1 # script for stm32g0x family
4 # stm32g0 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 stm32g0x
17 # Work-area is a space in RAM used for flash programming
18 # Smallest proposed target has 8kB ram, use 4kB by default to avoid surprises
19 if { [info exists WORKAREASIZE] } {
20 set _WORKAREASIZE $WORKAREASIZE
22 set _WORKAREASIZE 0x1000
26 if { [info exists CPUTAPID] } {
27 set _CPUTAPID $CPUTAPID
29 # Section 37.5.5 - corresponds to Cortex-M0+
30 set _CPUTAPID 0x0bc11477
33 swj_newdap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
34 dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
36 set _TARGETNAME $_CHIPNAME.cpu
37 target create $_TARGETNAME cortex_m -endian $_ENDIAN -dap $_CHIPNAME.dap
39 $_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
41 set _FLASHNAME $_CHIPNAME.flash
42 flash bank $_FLASHNAME stm32l4x 0 0 0 0 $_TARGETNAME
47 adapter srst delay 100
52 reset_config srst_nogate
55 # if srst is not fitted use SYSRESETREQ to
56 # perform a soft reset
57 cortex_m reset_config sysresetreq
60 proc stm32g0x_default_reset_start {} {
61 # Reset clock is HSI16 (16 MHz)
65 proc stm32g0x_default_examine_end {} {
66 # DBGMCU_CR |= DBG_STANDBY | DBG_STOP
67 mmw 0x40015804 0x00000006 0
69 # Stop watchdog counters during halt
70 # DBGMCU_APB1_FZ |= DBG_IWDG_STOP | DBG_WWDG_STOP
71 mmw 0x40015808 0x00001800 0
74 proc stm32g0x_default_reset_init {} {
75 # Increase clock to 64 Mhz
76 mmw 0x40022000 0x00000002 0x00000005 ;# FLASH_ACR: Latency = 2
77 mww 0x4002100C 0x30000802 ;# RCC_PLLCFGR = PLLR=/2, PLLN=8, PLLM=/1, PLLSRC=0x2
78 mmw 0x40021000 0x01000000 0x00000000 ;# RCC_CR |= PLLON
79 mmw 0x40021008 0x00000002 0x00000005 ;# RCC_CFGR: SW=PLLRCLK
81 # Boost JTAG frequency
86 $_TARGETNAME configure -event examine-end { stm32g0x_default_examine_end }
87 $_TARGETNAME configure -event reset-start { stm32g0x_default_reset_start }
88 $_TARGETNAME configure -event reset-init { stm32g0x_default_reset_init }