tcl/target: add BCM2837 configuration file

This is the Broadcom chip used in the Raspberry Pi 3,
and in later models of the Raspberry Pi 2.

Partial information is available in raspberry pi website:
https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2837
https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2837b0

Change-Id: I1188a7866304c59f670a543809aca3927174786e
Signed-off-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
Reviewed-on: http://openocd.zylin.com/6069
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>

diff --git a/tcl/target/bcm2837.cfg b/tcl/target/bcm2837.cfg
new file mode 100644 (file)
index 0000000..749de31
--- /dev/null
+++ b/tcl/target/bcm2837.cfg
@@ -0,0 +1,64 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# This is the Broadcom chip used in the Raspberry Pi 3,
+# and in later models of the Raspberry Pi 2.
+
+# Partial information is available in raspberry pi website:
+# https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2837
+# https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2837b0
+
+if { [info exists CHIPNAME] } {
+       set  _CHIPNAME $CHIPNAME
+} else {
+       set  _CHIPNAME bcm2837
+}
+
+if { [info exists CHIPCORES] } {
+       set _cores $CHIPCORES
+} else {
+       set _cores 4
+}
+
+if { [info exists USE_SMP] } {
+       set _USE_SMP $USE_SMP
+} else {
+       set _USE_SMP 0
+}
+
+if { [info exists DAP_TAPID] } {
+       set _DAP_TAPID $DAP_TAPID
+} else {
+       set _DAP_TAPID 0x4ba00477
+}
+
+jtag newtap $_CHIPNAME cpu -expected-id $_DAP_TAPID -irlen 4
+adapter speed 4000
+
+dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
+
+# MEM-AP for direct access
+target create $_CHIPNAME.ap mem_ap -dap $_CHIPNAME.dap -ap-num 0
+
+# these addresses are obtained from the ROM table via 'dap info 0' command
+set _DBGBASE {0x80010000 0x80012000 0x80014000 0x80016000}
+set _CTIBASE {0x80018000 0x80019000 0x8001a000 0x8001b000}
+
+set _smp_command "target smp"
+
+for { set _core 0 } { $_core < $_cores } { incr _core } {
+       set _CTINAME $_CHIPNAME.cti$_core
+       set _TARGETNAME $_CHIPNAME.cpu$_core
+
+       cti create $_CTINAME -dap $_CHIPNAME.dap -ap-num 0 -baseaddr [lindex $_CTIBASE $_core]
+       target create $_TARGETNAME aarch64 -dap $_CHIPNAME.dap -ap-num 0 -dbgbase [lindex $_DBGBASE $_core] -cti $_CTINAME
+       $_TARGETNAME configure -event reset-assert-post { aarch64  dbginit }
+
+       set _smp_command "$_smp_command $_TARGETNAME"
+}
+
+if {$_USE_SMP} {
+       eval $_smp_command
+}
+
+# default target is cpu0
+targets $_CHIPNAME.cpu0