tcl/target/stm32l0.cfg

   1 #
   2 # M0+ devices only have SW-DP, but swj-dp code works, just don't
   3 # set any jtag related features
   4 #
   5
   6 source [find target/swj-dp.tcl]
   7
   8 if { [info exists CHIPNAME] } {
   9    set _CHIPNAME $CHIPNAME
  10 } else {
  11    set _CHIPNAME stm32l0
  12 }
  13
  14 # Work-area is a space in RAM used for flash programming
  15 # By default use 8kB (max ram on smallest part)
  16 if { [info exists WORKAREASIZE] } {
  17    set _WORKAREASIZE $WORKAREASIZE
  18 } else {
  19    set _WORKAREASIZE 0x2000
  20 }
  21
  22 # JTAG speed should be <= F_CPU/6.
  23 # F_CPU after reset is ~2MHz, so use F_JTAG max = 333kHz
  24 adapter_khz 300
  25
  26 adapter_nsrst_delay 100
  27
  28 if { [info exists CPUTAPID] } {
  29     set _CPUTAPID $CPUTAPID
  30 } else {
  31     # Arm, m0+, non-multidrop.
  32     # http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.faqs/ka16088.html
  33     set _CPUTAPID 0x0bc11477
  34 }
  35
  36 swj_newdap $_CHIPNAME cpu -expected-id $_CPUTAPID
  37
  38 set _TARGETNAME $_CHIPNAME.cpu
  39 target create $_TARGETNAME cortex_m -chain-position $_TARGETNAME
  40
  41 $_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
  42
  43 # flash size will be probed
  44 set _FLASHNAME $_CHIPNAME.flash
  45 flash bank $_FLASHNAME stm32lx 0x08000000 0 0 0 $_TARGETNAME
  46
  47 if {![using_hla]} {
  48    # if srst is not fitted use SYSRESETREQ to
  49    # perform a soft reset
  50    cortex_m reset_config sysresetreq
  51 }
  52
  53 proc stm32l0_enable_HSI16 {} {
  54         # Enable HSI16 as clock source
  55         echo "STM32L0: Enabling HSI16"
  56
  57         # Set HSI16ON in RCC_CR (leave MSI enabled)
  58         mww 0x40021000 0x00000101
  59
  60         # Set HSI16 as SYSCLK (RCC_CFGR)
  61         mww 0x4002100c 0x00000001
  62
  63         # Increase speed
  64         adapter_khz 2500
  65 }
  66
  67 $_TARGETNAME configure -event reset-init {
  68         stm32l0_enable_HSI16
  69 }
  70
  71 $_TARGETNAME configure -event reset-start {
  72         adapter_khz 300
  73 }