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target/xtensa: add dual-core support

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- Example for configuring multiple non-SMP
  Xtensa cores e.g. for heterogeneous debug
- JTAG only at this time; DAP out of scope
- Dual-Xtensa Palladium example via VDebug
- Update Xtensa core config examples

Signed-off-by: Ian Thompson <ianst@cadence.com>
Change-Id: I6d2b3d13fa8075416dcd383cf256a3e8582ee1c1
Reviewed-on: https://review.openocd.org/c/openocd/+/8078
Tested-by: jenkins
Reviewed-by: Jacek Wuwer <jacekmw8@gmail.com>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
This commit is contained in:
Ian Thompson
2024-01-18 16:10:26 -08:00
committed by Antonio Borneo
parent 151b743714
commit 3d3f823920
5 changed files with 455 additions and 372 deletions
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25
tcl/target/xtensa.cfg
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@@ -5,7 +5,7 @@
set xtensa_ids { 0x120034e5 0x120134e5
0x209034e5 0x209134e5 0x209234e5 0x209334e5 0x209434e5 0x209534e5 0x209634e5 0x209734e5
0x20a034e5 0x20a134e5 0x20a234e5 0x20a334e5 0x20a434e5 0x20a534e5 0x20a634e5 0x20a734e5 0x20a834e5
0x20b034e5 }
0x20b034e5 0x20b33ac5 0x20b33ac7 }
set expected_xtensa_ids {}
foreach i $xtensa_ids {
lappend expected_xtensa_ids -expected-id $i
@@ -23,6 +23,12 @@ if { [info exists CPUTAPID] } {
set _CPUTAPARGLIST [join $expected_xtensa_ids]
}
if { [info exists XTENSA_NUM_CORES] } {
set _XTENSA_NUM_CORES $XTENSA_NUM_CORES
} else {
set _XTENSA_NUM_CORES 1
}
set _TARGETNAME $_CHIPNAME
set _CPU0NAME cpu
set _TAPNAME $_CHIPNAME.$_CPU0NAME
@@ -40,12 +46,25 @@ if { [info exists XTENSA_DAP] } {
} else {
target create $_TARGETNAME xtensa -dap $_CHIPNAME.dap
}
} else {
} elseif { $_XTENSA_NUM_CORES > 1 } {
# JTAG direct (without DAP)
for {set i 0} {$i < $_XTENSA_NUM_CORES} {incr i} {
set _LCPUNAME $_CPU0NAME$i
set _LTAPNAME $_CHIPNAME.$_LCPUNAME
eval jtag newtap $_CHIPNAME $_LCPUNAME -irlen 5 $_CPUTAPARGLIST
target create $_LTAPNAME xtensa -chain-position $_LTAPNAME -coreid $i
$_LTAPNAME configure -event reset-assert-post { soft_reset_halt }
}
} else {
# JTAG direct (without DAP) - for legacy xtensa-config-XXX.cfg format
eval jtag newtap $_CHIPNAME $_CPU0NAME -irlen 5 $_CPUTAPARGLIST
target create $_TARGETNAME xtensa -chain-position $_TAPNAME
}
$_TARGETNAME configure -event reset-assert-post { soft_reset_halt }
if { $_XTENSA_NUM_CORES == 1 } {
# DAP and single-core legacy JTAG
$_TARGETNAME configure -event reset-assert-post { soft_reset_halt }
}
gdb_report_register_access_error enable