tcl/target/ampere_emag.cfg

   1 #
   2 # OpenOCD Target Configuration for eMAG ARMv8 Processor
   3 #
   4 # Copyright (c) 2019-2021, Ampere Computing LLC
   5 #
   6 # This program is free software; you can redistribute it and/or
   7 # modify it under the terms of the GNU General Public License as
   8 # published by the Free Software Foundation; either version 2 of
   9 # the License, or (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program;
  18 #
  19 #
  20
  21 #
  22 # Configure defaults for target
  23 # Can be overriden in board configuration file
  24 #
  25
  26 if { [info exists CHIPNAME] } {
  27         set _CHIPNAME $CHIPNAME
  28 } else {
  29         set _CHIPNAME emag
  30 }
  31
  32 if { [info exists NUMCORES] } {
  33         set _NUMCORES $NUMCORES
  34 } else {
  35         set _NUMCORES 32
  36 }
  37
  38 if { [info exists ENDIAN] } {
  39         set _ENDIAN $ENDIAN
  40 } else {
  41         set _ENDIAN little
  42 }
  43
  44 if { [info exists CPUTAPID ] } {
  45         set _CPUTAPID $CPUTAPID
  46 } else {
  47         set _CPUTAPID 0x4BA00477
  48 }
  49
  50 #
  51 # Configure JTAG TAP
  52 #
  53
  54 jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0x3 -expected-id $_CPUTAPID
  55 set _TAPNAME $_CHIPNAME.cpu
  56
  57 set _DAPNAME ${_TAPNAME}_dap
  58 set _APNUM 1
  59 dap create $_DAPNAME -chain-position $_TAPNAME
  60 $_DAPNAME apsel $_APNUM
  61
  62 # Create the DAP AP0 MEM-AP AHB-AP target
  63 target create AHB mem_ap -endian $_ENDIAN -dap $_DAPNAME -ap-num 0
  64
  65 # Create the DAP AP1 MEM-AP APB-AP target
  66 target create APB mem_ap -endian $_ENDIAN -dap $_DAPNAME -ap-num 1
  67
  68 #
  69 # Configure target CPUs
  70 #
  71
  72 # Build string used to enable smp mode
  73 set _SMP_STR "target smp"
  74
  75 for {set _i 0} {$_i < $_NUMCORES} {incr _i} {
  76         # Format a string to reference which CPU target to use
  77         set _TARGETNAME [format "${_TAPNAME}_%02d" $_i]
  78
  79         # Create and configure Cross Trigger Interface (CTI) - required for halt and resume
  80         set _CTINAME $_TARGETNAME.cti
  81         cti create $_CTINAME -dap $_DAPNAME -ap-num $_APNUM -baseaddr [expr {0xFC020000 + ($_i << 20)}]
  82
  83         # Create the target
  84         target create $_TARGETNAME aarch64 -endian $_ENDIAN -dap $_DAPNAME -ap-num $_APNUM -cti $_CTINAME -coreid $_i
  85         set _SMP_STR "$_SMP_STR $_TARGETNAME"
  86
  87         # Clear CTI output/input enables that are not configured by OpenOCD for aarch64
  88         $_TARGETNAME configure -event examine-start [subst {
  89                 $_CTINAME write INEN0 0x00000000
  90                 $_CTINAME write INEN1 0x00000000
  91                 $_CTINAME write INEN2 0x00000000
  92                 $_CTINAME write INEN3 0x00000000
  93                 $_CTINAME write INEN4 0x00000000
  94                 $_CTINAME write INEN5 0x00000000
  95                 $_CTINAME write INEN6 0x00000000
  96                 $_CTINAME write INEN7 0x00000000
  97                 $_CTINAME write INEN8 0x00000000
  98
  99                 $_CTINAME write OUTEN2 0x00000000
 100                 $_CTINAME write OUTEN3 0x00000000
 101                 $_CTINAME write OUTEN4 0x00000000
 102                 $_CTINAME write OUTEN5 0x00000000
 103                 $_CTINAME write OUTEN6 0x00000000
 104                 $_CTINAME write OUTEN7 0x00000000
 105                 $_CTINAME write OUTEN8 0x00000000
 106         }]
 107
 108         # Enable OpenOCD HWTHREAD RTOS feature for GDB thread (CPU) selection support
 109         # This feature presents CPU cores ("hardware threads") in an SMP system as threads to GDB
 110         $_TARGETNAME configure -rtos hwthread
 111 }
 112 eval $_SMP_STR