tcl/target/rp2040.cfg

   1 # SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 # RP2040 is a microcontroller with dual Cortex-M0+ core.
   4 # https://www.raspberrypi.com/documentation/microcontrollers/rp2040.html
   5
   6 # The device requires multidrop SWD for debug.
   7 transport select swd
   8
   9 source [find target/swj-dp.tcl]
  10
  11 if { [info exists CHIPNAME] } {
  12         set _CHIPNAME $CHIPNAME
  13 } else {
  14         set _CHIPNAME rp2040
  15 }
  16
  17 if { [info exists WORKAREASIZE] } {
  18         set _WORKAREASIZE $WORKAREASIZE
  19 } else {
  20         set _WORKAREASIZE 0x10000
  21 }
  22
  23 if { [info exists CPUTAPID] } {
  24         set _CPUTAPID $CPUTAPID
  25 } else {
  26         set _CPUTAPID 0x01002927
  27 }
  28
  29 # Set to '1' to start rescue mode
  30 if { [info exists RESCUE] } {
  31         set _RESCUE $RESCUE
  32 } else {
  33         set _RESCUE 0
  34 }
  35
  36 # Set to '0' or '1' for single core configuration, 'SMP' for -rtos hwthread
  37 # handling of both cores, anything else for isolated debugging of both cores
  38 if { [info exists USE_CORE] } {
  39         set _USE_CORE $USE_CORE
  40 } else {
  41         set _USE_CORE SMP
  42 }
  43 set _BOTH_CORES [expr { $_USE_CORE != 0 && $_USE_CORE != 1 }]
  44
  45 swj_newdap $_CHIPNAME cpu -expected-id $_CPUTAPID
  46
  47 # The rescue debug port uses the DP CTRL/STAT bit DBGPWRUPREQ to reset the
  48 # PSM (power on state machine) of the RP2040 with a flag set in the
  49 # VREG_AND_POR_CHIP_RESET register. Once the reset is released
  50 # (by clearing the DBGPWRUPREQ flag), the bootrom will run, see this flag,
  51 # and halt. Allowing the user to load some fresh code, rather than loading
  52 # the potentially broken code stored in flash
  53 if { $_RESCUE } {
  54         dap create $_CHIPNAME.rescue_dap -chain-position $_CHIPNAME.cpu -dp-id $_CPUTAPID -instance-id 0xf -ignore-syspwrupack
  55         init
  56
  57         # Clear DBGPWRUPREQ
  58         $_CHIPNAME.rescue_dap dpreg 0x4 0x00000000
  59
  60         # Verifying CTRL/STAT is 0
  61         set _CTRLSTAT [$_CHIPNAME.rescue_dap dpreg 0x4]
  62         if {[expr {$_CTRLSTAT & 0xf0000000}]} {
  63                 echo "Rescue failed, DP CTRL/STAT readback $_CTRLSTAT"
  64         } else {
  65                 echo "Now restart OpenOCD without RESCUE flag and load code to RP2040"
  66         }
  67         shutdown
  68 }
  69
  70 # core 0
  71 if { $_USE_CORE != 1 } {
  72         dap create $_CHIPNAME.dap0 -chain-position $_CHIPNAME.cpu -dp-id $_CPUTAPID -instance-id 0
  73         set _TARGETNAME_0 $_CHIPNAME.core0
  74         target create $_TARGETNAME_0 cortex_m -dap $_CHIPNAME.dap0 -coreid 0
  75         # srst does not exist; use SYSRESETREQ to perform a soft reset
  76         $_TARGETNAME_0 cortex_m reset_config sysresetreq
  77 }
  78
  79 # core 1
  80 if { $_USE_CORE != 0 } {
  81         dap create $_CHIPNAME.dap1 -chain-position $_CHIPNAME.cpu -dp-id $_CPUTAPID -instance-id 1
  82         set _TARGETNAME_1 $_CHIPNAME.core1
  83         target create $_TARGETNAME_1 cortex_m -dap $_CHIPNAME.dap1 -coreid 1
  84         $_TARGETNAME_1 cortex_m reset_config sysresetreq
  85 }
  86
  87 if {[string compare $_USE_CORE SMP] == 0} {
  88         $_TARGETNAME_0 configure  -rtos hwthread
  89         $_TARGETNAME_1 configure  -rtos hwthread
  90         target smp $_TARGETNAME_0 $_TARGETNAME_1
  91 }
  92
  93 if { $_USE_CORE == 1 } {
  94         set _FLASH_TARGET $_TARGETNAME_1
  95 } else {
  96         set _FLASH_TARGET $_TARGETNAME_0
  97 }
  98 # Backup the work area. The flash probe runs an algorithm on the target CPU.
  99 # The flash is probed during gdb connect if gdb_memory_map is enabled (by default).
 100 $_FLASH_TARGET configure -work-area-phys 0x20010000 -work-area-size $_WORKAREASIZE -work-area-backup 1
 101 set _FLASHNAME $_CHIPNAME.flash
 102 flash bank $_FLASHNAME rp2040_flash 0x10000000 0 0 0 $_FLASH_TARGET
 103
 104 if { $_BOTH_CORES } {
 105         # Alias to ensure gdb connecting to core 1 gets the correct memory map
 106         flash bank $_CHIPNAME.alias virtual 0x10000000 0 0 0 $_TARGETNAME_1 $_FLASHNAME
 107
 108         # Select core 0
 109         targets $_TARGETNAME_0
 110 }