1 # script for stm32f0x family
4 # stm32 devices support SWD transports only.
6 source [find target/swj-dp.tcl]
7 source [find mem_helper.tcl]
9 if { [info exists CHIPNAME] } {
10 set _CHIPNAME $CHIPNAME
12 set _CHIPNAME stm32f0x
17 # Work-area is a space in RAM used for flash programming
19 if { [info exists WORKAREASIZE] } {
20 set _WORKAREASIZE $WORKAREASIZE
22 set _WORKAREASIZE 0x1000
25 # Allow overriding the Flash bank size
26 if { [info exists FLASH_SIZE] } {
27 set _FLASH_SIZE $FLASH_SIZE
34 if { [info exists CPUTAPID] } {
35 set _CPUTAPID $CPUTAPID
37 # See STM Document RM0091
39 set _CPUTAPID 0x0bb11477
42 swj_newdap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
43 dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
45 set _TARGETNAME $_CHIPNAME.cpu
46 target create $_TARGETNAME cortex_m -endian $_ENDIAN -dap $_CHIPNAME.dap
48 $_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
50 # flash size will be probed
51 set _FLASHNAME $_CHIPNAME.flash
52 flash bank $_FLASHNAME stm32f1x 0x08000000 $_FLASH_SIZE 0 0 $_TARGETNAME
54 # adapter speed should be <= F_CPU/6. F_CPU after reset is 8MHz, so use F_JTAG = 1MHz
57 adapter srst delay 100
59 reset_config srst_nogate
62 # if srst is not fitted use SYSRESETREQ to
63 # perform a soft reset
64 cortex_m reset_config sysresetreq
67 proc stm32f0x_default_reset_start {} {
68 # Reset clock is HSI (8 MHz)
72 proc stm32f0x_default_examine_end {} {
73 # Enable debug during low power modes (uses more power)
74 mmw 0x40015804 0x00000006 0 ;# DBGMCU_CR |= DBG_STANDBY | DBG_STOP
76 # Stop watchdog counters during halt
77 mmw 0x40015808 0x00001800 0 ;# DBGMCU_APB1_FZ |= DBG_IWDG_STOP | DBG_WWDG_STOP
80 proc stm32f0x_default_reset_init {} {
81 # Configure PLL to boost clock to HSI x 6 (48 MHz)
82 mww 0x40021004 0x00100000 ;# RCC_CFGR = PLLMUL[2]
83 mmw 0x40021000 0x01000000 0 ;# RCC_CR[31:16] |= PLLON
84 mww 0x40022000 0x00000011 ;# FLASH_ACR = PRFTBE | LATENCY[0]
85 sleep 10 ;# Wait for PLL to lock
86 mmw 0x40021004 0x00000002 0 ;# RCC_CFGR |= SW[1]
88 # Boost JTAG frequency
93 $_TARGETNAME configure -event examine-end { stm32f0x_default_examine_end }
94 $_TARGETNAME configure -event reset-start { stm32f0x_default_reset_start }
95 $_TARGETNAME configure -event reset-init { stm32f0x_default_reset_init }