tcl/target/bcm2711.cfg

   1 # SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 # The Broadcom BCM2711 used in Raspberry Pi 4
   4 # No documentation was found on Broadcom website
   5
   6 # Partial information is available in raspberry pi website:
   7 # https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2711/
   8
   9 if { [info exists CHIPNAME] } {
  10         set  _CHIPNAME $CHIPNAME
  11 } else {
  12         set  _CHIPNAME bcm2711
  13 }
  14
  15 if { [info exists CHIPCORES] } {
  16         set _cores $CHIPCORES
  17 } else {
  18         set _cores 4
  19 }
  20
  21 if { [info exists USE_SMP] } {
  22         set _USE_SMP $USE_SMP
  23 } else {
  24         set _USE_SMP 0
  25 }
  26
  27 if { [info exists DAP_TAPID] } {
  28         set _DAP_TAPID $DAP_TAPID
  29 } else {
  30         set _DAP_TAPID 0x4ba00477
  31 }
  32
  33 jtag newtap $_CHIPNAME cpu -expected-id $_DAP_TAPID -irlen 4
  34 adapter speed 4000
  35
  36 dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
  37
  38 # MEM-AP for direct access
  39 target create $_CHIPNAME.ap mem_ap -dap $_CHIPNAME.dap -ap-num 0
  40
  41 # these addresses are obtained from the ROM table via 'dap info 0' command
  42 set _DBGBASE {0x80410000 0x80510000 0x80610000 0x80710000}
  43 set _CTIBASE {0x80420000 0x80520000 0x80620000 0x80720000}
  44
  45 set _smp_command "target smp"
  46
  47 for { set _core 0 } { $_core < $_cores } { incr _core } {
  48         set _CTINAME $_CHIPNAME.cti$_core
  49         set _TARGETNAME $_CHIPNAME.cpu$_core
  50
  51         cti create $_CTINAME -dap $_CHIPNAME.dap -ap-num 0 -baseaddr [lindex $_CTIBASE $_core]
  52         target create $_TARGETNAME aarch64 -dap $_CHIPNAME.dap -ap-num 0 -dbgbase [lindex $_DBGBASE $_core] -cti $_CTINAME
  53
  54         set _smp_command "$_smp_command $_TARGETNAME"
  55 }
  56
  57 if {$_USE_SMP} {
  58         eval $_smp_command
  59 }
  60
  61 # default target is cpu0
  62 targets $_CHIPNAME.cpu0