1 # SPDX-License-Identifier: GPL-2.0-or-later
4 if { [info exists CHIPNAME] } {
5 set _CHIPNAME $CHIPNAME
10 if { [info exists DAP_TAPID] } {
11 set _DAP_TAPID $DAP_TAPID
13 set _DAP_TAPID 0x5ba00477
16 jtag newtap $_CHIPNAME dap -irlen 4 -expected-id $_DAP_TAPID
17 dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.dap
19 target create $_CHIPNAME.axi mem_ap -dap $_CHIPNAME.dap -ap-num 1
21 set _CPU_BASE 0x81000000
22 set _CPU_STRIDE 0x100000
23 set _CPU_DBGOFF 0x10000
24 set _CPU_CTIOFF 0x20000
27 for {set i 0} {$i < 8} {incr i} {
28 set _BASE [expr {$_CPU_BASE + $_CPU_STRIDE * $i}]
29 cti create $_CHIPNAME.cti$i -dap $_CHIPNAME.dap -ap-num 0 \
30 -baseaddr [expr {$_BASE + $_CPU_CTIOFF}]
31 target create $_CHIPNAME.cpu$i aarch64 -dap $_CHIPNAME.dap \
32 -cti $_CHIPNAME.cti$i -dbgbase [expr {$_BASE + $_CPU_DBGOFF}] \
33 {*}[expr {$i ? "-coreid $i" : "-rtos hwthread" }]
34 lappend _TARGETS $_CHIPNAME.cpu$i
37 target smp {*}$_TARGETS
40 target create $_CHIPNAME.sp cortex_a -dap $_CHIPNAME.dap -ap-num 0 -dbgbase 0x80138000
42 # Normally you will not need to call this, but if you are using the hard-coded
43 # Reset Configuration Word (RCW) you will need to call this manually. The CPU's
44 # reset vector is 0, and the boot ROM at that location contains ARMv7-A 32-bit
45 # instructions. This will cause the CPU to almost immediately execute an
46 # illegal instruction.
48 # This code is idempotent; releasing a released CPU has no effect, although it
49 # will halt/resume the service processor.
50 add_help_text release_cpu "Release a cpu which is held off"
51 proc release_cpu {cpu} {
52 set RST_BRRL 0x1e60060
54 set old [target current]
55 targets $::_CHIPNAME.sp
56 set not_halted [string compare halted [$::_CHIPNAME.sp curstate]]
61 # Release the cpu; it will start executing something bogus
62 mem2array regs 32 $RST_BRRL 1
63 mww $RST_BRRL [expr {$regs(0) | 1 << $cpu}]
71 targets $_CHIPNAME.cpu0
73 # Seems to work OK in testing