {
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+ set _CPUTAPID $CPUTAPID
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+} else {
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+ if { [using_jtag] } {
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+ set _CPUTAPID 0x6ba00477
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+ } else {
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+ # SWD IDCODE (single drop, arm)
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+ set _CPUTAPID 0x6ba02477
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+ }
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+}
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+
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+swj_newdap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
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+dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
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+
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+if {[using_jtag]} {
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+ jtag newtap $_CHIPNAME bs -irlen 5
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+}
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+
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+set _TARGETNAME $_CHIPNAME.cpu
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+target create $_TARGETNAME cortex_m -endian $_ENDIAN -dap $_CHIPNAME.dap
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+
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+$_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
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+
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+set _FLASHNAME $_CHIPNAME.flash
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+flash bank $_FLASHNAME stm32l4x 0 0 0 0 $_TARGETNAME
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+
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+# Common knowledges tells JTAG speed should be <= F_CPU/6.
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+# F_CPU after reset is MSI 4MHz, so use F_JTAG = 500 kHz to stay on
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+# the safe side.
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+#
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+# Note that there is a pretty wide band where things are
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+# more or less stable, see http://openocd.zylin.com/#/c/3366/
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+adapter speed 8000
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+
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+adapter srst delay 100
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+if {[using_jtag]} {
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+ jtag_ntrst_delay 100
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+}
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+
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+reset_config srst_nogate
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+
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+if {![using_hla]} {
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+ # if srst is not fitted use SYSRESETREQ to
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+ # perform a soft reset
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+ cortex_m reset_config sysresetreq
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+}
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+
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+$_TARGETNAME configure -event reset-init {
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+ # CPU comes out of reset with MSI_ON | MSI_RDY | MSI Range 4 MHz.
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+ # Configure system to use MSI 24 MHz clock, compliant with VOS default Range1.
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+ # 2 WS compliant with VOS=Range1 and 24 MHz.
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+ mmw 0x58004000 0x00000102 0 ;# FLASH_ACR |= PRFTBE | 2(Latency)
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+ mmw 0x58000000 0x00000091 0 ;# RCC_CR = MSI_ON | MSI Range 24 MHz
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+ # Boost JTAG frequency
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+ adapter speed 8000
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+}
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+
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+$_TARGETNAME configure -event reset-start {
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+ # Reset clock is MSI (4 MHz)
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+ adapter speed 8000
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+}
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+
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+$_TARGETNAME configure -event examine-end {
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+ # Enable debug during low power modes (uses more power)
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+ # DBGMCU_CR |= DBG_STANDBY | DBG_STOP | DBG_SLEEP
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+ mmw 0xE0042004 0x00000007 0
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+
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+ # Stop watchdog counters during halt
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+ # DBGMCU_APB1_FZR1 |= DBG_IWDG_STOP | DBG_WWDG_STOP
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+ mmw 0xE004203C 0x00001800 0
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+}
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+
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+$_TARGETNAME configure -event trace-config {
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+ # Set TRACE_IOEN; TRACE_MODE is set to async; when using sync
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+ # change this value accordingly to configure trace pins
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+ # assignment
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+ mmw 0xE0042004 0x00000020 0
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+}
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