1 # SPDX-License-Identifier: GPL-2.0-or-later
3 # script for stm32wbax family
6 # stm32wba devices support both JTAG and SWD transports.
8 source [find target/swj-dp.tcl]
9 source [find mem_helper.tcl]
11 if { [info exists CHIPNAME] } {
12 set _CHIPNAME $CHIPNAME
14 set _CHIPNAME stm32wbax
17 # Work-area is a space in RAM used for flash programming
19 if { [info exists WORKAREASIZE] } {
20 set _WORKAREASIZE $WORKAREASIZE
22 set _WORKAREASIZE 0x10000
26 if { [info exists CPUTAPID] } {
27 set _CPUTAPID $CPUTAPID
30 set _CPUTAPID 0x6ba00477
32 # SWD IDCODE (single drop, arm)
33 set _CPUTAPID 0x6ba02477
37 swj_newdap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
38 dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
41 jtag newtap $_CHIPNAME bs -irlen 5
44 set _TARGETNAME $_CHIPNAME.cpu
45 target create $_TARGETNAME cortex_m -endian little -dap $_CHIPNAME.dap -ap-num 1
47 $_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
49 flash bank $_CHIPNAME.flash stm32l4x 0x08000000 0 0 0 $_TARGETNAME
50 flash bank $_CHIPNAME.otp stm32l4x 0x0FF90000 0 0 0 $_TARGETNAME
52 # Common knowledges tells JTAG speed should be <= F_CPU/6.
53 # F_CPU after reset is MSI 4MHz, so use F_JTAG = 500 kHz to stay on
56 # Note that there is a pretty wide band where things are
57 # more or less stable, see http://openocd.zylin.com/#/c/3366/
60 adapter srst delay 100
65 reset_config srst_nogate
68 # if srst is not fitted use SYSRESETREQ to
69 # perform a soft reset
70 cortex_m reset_config sysresetreq
73 $_TARGETNAME configure -event reset-init {
74 # CPU comes out of reset with HSION | HSIRDY.
75 # Use HSI 16 MHz clock, compliant even with VOS == 2.
76 # 1 WS compliant with VOS == 2 and 16 MHz.
77 mmw 0x40022000 0x00000001 0x0000000E ;# FLASH_ACR: Latency = 1
78 mmw 0x56020C00 0x00000100 0x00000000 ;# RCC_CR |= HSION
79 mmw 0x56020C1C 0x00000000 0x00000002 ;# RCC_CFGR1: SW=HSI16
80 # Boost JTAG frequency
84 $_TARGETNAME configure -event reset-start {
85 # Reset clock is HSI (16 MHz)
89 $_TARGETNAME configure -event examine-end {
90 # Enable debug during low power modes (uses more power)
91 # DBGMCU_CR |= DBG_STANDBY | DBG_STOP
92 mmw 0xE0042004 0x00000006 0
94 # Stop watchdog counters during halt
95 # DBGMCU_APB1LFZR |= DBG_IWDG_STOP | DBG_WWDG_STOP
96 mmw 0xE0042008 0x00001800 0
99 tpiu create $_CHIPNAME.tpiu -dap $_CHIPNAME.dap -ap-num 0 -baseaddr 0xE0040000
101 lappend _telnet_autocomplete_skip _proc_pre_enable_$_CHIPNAME.tpiu
102 proc _proc_pre_enable_$_CHIPNAME.tpiu {_targetname} {
106 $_CHIPNAME.tpiu configure -event pre-enable "_proc_pre_enable_$_CHIPNAME.tpiu $_TARGETNAME"